WO2014075321A1 - 液晶显示装置 - Google Patents

液晶显示装置 Download PDF

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Publication number
WO2014075321A1
WO2014075321A1 PCT/CN2012/084855 CN2012084855W WO2014075321A1 WO 2014075321 A1 WO2014075321 A1 WO 2014075321A1 CN 2012084855 W CN2012084855 W CN 2012084855W WO 2014075321 A1 WO2014075321 A1 WO 2014075321A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
conductive
display panel
substrate
Prior art date
Application number
PCT/CN2012/084855
Other languages
English (en)
French (fr)
Inventor
张彦学
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 DE112012007129.8T priority Critical patent/DE112012007129T5/de
Priority to US13/806,773 priority patent/US9030626B2/en
Publication of WO2014075321A1 publication Critical patent/WO2014075321A1/zh

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Classifications

    • 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
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/22—Antistatic materials or arrangements

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a liquid crystal display device. Background technique
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal displays, which include a liquid crystal panel and a backlight module.
  • the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates, control the liquid crystal molecules to change direction by energizing the circuit of the glass substrate, and refract the light of the backlight module to produce a picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is required to normally display the image. Therefore, the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-lit backlight module and a direct-lit backlight module according to the incident position of the light source.
  • an illuminating light source such as a CCFL (Cold Cathode Fluorescent Lam) or an LED (Light Emitting Diode) is disposed behind the liquid crystal panel, and a surface light source is directly formed and supplied to the liquid crystal panel.
  • the side-lit backlight module has an illumination light source such as an LED light bar disposed on the edge of the back panel behind the liquid crystal panel, and the light emitted by the light source enters the optical film group from the light incident surface on the optical film group side. After being reflected and diffused, the light exits from the optical film set to form a surface light source for the liquid crystal panel.
  • the liquid crystal display device generally includes: a backlight module 100 , a plastic frame 300 disposed on the backlight module 100 , a liquid crystal display panel 500 disposed on the plastic frame 300 , and a front cover disposed on the liquid crystal display panel 500 .
  • the backlight module 100 includes a backplane 102, an optical film set 104 disposed in the backplane 102, and a backlight (not shown) disposed in the backplane 102.
  • the backlight module 100 is used for liquid crystal
  • the display panel 500 provides a uniform surface light source.
  • the plastic frame 300 is used to carry the liquid crystal display panel 500.
  • the front cover 700 fixes the liquid crystal display panel 500 in the plastic frame 300.
  • the liquid crystal display panel 500 includes a TFT (thin film transistor) substrate 502. a CF (color filter) substrate 504 that is disposed to face the TFT substrate 502, and a liquid crystal (not shown) that is disposed between the TFT substrate 502 and the CF substrate 504.
  • the TFT substrate 502 is bonded to the CF substrate 504. Thereafter, a gap position 524 is formed at an edge position of the TFT substrate 502 for attaching a flexible wiring board (COF) 526 to supply a driving voltage to the liquid crystal display panel 500.
  • COF flexible wiring board
  • the front case 700 is generally made of a plastic material to control the production cost
  • the back plate 102 is generally made of a metal material such as iron to ensure the strength of the backlight module 100. Liquid of this structure
  • the crystal display device causes the static electricity generated by the flexible wiring board 526 to be unreleasable, and the problem of electrostatic breakdown of the flexible wiring board 526 and the IC (semiconductor element) (not shown) may occur, thereby affecting the quality of the liquid crystal display device.
  • the Chinese patent discloses a liquid crystal display device (shown in FIG. 2), which includes, in order from the outside to the inside, a front case 100, a plastic frame 300, and a back plate 500 which are fixed to each other.
  • the liquid crystal panel 700' is sandwiched between the front case 100 and the plastic frame 300.
  • the front case 100 is made of an insulating material, and the surface of the front case 100 is provided with a conductive film 102'.
  • the plate 500 is made of a conductive material, and the conductive film 102 is connected between the conductive film 102 and the back plate 500.
  • the conductive film 102 is electrically connected to the back plate 500 through the conductive member 502.
  • the conductive film 102 is connected to the back plate 500 of the conductive material through the conductive member 502, and the static electricity generated by the flexible circuit board (not shown) can be discharged to the back plate 500 through the conductive film 102, thereby effectively avoiding The board and IC are electrostatically broken down.
