技术领域technical field
本实用新型涉及显示技术领域，尤指一种反射式液晶显示面板及显示装置。The utility model relates to the field of display technology, in particular to a reflective liquid crystal display panel and a display device.
背景技术Background technique
反射式液晶显示器，是一种利用环境光作为光源来实现画面显示的液晶显示器，其中，反射式液晶显示面板的具体结构如图1a和图1b所示，包括相对而置的阵列基板1和对向基板2、设置于阵列基板1和对向基板2之间的液晶层3、设置于对向基板2背离液晶层3一侧的吸收型偏光片4、设置于阵列基板1面向液晶层3一侧的反射电极5、以及设置于对向基板2面向液晶层3一侧或设置于反射电极5面向液晶层3一侧的吸收型彩膜层6；其中，反射电极5能够将入射光反射回液晶层3，而吸收型彩膜层6则可以通过吸收其他波长的光而反射特定的颜色，以实现彩色画面的显示。A reflective liquid crystal display is a liquid crystal display that utilizes ambient light as a light source to display images. The specific structure of the reflective liquid crystal display panel is shown in Figure 1a and Figure 1b, including an array substrate 1 facing opposite to each other. The facing substrate 2, the liquid crystal layer 3 arranged between the array substrate 1 and the facing substrate 2, the absorbing polarizer 4 arranged on the side of the facing substrate 2 facing away from the liquid crystal layer 3, and the absorbing polarizer 4 arranged on the array substrate 1 facing the liquid crystal layer 3 The reflective electrode 5 on the side, and the absorbing color filter layer 6 arranged on the side of the opposite substrate 2 facing the liquid crystal layer 3 or on the side of the reflective electrode 5 facing the liquid crystal layer 3; wherein the reflective electrode 5 can reflect the incident light back The liquid crystal layer 3, and the absorbing color filter layer 6 can reflect specific colors by absorbing light of other wavelengths, so as to realize the display of color pictures.
当反射型液晶显示器在环境光充足时，可以完美地实现显示功能；而在环境光不足或是暗室状态下光利用率很低，严重影响画面的显示效果。When the ambient light is sufficient, the reflective liquid crystal display can perfectly realize the display function; however, when the ambient light is insufficient or in a dark room, the light utilization rate is very low, which seriously affects the display effect of the picture.
基于此，如何提高反射式液晶显示器的光利用率，提高画面的显示质量，是本领域技术人亟待解决的技术问题。Based on this, how to improve the light utilization efficiency of the reflective liquid crystal display and improve the display quality of the picture is a technical problem to be solved urgently by those skilled in the art.
实用新型内容Utility model content
本实用新型实施例提供了一种反射式液晶显示面板及显示装置，用以解决如何提高反射式液晶显示器的光利用率，提高画面的显示质量。The embodiment of the utility model provides a reflective liquid crystal display panel and a display device to solve how to improve the light utilization rate of the reflective liquid crystal display and improve the display quality of the picture.
本实用新型实施例提供了一种反射式液晶显示面板，包括：相对而置的阵列基板和对向基板，位于所述对向基板与所述阵列基板之间的液晶层，位于所述对向基板背离所述液晶层一侧的吸收型偏光片，位于所述阵列基板面向所述液晶层一侧的多个像素电极，位于所述像素电极与所述阵列基板之间的反射型偏光结构，位于所述反射型偏光结构背离所述像素电极一侧的多个光转换结构，以及位于所述光转换结构背离所述反射型偏光结构一侧的反射镜；其中，An embodiment of the present invention provides a reflective liquid crystal display panel, comprising: an array substrate and an opposing substrate, a liquid crystal layer located between the opposing substrate and the array substrate, and a liquid crystal layer located between the opposing substrate and the opposing substrate. an absorbing polarizer on the side of the substrate away from the liquid crystal layer, a plurality of pixel electrodes located on the side of the array substrate facing the liquid crystal layer, a reflective polarizing structure located between the pixel electrodes and the array substrate, A plurality of light converting structures located on the side of the reflective polarizing structure away from the pixel electrode, and a mirror located on the side of the light converting structure away from the reflective polarizing structure; wherein,
所述像素电极与所述光转换结构一一对应；所述光转换结构，用于将入射光转换为与所述像素电极所在的像素单元对应颜色的光；The pixel electrode is in one-to-one correspondence with the light conversion structure; the light conversion structure is used to convert incident light into light of a color corresponding to the pixel unit where the pixel electrode is located;
所述反射型偏光结构的光反射轴与所述吸收型偏光片的光透过轴相互平行或垂直。The light reflection axis of the reflective polarizing structure is parallel to or perpendicular to the light transmission axis of the absorption polarizer.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述反射型偏光结构为金属线栅偏光结构。In a possible implementation manner, in the reflective liquid crystal display panel provided by the embodiment of the present invention, the reflective polarizing structure is a metal wire grid polarizing structure.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述金属线栅偏光结构与所述像素电极电连接。In a possible implementation manner, in the reflective liquid crystal display panel provided by the embodiment of the present invention, the metal wire grid polarizing structure is electrically connected to the pixel electrode.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述金属线栅偏光结构与所述像素电极为一体结构。In a possible implementation manner, in the reflective liquid crystal display panel provided by the embodiment of the present invention, the metal wire grid polarizing structure and the pixel electrode are integrally structured.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述反射镜位于所述阵列基板与所述光转换结构之间。In a possible implementation manner, in the reflective liquid crystal display panel provided by the embodiment of the present invention, the reflective mirror is located between the array substrate and the light conversion structure.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述反射镜与所述阵列基板中的源漏极金属同层设置，或与栅极金属同层设置。In a possible implementation manner, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, the reflector is arranged on the same layer as the source and drain metals in the array substrate, or is arranged on the same layer as the gate metal. layer settings.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述反射镜位于所述阵列基板背离所述对向基板的一侧。In a possible implementation manner, in the reflective liquid crystal display panel provided by the embodiment of the present invention, the reflector is located on a side of the array substrate away from the opposite substrate.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，与所述光转换结构对应的所述像素电极所在的像素单元为可见光波段内的低频光；In a possible implementation manner, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, the pixel unit where the pixel electrode corresponding to the light conversion structure is located is low-frequency light in the visible light band;
