WO2022077768A1 - 侧入式背光模块 - Google Patents

侧入式背光模块 Download PDF

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Publication number
WO2022077768A1
WO2022077768A1 PCT/CN2020/139921 CN2020139921W WO2022077768A1 WO 2022077768 A1 WO2022077768 A1 WO 2022077768A1 CN 2020139921 W CN2020139921 W CN 2020139921W WO 2022077768 A1 WO2022077768 A1 WO 2022077768A1
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WIPO (PCT)
Prior art keywords
guide plate
light guide
light source
backlight module
led light
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PCT/CN2020/139921
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English (en)
French (fr)
Inventor
黄桂彬
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广州视源电子科技股份有限公司
广州视睿电子科技有限公司
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Publication of WO2022077768A1 publication Critical patent/WO2022077768A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present disclosure relates to the technical field of optical machines, and in particular, to an edge-lit backlight module.
  • the reflective sheet On the backlight module of the existing light unit, the reflective sheet is randomly placed on the back panel.
  • the reflective sheet extends under the LED light source, the light emitted by the LED light source is reflected by the reflective sheet and then guided upward to reach the incoming light. side display area, resulting in lamp shadows in the light-incident side display area, that is, the firefly phenomenon.
  • the main purpose of the present disclosure is to provide an edge-type backlight module, so as to solve the problem of firefly-shaped lamp shadows caused by the fact that the reflector is arranged under the LED light source in the existing light unit.
  • An edge-type backlight module comprises a light guide plate, a reflection sheet and an LED light source arranged on the light incident side of the light guide plate; the reflection sheet is fixedly arranged on the lower surface of the light guide plate; the end of the reflection sheet close to the LED light source is close to the light guide plate One end of the LED light source is offset by a specified distance away from the LED light source.
  • the upper surface of the light guide plate is provided with a V-shaped groove; the two sides of the V-shaped groove forming the V-shaped included angle are of equal length.
  • the light guide plate includes a blank area disposed on a side close to the LED light source.
  • the length of the blank area is 5-7mm.
  • the edge-type backlight module further includes a backplane and a middle frame; the reflective sheet is fixedly arranged on the backplane; the LED light source is fixed on the backplane; the middle frame is fixedly connected to the backplane; A boss is arranged on one side; the boss is arranged above the side of the light guide plate close to the LED light source, a gap is formed between the boss and the light guide plate; the boss is affixed with foam at the gap.
  • the foam is Poron.
  • the gap between the foam and the light guide plate is 0-0.01mm.
  • the side-illuminated backlight module further includes a diaphragm, and the diaphragm is arranged on the upper surface of the light guide plate; the diaphragm is arranged on the side of the foam that faces away from the LED light source.
  • the side of the middle frame facing the light guide plate is provided with an elastic piece; the elastic piece is arranged on the side of the boss away from the LED light source; the middle frame presses and fixes the diaphragm on the light guide plate through the elastic piece.
  • An edge-type backlight module provided by the present disclosure includes a light guide plate, a reflection sheet and an LED light source arranged on the light incident side of the light guide plate; the reflection sheet is fixedly arranged on the lower surface of the light guide plate; the reflection sheet is close to one end of the LED light source Offset the end of the light guide plate close to the LED light source to the direction away from the LED light source by a specified distance.
  • the reflection sheet is designed to be retracted relative to the light guide plate, and there is no reflection sheet under the LED light source and under the side of the light guide plate close to the LED light source.
  • the inner conduction is Mainly, the upwardly conducted light is concentrated and reduced, thereby eliminating the phenomenon of firefly-like lamp shadows appearing in the display area due to the strong light reflection of the reflector on the LED light source.