  • the conductive parts connecting the front case and the back plate may cause the cost advantage of the plastic front case to decrease; 2. Sticking the conductive parts may cause waste of labor costs;
  • the present invention provides a liquid crystal display device, including: a backlight module, a plastic frame disposed on the backlight module, a liquid crystal display panel disposed on the plastic frame, and a front case disposed on the liquid crystal display panel;
  • the backlight module includes a back plate, a backlight disposed in the back plate, and an optical film set disposed in the back plate, wherein the back plate is made of a conductive material, the front plate
  • the shell is made of a plastic material
  • the conductive component includes a first conductive portion and a second conductive portion connected to the first conductive portion, the first conductive portion is located between the front shell and the liquid crystal display panel and is opposite to the liquid crystal display panel Contact, a screw passes through the second conductive portion of the conductive member, the front case and the plastic frame are then locked to the back plate.
  • the back plate includes a bottom plate and a plurality of side plates vertically connected to the bottom plate, and at least one of the free ends of the one side plate is provided with a connecting plate vertically connected to the one side plate, the connecting plate is provided with a threaded hole, and the front shell pair
  • the threaded hole is provided with a first through hole
  • the second conductive portion of the conductive element is provided with a second through hole corresponding to the first through hole
  • the plastic frame is provided with a third through hole corresponding to the threaded hole
  • the front case includes a top plate having an opening, and the first conductive portion and the second conductive portion of the conductive element form a U-shaped groove, and the conductive element is engaged with the top plate through the U-shaped groove, the first A conductive portion is electrically connected to the liquid crystal display panel on the inner side of the top plate, and the second conductive portion is disposed on the outer side of the top plate and electrically connected to the back plate by screws.
  • the first conductive portion is an elongated metal piece
  • the second conductive portion is a two-plate metal arm disposed at two ends of the first conductive portion.
  • the liquid crystal display panel includes a TFT substrate, a CF substrate disposed opposite to the TFT substrate, and a liquid crystal disposed between the TFT substrate and the CF substrate.
  • the TFT substrate and the CF substrate are bonded together to form a gap at the edge of the CF substrate.
  • a flexible circuit board is attached to the gap position, the flexible circuit board is used to provide a driving voltage for the liquid crystal display panel;
  • the liquid crystal display panel further includes a first surface that is attached to the TFT substrate away from the surface of the CF substrate The polarizer and the second polarizer attached to the CF substrate away from the surface of the TFT substrate.
  • the plastic frame is made of a plastic material.
  • the conductive element is made of aluminum.
  • the optical film set includes a light guide plate, a reflection sheet disposed on a side of the light guide plate facing the back plate, and a brightness enhancement sheet disposed on the other side of the light guide plate.
  • the optical film set includes a diffuser plate and a brightness enhancement plate disposed on a side of the diffusion plate away from the back plate. It also includes a rear case that is provided in cooperation with the front case.
  • the present invention also provides a liquid crystal display device, comprising: a backlight module, a plastic frame disposed on the backlight module, a liquid crystal display panel disposed on the plastic frame, a front case disposed on the liquid crystal display panel, and a front case
  • the backlight module includes a back plate, a backlight disposed in the back plate, and an optical film set disposed in the back plate, wherein the back plate is made of a conductive material, and the front case is made of a plastic material
  • the conductive element includes a first conductive portion and a second conductive portion connected to the first conductive portion, the first conductive portion is located between the front case and the liquid crystal display panel and is in contact with the liquid crystal display panel, a screw Passing through the second conductive portion of the conductive member, the front shell and the plastic frame are then locked to the back plate;
  • the backboard includes a bottom plate and a plurality of side plates vertically connected to the bottom plate, and at least one of the free ends of the one side plate is provided with a connecting plate vertically connected to the one side plate, and the connecting plate is provided with a threaded hole, the front plate
  • the second through hole of the conductive element is opposite to the first through hole, and the second through hole is corresponding to the threaded hole. The screw is inserted into the threaded hole after passing through the second through hole, the first through hole and the third through hole;
  • the front cover includes a top plate having an opening, and the first conductive portion and the second conductive portion of the conductive element form a U-shaped groove, and the conductive element is engaged with the top plate through the U-shaped groove.
