WO2017059730A1 - 侧入式导光板、背光模组及其制作方法和显示装置 - Google Patents

侧入式导光板、背光模组及其制作方法和显示装置 Download PDF

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Publication number
WO2017059730A1
WO2017059730A1 PCT/CN2016/093609 CN2016093609W WO2017059730A1 WO 2017059730 A1 WO2017059730 A1 WO 2017059730A1 CN 2016093609 W CN2016093609 W CN 2016093609W WO 2017059730 A1 WO2017059730 A1 WO 2017059730A1
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Prior art keywords
guide plate
light guide
light
groove
backlight module
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PCT/CN2016/093609
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English (en)
French (fr)
Inventor
汪志强
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京东方科技集团股份有限公司
京东方光科技有限公司
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Application filed by 京东方科技集团股份有限公司, 京东方光科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/504,964 priority Critical patent/US20170276862A1/en
Publication of WO2017059730A1 publication Critical patent/WO2017059730A1/zh

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    • 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
    • G02B6/0013—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
    • 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
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]

Definitions

  • the structure of a conventional edge-lit liquid crystal display backlight module includes a light guide plate 100 and a light-emitting diode (LED) light bar 200 disposed on one side of the light guide plate 100.
  • a plurality of LEDs 210 are disposed on a side of the LED light bar 200 facing the light guide plate 100.
  • the light emitted by the plurality of LEDs 210 enters the light guide plate 100 through the light incident surface of the light guide plate 100 and then exits upward. Since the LED light bar 200 is disposed on the left side of the light guide plate 100, the brightness of the light guide plate 100 on the left side is relatively large, so that the brightness at the left edge of the display area is higher than the brightness of other display areas, in the display screen. Form a bright line.
  • Some embodiments of the present disclosure provide a side-entry light guide plate, wherein a first groove is formed in the light guide plate, the first groove is located at a first side edge of the light guide plate and The first side edge is spaced apart, and the side of the light guide plate on the first side is a light incident surface.
  • the first groove is configured to refract light incident to the first groove such that the position of the light reaching the light exit surface of the light guide plate is offset toward the first side.
  • the opening of the first recess is located on a light exit surface of the light guide plate.
  • the number of the first grooves formed by the light guide plate at the edge of the first side is one, and the extending direction of the first groove coincides with the extending direction of the edge of the first side, and The length of the direction coincides with the length of the light-emitting portion of the light-emitting source that is adapted to the light guide plate.
  • the light incident surface of the light guide plate is further formed with a plurality of V-shaped second grooves for diverging light incident into the body of the light guide plate.
  • the light incident surface of the light guide plate adopts a ground surface structure.
  • Some embodiments of the present disclosure are a backlight module including the above-described light guide plate.
  • the backlight module further includes a side-entry light source, the side-entry backlight including a plurality of light emitting units arranged in a direction parallel to the first side edge of the light guide plate.
  • Some embodiments of the present disclosure are a display device including the above backlight module.
  • the display device includes a display area and a non-display area at the periphery of the display area, the first groove of the light guide plate being located within the non-display area of the display device.
  • FIG. 2 is a top plan view of a backlight module according to Embodiment 1 of the present disclosure
  • FIG. 3 is a schematic longitudinal sectional view of a backlight module according to Embodiment 1 of the present disclosure
  • the present disclosure provides a side-entry light guide plate, wherein the light guide plate is formed with a first a groove, the first groove is located at a first side edge of the light guide plate, and is capable of refracting light incident on the first groove, so that the light reaches a position of the light exit surface of the light guide plate to be first
  • the side of the light guide plate is a light incident surface on a side of the first side.
  • the side-lit light guide plate provided by the present disclosure is located at the first side edge of the light guide plate, and can refract light incident on the first groove to make the light reach the light-emitting surface of the light guide plate.
  • the first side is offset, and the side of the light guide plate on the first side is a light incident surface. In this way, the light that should be emitted in the bright line region of the light-emitting surface is deflected to the non-display area of the light-emitting surface, thereby reducing the display brightness of the bright-line area and weakening the bright line phenomenon.
