WO2014194543A1 - 一种背光模块及液晶模组 - Google Patents

一种背光模块及液晶模组 Download PDF

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Publication number
WO2014194543A1
WO2014194543A1 PCT/CN2013/078526 CN2013078526W WO2014194543A1 WO 2014194543 A1 WO2014194543 A1 WO 2014194543A1 CN 2013078526 W CN2013078526 W CN 2013078526W WO 2014194543 A1 WO2014194543 A1 WO 2014194543A1
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WO
WIPO (PCT)
Prior art keywords
backlight
liquid crystal
backboard
folded portion
module according
Prior art date
Application number
PCT/CN2013/078526
Other languages
English (en)
French (fr)
Inventor
吕城龄
郭仪正
萧宇均
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/008,536 priority Critical patent/US9389358B2/en
Publication of WO2014194543A1 publication Critical patent/WO2014194543A1/zh

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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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/13332—Front frames
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components

Definitions

  • the present invention relates to the field of liquid crystal flat panel display technology, and more particularly to a backlight module and a liquid crystal module including the same. Background technique
  • the liquid crystal module mainly includes three parts: a front frame, a liquid crystal panel, and a backlight module.
  • the backlight module includes a back plate, a light source, a reflective sheet, a light guide plate, an optical film, and the like.
  • the light guide plate and the optical film of the backlight module are fixed by positioning members located at the four corners of the back plate. Specifically, as shown in FIG. 1 , a positioning hole (not labeled) that cooperates with the hook 101 is formed on the back plate 108 by providing a hook 101 on the positioning member 104 , and then the step is positioned on the positioning member 104 .
  • Light board 106 is formed on the back plate 108 by providing a hook 101 on the positioning member 104 , and then the step is positioned on the positioning member 104 .
  • a pin 105 is usually disposed on the positioning member 104, and correspondingly, the optical film 103 is provided with a through hole which is inserted into the pin 105, and the optical film is positioned and suspended in this manner.
  • Slice 103 In view of the expansion of the light guide plate 106, the material of the positioning member 104 is generally rubber with elasticity. However, the elastic light guide plate 106 sometimes hits other components (e.g., a backlight source such as an LED located on the side of the light guide plate 106) due to expansion, and there is a fear that other components are crushed and damaged.
  • a backlight module wherein the backlight module includes a backboard, a positioning component, and a backlight assembly, wherein the positioning component is configured to fix the backlight assembly on the backboard, and
  • the positioning assembly includes a positioning member at a corner of the backboard and a folding portion disposed on the backing plate, and the positioning member is adhered to the backing plate.
  • the folded portion is integrally formed at a side portion of the backboard and folded inward.
  • the folding portion includes a first folded portion extending toward an inner side of the back plate, and a second folded portion extending upward from an end of the first folded portion, the The two folds pass through the positioning member.
  • the backlight assembly includes a reflective sheet, a light guide plate and an optical film which are sequentially superposed on the positioning member.
  • the optical film is provided with a through hole, and the second folded portion passes through the through hole on the optical film.
  • the positioning assembly further includes an additional folding portion integrally formed on a side portion of the backboard and extending upward and rearward, and the additional folding The portion is on the same side as the backlight source of the backlight module to prevent the backlight assembly from squeezing the backlight source.
  • the folded portion and the additional folded portion are located at different sides of the back plate, and the folded portion has the same shape as the additional folded portion.
  • the present invention also provides a liquid crystal module, wherein the liquid crystal module includes a backlight module, a liquid crystal panel, and a front frame that is fastened to the back panel, and the backlight module includes a backboard, a positioning component, and a backlight assembly.
  • the positioning component is configured to fix the backlight assembly on the backboard, and the positioning component includes a positioning component at a corner of the backboard and a folding portion disposed on the backboard.
  • the positioning member is bonded to the backboard.
  • the liquid crystal module further includes a plastic frame disposed between the front frame and the back plate, the liquid crystal panel being engaged between the front frame and the plastic frame, and the The liquid crystal panel is located outside the backlight assembly.
