技术领域technical field
本发明涉及一种电子纸显示屏的照明技术，尤其是一种导光板、前光照明装置及电子纸显示屏。The invention relates to an illumination technology of an electronic paper display screen, in particular to a light guide plate, a front lighting device and an electronic paper display screen.
背景技术Background technique
背光光源一般设有支撑框架，基本不会出现LED灯位置偏离的问题。但由于电子纸显示屏属于反射型显示屏，需要将光源设置于显示屏的前方，即为前光光源。在电子纸显示屏的前光应用中，为了减少厚度和重量，一般不方便采用支撑框架，且前光光源一般设置成柔软的灯条。The backlight light source is generally equipped with a supporting frame, and there is basically no problem of deviation of the position of the LED light. However, since the electronic paper display is a reflective display, the light source needs to be arranged in front of the display, that is, the front light source. In the front light application of the electronic paper display, in order to reduce the thickness and weight, it is generally inconvenient to use a support frame, and the front light source is generally set as a soft light bar.
参考图1至图4，图1为现有技术中具有前光照明装置的电子纸显示屏的结构示意图；图2为图1中所示灯条的结构示意图；图3为图1中所示LED灯与导光板的结构关系示意图。所述电子纸显示屏包括电子纸显示模组10”、设置于该电子纸显示模组10”显示面上的导光板30”、设置于该电子纸显示模组10”与导光板30”之间的粘黏剂层20”、通过粘黏剂40”粘附于所述导光板30”上的灯条。所述灯条包括柔性电路板FPC50”和设置于柔性电路板FPC50”上的侧出光LED灯60”。所述柔性电路板FPC50”一端通过粘黏剂40”粘附于所述导光板30”上，另一端用于安装侧出光LED灯60”。所述LED灯60”焊接在柔性电路板FPC50”上，其出光对准导光板30”的入光侧面。由于没有使用支撑物来支撑柔性电路板FPC50”和LED灯60”。LED灯60”就靠柔性电路板FPC50”的一边搭在导光板30”上，这样LED灯60”悬空在导光板30”的边缘。Referring to Figures 1 to 4, Figure 1 is a schematic structural view of an electronic paper display screen with a front lighting device in the prior art; Figure 2 is a schematic structural view of the light bar shown in Figure 1; Figure 3 is a schematic structural view of the light bar shown in Figure 1; Schematic diagram of the structural relationship between the LED lamp and the light guide plate. The electronic paper display screen includes an electronic paper display module 10", a light guide plate 30" disposed on the display surface of the electronic paper display module 10", and a light guide plate 30" disposed between the electronic paper display module 10" and the light guide plate 30". The adhesive layer 20 ″ between them, and the light bar adhered to the light guide plate 30 ″ through the adhesive 40 ″. The light bar includes a flexible circuit board FPC50" and a side-emitting LED lamp 60" disposed on the flexible circuit board FPC50". One end of the flexible circuit board FPC50" is adhered to the light guide plate 30" by an adhesive 40". The other end is used to install the side-emitting LED lamp 60". The LED lamp 60" is welded on the flexible circuit board FPC50", and its light is aimed at the light incident side of the light guide plate 30". Since no support is used to support the flexible circuit board FPC50" and the LED lamp 60". The LED lamp 60" is placed on the light guide plate 30" by one side of the flexible circuit board FPC50", so that the LED lamp 60" is suspended on the edge of the light guide plate 30".
