WO2014153790A1 - 一种背光模组及使用该背光模组的液晶显示装置 - Google Patents

一种背光模组及使用该背光模组的液晶显示装置 Download PDF

Info

Publication number
WO2014153790A1
WO2014153790A1 PCT/CN2013/073779 CN2013073779W WO2014153790A1 WO 2014153790 A1 WO2014153790 A1 WO 2014153790A1 CN 2013073779 W CN2013073779 W CN 2013073779W WO 2014153790 A1 WO2014153790 A1 WO 2014153790A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
guide plate
strip
backlight module
light guide
Prior art date
Application number
PCT/CN2013/073779
Other languages
English (en)
French (fr)
Inventor
苏赞加
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Publication of WO2014153790A1 publication Critical patent/WO2014153790A1/zh

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a backlight module and a liquid crystal display device using the same.
  • the backlight module is used to provide a backlight of the liquid crystal display device to enable the liquid crystal panel to display a picture.
  • the side-in LED backlight technology has been widely developed due to its ultra-thin and narrow borders.
  • a liquid crystal display device is provided with a frame on the periphery of the display area, and the width of the frame is W1.
  • another liquid crystal display device has a frame width of W2, wherein W2 is far. Less than W1, and the liquid crystal display device shown in Fig. 2 can provide a better visual experience for the viewer, and can be integrated into the environment of the television program, and thus is more popular.
  • the width of the border of the liquid crystal display device largely depends on the structure of the backlight module.
  • FIG. 3 shows a structure of a liquid crystal display module (including a backlight module and a liquid crystal panel) of a liquid crystal display device, including: an outer frame 101, a middle frame 102, an aluminum extrusion 103, a back plate 104, a reflection sheet 105, and a guide
  • the light guide plate 106, the optical film 107, the liquid crystal panel 108, and the LED light bar 110 are disposed, and the middle frame 102 is provided with a retaining wall 109 for shielding the light-coupled area between the light guide plate 106 and the LED light bar 110 (ie, the LED light-emitting surface)
  • the distance to the light-incident surface of the light guide plate is blocked by the retaining wall 109 to avoid light leakage.
  • the design of the middle frame 102 is also narrower, so that the middle frame is processed. Accuracy does not meet the needs of narrow frame.
  • the narrow frame makes the A value of the backlight module smaller and smaller.
  • the A value is the length of the LED light emitting surface to the display area of the liquid crystal display device (ie, the AA area), that is, as shown in FIG.
  • the light emitted by the LED is emitted at an angle, and a dark band is formed between the plurality of LEDs, and the area where the light is not illuminated is formed.
  • the technical problem to be solved by the present invention is to provide a backlight module having a narrow bezel and excellent display effect, and a liquid crystal display device using the same.
  • a backlight module comprising: a light guide plate, the light-emitting surface is provided with a regularly distributed microstructure;
  • a light bar disposed on one side of the light guide plate opposite to the light incident surface of the light guide plate;
  • the light-emitting panel is disposed with a light-absorbing strip at an edge of the light-emitting surface adjacent to the light-incident side thereof, and the light-absorbing strip extends at least to the light-emitting surface of the light strip to cover the light strip and the light-incident side of the light guide plate.
  • the light-absorbing strip is disposed under the optical film of the backlight module; and the light-absorbing strip covers a width of an edge region of the light-emitting surface of the light guide plate by at least 0.3 mm.
  • a backlight module comprising: a light guide plate, the light-emitting surface is provided with a regularly distributed microstructure;
  • a light bar disposed on one side of the light guide plate opposite to the light incident surface of the light guide plate;
  • the light-emitting panel is disposed with a light-absorbing strip at an edge of the light-emitting surface adjacent to the light-incident side thereof, and the light-absorbing strip extends at least to the light-emitting surface of the light strip to cover the light strip and the light-incident side of the light guide plate.
  • the coupling area between the two is disposed with a light-absorbing strip at an edge of the light-emitting surface adjacent to the light-incident side thereof, and the light-absorbing strip extends at least to the light-emitting surface of the light strip to cover the light strip and the light-incident side of the light guide plate.
  • the light absorbing strip is disposed under the optical film of the backlight module. To avoid exposure of the light from the optical film.