  • the folded portion is integrally formed at a side portion of the backboard and folded inward.
  • the folding portion includes a first folded portion extending toward an inner side of the back plate, and a second folded portion extending upward from an end of the first folded portion, the The two folds pass through the positioning member.
  • the backlight assembly includes a reflection sheet, a light guide plate, and an optical film which are sequentially superposed on the positioning member.
  • the optical film is provided with a through hole, and the second folded portion passes through the through hole on the optical film.
  • the positioning assembly further includes an additional folding portion integrally formed on a side portion of the backboard and extending upward and rearward, and the additional folding The portion is on the same side as the backlight source of the backlight module to prevent the backlight assembly from squeezing the backlight source.
  • the folded portion and the additional folded portion are located at different sides of the back plate, and the folded portion has the same shape as the additional folded portion.
  • the present invention has the following advantages: the backlight module according to the present invention, wherein the positioning assembly is for fixing the backlight assembly to the backboard, and the positioning assembly includes a corner portion of the back panel
  • the backlight module of the invention utilizes a high-strength folding portion to position the backlight assembly, which is convenient for assembly and disassembly, and at the same time can cooperate with the positioning member to effectively protect the guiding Other components such as LEDs on the side of the light plate are not crushed and crushed by the light guide plate, and the positioning member is adhered to the back plate to prevent the hook from being exposed to the back plate, resulting in the occurrence of a situation that affects the appearance of the product.
  • FIG. 1 is a schematic cross-sectional view of a conventional backlight module.
  • FIG. 2 is an exploded perspective view of a backing block in accordance with an embodiment of the present invention.
  • FIG. 3 is a schematic view showing the assembled state of the backlight module of FIG. 2.
  • FIG. 4 is a schematic cross-sectional view of the backlight module of FIG. 3.
  • FIG. 5 is a schematic structural view of a folded portion of the back panel of the backlight module of FIG. 3.
  • FIG. 5 is a schematic structural view of a folded portion of the back panel of the backlight module of FIG. 3.
  • Fig. 6 is an exploded perspective view showing a modification of the backlight module of the present invention.
  • Fig. 7 is a schematic view showing the assembled state of the backlight module of Fig. 6.
  • the backlight module of the present invention includes a back plate 205, a positioning assembly, and a backlight assembly.
  • the positioning component is configured to fix the backlight assembly on the backboard 205.
  • the positioning component includes a positioning member 204 at a corner of the back plate 205 and a folding portion 206 disposed on the back plate 205.
  • the keeper 204 is present as an intermediate member and functions to secure the backlight assembly to the backing plate 205.
  • the positioning member 204 is bonded to the back plate 205.
  • the bottom surface of the positioning member 204 is provided with a backing glue to be bonded to the inner surface of the backing plate 205.
  • the backlight module of the present invention avoids the hook being exposed on the backboard, thereby affecting the appearance of the product. The emergence of the situation.
  • the folded portion 206 is integrally formed on the side of the backing plate 205 and folded inward. Since the folded portion 206 is integrally formed at the side of the back plate 205, the folded portion 206 is high in strength.
  • the folded portion 206 includes a first folded portion 2061 extending toward the inner side of the back plate 205 and a second folded portion 2062 extending upward from the end of the first folded portion 2061.
  • the folded portion 206 is stamped by the side wall 2051 of the backing plate 205. That is, the folded portion 206 is formed integrally on the side wall 2051 of the backing plate 205.
  • a joint portion 2060 is formed between the root of the first folded portion 2061 and the side wall 2051.
  • the positioning member 204 is provided with a through hole that cooperates with the second folding portion 2062.
  • the second folding portion 2062 passes through the through hole to suspend positioning of the backlight assembly.
  • the backlight assembly includes a reflective sheet 203, a light guide plate 202, and an optical film 201 which are sequentially superposed on the positioning member 204.
  • the number of the optical films 201 is three.
  • the electrode 202 is located between the reflection sheet 203 and the optical film 201.