由于柔性电路板FPC50”是柔性的，支撑力度不足，加之LED灯60”与导光板30”具有相对较大的活动范围，导致LED灯60”等难以安装到位。即使安装到位，也很容易因碰压改变LED灯60”的位置，使LED灯60”歪斜、翘起，如图4所示。所述LED灯60”的歪斜、翘起会导致LED灯60”出光没有对准导光板30”的入光侧面，LED灯60”的部分光线没有进入导光板，这样造成光能损失，光强减弱，前光亮度减少。如果灯条是多个LED灯组成，其中某个LED灯出现这样的问题，该部位导光板还会出现暗斑或色斑，整个前光亮度或色度不均匀，影响阅读效果。Since the flexible circuit board FPC50" is flexible, the supporting strength is insufficient, and the LED lamp 60" and the light guide plate 30" have a relatively large range of motion, which makes it difficult to install the LED lamp 60" in place. Even if it is installed in place, it is easy to change the position of the LED lamp 60" due to bumping and pressure, so that the LED lamp 60" is skewed and tilted, as shown in Figure 4. The inclination and tilting of the LED lamp 60" will cause the light emitted by the LED lamp 60" to not be aligned with the light incident side of the light guide plate 30", and part of the light from the LED lamp 60" will not enter the light guide plate, resulting in loss of light energy and light intensity. weakened, the brightness of the front light decreases. If the light bar is composed of multiple LED lights, if such a problem occurs in one of the LED lights, dark spots or color spots will appear on the light guide plate in this part, and the brightness or chromaticity of the entire front light will be uneven, which will affect the reading effect.
发明内容Contents of the invention
针对现有技术的不足，本发明的目的之一是提供一种导光板，其导光效果更好，且能够使电子纸显示屏的前光照明效果更好、更稳定。In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide a light guide plate with better light guide effect and better and more stable front light illumination effect of the electronic paper display screen.
本发明的目的之二是提供一种前光照明装置，其照明效果更好，更稳定。The second object of the present invention is to provide a front lighting device with better and more stable lighting effect.
本发明的目的之三是提供一种电子纸显示屏，其前光照明效果更好，更加稳定。The third object of the present invention is to provide an electronic paper display screen, which has a better front lighting effect and is more stable.
为达到上述目的之一，本发明提供一种导光板，其用于贴附于电泳显示模组显示面的上方，其包括导光板主体，该导光板主体伸入LED灯区域，该导光板主体上设置有用于容置LED灯的凹槽。In order to achieve one of the above objectives, the present invention provides a light guide plate, which is used to be attached above the display surface of the electrophoretic display module, which includes a light guide plate main body, the light guide plate main body extends into the LED lamp area, and the light guide plate main body There are grooves for accommodating LED lights.
所述电泳显示模组其包括微胶囊电泳显示模组或微杯电泳显示模组。The electrophoretic display module includes a microcapsule electrophoretic display module or a microcup electrophoretic display module.
作为本发明一种导光板在一方面的改进，所述凹槽贯穿所述导光板的上下面。As an improvement in one aspect of the light guide plate of the present invention, the groove runs through the upper and lower sides of the light guide plate.
作为本发明一种导光板在一方面的改进，所述凹槽的形状、大小与LED灯的形状、大小相适配。As an improvement in one aspect of the light guide plate of the present invention, the shape and size of the groove are adapted to the shape and size of the LED lamp.
为达到上述目的之二，本发明还提供一种前光照明装置，其包括导光板、设于该导光板上的驱动电路板、与该驱动电路板相连的LED灯，所述导光板为上述任意一项所述的导光板，所述LED灯容置于该导光板的凹槽中。To achieve the second objective above, the present invention also provides a front lighting device, which includes a light guide plate, a drive circuit board arranged on the light guide plate, and an LED lamp connected to the drive circuit board. The light guide plate is the above-mentioned According to any one of the light guide plates, the LED lamp is accommodated in the groove of the light guide plate.
上述所述驱动电路板设于该导光板上是指所述驱动电路板可位于导光板的上下任意一面。The aforesaid drive circuit board being arranged on the light guide plate means that the drive circuit board can be located on any side of the light guide plate.
作为本发明一种前光照明装置在一方面的改进，所述LED灯呈长条形状。As an improvement in one aspect of the front lighting device of the present invention, the LED lamp is in the shape of a strip.
