WO2017024592A1 - 导光板及具有该导光板的背光模块 - Google Patents

导光板及具有该导光板的背光模块 Download PDF

Info

Publication number
WO2017024592A1
WO2017024592A1 PCT/CN2015/086897 CN2015086897W WO2017024592A1 WO 2017024592 A1 WO2017024592 A1 WO 2017024592A1 CN 2015086897 W CN2015086897 W CN 2015086897W WO 2017024592 A1 WO2017024592 A1 WO 2017024592A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaped structure
light guide
guide plate
bumps
vertical
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2015/086897
Other languages
English (en)
French (fr)
Inventor
张彦学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
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 Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US14/778,264 priority Critical patent/US9817171B2/en
Publication of WO2017024592A1 publication Critical patent/WO2017024592A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular to a light guide plate and a backlight module having the same.
  • Liquid crystal displays due to their small size, light weight and uniform brightness, are widely used in notebook computers, car displays, mobile phones and other fields.
  • the backlight module of a liquid crystal display is an optical mechanism capable of converting a scattered point source or a line source into a uniform surface source.
  • the proportion of large screen and high screen has become one of the important trends.
  • an increase in the proportion of the high screen means that the distance between the light source and the visible area in the backlight module is reduced, which causes a serious light and dark unevenness (Hotspot) phenomenon on the light incident side of the backlight module.
  • Hotspot light and dark unevenness
  • an object of the present invention is to provide a light guide plate comprising a flat body and a wedge body extending upward along one end of the flat body, a top surface (12) of the flat body and the The inclined surface of the wedge body smoothly engages, wherein the inclined surface has a first inclined V-shaped structure arranged at intervals, the top surface having a first vertical V-shaped structure.
  • the first inclined V-shaped structure includes a plurality of first protrusions extending in a first direction and a plurality of second protrusions extending in a second direction, wherein the first direction and the second direction The directions intersect.
  • first vertical V-shaped structure includes third protrusions that are spaced apart and extend in a third direction, the third direction intersecting both the first direction and the second direction.
  • a third bump opposite to the spacer between the first inclined V-shaped structures extends to the spacer.
  • the space between the first inclined V-shaped structures has a plurality of second dots.
  • the bottom surface of the wedge body has a second inclined V-shaped structure arranged at intervals, and the bottom surface of the flat body has a second vertical V-shaped structure.
  • the second inclined V-shaped structure includes a plurality of fourth bumps extending in the first direction and a plurality of fifth bumps extending in the second direction, wherein the first direction and the second The directions intersect.
  • the second vertical V-shaped structure includes sixth bumps arranged in a spaced apart manner and extending in a third direction, the third direction intersecting both the first direction and the second direction.
  • the spacer between the second inclined V-shaped structures has a plurality of first dots.
  • Another object of the present invention is to provide a backlight module having the above-described light guide plate.
  • the invention has the beneficial effects that the first inclined V-shaped structure is disposed on the inclined surface, and the second inclined V-shaped structure is disposed on the first surface of the reflective surface, and the light source is disposed on the corresponding two first inclined V-shaped structures
  • the first spacer (or the second spacer) between (or the corresponding two second V-shaped structures) is opposite each other such that the light emitted by the light source can be first tilted V-shaped and second tilted V-shaped
  • the structure is homogenized; at the same time, a black ink dot is disposed in the second spacer between the second V-shaped structures, and the brightness of the light in the front surface of the light source can be reduced. With such a design, it is possible to eliminate the phenomenon of uneven brightness and darkness appearing on the inclined surface.
  • FIG. 1 is a partial perspective view of a light guide plate in accordance with an embodiment of the present invention.
  • FIG. 2 is a top plan view of a light guide plate in accordance with an embodiment of the present invention.
