WO2016045201A2 - 导光板及液晶显示装置 - Google Patents

导光板及液晶显示装置 Download PDF

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Publication number
WO2016045201A2
WO2016045201A2 PCT/CN2014/093728 CN2014093728W WO2016045201A2 WO 2016045201 A2 WO2016045201 A2 WO 2016045201A2 CN 2014093728 W CN2014093728 W CN 2014093728W WO 2016045201 A2 WO2016045201 A2 WO 2016045201A2
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WIPO (PCT)
Prior art keywords
light
guide plate
shape
light guide
liquid crystal
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PCT/CN2014/093728
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English (en)
French (fr)
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WO2016045201A3 (zh
Inventor
邓天应
陈细俊
劳宣招
许怀书
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Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New Technology Co Ltd
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Publication of WO2016045201A2 publication Critical patent/WO2016045201A2/zh
Publication of WO2016045201A3 publication Critical patent/WO2016045201A3/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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  • the present invention relates to the field of liquid crystal display terminals, and in particular, to a light guide plate and a liquid crystal display device.
  • the liquid crystal panel is one of the important components that determine the display quality of the entire liquid crystal display screen, which directly affects the viewing effect of the screen, and the existing liquid crystal panel has inevitable defects. For example, after the panel is formed, the local light transmittance is not Both, and there is a problem that the display screen is inconsistent. In addition, in the curved liquid crystal display, due to the bending of the liquid crystal panel, the light transmittance of the panel is greatly reduced, especially the area of the left and right parts of the panel is larger than the area of the middle portion of the panel, resulting in the liquid crystal display. The brightness of the output screen appears to be a problem of severe unevenness in the left, center, and right.
  • the main object of the present invention is to solve the technical problem that the brightness of the screen displayed on the liquid crystal panel is locally uneven.
  • the present invention provides a light guide plate including a light emitting surface, a bottom surface disposed opposite to the light emitting surface, and a light incident surface connecting the light emitting surface and the bottom surface, wherein the bottom surface is at least divided into a light guiding region and a second light guiding region, wherein the first light guiding region is arranged with a plurality of first shape mesh dots, and the second light guiding region is arranged with a plurality of second shape mesh dots, the first shape The dot and the second shape dot have different reflectivities to light.
  • the first light guiding region is located at a middle portion of the bottom surface, and the second light guiding region is located between the first light guiding region and the light incident surface; the reflected light of the second shape dot is stronger than The reflected light intensity of the first shape dot is strong.
  • a third light guiding area is disposed on the bottom surface, the third light guiding area is disposed between the light incident surface and the second light guiding area; and the third light guiding area includes a plurality of a uniformly arranged third shape dot, the reflected light intensity of the third shape dot being smaller than the reflected light intensity of the second shape dot.
  • the first shape dot and the second shape dot and the third shape dot are disposed on the bottom surface by a laser process or a printing process.
  • the first shape dot is a square shape
  • the second shape dot is a spherical shape
  • a third light guiding area is disposed on the bottom surface, the third light guiding area is disposed between the light incident surface and the second light guiding area; and the third light guiding area includes a plurality of a uniformly arranged third shape dot, the reflected light intensity of the third shape dot being smaller than the reflected light intensity of the second shape dot.
  • the first shape dot and the second shape dot and the third shape dot are disposed on the bottom surface by a laser process or a printing process.
  • the second light guiding regions are symmetrically disposed on both sides of the first light guiding region.
  • a third light guiding area is disposed on the bottom surface, the third light guiding area is disposed between the light incident surface and the second light guiding area; and the third light guiding area includes a plurality of a uniformly arranged third shape dot, the reflected light intensity of the third shape dot being smaller than the reflected light intensity of the second shape dot.
  • the first shape dot and the second shape dot and the third shape dot are disposed on the bottom surface by a laser process or a printing process.
  • the third light guiding region is disposed symmetrically with the first light guiding region as an axis.
  • the third light guiding area is in contact with the second light guiding area.
  • the light guide plate is arranged in a curved shape such that the light exit surface and the bottom surface are curved surfaces.
