技术领域technical field
本发明涉及液晶显示领域，特别涉及一种发光装置、背光模组及液晶显示装置。The invention relates to the field of liquid crystal display, in particular to a light emitting device, a backlight module and a liquid crystal display device.
背景技术Background technique
液晶显示装置以体积小，重量轻，低辐射等优点广泛应用于各种领域。Liquid crystal display devices are widely used in various fields due to their small size, light weight, and low radiation.
液晶显示装置通常由液晶显示面板、背光模组以及驱动电路板等几个部分组成。其中，背光模组位于液晶显示面板下方，向液晶显示面板输出自下而上的白光。液晶显示面板上具有多个液晶光阀，能够通过控制液晶分子的旋转，调节透过液晶面板的光，同时，与彩膜基板相配合达到彩色显示的目的。A liquid crystal display device is generally composed of several parts such as a liquid crystal display panel, a backlight module, and a driving circuit board. Wherein, the backlight module is located under the liquid crystal display panel, and outputs white light from bottom to top to the liquid crystal display panel. There are multiple liquid crystal light valves on the liquid crystal display panel, which can adjust the light passing through the liquid crystal panel by controlling the rotation of liquid crystal molecules, and at the same time, cooperate with the color filter substrate to achieve the purpose of color display.
背光模组是液晶显示装置中主要的组成部分。其中，液晶显示装置的亮度、色彩饱和度等重要参数都与背光模组的性能有关。本领域技术人员提出一种以量子膜与发光元件搭配的背光模组，以提高液晶显示装置的色彩饱和度。The backlight module is the main component of the liquid crystal display device. Among them, important parameters such as brightness and color saturation of the liquid crystal display device are related to the performance of the backlight module. Those skilled in the art propose a backlight module in which a quantum film is combined with a light-emitting element to improve the color saturation of a liquid crystal display device.
参考图1，示出了现有技术一种侧入式背光模组的示意图。所述背光模组包括背板框体，以及内嵌于所述背板框体的开口中，自下而上依次设置的反射片40、导光板30、量子膜50和多层光学膜片60；在所述开口的侧壁上设有LED发光元件10，所述LED发光元件10发出蓝光，所述蓝光从侧向进入导光板30，导光板30将所述蓝光的传播方向偏转，使所述蓝光进入导光板30上的量子膜50中。所述背板框体包括背板20和胶框70，所述LED发光元件10通过胶框70和背板20粘合在一起。Referring to FIG. 1 , it shows a schematic diagram of an edge-lit backlight module in the prior art. The backlight module includes a backplane frame, and embedded in the opening of the backplane frame, a reflection sheet 40, a light guide plate 30, a quantum film 50 and a multilayer optical film 60 are sequentially arranged from bottom to top. The side wall of the opening is provided with an LED light-emitting element 10, the LED light-emitting element 10 emits blue light, and the blue light enters the light guide plate 30 from the side, and the light guide plate 30 deflects the propagation direction of the blue light to make the blue light The blue light mentioned above enters the quantum film 50 on the light guide plate 30 . The backplane frame includes a backplane 20 and a glue frame 70 , and the LED light-emitting element 10 is bonded together through the glue frame 70 and the backplane 20 .
所述量子膜50中分散有量子点，所述量子点能够将部分蓝光转化为红光和绿光，所述红光和绿光，以及部分为转化的蓝光混合成白光，从所述量子膜50中输出。这种红、绿、蓝三色光混合成的白光作为液晶显示面板的背光，能够有效提高液晶显示装置的饱和度。Quantum dots are dispersed in the quantum film 50, and the quantum dots can convert part of the blue light into red light and green light, and the red light and green light, and part of the converted blue light are mixed into white light. Output in 50. The white light obtained by mixing red, green and blue light is used as the backlight of the liquid crystal display panel, which can effectively increase the saturation of the liquid crystal display device.
但是，量子膜50将部分蓝光转化为红光和绿光的过程，会造成一定的光强损失，使得量子膜50输出的白光亮度较低，影响液晶显示装置的性能。However, the process of converting part of the blue light into red light and green light by the quantum film 50 will cause a certain loss of light intensity, so that the brightness of the white light output by the quantum film 50 is low, which affects the performance of the liquid crystal display device.
发明内容Contents of the invention
本发明解决的问题是提供一种发光装置、背光模组及液晶显示装置，在提高液晶显示装置色彩饱和度的同时，提高液晶显示装置的亮度。The problem to be solved by the present invention is to provide a light emitting device, a backlight module and a liquid crystal display device, which can improve the brightness of the liquid crystal display device while improving the color saturation of the liquid crystal display device.
为了解决上述问题，本发明提供一种发光装置，包括：In order to solve the above problems, the present invention provides a light emitting device, comprising:
LED发光晶片；LED light-emitting chip;
包覆所述LED发光晶片的保护结构，所述保护结构中设置有荧光粉；A protective structure covering the LED light-emitting chip, and phosphor powder is arranged in the protective structure;
设置在所述保护结构外的第一光学膜片，所述第一光学膜片中分散有量子点；a first optical film arranged outside the protective structure, quantum dots are dispersed in the first optical film;
所述荧光粉能够受到所述LED发光晶片发出的部分光激发，从而出射白光；从所述LED发光晶片发出的另一部分光在到达所述第一光学膜片后转化为白光。The fluorescent powder can be excited by part of the light emitted by the LED light-emitting chip, so as to emit white light; another part of the light emitted from the LED light-emitting chip is converted into white light after reaching the first optical film.
与现有技术相比，本发明的技术方案中，所述发光装置中的LED发光晶片用于发光，所述荧光粉能够受到所述LED发光晶片发出的部分光激发，从而出射白光；从所述LED发光晶片发出的另一部分光在到达所述第一光学膜片后，通过量子点发光的方式转化为白光。所述荧光粉受光激发转化白光的光转化率比量子点发光的光转化率更高，也就是说，同样光强的光分别入射荧光粉和第一光学膜片，荧光粉输出的白光比第一光学膜片输出的白光具有更高的亮度，因此，本发明发光装置同时采用荧光粉激发发光和量子点发光两种方式发出白光，与现有技术仅采用量子点发光方式的发光装置相比，发出的白光亮度更高，同时由于采用了具有量子点的第一光学膜片，使得该发光装置充当显示装置的背光模组时，使显示装置具有较高的色彩饱和度。Compared with the prior art, in the technical solution of the present invention, the LED light-emitting chip in the light-emitting device is used to emit light, and the phosphor powder can be excited by part of the light emitted by the LED light-emitting chip, thereby emitting white light; from the Another part of the light emitted by the LED light-emitting chip reaches the first optical film and is converted into white light by quantum dots. The light conversion rate of the fluorescent powder converted into white light by light excitation is higher than that of the quantum dots, that is to say, the light of the same light intensity is respectively incident on the fluorescent powder and the first optical film, and the white light output by the fluorescent powder is higher than that of the first optical diaphragm. The white light output by an optical diaphragm has higher brightness. Therefore, the light-emitting device of the present invention adopts two methods of phosphor excitation and quantum dot light-emitting to emit white light at the same time. Compared with the light-emitting device in the prior art that only uses quantum dot light-emitting , the brightness of white light emitted is higher, and at the same time due to the use of the first optical film with quantum dots, when the light emitting device is used as a backlight module of the display device, the display device has higher color saturation.
本发明还提供一种背光模组，包括：The present invention also provides a backlight module, including:
发光元件，用于发光；A light emitting element for emitting light;
第一光学膜片，所述第一光学膜片中分散有量子点，用于将所述发光元件发出的非白光转化为白光；a first optical film, quantum dots are dispersed in the first optical film, and are used to convert the non-white light emitted by the light-emitting element into white light;
光学组件，设置于所述发光元件和所述第一光学膜片之间，用于将所述发光元件的光传导至所述第一光学膜片；an optical component, disposed between the light-emitting element and the first optical film, for transmitting light from the light-emitting element to the first optical film;
所述背光模组在所述发光元件中或者在所述发光元件到所述第一光学膜片之间的光路上还设置有荧光粉，所述荧光粉用于受非白光激发而发出白光，所述荧光粉发出的白光透过第一光学膜片输出。The backlight module is further provided with phosphor powder in the light-emitting element or on the optical path between the light-emitting element and the first optical film, and the phosphor powder is used to emit white light when excited by non-white light, The white light emitted by the fluorescent powder is output through the first optical film.
本发明提供的背光模组中，所述第一光学膜片中分散有量子点，用于将所述发光元件发出的非白光转化为白光，在所述发光元件中或者在所述发光元件到所述第一光学膜片之间的光路上还设置有荧光粉，所述荧光粉用于受非白光激发而发出白光，所述荧光粉发出的白光透过第一光学膜片输出。所述荧光粉受光激发转化白光的光转化率比量子点发光的光转化率更高，也就是说，同样光强的光分别入射荧光粉和第一光学膜片，也就是说，同样光强的非白光分别入射荧光粉和第一光学膜片，荧光粉输出的白光比第一光学膜片输出的白光具有更高的亮度，因此，本发明背光模组同时采用荧光粉激发发光和量子点发光两种方式发出白光，与现有技术仅采用量子点发光方式的背光模组相比，发出的白光亮度更高，同时可以使显示装置还具有较高的色彩饱和度。In the backlight module provided by the present invention, quantum dots are dispersed in the first optical film for converting the non-white light emitted by the light-emitting element into white light, in the light-emitting element or between the light-emitting element and Phosphor powder is also arranged on the optical path between the first optical films, the phosphor powder is used to emit white light when excited by non-white light, and the white light emitted by the phosphor powder is output through the first optical films. The light conversion rate of the fluorescent powder converted into white light by light excitation is higher than that of the quantum dots, that is to say, light of the same light intensity enters the phosphor powder and the first optical film respectively, that is to say, the light of the same light intensity The non-white light incident on the phosphor powder and the first optical film respectively, the white light output by the phosphor powder has higher brightness than the white light output by the first optical film. There are two ways to emit white light. Compared with the backlight module in the prior art that only adopts the quantum dot light emitting method, the brightness of the white light emitted is higher, and at the same time, the display device can also have higher color saturation.