所述光转换结构，包括用于将可见光波段内的高频光和中频光转换为所述低频光的下转换材料。The light conversion structure includes a down-conversion material for converting high-frequency light and intermediate-frequency light in the visible light band into the low-frequency light.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，与所述光转换结构对应的所述像素电极所在的像素单元为可见光波段内的高频光；In a possible implementation manner, in the reflective liquid crystal display panel provided by the embodiment of the present invention, the pixel unit where the pixel electrode corresponding to the light conversion structure is located is high-frequency light in the visible light band;
所述光转换结构，包括用于将可见光波段内的低频光和中频光转换为所述高频光的上转换材料。The light conversion structure includes an up-conversion material for converting low-frequency light and intermediate-frequency light in the visible light band into the high-frequency light.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，与所述光转换结构对应的所述像素电极所在的像素单元为可见光波段内的中频光；In a possible implementation manner, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, the pixel unit where the pixel electrode corresponding to the light conversion structure is located is intermediate frequency light in the visible light band;
所述光转换结构，包括用于将可见光波段内的低频光转换为所述中频光的上转换材料，和/或用于将可见光波段内的高频光转换为所述中频光的下转换材料。The light conversion structure includes an up-conversion material for converting low-frequency light in the visible light band to the intermediate-frequency light, and/or a down-conversion material for converting high-frequency light in the visible light band to the intermediate-frequency light.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述下转换材料包括：无机发光材料和有机发光材料之一或组合。In a possible implementation manner, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, the down-converting material includes: one or a combination of inorganic light-emitting materials and organic light-emitting materials.
在一种可能的实施方式中，在本实用新型实施例提供的上述反射式液晶显示面板中，所述上转换材料包括：掺杂稀土离子的无机化合物。In a possible implementation manner, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, the up-conversion material includes: an inorganic compound doped with rare earth ions.
本实用新型实施例还提供了一种显示装置，包括：如本实用新型实施例提供的上述反射式液晶显示面板。The embodiment of the present invention also provides a display device, including: the above-mentioned reflective liquid crystal display panel as provided in the embodiment of the present invention.
本实用新型有益效果如下：The beneficial effects of the utility model are as follows:
本实用新型实施例提供的一种反射式液晶显示面板及显示装置，包括：相对而置的阵列基板和对向基板，位于对向基板与阵列基板之间的液晶层，位于对向基板背离液晶层一侧的吸收型偏光片，位于阵列基板面向液晶层一侧的多个像素电极，位于像素电极与阵列基板之间的反射型偏光结构，位于反射型偏光结构背离像素电极一侧的多个光转换结构，以及位于光转换结构背离反射型偏光结构一侧的反射镜；像素电极与光转换结构一一对应；光转换结构，用于将入射光转换为与像素电极所在的像素单元对应颜色的光；反射型偏光结构的光反射轴与吸收型偏光片的光透过轴相互平行或垂直。因此，通过光转换结构的设置，可以将入射光转换为与像素电极所在的像素单元对应颜色的光，与现有技术中只反射特定波长的光而发光的结构相比，大大增加了光的利用率；并且，结合反射型偏光结构的设置，将光转换结构发出的光，通过反射型偏光结构的偏振选择后进入液晶层，有效避免了因光转换结构引起的光偏振状态改变而导致的画面不能正常显示的问题，不仅保证了显示面板的正常显示，还提高了显示画面的质量。A reflective liquid crystal display panel and a display device provided by embodiments of the present invention include: an array substrate and an opposing substrate facing each other, a liquid crystal layer located between the opposing substrate and the array substrate, and a liquid crystal layer located between the opposing substrate and away from the liquid crystal. Absorptive polarizer on one side of the layer, multiple pixel electrodes located on the side of the array substrate facing the liquid crystal layer, reflective polarizing structures located between the pixel electrodes and the array substrate, multiple pixel electrodes located on the side of the reflective polarizing structure away from the pixel electrodes A light conversion structure, and a mirror located on the side of the light conversion structure away from the reflective polarizing structure; the pixel electrodes correspond to the light conversion structure one by one; the light conversion structure is used to convert incident light into a color corresponding to the pixel unit where the pixel electrode is located The light; the light reflection axis of the reflective polarizer structure and the light transmission axis of the absorbing polarizer are parallel or perpendicular to each other. Therefore, through the arrangement of the light conversion structure, the incident light can be converted into light of the color corresponding to the pixel unit where the pixel electrode is located. Compared with the structure in the prior art that only reflects light of a specific wavelength and emits light, the intensity of light is greatly increased. Utilization rate; and, combined with the setting of the reflective polarizing structure, the light emitted by the light conversion structure enters the liquid crystal layer through the polarization selection of the reflective polarizing structure, effectively avoiding the change of the light polarization state caused by the light conversion structure. The problem that the picture cannot be displayed normally not only ensures the normal display of the display panel, but also improves the quality of the displayed picture.