  • the present invention further provides a liquid crystal display device including a light source, a light guide plate, and a liquid crystal panel, the light guide plate including a light emitting surface, a bottom surface opposite to the light emitting surface, and Connecting the light-emitting surface to the light-incident surface of the bottom surface, wherein the bottom surface of the light guide plate includes a plurality of regions having different dot shapes, and the light source is opposite to the light-incident surface of the light guide plate, and the liquid crystal
  • the light panel emits light along the light guide surface of the light guide plate, and the light emitted by the light source is reflected by the light guide plate and reflected from the mesh point of the bottom surface of the light guide plate to be emitted from the light exit surface onto the liquid crystal panel.
  • the direction of propagation of the light is curved, and a plurality of regions of the bottom surface of the light guide plate having different dot shapes are arranged along the light propagation direction.
  • the light guide plate has two light-input surfaces disposed opposite to each other, and the bottom surface of the light guide plate sequentially includes a first light guide area, a second light guide area and a second shape having different dot shapes from the middle to the two light incident surfaces.
  • the dot of the second light guiding region has the strongest reflection ability for light
  • the dot of the first light guiding region is second
  • the dot of the third light guiding region has the weakest reflecting ability for light.
  • the liquid crystal display device further includes a reflective sheet, an optical film, and a front frame, the reflective sheet is disposed on a side of the back plate opposite to the light guide plate; the optical film is disposed on the guide
  • the front panel is disposed on the outer side of the plastic frame and is fixedly connected to the plastic frame, and the front frame and the plastic frame are fixed between the light panel and the liquid crystal panel.
  • a card slot for fixing the liquid crystal panel is formed between the two.
  • At least a first light guiding area and a second light guiding area are disposed on a bottom surface of the light guiding plate, and a plurality of first shape dot points are disposed on the first light guiding area, and a plurality of first light guiding areas are disposed on the second light guiding area a shape of the second shape dot, and the difference in the reflection ability of the first shape dot and the second shape dot to the light is different, so as to solve the problem that the partial transmittance of the liquid crystal panel is uneven, and the display screen is uneven.
  • a dot having a strong reflected light intensity is disposed at a corresponding position on the light guide plate, and a corresponding position on the light guide plate is in a region where the light transmittance is high on the liquid crystal panel.
  • the screen dots with weak reflected light are arranged, so that the light guide plate reflects the light onto the liquid crystal panel, and finally the brightness of the screen displayed by the entire liquid crystal panel is substantially the same, thereby improving the uniformity of the display screen of the liquid crystal display device.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a light guide plate of the present invention.
  • FIG. 2 is a schematic view showing another perspective structure of FIG. 1;
  • FIG. 3 is a schematic structural view of a light guide plate applied to a liquid crystal display device according to the present invention.
  • FIG. 4 is a schematic enlarged view of a portion A of FIG. 3.
  • the invention provides a light guide plate suitable for a liquid crystal display device, and is particularly suitable for a side-entry liquid crystal display device, such as a side-entry liquid crystal television and a side-entry liquid crystal display.
  • the directions of the ends of the arrow z in FIG. 3 are defined as the left and right sides of the entire liquid crystal display device, that is, the propagation direction of the light.
  • the light guide plate includes a light emitting surface a, a bottom surface disposed opposite to the light emitting surface a, and a light incident surface b connecting the light emitting surface a and the bottom surface.
  • the light-incident surface b may be one or more, preferably two in the embodiment, and disposed oppositely; the bottom surface is divided at least with the first light guiding region 10 and the second light guiding region 20,
  • the first light guiding area 10 is arranged with a plurality of first shape dots 101
  • the second light guiding area 20 is arranged with a plurality of second shape dots 102, the first shape dots 101 and the second shape dots 102
  • the ability to reflect light is different.
  • the shape of the first shape dot 101 or the second shape dot 102 may be a spherical shape, a linear shape, a square shape or other polyhedral shape, such as a hexahedron.
  • the light guide plate is in the form of a flat plate. Of course, in other embodiments, the light guide plate may also be a curved arrangement.
  • the idea of the present embodiment is directed to the problem that the display screen has inconsistencies in brightness due to uneven local transmittance of the liquid crystal panel.
  • the light guiding region disposed on the bottom surface is not limited to the first light guiding region 10 and The second light guiding area 20 can also be disposed more.
  • the light transmittance of each area on the liquid crystal panel should be set. Specifically, the light penetration on the liquid crystal panel is corresponding to the bottom surface of the light guiding plate 100.