本发明还提供一种液晶显示装置，包括本发明提供的背光模组以及位于所述背光模组上的液晶显示面板。由于本发明背光模组与现有技术仅采用量子点发光方式的背光模组相比，发出的白光亮度更高，同时还具有较高的色彩饱和度，因此本发明液晶显示装置兼具高色彩饱和度和高亮度的优点。The present invention also provides a liquid crystal display device, comprising the backlight module provided by the present invention and a liquid crystal display panel located on the backlight module. Because the backlight module of the present invention is compared with the backlight module of the prior art that only adopts the quantum dot light emitting method, the brightness of the white light emitted is higher, and it also has a higher color saturation, so the liquid crystal display device of the present invention has both high-color The advantages of saturation and high brightness.
附图说明Description of drawings
图1是现有技术背光模组的示意图；1 is a schematic diagram of a prior art backlight module;
图2是本发明发光装置第一实施例的示意图Fig. 2 is the schematic diagram of the first embodiment of the light-emitting device of the present invention
图3是图2所示发光装置中发光元件的示意图；Fig. 3 is a schematic diagram of a light-emitting element in the light-emitting device shown in Fig. 2;
图4是本发明发光装置第二实施例的示意图；Fig. 4 is a schematic diagram of the second embodiment of the light emitting device of the present invention;
图5是本发明发光装置第三实施例中发光元件的示意图；5 is a schematic diagram of a light emitting element in a third embodiment of the light emitting device of the present invention;
图6是本发明发光装置第四实施例中发光元件的示意图；6 is a schematic diagram of a light emitting element in a fourth embodiment of the light emitting device of the present invention;
图7是本发明发光装置第五实施例中发光元件的示意图；7 is a schematic diagram of a light emitting element in a fifth embodiment of the light emitting device of the present invention;
图8是本发明发光装置第六实施例中发光元件的示意图；8 is a schematic diagram of a light emitting element in a sixth embodiment of the light emitting device of the present invention;
图9、图10是本发明背光模组第一实施例的示意图；9 and 10 are schematic diagrams of the first embodiment of the backlight module of the present invention;
图11、图12是本发明背光模组第二实施例的示意图；11 and 12 are schematic diagrams of the second embodiment of the backlight module of the present invention;
图13是本发明背光模组第三实施例的剖视图；13 is a cross-sectional view of a third embodiment of the backlight module of the present invention;
图14是本发明背光模组第四实施例的剖视图；14 is a cross-sectional view of a fourth embodiment of the backlight module of the present invention;
图15是本发明背光模组第五实施例的剖视图；15 is a cross-sectional view of a fifth embodiment of the backlight module of the present invention;
图16是本发明背光模组第六实施例的剖视图；16 is a cross-sectional view of a sixth embodiment of the backlight module of the present invention;
图17是本发明背光模组第七实施例的剖视图；17 is a cross-sectional view of a seventh embodiment of the backlight module of the present invention;
图18是本发明背光模组第八实施例的剖视图。FIG. 18 is a cross-sectional view of the eighth embodiment of the backlight module of the present invention.
具体实施方式detailed description
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
如背景技术所描述的，现有技术中采用量子膜的背光模组虽然能提高液晶显示装置的色彩饱和度，但会使得显示亮度较差。As described in the background art, although the backlight module using the quantum film in the prior art can improve the color saturation of the liquid crystal display device, it will make the display brightness poor.
针对上述问题，本发明实施例中提供一种发光装置、背光模组及液晶显示装置，在提高液晶显示装置色彩饱和度的同时，提高液晶显示装置的亮度。To solve the above problems, embodiments of the present invention provide a light emitting device, a backlight module, and a liquid crystal display device, which improve the brightness of the liquid crystal display device while improving the color saturation of the liquid crystal display device.
本发明的发光装置中，LED发光晶片用于发光，所述荧光粉能够受到所述LED发光晶片发出的部分光激发，从而出射白光；从所述LED发光晶片发出的另一部分光在到达所述第一光学膜片后，通过量子点发光的方式转化为白光。所述荧光粉受光激发转化白光的光转化率比量子点发光的光转化率更高，也就是说，同样光强的光分别入射荧光粉和第一光学膜片，也就是说，同样光强的光分别入射荧光粉和第一光学膜片，荧光粉输出的白光比第一光学膜片输出的白光具有更高的亮度，因此，本发明发光装置同时采用荧光粉激发发光和量子点发光两种方式发出白光，与现有技术仅采用量子点发光方式的发光装置相比，发出的白光亮度更高，并且以该发光装置充当显示装置的背光模组时，能够使显示装置具有较高的色彩饱和度。In the light-emitting device of the present invention, the LED light-emitting chip is used to emit light, and the phosphor powder can be excited by part of the light emitted by the LED light-emitting chip, thereby emitting white light; another part of light emitted from the LED light-emitting chip reaches the After the first optical film, it is converted into white light by means of quantum dots emitting light. The light conversion rate of the fluorescent powder converted into white light by light excitation is higher than that of the quantum dots, that is to say, light of the same light intensity enters the phosphor powder and the first optical film respectively, that is to say, the light of the same light intensity The light incident on the phosphor powder and the first optical film respectively, the white light output by the phosphor powder has a higher brightness than the white light output by the first optical film. This method emits white light. Compared with the prior art light emitting device that only adopts the quantum dot light emitting method, the brightness of the white light emitted is higher, and when the light emitting device is used as the backlight module of the display device, the display device can have a higher Color saturation.
下面结合具体实施例对本发明的技术方案进行进一步描述。图2示出了本发明发光装置第一实施例的示意图，在第一实施例中，所述发光装置包括发光元件100和第一光学膜片200，图3为图2中发光元件100的示意图。The technical solutions of the present invention will be further described below in conjunction with specific embodiments. Fig. 2 shows a schematic diagram of the first embodiment of the light-emitting device of the present invention. In the first embodiment, the light-emitting device includes a light-emitting element 100 and a first optical film 200. Fig. 3 is a schematic diagram of the light-emitting element 100 in Fig. 2 .
结合参考图2、图3，具体地，本实施例发光装置包括：Referring to Fig. 2 and Fig. 3 together, specifically, the light emitting device of this embodiment includes:
LED发光晶片101，用于发光。The LED light emitting chip 101 is used for emitting light.
包覆所述LED发光晶片101的保护结构，所述保护结构中设置有荧光粉。所述发光元件100包括所述LED发光晶片101和保护结构。A protection structure covering the LED light-emitting chip 101 , phosphor powder is arranged in the protection structure. The light emitting element 100 includes the LED light emitting chip 101 and a protection structure.
设置在所述保护结构外的第一光学膜片200，所述第一光学膜片200中分散有量子点201。The first optical film 200 is arranged outside the protection structure, and quantum dots 201 are dispersed in the first optical film 200 .
本实施例中，所述LED发光晶片101具有出光面G1，所述第一光学膜片200设置在所述LED发光晶片101出光面的一侧，且在所述LED发光晶片101发出的光的光路上。In this embodiment, the LED light-emitting chip 101 has a light-emitting surface G1, and the first optical film 200 is arranged on one side of the light-emitting surface of the LED light-emitting chip 101, and the light emitted by the LED light-emitting chip 101 on the light path.
在本实施例中，所述LED发光晶片101发出蓝光，所述荧光粉包括黄色荧光粉、黄红混合荧光粉或红绿混合荧光粉中的一种。但是本发明对此不作限制，可选的，在其他实施例中，所述LED发光晶片101还可以发出紫外光。In this embodiment, the LED light-emitting chip 101 emits blue light, and the phosphor includes one of yellow phosphor, yellow-red mixed phosphor or red-green mixed phosphor. However, the present invention is not limited thereto. Optionally, in other embodiments, the LED light-emitting chip 101 can also emit ultraviolet light.
继续参考图3，本实施例中，所述保护结构包括：Continuing to refer to FIG. 3, in this embodiment, the protection structure includes:
包覆所述LED发光晶片101出光面的透明保护层102；A transparent protective layer 102 covering the light-emitting surface of the LED light-emitting chip 101;
壳体104，所述透明保护层102和LED发光晶片101内嵌于所述壳体104中，所述壳体104露出所述透明保护层102。The casing 104 , the transparent protective layer 102 and the LED light-emitting chip 101 are embedded in the casing 104 , and the transparent protective layer 102 is exposed from the casing 104 .
在本实施例中，所述透明保护层102包括中心区域1021和围绕所述中心区域的周边区域1022，所述荧光粉分布于所述周边区域1022中。In this embodiment, the transparent protective layer 102 includes a central area 1021 and a peripheral area 1022 surrounding the central area, and the phosphor powder is distributed in the peripheral area 1022 .
继续参考图3，所述荧光粉能够受到所述LED发光晶片101发出的部分蓝光010激发，从而出射白光030，也就是说，所述荧光粉将部分蓝光010转化为白光。从所述LED发光晶片101发出的另一部分蓝光010通过透明保护层102后，仍以蓝光010出射。Continuing to refer to FIG. 3 , the phosphor powder can be excited by part of the blue light 010 emitted by the LED light-emitting chip 101 , so as to emit white light 030 , that is, the phosphor powder converts part of the blue light 010 into white light. Another part of the blue light 010 emitted from the LED light-emitting chip 101 passes through the transparent protective layer 102 and is still emitted as blue light 010 .
可选的，所述透明保护层102的材料为透明树脂。Optionally, the material of the transparent protective layer 102 is transparent resin.
需要说明的是，在其他实施例中，当所述LED发光晶片101发出的光为紫外光等其他非白光时，还可以在保护结构中设置其他类型的荧光粉，使部分非白光转化为白光，本发明对此不做限定。It should be noted that, in other embodiments, when the light emitted by the LED light-emitting chip 101 is other non-white light such as ultraviolet light, other types of phosphors can also be arranged in the protective structure to convert part of the non-white light into white light. , the present invention does not limit it.
还需要说明的是，本发明对所述保护结构中设置荧光粉的位置也不做限定，在其他实施例中，所述荧光粉还可以设置于所述保护结构中的其他位置上。It should also be noted that the present invention does not limit the position of the phosphor powder in the protection structure, and in other embodiments, the phosphor powder can also be disposed in other positions in the protection structure.
结合参考图2和图3，具体地，由于所述LED发光晶片101具有出光面G1，所述第一光学膜片200设置在所述LED发光晶片101出光面G1的一侧，且在所述LED发光晶片101发出的光的光路上。Referring to FIG. 2 and FIG. 3 , specifically, since the LED light-emitting chip 101 has a light-emitting surface G1, the first optical film 200 is arranged on one side of the light-emitting surface G1 of the LED light-emitting chip 101, and on the side of the light-emitting surface G1 of the LED light-emitting chip 101, The light path of the light emitted by the LED light-emitting chip 101 .