  • the reflection sheet 203 is crimped between the stepped surface of the positioning member 204 and the bottom surface of the light guide plate 202.
  • the second folded portion 2062 of the folded portion 206 passes through the positioning member 204.
  • each of the optical films 201 is provided with a through hole 207, and the second folded portion 2062 passes through the through hole 207 of the optical film 201.
  • the second folded portion 2062 sequentially passes through the through hole on the positioning member 204 and the through hole 207 in the optical film 201.
  • the free end of the second folded portion 2062 is higher than the optical film 201 (of course, higher than the reflective sheet 203 and the light guide plate 202).
  • the second folded portion 2062 is higher than the light emitting surface of the backlight source (for example, the backlight source LED), and the second folded portion 2062 has a high strength, and can resist the expansion displacement of the side portion of the light guide plate 202 to prevent the expansion. Squeeze the parts on the side of the light guide.
  • the light guide plate 202 can be positioned to prevent the light guide plate 202 from expanding to crush components such as a backlight source located on the side of the light guide plate 202. Therefore, after the reflective sheet 203 and the light guide plate 202 are positioned by the positioning member 204, the optical film 201 is placed on the light guide plate 202, and the through hole 207 of the optical film 201 is inserted into the second folded portion 2062. Further, each optical film 201 is positioned.
  • FIG. 6 is an exploded perspective view showing a modification of the backlight module of the present invention.
  • FIG. 7 is a schematic view showing an assembled state of the backlight module of FIG. 6.
  • the positioning assembly further comprises an additional fold 306, the other structures being substantially identical.
  • the additional folded portion 306 is formed on the back plate 205 and extends upwardly and inwardly.
  • the additional folded portion 306 is located on the same side as the backlight source 400 of the backlight module as shown in FIGS. 6 and 7 to prevent the light guide plate 202 of the backlight assembly from expanding and pressing the backlight source 400.
  • the backlight source 400 is an LED light bar.
  • the folded portion 206 and the additional folded portion 306 are located on different sides of the backing plate 205.
  • the additional fold portion 306 is located on one side of the backlight source 400, and the fold portion 206 is located on an adjacent side perpendicular to the side on which the backlight source 400 is located.
  • the shape of the folded portion 206 and the shape of the additional folded portion 306 may be the same, whereby the processing can be performed uniformly. As shown in FIG.
  • the additional folded portion 306 is located inside the positioning member 204, and the outer side of the light guide plate 202, that is, the additional folded portion 306 is located between the positioning member 204 and the light guide plate 202. According to the present modification, the additional folded portion 306 can more directly resist the expansion displacement of the side portion of the light guide plate 202 by its own strength, preventing it from expanding and pressing the backlight light source 400.
  • the invention also provides a liquid crystal module.
  • the liquid crystal module includes the backlight module, the liquid crystal panel 210, and a front frame 208 that is fastened to the backboard 205.
  • the liquid crystal module further includes a plastic frame 209 disposed between the front frame 208 and the back plate 205.
  • the liquid crystal panel 210 is engaged between the front frame 208 and the bezel 209, and the liquid crystal panel 210 is located outside the backlight assembly.
  • one or more fold portions 206 are formed on the side wall 2051 of the back sheet 205.
  • a through hole that cooperates with the folded portion 206 is formed on the positioning member 204. While the positioning member 204 is inserted into the folded portion 206 on the back plate 205 to position the light guide plate 202, the positioning of the optical film 201 can also be achieved by the second folded portion 2062 of the folded portion 206.
  • the backlight module of the present invention can effectively protect other components such as LEDs on the side of the light guide plate from being expanded and crushed by the light guide plate by using the high-strength folding portion and the positioning member.
  • the backing block of the invention makes the positioning of each optical film very simple, and at the same time simplifies the assembling operation of the backing block and the liquid crystal module, and the positioning strength of the light guiding plate and the optical film is ensured, and the positioning is accurate.