  • the first conductive portion is electrically connected to the liquid crystal display panel on the inner side of the top plate, and the second conductive portion is disposed on the outer side of the top plate and electrically connected to the back plate by screws;
  • the first conductive portion is an elongated metal piece, and the second conductive portion is a two-plate metal arm disposed at two ends of the first conductive portion;
  • the liquid crystal display panel includes a TFT substrate, a CF substrate disposed opposite to the TFT substrate, and a liquid crystal disposed between the TFT substrate and the CF substrate.
  • the TFT substrate is bonded to the CF substrate and formed at an edge of the CF substrate.
  • a flexible circuit board is used to provide a driving voltage to the liquid crystal display panel;
  • the liquid crystal display panel further includes a film attached to the surface of the TFT substrate away from the surface of the CF substrate. a first polarizer and a second polarizer attached to the CF substrate away from the surface of the TFT substrate;
  • the plastic frame is made of a plastic material
  • the conductive element is made of aluminum
  • the optical film set includes a light guide plate, a reflective sheet disposed on a side of the light guide plate facing the back plate, and a brightness enhancement sheet disposed on the other side of the light guide plate;
  • It also includes a rear case that is provided in cooperation with the front case.
  • the first conductive portion of the conductive member is electrically connected to the liquid crystal display panel by providing a conductive member on the front case, and the second conductive portion is electrically connected to the back plate through the screw and the back plate.
  • the connection is made to form a path, effectively discharge static electricity, avoid electrostatic breakdown of the flexible circuit board and the IC, prolong the service life of the liquid crystal display device, and has a simple structure and easy assembly, thereby effectively reducing the production cost.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal display device
  • FIG. 2 is a schematic structural view of another conventional liquid crystal display device
  • FIG. 3 is a schematic structural view of a liquid crystal display device of the present invention.
  • FIG. 4 is a schematic perspective view of a conductive member of the present invention. detailed description
  • the present invention provides a liquid crystal display device, including: a backlight module 2, a plastic frame 4 disposed on the backlight module 2, and a liquid crystal display panel 6 disposed on the plastic frame 4.
  • a liquid crystal display panel 6 disposed on the plastic frame 4.
  • the backlight module 2 includes a back plate 22, a backlight (not shown) disposed in the back plate 22, and an optical film set 24 disposed in the back plate 22.
  • the back plate 22 is made of a conductive material, and includes a bottom plate 222 and a plurality of side plates 224 vertically connected to the bottom plate 222.
  • the free end of at least one side plate 224 is provided with a connecting plate 226 vertically connected to the one side plate 224.
  • the connecting plate 226 is provided with a threaded hole 228.
  • the front case 8 is made of a plastic material and includes a top plate 800 having an opening 80.
  • the top plate 800 is provided with a first through hole 82 corresponding to the threaded hole 228.
  • the front case 8 is locked to the back plate 22 by a screw 802. on.
  • the conductive element 820 is disposed on the front case 8, and the conductive element 820 includes a first conductive portion.
  • the first conductive portion 822 is electrically connected to the liquid crystal display panel 6 on the inner side of the front case 8 , and the second conductive portion 824 is passed through
  • the screw 802 is electrically connected to the back plate 22 to form a passage to effectively discharge static electricity, thereby preventing electrostatic breakdown of the flexible circuit board (not shown) and the IC (not shown).
  • the conductive element 820 is a conductive metal sheet, which is made of aluminum.
  • the first conductive portion 822 is an elongated metal piece
  • the second conductive portion is 824 is a two-plate metal arm disposed at both ends of the first conductive portion 822.
  • the first conductive portion 822 and the second conductive portion 824 form a U-shaped groove 826.
  • the conductive member 820 is engaged with the top plate 800 through the U-shaped groove 826.
  • the first conductive portion 822 is disposed on the first conductive portion 822.
  • the inside of the top plate 800 of the front case 8 is electrically connected to the liquid crystal display panel 6.
  • the second conductive portion 824 is located outside the top plate 800 of the front case 8 and is electrically connected to the back plate 22 by screws 802.
  • the second conductive portion 824 of the conductive member 820 is provided with a second through hole 828 corresponding to the first through hole 82.
  • the screw 802 is sequentially inserted through the second through hole 828 and the first through hole 82. Threaded hole 228.