  • Figure 3 is a bottom plan view of a light guide plate in accordance with an embodiment of the present invention.
  • FIG. 4 is a partial perspective view of a light guide plate according to another embodiment of the present invention.
  • Figure 5 is a plan view of a light guide plate according to another embodiment of the present invention.
  • FIG. 6 is a top plan view of a side-lit backlight module in accordance with an embodiment of the present invention.
  • FIG. 7 is a schematic structural view of a liquid crystal display according to an embodiment of the present invention.
  • 1 is a partial perspective view of a light guide plate in accordance with an embodiment of the present invention.
  • 2 is a top plan view of a light guide plate in accordance with an embodiment of the present invention.
  • a light guide plate 10 has a wedge shape.
  • the light guide plate 10 includes a flat body 10a and a wedge body 10b extending upward along one end of the flat body 10a.
  • the thick end surface of the wedge body 10b is a light incident surface 11a, and the thin end surface and the flat surface of the wedge body 10b Smooth engagement of the body 10a.
  • the upper surface of the flat body 10a is the light-emitting surface 12, and the inclined surface 11b of the wedge-shaped body 10b is engaged with the upper surface of the flat body 10a (i.e., the light-emitting surface 12), and the inclined surface 11b of the wedge-shaped body 10b is formed with a first inclined V-shaped arrangement.
  • the structure forms a first vertical V-shaped structure on the light-emitting surface 12.
  • the light guide plate 10 may be made of a synthetic light guide material such as polycarbonate (PC), polymethyl methacrylate (PMMA) or acrylic.
  • PC polycarbonate
  • PMMA polymethyl methacrylate
  • acrylic acrylic
  • the first inclined V-shaped structure formed on the inclined surface 11b is composed of a plurality of first bumps 1211 extending in the first direction and a plurality of second bumps 1212 extending in the second direction. Wherein the first direction intersects the second direction. It should be noted that the angle between the first direction and the normal direction of the light incident surface 11 is an acute angle, and the angle between the second direction and the normal direction of the light incident surface 11 is an acute angle.
  • an angle between the first direction and the normal direction of the light incident surface 11 and an angle between the second direction and the normal direction of the light incident surface 11 are equal; that is, the first direction and the second direction are light.
  • the normal direction of the face 11 is axisymmetric.
  • the first vertical V-shaped structure formed on the light-emitting surface 12 is composed of third protrusions 1221 arranged in a spaced apart manner and extending in the third direction, wherein the third direction and the light-incident surface 11 are formed.
  • the normal direction is parallel.
  • the third bumps 1221 opposed to the first spacers 11c formed between the first inclined V-shaped structures on the inclined faces 11b extend to the first spacers 11c.
  • FIG 3 is a bottom view of a light guide plate in accordance with an embodiment of the present invention.
  • the light guide plate 10 of the present embodiment further has a reflective surface 13 including a first surface 131 connected to the light surface 11 and a second surface 132 connected to the first surface 131.
  • the first surface 131 is formed.
  • a second inclined V-shaped structure is arranged at intervals, and a second vertical V-shaped structure is formed on the second surface 132.
  • the first surface 131 is the bottom surface of the wedge body 10b
  • the second surface 132 is the bottom surface of the flat body 10a. That is, from a spatial perspective, when the light guide plate 10 of the present embodiment is viewed from above or viewed upward, the first surface 131 overlaps the inclined surface 11b, and the second surface 132 overlaps with the light exit surface 12. In FIG. 3, the first surface 131 and the second surface 132 are separated by a broken line.
  • the second inclined V-shaped structure formed on the first surface 131 is composed of a plurality of fourth bumps 1311 extending in the first direction and a plurality of fifth bumps 1312 extending in the second direction.
  • the second vertical V-shaped structure formed on the second surface 132 is constituted by sixth bumps 1321 which are spaced apart and extend in the third direction.
  • the second spacer 131a formed between the second inclined V-shaped structures of the first surface 131 has a plurality of first dots 1313a.