  • the number of the folded portion and the additional folded portion are both in the two embodiments herein, the present invention is obviously not limited thereto, and those skilled in the art can set more according to specific needs. A number of folds and additional folds, differently configured folds and additional folds.

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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)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种背光模块，包括背板（205）、定位组件及背光组件，定位组件用于将背光组件固定在背板（205）上，且定位组件包括位于背板（205）的角部的定位件（204）和设于背板（205）上的翻折部（206），定位件（204）粘接在背板（205）上。该背光模块利用翻折部（206）定位导光板（202）和光学膜片（201），便于组装和拆卸，同时又能有效保护导光板（202）侧部的其他零部件例如LED不被导光板膨胀压坏。还提供了一种液晶模组。

Description

一种背光模块及液晶模组 技术领域
本发明属于液晶平板显示技术领域， 更具体地涉及一种背光模块及具备该背 光模块的液晶模组。 背景技术
众所周知， 液晶模组主要包括前框、 液晶面板、 背光模块三大部分。 其中背 光模块包括背板、 光源、 反射片、 导光板、 光学膜片等。 传统上， 背光模块的导 光板、 光学膜片通过位于背板的四角的定位件进行固定。 具体而言， 如图 1所示， 通过在定位件 104上设置卡勾 101 ,在背板 108上开设与卡勾 101配合的定位孔（未 标示）， 进而通过定位件 104上的台阶定位导光板 106。 为保障光学膜片 103的固 定强度， 通常在定位件 104上设有销轴 105, 相应地光学膜片 103上开有与销轴 105插接配合的通孔， 以此方式定位和悬挂光学膜片 103。 考虑到导光板 106的膨 胀， 定位件 104选用的材质一般为带有弹性的橡胶。 然而， 弹性的导光板 106往 往会由于膨胀碰到其它零部件（例如位于导光板 106侧部的 LED等背光光源）， 存在其它零部件被挤压而损伤的担心。 发明内容
本发明的目的在于， 提供一种背光模块， 其能够定位导光板、 光学膜片， 且 防止导光板膨胀压坏位于导光板侧部的其它零部件。
本发明通过如下技术方案实现： 一种背光模块， 其中， 所述背光模块包括背 板、 定位组件及背光组件， 所述定位组件用于将所述背光组件固定在所述背板上， 且所述定位组件包括位于所述背板的角部的定位件和设于所述背板上的翻折部， 所述定位件粘接在所述背板上。
作为上述技术方案的进一步改进， 所述翻折部一体地形成在所述背板的侧部 且向内翻折。
作为上述技术方案的进一步改进， 所述翻折部包括向所述背板内侧延伸的第 一翻折部、 以及由所述第一翻折部末端向上延伸的第二翻折部， 所述第二翻折部 穿出所述定位件。 作为上述技术方案的进一步改进， 所述背光组件包括依次叠加在所述定位件 上的反射片、 导光板及光学膜片。
作为上述技术方案的进一步改进， 所述光学膜片上设有通孔， 所述第二翻折 部穿出所述光学膜片上的通孔。
作为上述技术方案的进一步改进， 所述定位组件还包括附加翻折部， 所述附 加翻折部一体地形成在所述背板的侧部且向先内延伸后向上延伸， 所述附加翻折 部与所述背光模块的背光光源位于同一侧以防止所述背光组件挤压所述背光光 源。