  • the present disclosure further provides a method for fabricating a light guide plate, which can be used to fabricate the light guide plate of the first aspect, the method comprising: providing a light guide plate original plate; at a first side edge of the original plate of the light guide plate Etching the first recess, the first recess is capable of refracting light incident on the first recess, and shifting the position of the light to the light exit surface of the light guide plate toward the first side, the guide The side of the light panel on the first side is a light incident surface.
  • the specific structure of the light guide plate may be represented in various different forms, and the specific structure of the backlight module including the corresponding light guide plate and the method for manufacturing the light guide plate may also be slightly different. Detailed instructions are given.
  • FIG. 2 and FIG. 3 show the structure of the light guide plate provided in Embodiment 1 of the present disclosure.
  • the light guide plate is represented as 100.
  • the left side surface of the light guide plate 100 is a light incident surface
  • the light source 200 is disposed on the left side of the light guide plate 100
  • the upper surface of the light guide plate 100 is a light exit surface.
  • 2 shows the structure of the light guide plate 100 in a plan view
  • FIG. 3 shows the structure of the first longitudinal section of the light guide plate 100 at the C position in FIG. 2 at a position close to the light incident side, which The first longitudinal section is a section perpendicular to the light incident surface.
  • V-shaped second grooves 130 are provided on the light incident surface of the light guide plate 100, and these V-shaped grooves function as prisms. This causes light incident on the light guide plate 100 to be diverged by the second groove 130. This can reduce the phenomenon of bright spots generated at the edges of the display area.
  • the second groove 130 herein is not necessarily a structure to be provided for the basic purpose of the present disclosure.
  • the opening of the first groove 120 is located on the upper surface of the light guide plate 100 is shown in FIGS. 2 and 3, in practical applications, the opening of the first groove 120 is set to The lower surface of the light guide plate 100 can also achieve the basic purpose of the present disclosure, and the corresponding technical solutions should also fall within the protection scope of the present disclosure.
  • the left side wall and the right side wall of the first groove 120 are not necessarily required to be parallel to the light incident surface.
  • the first groove 120 may be used.
  • the side walls are disposed so as not to be perpendicular to the light exiting surface, but one of the side walls is inclined at an angle.
  • the schematic diagram of the backlight module including the light guide plate provided in the first embodiment of the present disclosure may also refer to FIG. 2 and FIG. 3, and further includes a light source 200 disposed on the left side of the light guide plate 100, and the light source includes The plurality of light emitting units 210 have a length of the light emitting region in the light source 200 that coincides with the length of the first groove 120 in the light guide plate 100.
  • the method for manufacturing the light guide plate of the first embodiment may specifically include:
  • a plurality of second grooves are etched on the light incident surface of the original plate of the light guide plate.
  • the first groove 120 described above may also correspond to the plurality of light emitting units 210 to refract light emitted by the plurality of light emitting units 210.
  • Corresponding technique The technical solution can also achieve similar technical effects, and should also fall within the protection scope of the present disclosure.
  • the present disclosure further provides a display device including the backlight module described above.
  • the display device includes a display area and a non-display area at the periphery of the display area, and the first groove of the light guide plate is located in the non-display area of the display device.
  • the display device here can be: electronic paper, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator and the like with any display product or component.