  • the first halftone dot 1313a may be, for example, a black ink dot, but the present invention is not limited thereto.
  • the first spacer region 11c and the second spacer region 131a are overlapped, and the first inclined V-shaped structure corresponds to the installation position of the second oblique V-shaped structure.
  • the first inclined V-shaped structure corresponds to the set position of the second inclined V-shaped structure
  • the first vertical V-shaped structure corresponds to the set position of the second vertical V-shaped structure
  • the present invention is not limited thereto, and for example, their setting positions may not correspond.
  • FIG. 4 is a partial perspective view of a light guide plate according to another embodiment of the present invention
  • FIG. 5 is a plan view of a light guide plate according to another embodiment of the present invention. Only the differences between the light guide plate of another embodiment of the present invention and the light guide plate shown in FIGS. 1 to 3 will be described below, and their similarities will not be described herein.
  • the structure of the light guide plate 10 according to another embodiment of the present invention is different from that of the light guide plate 10 shown in FIGS. 1 to 3 in that, in another embodiment of the present invention,
  • the first spacers 11c between the first inclined V-shaped structures on the inclined faces 11b are formed with a plurality of second dots 1313b.
  • the second halftone dot 1313b may be, for example, a black ink dot, but the invention is not limited thereto.
  • FIG. 6 is a top plan view of a side-lit backlight module in accordance with an embodiment of the present invention.
  • a side-lit backlight module 1 includes: a light guide plate 10 shown in FIGS. 1 to 3 and a plurality of light sources 20, each of which is in close contact with the light surface 11 and correspondingly located at two Between the first inclined V-shaped structures. Further, each of the light sources 20 is opposite to the first spacers 11c (or the second spacers 131a) between the corresponding two first inclined V-shaped structures (or the corresponding two second V-shaped structures). It should be understood that in the side-entry backlight module 1 according to the embodiment of the present invention, the light guide plate 10 shown in FIGS. 1 to 3 can also be replaced with the light guide plate 10 shown in FIGS. 4 to 5.
  • the side-lit backlight module according to the embodiment of the present invention should also include other necessary optical mechanisms such as a back frame, a plastic frame, an optical film, etc., since these optical mechanisms are all disclosed in the prior art, It will not be described here to avoid repeating.
  • the light source 20 may be a point light source such as a light emitting diode (LED).
  • the light emitted by the light source 20 enters the light guide plate 10 through the light incident surface 11 and is converted into a surface light source to be emitted from the light exit surface 12.
  • LED light emitting diode
  • a first inclined V-shaped structure is disposed on the inclined surface 11b, and a second inclined V-shaped structure is disposed on the first surface 131 of the reflective surface 13, and the light source 20 is disposed at the corresponding two first tilts
  • the first spacers 11c (or the second spacers 131a) between the V-shaped structures (or the corresponding two second V-shaped structures) are opposite each other such that the light emitted from the light source 20 can be tilted by the first V.
  • the type structure and the second inclined V-shaped structure are homogenized; at the same time, a black ink dot is disposed in the second spacer 131a between the second V-shaped structures, and the brightness of the light in the front surface of the light source 20 can be reduced. With the above design, the phenomenon of uneven brightness and darkness appearing on the inclined surface 11b can be eliminated.
  • FIG. 7 is a schematic structural view of a liquid crystal display according to an embodiment of the present invention.
  • a liquid crystal display according to an embodiment of the present invention includes a liquid crystal panel 2 disposed opposite to each other and an edge-lit backlight module 1 illustrated in FIG. 6, wherein the side-lit backlight module 1 provides a display light source to the liquid crystal panel 2 to The liquid crystal panel 2 is caused to display an image.
  • the specific structure of the liquid crystal panel 2 will not be described in detail herein, and those skilled in the art can refer to the specific structure of the liquid crystal panel disclosed in the prior art.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