在所述透明保护层102的周边区域1022中，所述荧光粉受部分蓝光010激发而发出白光030，从周边区域1022发出的白光030到达所述第一光学膜片200后，依然以白光030输出。In the peripheral area 1022 of the transparent protective layer 102, the fluorescent powder is excited by part of the blue light 010 to emit white light 030, and the white light 030 emitted from the peripheral area 1022 reaches the first optical film 200, still in the form of white light 030 output.
在透明保护层102的中心区域1021中没有设置荧光粉，从所述LED发光晶片101发出的另一部分蓝光010通过中心区域1021后仍为蓝光，在到达所述第一光学膜片200后转化为白光030。No fluorescent powder is set in the central area 1021 of the transparent protective layer 102, and another part of the blue light 010 emitted from the LED light-emitting chip 101 is still blue after passing through the central area 1021, and is converted into blue light after reaching the first optical film 200. white light 030.
具体地，所述第一光学膜片200分散的量子点201，能够将部分蓝光010转化为红光和绿光，所述红光和绿光，以及部分为转化的蓝光010混合成白光030，从所述第一光学膜片200中输出。这种红、绿、蓝三色光混合成的白光030作为液晶显示装置的背光，能够有效提高液晶显示装置的饱和度。Specifically, the quantum dots 201 dispersed in the first optical film 200 can convert part of the blue light 010 into red light and green light, the red light and green light, and part of the converted blue light 010 are mixed into white light 030, output from the first optical film 200 . The white light 030 formed by the mixture of red, green and blue light is used as the backlight of the liquid crystal display device, which can effectively increase the saturation of the liquid crystal display device.
所述荧光粉受光激发转化白光的光转化率比量子点发光的光转化率更高，也就是说，同样光强的蓝光010分别入射荧光粉和第一光学膜片200，荧光粉输出的白光030比第一光学膜片输出的白光030具有更高的亮度，因此，本实施例发光装置同时采用荧光粉激发发光和量子点201发光两种方式发出白光030，与现有技术仅采用量子点方式的发光装置相比，发出的白光030亮度更高，并且以该发光装置充当显示装置的背光模组时，能够使显示装置具有较高的色彩饱和度。The light conversion rate of the fluorescent powder converted into white light by light excitation is higher than the light conversion rate of quantum dot light emission, that is to say, the blue light 010 of the same light intensity enters the phosphor powder and the first optical film 200 respectively, and the white light output by the phosphor powder 030 has a higher brightness than the white light 030 output by the first optical film. Therefore, the light-emitting device of this embodiment adopts two methods of phosphor excitation and quantum dot 201 to emit white light 030 at the same time, which is different from the prior art that only uses quantum dots. Compared with the light-emitting device of this method, the white light 030 emitted has higher brightness, and when the light-emitting device is used as a backlight module of a display device, the display device can have a higher color saturation.
需要说明的是，所述荧光粉转化蓝光为白光的光转化率较所述量子点201转化蓝光为白光的光转化率更高，因此，在本实施例中，可以改变中心区域1021和周边区域1022分别占透明保护层102出光面的面积比，调节被所述荧光粉转化为白光的蓝光光通量与被量子点201转化为白光的蓝光光通量分别占所述LED发光晶片101发出蓝光的总光通量的比例，进而调节本实施例发光装置所发出的白光亮度。当被所述荧光粉转化为白光的蓝光光通量占所述LED发光晶片101发出蓝光的总光通量的比例越大时，本实施例发光装置所发出的白光亮度更高。It should be noted that the light conversion rate of the fluorescent powder from blue light to white light is higher than that of the quantum dots 201 from blue light to white light. Therefore, in this embodiment, the central area 1021 and the surrounding area can be changed. 1022 respectively account for the area ratio of the light-emitting surface of the transparent protective layer 102, adjust the blue light flux converted into white light by the phosphor powder and the blue light flux converted into white light by the quantum dots 201 respectively account for the total luminous flux of the blue light emitted by the LED light-emitting chip 101 ratio, and then adjust the brightness of the white light emitted by the light emitting device of this embodiment. When the proportion of the blue light flux converted into white light by the phosphor powder to the total blue light flux emitted by the LED light-emitting chip 101 is larger, the brightness of white light emitted by the light emitting device of this embodiment is higher.
在本实施例中，当被所述荧光粉转化为白光的蓝光光通量占所述LED发光晶片101发出蓝光的总光通量的比例为50％时，与现有技术仅采用量子点发光方式的发光装置相比，本实施例发光装置发出白光的亮度能够提升51.61％。In this embodiment, when the blue luminous flux converted into white light by the fluorescent powder accounts for 50% of the total luminous flux of the blue light emitted by the LED light-emitting chip 101, it is different from the prior art light-emitting device that only adopts the quantum dot light-emitting method. Compared with that, the brightness of the white light emitted by the light emitting device of this embodiment can be increased by 51.61%.
需要说明的是，在本实施例中，所述第一光学膜片200和所述LED发光晶片101的出光面G1相对设置。因此本实施例发光装置能够应用于直下式背光模组。It should be noted that, in this embodiment, the first optical film 200 and the light-emitting surface G1 of the LED light-emitting chip 101 are disposed opposite to each other. Therefore, the light emitting device of this embodiment can be applied to a direct type backlight module.
需要说明的是，在本实施例中，所述保护结构上还设有电极103，用于为所述LED发光晶片101供电。It should be noted that, in this embodiment, an electrode 103 is further provided on the protective structure for supplying power to the LED light-emitting chip 101 .
需要说明的是，图3为发光元件100的剖视图，未示出发光元件100上表面的形状，本发明的发光元件中，所述壳体104露出所述透明保护层102的表面为第一上表面G2，所述壳体104的第一上表面G2可以为矩形、圆形等任意形状，所述透明保护层102背离所述LED发光晶片101的表面为第二上表面G3，所述第二上表面G3可以为矩形、圆形等任意形状，本发明对此均不做限制。It should be noted that FIG. 3 is a cross-sectional view of the light emitting element 100, and the shape of the upper surface of the light emitting element 100 is not shown. In the light emitting element of the present invention, the surface of the housing 104 exposed to the transparent protective layer 102 is the first upper surface. Surface G2, the first upper surface G2 of the housing 104 can be in any shape such as rectangle, circle, etc., the surface of the transparent protective layer 102 facing away from the LED light-emitting chip 101 is the second upper surface G3, the second The upper surface G3 can be in any shape such as rectangle, circle, etc., which is not limited in the present invention.
还需要说明的是，在其他实施例中，当所述LED发光晶片101发出的光为紫外光时，所述荧光粉转化紫外光为白光的光转化率较所述量子点201转化紫外光为白光的光转化率同样更高，因此与现有技术仅采用量子点方式的发光装置相比，本发明的发光装置发出的白光亮度更高。It should also be noted that, in other embodiments, when the light emitted by the LED light-emitting chip 101 is ultraviolet light, the light conversion rate of the fluorescent powder converting ultraviolet light into white light is The light conversion rate of white light is also higher, so compared with the light emitting device in the prior art that only uses quantum dots, the brightness of white light emitted by the light emitting device of the present invention is higher.
参考图4，示出了本发明发光装置第二实施例的示意图。本实施例与第一实施例的技术方案大致相同，本实施例与第一实施例的相同之处不再赘述。与第一实施例的不同之处在于，所述第一光学膜片200和所述LED发光晶片101的出光面G1之间具有90度的夹角。在所述发光元件100和第一光学膜片200之间设有导光元件011，所述导光元件011能够使通过导光元件011的光发生光路偏转。Referring to FIG. 4 , it shows a schematic diagram of a second embodiment of the light emitting device of the present invention. The technical solution of this embodiment is substantially the same as that of the first embodiment, and the similarities between this embodiment and the first embodiment will not be repeated here. The difference from the first embodiment is that there is an included angle of 90 degrees between the first optical film 200 and the light emitting surface G1 of the LED light emitting chip 101 . A light guide element 011 is disposed between the light emitting element 100 and the first optical film 200 , and the light guide element 011 can deflect the light passing through the light guide element 011 .
所述发光元件100发出的蓝光010和白光030通过所述导光元件011后，能够垂直的进入所述第一光学膜片200，因此本实施例发光装置能够应用于侧入式背光模组。The blue light 010 and white light 030 emitted by the light emitting element 100 can enter the first optical film 200 vertically after passing through the light guide element 011 , so the light emitting device of this embodiment can be applied to a side-type backlight module.
参考图5，示出了本发明发光装置第三实施例中发光元件的示意图。本实施例与第一实施例的技术方案大致相同，本实施例与第一实施例的相同之处不再赘述，与第一实施例的不同之处在于，在本实施例中，在发光元件中，所述透明保护层102包括中心区域1021和围绕所述中心区域的周边区域1022，所述荧光粉分布于所述中心区域1021中。所述荧光粉分布于所述中心区域1021中的好处在于，所述荧光粉受部分蓝光010激发发出的白光030自所述透明保护层102包括中心区域1021输出到所述第一光学膜片上，更有利于提高第一光学膜片输出的白光的亮度。Referring to FIG. 5 , it shows a schematic diagram of the light emitting element in the third embodiment of the light emitting device of the present invention. The technical solution of this embodiment is substantially the same as that of the first embodiment, and the similarities between this embodiment and the first embodiment will not be repeated. The difference from the first embodiment is that in this embodiment, the light-emitting element Among them, the transparent protective layer 102 includes a central area 1021 and a peripheral area 1022 surrounding the central area, and the phosphor is distributed in the central area 1021 . The advantage of the fluorescent powder being distributed in the central area 1021 is that the white light 030 emitted by the fluorescent powder excited by part of the blue light 010 is output to the first optical film from the transparent protective layer 102 including the central area 1021 , which is more conducive to improving the brightness of the white light output by the first optical film.
参考图6，示出了本发明发光装置第四实施例中发光元件的示意图。本实施例与第一实施例的技术方案大致相同，本实施例与第一实施例的相同之处不再赘述，与第一实施例的不同之处在于，在本实施例中，在发光元件中，所述荧光粉均匀分布于所述透明保护层102中，所述透明保护层102中的荧光粉含量在第一阈值以下。Referring to FIG. 6 , it shows a schematic diagram of the light emitting element in the fourth embodiment of the light emitting device of the present invention. The technical solution of this embodiment is substantially the same as that of the first embodiment, and the similarities between this embodiment and the first embodiment will not be repeated. The difference from the first embodiment is that in this embodiment, the light-emitting element In the embodiment, the phosphor powder is evenly distributed in the transparent protective layer 102, and the phosphor powder content in the transparent protective layer 102 is below a first threshold.