  • a dot having a relatively high reflected light intensity is disposed at a position of a lower region, and a dot having a weaker reflected light intensity is disposed on a bottom surface of the light guide plate 100 corresponding to a region of the liquid crystal panel having a higher light transmittance.
  • the brightness of the entire liquid crystal panel 200 should be uniform and substantially uniform.
  • the structure in which the light guide plate 100 is applied to the side-entry liquid crystal display device is as shown in FIGS. 3 and 4. Where L represents the path of the light reflected by each region of the light guide plate 100.
  • the present invention provides at least a first light guiding region 10 and a second light guiding region 20 on the bottom surface of the light guiding plate 100, and a plurality of first shape mesh points 101 are disposed on the first light guiding region 10, in the second light guiding region.
  • a plurality of second shape dots 102 are disposed on the second shape dot, and the reflection power of the first shape dot 101 and the second shape dot 102 is different from each other to solve the unevenness of the partial transmittance of the liquid crystal panel.
  • the said The first light guiding region 10 is located at a middle portion of the bottom surface, and the second light guiding region 20 is located between the first light guiding region 10 and the light incident surface b; the reflected light of the second shape dot 102 is stronger than The reflected light intensity of the first shape dot 101 is strong. It is easy to understand that the first shape dot 101 reflects the light incident through the light incident surface b toward the region where the light transmittance of the liquid crystal panel 200 is high, and the second shape dot 102 located at both ends of the bottom surface passes through the light incident surface.
  • the shapes of the first shape mesh point 101 and the second shape mesh point 102 are not limited, but the second shape dot 102 to be ensured is reflected by the light incident on the light incident surface b to form a light intensity greater than that of the first shape dot 102.
  • the intensity of the light intensity formed by the reflection of the light incident from the light-incident surface b by a shape dot 101 is as shown in FIG. 3, the first shape dot 101 is a square shape, and the second shape dot 102 is a spherical shape.
  • the spherical surface has a large reflecting area, and the amount of light reflected to the light emitting surface a is the largest, and the side of the square corresponding to the light emitting surface a is a plane, and only the surface can reflect the light toward the light emitting surface a, and therefore, the square body reflects toward the light emitting surface.
  • the amount of light of a is relatively small compared to the spherical surface, that is, the amount of light that is finally incident on the liquid crystal panel 200 is relatively small.
  • the dot shape of the square shape corresponds to the central portion of the liquid crystal panel 200
  • the dot of the spherical shape corresponds to the middle sides of the liquid crystal panel 200.
  • the area of the liquid crystal panel 200 is illuminated by the light reflected by the light guide plate 100, and the brightness of the entire liquid crystal panel 200 is substantially uniform and relatively uniform.
  • the second light guiding regions 20 are symmetrically disposed on both sides of the first light guiding region 10.
  • the second light guiding area 20 located on the left and right sides may be connected to the first light guiding area 10 located in the middle portion or spaced apart, regardless of the situation, due to the second light guiding on the left and right sides.
  • the area of the area 20 is the same as that of the central area of the liquid crystal panel 200, so that the display brightness of the left side screen of the liquid crystal panel 200 and the corresponding right side screen can be made uniform, thereby improving the uniformity of the screen brightness of the liquid crystal panel 200 as a whole. Sex.
  • the second light guiding region 20 is disposed on the two sides of the first light guiding region 10 to ensure that the light guide plate 100 reflects the light toward the liquid crystal panel 200 to the greatest extent.
  • the display brightness of the entire liquid crystal panel 200 is made substantially uniform.
  • the third light guiding area 30 is disposed on the bottom surface of the light guiding plate 100 corresponding to the left end and the right end of the light guiding plate 100, and the third light guiding area 30 is provided.
  • the third light guiding region 30 includes a plurality of evenly arranged third shape dots 103, and the reflection of the third shape dot 103 The light intensity is less than the reflected light intensity of the second shape dot 102.
  • the light guide plate 100 is divided into five dot reflection regions, a first light guiding region 10, two second light guiding regions 20, and two third light guiding regions 30, in order to ensure that the light guiding plate 100 will light.