作为上述技术方案的进一步改进， 所述翻折部与所述附加翻折部位于所述背 板的不同侧部， 且所述翻折部与所述附加翻折部的形状相同。
本发明还提供了一种液晶模组， 其中， 所述液晶模组包括背光模块、 液晶面 板以及扣合在所述背板上的前框， 所述背光模块包括背板、 定位组件及背光组件， 所述定位组件用于将所述背光组件固定在所述背板上， 且所述定位组件包括位于 所述背板的角部的定位件和设于所述背板上的翻折部， 所述定位件粘接在所述背 板上。
作为上述技术方案的进一步改进， 所述液晶模组还包括设置在所述前框和背 板之间的胶框， 所述液晶面板卡合于所述前框和胶框之间， 且所述液晶面板位于 所述背光组件的外侧。
作为上述技术方案的进一步改进， 所述翻折部一体地形成在所述背板的侧部 且向内翻折。
作为上述技术方案的进一步改进， 所述翻折部包括向所述背板内侧延伸的第 一翻折部、 以及由所述第一翻折部末端向上延伸的第二翻折部， 所述第二翻折部 穿出所述定位件。
作为上述技术方案的进一步改进， 所述背光组件包括依次叠加在所述定位件 上的反射片、 导光板及光学膜片。
作为上述技术方案的进一步改进， 所述光学膜片上设有通孔， 所述第二翻折 部穿出所述光学膜片上的通孔。
作为上述技术方案的进一步改进， 所述定位组件还包括附加翻折部， 所述附 加翻折部一体地形成在所述背板的侧部且向先内延伸后向上延伸， 所述附加翻折 部与所述背光模块的背光光源位于同一侧以防止所述背光组件挤压所述背光光 源。
作为上述技术方案的进一步改进， 所述翻折部与所述附加翻折部位于所述背 板的不同侧部， 且所述翻折部与所述附加翻折部的形状相同。
本发明的有益效果是： 根据本发明的背光模块， 其中， 所述定位组件用于将 所述背光组件固定在所述背板上， 且所述定位组件包括位于所述背板的角部的定 位件和设于所述背板上的翻折部， 本发明的背光模块利用强度较高的翻折部， 定 位背光组件， 便于组装和拆卸， 同时又能配合定位件， 便能有效保护导光板侧部 的其他零部件例如 LED不被导光板膨胀压坏， 而且， 所述定位件粘接在所述背板 上， 避免了卡勾外露于背板， 导致影响产品外观的情况的出现。
附图说明
图 1是现有背光模块的剖面示意图。
图 2是根据本发明的一个具体实施例的背^莫块的分解示意图。
图 3是图 2的背光模块的组装状态示意图。
图 4是图 3的背光模块的剖面示意图。
图 5是图 3的背光模块的背板上的翻折部的结构示意图。
图 6是本发明的背光模块的变形例的分解示意图。
图 7是图 6的背光模块的组装状态示意图。
具体实施方式
以下结合附图对本发明的具体实施方式进行进一步的说明。
本发明的背光模块包括背板 205、 定位组件及背光组件。 其中， 所述定位组件 用于将所述背光组件固定在所述背板 205上。 具体而言， 如图 2至图 4所示， 本 实施例中， 所述定位组件包括位于所述背板 205的角部的定位件 204和设于所述 背板 205上的翻折部 206。 定位件 204作为一种中间件而存在， 其作用包括将背光 组件固定在背板 205上。
本实施例中， 所述定位件 204粘接在所述背板 205上。 如图 4所示， 定位件 204的底面设置背胶， 与背板 205的内表面粘结。 与图 7所示的现有的定位件的固 定方式相比， 本发明的背光模块避免了卡勾外露于背板， 导致影响产品外观的情 况的出现。
如图 5所示， 所述翻折部 206一体地形成在所述背板 205的侧部且向内翻折。 由于所述翻折部 206一体地形成在所述背板 205的侧部， 所以翻折部 206强度较 高。更详细地说，所述翻折部 206包括向所述背板 205内侧延伸的第一翻折部 2061、 以及由所述第一翻折部 2061的末端向上延伸的第二翻折部 2062。 在本实施例中， 所述翻折部 206通过对背板 205的侧壁 2051冲压而成。 即， 所述翻折部 206—体 地形成于背板 205的侧壁 2051上。 第一翻折部 2061的根部与侧壁 2051之间具有 结合部 2060。 所述定位件 204上设有与第二翻折部 2062相配合的穿孔。 第二翻折 部 2062穿出该穿孔对所述背光组件进行悬挂定位。