具体地，当所述荧光粉在所述透明保护层102中的含量较少时，部分蓝光010激发荧光粉而发出白光030，另一部分蓝光010不会激发荧光粉，而是依然以蓝光透过透明保护层102输出，所述另一部分蓝光010由第一光学膜片转化为白光。Specifically, when the content of the phosphor in the transparent protective layer 102 is small, part of the blue light 010 excites the phosphor to emit white light 030, and the other part of the blue light 010 does not excite the phosphor, but still transmits as blue light. The transparent protective layer 102 outputs, and the other part of the blue light 010 is converted into white light by the first optical film.
当荧光粉在所述透明保护层102中的含量大于第一阈值时，LED发光晶片101发出的全部蓝光(占LED发光晶片101发出蓝光总光通量的99％以上，其余可以忽略)激发荧光粉发出白光，使得LED发光晶片101发出的全部蓝光转化为白光。因此，本实施例中，所述透明保护层102中的荧光粉含量在第一阈值以下，使得部分蓝光010激发荧光粉而发出白光030，另一部分蓝光010不会激发荧光粉，而是依然以蓝光010透过透明保护层102输出。When the content of the fluorescent powder in the transparent protective layer 102 is greater than the first threshold, all the blue light emitted by the LED light-emitting chip 101 (accounting for more than 99% of the total luminous flux of the blue light emitted by the LED light-emitting chip 101, and the rest can be ignored) excites the fluorescent powder to emit light. White light, so that all the blue light emitted by the LED light-emitting chip 101 is converted into white light. Therefore, in this embodiment, the phosphor content in the transparent protective layer 102 is below the first threshold, so that part of the blue light 010 excites the phosphor to emit white light 030, and the other part of the blue light 010 does not excite the phosphor, but remains in the The blue light 010 is output through the transparent protective layer 102 .
需要说明的是，所述第一阈值和所述透明保护层102形状、体积以及LED发光晶片101发出蓝光的光强均有关系，所述第一阈值的具体值可以通过实验得到，本发明在此不再任何限定。It should be noted that the first threshold is related to the shape and volume of the transparent protective layer 102 and the intensity of the blue light emitted by the LED light-emitting chip 101. The specific value of the first threshold can be obtained through experiments. This is no longer limited.
本实施例中，还可以通过改变所述透明保护层102中的荧光粉含量，调节所述荧光粉转化蓝光的光通量与量子点201转化蓝光的光通量分别占所述LED发光晶片101发出蓝光的总光通量的比例，进而调节本实施例发光装置所发出的白光亮度。In this embodiment, by changing the phosphor content in the transparent protective layer 102, the luminous flux converted by the phosphor powder and the luminous flux converted by the quantum dots 201 respectively account for the total amount of blue light emitted by the LED light-emitting chip 101. The ratio of the luminous flux, and then adjust the brightness of the white light emitted by the light emitting device of this embodiment.
参考图7，示出了本发明发光装置第五实施例中发光元件的示意图。本实施例与第一实施例的技术方案大致相同，本实施例与第一实施例的相同之处不再赘述，与第一实施例的不同之处在于，在本实施例中，在发光元件中，所述透明保护层102背离所述LED发光晶片101的表面为第二上表面G3，所述第二上表面G3上设有第二荧光涂层105，所述荧光粉分布于所述第二荧光涂层105中,所述透明保护层102中不设置荧光粉。Referring to FIG. 7 , it shows a schematic diagram of the light emitting element in the fifth embodiment of the light emitting device of the present invention. The technical solution of this embodiment is substantially the same as that of the first embodiment, and the similarities between this embodiment and the first embodiment will not be repeated. The difference from the first embodiment is that in this embodiment, the light-emitting element Among them, the surface of the transparent protective layer 102 facing away from the LED light-emitting chip 101 is the second upper surface G3, and the second upper surface G3 is provided with a second fluorescent coating 105, and the fluorescent powder is distributed on the second upper surface G3. In the second fluorescent coating 105, no fluorescent powder is arranged in the transparent protective layer 102.
所述第二荧光涂层105用于将所述LED发光晶片101发出的部分蓝光010转化为白光030，另一部分蓝光010透过所述第二荧光涂层105，仍以蓝光010进入第一光学膜片。The second fluorescent coating 105 is used to convert part of the blue light 010 emitted by the LED light-emitting chip 101 into white light 030, and the other part of the blue light 010 passes through the second fluorescent coating 105, and enters the first optics as blue light 010. Diaphragm.
具体地，部分蓝光010激发荧光粉而发出白光030，另一部分蓝光010不会激发荧光粉，而是依然以蓝光010透过第二荧光涂层105输出，所述另一部分蓝光010由第一光学膜片转化为白光。转化成白光030的蓝光010和未转化的蓝光010的光通量之比与第二荧光涂层105中荧光粉含量有关。Specifically, part of the blue light 010 excites the phosphor to emit white light 030, the other part of the blue light 010 does not excite the phosphor, but is still output as blue light 010 through the second fluorescent coating 105, and the other part of the blue light 010 is output by the first optical The diaphragm converts to white light. The ratio of the luminous flux of the blue light 010 converted into white light 030 to the unconverted blue light 010 is related to the phosphor content in the second fluorescent coating 105 .
本实施例中，所述第二荧光涂层105可以采用涂布等方式形成在所述透明保护层102的第二上表面G3。例如将荧光粉分布于有机材料中，将所述有机材料涂布在有机材料并固化，形成第二荧光涂层105。因此，本实施例发光装置的制作工艺更加简单，成本更低。In this embodiment, the second fluorescent coating 105 may be formed on the second upper surface G3 of the transparent protective layer 102 by means of coating or the like. For example, fluorescent powder is distributed in an organic material, and the organic material is coated on the organic material and cured to form the second fluorescent coating 105 . Therefore, the manufacturing process of the light emitting device of this embodiment is simpler and the cost is lower.
参考图8，示出了本发明发光装置第六实施例的示意图。本实施例与第一实施例的技术方案大致相同，本实施例与第一实施例的相同之处不再赘述，与第一实施例的不同之处在于，在本实施例中，在发光元件中，所述壳体104露出所述透明保护层102的表面为第一上表面G2，所述第一上表G2面设置有第一荧光涂层106，所述荧光粉分布于所述第一荧光涂层106中。Referring to FIG. 8 , it shows a schematic diagram of a sixth embodiment of a light emitting device of the present invention. The technical solution of this embodiment is substantially the same as that of the first embodiment, and the similarities between this embodiment and the first embodiment will not be repeated. The difference from the first embodiment is that in this embodiment, the light-emitting element Among them, the surface of the casing 104 exposing the transparent protective layer 102 is the first upper surface G2, and the surface of the first upper surface G2 is provided with a first fluorescent coating 106, and the fluorescent powder is distributed on the first Fluorescent coating 106.
本实施例中，所述透明保护层102中不设置荧光粉，从透明保护层102出射的蓝光010由第一光学膜片转化为白光。In this embodiment, no fluorescent powder is disposed in the transparent protective layer 102, and the blue light 010 emitted from the transparent protective layer 102 is converted into white light by the first optical film.
在本实施例中，所述发光装置用于光传输环境中，例如，当所述发光装置位于背光模组中时，所述发光元件为背光模组中的发光元件，所述第一光学膜片为背光模组中的第一光学膜片，所述背光模组包括背板、光学组件、多种光学膜片组成的组合结构，从透明保护层102出射的蓝光010在组合结构的各个位置发生投射或反射，所述组合结构即光传输环境。In this embodiment, the light-emitting device is used in a light transmission environment. For example, when the light-emitting device is located in a backlight module, the light-emitting element is a light-emitting element in the backlight module, and the first optical film The sheet is the first optical film in the backlight module. The backlight module includes a composite structure composed of a backplane, optical components, and various optical films. The blue light 010 emitted from the transparent protective layer 102 is in each position of the composite structure Where projection or reflection occurs, the combined structure is the light transmission environment.
所述光传输环境能够将所述发光元件发出的部分蓝光010反射到所述保护结构上。由于所述荧光粉分布于所述第一上表面G2上的第一荧光涂层106中，所述第一荧光涂层106能够接收经所述光传输环境反射回的部分蓝光020，并使所述反射回的部分蓝光020转化为白光030。The light transmission environment can reflect part of the blue light 010 emitted by the light emitting element to the protection structure. Since the fluorescent powder is distributed in the first fluorescent coating 106 on the first upper surface G2, the first fluorescent coating 106 can receive part of the blue light 020 reflected by the light transmission environment, and make the The part of the blue light 020 reflected back is converted into white light 030.
因此本实施例中，所述第一荧光涂层106将所述光传输环境反射回的部分蓝光020重复利用，使其转化为白光030并透过第一光学膜片输出，增大了所述发光装置的光利用率，有效提高了发光装置的亮度。Therefore, in this embodiment, the first fluorescent coating 106 reuses part of the blue light 020 reflected by the light transmission environment to convert it into white light 030 and output it through the first optical film, increasing the The light utilization rate of the light emitting device effectively improves the brightness of the light emitting device.
本发明还提供一种背光模组。本发明提供的背光模组中，所述第一光学膜片中分散有量子点，用于将所述发光元件发出的非白光转化为白光，在所述发光元件中或者在所述发光元件到所述第一光学膜片之间的光路上还设置有荧光粉，所述荧光粉用于受非白光激发而发出白光，所述荧光粉发出的白光透过第一光学膜片输出。与通过分散有量子点的第一光学膜片，将部分进入第一光学膜片的非白光转化为白光相比，所述荧光粉受光激发从而发出的白光相对进入荧光粉的非白光具有更高的光转化率，也就是说，同样光强的非白光分别入射荧光粉和第一光学膜片，荧光粉输出的白光比第一光学膜片输出的白光具有更高的亮度，因此，本发明背光模组同时采用荧光粉激发发光和量子点发光两种方式发出白光，与现有技术仅采用量子点发光方式的背光模组相比，发出的白光亮度更高，同时可以使显示装置还具有较高的色彩饱和度。The invention also provides a backlight module. In the backlight module provided by the present invention, quantum dots are dispersed in the first optical film for converting the non-white light emitted by the light-emitting element into white light, in the light-emitting element or between the light-emitting element and Phosphor powder is also arranged on the optical path between the first optical films, the phosphor powder is used to emit white light when excited by non-white light, and the white light emitted by the phosphor powder is output through the first optical films. Compared with converting part of the non-white light entering the first optical film into white light through the first optical film dispersed with quantum dots, the white light emitted by the phosphor is excited by light and has a higher intensity than the non-white light entering the phosphor. The light conversion rate, that is to say, the non-white light of the same light intensity is respectively incident on the phosphor powder and the first optical film, and the white light output by the phosphor powder has higher brightness than the white light output by the first optical film. Therefore, the present invention The backlight module adopts phosphor powder excitation and quantum dot luminescence to emit white light at the same time. Compared with the prior art backlight module that only uses quantum dot luminescence, the brightness of white light emitted is higher, and at the same time, the display device can also have Higher color saturation.