  • Fig. 1 is the schematic diagram of the firefly phenomenon of the backlight module of the complete machine in the prior art
  • FIG. 2 is a schematic structural diagram of an edge-lit backlight module according to an embodiment of the disclosure
  • FIG. 3 is a schematic structural diagram of a light guide plate according to an embodiment of the disclosure.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as “first”, “second” may expressly or implicitly include one or more of said features. In the description of the present disclosure, “plurality” means two or more, unless expressly and specifically defined otherwise.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or an internal communication between two elements or an interaction relationship between the two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or an internal communication between two elements or an interaction relationship between the two elements.
  • a first feature "on” or “under” a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “beneath” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level less than the second feature.
  • the reflective sheet A is arranged under the light guide plate B and randomly placed on the back plate C.
  • the reflective sheet A extends under the LED light source D, the light is reflected and then guided upward. to the display area, resulting in a firefly-like light shadow E in the display area.
  • FIG. 2 is a schematic structural diagram of an edge-lit backlight module of the present embodiment.
  • an edge-type backlight module includes a light guide plate 1, a reflection sheet 2 and an LED light source 3 arranged on the light incident side of the light guide plate 1; the reflection sheet 2 is fixedly arranged on the lower surface of the light guide plate 1; the reflection sheet 2.
  • the end close to the LED light source 3 is set at a specified distance offset from the end of the light guide plate 1 close to the LED light source 3 in the direction away from the LED light source 3.
  • the reflection sheet 2 is designed to be retracted relative to the light guide plate 1. There is no reflection sheet 2 under the LED light source 3 and under the side of the light guide plate 1 close to the LED light source 3. Therefore, the light emitted by the LED light source 3 is When the light incident side is irradiated on the light guide plate 1, it is mainly conducted in the past, and the light transmitted upward is concentrated and reduced, thereby eliminating the firefly-like light shadow in the display area caused by the reflection of the light from the LED light source 3 by the reflector 2 on the light incident side. The phenomenon.
  • the reflection sheet 2 is set inwardly by 5-10 mm in a direction away from the LED light source 3 relative to the light guide plate 1 .
  • the reflection sheet 2 is designed to reflect the light below the light guide plate 1 and improve the utilization rate of light energy.
  • the reflective sheet 2 is designed with a 5-10 mm indentation in the direction away from the LED light source 3 relative to the light guide plate 1, which can not only prevent the reflective sheet 2 from affecting the light emitted by the LED light source 3 on the light incident side
  • the reflection causes firefly-like lamp shadows to appear in the display area of the optical machine, and also ensures the area coverage of the reflective sheet 2 on the lower surface of the light guide plate 1, and improves the light energy utilization rate of the backlight module.
  • the upper surface of the light guide plate 1 is provided with a V-shaped groove 11 , and the two sides of the V-shaped groove 11 forming the V-shaped included angle are of equal length.
  • the angle a of the V-shaped groove 11 ranges from 30° to 60°. In this embodiment, the angle a is 90° and the depth T is 7 ⁇ m.
  • the V-shaped groove 11 is arranged on the upper surface of the light guide plate 1, and the light is corrected by the principle of refraction, so that the light is uniformly emitted from the upper surface of the light guide plate 1, and the uneven brightness of the display area and lamp shadows are effectively solved. bad phenomenon.
  • the existing light machine basically adopts the PMMA light guide plate, the upper surface of which is relatively smooth and basically has no correcting effect on the light.
  • the light guide plate 1 of this embodiment adopts the MSV light guide plate. Compared with the existing PMMA light guide plate, it not only has a certain correction effect on the light, but also has a small amount of deformation, which further reduces the deformation of the light guide plate 1 on the light incident side. The phenomenon of firefly-like light shadows.
  • the light guide plate 1 includes a blank area 12 disposed on a side close to the LED light source 3 .
  • the length L of the blank area 12 is 5-7 mm, which is longer than the length of the blank area of the existing light guide plate.
  • the length L of the blank area 12 is increased on the light guide plate 1, so that the light will not be excessively refracted in the blank area 12, and the generation of firefly-like lamp shadows in the display area is further reduced.