附图说明Description of drawings
图1a和图1b分别为现有技术中的反射式液晶显示面板的侧视图；Figure 1a and Figure 1b are side views of reflective liquid crystal display panels in the prior art, respectively;
图2至图5分别为本实用新型实施例中的反射式液晶显示面板的侧视图；2 to 5 are side views of reflective liquid crystal display panels in embodiments of the present invention;
图6为本实用新型实施例中提供的常白模式的显示面板为常白模式时的工作原理示意图；6 is a schematic diagram of the working principle of the display panel in the normally white mode provided in the embodiment of the present invention when it is in the normally white mode;
图7为本实用新型实施例中提供的常白模式的显示面板为黑态时的工作原理示意图；Fig. 7 is a schematic diagram of the working principle of the display panel in the normally white mode provided in the embodiment of the present invention when it is in the black state;
图8为本实用新型实施例中提供的常白模式的显示面板显示各种灰阶画面时的工作原理示意图；Fig. 8 is a schematic diagram of the working principle of the normally white mode display panel provided in the embodiment of the present invention when displaying various grayscale images;
图9为本实用新型实施例中提供的光转换结构的俯视图。Fig. 9 is a top view of the light conversion structure provided in the embodiment of the present invention.
具体实施方式detailed description
下面将结合附图，对本实用新型实施例提供的一种反射式液晶显示面板及显示装置的具体实施方式进行详细地说明。需要说明的是，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The specific implementation manners of a reflective liquid crystal display panel and a display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
本实用新型实施例提供了一种反射式液晶显示面板，如图2至图5所示，可以包括：相对而置的阵列基板10和对向基板20，位于对向基板20与阵列基板10之间的液晶层30，位于对向基板20背离液晶层30一侧的吸收型偏光片40，位于阵列基板10面向液晶层30一侧的多个像素电极50，位于像素电极50与阵列基板10之间的反射型偏光结构60，位于反射型偏光结构60背离像素电极50一侧的多个光转换结构70，以及位于光转换结构70背离反射型偏光结构60一侧的反射镜80；其中，The embodiment of the present utility model provides a reflective liquid crystal display panel, as shown in FIG. 2 to FIG. The liquid crystal layer 30 between them, the absorbing polarizer 40 located on the side of the opposite substrate 20 facing away from the liquid crystal layer 30, the plurality of pixel electrodes 50 located on the side of the array substrate 10 facing the liquid crystal layer 30, located between the pixel electrodes 50 and the array substrate 10 The reflective polarizing structure 60 between them, a plurality of light conversion structures 70 located on the side of the reflective polarizing structure 60 away from the pixel electrode 50, and a mirror 80 located on the side of the light converting structure 70 away from the reflective polarizing structure 60; wherein,
像素电极50与光转换结构70一一对应；光转换结构70，用于将入射光转换为与像素电极50所在的像素单元对应颜色的光；The pixel electrode 50 has a one-to-one correspondence with the light conversion structure 70; the light conversion structure 70 is used to convert incident light into light of a color corresponding to the pixel unit where the pixel electrode 50 is located;
反射型偏光结构60的光反射轴与吸收型偏光片40的光透过轴相互平行或垂直。The light reflection axis of the reflective polarizing structure 60 and the light transmission axis of the absorbing polarizer 40 are parallel or perpendicular to each other.
本实用新型实施例提供的上述反射式液晶显示面板，通过光转换结构的设置，可以将入射光转换为与像素电极所在的像素单元对应颜色的光，与现有技术中只反射特定波长的光而发光的结构相比，大大增加了光的利用率；并且，结合反射型偏光结构的设置，将光转换结构发出的光，通过反射型偏光结构的偏振选择后进入液晶层，有效避免了因光转换结构引起的光偏振状态改变而导致的画面不能正常显示的问题，不仅保证了显示面板的正常显示，还提高了显示画面的质量。The above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention can convert the incident light into the light of the color corresponding to the pixel unit where the pixel electrode is located by setting the light conversion structure, which is different from the prior art that only reflects light of a specific wavelength Compared with the light-emitting structure, the utilization rate of light is greatly increased; and, combined with the setting of the reflective polarizing structure, the light emitted by the light conversion structure enters the liquid crystal layer through the polarization selection of the reflective polarizing structure, effectively avoiding the The problem that the picture cannot be displayed normally due to the change of the light polarization state caused by the light conversion structure not only ensures the normal display of the display panel, but also improves the quality of the displayed picture.
