CN102809841B - 液晶显示装置 - Google Patents

液晶显示装置 Download PDF

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CN102809841B
CN102809841B CN201210299002.6A CN201210299002A CN102809841B CN 102809841 B CN102809841 B CN 102809841B CN 201210299002 A CN201210299002 A CN 201210299002A CN 102809841 B CN102809841 B CN 102809841B
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backboard
liquid crystal
chip
crystal indicator
display panel
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CN102809841A (zh
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陈仕祥
俞刚
杨瑞连
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to PCT/CN2012/080605 priority patent/WO2014029114A1/zh
Priority to US13/703,364 priority patent/US20150153607A1/en
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    • 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
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    • G02F1/1345—Conductors connecting electrodes to cell terminals
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    • G—PHYSICS
    • G02—OPTICS
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    • 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
    • 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
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • 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
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    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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
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    • 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
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  • Optics & Photonics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本发明公开了一种液晶显示装置，包括显示面板、背光膜块、软性电路板及芯片。所述背光膜块包括背板，所述背板面对所述显示面板具有突起，且所述背板的底面具有对应所述突起的凹部。所述软性电路板电性连接于所述显示面板的一侧边，并弯折至所述背板的底面。所述芯片固定于所述软性电路板上，且位于所述背板的所述凹部内，使得芯片远离位于导光板一侧的光源，克服了窄边框液晶显示装中的芯片过热的问题。

Description

液晶显示装置
【技术领域】
本发明涉及一种显示装置，特别涉及一种实现窄边框(bezel)的液晶显示装置。
【背景技术】
传统的薄膜晶体管液晶显示器(Thin Film Transistor LiquidCrystal Display，TFT-LCD)包括液晶面板、驱动模块及背光模块。驱动模块用于驱动液晶面板显示画面。请参照图1，图1为现有技术的未包含栅极印刷电路板(gate PCB)的液晶面板。所述液晶面板100连接多个资料覆晶薄膜COF(Chip On Flex)载带120及多个栅极COF载带140。所述多个资料COF载带120连接一资料印刷电路板(data PCB)150，且所述多个资料COF载带120上具有资料驱动芯片125。所述栅极COF载带140上具有栅极驱动芯片145。
请参照图2，图2为现有技术中窄边框液晶显示器的局部剖面示意图。背光模块包括金属背板11、胶框12、导光板13、反射片14、光学膜片组15及光源16等。导光板13及反射片14设置于金属背板11内，光源16设置在金属背板11上且位于导光板13的一侧，光学膜片组15叠置在导光板的上方，所述液晶面板100设置于所述胶框12上。前框17设置在所述胶框侧面，并与该胶框12夹持固定液晶面板100，以保护液晶面板100。
由于液晶显示器窄边框化的趋势，栅极COF载带140常会弯折至背光模块的一侧以降低前框17在液晶面板100上的宽度。然而，因为上述窄边框的设计，使得栅极驱动芯片145与光源16两者距离非常靠近，栅极驱动芯片145可能会受到光源16发热的影响，而存在过热的问题，进而降低了产品的可靠度。
【发明内容】
本发明的一个目的在于提供一种液晶显示装置，其能克服现有窄边框技术中栅极驱动芯片与光源两者距离过近而导致过热的问题，而实现高可靠度的窄边框液晶显示装置。
为解决上述问题，本发明提供了一种液晶显示装置，包括显示面板、背光膜块、软性电路板及芯片。所述背光膜块包括背板，所述背板面对所述显示面板具有突起，且所述背板的底面具有对应所述突起的凹部，所述背光膜块还具有设置在所述背板上的导光板及位于所述导光板一侧的光源。所述软性电路板电性连接于所述显示面板的一侧边，并弯折至所述背板的底面。所述芯片固定于所述软性电路板上，且位于所述背板的所述凹部内，使得所述芯片远离位于所述导光板一侧的光源。
在本优选实施例的液晶显示装置中，所述背光膜块还具有设置在所述背板上的反射片，所述突起用于推抵所述反射片，使得所述反射片紧靠所述导光板。另外，所述背光膜块还具有位于所述导光板一侧的光源。所述背板还具有一垂直所述显示面板的侧壁，所述光源固定于所述侧壁上。优选的，所述突起为梯形状。优选的，所述软性电路板紧靠所述背板的所述底面。
在本优选实施例的液晶显示装置中，所述软性电路板为COF载带。优选的，所述COF载带为栅极COF载带，且所述芯片为栅极驱动芯片。
在本优选实施例的液晶显示装置中，所述背板的所述凹部为平行所述显示面板的所述侧边的条状凹部。优选的，所述背板为金属背板，且所述突起由冲压所制成。
本发明相对现有技术，在背板上设置有凹部，因此可将COF载带绕到背板底面的凹部，使得芯片远离位于导光板一侧的光源，克服了芯片过热的问题。此外，上述背板的突起也具有使反射片紧靠导光板的功能，因此可降低背光模块的厚度。
为让本发明的上述内容能更明显易懂，下文特举优选实施例，并配合所附图式，作详细说明如下：
【附图说明】
图1为现有技术的未包含栅极印刷电路板的液晶面板；
图2为现有技术中窄边框液晶显示器的局部剖面示意图；
图3为本发明一优选实施例的液晶显示装置的局部剖面示意图；
图4为本发明优选实施例的背板的底面示意图。
【具体实施方式】
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。在不同图示中，相同的参考标号表示相同或相似的元件。
参照图3，图3为本发明一优选实施例的液晶显示装置的局部剖面示意图。本优选实施例的液晶显示装置10主要包括显示面板100、背光膜块200、软性电路板300、芯片350、及前框17。
在本实施例中，所述显示面板100包括上基板120、下基板140及上下基板之间的液晶层(图未示)。值得注意的是，上基板120与下基板140的外表面各设有一偏光片160。
如图3所示，所述背光膜块200主要包括背板210、反射片220、导光板230、光学膜片组240、光源250及胶框260。所述背板210面对所述显示面板100具有突起212，且所述背板210的底面214具有对应所述突起212的凹部216。在本实施例中，所述突起212为梯形状。然而，在其他实施例中，所述突起212亦可为其他形状，例如半圆形、矩形、三角形等。
所述反射片220及导光板230设置在所述背板210上，所述突起212用于推抵所述反射片220，使得所述反射片220紧靠所述导光板230。由上可知，所述反射片220无需使用胶与导光板230黏合，因此反射片220及导光板230之间可更紧密靠近，以减少光的损失。更进一步，反射片220与导光板230并无胶的厚度，因而可降低背光膜块200的厚度。
如图3所示，所述背光膜块200还具有位于所述导光板230一侧的光源250。优选的，所述光源250为发光二极管。所述背板210还具有一垂直所述显示面板100的侧壁218，所述光源250固定于所述侧壁218上。
光学膜片组240叠置在导光板230的上方，所述液晶面板100设置于所述胶框260上，其中液晶面板100与胶框260之间具有一缓冲垫265以降低外界对液晶面板100的冲击影响。前框17设置在所述胶框260侧面，并与该胶框12夹持固定液晶面板100，以保护液晶面板100。
所述软性电路板300的一端电性连接于所述显示面板100的一侧边102，并弯折至所述背板210的底面214。优选的，所述软性电路板300紧靠所述背板210的所述底面214。所述芯片350固定于所述软性电路板300上，且位于所述背板210的所述凹部216内。在本优选实施例的液晶显示装置10中，所述软性电路板300为COF载带。优选的，所述COF载带为栅极COF载带，且所述芯片350为栅极驱动芯片。然而，在其他实施例中，所述COF载带为源极COF载带，且所述芯片350为源极驱动芯片。
值得注意的是，与现有技术相比，所述芯片350是设置在COF载带的反面，使得COF载带弯折至所述背板210的凹部216时，芯片350是朝凹部216内设置，即容纳于凹部216内。
请参照图4，图4为本发明优选实施例的背板的底面示意图。在本优选实施例的液晶显示装置10中，所述背板210的所述凹部216为平行所述显示面板10的所述侧边102的条状凹部。优选的，所述条状凹部设置在对应显示面板10的四侧，以固定反射片220。在本实施例中，所述软性电路板300为三个栅极COF载带，所述芯片350为对应的三个栅极驱动芯片，栅极COF载带弯折到背板210的底面214，使得栅极驱动芯片容纳于条状凹部内。在另一实施例中，所述软性电路板300可为多个源极COF载带，所述芯片350为对应的多个源极驱动芯片，源极COF载带弯折到背板210的底面214，使得源极驱动芯片容纳于另一侧的条状凹部内。
值得一提的是，所述背板210为金属背板，且所述突起212/凹部216由冲压所制成。然而，本发明并不限制背板210的材质。
综上所述，本发明在背板210上设置有凹部216，因此可将COF载带绕到背板210底面214的凹部216，使得芯片350远离位于导光板230一侧的光源250，克服了现有窄边框技术中芯片过热的问题。此外，上述背板210的突起212也具有使反射片220紧靠导光板230的功能，因此可降低背光模块200的厚度。
虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (8)