如图 2和图 4所示， 所述背光组件包括依次叠加在所述定位件 204上的反射 片 203、 导光板 202及光学膜片 201。 其中， 本实施例中， 光学膜片 201的数量为 3片。 导 反202位于反射片 203与光学膜片 201之间。反射片 203压接在定位件 204的台阶面与导光板 202的底面之间。 翻折部 206的所述第二翻折部 2062穿出 所述定位件 204。 而且， 各光学膜片 201上均设有通孔 207, 所述第二翻折部 2062 穿出所述光学膜片 201上的通孔 207。 换言之， 所述第二翻折部 2062依次穿过所 述定位件 204上的穿孔和光学膜片 201上的通孔 207。 且所述第二翻折部 2062的 自由端高于光学膜片 201 (当然更高于反射片 203、 导光板 202 )。 也就是说， 其中 第二翻折部 2062高出背光光源 （例如背光光源 LED ) 出光面， 第二翻折部 2062 的强度较高， 能够抵挡住导光板 202侧部的膨胀位移， 防止其膨胀挤压导光板侧 部的零部件。 亦即， 可以对导光板 202进行定位， 防止导光板 202膨胀而压坏背 光光源等位于导光板 202侧部的零部件。 由此， 通过定位件 204对反射片 203、 导 光板 202进行定位后， 将光学膜片 201放置于导光板 202上， 光学膜片 201的通 孔 207与第二翻折部 2062插接配合， 进而对各光学膜片 201进行定位。
下面结合图 6和图 7介绍本发明的背光模块的变形例。 其中， 图 6是本发明 的背光模块的变形例的分解示意图。 图 7是图 6的背光模块的组装状态示意图。 与图 2显示的实施例相比， 在图 6所示变形例中， 所述定位组件还包括附加翻折 部 306, 其他结构实质相同。 所述附加翻折部 306形成在所述背板 205且向先内延 伸后向上延伸。如图 6和图 7所示附加翻折部 306与所述背光模块的背光光源 400 位于同一侧， 以防止所述背光组件的导光板 202膨胀挤压所述背光光源 400。 本变 形例中， 背光光源 400为 LED灯条（LED light bar )。 从图中可以看出， 所述翻折 部 206与所述附加翻折部 306位于所述背板 205的不同侧部。 如图 6所示， 附加 翻折部 306位于背光光源 400的一侧， 翻折部 206位于与背光光源 400的所在一 侧垂直的相邻侧。 本发明的背光模块中， 所述翻折部 206的形状与所述附加翻折 部 306的形状可以相同， 由此可以统一进行加工。 如图 7所示， 附加翻折部 306 位于定位件 204的内侧 ,且导光板 202的外侧 , 即附加翻折部 306位于定位件 204 与导光板 202之间。 根据本变形例， 附加翻折部 306能够利用其自身强度更直接 地抵挡住导光板 202侧部的膨胀位移， 防止其膨胀挤压背光光源 400。
本发明还提供了一种液晶模组。 如图 4所示， 所述液晶模组包括上述的背光 模块、 液晶面板 210以及扣合在所述背板 205上的前框 208。 所述液晶模组还包括 设置在所述前框 208和背板 205之间的胶框 209。所述液晶面板 210卡合于所述前 框 208和胶框 209之间， 且所述液晶面板 210位于所述背光组件的外侧。
如上所述， 本发明的背光模块中， 在背板 205的侧壁 2051上成型一个或多个 翻折部 206。 定位件 204上开设与翻折部 206相配合的穿孔。将定位件 204插入背 板 205上的翻折部 206对导光板 202进行定位的同时， 还可利用翻折部 206的第 二翻折部 2062实现对光学膜片 201的定位。 本发明的背光模块， 利用强度较高的 翻折部， 配合定位件， 便能有效保护导光板侧部的其他零部件例如 LED不被导光 板膨胀压坏。 而且， 本发明的背^莫块， 使得各光学膜片的定位非常简单， 同时 简化了背^莫块及液晶模组组装操作， 且导光板、 光学膜片定位强度得到保证， 定位精确。 虽然， 本文中的两个实施例中， 所述翻折部与所述附加翻折部的个数 均为一个， 但本发明显然不限于此， 本领域普通技术人员可以根据具体需要设置 更多数量的翻折部及附加翻折部、 结构不同的翻折部及附加翻折部。