  • the display brightness of the entire liquid crystal panel 200 is substantially uniform. It should be noted that, since the light guide plate 100 is light entering the left end and the right end side, that is, the light of the light guide plate 100 near the left end and the right end is concentrated, and the brightness is large, so that after the dot passing through the area is reflected, The intensity of the light is also large.
  • the reflected light intensity of the region at the right end position is set by a dot having a weak reflected light intensity, for example, a linear dot as shown in FIG.
  • the third light guiding area 30 is symmetrically disposed with the first light guiding area 10 as an axis.
  • the display brightness of the entire liquid crystal panel 200 is substantially uniform, and the third light guiding region 30 and the second light guiding region 20 are opposite to each other. Pick up.
  • the meshes of different shapes may be implemented by the same process or different processes.
  • the first shape dot 101, the second shape dot 102, and the third shape dot 103 are laser processed. Or a printing process is provided on the bottom surface.
  • the present invention also provides a liquid crystal display device.
  • the liquid crystal display device includes the light guide plate 100, and the liquid crystal panel 200, the heat dissipation plate 300, the back plate 400, the light source 500, and the plastic frame.
  • the detailed structure of the light guide plate 100 can be referred to the above embodiment, and details are not described herein.
  • the light guide plate 100 is disposed on the back plate 400 and along the left end to the right end of the back plate 400. a curved curved arrangement, wherein the left end and the right end of the back plate 400 are reference directions to the left and right of the entire liquid crystal display device in FIG.
  • the heat dissipation plate 300 includes a bottom plate 310 and extends upward from four sides of the bottom plate 310
  • the side wall 320 is disposed on the bottom plate 310.
  • the light source 500 is disposed on the side wall 320 and faces the light incident surface a of the light guide plate 100.