1.一种液晶显示装置，其特征在于，包括：
显示面板；
背光膜块，所述背光膜块包括背板，所述背板面对所述显示面板具有突起，且所述背板的底面具有对应所述突起的凹部，所述背光膜块还具有设置在所述背板上的导光板及位于所述导光板一侧的光源，所述背板还具有一垂直所述显示面板的侧壁，所述光源固定于所述侧壁上；
软性电路板，电性连接于所述显示面板的一侧边，并弯折至所述背板的底面；及
芯片，固定于所述软性电路板上，且位于所述背板的所述凹部内，使得所述芯片远离位于所述导光板一侧的光源。
2.根据权利要求1所述的液晶显示装置，其特征在于，所述背光膜块还具有设置在所述背板上的反射片，所述突起用于推抵所述反射片，使得所述反射片紧靠所述导光板。
3.根据权利要求1所述的液晶显示装置，其特征在于，所述突起为梯形状。
4.根据权利要求1所述的液晶显示装置，其特征在于，所述软性电路板紧靠所述背板的所述底面。
5.根据权利要求1所述的液晶显示装置，其特征在于，所述软性电路板为COF载带。
6.根据权利要求5所述的液晶显示装置，其特征在于，所述COF载带为栅极COF载带，且所述芯片为栅极驱动芯片。
7.根据权利要求1所述的液晶显示装置，其特征在于，所述背板的所述凹部为平行所述显示面板的所述侧边的条状凹部。
8.根据权利要求1所述的液晶显示装置，其特征在于，所述背板为金属背板，且所述突起由冲压所制成。
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