  • the light absorbing strip covers a width of an edge region of the light exit surface of the light guide plate by at least 0.3 mm. This can effectively absorb light at the edge of the light guide plate, thereby effectively eliminating the light collecting point.
  • the light absorbing strip is a black or gray elongated material having a light absorption rate of 30% or more. This can effectively eliminate the spotlight.
  • the light absorbing strip is a polyterephthalic plastic. The material has good light absorption properties and is relatively inexpensive.
  • the light absorbing strip is attached to an edge of the light emitting surface of the light guide plate.
  • a good attachment location is provided at the edge of the light guide.
  • the light absorbing strip is attached to the light bar.
  • the light absorbing strip can be attached to the light bar
  • the light absorbing strip is provided with an attaching portion for attaching to the PCB of the light bar. This improves the adhesion area of the light absorbing strip and improves the attaching reliability.
  • the light absorbing strip is attached to a lower surface of the optical film.
  • the optical film can be remanufactured by attaching the light absorbing strip at the same time, thereby completing the assembly process of the backlight module.
  • a liquid crystal display device includes the above backlight module.
  • the light-emitting surface of the light guide plate is provided with a microstructure, and the light-guiding plate is adjacent to the light-incident side thereof to cover the light-coupled region between the light bar and the light-incident side of the light guide plate.
  • the light absorbing strip is disposed on the edge of the light emitting surface of the light guide plate having a microstructure, because the light absorbing strip has a high light absorption rate, and the light incident on the direction of the absorption strip of the LED can be effectively absorbed, and the light of the condensed spot can be effectively absorbed.
  • the light absorbing strip can also cover the light-coupled area to avoid light leakage.
  • the frame of the liquid crystal display device can be made thinner without condensing.
  • the light-dark uneven light distribution emitted by the LED strip will be reflected back by the highly reflective surface.
  • the light distribution will remain uneven and bright. Hotspot Obviously, at the same time, if there is no retaining wall design, light can easily enter the end face of the diaphragm directly, causing light leakage.
  • FIG. 1 is a schematic structural view of a liquid crystal display device
  • FIG. 2 is a schematic structural view of another liquid crystal display device
  • 3 is a schematic structural view of a liquid crystal display module of a conventional liquid crystal display device
  • FIG. 4 is a schematic view showing a phenomenon of collecting light of a liquid crystal display device
  • FIG. 5 is a graph showing a test result of a light collecting phenomenon of a liquid crystal display device
  • FIG. 6 is a schematic structural diagram of a liquid crystal display module according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic structural view of a liquid crystal display module according to Embodiment 2 of the present invention.
  • FIG. 8 is a configuration diagram of a light guide plate and a light absorption strip according to Embodiment 2 of the present invention.
  • Figure 9 is a partial enlarged view of A in Figure 8,
  • Figure 10 is a comparison diagram of the use of a light absorbing strip when the illuminating surface has no microstructure.
  • Figure 11 is a second arrangement of the light absorbing strip according to the second embodiment of the present invention.
  • Figure 12 is a third arrangement of the light absorbing strip according to the second embodiment of the present invention.
  • Fig. 13 is a view showing the display effect of the liquid crystal display device of the second embodiment of the present invention.
  • the present embodiment provides a new liquid crystal display module 1 , including: a backlight module 100 and a liquid crystal panel 108 .
  • the backlight module 100 includes: a back plate 104 and a back plate.
  • the strip 110 dissipates the aluminum extrusion 103 and the middle frame 102 for limiting the various components within the back panel.
  • the liquid crystal panel 108 is disposed above the middle frame 102, and the liquid crystal panel 108 is pressed against the middle frame 102 by the outer frame 101.
  • the bottommost one of the optical film 107 is provided with a black printed layer 111 having a width of 3-5 mm, extending to the light emitting surface of the light bar 110 to cover the light bar 110 and the light guide plate.
  • the light-coupled area between the 106s prevents light from leaking through the upper portion of the light-coupled area to the liquid crystal panel.