  • the plastic frame 600 The liquid crystal panel 200 is disposed on the plastic frame 200 and is opposite to the position of the light-emitting surface a of the light guide plate 100.
  • the liquid crystal panel 200 is along the back plate 400.
  • the left end to the right end are curvedly curved, and the liquid crystal panel 200 and the light guide plate 100 are disposed. Same bending angle, bending direction and consistent.
  • the screen brightness outputted by the liquid crystal display device has high uniformity, and the display effect of the liquid crystal display device can be improved.
  • the liquid crystal display device further includes a reflective sheet 700, an optical film 800, and a front frame 900.
  • the reflective sheet 700 is disposed on a side of the back plate 400 opposite to the light guide plate 100, and the optical film 800 is disposed.
  • the light guide plate 100 is disposed between the light guide plate 100 and the liquid crystal panel 200, and is connected to the plastic frame 600.
  • the front frame 900 is disposed outside the plastic frame 600 and is fixedly connected to the plastic frame 600.
  • a card slot (not shown) for holding and fixing the liquid crystal panel 200 is formed between the plastic frame 600 and the plastic frame 600.

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  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Liquid Crystal (AREA)

Abstract

本发明公开了一种导光板，该导光板包括出光面、与出光面相对设置的底面以及连接出光面与底面的入光面，底面上至少划分有第一导光区和第二导光区，第一导光区排布有多个第一形状网点，第二导光区排布有多个第二形状网点，第一形状网点与第二形状网点对光的反射能力不同。本发明还公开了一种液晶显示装置。本发明解决了液晶面板输出的画面亮度出现局部明暗不均的技术问题，提高液晶显示装置的显示效果。

Description

导光板及液晶显示装置
技术领域
本发明涉及液晶显示终端技术领域，尤其涉及一种导光板及液晶显示装置。
背景技术
液晶面板是决定整个液晶显示器画面显示质量的重要部件之一，其直接影响到画面的观看效果，而现有的液晶面板存在难以避免的缺陷，例如，面板成型后，因局部光线穿透率不均，而出现显示画面明暗不一致的问题。另外，在曲面液晶显示器中，由于液晶面板的弯曲，也会使得面板的光线穿透率大大降低，尤其是面板左右两部分的区域比面板中间部分的区域降低的幅度较大，导致该液晶显示器输出的画面亮度出现左中右严重不均匀的问题。
发明内容
本发明的主要目的在于解决液晶面板显示的画面亮度出现局部不均匀的技术问题。
为实现上述目的，本发明提供一种导光板，其包括出光面、与所述出光面相对设置的底面以及连接所述出光面与所述底面的入光面，所述底面上至少划分有第一导光区和第二导光区，所述第一导光区排布有多个第一形状网点，所述第二导光区排布有多个第二形状网点，所述第一形状网点与第二形状网点对光的反射能力不同。
优选地，所述第一导光区位于所述底面的中部，所述第二导光区位于所述第一导光区与入光面之间；所述第二形状网点的反射光强大于所述第一形状网点的反射光强。
优选地，所述底面上设置有第三导光区，所述第三导光区设于所述入光面与所述第二导光区之间；所述第三导光区包括多个均匀排布的第三形状网点，所述第三形状网点的反射光强小于所述第二形状网点的反射光强。