作为本发明一种前光照明装置在一方面的改进，所述LED灯灯头顶部与所述凹槽的槽口相平齐。As an improvement in one aspect of the front lighting device of the present invention, the top of the LED lamp cap is flush with the notch of the groove.
作为本发明一种前光照明装置在一方面的改进，所述导光板与驱动电路板之间设置有胶黏剂层。As an improvement in one aspect of the front lighting device of the present invention, an adhesive layer is arranged between the light guide plate and the driving circuit board.
作为本发明一种前光照明装置在一方面的改进，所述导光板与电泳显示模组之间设置有光学胶层。As an improvement in one aspect of the front lighting device of the present invention, an optical glue layer is arranged between the light guide plate and the electrophoretic display module.
为达到上述目的之三，本发明还提供一种电子纸显示屏，其包括电泳显示模组、设置于该电泳显示模组上的前光照明装置，所述前光照明装置为上述任意一项所述的前光照明装置。In order to achieve the third purpose above, the present invention also provides an electronic paper display screen, which includes an electrophoretic display module and a front lighting device arranged on the electrophoretic display module, and the front lighting device is any one of the above The front light lighting device.
作为本发明一种电子纸显示屏在一方面的改进，所述电泳显示模组依次包括基板层、微胶囊电泳显示层以及透明保护膜层。As an improvement in one aspect of the electronic paper display screen of the present invention, the electrophoretic display module sequentially includes a substrate layer, a microcapsule electrophoretic display layer and a transparent protective film layer.
作为本发明一种电子纸显示屏在一方面的改进，所述导光板的上方或下方还设置有触摸屏模组。As an improvement in one aspect of the electronic paper display screen of the present invention, a touch screen module is further arranged above or below the light guide plate.
与现有技术相比较，本发明导光板、前光照明装置及电子纸显示屏，通过在导光板上开设凹槽，并将导光板伸入LED灯区域，使LED灯被包容于所述凹槽中，从而避免LED灯等受到挤压、磕碰而发生位置偏移，影响前光照明装置照明的稳定性及效果；另外由于导光板伸入了LED灯区域，所述驱动电路板能够通过导光板进行支撑，避免因驱动电路板翘起等原因导致LED灯的位置发生偏移；再者，导光板伸入了LED灯区域，有效降低LED灯漏光的现象。因此本发明具有照明效果好、稳定性高的有益效果。Compared with the prior art, the light guide plate, the front lighting device and the electronic paper display screen of the present invention open grooves on the light guide plate and extend the light guide plate into the area of the LED lamp so that the LED lamp is contained in the recess. slot, so as to prevent the LED lamps from being squeezed and knocked, which will affect the stability and effect of the lighting of the front lighting device; in addition, because the light guide plate extends into the LED lamp area, the driving circuit board can pass through the guide The light plate is supported to avoid the position shift of the LED light due to the tilt of the driving circuit board and other reasons; moreover, the light guide plate extends into the area of the LED light, effectively reducing the phenomenon of light leakage of the LED light. Therefore, the present invention has the beneficial effects of good lighting effect and high stability.
附图说明Description of drawings
图1为现有技术中具有前光照明装置的电子纸显示屏的结构示意图。FIG. 1 is a schematic structural diagram of an electronic paper display screen with a front lighting device in the prior art.
图2为图1中所示灯条的结构示意图。FIG. 2 is a schematic structural diagram of the light bar shown in FIG. 1 .
图3为图1中所示LED灯与导光板的结构关系示意图。FIG. 3 is a schematic diagram of the structural relationship between the LED lamp shown in FIG. 1 and the light guide plate.
图4为图1中所述LED灯位置偏移的结构示意图。FIG. 4 is a structural schematic diagram of the positional displacement of the LED lamp in FIG. 1 .