  • the display device provided by the present disclosure may be a liquid crystal display device or other types of display devices.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种侧入式导光板（100）及其制作方法、背光模组和显示装置。在该侧入式导光板（100）中形成有第一凹槽（120），所述第一凹槽（120）位于所述导光板（100）的第一侧边缘处且与所述第一侧边缘间隔，所述导光板（100）在第一侧的侧面为入光面。

Description

侧入式导光板、背光模组及其制作方法和显示装置 技术领域
本公开涉及一种侧入式导光板、背光模组及其制作方法和显示装置。
背景技术
传统的侧光式液晶显示背光模组的结构如图1所示，包括导光板100、设于导光板100一侧的发光二极管(LED)灯条200。所述LED灯条200上朝向所述导光板100的一侧分布有若干LED 210，所述若干LED 210发出的光经所述导光板100的入光面进入导光板100之后向上出射。由于LED灯条200设置在导光板100的左侧，则左侧的导光板100的亮度较大，这样在显示区域的左侧边缘处的亮度会高于其他显示区域的亮度，在显示画面中形成亮线。
发明内容
本公开的一些实施例提供一种侧入式导光板，其中，所述导光板中形成有第一凹槽，所述第一凹槽位于所述导光板的第一侧边缘处且与所述第一侧边缘间隔，所述导光板在第一侧的侧面为入光面。
在一些示例中，所述第一凹槽被配置为使入射到所述第一凹槽的光线发生折射，使该光线到达所述导光板出光面的位置向第一侧偏移。
在一些示例中，所述第一凹槽的开口位于所述导光板的出光面上。
在一些示例中，所述导光板在第一侧的边缘处形成的第一凹槽的数量为一个，该第一凹槽的延伸方向与所述第一侧的边缘的延伸方向一致，且在该方向的长度和与所述导光板相适应的发光源的发光部分的长度一致。
在一些示例中，所述导光板在第一侧的边缘处形成的第一凹槽的数量为多个，所述多个第一凹槽沿所述第一侧的边缘延伸且排列。
在一些示例中，所述导光板的入光面还形成有多个V形的第二凹槽，所述第二凹槽用于使入射到导光板的主体中的光线发散。
在一些示例中，所述第一凹槽的两个侧壁平行于所述入光面。
在一些示例中，所述导光板的入光面采用磨面结构。
本公开的一些实施例提供一种导光板的制作方法，包括：提供导光板原板；在所述导光板原板的第一侧边缘处刻蚀第一凹槽，所述第一凹槽与所述第一侧边缘间隔，所述导光板在第一侧的侧面为入光面。
本公开的一些实施例一种背光模组，包括上述导光板。
在一些示例中，背光模组还包括设置在所述导光板出光面的相反面的第一侧边缘的吸光层。
在一些示例中，背光模组还包括侧入式光源，所述侧入式背光源包括多个发光单元，所述多个发光单元沿与所述导光板的第一侧边缘平行的方向排列。
本公开的一些实施例一种显示装置，包括上述背光模组。
在一些示例中，显示装置包括显示区域和在显示区域外围的非显示区域，所述导光板的第一凹槽位于所述显示装置的非显示区域内。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为现有技术中的一种背光模组的结构示意图；
图2为本公开实施例一提供的背光模组的俯视图；
图3为本公开实施例一提供的背光模组的纵切面示意图；
图4为本公开实施例二提供的背光模组的俯视图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
第一方面，本公开提供了一种侧入式导光板，所述导光板中形成有第一 凹槽，所述第一凹槽位于所述导光板第一侧边缘处，能够使入射到所述第一凹槽的光线发生折射，使该光线到达所述导光板出光面的位置向第一侧偏移，所述导光板在第一侧的侧面为入光面。
本公开提供的侧入式导光板中，位于所述导光板第一侧边缘处，能够使入射到所述第一凹槽的光线发生折射，使该光线到达所述导光板出光面的位置向第一侧偏移，所述导光板在第一侧的侧面为入光面。这样能够使得本应在出光面的亮线区域出射的光线被偏移到出光面的非显示区域出射，从而降低亮线区域的显示亮度，消弱亮线现象。
第二方面，本公开还提供了一种导光板的制作方法，可用于制作第一方面所述的导光板，该方法包括：提供导光板原板；在所述导光板原板的第一侧边缘处刻蚀第一凹槽，所述第一凹槽能够使入射到所述第一凹槽的光线发生折射，使该光线到达所述导光板出光面的位置向第一侧偏移，所述导光板在第一侧的侧面为入光面。
第三方面，本公开提供了一种背光模组，该背光模组包括上述第一方面所述的导光板。
在具体实施时，上述的导光板的具体结构可能表现为多种不同的形式，包含相应的导光板的背光模组的具体结构以及制作该导光板的方法也可能略有不同，下面结合附图进行详细说明。
实施例一