  • the plastic frame 4 is made of a plastic material for carrying the liquid crystal display panel 6 , and the corresponding first through hole 82 is provided with a third through hole 42 , and the screw 802 sequentially passes through the second conductive portion 824 .
  • the second through hole 828, the first through hole 82 on the front case 8, and the third through hole 42 of the plastic frame 4 are locked in the threaded hole 228.
  • the liquid crystal display panel 6 includes a TFT substrate 62, a CF substrate 64 that is disposed to face the TFT substrate 62, and a liquid crystal (not shown) provided between the TFT substrate 62 and the CF substrate 64.
  • a gap position 642 is formed at an edge position of the CF substrate 64, and a flexible wiring board (not shown) is bonded to the gap position 642 for the flexible wiring board.
  • the driving voltage is supplied to the liquid crystal display panel 6 to drive the liquid crystal molecules to realize the screen display.
  • the liquid crystal display panel 6 further includes a surface of the TFT substrate 62 that is attached to the surface of the TFT substrate 62 away from the CF substrate 64.
  • the first polarizer 66 and the second polarizer 68 attached to the CF substrate 64 away from the surface of the TFT substrate 62.
  • the backlight module 2 is a side-lit backlight module
  • the optical film set 24 includes a light guide plate 242, a reflective sheet 244 disposed on the side of the light guide plate 242 facing the back plate 22, and The light-increasing sheet 246 is disposed on the other side of the light guide plate 242.
  • the liquid crystal display device of the present invention further includes a rear case 10 which is disposed in cooperation with the front case 8.
  • the front case 8 and the rear case 10 are engaged with each other, and the backlight module 2, the plastic frame 4 and the liquid crystal display are further displayed.
  • the panel 6 is fixed between the front case 8 and the rear case 10, and is assembled into a liquid crystal display device.