图5为本发明具有前光照明装置的电子纸显示屏在一个优选实施例中的结构示意图。FIG. 5 is a schematic structural view of an electronic paper display screen with a front lighting device in a preferred embodiment of the present invention.
图6为图5中A-A向截面示意图。Fig. 6 is a schematic cross-sectional view along A-A in Fig. 5 .
图7为图5中所示灯条与导光板的位置关系示意图。FIG. 7 is a schematic diagram of the positional relationship between the light bar and the light guide plate shown in FIG. 5 .
图8为图5中所示LED灯与导光板的位置关系示意图。FIG. 8 is a schematic diagram of the positional relationship between the LED lamp and the light guide plate shown in FIG. 5 .
图9为图5中所示灯条的结构示意图。FIG. 9 is a schematic structural diagram of the light bar shown in FIG. 5 .
图10为图9中所示LED灯的结构示意图。FIG. 10 is a schematic structural diagram of the LED lamp shown in FIG. 9 .
图11为图5中所示电泳显示模组在一个优选实施例中的结构示意图。FIG. 11 is a schematic structural diagram of a preferred embodiment of the electrophoretic display module shown in FIG. 5 .
图12为本发明具有前光照明装置的电子纸显示屏在另一个优选实施了中的结构示意图。FIG. 12 is a schematic structural diagram of another preferred implementation of the electronic paper display screen with a front lighting device according to the present invention.
图13为本发明具有前光照明装置的电子纸显示屏在又一个优选实施了中的结构示意图。FIG. 13 is a schematic structural diagram of another preferred implementation of the electronic paper display screen with a front lighting device according to the present invention.
10：电泳显示模组； 11：基板层10: Electrophoretic display module; 11: Substrate layer
12：微胶囊电泳显示层 13：透明保护膜层12: Microcapsule electrophoretic display layer 13: Transparent protective film layer
20：光学胶层； 30：导光板；20: optical adhesive layer; 30: light guide plate;
31：凹槽； 32：凹槽槽边；31: Groove; 32: Groove edge;
40：胶黏剂层； 50：驱动电路板；40: adhesive layer; 50: drive circuit board;
60：LED灯； 61：灯壳；60: LED lamp; 61: Lamp housing;
62：灯芯； 70：触摸屏模组；62: wick; 70: touch screen module;
100：LED灯区域。100: LED light area.
本发明目的的实现、功能特点及优异效果，将在下面结合具体实施例以及附图做进一步的说明。The realization of the purpose of the present invention, functional characteristics and excellent effects will be further described below in conjunction with specific embodiments and accompanying drawings.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明所述技术方案作进一步的详细描述，以使本领域的技术人员可以更好的理解本发明并能予以实施，但所举实施例不作为对本发明的限定。The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention .
提供一种导光板，其用于贴附于电泳显示模组的显示面上方，其包括导光板主体，该导光板主体伸入LED灯区域，该导光板主体上设置有用于容置LED灯的凹槽。Provided is a light guide plate, which is used to be pasted on the display surface of an electrophoretic display module. groove.
作为一种导光板在上述实施例的改进，所述凹槽贯穿所述导光板的上下面。As an improvement of the above embodiment of the light guide plate, the groove runs through the upper and lower sides of the light guide plate.
作为一种导光板在上述任意一实施例上的改进，所述凹槽的形状、大小与LED灯的形状、大小相适配。As an improvement on any one of the above-mentioned embodiments of the light guide plate, the shape and size of the groove are adapted to the shape and size of the LED lamp.
提供一种前光照明装置，其包括导光板、用于贴附于该导光板上的驱动电路板、与该驱动电路板相连的LED灯，所述导光板为上述任意一项所述的导光板，所述LED灯容置于该导光板的凹槽中。A front lighting device is provided, which includes a light guide plate, a driving circuit board attached to the light guide plate, and an LED lamp connected to the driving circuit board, and the light guide plate is any one of the above-mentioned The light plate, the LED lamp is accommodated in the groove of the light guide plate.