本公开实施例一提供的导光板的结构可以参考图2和图3，其中的导光板表示为100。为了方便说明，假设导光板100的左侧面为入光面，发光源200设置在该导光板100的左侧，而导光板100的上表面为出光面。图2示出了该导光板100的俯视时的结构；图3中示出了该导光板100在图2中的C位置处的第一纵切面在靠近入光侧的位置处的结构，该第一纵切面为垂直于入光面的切面。参见图2和图3，在导光板100中形成有一个第一凹槽120和多个第二凹槽130。第一凹槽120位于导光板100的左侧边缘处，总体呈长条状，沿左侧边缘延伸；且在第一纵切面中的截面为长方形，其左侧侧壁和右侧侧壁均平行于入光面，并且该第一凹槽120的长度与发光源200的发光区域(发光区域为各个发光单元210以及发光单元210之间的区域)的长度一致(和发光源的发光区域近似相同，比如略大于发光区域的长度)；第 二凹槽130设置在导光板100的入光面上，在垂直于出光面的方向上贯穿导光板100的主体部分，且在俯视时大体呈V形。这里的第一凹槽120位于导光板100的左侧边缘处是指第一凹槽位于导光板的左侧边缘附近。如图3所述，第一凹槽120与左侧边缘具有间隔，该间隔的大小可以根据实际情况而设定。例如，在显示装置中，导光板的第一凹槽120可以位于显示装置周边的非显示区域。
参见图3，当从左侧入射到导光板100的主体中的光线经过第一凹槽120时，发生两次折射，由于第一凹槽120内空气的折射率小于导光板100的主体的折射率，最终在导光板100的出光面的出射位置与不经第一凹槽120折射时在导光板100的出光面的出射位置相比向左侧偏移。这样使得一部分本应在出光面的亮线区域出射的光线经出光面的非显示区域出射，经非显示区域出射的光线会被形成在非显示区域的胶框等其他结构遮挡，从而降低显示区域在靠近非显示区域的边缘处的亮度，消弱了亮线现象。
同样参见图2，本公开实施例中，在导光板100的入光面上设置有V形的第二凹槽130，这些V形凹槽起到了棱镜的作用。这样会导致入射到该导光板100的光线被第二凹槽130发散。这样能够降低在显示区域的边缘所产生的亮斑现象。当然仅就为了达到本公开的基本目的而言，这里的第二凹槽130并不是必须要设置的结构。
不难理解的是，虽然图2和图3中示出的是第一凹槽120的开口位于导光板100的上表面的情况，但是在实际应用中，将第一凹槽120的开口设置于导光板100的下表面也能够达到本公开的基本目的，相应的技术方案也应该落入本公开的保护范围。另外，在具体实施时，上述的第一凹槽120的左侧侧壁和右侧侧壁也不必须的需要与入光面平行，比如在实际应用中，可以将上述的第一凹槽120的侧壁设置为不垂直于出光面，而是其中的一个侧壁发生一定角度的倾斜。另外，在实际应用中，上述的第一凹槽120的延伸方向也不必须的与上述的左侧边缘平行。在能够达到本公开的基本目的的前提下，这些对本公开实施例提供的导光板的简单变型得到的方案均应该落入本公开的保护范围。
包含本公开实施例一提供的导光板的背光模组的结构示意图同样可以参考图2和图3，还包括设置在导光板100的左侧的发光源200，该发光源包括 多个发光单元210，该发光源200中的发光区域的长度与导光板100中的第一凹槽120的长度一致。
作为一种可选的方式，上述的背光模组还可以包括设置在导光板100的下表面中左侧边缘处的吸光层300。这样能够减少反射到上述的亮线区域的光线，从而进一步消弱亮线。具体来说，这里的吸光层300可以为吸光胶带，该吸光胶带贴附到导光板100的下表面。
在具体实施时，制作实施例一的导光板的方法可以具体包括：
提供一导光板原板；
在该导光板原板的出光面的左侧边缘处刻蚀出一个条状的凹槽，该凹槽在第一纵切面上的截面为长方形；
在导光板原板的入光面上刻蚀多个第二凹槽。
在具体实施时，上述的刻蚀过程的具体工艺可以参考现有技术，本公开中不再详细说明。
实施例二
本公开实施例二提供的导光板100的具体结构的俯视图可以参考图4，在第一凹槽120处的第一纵切面的示意图同样可以参考图3，与实施例一提供的导光板100的结构不同的是，本公开实施例二中，在左侧边缘处设置的第一凹槽120的数量为多个，每一个第一凹槽120适于对应的使与该导光板100相适应的发光源200中的一个发光单元210发出的光线发生折射。这样就减少了导光板100中第一凹槽120的总体积，从而提高导光板100的强度，降低导光板100断裂的风险。
参见图4，包含本公开实施例二提供的导光板100的背光模组的结构中，发光源200包含多个发光单元210，每一个发光单元210与导光板100中的一个第一凹槽120的位置相对应，第一凹槽120能够适于对应的使与该导光板100相适应的发光源200中的一个发光单元210发出的光线发生折射，从而向左侧偏折。
在具体实施时，本公开实施例二提供的导光板100以及包含该导光板100的背光模组的其他结构特点可以参考实施例一，此处不再详细说明。
不难理解的是，在具体实施时，上述的一个第一凹槽120也可以与多个发光单元210相对应，将多个发光单元210发出的光线进行折射。相应的技 术方案也能够达到类似的技术效果，也应该落入本公开的保护范围。
制作实施例二提供的导光板时的制作方法可以参考制作实施例一中的导光板的方法，不同的是，需要在导光板原板刻蚀多个第一凹槽。
实施例三
本公开实施例三提供的导光板与实施例一和实施例二提供的导光板不同的是，在导光板的入光面上采用磨面设计，由于磨面设计同样能够起到将进入到导光板的主体中光线进行散射的作用，因此同样能够消弱亮斑现象。