  • the black printed layer 111 is expensive to print, and its price accounts for the price of the optical film. 70% of the grid, thereby increasing the production cost of the backlight module.
  • the black printed layer 111 can prevent the occurrence of light leakage, the phenomenon of the light spot appearing in the display area cannot be eliminated, and the display effect of the liquid crystal display device is still affected.
  • the embodiment is different from the first embodiment in that the light-emitting surface of the light guide plate 106 is provided with a prism structure arranged in parallel (as shown in FIG. 9), and the light guide plate 106 is adjacent to the light-incident side thereof.
  • the light-emitting surface 112 is disposed at the edge of the light-emitting surface, and the light-absorbing strip 112 extends to at least the light-emitting surface of the light strip 110 to cover the light-coupled area between the light strip 110 and the light-incident side of the light guide plate 106.
  • the reason why the microstructure is matched with the light absorbing strip 112 on the light exit surface of the light guide plate 106 is that, as shown in FIG. 10, a light absorbing strip is disposed on a light guide plate having a smooth light-emitting surface and no microstructure (ie, The black PET strip shown in the figure shows the change of the hotspot phenomenon.
  • the plastic frame area ie, the middle frame
  • the contact area is much larger than that of the micro-structured light guide plate, so that the original internal total reflection of the light emitted by the LED at the contact surface is seriously damaged, and the light is scattered.
  • the light guide plate causes the hotspot to increase.
  • the light guide plate 106 having a microstructure on the surface can eliminate the situation in which the condensing phenomenon is aggravated, and can reduce the occurrence of the condensing phenomenon or reduce the degree of the condensing phenomenon.
  • the microstructure of the surface of the light guide plate 106 may be a pointed prism structure, a rounded prism structure, or a three-dimensional structure such as a pyramid structure, and preferably a uniform displacement of the light guide plate. On the surface, to make the light uniform.
  • the light absorbing strip 112 is disposed under the optical film 107 of the backlight module to prevent light from being exposed from the optical film.
  • the light absorbing strip 112 covers the edge region of the light exit surface of the light guide plate 106 to have a width of at least 0.3 mm or more. This can effectively absorb light at the edge of the light guide plate 106, thereby effectively eliminating the hotspot.
  • the light absorbing strip 112 is a black or gray strip-shaped material having a light absorptance of 30% or more, so that the condensed spot can be effectively eliminated. For this reason, the polyethylene terephthalate plastic is selected in this embodiment. PET ), the material has good light absorption performance, and the price The grid is cheaper, and its area as a light absorbing strip is small, and its cost can be neglected.
  • a black PET strip was used as the light absorbing strip (light absorption rate > 90%), and since it absorbed the light, the inventors conducted experiments to confirm the influence. Experiments were carried out with the structure shown in Fig. 7. The experimental results were as follows: After adding the black PET, the luminance of the backlight module was affected by about 1%, so that it was considered to have substantially no effect.
  • the light absorbing strip 112 is attached to the edge of the light emitting surface of the light guide plate 106 , and the contact area of the light absorbing strip 112 at the edge of the light guide plate 106 is large, so that Provide a good attachment location.
  • the light absorbing strip 112 can also be attached to the PCB of the light bar 110, so that the adhesive material such as glue can be avoided on the light guide plate 106, and the setting method is
  • the light absorbing strip 112 is provided with an attaching portion for attaching to the PCB of the light bar, as shown in the drawing, so that the light absorbing strip 112 has an L-shaped cross section, thereby improving the light absorbing strip.
  • the light absorbing strip 112 may also be attached to the lower surface of the optical film 107.
  • the light absorbing strip is attached at the same time, thereby completing the assembly process of the backlight module.
  • the embodiment further provides a liquid crystal display device using the backlight module to improve the display effect of the liquid crystal display device.
  • the liquid crystal display device As shown in FIG. 13, after using the backlight module, the liquid crystal The display effect and the quality of the display device are improved, and the hotspot or bright line is substantially eliminated.
  • the frame of the liquid crystal display device can be designed to be thinner, thereby further enhancing the viewer's visual experience.