优选地，所述第一形状网点及第二形状网点及第三形状网点采用镭射工艺或者印刷工艺设于所述底面上。
优选地，所述第一形状网点为正方体形状，所述第二形状网点为球形形状。
优选地，所述底面上设置有第三导光区，所述第三导光区设于所述入光面与所述第二导光区之间；所述第三导光区包括多个均匀排布的第三形状网点，所述第三形状网点的反射光强小于所述第二形状网点的反射光强。
优选地，所述第一形状网点及第二形状网点及第三形状网点采用镭射工艺或者印刷工艺设于所述底面上。
优选地，所述第二导光区对称设于所述第一导光区的两侧。
优选地，所述底面上设置有第三导光区，所述第三导光区设于所述入光面与所述第二导光区之间；所述第三导光区包括多个均匀排布的第三形状网点，所述第三形状网点的反射光强小于所述第二形状网点的反射光强。
优选地，所述第一形状网点及第二形状网点及第三形状网点采用镭射工艺或者印刷工艺设于所述底面上。
优选地，所述第三导光区以所述第一导光区为轴对称设置。
优选地，所述第三导光区与所述第二导光区相接。
优选地，所述导光板呈弯曲设置，使得所述出光面与所述底面为弧形面。
此外，为实现上述目的，本发明还提供一种液晶显示装置，所述液晶显示装置包括光源、导光板，以及液晶面板，所述导光板包括出光面、与所述出光面相对设置的底面以及连接所述出光面与所述底面的入光面，其特征在于：所述导光板的底面包括网点形状不同的多个区域，所述光源与所述导光板的入光面相对，所述液晶面板与所述导光板的出光面相对，所述光源发出的光线沿所述导光板传播并经所述导光板底面的网点反射后从出光面射出至所述液晶面板上，所述液晶面板沿所述光线的传播方向呈曲面设置，所述导光板的底面的网点形状不同的多个区域沿所述光线传播方向排布。
优选地，所述导光板具有相对设置的两个入光面，所述导光板的底面自中间向两入光面方向依次包括网点形状不同的第一导光区、第二导光区及第三导光区，所述第二导光区的网点对光线的反射能力最强，第一导光区的网点次之，第三导光区的网点对光线的反射能力最弱。
优选地，所述液晶显示装置还包括反射片、光学膜片和前框，所述反射片设于所述背板与所述导光板相对的一侧；所述光学膜片设于所述导光板与所述液晶面板之间，且与所述胶框连接固定，所述前框设于所述胶框的外侧，且与所述胶框连接固定，所述前框与所述胶框之间形成卡持固定所述液晶面板的卡槽。
本发明通过在导光板的底面上至少设置第一导光区和第二导光区，并在第一导光区上设置多个第一形状网点，在第二导光区上设置多个第二形状网点，且设置所述第一形状网点与第二形状网点对光的反射能力的强弱不同，以解决液晶面板局部穿透率不均而导致其显示画面明暗不均的问题，其中，针对液晶面板上光线穿透率较低的区域，在导光板上对应的位置设置反射光强较强的网点，而在液晶面板上光线穿透率较高的区域，在导光板上对应的位置设置反射光强较弱的网点，从而使得导光板将光线反射向液晶面板上后，最终使得整个液晶面板显示的画面亮度基本一致，进而提高了液晶显示装置显示画面的均匀性。
附图说明
图1为本发明导光板较佳实施例的结构示意图；
图2为图1的另一视角结构示意图；
图3为本发明导光板应用于液晶显示装置的结构示意图；
图4为图3中局部A的放大结构示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种导光板，该导光板适用于液晶显示装置，尤其适用于侧入式液晶显示装，例如侧入式液晶电视、侧入式液晶显示器。
应当说明的是，以下为了更好的阐述本发明的实施例，定义图3中箭头z两端的方向为整个液晶显示装置的左方和右方，也即光线的传播方向。
参照图1至图2，在一实施例中，所述导光板包括出光面a、与所述出光面a相对设置的底面以及连接所述出光面a与所述底面的入光面b，该入光面b可以是一个，也可以是多个，本实施例中优选为两个，且相对设置；所述底面上至少划分有第一导光区10和第二导光区20，所述第一导光区10排布有多个第一形状网点101，所述第二导光区20排布有多个第二形状网点102，所述第一形状网点101与第二形状网点102对光的反射能力不同。其中，第一形状网点101或者第二形状网点102的形状可以是球形形状、线性形状、正方体形状或者是其他多面体形状，例如六面体。在一实施例中所述导光板为平面板状。当然，在其他实施例中，所述导光板也可为弯曲设置。
本实施例的思想是针对液晶面板的局部穿透率不均而导致的显示画面明暗不一致的问题，应当理解的是，设置在底面上的导光区不局限于上述第一导光区10和第二导光区20，还可以设置更多，实际应用当中应根据液晶面板上各区域的光线穿透率的高低程度设置，具体地，在导光板100的底面上对应液晶面板上光线穿透率较低区域的位置设置较强反射光强的网点，在导光板100的底面上对应液晶面板上光线穿透率较高的区域的位置设置较弱反射光强的网点。需要注意的是，当导光板100射出的光线照射在液晶面板上，点亮液晶后，应保证整个液晶面板200的亮度均匀，且基本一致。该导光板100应用至侧入式液晶显示装置中的结构如图3和图4所示。其中L表示导光板100各区域反射出的光线路径。