图9示出了本发明背光模组第一实施例的剖视示意图，图10为图9中背光模组的局部俯视图(视角沿图9中箭头A1方向自上向下)。参考图9、图10对本发明背光模组第一实施例进行说明。9 shows a schematic cross-sectional view of the first embodiment of the backlight module of the present invention, and FIG. 10 is a partial top view of the backlight module in FIG. 9 (viewing angle is from top to bottom along the direction of arrow A1 in FIG. 9 ). The first embodiment of the backlight module of the present invention will be described with reference to FIG. 9 and FIG. 10 .
本实施例背光模组包括：The backlight module of this embodiment includes:
发光元件，用于发光。具体地，本实施例中，所述发光元件包括蓝光发光元件901和白光发光元件902。所述蓝光发光元件901和白光发光元件902均包括LED发光晶片(未示出)，所述LED发光晶片发出蓝光。在所述白光发光元件902上设置有荧光粉，所述荧光粉能够使所述白光发光元件中LED发光晶片发出的蓝光转化为白光。所述蓝光发光元件901中未设置荧光粉，因此所述蓝光发光元件901发出蓝光。A light emitting element for emitting light. Specifically, in this embodiment, the light emitting elements include a blue light emitting element 901 and a white light emitting element 902 . Both the blue light emitting element 901 and the white light emitting element 902 include an LED light emitting chip (not shown), and the LED light emitting chip emits blue light. Phosphor powder is arranged on the white light emitting element 902, and the phosphor powder can convert the blue light emitted by the LED light emitting chip in the white light emitting element into white light. Phosphor powder is not provided in the blue light emitting element 901, so the blue light emitting element 901 emits blue light.
需要说明的是，本实施例中，所述荧光粉能够受蓝光激发而发出白光，所述荧光粉包括黄色荧光粉、黄红混合荧光粉或红绿混合荧光粉。但是本发明对此不做限制，在其他实施例中，所述LED发光晶片还可以发出紫外光，所述荧光粉还可以选取能够受紫外光激发而发出白光的其他种类荧光粉。It should be noted that, in this embodiment, the phosphor can be excited by blue light to emit white light, and the phosphor includes yellow phosphor, yellow-red mixed phosphor or red-green mixed phosphor. However, the present invention is not limited thereto. In other embodiments, the LED light-emitting chip can also emit ultraviolet light, and the phosphor powder can also choose other types of phosphor powder that can be excited by ultraviolet light to emit white light.
还需要说明的是，在本实施例中，所述白光发光元件中LED发光晶片发出的全部蓝光转化为白光。It should also be noted that, in this embodiment, all the blue light emitted by the LED light-emitting chip in the white light-emitting element is converted into white light.
继续参考图9，本实施例背光模组还包括第一光学膜片600，所述第一光学膜片600中分散有量子点，用于将所述发光元件发出的非白光转化为白光。本实施例中，所述第一光学膜片600将蓝光发光元件901发出的蓝光转化为白光。具体地，量子点发光方式的原理为：所述量子点能够将蓝光发光元件901发出的部分蓝光转化为红光和绿光，所述红光和绿光，以及部分为转化的蓝光混合成白光，从所述第一光学膜片600中输出。Continuing to refer to FIG. 9 , the backlight module of this embodiment further includes a first optical film 600 , and quantum dots are dispersed in the first optical film 600 for converting the non-white light emitted by the light-emitting element into white light. In this embodiment, the first optical film 600 converts the blue light emitted by the blue light emitting element 901 into white light. Specifically, the principle of the quantum dot light emitting method is: the quantum dots can convert part of the blue light emitted by the blue light emitting element 901 into red light and green light, and the red light, green light, and part of the converted blue light are mixed into white light , output from the first optical film 600 .
本实施例中，所述白光发光元件902发出的白光为所述荧光粉发出的白光，所述白光发光元件902发出的白光透过第一光学膜片600输出。因此，本实施例背光模组能够同时通过荧光粉激发发光和量子点发光两种方式发出白光。In this embodiment, the white light emitted by the white light emitting element 902 is the white light emitted by the phosphor powder, and the white light emitted by the white light emitting element 902 is output through the first optical film 600 . Therefore, the backlight module of this embodiment can simultaneously emit white light through two ways of phosphor excitation and quantum dot light emission.
荧光粉激发发光比量子点发光具有更高的光转化率，也就是说，同样光强的蓝光分别入射荧光粉和第一光学膜片600，荧光粉输出的白光比第一光学膜片600输出的白光具有更高的亮度，因此，本实施例背光模组同时采用荧光粉激发发光和量子点发光两种方式发出白光，与现有技术仅采用量子点发光方式的背光模组相比，发出的白光亮度更高，同时还能为显示装置提供较高的色彩饱和度。本实施例背光模组应用于液晶显示装置中，能够有效提高液晶显示装置的亮度和色彩饱和度，从而提高显示效果。Phosphor powder excitation and luminescence have a higher light conversion rate than quantum dot luminescence, that is to say, blue light of the same light intensity enters the phosphor powder and the first optical film 600 respectively, and the white light output by the phosphor powder is higher than that of the first optical film 600. The white light has higher brightness. Therefore, the backlight module of this embodiment adopts two methods of phosphor excitation and quantum dot light emission to emit white light at the same time. The brightness of the white light is higher, and at the same time, it can provide a higher color saturation for the display device. The backlight module of this embodiment is applied to a liquid crystal display device, which can effectively improve the brightness and color saturation of the liquid crystal display device, thereby improving the display effect.
继续参考图9，本实施例背光模组还包括：Continuing to refer to FIG. 9, the backlight module of this embodiment also includes:
光学组件，设置于所述发光元件901(902)和所述第一光学膜片600之间，用于将所述发光元件的光传导至所述第一光学膜片600。The optical component is arranged between the light emitting element 901 ( 902 ) and the first optical film 600 , and is used for transmitting the light of the light emitting element to the first optical film 600 .
背板框体，所述背板框体包括背板300和框胶301，所述第一光学膜片600和光学组件内嵌于所述背板框体的开口中，所述第一光学膜片600位于所述光学组件上。A backplane frame, the backplane frame includes a backplane 300 and a frame glue 301, the first optical film 600 and optical components are embedded in the opening of the backplane frame, the first optical film Sheet 600 is located on the optical assembly.
具体地，在本实施例中，所述背光模组为侧入式背光模组，所述蓝光发光元件901和白光发光元件902位于所述开口的侧壁上，所述光学组件包括覆盖于开口底部的导光板500，所述导光板500用于使所述蓝光发光元件901和白光发光元件902发出的光改变方向，以自所述开口底部向上的方向进入第一光学膜片600中。Specifically, in this embodiment, the backlight module is a side-type backlight module, the blue light emitting element 901 and the white light emitting element 902 are located on the side wall of the opening, and the optical assembly includes The light guide plate 500 at the bottom is used to change the direction of the light emitted by the blue light emitting element 901 and the white light emitting element 902 to enter the first optical film 600 upward from the bottom of the opening.
参考图10，图10为图9中背光模组的局部俯视图。所述蓝光发光元件901和白光发光元件902在所述开口侧壁交替排布。这样的好处在于，所述蓝光发光元件901和白光发光元件902在所述开口侧壁排布均匀，使得经过导光板500传导到第一光学膜片600中的蓝光和白光分布均匀。当白光发光元件902发出白光的亮度与量子点发出白光的亮度不同时，从第一光学膜片600出射的白光也较为均匀，即提高了背光模组发出白光的均匀性，进而有利于提高液晶显示装置的显示效果。Referring to FIG. 10 , FIG. 10 is a partial top view of the backlight module in FIG. 9 . The blue light emitting elements 901 and the white light emitting elements 902 are alternately arranged on the sidewall of the opening. The advantage of this is that the blue light emitting elements 901 and white light emitting elements 902 are evenly arranged on the sidewall of the opening, so that the blue light and white light transmitted to the first optical film 600 through the light guide plate 500 are evenly distributed. When the brightness of the white light emitted by the white light emitting element 902 is different from the brightness of the white light emitted by the quantum dots, the white light emitted from the first optical film 600 is relatively uniform, which improves the uniformity of the white light emitted by the backlight module, which is beneficial to improve the brightness of the liquid crystal. The display effect of the display device.
需要说明的是，在本实施例中，所述蓝光发光元件901和白光发光元件902在所述开口侧壁交替排布，因此所述蓝光发光元件901和白光发光元件902的数量比为1:1。但是本发明对所述蓝光发光元件901和白光发光元件902在所述开口侧壁的排布方式不做限制，在其他实施例中，一个或多个所述蓝光发光元件901可以组成蓝光发光元件组，一个或多个所述白光发光元件902可以组成白光发光元件组，所述蓝光发光元件组和白光发光元件组在所述开口侧壁交替排布。可以通过调节蓝光发光元件组和白光发光元件组中各自包含的所述蓝光发光元件901和白光发光元件902数量，调节背光模组中所述蓝光发光元件901和白光发光元件902的数量比。It should be noted that, in this embodiment, the blue light emitting elements 901 and the white light emitting elements 902 are alternately arranged on the sidewall of the opening, so the ratio of the number of the blue light emitting elements 901 to the white light emitting elements 902 is 1: 1. However, the present invention does not limit the arrangement of the blue light emitting elements 901 and white light emitting elements 902 on the side walls of the opening. In other embodiments, one or more of the blue light emitting elements 901 can form a blue light emitting element One or more white light emitting elements 902 may form a white light emitting element group, and the blue light emitting element groups and white light emitting element groups are alternately arranged on the sidewall of the opening. The quantity ratio of the blue light emitting elements 901 and the white light emitting elements 902 in the backlight module can be adjusted by adjusting the numbers of the blue light emitting elements 901 and the white light emitting elements 902 respectively included in the blue light emitting element group and the white light emitting element group.