Abstract

一种背光模组(100),包括:导光板(106),其出光面设置有规则分布的微结构;灯条(110),设置在导光板(106)的一侧,与导光板(106)的入光面相对;导光板(106)与其入光侧相邻的出光面边缘设置有光吸收条(112),光吸收条(112)至少延伸至灯条(110)的发光面以遮盖灯条(110)与导光板(106)入光侧之间的耦光区域。

Description

一种背光模组及使用该背光模组的液晶显示装置
【技术领域】
本发明涉及液晶显示领域, 更具体的说, 涉及一种背光模组及使用该背光 模组的液晶显示装置。
【背景技术】
背光模组用于提供液晶显示装置的背光源以使液晶面板能够显示画面。 目 前, 侧入式 LED背光技术由于具有超薄、 可实现窄边框等特点而得到广泛的发 展。
如图 1所示为一种液晶显示装置, 在显示区域的外围设置有边框, 边框的 宽度为 W1 , 如图 2所示为另一种液晶显示装置, 其边框宽度为 W2, 其中, W2 远小于 W1 , 而图 2所示的液晶显示装置能为观众提供更好的视觉感受, 更能融 入电视节目的环境中, 因而更受欢迎。 液晶显示装置边框的宽度大小很大程度 上取决于背光模组的结构。
如图 3所示为一种液晶显示装置的液晶显示模组(包括背光模组以及液晶 面板)结构, 包括: 外框 101、 中框 102、 铝挤 103、 背板 104、 反射片 105、 导 光板 106、 光学膜片 107、 液晶面板 108以及 LED灯条 110, 所述中框 102设置 有挡墙 109用于遮蔽导光板 106与 LED灯条 110之间的耦光区域(即 LED灯发 光面到导光板入光面的距离区域),通过挡墙 109遮蔽耦光区域以避免发生漏光, 但是, 由于窄边框化的需求, 中框 102 的设计也越来越窄, 从而使得中框的加 工精度无法满足窄边框化的需求。
另外, 窄边框化导致背光模组的 A值越来越小, 如图 4所示, A值为 LED 发光面到液晶显示装置显示区域(即 AA区) 的长度, 即如图 1所示为 LED发 光面到中框 102的内沿的距离;由于 A值的减小,带来的问题是聚光点( hotspot ) 现象的产生, 在液晶显示装置的显示区域(即 AA区)的边缘处, LED发出的 光线以一定的角度射出, 多个 LED之间会出现光线照不到的区域形成暗带, 而 光线交叉的地方形成聚光, 也就是 LED混光不均勾, 如图 5所示, 这样一亮一 暗交替的从上往下排布的现象即为聚光点现象(也称为萤火虫现象)以及亮线, 严重影响了背光模组的光学品味以及液晶显示装置的显示效果。
【发明内容】
本发明所要解决的技术问题是提供一种窄边框且显示效果优良的背光模组 及使用该背光模组的液晶显示装置。
本发明的目的是通过以下技术方案来实现的: 一种背光模组, 包括: 导光板, 出光面设置有规则分布的微结构;
灯条, 设置在所述导光板的一侧, 与所述导光板的入光面相对;
所述导光板与其入光侧相邻的出光面边缘设置有光吸收条, 所述光吸收条 至少延伸至所述灯条的发光面以遮盖所述灯条与所述导光板入光侧之间的耦光 区域; 所述光吸收条设置在所述背光模组的光学膜片的下方; 所述光吸收条遮 盖所述导光板出光面边缘区域的宽度至少 0.3mm。
本发明的目的还可以通过以下技术方案来实现: 一种背光模组, 包括: 导光板, 出光面设置有规则分布的微结构;
灯条, 设置在所述导光板的一侧, 与所述导光板的入光面相对;
所述导光板与其入光侧相邻的出光面边缘设置有光吸收条, 所述光吸收条 至少延伸至所述灯条的发光面以遮盖所述灯条与所述导光板入光侧之间的耦光 区域。
优选的, 所述光吸收条设置在所述背光模组的光学膜片的下方。 以避免光 线从光学膜片露出。
优选的, 所述光吸收条遮盖所述导光板出光面边缘区域的宽度至少 0.3mm。 这样可以有效的在导光板的边缘吸收光线, 以此有效的消除聚光点。