在具体实施时，当本实用新型实施例提供的上述反射式液晶显示面板为常白模式时，需将反射型偏光结构的光反射轴与吸收型偏光片的光透过轴设置为相互平行。如图6所示的示意图，若吸收型偏光片40的光透过轴为X方向，则只有偏振方向为X的光线才能透过吸收型偏光片40，当X方向的偏振光经过液晶层30入射至反射型偏光结构60的表面时，因液晶无旋光性，使得光线的偏振方向仍然为X；入射至反射型偏光结构60表面的X方向的偏振光全部被反射，再通过液晶层30后仍然为X方向的偏振光，并经过吸收型偏光片40发射出显示面板，构成常白模式。In actual implementation, when the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention is in normally white mode, the light reflection axis of the reflective polarizer structure and the light transmission axis of the absorbing polarizer need to be set parallel to each other. As shown in Figure 6, if the light transmission axis of the absorbing polarizer 40 is in the X direction, only light with the polarization direction X can pass through the absorbing polarizer 40. When the polarized light in the X direction passes through the liquid crystal layer 30 When it is incident on the surface of the reflective polarizing structure 60, the polarization direction of the light is still X due to the inactivity of the liquid crystal; The polarized light in the X direction is still emitted out of the display panel through the absorbing polarizer 40 to form a normally white mode.
具体地，当需要采用常白模式的显示面板显示黑态时，可以通过控制电压，使光线在经过液晶层后偏振方向旋转90°；例如，如图7所示，透过吸收型偏光片40的X方向的偏振光在穿过液晶层30后，偏振方向变为与X方向垂直的Y方向，进而全部透过反射型偏光结构60而进入到光转换结构70中激发出M方向的偏振光，经反射镜80的反射而入射到反射型偏光结构60，M方向的偏振光中的X方向分量的偏振光X’通过反射型偏光结构60后进入到液晶层30中，再经液晶层30的偏转变成Y方向的偏振光，进而被吸收型偏光片40所吸收(如双箭头所示)，由此显示黑态。Specifically, when it is necessary to use a normally white display panel to display a black state, the polarization direction of light can be rotated by 90° after passing through the liquid crystal layer by controlling the voltage; for example, as shown in FIG. After the polarized light in the X direction passes through the liquid crystal layer 30, the polarization direction becomes the Y direction perpendicular to the X direction, and then all pass through the reflective polarizing structure 60 and enter the light conversion structure 70 to excite the polarized light in the M direction , is incident on the reflective polarizing structure 60 after being reflected by the reflective mirror 80, and the polarized light X' of the X-direction component of the polarized light in the M direction enters the liquid crystal layer 30 after passing through the reflective polarizing structure 60, and then passes through the liquid crystal layer 30 The deflection of the light becomes polarized light in the Y direction, which is then absorbed by the absorbing polarizer 40 (shown by double arrows), thereby displaying a black state.
具体地，当需要采用常白模式的显示面板显示各种灰阶画面时，通过控制电压来控制液晶的偏转方向；例如，如图8所示，透过吸收型偏光片40的X方向的偏振光在穿过液晶层30后，偏振方向变为P方向；其中，P方向的偏振光中处于X方向分量的偏振光X’被反射型偏光结构60反射至液晶层30中，P方向的偏振光中处于Y方向分量的偏振光Y’透过反射型偏光结构60入射到光转换结构70中激发出Q方向的偏振光，经过反射镜80的反射而入射到反射型偏光结构60中，Q方向的偏振光中的X方向分量的偏振光X”通过反射型偏光结构60而进入到液晶层30中；经过液晶层30的偏转后，将分量偏振光X’和分量偏振光X”变为P方向的偏振光，使得P方向的偏振光中X方向分量的偏振光X”’透过吸收型偏光片40而出射，而Y方向分量的偏振光Y”’则被吸收型偏光片40吸收(如双箭头所示)；并根据不同光转换结构70受激发光的颜色不同，经过混色后形成最后的图像，实现显示的功能。Specifically, when it is necessary to use a display panel in normally white mode to display various grayscale pictures, the deflection direction of the liquid crystal is controlled by controlling the voltage; for example, as shown in FIG. After the light passes through the liquid crystal layer 30, the polarization direction changes to the P direction; wherein, the polarized light X' in the X direction component of the polarized light in the P direction is reflected by the reflective polarizing structure 60 into the liquid crystal layer 30, and the polarization in the P direction The polarized light Y' in the Y direction component of the light passes through the reflective polarizing structure 60 and enters the light conversion structure 70 to excite the polarized light in the Q direction, which is reflected by the mirror 80 and enters the reflective polarizing structure 60, Q The polarized light X" of the X-direction component of the polarized light in the X direction enters the liquid crystal layer 30 through the reflective polarizing structure 60; after being deflected by the liquid crystal layer 30, the component polarized light X' and the component polarized light X" become The polarized light in the P direction makes the polarized light X"' of the X direction component of the polarized light in the P direction pass through the absorbing polarizer 40 and emerge, while the polarized light Y"' of the Y direction component is absorbed by the absorbing polarizer 40 (as shown by double arrows); and according to the different colors of the excited light of different light conversion structures 70, the final image is formed after color mixing to realize the display function.