  • the backlight module of the present invention can also be a direct type backlight module (not shown).
  • the optical film group includes a diffusion plate and the diffusion plate is disposed away from the back plate. Side enhancements.
  • the liquid crystal display device of the present invention has a conductive member disposed on the front case, the first conductive portion of the conductive member is electrically connected to the liquid crystal display panel, and the second conductive portion is electrically connected to the back plate.
  • the connection forms a path to effectively discharge static electricity, avoids electrostatic breakdown of the flexible circuit board and the IC, prolongs the service life of the liquid crystal display device, and has a simple structure, easy assembly, and an effective reduction in production cost.

Abstract

一种液晶显示装置，包括：背光模组（2）、设于背光模组（2）上的胶框（4）、设于胶框（4）上的液晶显示面板（6）、设于液晶显示面板（6）上的前壳（8）及设于前壳（8）上的导电元件（820）。背光模组（2）包括背板（22）、设于背板（22）内的背光源及设于背板（22）内的光学膜片组（24）。背板（22）由导电材料制成。前壳（8）由塑胶材料制成。导电元件（820）包括第一导通部（822）及连接第一导通部（822）的第二导通部（824）。第一导通部（822）位于前壳（8）与液晶显示面板（6）之间并与液晶显示面板（6）接触，一螺钉（802）穿过导电元件（820）的第二导通部（824）、前壳（8）与胶框（4）后锁合于背板（22）上。通过在前壳上设置导电元件，导电元件的第一导通部与液晶显示面板电性连接，第二导通部通过螺钉与背板电性连接，进而形成通路，有效释放静电，避免静电击穿软性线路板与IC。

Description

液晶显示装置 技术领域
本发明涉及液晶显示领域， 尤其涉及一种液晶显示装置。 背景技术
液晶显示装置 （LCD, Liquid Crystal Display )具有机身薄、 省电、 无 辐射等众多优点， 得到了广泛的应用。 现有市场上的液晶显示装置大部分 为背光型液晶显示器， 其包括液晶面板及背光模组（backlight module ) 。 液晶面板的工作原理是在两片平行的玻璃基板中放置液晶分子， 通过给玻 璃基板的电路通电来控制液晶分子改变方向， 将背光模组的光线折射出来 产生画面。 由于液晶面板本身不发光， 需要借由背光模组提供的光源来正 常显示影像， 因此， 背光模组成为液晶显示装置的关键组件之一。 背光模 组依照光源入射位置的不同分成侧入式背光模组与直下式背光模组两种。 直下式背光模组是将发光光源例如 CCFL(Cold Cathode Fluorescent Lam , 阴极萤光灯管)或 LED(Light Emitting Diode发光二极管)设置在液晶面板后 方， 直接形成面光源提供给液晶面板。 而侧入式背光模组是将发光光源例 如 LED 灯条（lightbar )设于液晶面板侧后方的背板边缘， 发光光源发出 的光线从光学膜片组一侧的入光面进入光学膜片组， 经反射和扩散后从光 学膜片组出光面出射， 以形成面光源提供给液晶面板。