优选的, 所述光吸收条为光吸收率在 30%以上的黑色或灰色长条形材料。 这样可以有效的消除聚光点。 优选的, 所述光吸收条为聚对苯二甲酸类塑料。 该材料的光吸收性能较好, 价格较为便宜。
优选的, 所述光吸收条贴附在所述导光板的出光面边缘处。 导光板的边缘 处可提供好的贴附位置。
优选的, 所述光吸收条贴附在所述灯条上。 可以将光吸收条贴附在灯条的
PCB板上, 从而可以避免在导光板上使用胶水等贴附材料。
优选的, 所述光吸收条设置有一用于贴附于所述灯条的 PCB的贴附部。 这 样可提高光吸收条的贴附面积进而提高贴附可靠度。
优选的, 所述光吸收条贴附在所述光学膜片的下表面。 这样可以再制造光 学膜片是即同时贴附光吸收条, 从而筒化背光模组的装配过程。
一种液晶显示装置, 包括上述的背光模组。
本发明由于导光板的出光面设置有微结构, 并且导光板与其入光侧相邻的 盖所述灯条与所述导光板入光侧之间的耦光区域。 光吸收条设置在具有微结构 的导光板出光面边缘上, 因为光吸收条具有较高的光吸收率, 能将 LED入射到 吸收条方向的光有效吸收, 可以有效的吸收聚光点的光线, 从而消除边缘处的 聚光现象(hotspot ), 进而提高液晶显示的显示品位, 同时, 光吸收条还可以遮 住耦光区域, 避免漏光。 在聚光现象和漏光均得以解决的情况下, 液晶显示装 置的边框则可以做的更薄而不会产生聚光现象。 若为其他耦光设计, LED灯条 出射的亮暗不均的光分布, 会被高反射的表面反射回来, 进入导光板时依然会 保持亮暗不均的光分布, 聚光现象 (hotspot)明显, 同时, 若无挡墙设计, 光容易 直接进入膜片端面, 造成漏光。
【附图说明】
图 1是一种液晶显示装置的结构示意图,
图 2是另一种液晶显示装置的结构示意图, 图 3是现有一种液晶显示装置的液晶显示模组结构示意图,
图 4是液晶显示装置的聚光现象示意图,
图 5是液晶显示装置的聚光现象测试效果图,
图 6是本发明实施例一的液晶显示模组的结构示意图,
图 7是本发明实施例二的液晶显示模组的结构示意图,
图 8是本发明实施例二的导光板与光吸收条的配置图,
图 9是图 8中 A的局部放大图,
图 10是在出光面无微结构时使用光吸收条的对比图,
图 11是本发明实施例二中所述的光吸收条的第二种设置方式,
图 12是本发明实施例二中所述的光吸收条的第三种设置方式,
图 13是本发明实施例二液晶显示装置的显示效果图。
【具体实施方式】
下面结合附图和较佳的实施例对本发明作进一步说明。
实施例一
如图 6所示, 本实施例提供了一种新的液晶显示模组 1的结构, 包括: 背 光模组 100以及液晶面板 108, 所述背光模组 100包括: 背板 104、 设置在背板 104内的反射片 105, 设置在反射片 105之上的导光板 106, 设置在导光板 106 之上的光学膜片 107, 设置在导光板入光侧的 LED灯条 110, 用于提供 LED灯 条 110散热的铝挤 103以及用于对背板内的各个组件进行限位的中框 102。所述 液晶面板 108设置在所述中框 102之上, 所述液晶面板 108由所述外框 101将 其压在所述中框 102上。
本实施例中, 光学膜片 107最底部的一张设置有黑色印刷层 111 , 所述黑色 印刷层 111的宽度为 3-5mm, 延伸至灯条 110的发光面以遮盖灯条 110与导光 板 106之间的耦光区域, 从而避免光线通过耦光区域上部传播到液晶面板上发 生漏光。 但是, 该黑色印刷层 111 的印刷价格昂贵, 其价格占到了光学膜片价 格的七成, 从而提高了背光模组的生产成本。 另外, 虽然黑色印刷层 111 可以 阻止漏光的发生, 但却不能消除出现在显示区域的聚光现象(hotspot ), 液晶显 示装置的显示效果依然受到影响。