第四方面，本公开还提供了一种显示装置，包括上述所述的背光模组。例如，显示装置包括显示区域和在显示区域外围的非显示区域，所述导光板的第一凹槽位于所述显示装置的非显示区域内。
这里的显示装置可以为：电子纸、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
不难理解的是，本公开提供的显示装置可以为液晶显示装置，也可以为其他类型的显示装置。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2015年10月8日递交的中国专利申请第201510641708.X号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (14)

  1. 一种侧入式导光板，其中，所述导光板中形成有第一凹槽，所述第一凹槽位于所述导光板的第一侧边缘处且与所述第一侧边缘间隔，所述导光板在第一侧的侧面为入光面。
  2. 根据权利要求1所述的侧入式导光板，其中，所述第一凹槽被配置为使入射到所述第一凹槽的光线发生折射，使该光线到达所述导光板出光面的位置向第一侧偏移。
  3. 如权利要求1或2所述的导光板，其中，所述第一凹槽的开口位于所述导光板的出光面上。
  4. 如权利要求1-3任一项所述的导光板，其中，所述导光板在第一侧的边缘处形成的第一凹槽的数量为一个，该第一凹槽的延伸方向与所述第一侧的边缘的延伸方向一致，且在该方向的长度和与所述导光板相适应的发光源的发光部分的长度一致。
  5. 如权利要求1-4任一项所述的导光板，其中，所述导光板在第一侧的边缘处形成的第一凹槽的数量为多个，所述多个第一凹槽沿所述第一侧的边缘延伸且排列。
  6. 如权利要求1-5任一项所述的导光板，其中，所述导光板的入光面还形成有多个V形的第二凹槽，所述第二凹槽用于使入射到导光板的主体中的光线发散。
  7. 如权利要求1-6任一项所述的导光板，其中，所述第一凹槽的两个侧壁平行于所述入光面。
  8. 如权利要求1-7任一项所述的导光板，其中，所述导光板的入光面采用磨面结构。
  9. 一种导光板的制作方法，包括：
    提供导光板原板；
    在所述导光板原板的第一侧边缘处刻蚀第一凹槽，所述第一凹槽与所述第一侧边缘间隔，所述导光板在第一侧的侧面为入光面。
  10. 一种背光模组，包括如权利要求1-8任一项所述的导光板。
  11. 如权利要求10所述的背光模组，还包括设置在所述导光板出光面的 相反面的第一侧边缘的吸光层。
  12. 如权利要求10所述的背光模组，还包括侧入式光源，所述侧入式背光源包括多个发光单元，所述多个发光单元沿与所述导光板的第一侧边缘平行的方向排列。
  13. 一种显示装置，包括如权利要求10-12任一项所述的背光模组。
  14. 根据权利要求13所述的显示装置，包括显示区域和在显示区域外围的非显示区域，所述导光板的第一凹槽位于所述显示装置的非显示区域内。
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105204108B (zh) * 2015-10-08 2018-03-13 京东方光科技有限公司 侧入式导光板、背光模组及其制作方法和显示装置
CN106066554B (zh) * 2016-06-30 2020-04-24 京东方科技集团股份有限公司 一种背光模组及显示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101718417A (zh) * 2009-11-11 2010-06-02 友达光电股份有限公司 液晶显示器及其导光板
CN101769504A (zh) * 2008-12-30 2010-07-07 宏齐科技股份有限公司 具有荧光材料层的导光结构
CN101865425A (zh) * 2008-03-05 2010-10-20 胜华科技股份有限公司 导光板及其入光结构
CN102121668A (zh) * 2010-01-11 2011-07-13 中强光电股份有限公司 导光板及背光模组
CN102192440A (zh) * 2010-03-19 2011-09-21 中强光电股份有限公司 背光模组
US20150117059A1 (en) * 2013-10-31 2015-04-30 Samsung Electronics Co., Ltd. Multidirectional lighting module for implementing multiple colors and electronic device having the same
CN105204108A (zh) * 2015-10-08 2015-12-30 京东方光科技有限公司 侧入式导光板、背光模组及其制作方法和显示装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5386347A (en) * 1992-10-02 1995-01-31 Photo Craft Co., Ltd. Illuminating apparatus and a method of manufacturing an edge light conductor for use therein