作为一种前光照明装置在上述任意一实施例上的改进，所述LED灯呈长条形状。As an improvement on any one of the above embodiments of the front lighting device, the LED lamp is in the shape of a strip.
作为一种前光照明装置在上述任意一实施例上的改进，所述导光板与驱动电路板之间设置有胶黏剂层。As an improvement on any one of the above-mentioned embodiments of the front lighting device, an adhesive layer is arranged between the light guide plate and the driving circuit board.
作为一种前光照明装置在上述任意一实施例上的改进，所述导光板与电泳显示模组之间设置有光学胶层。As an improvement on any one of the above-mentioned embodiments of the front lighting device, an optical glue layer is arranged between the light guide plate and the electrophoretic display module.
提供一种电子纸显示屏，其包括电泳显示模组、设置于该电泳显示模组上的前光照明装置，所述前光照明装置为上述任意一项所述的前光照明装置。An electronic paper display screen is provided, which includes an electrophoretic display module, and a front lighting device arranged on the electrophoretic display module, and the front lighting device is the front lighting device described in any one of the above.
作为一种电子纸显示屏在上述实施例中的改进，所述电泳显示模组依次包括基板层、微胶囊电泳显示层以及透明保护膜层。As an improvement of the electronic paper display screen in the above embodiment, the electrophoretic display module sequentially includes a substrate layer, a microcapsule electrophoretic display layer and a transparent protective film layer.
作为一种电子纸显示屏在上述任意一实施例上的改进，所述导光板的上方或下方还设置有触摸屏模组。As an improvement on any one of the above-mentioned embodiments of the electronic paper display screen, a touch screen module is further arranged above or below the light guide plate.
提供一种电子纸显示屏，参见图5-10，图5为本发明具有前光照明装置的电子纸显示屏在一个优选实施了中的结构示意图；图6为图5中所示A-A向截面示意图；图7为图5中所示灯条与导光板的位置关系示意图；图8为图5中所示LED灯与导光板的位置关系示意图。所述电子纸显示屏包括电泳显示模组10、设置于该电泳显示模组10上的前光照明装置。所述前光照明装置包括用于设置在电泳显示模组10显示面上方的导光板30，用于贴附于该导光板30上的灯条。所述灯条包括驱动电路板50，与该驱动电路板50相连的LED灯60。所述导光板30与驱动电路板50之间设置有胶黏剂层40。所述导光板30与电泳显示模组10显示面之间设置有光学胶层20。An electronic paper display screen is provided, see Figures 5-10, Figure 5 is a schematic structural view of an electronic paper display screen with a front lighting device in a preferred implementation of the present invention; Figure 6 is an A-A cross section shown in Figure 5 Schematic diagram; FIG. 7 is a schematic diagram of the positional relationship between the light bar and the light guide plate shown in FIG. 5 ; FIG. 8 is a schematic diagram of the positional relationship between the LED lamp and the light guide plate shown in FIG. 5 . The electronic paper display screen includes an electrophoretic display module 10 and a front lighting device arranged on the electrophoretic display module 10 . The front lighting device includes a light guide plate 30 arranged above the display surface of the electrophoretic display module 10 , and a light bar attached to the light guide plate 30 . The light bar includes a driving circuit board 50 and an LED lamp 60 connected to the driving circuit board 50 . An adhesive layer 40 is disposed between the light guide plate 30 and the driving circuit board 50 . An optical glue layer 20 is disposed between the light guide plate 30 and the display surface of the electrophoretic display module 10 .