一种导光板（10），包括平板体（10a）及沿平板体（10a）一端向上延伸的楔形体（10b），平板体（10a）的顶表面与楔形体（10b）的倾斜面顺滑衔接，其中，倾斜面具有间隔排列的第一倾斜V型结构，顶表面具有第一垂直V型结构。还提供了一种具有该导光板（10）的背光模块。当光源（20）设置在对应的两个第一倾斜V型结构(或者对应的两个第二V型结构)之间的第一间隔区(或者第二间隔区)正相对处时，光源（20）出射的光线能够被第一倾斜V型结构和第二倾斜V型结构均匀化，通过这样的设计方案，能够消除倾斜面上出现的亮暗不均的现象。

Description

导光板及具有该导光板的背光模块 技术领域
本发明属于液晶显示技术领域，具体地讲，涉及一种导光板及具有该导光板的背光模块。
背景技术
液晶显示器，由于体积小、重量轻且亮度均匀，因此在笔记本电脑、车载显示器、手机等领域有着广泛的应用。
液晶显示器的背光模块是一个能够将分散点光源或者线光源转化成均匀面光源的光学机构。随着液晶显示器技术的发展，大屏幕、高屏占比成为了重要趋势之一。在液晶显示器中，高屏占比的提高意味着背光模块中的光源和可视区的距离减小，这样将会导致背光模块的入光侧出现严重的亮暗不均(Hotspot)现象。
发明内容
为了解决上述现有技术存在的问题，本发明的目的在于提供一种导光板，包括平板体及沿所述平板体一端向上延伸的楔形体，所述平板体的顶表面(12)与所述楔形体的倾斜面顺滑衔接，其中，所述倾斜面具有间隔排列的第一倾斜V型结构，所述顶表面具有第一垂直V型结构。
进一步地，所述第一倾斜V型结构包括多个沿第一方向延伸的第一凸块以及多个沿第二方向延伸的第二凸块，其中，所述第一方向与所述第二方向相交。
进一步地，所述第一垂直V型结构包括间隔排列的且沿第三方向延伸的第三凸块，所述第三方向与第一方向和第二方向均相交。
进一步地，与所述第一倾斜V型结构之间的间隔区相对的第三凸块延伸至所述间隔区。
进一步地，所述第一倾斜V型结构之间的间隔区具有若干第二网点。
进一步地，所述楔形体的底表面具有间隔排列的第二倾斜V型结构，所述平板体的底表面具有第二垂直V型结构。
进一步地，所述第二倾斜V型结构包括多个沿第一方向延伸的第四凸块以及多个沿第二方向延伸的第五凸块，其中，所述第一方向与所述第二方向相交。
进一步地，所述第二垂直V型结构包括间隔排列的且沿第三方向延伸的第六凸块，所述第三方向与第一方向和第二方向均相交。
进一步地，所述第二倾斜V型结构之间的间隔区具有若干第一网点。
本发明的另一目的还在于提供一种具有上述导光板的背光模块。
本发明的有益效果：本发明在倾斜面上设置第一倾斜V型结构，并在反射面的第一表面上设置第二倾斜V型结构，光源设置在对应的两个第一倾斜V型结构(或者对应的两个第二V型结构)之间的第一间隔区(或者第二间隔区)正相对处，这样，光源出射的光线能够被第一倾斜V型结构和第二倾斜V型结构均匀化；同时在第二V型结构之间的第二间隔区设置黑色油墨网点，能够对光源的发光正面区域的光线亮度进行降低。通过这样的设计方案，能够消除倾斜面上出现的亮暗不均的现象。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1是根据本发明的实施例的导光板的局部立体图；