需要说明的是，所述白光发光元件902占发光元件的数量比越大，背光模组发出白光的亮度越高。如下表1示出了在背光模组中，蓝光发光元件与白光发光元件数量比不同时，背光模组发出白光的亮度值(坎德拉值)。在现有技术中背光模组中，在蓝光发光元件901和白光发光元件902的数量比为1:0时，也就是仅设置蓝光发光元件901时，背光模组发出的白光亮度为6017.9坎德拉/平方米，在本实施例中，当所述蓝光发光元件901和白光发光元件902的数量比为1:1，所述背光模组发出的白光亮度为9124坎德拉/平方米。在其他实施例中，可以通过调节背光模组中，蓝光发光元件901与白光发光元件902的数量比，来调节背光模组发出的白光亮度。需要说明的是，当背光模组能提供的色彩饱和度为液晶显示装置更为重要的参数时，为了使背光模组能够提供更高的色彩饱和度，所述蓝光发光元件901和白光发光元件902的数量比可以选择在1:1以上。It should be noted that the greater the ratio of the white light emitting elements 902 to the number of light emitting elements, the higher the brightness of the white light emitted by the backlight module. Table 1 below shows the luminance value (candela value) of white light emitted by the backlight module when the number ratio of the blue light emitting elements to the white light emitting elements is different in the backlight module. In the prior art backlight module, when the ratio of blue light emitting elements 901 to white light emitting elements 902 is 1:0, that is, when only blue light emitting elements 901 are provided, the brightness of white light emitted by the backlight module is 6017.9 cd/ In this embodiment, when the ratio of the number of the blue light emitting elements 901 to the white light emitting elements 902 is 1:1, the brightness of the white light emitted by the backlight module is 9124 cd/m2. In other embodiments, the brightness of the white light emitted by the backlight module can be adjusted by adjusting the quantity ratio of the blue light emitting elements 901 to the white light emitting elements 902 in the backlight module. It should be noted that when the color saturation provided by the backlight module is a more important parameter of the liquid crystal display device, in order to enable the backlight module to provide higher color saturation, the blue light emitting element 901 and the white light emitting element The quantity ratio of 902 can be chosen to be above 1:1.
表1Table 1
需要说明的是，为将所述蓝光发光元件901和白光发光元件902的排布情况示意清楚，图10中忽略了框胶301(参考图9)。It should be noted that, in order to illustrate clearly the arrangement of the blue light emitting elements 901 and the white light emitting elements 902 , the sealant 301 is omitted in FIG. 10 (refer to FIG. 9 ).
还需要说明的是，继续参考图9，在本实施例中，所述背板框体与所述光学组件之间还设有反射片400，所述反射片400用于将所述发光元件输出到背板框体上的光反射到所述导光板500中。具体地，在本实施例中，所述反射片400位于所述背板300和导光板500之间。It should also be noted that, continuing to refer to FIG. 9 , in this embodiment, a reflective sheet 400 is further provided between the backplane frame and the optical assembly, and the reflective sheet 400 is used to output the light-emitting element The light incident on the backplane frame is reflected into the light guide plate 500 . Specifically, in this embodiment, the reflective sheet 400 is located between the backplane 300 and the light guide plate 500 .
在所述第一光学膜片600上还设有第二光学膜片结构800，所述第二光学膜片结构800可以包括防紫外膜，防眩光膜等多层光学膜片，本发明对此不作限制。A second optical film structure 800 is also provided on the first optical film 600, and the second optical film structure 800 may include multi-layer optical films such as an anti-ultraviolet film and an anti-glare film. No limit.
参考图11、12，示出了本发明背光模组第二实施例的示意图。本实施例与第一实施例的技术方案大致相同，本实施例与第一实施例的相同之处不再赘述，与第一实施例的不同之处在于：Referring to FIGS. 11 and 12 , schematic diagrams of a second embodiment of the backlight module of the present invention are shown. The technical solution of this embodiment is substantially the same as that of the first embodiment, and the similarities between this embodiment and the first embodiment will not be repeated, and the differences with the first embodiment are:
参考图11，示出了本发明背光模组第二实施例的剖视图，在本实施例中，所述背光模组为直下式背光模组，所述蓝光发光元件901和白光发光元件902位于所述开口底部的背板框体上。所述光学组件包括覆盖于所述发光元件上的扩散板501，所述扩散板501使所述发光元件发出的光均匀地进入第一光学膜片中。Referring to FIG. 11 , it shows a cross-sectional view of the second embodiment of the backlight module of the present invention. In this embodiment, the backlight module is a direct type backlight module, and the blue light emitting element 901 and the white light emitting element 902 are located at the on the backplane frame at the bottom of the above opening. The optical assembly includes a diffuser plate 501 covering the light-emitting element, and the diffuser plate 501 allows the light emitted by the light-emitting element to enter the first optical film uniformly.
参考图12，示出了本实施例所述蓝光发光元件901和白光发光元件902在所述背板框体开口底部的分布示意图，如图12所示，所述蓝光发光元件901和白光发光元件902在所述背板框体开口底部呈阵列状交替均匀分布。这样的好处在于，所述蓝光发光元件901和白光发光元件902在所述开口侧壁排布均匀，使得经过扩散板501传导到第一光学膜片600中的蓝光和白光分布均匀。当白光发光元件902发出白光的亮度与量子点发出白光的亮度不同时，从第一光学膜片600出射的白光也较为均匀，即提高了背光模组发出白光的均匀性，有利于提高液晶显示装置的显示效果。Referring to FIG. 12 , it shows a schematic diagram of the distribution of the blue light emitting element 901 and the white light emitting element 902 at the bottom of the opening of the backplane frame in this embodiment. As shown in FIG. 12 , the blue light emitting element 901 and the white light emitting element 902 are alternately and evenly distributed in an array at the bottom of the opening of the backplane frame. The advantage of this is that the blue light emitting elements 901 and white light emitting elements 902 are evenly arranged on the sidewall of the opening, so that the blue light and white light transmitted to the first optical film 600 through the diffusion plate 501 are evenly distributed. When the brightness of the white light emitted by the white light emitting element 902 is different from the brightness of the white light emitted by the quantum dots, the white light emitted from the first optical film 600 is also relatively uniform, which improves the uniformity of the white light emitted by the backlight module and is conducive to improving the liquid crystal display. The display effect of the device.
需要说明的是，在本实施例中，所述蓝光发光元件901和白光发光元件902所述背板框体开口底部呈阵列状交替均匀分布，因此所述蓝光发光元件901和白光发光元件902的数量比为1:1。但是本发明对所述蓝光发光元件901和白光发光元件902在所述开口底部的排布方式不做限制，在其他实施例中，多个所述蓝光发光元件901可以排成蓝光发光元件行，多个所述白光发光元件902可以排成白光发光元件行，所述蓝光发光元件行和白光发光元件行在所述开口底部交替排布。或者，多个所述白光发光元件902可以均匀地分布于多个蓝光发光元件901组成的阵列中，可以通过调节蓝光发光元件组和白光发光元件组中各自包含的所述蓝光发光元件901和白光发光元件902数量，调节背光模组中所述蓝光发光元件901和白光发光元件902的数量比。It should be noted that, in this embodiment, the blue light emitting element 901 and the white light emitting element 902 are alternately and evenly distributed in an array at the bottom of the opening of the backplane frame, so the blue light emitting element 901 and the white light emitting element 902 The quantity ratio is 1:1. However, the present invention does not limit the arrangement of the blue light emitting elements 901 and white light emitting elements 902 at the bottom of the opening. In other embodiments, a plurality of blue light emitting elements 901 can be arranged in a row of blue light emitting elements, The plurality of white light emitting elements 902 may be arranged in rows of white light emitting elements, and the rows of blue light emitting elements and the rows of white light emitting elements are alternately arranged at the bottom of the opening. Alternatively, a plurality of white light emitting elements 902 may be evenly distributed in an array composed of a plurality of blue light emitting elements 901, and the blue light emitting elements 901 and white light emitting elements contained in the blue light emitting element group and the white light emitting element group may be adjusted to The number of light emitting elements 902 is to adjust the quantity ratio of the blue light emitting elements 901 and the white light emitting elements 902 in the backlight module.
直下式背光模组通常应用于与大尺寸液晶显示装置，因此本实施例背光模组应用于与大尺寸液晶显示装置时，能够有效提高大尺寸液晶面板的亮度和色彩饱和度，从而提高大尺寸液晶显示装置的显示效果。The direct type backlight module is usually applied to a large-size liquid crystal display device, so when the backlight module of this embodiment is applied to a large-size liquid crystal display device, it can effectively improve the brightness and color saturation of a large-size liquid crystal panel, thereby improving the large-size liquid crystal display device. The display effect of the liquid crystal display device.
需要说明的是，在直下式背光模组中，所述扩散板501与背板300之间具有空腔，所述扩散板501通过扩散板支撑柱302支撑于背板300上。It should be noted that, in the direct type backlight module, there is a cavity between the diffuser plate 501 and the back plate 300 , and the diffuser plate 501 is supported on the back plate 300 through the diffuser plate support columns 302 .
此外，本实施例中，所述背板框体中，背板300和框胶301的组合方式也与第一实施例不同，但是这种背板300和框胶301的布置方式为本领域惯用技术，本发明在此不再赘述。In addition, in this embodiment, in the back panel frame, the combination of the back panel 300 and the frame glue 301 is also different from that of the first embodiment, but the arrangement of the back panel 300 and the frame glue 301 is commonly used in the field technology, the present invention will not go into details here.
参考图13，示出了本发明背光模组第三实施例的示意图。本实施例与第一实施例的相同之处不再赘述，与第一实施例的不同之处在于：Referring to FIG. 13 , it shows a schematic diagram of a third embodiment of the backlight module of the present invention. The similarities between this embodiment and the first embodiment will not be repeated, and the differences with the first embodiment are:
所述发光元件仅包括蓝光发光元件901，所述蓝光发光元件901发出蓝光。The light emitting element only includes a blue light emitting element 901, and the blue light emitting element 901 emits blue light.