本发明通过在导光板100的底面上至少设置第一导光区10和第二导光区20，并在第一导光区10上设置多个第一形状网点101，在第二导光区20上设置多个第二形状网点102，且设置所述第一形状网点101与第二形状网点102对光的反射能力的强弱不同，以解决液晶面板局部穿透率不均而导致其显示画面明暗不均的问题，其中，针对液晶面板上光线穿透率较低的区域，在导光板上对应的位置设置反射光强较强的网点，而在液晶面板上光线穿透率较高的区域，在导光板上对应的位置设置反射光强较弱的网点，从而使得导光板将光线反射向液晶面板上后，最终使得整个液晶面板显示的画面亮度基本一致，进而提高了液晶显示装置显示画面的均匀性。
需要说明的是，在曲面液晶显示器的设计中，可参照图3及图4，由于液晶面板弯曲后，整个面板的光线穿透率会大大降低，尤其是面板左右两部分的区域比面板中间部分的区域降低的幅度较大，以致该液晶显示器输出的画面亮度出现左中右严重不均匀的问题，鉴于此，参照图1至4以及基于上述实施例，在一优选实施例中，设置所述第一导光区10位于所述底面的中部，所述第二导光区20位于所述第一导光区10与入光面b之间；所述第二形状网点102的反射光强大于所述第一形状网点101的反射光强。易于理解的是，第一形状网点101将经由入光面b射入的光线反射向了液晶面板200光线穿透率较高的区域，而位于底面两端的第二形状网点102将经由入光面b射入的光线反射向了液晶面板200光线穿透率较低的区域，最终使得整个液晶面板200的左中右输出的画面亮度基本一致，提高了液晶显示器显示画面的均匀性。
可以理解的是，上述第一形状网点101和第二形状网点102的形状不作限制，但须保证的第二形状网点102将经由入光面b射入的光线反射后形成的光强强度大于第一形状网点101将经由入光面b射入的光线反射后形成的光强强度，如图3所示，所述第一形状网点101为正方体形状，所述第二形状网点102为球形形状。球面具有较大的反射面积，反射向出光面a的光线的数量最多，而正方体对应出光面a的一侧为平面，只有该面能够将光线反射向出光面a，因此，正方体反射向出光面a的光线数量相对球面较少，即最终射向液晶面板200的光线数量也相对较少。由于液晶面板200中部的光线穿透率较其两侧区域的穿透率较低，因此，采用正方体形状的网点对应液晶面板200的中部区域，采用球形形状的网点对应液晶面板200中部两侧的区域，会使得液晶面板200中部和两侧的液晶被导光板100反射的光线点亮后，整个液晶面板200的亮度会基本一致，且比较均匀。
进一步地，为了提高液晶面板200显示画面亮度的一致性，所述第二导光区20对称设于所述第一导光区10的两侧。
其中，位于左右两侧的第二导光区20可以是与位于中部的第一导光区10相接或者是间隔一定区域，而不管是哪种情况，由于位于左右两侧的第二导光区20的面积一样，且相对于液晶面板200中部区域的位置一样，从而能够使得液晶面板200左侧画面和对应的右侧画面的显示亮度一致，进而整体上提高液晶面板200显示画面亮度的一致性。当然，较佳的实施方式是，设置所述第二导光区20与所述第一导光区10的两侧相接，以最大的程度保证导光板100将光线反射向液晶面板200后，使整个液晶面板200的显示亮度基本一致。
基于上述实施例，进一步地，在本实施例中所述导光板100的底面上对应所述导光板100的左端和右端位置还设置有第三导光区30，所述第三导光区30设于所述入光面b与所述第二导光区20之间；所述第三导光区30包括多个均匀排布的第三形状网点103，所述第三形状网点103的反射光强小于所述第二形状网点102的反射光强。本实施例中将导光板100分成五个网点反射区域，一个第一导光区10，两个第二导光区20，两个第三导光区30，目的是为了保证导光板100将光线反射向液晶面板200后，使整个液晶面板200的显示亮度基本一致。需要说明的是，由于导光板100是左端和右端侧面入光，即导光板100靠近其左端和右端位置的区域的光线比较集中，且亮度较大，以致在经过该区域上的网点反射后，光的强度也较大，因此，为保证导光板100左端和右端反射的光线照亮液晶面板200对应的左右两端的区域后与液晶面板200其他区域的亮度一致，需要减弱该导光板100左端和右端位置的区域的反射光强，即设置反射光强较弱的网点来实现，例如，如图1所示的线形网点。
基于该实施例，进一步地，为了保证液晶面板200两端的光亮一致，所述第三导光区30以所述第一导光区10为轴对称设置。
更进一步地，为了最大程度的保证导光板100将光线反射向液晶面板200后，使整个液晶面板200的显示亮度基本一致，所述第三导光区30与所述第二导光区20相接。
此外，需要说明的是，上述不同形状的网点可以采用相同的工艺或者不同的工艺实现，本实施例中，所述第一形状网点101、第二形状网点102及第三形状网点103采用镭射工艺或者印刷工艺设于所述底面上。
本发明还提供一种液晶显示装置，参照图1至4，在一实施例中，该液晶显示装置包括上述导光板100，以及液晶面板200、散热板300、背板400、光源500、胶框600；所述导光板100的详细结构可参照上述实施例，此处不再赘述；其中，所述导光板100设于所述背板400上，且沿所述背板400的左端至右端呈弧形弯曲设置，其中，背板400的左端和右端以图3中整个液晶显示装置的左方和右方为参考方向；所述散热板300包括底板310和由所述底板310四侧向上延伸的侧壁320，所述背板400设于所述底板310上；所述光源500设于所述侧壁320上，且正对所述导光板100的入光面a；所述胶框600与所述侧壁320连接固定，所述液晶面板200设于所述胶框600上，且与所述导光板100的出光面a的位置正对；所述液晶面板200沿所述背板400的左端至右端呈弧形弯曲设置，所述液晶面板200与所述导光板100的弯曲角度一致，且弯曲方向一致。