JP3516005B2 (ja) * 1997-01-17 2004-04-05 オムロン株式会社 面光源装置
DE60033264T2 (de) * 1999-12-28 2007-11-08 Fujitsu Kasei Ltd., Yokohama Beleuchtungsapparat für Anzeige
US6648485B1 (en) * 2000-11-13 2003-11-18 International Business Machines Corporation Highly collimating tapered light guide for uniform illumination of flat panel displays
CN1570720A (zh) * 2003-07-23 2005-01-26 鸿富锦精密工业（深圳）有限公司 背光源装置和液晶显示器
CN2700911Y (zh) * 2004-03-02 2005-05-18 联准实业有限公司 导光板
TWI259313B (en) * 2004-10-19 2006-08-01 Ind Tech Res Inst Light-guide plate and method for manufacturing thereof
US20060203514A1 (en) * 2005-03-09 2006-09-14 K-Bridge Electronics Co., Ltd. Light guide plate structure
TWM278909U (en) * 2005-05-23 2005-10-21 Innolux Display Corp Light guide plate and backlight module using the same
TWI327666B (en) * 2006-03-17 2010-07-21 Hon Hai Prec Ind Co Ltd Light guide plate and backlight module using the same
US7808578B2 (en) * 2007-07-12 2010-10-05 Wintek Corporation Light guide place and light-diffusing structure thereof
CN101509987A (zh) * 2009-03-19 2009-08-19 旭丽电子(广州)有限公司 导光板及使用该导光板的背光模组
JP4985787B2 (ja) * 2010-01-12 2012-07-25 オムロン株式会社 面光源装置及び液晶表示装置
KR101261462B1 (ko) * 2010-08-26 2013-05-10 엘지이노텍 주식회사 백라이트 유닛
US9442240B2 (en) * 2012-03-16 2016-09-13 Radiant Opto-Electronics Corporation Light guide plate and light source module
CN102661527B (zh) * 2012-03-29 2014-03-26 深圳市华星光电技术有限公司 背光模组及液晶显示器
CN203204188U (zh) * 2013-02-21 2013-09-18 深圳市山本光电有限公司 一种led彩屏背光源用导光板

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865425A (zh) * 2008-03-05 2010-10-20 胜华科技股份有限公司 导光板及其入光结构
CN101769504A (zh) * 2008-12-30 2010-07-07 宏齐科技股份有限公司 具有荧光材料层的导光结构
CN101718417A (zh) * 2009-11-11 2010-06-02 友达光电股份有限公司 液晶显示器及其导光板
CN102121668A (zh) * 2010-01-11 2011-07-13 中强光电股份有限公司 导光板及背光模组
CN102192440A (zh) * 2010-03-19 2011-09-21 中强光电股份有限公司 背光模组
US20150117059A1 (en) * 2013-10-31 2015-04-30 Samsung Electronics Co., Ltd. Multidirectional lighting module for implementing multiple colors and electronic device having the same
CN105204108A (zh) * 2015-10-08 2015-12-30 京东方光科技有限公司 侧入式导光板、背光模组及其制作方法和显示装置

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