所述光学组件面向所述发光元件的第一表面为光学组件入光面，所述荧光粉设置于所述光学组件入光面上。The first surface of the optical component facing the light-emitting element is a light incident surface of the optical component, and the phosphor is arranged on the light incident surface of the optical component.
具体地，在本实施例中，所述背光模组为侧入式背光模组，所述光学组件为导光板500，所述导光板500面向所述蓝光发光元件901的第一表面G4为光学组件入光面，在所述光学组件入光面上形成有第三荧光涂层702，所述第三荧光涂层702中设有荧光粉，用于将所述蓝光发光元件901发出的部分蓝光转化为白光。Specifically, in this embodiment, the backlight module is a side-type backlight module, the optical component is a light guide plate 500, and the first surface G4 of the light guide plate 500 facing the blue light emitting element 901 is an optical On the light incident surface of the optical component, a third fluorescent coating 702 is formed on the light incident surface of the optical component. Phosphor powder is arranged in the third fluorescent coating 702 to absorb part of the blue light emitted by the blue light emitting element 901 converted to white light.
具体地，所述蓝光发光元件901发出的部分蓝光激发荧光粉而发出白光，另一部分蓝光不会激发荧光粉，而是依然以蓝光透过第三荧光涂层702输出，所述另一部分蓝光由第一光学膜片600转化为白光。转化成白光的蓝光010和未转化的蓝光的光通量之比与第三荧光涂层702中荧光粉含量有关。Specifically, part of the blue light emitted by the blue light emitting element 901 excites the phosphor to emit white light, and the other part of the blue light does not excite the phosphor, but is still output as blue light through the third fluorescent coating 702, and the other part of the blue light is emitted by the third fluorescent coating 702. The first optical film 600 converts into white light. The ratio of the luminous flux of the blue light 010 converted into white light to the unconverted blue light is related to the phosphor powder content in the third fluorescent coating 702 .
所述荧光粉设置于所述光学组件入光面上的好处在于，所述荧光粉距离所述蓝光发光元件901较近，所述蓝光发光元件901发出的蓝光出射后直接进入第三荧光涂层702，使得荧光粉接收的蓝光较多，荧光粉受激发发出的曝光亮度更大。The advantage of the fluorescent powder being arranged on the light-incident surface of the optical component is that the fluorescent powder is relatively close to the blue light emitting element 901, and the blue light emitted by the blue light emitting element 901 directly enters the third fluorescent coating after exiting. 702, so that the phosphor powder receives more blue light, and the exposure brightness emitted by the phosphor powder is greater.
参考图14，示出了本发明背光模组第四实施例的示意图。本实施例与第三实施例的相同之处不再赘述，与第三实施例的不同之处在于：Referring to FIG. 14 , it shows a schematic view of the fourth embodiment of the backlight module of the present invention. The similarities between this embodiment and the third embodiment will not be repeated, and the differences with the third embodiment are:
所述光学组件面向所述第一光学膜片600的第二表面为光学组件出光面，所述荧光粉设置于所述光学组件出光面上。The second surface of the optical component facing the first optical film 600 is the light-emitting surface of the optical component, and the phosphor is disposed on the light-emitting surface of the optical component.
具体地，在本实施例中，所述背光模组为侧入式背光模组，所述光学组件为导光板500，所述导光板500面向所述第一光学膜片600的第二表面G5为光学组件出光面，在所述光学组件出光面上形成有第四荧光涂层703，所述第四荧光涂层703中设有荧光粉，用于将所述蓝光发光元件901发出的部分蓝光转化为白光。Specifically, in this embodiment, the backlight module is a side-type backlight module, the optical component is a light guide plate 500, and the light guide plate 500 faces the second surface G5 of the first optical film 600 It is the light-emitting surface of the optical component, and a fourth fluorescent coating 703 is formed on the light-emitting surface of the optical component. Phosphor powder is arranged in the fourth fluorescent coating 703, which is used to emit part of the blue light emitted by the blue light emitting element 901 converted to white light.
参考图15，示出了本发明背光模组第五实施例的示意图。本实施例与第三实施例的相同之处不再赘述，与第三实施例的不同之处在于：Referring to FIG. 15 , it shows a schematic diagram of a fifth embodiment of the backlight module of the present invention. The similarities between this embodiment and the third embodiment will not be repeated, and the differences with the third embodiment are:
在本实施例中，所述荧光粉设置于所述反射片400面向所述光学组件的一侧上。In this embodiment, the fluorescent powder is disposed on the side of the reflective sheet 400 facing the optical component.
具体地，在本实施例中，所述背光模组为侧入式背光模组，所述光学组件为导光板500，在所述反射片400面向所述导光板500的一侧的第三表面G6上形成有第五荧光涂层704，所述第五荧光涂层704中设有荧光粉，用于将所述蓝光发光元件901发出的部分蓝光转化为白光。Specifically, in this embodiment, the backlight module is an edge-type backlight module, the optical component is a light guide plate 500 , and the third surface of the reflection sheet 400 facing the light guide plate 500 A fifth fluorescent coating 704 is formed on G6, and phosphor powder is disposed in the fifth fluorescent coating 704 for converting part of the blue light emitted by the blue light emitting element 901 into white light.
参考图16，示出了本发明背光模组第六实施例的示意图。本实施例与第三实施例的相同之处不再赘述，与第三实施例的不同之处在于：Referring to FIG. 16 , it shows a schematic diagram of a sixth embodiment of the backlight module of the present invention. The similarities between this embodiment and the third embodiment will not be repeated, and the differences with the third embodiment are:
所述第一光学膜片600面向所述光学组件的表面为第一光学膜片600入光面，所述荧光粉设置于所述第一光学膜片600入光面上。The surface of the first optical film 600 facing the optical component is the light incident surface of the first optical film 600 , and the phosphor is disposed on the light incident surface of the first optical film 600 .
具体地，在本实施例中，所述背光模组为侧入式背光模组，所述光学组件为导光板500，所述第一光学膜片600面向所述导光板500的第四表面G7上形成有第六荧光涂层705，在所述第六荧光涂层705中设有荧光粉，用于将所述蓝光发光元件901发出的部分蓝光转化为白光。Specifically, in this embodiment, the backlight module is a side-type backlight module, the optical component is a light guide plate 500, and the first optical film 600 faces the fourth surface G7 of the light guide plate 500. A sixth fluorescent coating 705 is formed on it, and fluorescent powder is arranged in the sixth fluorescent coating 705 for converting part of the blue light emitted by the blue light emitting element 901 into white light.
所述荧光粉设置于所述第一光学膜片600入光面上的好处在于，所述蓝光发光元件901发出的部分蓝光在背板框体内部经过多次反射后，最终均通过所述第六荧光涂层705进入第一光学膜片600，因此本实施中的荧光粉能够受到背板框体内部各路反射蓝光的激发，提高了荧光粉对背光模组中蓝光的利用率。The advantage of the fluorescent powder being arranged on the light-incident surface of the first optical film 600 is that part of the blue light emitted by the blue light emitting element 901 is reflected multiple times inside the backplane frame and finally passes through the first optical film 600. Six fluorescent coatings 705 enter the first optical film 600, so the fluorescent powder in this embodiment can be excited by the reflected blue light from various channels inside the backplane frame, which improves the utilization rate of the fluorescent powder to the blue light in the backlight module.
需要说明的是，在上述的第四至第六实施例中，所述背光模组为侧入式背光模组还可以为直下式背光模组，所述光学组件还可以为扩散板。It should be noted that, in the above-mentioned fourth to sixth embodiments, the backlight module may be an edge-type backlight module or may be a direct-type backlight module, and the optical component may also be a diffuser plate.
参考图17，示出了本发明背光模组第七实施例的示意图。本实施例与第一实施例的技术方案大致相同，所述背光模组为侧入式背光模组，所述发光元件100位于背板框体开口的侧壁上，与第一实施例的相同之处不再赘述，与第一实施例的不同之处在于：Referring to FIG. 17 , it shows a schematic diagram of a seventh embodiment of the backlight module of the present invention. The technical solution of this embodiment is substantially the same as that of the first embodiment. The backlight module is a side-type backlight module, and the light emitting element 100 is located on the side wall of the opening of the backplane frame, which is the same as that of the first embodiment. The place will not be repeated, and the difference from the first embodiment is:
本实施例中，所述发光元件100为本发明提供的发光装置中的发光元件100，因此，可以结合参考图3，本实施例中，所述发光元件100包括：In this embodiment, the light-emitting element 100 is the light-emitting element 100 in the light-emitting device provided by the present invention. Therefore, reference can be made to FIG. 3 . In this embodiment, the light-emitting element 100 includes:
LED发光晶片101，用于发光。The LED light emitting chip 101 is used for emitting light.
包覆所述LED发光晶片101的保护结构，所述保护结构中设置有荧光粉。所述发光元件100包括所述LED发光晶片101和保护结构。A protection structure covering the LED light-emitting chip 101 , phosphor powder is arranged in the protection structure. The light emitting element 100 includes the LED light emitting chip 101 and a protection structure.
本实施例中，所述LED发光晶片101具有出光面，所述第一光学膜片200设置在所述LED发光晶片101出光面的一侧，且在所述LED发光晶片101发出的光的光路上。In this embodiment, the LED light-emitting chip 101 has a light-emitting surface, the first optical film 200 is arranged on one side of the light-emitting surface of the LED light-emitting chip 101, and the light emitted by the LED light-emitting chip 101 on the way.
在本实施例中，所述LED发光晶片101发出蓝光，所述荧光粉包括黄色荧光粉、黄红混合荧光粉或红绿混合荧光粉中的一种。但是本发明对此不作限制，可选的，在其他实施例中，所述LED发光晶片101还可以发出紫外光。In this embodiment, the LED light-emitting chip 101 emits blue light, and the phosphor includes one of yellow phosphor, yellow-red mixed phosphor or red-green mixed phosphor. However, the present invention is not limited thereto. Optionally, in other embodiments, the LED light-emitting chip 101 can also emit ultraviolet light.
继续参考图3，本实施例中，所述保护结构包括：Continuing to refer to FIG. 3, in this embodiment, the protection structure includes:
包覆所述LED发光晶片101出光面的透明保护层102；A transparent protective layer 102 covering the light-emitting surface of the LED light-emitting chip 101;
壳体104，所述透明保护层102和LED发光晶片101内嵌于所述壳体104中，所述壳体104露出所述透明保护层102。The casing 104 , the transparent protective layer 102 and the LED light-emitting chip 101 are embedded in the casing 104 , and the transparent protective layer 102 is exposed from the casing 104 .