图2是根据本发明的实施例的导光板的俯视图；
图3是根据本发明的实施例的导光板的仰视图；
图4是根据本发明的另一实施例的导光板的局部立体图；
图5是根据本发明的另一实施例的导光板的俯视图；
图6是根据本发明的实施例的侧入式背光模块的俯视图；
图7是根据本发明的实施例的液晶显示器的结构示意图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。
在附图中，为了清楚器件，夸大了层和区域的厚度。相同的标号在整个说明书和附图中可用来表示相同的元件。
将理解的是，尽管在这里可使用术语“第一”、“第二”等来描述各种元件，但是这些元件不应受这些术语的限制。这些术语仅用于将一个元件与另一个元件区分开来。
图1是根据本发明的实施例的导光板的局部立体图。图2是根据本发明的实施例的导光板的俯视图。
参照图1和图2，根据本发明的实施例的导光板10呈楔形状。具体地，导光板10包括平板体10a及沿该平板体10a一端向上延伸的楔形体10b；其中，该楔形体10b较厚的端面为入光面11a，该楔形体10b较薄的端面与平板体10a的平滑衔接。平板体10a的上表面为出光面12，楔形体10b的倾斜面11b与平板体10a的上表面(即出光面12)衔接，楔形体10b的倾斜面11b上形成间隔排列的第一倾斜V型结构，出光面12上形成第一垂直V型结构。
在本实施例中，导光板10可以由聚碳酸酯(PC)、聚甲基丙烯酸甲酯(PMMA)或者亚克力等一般的导光板材料合成树脂材料制成。
继续参照图1和图2，形成在倾斜面11b上的第一倾斜V型结构由多个沿第一方向延伸的第一凸块1211以及多个沿第二方向延伸的第二凸块1212构成，其中，第一方向与第二方向相交。需要说明的是，第一方向与入光面11的法线方向的夹角为锐角，第二方向与入光面11的法线方向的夹角为锐角。
进一步地，第一方向与入光面11的法线方向的夹角和第二方向与入光面11的法线方向的夹角相等；也就是说，第一方向和第二方向以入光面11的法线方向轴对称。
继续参照图1和图2，形成在出光面12上的第一垂直V型结构是由间隔排列的且沿第三方向延伸的第三凸块1221构成，其中，第三方向与入光面11的法线方向平行。
更进一步地，与形成在倾斜面11b上的第一倾斜V型结构之间的第一间隔区11c相对的第三凸块1221延伸至该第一间隔区11c。
图3是根据本发明的实施例的导光板的仰视图。
参照图3，本实施例的导光板10还具有反射面13，反射面13包括连接入光面11的第一表面131以及与第一表面131连接的第二表面132，第一表面131上形成间隔排列的第二倾斜V型结构，第二表面132上形成第二垂直V型结构。
在本实施例中，第一表面131为楔形体10b的底表面，第二表面132为平板体10a的底表面。也就是说，从空间上看，在俯视或仰视本实施的导光板10时，第一表面131与倾斜面11b重合，第二表面132与出光面12重合。在图3中，第一表面131与第二面132以虚线作为划分界线。
形成在第一表面131上的第二倾斜V型结构由多个沿第一方向延伸的第四凸块1311以及多个沿第二方向延伸的第五凸块1312构成。
形成在第二表面132上的第二垂直V型结构是由间隔排列的且沿第三方向延伸的第六凸块1321构成。