具体地，当本实用新型实施例提供的上述反射式液晶显示面板为常黑模式时，需要将反射型偏光结构的光反射轴与吸收型偏光片的光透过轴设置为相互垂直，具体实现常黑模式，显示白态以及各种灰阶画面的显示原理与常白模式的显示面板的显示原理类似，具体可以参考常白模式显示面板的实施例，重复之处不在赘述。Specifically, when the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention is in the normally black mode, it is necessary to set the light reflection axis of the reflective polarizer structure and the light transmission axis of the absorbing polarizer to be perpendicular to each other. The display principle of normally black mode, displaying white state and various gray scale images is similar to that of a display panel in normally white mode. For details, please refer to the embodiment of the display panel in normally white mode, and the repetition will not be repeated here.
在具体实施时，为了实现反射型偏光结构的作用，将光转换结构发出的光，经过偏振选择后进入液晶层，在本实用新型实施例提供的上述反射式液晶显示面板中，反射型偏光结构一般为金属线栅偏光结构。In specific implementation, in order to realize the effect of the reflective polarizing structure, the light emitted by the light conversion structure enters the liquid crystal layer after polarization selection. In the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, the reflective polarizing structure Generally, it is a metal wire grid polarizing structure.
具体地，位于金属线栅偏光结构面向液晶层一侧设置的像素电极，通常为透明导电材料，如ITO；且像素电极需要和阵列基板中的漏极金属电连接，以便于为像素电极提供驱动信号；然而，在图2至图5所示的结构中，因像素电极50与漏极金属102之间相隔多个膜层，且厚度较大，在制作过孔时难度较大，因此，在本实用新型实施例提供的上述反射式液晶显示面板中，金属线栅偏光结构与像素电极50电连接；通过过孔使得金属线栅偏光结构与漏极金属102电连接，不仅降低了制作难度，还有效避免了因过孔制作难度较大而引起的像素电极50与漏极金属102接触不良而影响显示效果。Specifically, the pixel electrode located on the side of the metal wire grid polarizing structure facing the liquid crystal layer is usually made of a transparent conductive material, such as ITO; and the pixel electrode needs to be electrically connected to the drain metal in the array substrate in order to provide driving for the pixel electrode. However, in the structures shown in FIGS. 2 to 5 , since the pixel electrode 50 and the drain metal 102 are separated by multiple film layers, and the thickness is relatively large, it is difficult to make a via hole. Therefore, in In the reflective liquid crystal display panel provided by the embodiment of the present invention, the metal wire grid polarizing structure is electrically connected to the pixel electrode 50; the metal wire grid polarizing structure is electrically connected to the drain metal 102 through the via hole, which not only reduces the manufacturing difficulty, It also effectively avoids poor contact between the pixel electrode 50 and the drain metal 102 caused by the difficulty in making the via hole, which would affect the display effect.
具体地，由于金属线栅偏光结构为金属材质，在本实用新型实施例提供的上述反射式液晶显示面板中，可以将金属线栅偏光结构与像素电极设置为一体结构，即将金属线栅偏光结构复用作为像素电极，如图3所示的左斜线填充区域，由金属线栅偏光结构构成的反射型偏光结构60与像素电极50为一体结构，简化了制作工艺，节约了制作成本。Specifically, since the metal wire grid polarizing structure is made of metal, in the reflective liquid crystal display panel provided by the embodiment of the present invention, the metal wire grid polarizing structure and the pixel electrode can be set as an integrated structure, that is, the metal wire grid polarizing structure Reuse as a pixel electrode, as shown in FIG. 3 , the reflective polarizing structure 60 composed of a metal wire grid polarizing structure is integrated with the pixel electrode 50 , which simplifies the manufacturing process and saves the manufacturing cost.
在具体实施时，反射镜的作用为将入射至反射镜的入射光全部反射至光转换结构，提高光的利用率，并提高反射式液晶显示面板的显示亮度；因此，在本实用新型实施例提供的上述反射式液晶显示面板中，可以如图5所示，反射镜80可以位于阵列基板10背离对向基板20的一侧；当然，还可以如图2至图4所示，反射镜80可以位于阵列基板10与光转换结构70之间。In specific implementation, the function of the reflector is to reflect all the incident light incident on the reflector to the light conversion structure, improve the utilization rate of light, and improve the display brightness of the reflective liquid crystal display panel; therefore, in the embodiment of the utility model In the above-mentioned reflective liquid crystal display panel provided, as shown in FIG. 5, the reflector 80 may be located on the side of the array substrate 10 away from the opposite substrate 20; of course, as shown in FIGS. 2 to 4, the reflector 80 may It may be located between the array substrate 10 and the light conversion structure 70 .