由于在液晶显示装置中使用了上述导光板100，因此，该液晶显示装置输出的画面亮度具有较高的一致性，能够提高液晶显示装置的显示效果。
此外，上述液晶显示装置还包括反射片700、光学膜片800和前框900，所述反射片700设于所述背板400与所述导光板100相对的一侧，所述光学膜片800设于所述导光板100与所述液晶面板200之间，且与所述胶框600连接固定，所述前框900设于所述胶框600的外侧，与所述胶框600连接固定，并与所述胶框600之间形成卡持固定所述液晶面板200的卡槽（图未表示）。
以上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。

Claims (16)

  1. 一种导光板，其包括出光面、与所述出光面相对设置的底面以及连接所述出光面与所述底面的入光面，其特征在于，所述底面上至少划分有第一导光区和第二导光区，所述第一导光区排布有多个第一形状网点，所述第二导光区排布有多个第二形状网点，所述第一形状网点与第二形状网点对光的反射能力不同。
  2. 如权利要求1所述的导光板，其特征在于，所述第一导光区位于所述底面的中部，所述第二导光区位于所述第一导光区与入光面之间；所述第二形状网点的反射光强大于所述第一形状网点的反射光强。
  3. 如权利要求2所述的导光板，其特征在于，所述底面上设置有第三导光区，所述第三导光区设于所述入光面与所述第二导光区之间；所述第三导光区包括多个均匀排布的第三形状网点，所述第三形状网点的反射光强小于所述第二形状网点的反射光强。
  4. 如权利要求3所述的导光板，其特征在于，所述第一形状网点及第二形状网点及第三形状网点采用镭射工艺或者印刷工艺设于所述底面上。
  5. 如权利要求2所述的导光板，其特征在于，所述第一形状网点为正方体形状，所述第二形状网点为球形形状。
  6. 如权利要求5所述的导光板，其特征在于，所述底面上设置有第三导光区，所述第三导光区设于所述入光面与所述第二导光区之间；所述第三导光区包括多个均匀排布的第三形状网点，所述第三形状网点的反射光强小于所述第二形状网点的反射光强。
  7. 如权利要求6所述的导光板，其特征在于，所述第一形状网点及第二形状网点及第三形状网点采用镭射工艺或者印刷工艺设于所述底面上。
  8. 如权利要求2所述的导光板，其特征在于，所述第二导光区对称设于所述第一导光区的两侧。
  9. 如权利要求8所述的导光板，其特征在于，所述底面上设置有第三导光区，所述第三导光区设于所述入光面与所述第二导光区之间；所述第三导光区包括多个均匀排布的第三形状网点，所述第三形状网点的反射光强小于所述第二形状网点的反射光强。
  10. 如权利要求9所述的导光板，其特征在于，所述第一形状网点及第二形状网点及第三形状网点采用镭射工艺或者印刷工艺设于所述底面上。
  11. 如权利要求9所述的导光板，其特征在于，所述第三导光区以所述第一导光区为轴对称设置。
  12. 如权利要求11所述的导光板，其特征在于，所述第三导光区与所述第二导光区相接。
  13. 如权利要求1所述的导光板，其特征在于，所述导光板呈弯曲设置，使得所述出光面与所述底面为弧形面。
  14. 一种液晶显示装置，包括光源、导光板，以及液晶面板，所述导光板包括出光面、与所述出光面相对设置的底面以及连接所述出光面与所述底面的入光面，其特征在于：所述导光板的底面包括网点形状不同的多个区域，所述光源与所述导光板的入光面相对，所述液晶面板与所述导光板的出光面相对，所述光源发出的光线沿所述导光板传播并经所述导光板底面的网点反射后从出光面射出至所述液晶面板上，所述液晶面板沿所述光线的传播方向呈曲面设置，所述导光板的底面的网点形状不同的多个区域沿所述光线传播方向排布。
  15. 如权利要求14所述的液晶显示装置，其特征在于，所述导光板具有相对设置的两个入光面，所述导光板的底面自中间向两入光面方向依次包括网点形状不同的第一导光区、第二导光区及第三导光区，所述第二导光区的网点对光线的反射能力最强，第一导光区的网点次之，第三导光区的网点对光线的反射能力最弱。
  16. 如权利要求15所述的液晶显示装置，其特征在于，所述液晶显示装置还包括反射片、光学膜片和前框，所述反射片设于所述背板与所述导光板相对的一侧；所述光学膜片设于所述导光板与所述液晶面板之间，且与所述胶框连接固定，所述前框设于所述胶框的外侧，且与所述胶框连接固定，所述前框与所述胶框之间形成卡持固定所述液晶面板的卡槽。
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CN113866864A (zh) * 2021-10-18 2021-12-31 扬昕科技(苏州)有限公司 导光板及显示装置
CN113866864B (zh) * 2021-10-18 2024-05-28 扬昕科技(苏州)有限公司 导光板及显示装置

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