所述电泳显示模组10可以是微胶囊式电泳显示模组、微杯式电泳显示模组等反射型显示模组。以微胶囊电泳显示模组为例，如图11，该微胶囊电泳显示模组依次包括基板层11、微胶囊电泳显示层12、透明保护膜层13。所述微胶囊电泳显示层为固态电泳显示层。所述基板层可以为TFT玻璃基板层。所述微胶囊电泳显示层12中包裹有电泳液、带正电荷或负电荷的颜料粒子以及中性颜料粒子。在驱动电压的驱动下，带电的颜料粒子在微胶囊中移动进行显示。当然在其他实施例中，所述微胶囊电泳显示层12中包裹有电泳液、带正电荷的颜料粒子和带负电荷的颜料粒子，在驱动电压的驱动下，带电的颜料粒子在微胶囊中移动进行显示。The electrophoretic display module 10 may be a reflective display module such as a microcapsule electrophoretic display module or a microcup electrophoretic display module. Taking the microcapsule electrophoretic display module as an example, as shown in FIG. 11 , the microcapsule electrophoretic display module includes a substrate layer 11 , a microcapsule electrophoretic display layer 12 , and a transparent protective film layer 13 in sequence. The microcapsule electrophoretic display layer is a solid-state electrophoretic display layer. The substrate layer may be a TFT glass substrate layer. The microcapsule electrophoretic display layer 12 is wrapped with electrophoretic liquid, positively or negatively charged pigment particles and neutral pigment particles. Driven by the driving voltage, the charged pigment particles move in the microcapsules for display. Of course, in other embodiments, the electrophoretic liquid, positively charged pigment particles and negatively charged pigment particles are wrapped in the microcapsule electrophoretic display layer 12, and the charged pigment particles move in the microcapsules under the driving voltage. to display.
所述光学胶层20用于胶结导光板30与电泳显示模组10。该光学胶层20所采用的光学胶要求具有无色透明、光透过率在90%以上、胶结强度良好，可在室温或中温下固化，且有固化收缩小等特点。有机硅橡胶、丙烯酸型树脂及不饱和聚酯、聚氨酯、环氧树脂等胶粘剂都可胶结光学元件。在配制时通常要加入一些处理剂，以改进其光学性能或降低固化收缩率。The optical adhesive layer 20 is used for bonding the light guide plate 30 and the electrophoretic display module 10 . The optical adhesive used in the optical adhesive layer 20 is required to be colorless and transparent, have a light transmittance of over 90%, good bonding strength, can be cured at room temperature or medium temperature, and have the characteristics of small curing shrinkage. Adhesives such as silicone rubber, acrylic resin, and unsaturated polyester, polyurethane, and epoxy resin can be used to bond optical components. Some treatment agents are usually added during formulation to improve its optical properties or reduce curing shrinkage.
所述导光板30是光学级的亚克力PMMA/PC板材。可以用高折射率的材料，在光学级的亚克力PMMA/PC板材的表面用UV网版印刷技术印上导光点。也可以通过注塑机一次射出成型，制造出带有凹或凸导光点的导光板30。从灯发出来的光进入导光板30内部，在导光板两面之间全反射传递到远端，当光线射到各个导光点时，会破坏全反射条件由导光板表面射出。通过各种疏密、大小不一的导光点设计，可使导光板均匀发光。The light guide plate 30 is an optical grade acrylic PMMA/PC plate. Materials with high refractive index can be used to print light guide points on the surface of optical grade acrylic PMMA/PC sheet with UV screen printing technology. The light guide plate 30 with concave or convex light guide points can also be manufactured by one-time injection molding with an injection molding machine. The light emitted from the lamp enters the inside of the light guide plate 30, and is transmitted to the far end through total reflection between the two sides of the light guide plate. Through the design of light guide points of various densities and sizes, the light guide plate can be evenly illuminated.
所述胶黏剂层40用于粘接所述导光板30与驱动电路板50。The adhesive layer 40 is used for bonding the light guide plate 30 and the driving circuit board 50 .