具体地，在本实用新型实施例提供的上述反射式液晶显示面板中，在反射镜80位于阵列基板10与光转换结构70之间时，可以如图2所示；当然，还可以如图3和图4所示，反射镜80可以与阵列基板10中的源漏极金属102同层设置，或与栅极金属101同层设置；即通过一次构图工艺就可以同时得到源漏极金属102和反射镜80，或同时得到栅极金属101和反射镜80，大大简化了制作工艺，降低了制作成本；而图2至图5中给出的阵列基板中的晶体管为底栅结构，但还可以是顶栅结构，在此不作限定。Specifically, in the reflective liquid crystal display panel provided by the embodiment of the present invention, when the reflector 80 is located between the array substrate 10 and the light conversion structure 70, it can be as shown in FIG. 2; of course, it can also be shown in FIG. 3 As shown in FIG. 4 , the reflector 80 can be arranged on the same layer as the source-drain metal 102 in the array substrate 10, or on the same layer as the gate metal 101; that is, the source-drain metal 102 and the Reflector 80, or obtain gate metal 101 and reflector 80 at the same time, greatly simplifies the manufacturing process and reduces the manufacturing cost; while the transistors in the array substrates shown in Figures 2 to 5 are bottom gate structures, but they can also is a top-gate structure, which is not limited here.
在具体实施时，因像素电极与光转换结构是一一对应的，在图9所示中只示出了光转换结构70，一般地，将每个像素电极对应的像素单元称为子像素单元，每三个子像素单元组成一个像素，即每三个光转换结构70组成一个像素m，如图9所示，当然，并不限于三个；因此，每个光转换结构70用于将入射光转换为与像素电极所在的像素单元对应颜色的光，例如，当一个像素包括的三个子像素分别发红光R、绿光G和蓝光B时，三个光转换结构70分别将入射光转换为红光R，绿光G和蓝光B；因此，为了实现光转换结构能够将入射光转换为与像素电极所在的像素单元对应颜色的光，以提高光的利用率。光转换结构材料的选择与光的波长范围有关。下面就对光转换结构的选材进行具体描述。In actual implementation, since the pixel electrodes correspond to the light conversion structures one by one, only the light conversion structure 70 is shown in FIG. 9 . Generally, the pixel unit corresponding to each pixel electrode is called a sub-pixel unit. , every three sub-pixel units form a pixel, that is, every three light conversion structures 70 form a pixel m, as shown in FIG. 9 , of course, it is not limited to three; therefore, each light conversion structure 70 is used to converted into light of the color corresponding to the pixel unit where the pixel electrode is located. For example, when three sub-pixels included in a pixel respectively emit red light R, green light G and blue light B, the three light conversion structures 70 respectively convert the incident light into Red light R, green light G and blue light B; therefore, in order to realize the light conversion structure, the incident light can be converted into light of the color corresponding to the pixel unit where the pixel electrode is located, so as to improve the utilization rate of light. The choice of light-converting structural materials is related to the wavelength range of light. The material selection of the light conversion structure will be described in detail below.
具体地，在本实用新型实施例提供的上述反射式液晶显示面板中，当与像素电极所在的像素单元对应颜色的光为可见光波段内的低频光时，光转换结构一般包括用于将可见光波段内的高频光和中频光转换为低频光的下转换材料。具体地，下转换材料可以包括：无机发光材料和有机发光材料之一或组合，例如可以是量子点材料和荧光材料等。其中有机发光材料可以有机小分子发光材料也可以为有机高分子聚合物发光材料，在此不做限定。并且，当选择多种下转换材料作为光转换结构时，可以将各材料分膜层设置，且各膜层可以相邻也可以间隔设置，也可以将各材料混合在同一膜层，在此不做限定。Specifically, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present utility model, when the light of the color corresponding to the pixel unit where the pixel electrode is located is low-frequency light in the visible light band, the light conversion structure generally includes a A down-conversion material that converts high-frequency light and intermediate-frequency light into low-frequency light. Specifically, the down-conversion material may include: one or a combination of inorganic light-emitting materials and organic light-emitting materials, such as quantum dot materials and fluorescent materials. The organic luminescent material may be an organic small molecule luminescent material or an organic high molecular polymer luminescent material, which is not limited here. Moreover, when multiple down-converting materials are selected as the light conversion structure, each material can be arranged in separate layers, and each layer can be adjacent to each other or arranged at intervals, or the materials can be mixed in the same layer, which is not mentioned here. Do limited.
例如，与像素电极所在的像素单元对应颜色的光为红光时，光转换结构的材料为用于将蓝光和绿光转换为红光的下转换材料。具体地，下转换材料可以选择红色量子点，红色荧光材料等红色发光材料，在此不做限定。For example, when the light of the color corresponding to the pixel unit where the pixel electrode is located is red light, the material of the light conversion structure is a down conversion material for converting blue light and green light into red light. Specifically, red quantum dots, red fluorescent materials and other red light-emitting materials can be selected as the down-conversion material, which is not limited here.