  • the edge-type backlight module further includes a backplane 4 and a middle frame 5; the reflective sheet 2 is fixed on the backplane 4; the LED light source 3 is fixed on the backplane 4; the middle frame 5 Fixed connection with the back plate 4; the middle frame 5 is provided with a boss 51 on the side facing the light guide plate 1; the boss 51 is arranged above the side of the light guide plate 1 close to the LED light source 3, A gap is formed between 1; the boss 51 is attached with a foam 6 at the gap.
  • the foam 6 is designed on the top of the light guide plate 1 near the LED light source 3, so that the light reaching the upper part of the light incident side of the light guide plate 1 is absorbed by the foam 6, thereby preventing the generation of firefly-like shadows.
  • the foam 6 is Poron.
  • the foam 6 is made of low-density Poron, with a specific density of 0.2g/cm 3 . Since the low-density Poron has the characteristics of high cushioning and high sealing, it can avoid the risk of the light guide plate 1 being crushed or scratched. It can effectively prevent the occurrence of firefly-like lamp shadows caused by the deformation of the light guide plate 1 .
  • the gap between the foam 6 and the light guide plate 1 is 0-0.01mm, and the nearly sealed design between the foam 6 and the light guide plate 1 can prevent light from passing through the gap between the foam 6 and the light guide plate 1.
  • the display area produces firefly-like light shadows.
  • the edge-type backlight module further includes a diaphragm 7 , and the diaphragm 7 is arranged on the upper surface of the light guide plate 1 ; the diaphragm 7 is arranged on the side of the foam 6 facing away from the LED light source 3 .
  • the edge-type backlight module further includes a diaphragm 7 , and the diaphragm 7 is arranged on the upper surface of the light guide plate 1 ; the diaphragm 7 is arranged on the side of the foam 6 facing away from the LED light source 3 .
  • an optical film 7 with a specific pattern structure on the upper surface of the light guide plate 1 by attaching an optical film 7 with a specific pattern structure on the upper surface of the light guide plate 1, a backlight with uniform brightness in the display area of the entire light guide is formed, which can eliminate the defect of uneven brightness in the display area, and improve the The brightness of the display area.
  • the side of the middle frame 5 facing the light guide plate 1 is provided with an elastic member 52; the elastic member 52 is arranged on the side of the boss 51 away from the LED light source 3, The sheet 7 is pressed and fixed on the light guide plate 1 .
  • the elastic member 52 is a buffer tape.
  • the reflection sheet 2 is designed to be retracted relative to the light guide plate 1
  • the V-shaped groove 11 is designed on the upper surface of the light guide plate 1 to increase the light entering of the light guide plate 1
  • the length L of the side blank area 12 is left, and the boss 51 and the foam 6 are designed on the side of the middle frame 5 close to the light guide plate 1, which effectively reduces the phenomenon of firefly-like lamp shadows in the display area of the optical machine, and improves the side entry.