所述驱动电路板50为柔性印刷电路板，用于驱动LED灯。该驱动电路板50通过胶黏剂层40粘附于所述导光板30上，其上焊接有多个LED灯60。多个LED灯60成线型规则排列于所述驱动电路板50上。The driving circuit board 50 is a flexible printed circuit board for driving LED lights. The driving circuit board 50 is adhered to the light guide plate 30 through an adhesive layer 40 , and a plurality of LED lamps 60 are welded thereon. A plurality of LED lamps 60 are regularly arranged in a line on the driving circuit board 50 .
参考图7-8，所述导光板30用于贴附于电泳显示模组10显示面的上方，其包括导光板主体，该导光板主体通过加长延伸伸入LED灯区域100，所述LED灯区域100是指LED灯所处位置及其相邻的一个区域，例如图8中所示虚线区域，在具有两个或两个以上的LED灯时，该LED灯区域100还应当包括LED灯之间的区域。所述导光板主体上设置有用于容置LED灯60的凹槽31，所述LED灯容置于该导光板30的凹槽31中，这样导光板主体通过这种形式伸入LED灯区域100中。所述LED灯被包容于所述凹槽31中，这样可以避免LED灯60受到挤压、磕碰，从而定位LED灯60的位置避免发生位置偏移的现象；另外由于导光板30伸入了LED灯区域100，所述驱动电路板50能够通过导光板30的凹槽槽边32进行支撑，避免因驱动电路板50翘起等原因导致LED灯的位置发生偏移；再者，导光板30伸入了LED灯区域100，有效降低LED灯60漏光的现象。因此本发明具有照明效果好、稳定性高的有益效果。Referring to Figures 7-8, the light guide plate 30 is used to be attached to the top of the display surface of the electrophoretic display module 10, which includes a light guide plate main body, and the light guide plate main body extends into the LED lamp area 100 through extension, and the LED lamp The area 100 refers to the location of the LED lamp and an area adjacent to it, such as the dotted line area shown in Figure 8. When there are two or more LED lamps, the LED lamp area 100 should also include the area between the LED lamps. area in between. The main body of the light guide plate is provided with a groove 31 for accommodating the LED lamp 60, and the LED lamp is accommodated in the groove 31 of the light guide plate 30, so that the main body of the light guide plate extends into the LED lamp area 100 through this form middle. The LED lamp is contained in the groove 31, which can prevent the LED lamp 60 from being squeezed and bumped, thereby positioning the position of the LED lamp 60 to avoid the phenomenon of position deviation; in addition, because the light guide plate 30 extends into the LED In the lamp area 100, the drive circuit board 50 can be supported by the groove edge 32 of the light guide plate 30, so as to avoid the position of the LED lamp from being shifted due to the lifting of the drive circuit board 50; moreover, the light guide plate 30 extends Into the LED lamp area 100, effectively reducing the phenomenon of light leakage of the LED lamp 60. Therefore, the present invention has the beneficial effects of good lighting effect and high stability.
所述凹槽31贯穿导光板主体的上下面，这样便于凹槽31的加工，也便于将LED灯容置于凹槽31中。所述LED灯60呈长条形状，这样便于拓宽LED灯的发光面，即能够给导光板提供更宽范围的光照。所述凹槽31的形状、大小与LED灯60的形状、大小相适配，即该凹槽31也可以做成长条形凹槽，其深度与条状LED灯的宽度相适配，这样所述LED灯60灯头顶部与所述凹槽31的槽口相平齐。The groove 31 runs through the upper and lower sides of the main body of the light guide plate, which facilitates the processing of the groove 31 and also facilitates the LED lamp to be accommodated in the groove 31 . The LED lamp 60 is in the shape of a strip, which facilitates widening the light-emitting surface of the LED lamp, that is, it can provide a wider range of illumination to the light guide plate. The shape and size of the groove 31 are adapted to the shape and size of the LED lamp 60, that is, the groove 31 can also be made into a strip-shaped groove, and its depth is adapted to the width of the strip-shaped LED lamp. The top of the cap of the LED lamp 60 is flush with the notch of the groove 31 .