请参阅图 1 , 液晶显示装置一般包括： 背光模组 100、 设于背光模组 100上的胶框 300、 设于胶框 300上的液晶显示面板 500及设于液晶显示 面板 500上的前壳 700, 所述背光模组 100 包括背板 102、 设于背板 102 内的光学膜片组 104、 设于背板 102 内的背光源 （未图示） ， 该背光模组 100用于给液晶显示面板 500提供光照均匀的面光源， 所述胶框 300用于 承载液晶显示面板 500, 前壳 700将液晶显示面板 500 固定于胶框 300 内， 液晶显示面板 500 包括 TFT (薄膜晶体管）基板 502、 与 TFT基板 502相对贴合设置的 CF (彩膜滤光片 )基板 504及设于 TFT基板 502与 CF基板 504之间的液晶 （未图示） ， 该 TFT基板 502与 CF基板 504贴 合后， 在 TFT基板 502边缘位置形成有断差位置 524, 该断差位置 524用 于贴附软性线路板（COF ) 526以为液晶显示面板 500提供驱动电压。
所述前壳 700 —般由塑胶材料制成， 以控制生产成本， 所述背板 102 一般由金属材料制成， 如铁， 以保证背光模组 100 的强度。 该种结构的液 晶显示装置会导致软性线路板 526产生的静电无法释放， 可能出现静电击 穿软性线路板 526与 IC (半导体元件 ) (未图示） 的问题， 进而影响液晶 显示装置的品质。
针对上述问题， 中国专利 （申请号： 201210068995.6 )公开一种液晶 显示装置 （如图 2所示） ， 从外到内依次包括相互配合固定的前壳 100，、 胶框 300，和背板 500，， 所述前壳 100，和胶框 300，之间夹持有液晶面板 700' , 所述前壳 100，采用绝缘材料， 所述前壳 100，的表面设有导电膜 102' , 所述背板 500，采用导电材料， 所述导电膜 102，和背板 500，之间连接 有导电部件 502，， 所述导电膜 102，通过所述导电部件 502，跟所述背板 500， 电连接。 本发明通过导电部件 502，将导电膜 102，和导电材质的背板 500，相 连接， 柔性电路板（未图示）产生的静电可以通过导电膜 102，释放到背板 500，上， 有效避免电路板和 IC的被静电击穿。
上述方案虽然有效解决了静电释放的问题， 但却存在如下问题： 1、 连通前壳和背板的导电部件会造成塑胶前壳的成本优势下降； 2、 粘贴导电部件会造成人力成本的浪费；
3、 导电部件粘贴后， 可能会有脱落的风险， 造成品质上的风险。 发明内容
本发明的目的在于提供一种液晶显示装置， 其能有效释放静电， 使用 寿命长， 且结构简单， 易组装， 利于成本控制。
为实现上述目的， 本发明提供一种液晶显示装置， 包括： 背光模组、 设于背光模组上的胶框、 设于胶框上的液晶显示面板、 设于液晶显示面板 上的前壳及设于前壳上导电元件， 所述背光模组包括背板、 设于背板内的 背光源及设于背板内的光学膜片组， 所述背板由导电材料制成， 所述前壳 由塑胶材料制成， 该导电元件包括第一导通部及连接第一导通部的第二导 通部， 该第一导通部位于前壳与液晶显示面板之间并与液晶显示面板接 触， 一螺钉穿过导电元件的第二导通部、 前壳与胶框后锁合于背板上。
所述背板包括底板及垂直连接底板的数个侧板， 至少一侧板的自由端 设有垂直连接于该一侧板的连接板， 该连接板上设有螺紋孔， 所述前壳对 应该螺紋孔设有第一通孔， 所述导电元件的第二导通部对应该第一通孔设 有第二通孔， 所述胶框对应该螺紋孔设有第三通孔， 所述螺钉依次穿过该 第二通孔、 第一通孔、 第三通孔之后锁合于该螺紋孔内。
所述前壳包括一具有开口的顶板， 所述导电元件的第一导通部与第二 导通部形成一 U形槽， 该导电元件通过该 U形槽卡合于该顶板上， 该第 一导通部设于顶板内侧与液晶显示面板电性连接， 该第二导通部设于顶板 外侧， 通过螺钉与背板电性连接。
所述第一导通部为一长条形的金属片， 所述第二导通部为两个片状的 金属臂， 其设于该第一导通部的两端。
所述液晶显示面板包括 TFT基板、 与 TFT基板相对贴合设置的 CF基 板及设于 TFT基板与 CF基板之间的液晶； 所述 TFT基板与 CF基板贴合 后在 CF 基板边缘位置形成断差位置， 一软性线路板贴合于该断差位置 上， 该软性线路板用于为液晶显示面板提供驱动电压； 所述液晶显示面板 还包括贴合于 TFT基板远离 CF基板表面的第一偏光片及贴合于 CF基板 远离 TFT基板表面的第二偏光片。
所述胶框由塑胶材料制成。
所述导电元件由铝材制成。
所述光学膜片组包括导光板、 设于导光板面向背板一侧的反射片、 及 设于导光板另外一侧的增光片。
所述光学膜片组包括扩散板及设于扩散板远离背板一侧的增光片。 还包括与前壳配合设置的后壳。
本发明还提供一种液晶显示装置， 包括： 背光模组、 设于背光模组上 的胶框、 设于胶框上的液晶显示面板、 设于液晶显示面板上的前壳及设于 前壳上导电元件， 所述背光模组包括背板、 设于背板内的背光源及设于背 板内的光学膜片组， 所述背板由导电材料制成， 所述前壳由塑胶材料制 成， 该导电元件包括第一导通部及连接第一导通部的第二导通部， 该第一 导通部位于前壳与液晶显示面板之间并与液晶显示面板接触， 一螺钉穿过 导电元件的第二导通部、 前壳与胶框后锁合于背板上；