更进一步地，形成在第一表面131的第二倾斜V型结构之间的第二间隔区131a具有若干第一网点1313a。在本实施例中，第一网点1313a可例如是黑色油墨网点，但本发明并不限制于此。此外，从空间上看，在俯视或仰视本实施的导光板10时，第一间隔区11c和第二间隔区131a重合，第一倾斜V型结构与第二倾斜V型结构的设置位置对应，第一倾斜V型结构与第二倾斜V型结构的设置位置对应，第一垂直V型结构与第二垂直V型结构的设置位置对应， 但本发明并不限制于此，例如，它们的设置位置不对应也可。
作为本发明的另一实施方式，图4是根据本发明的另一实施例的导光板的局部立体图；图5是根据本发明的另一实施例的导光板的俯视图。以下仅描述本发明的另一实施例的导光板与图1至图3所示的导光板的不同之处，它们的相同之处在此不再赘述。
参照图4和图5，根据本发明的另一实施例的导光板10与图1至图3所示的导光板10的结构不同之处在于：在本发明的另一实施例中，形成在倾斜面11b上的第一倾斜V型结构之间的第一间隔区11c形成有若干第二网点1313b。在本发明的另一实施例中，第二网点1313b可例如是黑色油墨网点，但本发明并不限制于此。
图6是根据本发明的实施例的侧入式背光模块的俯视图。
参照图6，根据本发明的实施例的侧入式背光模块1包括：图1至图3所示的导光板10以及若干光源20，每个光源20紧贴入光面11且对应位于两个第一倾斜V型结构之间。进一步地，每个光源20与对应的两个第一倾斜V型结构(或者对应的两个第二V型结构)之间的第一间隔区11c(或者第二间隔区131a)正相对。应当理解的是，在根据本发明的实施例的侧入式背光模块1中，也可将图1至图3所示的导光板10更换为图4至图5所示的导光板10。
应当说明的是，根据本发明的实施例的侧入式背光模块还应当包括背框、胶框、光学膜片等其他必要的光学机构，由于这些光学机构均在现有技术中被揭示，因此这里就不再描述，以避免赘述。
此外，在本实施例中，光源20可以是点光源，例如发光二极管(LED)。光源20发光的光线通过入光面11进入导光板10中，进而转换成面光源从出光面12出射。
根据本发明的实施例，在倾斜面11b上设置第一倾斜V型结构，并在反射面13的第一表面131上设置第二倾斜V型结构，光源20设置在对应的两个第一倾斜V型结构(或者对应的两个第二V型结构)之间的第一间隔区11c(或者第二间隔区131a)正相对处，这样，光源20出射的光线能够被第一倾斜V 型结构和第二倾斜V型结构均匀化；同时在第二V型结构之间的第二间隔区131a设置黑色油墨网点，能够对光源20的发光正面区域的光线亮度进行降低。通过以上的设计方案，能够消除倾斜面11b上出现的亮暗不均的现象。
图7是根据本发明的实施例的液晶显示器的结构示意图。
参照图7，根据本发明的实施例的液晶显示器包括相对设置的液晶面板2和图6所示的侧入式背光模块1，其中，侧入式背光模块1提供显示光源给液晶面板2，以使该液晶面板2显示影像。在本实施例中，为了避免赘述，液晶面板2的具体结构在此不再详细描述，本领域的技术人员可参照现有技术中公开的液晶面板的具体结构。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (20)