参考图9-10，所述LED灯60为侧出光的LED灯，该LED灯包括与驱动电路板50连接的灯芯62，包裹于该灯芯62上的灯壳61。所述灯壳61靠近导光板30入光面一侧开孔，灯芯62通电后发光，光线通过灯壳61侧面的开孔射入导光板30的入光面。Referring to FIGS. 9-10 , the LED lamp 60 is a side-emitting LED lamp. The LED lamp includes a wick 62 connected to the driving circuit board 50 and a lamp housing 61 wrapped on the wick 62 . The lamp housing 61 has a hole near the light-incident surface of the light guide plate 30 , and the wick 62 emits light after being energized.
参考图12，图13为本发明具有前光照明装置的电子纸显示屏在另一个优选实施了中的结构示意图；本实施例在上述实施例的基础上，在导光板30的下方加设有触摸屏模组70，即在导光板30与电泳显示模组10之间加设触摸屏模组70。所述触摸屏模组70能够使电子纸显示屏具有触控输入功能。Referring to FIG. 12, FIG. 13 is a structural schematic diagram of another preferred implementation of the electronic paper display screen with a front lighting device according to the present invention; this embodiment is based on the above-mentioned embodiments, and a The touch screen module 70 is to add a touch screen module 70 between the light guide plate 30 and the electrophoretic display module 10 . The touch screen module 70 can enable the electronic paper display screen to have a touch input function.
图13为本发明具有前光照明装置的电子纸显示屏在又一个优选实施了中的结构示意图。本实施例在在导光板30的上方加设有触摸屏模组70，这样能够使触摸屏模组70的操作更加灵敏。FIG. 13 is a schematic structural diagram of another preferred implementation of the electronic paper display screen with a front lighting device according to the present invention. In this embodiment, a touch screen module 70 is added above the light guide plate 30 , which can make the operation of the touch screen module 70 more sensitive.
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are equally included in the scope of patent protection of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911330123.0ACN111061111A (en) | 2014-01-10 | 2014-01-10 | Light guide plate, front light illuminating device and electronic paper display screen |
| CN201410013489.6ACN104776398A (en) | 2014-01-10 | 2014-01-10 | Light guide plate, front lighting device and electronic paper display |
| DE202014102978.8UDE202014102978U1 (en) | 2014-01-10 | 2014-06-30 | Light guide plate, lighting device of the headlight and screen of the E-paper |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013489.6ACN104776398A (en) | 2014-01-10 | 2014-01-10 | Light guide plate, front lighting device and electronic paper display |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911330123.0ADivisionCN111061111A (en) | 2014-01-10 | 2014-01-10 | Light guide plate, front light illuminating device and electronic paper display screen |
| Publication Number | Publication Date |
|---|---|
| CN104776398Atrue CN104776398A (en) | 2015-07-15 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911330123.0APendingCN111061111A (en) | 2014-01-10 | 2014-01-10 | Light guide plate, front light illuminating device and electronic paper display screen |
| CN201410013489.6APendingCN104776398A (en) | 2014-01-10 | 2014-01-10 | Light guide plate, front lighting device and electronic paper display |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911330123.0APendingCN111061111A (en) | 2014-01-10 | 2014-01-10 | Light guide plate, front light illuminating device and electronic paper display screen |
| Country | Link |
|---|---|
| CN (2) | CN111061111A (en) |
| DE (1) | DE202014102978U1 (en) |
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| CB02 | Change of applicant information | Address after:511458 building B, No. 3, Li Wei Road, Nansha District West Industrial Zone, Guangdong, Guangzhou, China Applicant after:GUANGZHOU OED TECHNOLOGIES CO., LTD. Address before:511458 building B, No. 3, Li Wei Road, Nansha District West Industrial Zone, Guangdong, Guangzhou, China Applicant before:Guangzhou OED Technologies Co., Ltd. | |
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