在本实施例中，所述透明保护层102包括中心区域1021和围绕所述中心区域的周边区域1022，所述荧光粉分布于所述周边区域1022中。In this embodiment, the transparent protective layer 102 includes a central area 1021 and a peripheral area 1022 surrounding the central area, and the phosphor powder is distributed in the peripheral area 1022 .
继续参考图3，所述荧光粉能够受到所述LED发光晶片101发出的部分蓝光激发，从而出射白光，也就是说，所述荧光粉将部分蓝光010转化为白光。从所述LED发光晶片101发出的另一部分蓝光010通过透明保护层102后，仍以蓝光出射，经过第一光学膜片600后转化为白光。Continuing to refer to FIG. 3 , the phosphor powder can be excited by part of the blue light emitted by the LED light-emitting chip 101 to emit white light, that is, the phosphor powder converts part of the blue light 010 into white light. Another part of the blue light 010 emitted from the LED light-emitting chip 101 passes through the transparent protective layer 102 and is still emitted as blue light, and is converted into white light after passing through the first optical film 600 .
与通过第一光学膜片600，将部分进入第一光学膜片600的蓝光转化为白光相比，所述荧光粉受光激发从而出射的白光相对进入荧光粉的蓝光具有更高的光转化率，也就是说，同样光强的蓝光分别入射荧光粉和第一光学膜片600，荧光粉输出的白光比第一光学膜片输出的白光具有更高的亮度，因此，本实施例背光模组同时采用荧光粉激发发光和量子点发光两种方式发出白光，与现有技术进采用量子点发光方式的背光模组相比，发出的白光亮度更高，同时还能为显示装置提供较高的色彩饱和度。Compared with converting part of the blue light entering the first optical film 600 into white light through the first optical film 600, the white light emitted by the phosphor powder excited by light has a higher light conversion rate than the blue light entering the phosphor powder, That is to say, blue light with the same light intensity enters the phosphor powder and the first optical film 600 respectively, and the white light output by the phosphor powder has higher brightness than the white light output by the first optical film. Therefore, the backlight module of this embodiment simultaneously Using fluorescent powder to emit light and quantum dot light to emit white light, compared with the prior art backlight module that uses quantum dot light, the brightness of white light is higher, and at the same time it can provide a higher color for the display device. saturation.
需要说明的是，在其他实施例中，当所述荧光粉同样设置于所述保护结构中时，可选的，本发明背光模组中的发光元件还可以为本发明提供的发光装置第三实施例至第六实施例中任一实施例中的发光元件，例如，所述透明保护层102包括中心区域和围绕所述中心区域的周边区域，所述荧光粉分布于所述中心区域中。It should be noted that, in other embodiments, when the fluorescent powder is also arranged in the protective structure, optionally, the light-emitting element in the backlight module of the present invention can also be the third light-emitting device provided by the present invention. For the light-emitting element in any one of the embodiments to the sixth embodiment, for example, the transparent protective layer 102 includes a central area and a peripheral area surrounding the central area, and the phosphor is distributed in the central area.
或者，所述壳体104露出所述透明保护层102的表面为第一上表面，所述第一上表面设置有第一荧光涂层，所述荧光粉分布于所述第一荧光涂层中。这样的好处在于，由于所述荧光粉分布于所述第一荧光涂层中，所述第一荧光涂层能够接收经背光模组内部反射回的部分蓝光，并使所述反射回的部分蓝光转化为白光。所述第一荧光涂层将所述光传输环境反射回的部分蓝光重复利用，使其转化为白光并透过第一光学膜片600输出，增大了所述背光模组的光利用率，有效提高了背光模组的发光亮度。Alternatively, the surface of the casing 104 exposed from the transparent protective layer 102 is the first upper surface, and the first upper surface is provided with a first fluorescent coating, and the fluorescent powder is distributed in the first fluorescent coating . The advantage of this is that, since the fluorescent powder is distributed in the first fluorescent coating, the first fluorescent coating can receive part of the blue light reflected back through the backlight module, and make the reflected part of the blue light converted to white light. The first fluorescent coating reuses part of the blue light reflected back from the light transmission environment, converting it into white light and outputting it through the first optical film 600, increasing the light utilization rate of the backlight module, The luminous brightness of the backlight module is effectively improved.
本发明对所述荧光粉在所述保护结构中的设置方式不做限制。述荧光粉设置于所述保护结构中的作用在于，使所述发光元件能够同时采用荧光粉激发发光和量子点发光两种方式发出白光，进而使得本发明的背光模组能够同时采用荧光粉激发发光和量子点发光两种方式发出白光。The present invention does not limit the arrangement of the phosphor in the protective structure. The role of the fluorescent powder in the protective structure is to enable the light-emitting element to emit white light in two ways: fluorescent powder excitation and quantum dot light emission, so that the backlight module of the present invention can simultaneously adopt phosphor powder excitation There are two ways of emitting white light: luminescence and quantum dot luminescence.
需要说明的是，图3为发光元件100的剖视图，未示出发光元件100上表面的形状，本发明的发光元件中，所述壳体104的第一上表面可以为矩形、圆形等任意形状，所述透明保护层102背离所述LED发光晶片101的表面为第二上表面，所述第二上表面可以为矩形、圆形等任意形状，本发明对此均不做限制。It should be noted that FIG. 3 is a cross-sectional view of the light emitting element 100, and the shape of the upper surface of the light emitting element 100 is not shown. In the light emitting element of the present invention, the first upper surface of the housing 104 can be any shape such as a rectangle or a circle Shape, the surface of the transparent protective layer 102 facing away from the LED light-emitting chip 101 is the second upper surface, and the second upper surface can be in any shape such as rectangle, circle, etc., which is not limited in the present invention.
这些具体设置方式可以参考本发明提供的放光装置的各个实施例中，发光元件的具体结构，本发明对此不再赘述。For these specific setting methods, reference can be made to the specific structure of the light emitting element in each embodiment of the light emitting device provided by the present invention, which will not be repeated in the present invention.
参考图18，示出了本发明背光模组第八实施例的示意图。本实施例与第七实施例的技术方案大致相同，与第七实施例的相同之处不再赘述，与第七实施例的不同之处在于：Referring to FIG. 18 , it shows a schematic view of the eighth embodiment of the backlight module of the present invention. The technical solution of this embodiment is substantially the same as that of the seventh embodiment, and the similarities with the seventh embodiment will not be repeated. The differences with the seventh embodiment are:
在本实施例中，所述背光模组为直下式背光模组，所述发光元件100位于所述开口底部的背板框体上。所述光学组件包括覆盖于所述发光元件上的扩散板501，所述扩散板501使所述发光元件发出的光均匀地进入第一光学膜片中。In this embodiment, the backlight module is a direct type backlight module, and the light emitting element 100 is located on the backplane frame at the bottom of the opening. The optical assembly includes a diffuser plate 501 covering the light-emitting element, and the diffuser plate 501 allows the light emitted by the light-emitting element to enter the first optical film evenly.
直下式背光模组通常应用于与大尺寸液晶显示装置，因此本实施例背光模组应用于与大尺寸液晶显示装置时，能够有效提高大尺寸液晶面板的亮度和色彩饱和度，从而提高大尺寸液晶显示装置的显示效果。The direct type backlight module is usually applied to a large-size liquid crystal display device, so when the backlight module of this embodiment is applied to a large-size liquid crystal display device, it can effectively improve the brightness and color saturation of a large-size liquid crystal panel, thereby improving the large-size liquid crystal display device. The display effect of the liquid crystal display device.
需要说明的是，在直下式背光模组中，所述扩散板501与背板300之间具有空腔，所述扩散板501通过扩散板支撑柱302支撑于背板300上。It should be noted that, in the direct type backlight module, there is a cavity between the diffuser plate 501 and the back plate 300 , and the diffuser plate 501 is supported on the back plate 300 through the diffuser plate support columns 302 .
此外，本实施例中，所述背板框体中，背板300和框胶301的布置方式也与第一实施例不同，但是这种背板300和框胶301的布置方式为本领域惯用技术，本发明在此不再赘述。In addition, in this embodiment, in the back panel frame, the arrangement of the back panel 300 and the sealant 301 is also different from that of the first embodiment, but the arrangement of the back panel 300 and the sealant 301 is commonly used in the field technology, the present invention will not go into details here.
本发明还提供一种液晶显示装置，包括：本发明提供的背光模组；位于所述背光模组上的液晶显示面板。The present invention also provides a liquid crystal display device, comprising: the backlight module provided by the present invention; and a liquid crystal display panel located on the backlight module.
本发明提供的背光模组同时采用荧光粉激发发光和量子点发光两种方式发出白光，与现有技术仅采用量子点发光方式的背光模组相比，发出的白光亮度更高，同时还能为显示装置提供较高的色彩饱和度。因此本发明液晶显示装置的亮度和色彩饱和度较高，显示效果较好。The backlight module provided by the present invention emits white light by simultaneously adopting phosphor powder excitation light emission and quantum dot light emission method. Provides high color saturation for display devices. Therefore, the brightness and color saturation of the liquid crystal display device of the present invention are higher, and the display effect is better.
本发明虽然已以较佳实施例公开如上，但其并不是用来限定本发明，任何本领域技术人员在不脱离本发明的精神和范围内，都可以利用上述揭示的方法和技术内容对本发明技术方案做出可能的变动和修改，因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化及修饰，均属于本发明技术方案的保护范围。Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the methods disclosed above and technical content to analyze the present invention without departing from the spirit and scope of the present invention. Possible changes and modifications are made in the technical solution. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention, which do not depart from the content of the technical solution of the present invention, all belong to the technical solution of the present invention. protected range.
| Application Number | Priority Date | Filing Date | Title |
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| CN201410855442.4ACN104483778B (en) | 2014-12-31 | 2014-12-31 | Light-emitting device, backlight module and liquid crystal display device |
| Application Number | Priority Date | Filing Date | Title |
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| CN201410855442.4ACN104483778B (en) | 2014-12-31 | 2014-12-31 | Light-emitting device, backlight module and liquid crystal display device |
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| CN104483778A CN104483778A (en) | 2015-04-01 |
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| CN201410855442.4AActiveCN104483778B (en) | 2014-12-31 | 2014-12-31 | Light-emitting device, backlight module and liquid crystal display device |
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