  1. 一种导光板，包括平板体及沿所述平板体一端向上延伸的楔形体，所述平板体的顶表面与所述楔形体的倾斜面顺滑衔接，其中，所述倾斜面具有间隔排列的第一倾斜V型结构，所述顶表面具有第一垂直V型结构；
    所述第一倾斜V型结构包括多个沿第一方向延伸的第一凸块以及多个沿第二方向延伸的第二凸块；
    所述第一垂直V型结构包括间隔排列的且沿第三方向延伸的第三凸块；
    其中，所述第一方向和所述第二方向以所述第三方向轴对称。
  2. 根据权利要求1所述的导光板，其中，与所述第一倾斜V型结构之间的间隔区相对的第三凸块延伸至所述间隔区。
  3. 根据权利要求1所述的导光板，其中，所述第一倾斜V型结构之间的间隔区具有若干第二网点。
  4. 根据权利要求1所述的导光板，其中，所述楔形体的底表面具有间隔排列的第二倾斜V型结构，所述平板体的底表面具有第二垂直V型结构。
  5. 根据权利要求4所述的导光板，其中，所述第二倾斜V型结构包括多个沿第一方向延伸的第四凸块以及多个沿第二方向延伸的第五凸块。
  6. 根据权利要求4所述的导光板，其中，所述第二垂直V型结构包括间隔排列的且沿第三方向延伸的第六凸块。
  7. 根据权利要求4所述的导光板，其中，所述第二倾斜V型结构之间的间隔区具有若干第一网点。
  8. 一种导光板，包括平板体及沿所述平板体一端向上延伸的楔形体，所述平板体的顶表面与所述楔形体的倾斜面顺滑衔接，其中，所述倾斜面具有间隔排列的第一倾斜V型结构，所述顶表面具有第一垂直V型结构。
  9. 根据权利要求8所述的导光板，其中，所述第一倾斜V型结构包括多个沿第一方向延伸的第一凸块以及多个沿第二方向延伸的第二凸块，所述第一方向与所述第二方向相交。
  10. 根据权利要求9所述的导光板，其中，所述第一垂直V型结构包括间隔排列的且沿第三方向延伸的第三凸块，所述第三方向经过所述第一方向和所述第二方向的交点。
  11. 根据权利要求10所述的导光板，其中，与所述第一倾斜V型结构之间的间隔区相对的第三凸块延伸至所述间隔区。
  12. 根据权利要求8所述的导光板，其中，所述第一倾斜V型结构之间的间隔区具有若干第二网点。
  13. 根据权利要求8所述的导光板，其中，所述楔形体的底表面具有间隔排列的第二倾斜V型结构，所述平板体的底表面具有第二垂直V型结构。
  14. 根据权利要求13所述的导光板，其中，所述第二倾斜V型结构包括多个沿第一方向延伸的第四凸块以及多个沿第二方向延伸的第五凸块，其中，所述第一方向与所述第二方向相交。
  15. 根据权利要求14所述的导光板，其中，所述第二垂直V型结构包括间隔排列的且沿第三方向延伸的第六凸块，所述第三方向经过所述第一方向和所述第二方向的交点。
  16. 根据权利要求13所述的导光板，其中，所述第二倾斜V型结构之间的间隔区具有若干第一网点。
  17. 一种背光模块，包括导光板以及光源，所述导光板包括平板体及沿所述平板体一端向上延伸的楔形体，所述光源紧贴所述楔形体的较厚的端面设置，所述平板体的顶表面与所述楔形体的倾斜面顺滑衔接，其中，所述倾斜面具有间隔排列的第一倾斜V型结构，所述顶表面具有第一垂直V型结构；
    所述第一倾斜V型结构包括多个沿第一方向延伸的第一凸块以及多个沿第二方向延伸的第二凸块；
    所述第一垂直V型结构包括间隔排列的且沿第三方向延伸的第三凸块；
    所述楔形体的底表面具有间隔排列的第二倾斜V型结构，所述平板体的底表面具有第二垂直V型结构；
    所述第二倾斜V型结构包括多个沿第一方向延伸的第四凸块以及多个沿第二方向延伸的第五凸块；
    所述第二垂直V型结构包括间隔排列的且沿第三方向延伸的第六凸块；
    其中，所述第一方向和所述第二方向以所述第三方向轴对称。
  18. 根据权利要求17所述的背光模块，其中，与所述第一倾斜V型结构之间的间隔区相对的第三凸块延伸至所述间隔区。
  19. 根据权利要求17所述的背光模块，其中，所述第一倾斜V型结构之间的间隔区具有若干第二网点。
  20. 根据权利要求17所述的背光模块，其中，所述第二倾斜V型结构之间的间隔区具有若干第一网点。
PCT/CN2015/086897 2015-08-07 2015-08-13 导光板及具有该导光板的背光模块 Ceased WO2017024592A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/778,264 US9817171B2 (en) 2015-08-07 2015-08-13 Light guide plat and backlight module having the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510483938.8 2015-08-07
CN201510483938.8A CN105093388A (zh) 2015-08-07 2015-08-07 导光板及具有该导光板的背光模块