其中， 所述背板包括底板及垂直连接底板的数个侧板， 至少一侧板的 自由端设有垂直连接于该一侧板的连接板， 该连接板上设有螺紋孔， 所述 前壳对应该螺紋孔设有第一通孔， 所述导电元件的第二导通部对应该第一 通孔设有第二通孔， 所述胶框对应该螺紋孔设有第三通孔， 所述螺钉依次 穿过该第二通孔、 第一通孔、 第三通孔之后锁合于该螺紋孔内；
其中， 所述前壳包括一具有开口的顶板， 所述导电元件的第一导通部 与第二导通部形成一 U 形槽， 该导电元件通过该 U 形槽卡合于该顶板 上， 该第一导通部设于顶板内侧与液晶显示面板电性连接， 该第二导通部 设于顶板外侧， 通过螺钉与背板电性连接；
其中， 所述第一导通部为一长条形的金属片， 所述第二导通部为两个 片状的金属臂， 其设于该第一导通部的两端； 其中， 所述液晶显示面板包括 TFT基板、 与 TFT基板相对贴合设置 的 CF基板及设于 TFT基板与 CF基板之间的液晶； 所述 TFT基板与 CF 基板贴合后在 CF基板边缘位置形成断差位置， 一软性线路板贴合于该断 差位置上， 该软性线路板用于为液晶显示面板提供驱动电压； 所述液晶显 示面板还包括贴合于 TFT基板远离 CF基板表面的第一偏光片及贴合于 CF基板远离 TFT基板表面的第二偏光片；
其中， 所述胶框由塑胶材料制成；
其中， 所述导电元件由铝材制成；
其中， 所述光学膜片组包括导光板、 设于导光板面向背板一侧的反射 片、 及设于导光板另一侧的增光片；
还包括与前壳配合设置的后壳。
本发明的有益效果： 本发明的液晶显示装置， 通过在前壳上设置导电 元件， 该导电元件的第一导通部与液晶显示面板电性连接， 第二导通部通 过螺钉与背板电性连接， 进而形成通路， 有效释放静电， 避免静电击穿软 性线路板与 IC , 延长了液晶显示装置的使用寿命， 且， 结构简单， 易组 装， 有效降低生产成本。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其它有益效果显而易见。
附图中，
图 1为现有的液晶显示装置的结构示意图；
图 2为现有的又一液晶显示装置的结构示意图；
图 3为本发明液晶显示装置的结构示意图；
图 4为本发明导电元件的立体结构示意图。 具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果， 以下结合本发明 的优选实施例及其附图进行详细描述。
请参阅图 3及图 4, 本发明提供一种液晶显示装置， 包括： 背光模组 2、 设于背光模组 2上的胶框 4、 设于胶框 4上的液晶显示面板 6、 设于液 晶显示面板 6上的前壳 8及设于前壳 8上的导电元件 820。
所述背光模组 2 包括背板 22、 设于背板 22 内的背光源 （未图示）及 设于背板 22内的光学膜片组 24。
所述背板 22 由导电材料制成， 其包括底板 222及垂直连接底板 222 的数个侧板 224, 至少一侧板 224 的自由端设有垂直连接于该一侧板 224 的连接板 226 , 该连接板 226上设有螺紋孔 228。
所述前壳 8由塑胶材料制成， 其包括一具有开口 80的顶板 800, 该顶 板 800对应该螺紋孔 228设有第一通孔 82, 该前壳 8通过螺钉 802锁合于 背板 22上。
所述导电元件 820设于该前壳 8上， 该导电元件 820包括第一导通部
822及连接该第一导通部 822 的至少一个第二导通部 824, 该第一导通部 822设于前壳 8内侧与液晶显示面板 6电性连接， 该第二导通部 824通过 螺钉 802 与背板 22 电性连接， 进而形成通路， 有效释放静电， 避免静电 击穿软性线路板（未图示）与 IC (未图示） 。
优选的， 所述导电元件 820为导电金属片， 其由铝材制成， 在本实施 例中， 所述第一导通部 822为一长条形的金属片， 所述第二导通部 824为 两个片状的金属臂， 其设于该第一导通部 822 的两端。 所述第一导通部 822与第二导通部 824形成一 U形槽 826, 该导电元件 820通过该 U形槽 826卡合于该顶板 800上， 所述第一导通部 822设于前壳 8的顶板 800的 内侧与液晶显示面板 6电性连接， 所述第二导通部 824位于前壳 8的顶板 800的外侧， 通过螺钉 802与背板 22电性连接。 所述导电元件 820的第二 导通部 824对应该第一通孔 82设有第二通孔 828 , 所述螺钉 802依次穿过 该第二通孔 828、 第一通孔 82锁合于该螺紋孔 228内。
所述胶框 4 由塑胶材料制成， 用于承载液晶显示面板 6, 其上对应第 一通孔 82设有第三通孔 42 , 所述螺钉 802依次穿过第二导通部 824上的 第二通孔 828、 前壳 8上的第一通孔 82及胶框 4第三通孔 42锁合于该螺 紋孔 228内。