实施例二
如图 7-9所示, 本实施例与实施例一不同的是, 导光板 106的出光面设置 有平行排布的棱镜结构(如图 9所示 ), 导光板 106与其入光侧相邻的出光面边 缘设置有光吸收条 112,所述光吸收条 112至少延伸至所述灯条 110的发光面以 遮盖所述灯条 110与所述导光板 106入光侧之间的耦光区域。
本实施例中, 在导光板 106的出光面设置微结构配合光吸收条 112使用的 原因在于, 如图 10所示为在一种出光面光滑无微结构的导光板上设置光吸收条 (即图中所示黑色 PET条)后聚光现象(hotspot ) 的变化情况, 所述胶框区域 (即中框)覆盖着液晶面板的边缘处聚光现象加剧, 而无黑色 PET条遮盖的地 方也存在聚光现象, 但并没有加剧。 因为当黑色 PET贴附到出光面光滑的导光 板上, 接触面积相对于具有微结构导光板大很多, 使得 LED出射的光在该接触 面处的原先的内全反射受到严重破坏, 光线散射出导光板, 进而造成聚光现象 ( hotspot )加剧。 而表面具有微结构的导光板 106, 可以消除聚光现象加剧的 情形, 并且可以降低聚光现象的产生或降低聚光现象的程度。
在本实施例中, 导光板 106表面的微结构可以是尖角棱镜结构, 也可以是 圓角的棱镜结构, 或者金字塔结构等立体结构均可, 最好是均匀的排量在导光 板的出光面上, 以使得出光均匀。
本实施例中, 所述光吸收条 112设置在所述背光模组的光学膜片 107的下 方, 以避免光线从光学膜片露出。 光吸收条 112遮盖所述导光板 106 出光面边 缘区域的宽度至少为 0.3mm或 0.3mm以上。这样可以有效的在导光板 106的边 缘吸收光线, 以此有效的消除聚光点 (hotspot )。 另外, 所述光吸收条 112为光 吸收率在 30%以上的黑色或灰色长条形材料, 以此可以有效的消除聚光点, 为 此, 本实施例选择聚对苯二甲酸类塑料(PET ), 该材料的光吸收性能较好, 价 格较为便宜, 而作为光吸收条其面积很小, 几乎可以忽略其成本。
本实施例中, 采用黑色 PET条作为光吸收条(光吸收率>90% ) , 因其对光 线具有吸收作用, 因此发明人对此进行了实验, 以确认其影响。 以图 7所示的 结构进行实验, 实验结果是: 添加该黑色 PET后, 对背光模组的辉度影响在 1% 左右, 因此可以认为基本没有影响。
本实施例中, 如图 7所示, 所述光吸收条 112贴附在所述导光板 106的出 光面边缘处, 导光板 106的边缘处与光吸收条 112的接触面积较大, 因而可提 供好的贴附位置。 当然, 如图 11所示, 所述光吸收条 112也可以贴附在所述灯 条 110的 PCB板上, 从而可以避免在导光板 106上使用胶水等贴附材料, 而这 种设置方法则最好在光吸收条 112上设置有一用于贴附于所述灯条的 PCB的贴 附部, 如图中所示, 使得光吸收条 112的截面呈 L形, 这样可提高光吸收条的 贴附面积进而提高贴附可靠度。 如图 12所示, 所述光吸收条 112还可以贴附在 所述光学膜片 107的下表面。 这样可以再制造光学膜片 107时即同时贴附光吸 收条, 从而筒化背光模组的装配过程。
作为改进后的背光模组, 本实施例同时提供一种应用了此背光模组的液晶 显示装置, 以提高液晶显示装置的显示效果, 如图 13所示, 使用了上述背光模 组后,液晶显示装置的显示效果及品位得以提高,基本消除了聚光现象(hotspot ) 或亮线, 在此情况下, 使得液晶显示装置的边框可以设计得更薄, 进而进一步 提高观众的视觉感受。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明, 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干筒单推演或替 换, 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种背光模组, 包括:
导光板, 出光面设置有规则分布的微结构;
灯条, 设置在所述导光板的一侧, 与所述导光板的入光面相对;
所述导光板与其入光侧相邻的出光面边缘设置有光吸收条, 所述光吸收条 至少延伸至所述灯条的发光面以遮盖所述灯条与所述导光板入光侧之间的耦光 区域; 所述光吸收条设置在所述背光模组的光学膜片的下方; 所述光吸收条遮 盖所述导光板出光面边缘区域的宽度至少 0.3mm。
2、 一种背光模组, 包括:
导光板, 出光面设置有规则分布的微结构;
灯条, 设置在所述导光板的一侧, 与所述导光板的入光面相对;
所述导光板与其入光侧相邻的出光面边缘设置有光吸收条, 所述光吸收条 至少延伸至所述灯条的发光面以遮盖所述灯条与所述导光板入光侧之间的耦光 区域。
3、 如权利要求 2所述的背光模组 , 其中, 所述光吸收条设置在所述背光模 组的光学膜片的下方。
4、 如权利要求 2所述的背光模组, 其中, 所述光吸收条遮盖所述导光板出 光面边缘区域的宽度至少 0.3mm。
5、 如权利要求 2所述的背光模组, 其中, 所述光吸收条为光吸收率在 30% 以上的黑色或灰色长条形材料。
6、 如权利要求 5所述的背光模组, 其中, 所述光吸收条为聚对苯二甲酸类 塑料。
7、 如权利要求 2所述的背光模组, 其中, 所述光吸收条贴附在所述导光板 的出光面边缘处。
8、如权利要求 2所述的背光模组, 其中, 所述光吸收条贴附在所述灯条上。
9、 如权利要求 8所述的背光模组, 其中, 所述光吸收条设置有一用于贴附 于所述灯条的 PCB的贴附部。
10、 如权利要求 2所述的背光模组, 其中, 所述光吸收条贴附在所述光学 膜片的下表面。
11、 一种液晶显示装置, 包括:
导光板, 出光面设置有规则分布的微结构;
灯条, 设置在所述导光板的一侧, 与所述导光板的入光面相对;
所述导光板与其入光侧相邻的出光面边缘设置有光吸收条, 所述光吸收条 至少延伸至所述灯条的发光面以遮盖所述灯条与所述导光板入光侧之间的耦光 区域。
12、 如权利要求 11所述的液晶显示装置, 其中, 所述光吸收条设置在所述 背光模组的光学膜片的下方。
13、 如权利要求 11所述的液晶显示装置, 其中, 所述光吸收条遮盖所述导 光板出光面边缘区域的宽度至少 0.3mm。
14、 如权利要求 11所述的液晶显示装置, 其中, 所述光吸收条为光吸收率 在 30%以上的黑色或灰色长条形材料。
15、 如权利要求 14所述的液晶显示装置, 其中, 所述光吸收条为聚对苯二 甲酸类塑料。
16、 如权利要求 11所述的液晶显示装置, 其中, 所述光吸收条贴附在所述 导光板的出光面边缘处。
17、 如权利要求 11所述的液晶显示装置, 其中, 所述光吸收条贴附在所述 灯条上。
18、 如权利要求 17所述的液晶显示装置, 其中, 所述光吸收条设置有一用 于贴附于所述灯条的 PCB的贴附部。
19、 如权利要求 11所述的液晶显示装置, 其中, 所述光吸收条贴附在所述 光学膜片的下表面。
PCT/CN2013/073779 2013-03-28 2013-04-07 一种背光模组及使用该背光模组的液晶显示装置 WO2014153790A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201320145768.9 2013-03-28
CN2013201457689U CN203240400U (zh) 2013-03-28 2013-03-28 一种背光模组及使用该背光模组的液晶显示装置