  • the light output quality of the type backlight module is simple and easy to implement, does not need to increase the cost, and has wide application prospects.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种侧入式背光模块，包括导光板（1）、反射片（2）以及设置在导光板（1）入光侧的LED灯源（3）；反射片（2）固定设置在导光板（1）的下表面；反射片（2）靠近LED灯源（3）的一端相对导光板（1）靠近LED灯源（3）的一端向远离LED灯源（3）的方向偏移指定距离设置。通过将反射片（2）相对导光板（1）进行内缩设计，LED灯源（3）的下方以及导光板（1）靠近LED灯源（3）的一侧下方没有反射片（2），因此LED灯源（3）发出的光照射在导光板（1）时以往内传导为主，往上传导的光聚减，从而消除了因反射片（2）对LED灯源（3）的强光反射导致显示区出现萤火虫状灯影的现象。

Description

侧入式背光模块
本申请要求于2020年10月14日提交至中国国家知识产权局、申请号为2020222917856、发明名称为“侧入式背光模块”的专利申请的优先权。其全部内容通过引用结合在本社中。
技术领域
本公开涉及到光整机技术领域，特别是涉及到一种侧入式背光模块。
背景技术
在现有光整机的背光模块上，反射片随机放置在背板上，当反射片伸入LED灯源的底下时，LED灯源发出的光通过反射片进行反射后往上传导到达入光侧显示区，导致入光侧显示区出现灯影，即萤火虫现象。
申请内容
本公开的主要目的为提供一种侧入式背光模块，以解决现有光整机因反射片设置在LED灯源下方导致出现萤火虫状灯影的问题。
本公开的技术方案为：
一种侧入式背光模块，包括导光板、反射片以及设置在导光板入光侧的LED灯源；反射片固定设置在导光板的下表面；反射片靠近LED灯源的一端相对导光板靠近LED灯源的一端向远离LED灯源的方向偏移指定距离设置。
可选的，指定距离为5-10mm。
可选的，导光板的上表面设有V型槽；V型槽形成V型夹角的两边等长。
可选的，导光板包括设置在靠近LED灯源的一侧的留白区。
可选的，留白区的长度为5-7mm。
可选的，侧入式背光模块还包括背板和中框；反射片固定设置在背板上；LED灯源固定在背板上；中框与背板固定连接；中框于朝向导光板的一侧上设有凸台；凸台设置在导光板靠近LED灯源的一侧的上方，凸台与导光板之间形成间隙；凸台在间隙处贴设有泡棉。
可选的，泡棉为Poron。
可选的，泡棉与导光板的间隙为0-0.01mm。
可选的，侧入式背光模块还包括膜片，膜片设置在导光板的上表面；膜片设置在泡棉背向LED灯源的一侧。
可选的，中框朝向导光板的一侧设有弹性件；弹性件设置在凸台背离LED灯源的一侧；中框通过弹性件将膜片压紧固定于导光板上。
本公开提供的一种侧入式背光模块，包括导光板、反射片以及设置在导光板入光侧的LED灯源；反射片固定设置在导光板的下表面；反射片靠近LED灯源的一端相对导光板靠近LED灯源的一端向远离LED灯源的方向偏移指定距离设置。本公开通过将反射片相对导光板进行内缩设计，LED灯源的下方以及导光板靠近LED灯源的一侧下方没有反射片，因此LED灯源发出的光照射在导光板时以往内传导为主，往上传导的光聚减，从而消除了因反射片对LED灯源的强光反射导致显示区出现萤火虫状灯影的现象。
附图说明
图1为现有技术中光整机背光模块的萤火虫现象的示意图；
图2为本公开一实施例的侧入式背光模块的结构示意图；
图3为本公开一实施例的导光板的结构示意图。
本公开目的的实现、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公开，并不用于限定本公开。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本 公开的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本公开的描述中，“多个”的含义是两个或两个以上，除非另有明确具体地限定。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本公开中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度小于第二特征。