具体地，在本实用新型实施例提供的上述反射式液晶显示面板中，当与像素电极所在的像素单元对应颜色的光为可见光波段内的高频光时，光转换结构一般包括用于将可见光波段内的低频光和中频光转换为高频光的上转换材料。具体地，上转换材料可以包括：掺杂稀土离子的无机化合物。例如，根据所需转换的高频光，可以在氟化物、氧化物、含硫化合物、氟氧化物、卤化物等无机化合物内掺杂相应浓度和比例的一种或多种稀土离子。例如可以选择目前上转换发光效率最高NaYF4作为基质材料，掺杂Yb:Tm:Er＝18～60:0～0.2:0～2。并且，当选择多种上转换材料作为光转换结构时，可以将各材料分膜层设置，且各膜层可以相邻也可以间隔设置，也可以将各材料混合在同一膜层，在此不做限定。Specifically, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, when the light of the color corresponding to the pixel unit where the pixel electrode is located is high-frequency light in the visible light band, the light conversion structure generally includes a An up-conversion material that converts low-frequency light and medium-frequency light into high-frequency light. Specifically, the up-conversion material may include: an inorganic compound doped with rare earth ions. For example, according to the high-frequency light to be converted, one or more rare earth ions of corresponding concentration and proportion can be doped in inorganic compounds such as fluorides, oxides, sulfur-containing compounds, oxyfluorides, and halides. For example, NaYF4 with the highest up-conversion luminous efficiency can be selected as the host material, doped with Yb:Tm:Er=18~60:0~0.2:0~2. Moreover, when multiple up-conversion materials are selected as the light conversion structure, each material can be arranged in separate layers, and the layers can be adjacent to each other or arranged at intervals, or the materials can be mixed in the same layer, which is not mentioned here. Do limited.
例如，与像素电极所在的像素单元对应颜色的光为蓝光时，光转换结构的材料为用于将红光和绿光转换为蓝光的上转换材料。具体地，上转换材料可以选择基质材料即无机化合物为NaYF4，掺杂Yb:Tm:Er＝20:0.2:0～0.5的材料。For example, when the light of the color corresponding to the pixel unit where the pixel electrode is located is blue light, the material of the light conversion structure is an up-conversion material for converting red light and green light into blue light. Specifically, as the up-conversion material, the host material, that is, the inorganic compound is NaYF4, and a material doped with Yb:Tm:Er=20:0.2:0˜0.5 can be selected.
具体地，在本实用新型实施例提供的上述反射式液晶显示面板中，当与像素电极所在的像素单元对应颜色的光为可见光波段内的中频光时，光转换结构一般包括用于将可见光波段内的低频光转换为中频光的上转换材料，和/或用于将可见光波段内的高频光转换为中频光的下转换材料。并且，为了最大限度的提高光利用率，光转换结构较佳地需要同时包括上转换材料和下转换材料。具体地，下转换材料可以包括：无机发光材料和有机发光材料之一或组合，例如可以是量子点材料和荧光材料等。其中有机发光材料可以有机小分子发光材料也可以为有机高分子聚合物发光材料，在此不做限定。具体地，上转换材料可以包括：掺杂稀土离子的无机化合物。例如，根据所需转换的高频光，可以在氟化物、氧化物、含硫化合物、氟氧化物、卤化物等无机化合物内掺杂相应浓度和比例的一种或多种稀土离子。例如可以选择目前上转换发光效率最高NaYF4作为基质材料，掺杂Yb:Tm:Er＝18～60:0～0.2:0～2。并且，当选择多种上转换材料作为光转换结构时，可以将各材料分膜层设置，且各膜层可以相邻也可以间隔设置，也可以将各材料混合在同一膜层，在此不做限定。Specifically, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, when the light of the color corresponding to the pixel unit where the pixel electrode is located is intermediate frequency light in the visible light band, the light conversion structure generally includes a An up-conversion material for converting low-frequency light in the visible light band to intermediate-frequency light, and/or a down-conversion material for converting high-frequency light in the visible light band to intermediate-frequency light. Moreover, in order to maximize light utilization efficiency, the light conversion structure preferably needs to include both up-conversion materials and down-conversion materials. Specifically, the down-conversion material may include: one or a combination of inorganic light-emitting materials and organic light-emitting materials, such as quantum dot materials and fluorescent materials. The organic luminescent material may be an organic small molecule luminescent material or an organic high molecular polymer luminescent material, which is not limited here. Specifically, the up-conversion material may include: an inorganic compound doped with rare earth ions. For example, according to the high-frequency light to be converted, one or more rare earth ions of corresponding concentration and proportion can be doped in inorganic compounds such as fluorides, oxides, sulfur-containing compounds, oxyfluorides, and halides. For example, NaYF4 with the highest up-conversion luminous efficiency can be selected as the host material, doped with Yb:Tm:Er=18~60:0~0.2:0~2. Moreover, when multiple up-conversion materials are selected as the light conversion structure, each material can be arranged in separate layers, and the layers can be adjacent to each other or arranged at intervals, or the materials can be mixed in the same layer, which is not mentioned here. Do limited.
例如，与像素电极所在的像素单元对应颜色的光为绿光时，光转换结构的材料可以同时包括用于将红光转换为绿光的上转换材料和用于将蓝光转换为绿光的下转换材料。具体地，下转换材料可以选择绿色量子点，绿色荧光材料等绿色有机发光材料，在此不做限定。具体地，上转换材料可以选择基质材料即无机化合物为NaYF4，掺杂Yb:Tm:Er＝18～25:0:2的材料。For example, when the light of the color corresponding to the pixel unit where the pixel electrode is located is green light, the material of the light conversion structure may simultaneously include an up-conversion material for converting red light into green light and a down-conversion material for converting blue light into green light. Convert material. Specifically, the down-converting material can be selected from green organic light-emitting materials such as green quantum dots and green fluorescent materials, which are not limited herein. Specifically, as the up-conversion material, the host material, that is, the inorganic compound is NaYF4, and a material doped with Yb:Tm:Er=18˜25:0:2 can be selected.