以上具体实施方式对本发明进行了详细的说明， 但这些并非构成对本发明的 限制。 本发明的保护范围并不以上述实施方式为限， 但凡本领域普通技术人员根 据本发明所揭示内容所作的等效修饰或变化， 皆应纳入权利要求书中记载的保护 范围内。

Claims

权 利 要 求 书
1. 一种背光模块， 其中， 所述背光模块包括背板、 定位组件及背光组件， 所 述定位组件用于将所述背光组件固定在所述背板上， 且所述定位组件包括位于所 述背板的角部的定位件和设于所述背板上的翻折部， 所述定位件粘接在所述背板 上。
2.根据权利要求 1所述的背光模块， 其中， 所述翻折部一体地形成在所述背 板的侧部且向内翻折。
3.根据权利要求 2所述的背光模块， 其中， 所述翻折部包括向所述背板内侧 延伸的第一翻折部、 以及由所述第一翻折部末端向上延伸的第二翻折部， 所述第 二翻折部穿出所述定位件。
4.根据权利要求 3所述的背光模块， 其中， 所述背光组件包括依次叠加在所 述定位件上的反射片、 导 反及光学膜片。
5.根据权利要求 4所述的背光模块， 其中， 所述光学膜片上设有通孔， 所述 第二翻折部穿出所述光学膜片上的通孔。
6.根据权利要求 1至 5任一项所述的背光模块， 其中， 所述定位组件还包括 附加翻折部， 所述附加翻折部一体地形成在所述背板的侧部且向先内延伸后向上 延伸， 所述附加翻折部与所述背光模块的背光光源位于同一侧以防止所述背光组 件挤压所述背光光源。
7.根据权利要求 6所述的背光模块， 其中， 所述翻折部与所述附加翻折部位 于所述背板的不同侧部， 且所述翻折部与所述附加翻折部的形状相同。
8.一种液晶模组， 其中， 所述液晶模组包括背光模块、 液晶面板以及扣合在 所述背板上的前框， 所述背光模块包括背板、 定位组件及背光组件， 所述定位组 件用于将所述背光组件固定在所述背板上， 且所述定位组件包括位于所述背板的 角部的定位件和设于所述背板上的翻折部， 所述定位件粘接在所述背板上。
9.根据权利要求 8所述的液晶模组， 其中， 所述液晶模组还包括设置在所述 前框和背板之间的胶框， 所述液晶面板卡合于所述前框和胶框之间， 且所述液晶 面板位于所述背光组件的外侧。
10.根据权利要求 8所述的液晶模组， 其中， 所述翻折部一体地形成在所述背 板的侧部且向内翻折。
11.根据权利要求 10所述的液晶模组， 其中， 所述翻折部包括向所述背板内 侧延伸的第一翻折部、 以及由所述第一翻折部末端向上延伸的第二翻折部， 所述 第二翻折部穿出所述定位件。
12.根据权利要求 11所述的液晶模组， 其中， 所述背光组件包括依次叠加在 所述定位件上的反射片、 导光板及光学膜片。
13.根据权利要求 12所述的液晶模组， 其中， 所述光学膜片上设有通孔， 所 述第二翻折部穿出所述光学膜片上的通孔。
14.根据权利要求 13所述的液晶模组， 其中， 所述定位组件还包括附加翻折 部， 所述附加翻折部一体地形成在所述背板的侧部且向先内延伸后向上延伸， 所 述附加翻折部与所述背光模块的背光光源位于同一侧以防止所述背光组件挤压所 述背光光源。
15.根据权利要求 14所述的液晶模组， 其中， 所述翻折部与所述附加翻折部 位于所述背板的不同侧部， 且所述翻折部与所述附加翻折部的形状相同。
PCT/CN2013/078526 2013-06-07 2013-06-29 一种背光模块及液晶模组 WO2014194543A1 (zh)

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