参照图1，现有的光整机中，反射片A设置在导光板B下方且随机放置在背板C上，当反射片A伸入LED灯源D底下时，光线通过反射后往上传导到显示区，导致在显示区出现萤火虫状的灯影E。
实施例一：
图2为本实施例的侧入式背光模块的结构示意图。
参照图2，一种侧入式背光模块，包括导光板1、反射片2以及设置在导光板1入光侧的LED灯源3；反射片2固定设置在导光板1的下表面；反射片2靠近LED灯源3的一端相对导光板1靠近LED灯源3的一端向远离LED灯源3的方向偏移指定距离设置。
本实施例通过将反射片2相对导光板1进行内缩设计，LED灯源3的下方以及导光板1靠近LED灯源3的一侧下方没有反射片2，因此LED灯源3发出的光在入光侧照射在导光板1时以往内传导为主，往上传导的光聚减，从而 消除了在入光侧因反射片2对LED灯源3的光进行反射导致显示区出现萤火虫状灯影的现象。
在本实施例中，反射片2相对导光板1向远离LED灯源3的方向内缩5-10mm设置。在光整机的背光模块中，设计反射片2是为了反射导光板1下方的光线，提高光能利用率。在本实施例中，将反射片2相对导光板1向远离LED灯源3的方向进行5-10mm的内缩设计，不仅能够防止反射片2在入光侧对LED灯源3发出的光进行反射导致光整机显示区出现萤火虫状灯影的情况，还保证了反射片2在导光板1下表面的面积覆盖率，提高了该背光模块的光能利用率。
可选的，参照图3，导光板1的上表面设有V型槽11，V型槽11形成V型夹角的两边等长。所述V型槽11的角度a取值范围为30°至60°，在本实施例中，角度a为90°，深度T为7μm。本实施例通过在导光板1的上表面设置V型槽11，利用折射的原理对光线进行修正，从而使光线从导光板1的上表面均匀出光，有效的解决了显示区亮度不均以及灯影不良的现象。现有的光整机基本采用PMMA导光板，其上表面较光滑，对光线基本没有修正作用。本实施例的导光板1采用MSV导光板，相比现有的PMMA导光板，不仅对光线有一定的修正效果，同时其变形量小，进一步减少因导光板1在入光侧发生变形而产生萤火虫状灯影的现象。
可选的，参照图1和图3，导光板1包括设置在靠近LED灯源3的一侧的留白区12。在本实施例中，留白区12的长度L为5-7mm，相对于现有导光板的留白区长度更长。本实施例在导光板1上增大了留白区12的长度L，使得光线在留白区12不会产生过度折射，进一步减少显示区萤火虫状灯影的产生。
参照图2，在本实施例中，侧入式背光模块还包括背板4和中框5；反射片2固定设置在背板4上；LED灯源3固定在背板4上；中框5与背板4固定连接；中框5于朝向导光板1的一侧上设有凸台51；凸台51设置在导光板1靠近LED灯源3的一侧的上方，凸台51与导光板1之间形成间隙；凸台51在间隙处贴设有泡棉6。本实施例在导光板1靠近LED灯源3的上方设计泡棉6，使得到达导光板1入光侧上方的光线被泡棉6吸收，从而防止萤火虫状灯影的产生。
可选的，泡棉6为Poron。泡棉6采用低密度的Poron制成，具体密度为 0.2g/cm 3，由于低密度Poron具有高缓冲性、高密封性的特点，因此可以避免导光板1被压死或磨伤的风险，可以有效防止因导光板1变形而产生萤火虫状灯影的情况发生。
可选的，泡棉6与导光板1的间隙为0-0.01mm，泡棉6与导光板1之间近乎密封的设计，可以防止光线穿过泡棉6与导光板1之间的间隙到达显示区产生萤火虫状的灯影。
参照图2，在本实施例中，侧入式背光模块还包括膜片7，膜片7设置在导光板1的上表面；膜片7设置在泡棉6背向LED灯源3的一侧。本实施例通过在导光板1的上表面贴附有特定图案结构的光学膜片7，形成了具备使整个光整机显示区亮度均匀的背光，可以消除显示区亮度不均匀的缺陷，同时提高显示区的亮度。
在本实施例中，中框5朝向导光板1的一侧设有弹性件52；弹性件52设置在凸台51背离所述LED灯源3的一侧，中框5通过弹性件52将膜片7压紧固定于导光板1上。在本实施例中，该弹性件52为缓冲胶带。
综上所述，本公开提供的侧入式背光模块，通过对反射片2相对导光板1进行内缩设计，同时在导光板1的上表面设计V型槽11，加大导光板1入光侧留白区12的长度L，且在中框5靠近导光板1的一侧设计凸台51和泡棉6，有效减少了在光整机显示区产生萤火虫状灯影的现象，提高了侧入式背光模块的出光质量。本公开工艺简单易实现，无需增加成本，应用前景广泛。
以上所述仅为本公开的优选实施例，并非因此限制本公开的专利范围，凡是利用本公开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，均同理包括在本公开的专利保护范围内。