Publications (1)

Publication Number Publication Date
WO2014153790A1 true WO2014153790A1 (zh) 2014-10-02

Family

ID=49317696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/073779 WO2014153790A1 (zh) 2013-03-28 2013-04-07 一种背光模组及使用该背光模组的液晶显示装置

Country Status (2)

Country Link
CN (1) CN203240400U (zh)
WO (1) WO2014153790A1 (zh)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9798069B2 (en) * 2013-11-26 2017-10-24 Sakai Display Products Corporation Backlight device and display apparatus
CN103823319B (zh) * 2014-03-10 2016-03-09 深圳市华星光电技术有限公司 背光模组及用该背光模组的液晶显示装置
CN104464534B (zh) * 2014-12-10 2017-09-05 深圳市华星光电技术有限公司 显示模块及具有该显示模块的显示装置
CN204302525U (zh) 2015-01-04 2015-04-29 京东方光科技有限公司 导光板、背光源及显示装置
CN105090798A (zh) * 2015-08-11 2015-11-25 京东方光科技有限公司 灯条、背光模组及其组装方法、显示装置
CN105759505B (zh) * 2016-05-13 2019-03-26 青岛海信电器股份有限公司 一种背光模组及液晶显示设备
CN106352272B (zh) * 2016-08-22 2019-09-17 深圳市华星光电技术有限公司 一种提高品味的侧入式背光模组及显示装置
CN108333666A (zh) * 2018-02-01 2018-07-27 苏州向隆塑胶有限公司 背光模组、背光模组的组装方法及导光板的制造方法
CN108766248A (zh) * 2018-08-07 2018-11-06 奥捷科技(厦门)有限公司 一种显示装置及其制造方法
CN109828411A (zh) * 2019-02-22 2019-05-31 信利光电股份有限公司 一种背光源
CN111123582A (zh) * 2019-12-28 2020-05-08 苏州视达讯远电子科技有限公司 便于散热的侧入式高亮度背光模块
KR102405870B1 (ko) * 2021-09-24 2022-06-08 (주)상도전기 도광판을 이용한 led 조명장치
CN114859456A (zh) * 2022-05-07 2022-08-05 深圳市宏普欣电子科技有限公司 防漏光的背光源模组
CN115167036B (zh) * 2022-09-08 2022-12-23 惠科股份有限公司 背光模组和显示装置
US11815710B1 (en) 2023-06-19 2023-11-14 HKC Corporation Limited Backlight module and display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002357823A (ja) * 2001-05-31 2002-12-13 Optrex Corp 液晶表示素子用バックライト
CN1742179A (zh) * 2003-01-29 2006-03-01 三菱丽阳株式会社 面光源装置
CN200965602Y (zh) * 2006-07-07 2007-10-24 科桥电子股份有限公司 用于背光模块的胶框结构改良
CN101149526A (zh) * 2006-09-19 2008-03-26 欧姆龙株式会社 面光源装置
CN202165920U (zh) * 2011-06-03 2012-03-14 纬创资通股份有限公司 具有遮光功能的背光模块及其显示设备
CN102955291A (zh) * 2011-08-15 2013-03-06 株式会社日本显示器东 显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002357823A (ja) * 2001-05-31 2002-12-13 Optrex Corp 液晶表示素子用バックライト
CN1742179A (zh) * 2003-01-29 2006-03-01 三菱丽阳株式会社 面光源装置
CN200965602Y (zh) * 2006-07-07 2007-10-24 科桥电子股份有限公司 用于背光模块的胶框结构改良
CN101149526A (zh) * 2006-09-19 2008-03-26 欧姆龙株式会社 面光源装置
CN202165920U (zh) * 2011-06-03 2012-03-14 纬创资通股份有限公司 具有遮光功能的背光模块及其显示设备
CN102955291A (zh) * 2011-08-15 2013-03-06 株式会社日本显示器东 显示装置

Also Published As

Publication number Publication date
CN203240400U (zh) 2013-10-16

Similar Documents

Publication Publication Date Title
WO2014153790A1 (zh) 一种背光模组及使用该背光模组的液晶显示装置
KR101736986B1 (ko) 디스플레이 장치
WO2011080955A1 (ja) 面状照明装置およびそれを備えた表示装置
EP2743573B1 (en) Backlight module and display device
TWI547740B (zh) 具遮光模組之背光模組以及使用此背光模組的顯示裝置
US20190129229A1 (en) Narrow frame display panel and display device
TWI477856B (zh) 顯示裝置
TWI519853B (zh) 顯示裝置
CN110109214B (zh) 一种设有凸台结构的导光板、背光模组及指纹识别装置
WO2014005337A1 (zh) 一种液晶显示装置
CN110673389A (zh) 背光模组及显示装置
WO2017096864A1 (zh) 一种背光模组、显示模组及显示设备
US20120300428A1 (en) Backlight Module
US10823895B2 (en) Light-emitting module
WO2017024756A1 (zh) 灯条、背光模组及其组装方法、显示装置
WO2016169173A1 (zh) 导光板、背光源和显示装置
JP5985364B2 (ja) 光源ユニット及び照明装置
JP2007256697A (ja) 液晶表示装置
US9335584B2 (en) Display device
CN208848016U (zh) 背光模组和液晶显示装置
TWM477590U (zh) 背光模組
KR102253797B1 (ko) 백라이트 유닛 및 이를 이용한 액정표시장치
JP4796899B2 (ja) バックライト装置
TWI509189B (zh) 顯示器及其背光模組及其光源模組
US20120176567A1 (en) Liquid crystal display device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13880219

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13880219

Country of ref document: EP

Kind code of ref document: A1