具体地，由于下转换材料的转换效率一般高于上转换材料的转换效率，因此，在本实用新型实施例提供的上述反射式液晶显示面板中，在如图9所示的一个像素内，为了能够得到白色光，需要满足：蓝光对应的光转换结构(竖线填充区域)70的面积大于绿光对应的光转换结构(白色填充区域)70的面积大于红光对应的光转换结构(横线填充区域)70的面积；并且，具体的面积比例大小，需要根据实际的混光比例进行设置，在此不作限定。Specifically, since the conversion efficiency of the down-conversion material is generally higher than that of the up-conversion material, in the above-mentioned reflective liquid crystal display panel provided by the embodiment of the present invention, in one pixel as shown in FIG. 9 , for To be able to obtain white light, it needs to be satisfied: the area of the light conversion structure (vertical line filled area) 70 corresponding to blue light is larger than the area of the light conversion structure (white filled area) 70 corresponding to green light is larger than the area of the light conversion structure (horizontal line) corresponding to red light area) 70; and, the specific area ratio needs to be set according to the actual light mixing ratio, which is not limited here.
基于同一实用新型构思，本实用新型实施例还提供了一种显示装置，包括：如本实用新型实施例提供的上述反射式液晶显示面板。该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述反射式液晶显示面板的实施例，重复之处不再赘述。Based on the same concept of the utility model, an embodiment of the utility model also provides a display device, including: the above-mentioned reflective liquid crystal display panel as provided in the embodiment of the utility model. The display device may be any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like. For the implementation of the display device, reference may be made to the above-mentioned embodiments of the reflective liquid crystal display panel, and repeated descriptions will not be repeated.
本实用新型实施例提供了一种反射式液晶显示面板及显示装置，包括：相对而置的阵列基板和对向基板，位于对向基板与阵列基板之间的液晶层，位于对向基板背离液晶层一侧的吸收型偏光片，位于阵列基板面向液晶层一侧的多个像素电极，位于像素电极与阵列基板之间的反射型偏光结构，位于反射型偏光结构背离像素电极一侧的多个光转换结构，以及位于光转换结构背离反射型偏光结构一侧的反射镜；像素电极与光转换结构一一对应；光转换结构，用于将入射光转换为与像素电极所在的像素单元对应颜色的光；反射型偏光结构的光反射轴与吸收型偏光片的光透过轴相互平行或垂直。因此，通过光转换结构的设置，可以将入射光转换为与像素电极所在的像素单元对应颜色的光，与现有技术中只反射特定波长的光而发光的结构相比，大大增加了光的利用率；并且，结合反射型偏光结构的设置，将光转换结构发出的光，通过反射型偏光结构的偏振选择后进入液晶层，有效避免了因光转换结构引起的光偏振状态改变而导致的画面不能正常显示的问题，不仅保证了显示面板的正常显示，还提高了显示画面的质量。Embodiments of the present invention provide a reflective liquid crystal display panel and a display device, comprising: an array substrate and an opposing substrate facing each other, a liquid crystal layer located between the opposing substrate and the array substrate, and a liquid crystal layer located between the opposing substrate and away from the liquid crystal layer. Absorptive polarizer on one side of the layer, multiple pixel electrodes located on the side of the array substrate facing the liquid crystal layer, reflective polarizing structures located between the pixel electrodes and the array substrate, multiple pixel electrodes located on the side of the reflective polarizing structure away from the pixel electrodes A light conversion structure, and a mirror located on the side of the light conversion structure away from the reflective polarizing structure; the pixel electrodes correspond to the light conversion structure one by one; the light conversion structure is used to convert incident light into a color corresponding to the pixel unit where the pixel electrode is located The light; the light reflection axis of the reflective polarizer structure and the light transmission axis of the absorbing polarizer are parallel or perpendicular to each other. Therefore, through the arrangement of the light conversion structure, the incident light can be converted into light of the color corresponding to the pixel unit where the pixel electrode is located. Compared with the structure in the prior art that only reflects light of a specific wavelength and emits light, the intensity of light is greatly increased. Utilization rate; and, combined with the setting of the reflective polarizing structure, the light emitted by the light conversion structure enters the liquid crystal layer through the polarization selection of the reflective polarizing structure, effectively avoiding the change of the light polarization state caused by the light conversion structure. The problem that the picture cannot be displayed normally not only ensures the normal display of the display panel, but also improves the quality of the displayed picture.
显然，本领域的技术人员可以对本实用新型进行各种改动和变型而不脱离本实用新型的精神和范围。这样，倘若本实用新型的这些修改和变型属于本实用新型权利要求及其等同技术的范围之内，则本实用新型也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720704360.9UCN206892500U (en) | 2017-06-16 | 2017-06-16 | A kind of reflecting type liquid crystal display panel and display device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720704360.9UCN206892500U (en) | 2017-06-16 | 2017-06-16 | A kind of reflecting type liquid crystal display panel and display device |
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| CN206892500Utrue CN206892500U (en) | 2018-01-16 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201720704360.9UWithdrawn - After IssueCN206892500U (en) | 2017-06-16 | 2017-06-16 | A kind of reflecting type liquid crystal display panel and display device |
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