Claims (10)

  1. 一种侧入式背光模块，包括导光板、反射片以及设置在所述导光板入光侧的LED灯源；所述反射片固定设置在所述导光板的下表面；所述反射片靠近所述LED灯源的一端相对所述导光板靠近所述LED灯源的一端向远离所述LED灯源的方向偏移指定距离设置。
  2. 根据权利要求1所述的侧入式背光模块，其中，所述指定距离为5-10mm。
  3. 根据权利要求1所述的侧入式背光模块，其中，所述导光板的上表面设有V型槽；所述V型槽形成V型夹角的两边等长。
  4. 根据权利要求1所述的侧入式背光模块，其中，所述导光板包括设置在靠近所述LED灯源的一侧的留白区。
  5. 根据权利要求4所述的侧入式背光模块，其中，所述留白区的长度为5-7mm。
  6. 根据权利要求1所述的侧入式背光模块，其中，还包括背板和中框；所述反射片固定设置在所述背板上；所述LED灯源固定在所述背板上；所述中框与所述背板固定连接；所述中框于朝向所述导光板的一侧上设有凸台；所述凸台设置在所述导光板靠近所述LED灯源的一侧的上方，所述凸台与所述导光板之间形成间隙；所述凸台在所述间隙处贴设有泡棉。
  7. 根据权利要求6所述的侧入式背光模块，其中，所述泡棉为Poron。
  8. 根据权利要求6所述的侧入式背光模块，其中，所述泡棉与所述导光板的间隙为0-0.1mm。
  9. 根据权利要求6所述的侧入式背光模块，其中，还包括膜片，所述膜片设置在所述导光板的上表面；所述膜片设置在所述泡棉背向所述LED灯源的一侧。
  10. 根据权利要求9所述的侧入式背光模块，其中，所述中框朝向所述导光板的一侧设有弹性件；所述弹性件设置在所述凸台背离所述LED灯源的一侧；所述中框通过所述弹性件将所述膜片压紧固定于所述导光板上。
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102352984A (zh) * 2011-05-26 2012-02-15 友达光电股份有限公司 背光模块
KR20120026732A (ko) * 2010-09-10 2012-03-20 엘지디스플레이 주식회사 백라이트 유닛 및 이를 이용한 액정 표시장치
CN202204952U (zh) * 2011-09-19 2012-04-25 苏州向隆塑胶有限公司 导光板以及光源装置
CN103939799A (zh) * 2014-03-31 2014-07-23 京东方科技集团股份有限公司 一种背光模组及液晶显示装置
CN204141397U (zh) * 2014-09-30 2015-02-04 南京中电熊猫液晶显示科技有限公司 背光模组
CN106352272A (zh) * 2016-08-22 2017-01-25 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
CN206301121U (zh) * 2017-01-03 2017-07-04 合肥京东方光电科技有限公司 背光模组及显示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120026732A (ko) * 2010-09-10 2012-03-20 엘지디스플레이 주식회사 백라이트 유닛 및 이를 이용한 액정 표시장치
CN102352984A (zh) * 2011-05-26 2012-02-15 友达光电股份有限公司 背光模块
CN202204952U (zh) * 2011-09-19 2012-04-25 苏州向隆塑胶有限公司 导光板以及光源装置
CN103939799A (zh) * 2014-03-31 2014-07-23 京东方科技集团股份有限公司 一种背光模组及液晶显示装置
CN204141397U (zh) * 2014-09-30 2015-02-04 南京中电熊猫液晶显示科技有限公司 背光模组
CN106352272A (zh) * 2016-08-22 2017-01-25 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
CN206301121U (zh) * 2017-01-03 2017-07-04 合肥京东方光电科技有限公司 背光模组及显示装置

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