Publications (1)

Publication Number Publication Date
WO2017024592A1 true WO2017024592A1 (zh) 2017-02-16

Family

ID=54574232

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/086897 Ceased WO2017024592A1 (zh) 2015-08-07 2015-08-13 导光板及具有该导光板的背光模块

Country Status (3)

Country Link
US (1) US9817171B2 (zh)
CN (1) CN105093388A (zh)
WO (1) WO2017024592A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1743912A (zh) * 2004-09-02 2006-03-08 清华大学 导光板和背光模组
CN102900996A (zh) * 2011-07-28 2013-01-30 鸿富锦精密工业（深圳）有限公司 导光板和背光模组
US20140176875A1 (en) * 2012-12-26 2014-06-26 Omron Corporation Light guide plate and surface light source device
CN103901528A (zh) * 2012-12-26 2014-07-02 欧姆龙株式会社 面光源装置及其导光板
JP2014130748A (ja) * 2012-12-28 2014-07-10 Omron Corp 導光板及び面光源装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM317024U (en) * 2006-07-25 2007-08-11 Longtech Systems Corp Brightness improved structure of lateral backlight for LCD
JP2009199866A (ja) * 2008-02-21 2009-09-03 Hitachi Displays Ltd 液晶表示装置
JP5088417B2 (ja) * 2008-12-16 2012-12-05 オムロン株式会社 面光源装置
KR101676870B1 (ko) * 2009-07-31 2016-11-16 엘지전자 주식회사 백라이트 유닛 및 그를 이용한 디스플레이 장치
TWI461797B (zh) * 2011-11-10 2014-11-21 Au Optronics Corp 背光模組
JP5556837B2 (ja) * 2012-03-15 2014-07-23 オムロン株式会社 面光源装置及び液晶表示装置
JP5532109B2 (ja) * 2012-11-15 2014-06-25 オムロン株式会社 導光板及び面光源装置
JP5862557B2 (ja) * 2012-12-26 2016-02-16 オムロン株式会社 導光板及び面光源装置
CN104749687B (zh) * 2015-04-14 2017-12-12 武汉华星光电技术有限公司 导光板及背光模组

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1743912A (zh) * 2004-09-02 2006-03-08 清华大学 导光板和背光模组
CN102900996A (zh) * 2011-07-28 2013-01-30 鸿富锦精密工业（深圳）有限公司 导光板和背光模组
US20140176875A1 (en) * 2012-12-26 2014-06-26 Omron Corporation Light guide plate and surface light source device
CN103901528A (zh) * 2012-12-26 2014-07-02 欧姆龙株式会社 面光源装置及其导光板
JP2014130748A (ja) * 2012-12-28 2014-07-10 Omron Corp 導光板及び面光源装置

Also Published As

Publication number Publication date
US20170038516A1 (en) 2017-02-09
US9817171B2 (en) 2017-11-14
CN105093388A (zh) 2015-11-25

Similar Documents

Publication Publication Date Title
US20220113591A1 (en) Diffusion plate and backlight module
CN107993577B (zh) 视频墙显示装置
CN105276444B (zh) 曲面背光单元以及包括该曲面背光单元的曲面显示装置
US20180267344A1 (en) Backlight module, display device and driving method thereof
JP4600218B2 (ja) 面光源及び液晶表示装置
CN102109633B (zh) 区域性点亮侧光式导光板及区域性点亮侧光式背光模块
WO2019085629A1 (zh) 液晶显示装置及其背光模组
US10782457B2 (en) Grating for dual vision display and dual vision display apparatus
WO2017054382A1 (zh) 光学元件、导光板、棱镜、背光模组及显示装置
KR102555999B1 (ko) 표시 장치
CN104765097A (zh) 一种导光结构、背光模组和显示装置
WO2016183901A1 (zh) 导光板及背光模组
KR102090457B1 (ko) 액정표시장치
CN104808279A (zh) 导光模块与具有导光模块的双稳态显示装置
WO2016127442A1 (zh) 背光模组及包含其的液晶显示装置
CN100427975C (zh) 背光模块及所使用的扩散板结构
US20170059764A1 (en) Light guide plate, backlight unit and display device
US20140313772A1 (en) Illumination device, and display device provided therewith
JP2010108601A (ja) 面状光源及び液晶表示装置
WO2019184810A1 (zh) 液晶显示面板、液晶显示装置及其灰阶控制方法
WO2016106854A1 (zh) 导光板及具有该导光板的背光模块
KR102355828B1 (ko) 다중 패널 표시장치
KR20120068498A (ko) 도광판, 이를 구비한 백라이트 유닛 및 이들을 포함하는 액정표시장치
KR102355821B1 (ko) 다중 패널 표시장치
US20170090097A1 (en) Light guide plate and back light unit and liquid crystal display having the light guide plate

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14778264

Country of ref document: US

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

Ref document number: 15900790

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: 15900790

Country of ref document: EP

Kind code of ref document: A1