所述液晶显示面板 6包括 TFT基板 62、 与 TFT基板 62相对贴合设置 的 CF基板 64及设于 TFT基板 62与 CF基板 64之间的液晶 （未图示） 。
所述 TFT基板 62与 CF基板 64贴合后在 CF基板 64边缘位置形成断 差位置 642, —软性线路板（未图示）贴合于该断差位置 642 上， 该软性 线路板用于为液晶显示面板 6提供驱动电压， 以驱动液晶分子， 进而实现 画面显示。
所述液晶显示面板 6还包括贴合于 TFT基板 62远离 CF基板 64表面 的第一偏光片 66及贴合于 CF基板 64远离 TFT基板 62表面的第二偏光 片 68。
在本实施例中， 所述背光模组 2为侧入式背光模组， 所述光学膜片组 24包括导光板 242、 设于导光板 242面向背板 22—侧的反射片 244、 及设 于导光板 242另外一侧增光片 246。
本发明液晶显示装置还包括与前壳 8配合设置的后壳 10, 在本实施例 中， 所述前壳 8与后壳 10卡合设置， 进而将背光模组 2、 胶框 4及液晶显 示面板 6固定于前壳 8与后壳 10之间， 组装成液晶显示装置。
本发明的背光模组还可以为直下式背光模组（未图示） ， 当背光模组 为直下式背光模组时， 所述光学膜片组包括扩散板及设于扩散板远离背板 一侧的增光片。
综上所述， 本发明的液晶显示装置， 通过在前壳上设置导电元件， 该 导电元件的第一导通部与液晶显示面板电性连接， 第二导通部通过螺钉与 背板电性连接， 进而形成通路， 有效释放静电， 避免静电击穿软性线路板 与 IC, 延长了液晶显示装置的使用寿命， 且， 结构简单， 易组装， 有效降 低生产成本。
以上所述， 对于本领域的普通技术人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明权利要求的保护范围。

Claims

权 利 要 求
1、 一种液晶显示装置， 包括： 背光模组、 设于背光模组上的胶框、 设于胶框上的液晶显示面板、 设于液晶显示面板上的前壳及设于前壳上导 电元件， 所述背光模组包括背板、 设于背板内的背光源及设于背板内的光 学膜片组， 所述背板由导电材料制成， 所述前壳由塑胶材料制成， 该导电 元件包括第一导通部及连接第一导通部的第二导通部， 该第一导通部位于 前壳与液晶显示面板之间并与液晶显示面板接触， 一螺钉穿过导电元件的 第二导通部、 前壳与胶框后锁合于背板上。
2、 如权利要求 1 所述的液晶显示装置， 其中， 所述背板包括底板及 垂直连接底板的数个侧板， 至少一侧板的自由端设有垂直连接于该一侧板 的连接板， 该连接板上设有螺紋孔， 所述前壳对应该螺紋孔设有第一通 孔， 所述导电元件的第二导通部对应该第一通孔设有第二通孔， 所述胶框 对应该螺紋孔设有第三通孔， 所述螺钉依次穿过该第二通孔、 第一通孔、 第三通孔之后锁合于该螺紋孔内。
3、 如权利要求 1 所述的液晶显示装置， 其中， 所述前壳包括一具有 开口的顶板， 所述导电元件的第一导通部与第二导通部形成一 U形槽， 该 导电元件通过该 U形槽卡合于该顶板上， 该第一导通部设于顶板内侧与液 晶显示面板电性连接， 该第二导通部设于顶板外侧， 通过螺钉与背板电性 连接。
4、 如权利要求 3 所述的液晶显示装置， 其中， 所述第一导通部为一 长条形的金属片， 所述第二导通部为两个片状的金属臂， 其设于该第一导 通部的两端。
5、 如权利要求 1 所述的液晶显示装置， 其中， 所述液晶显示面板包 括 TFT基板、 与 TFT基板相对贴合设置的 CF基板及设于 TFT基板与 CF 基板之间的液晶； 所述 TFT基板与 CF基板贴合后在 CF基板边缘位置形 成断差位置， 一软性线路板贴合于该断差位置上， 该软性线路板用于为液 晶显示面板提供驱动电压； 所述液晶显示面板还包括贴合于 TFT基板远离 CF基板表面的第一偏光片及贴合于 CF基板远离 TFT基板表面的第二偏 光片。
6、 如权利要求 1 所述的液晶显示装置， 其中， 所述胶框由塑胶材料 制成。
7、 如权利要求 1 所述的液晶显示装置， 其中， 所述导电元件由铝材 制成。
8、 如权利要求 1 所述的液晶显示装置， 其中， 所述光学膜片组包括 导光板、 设于导光板面向背板一侧的反射片、 及设于导光板另一侧的增光 片。
9、 如权利要求 1 所述的液晶显示装置， 其中， 所述光学膜片组包括 扩散板及设于扩散板远离背板一侧的增光片。
10、 如权利要求 1 所述的液晶显示装置， 还包括与前壳配合设置的后 壳。
11、 一种液晶显示装置， 包括： 背光模组、 设于背光模组上的胶框、 设于胶框上的液晶显示面板、 设于液晶显示面板上的前壳及设于前壳上导 电元件， 所述背光模组包括背板、 设于背板内的背光源及设于背板内的光 学膜片组， 所述背板由导电材料制成， 所述前壳由塑胶材料制成， 该导电 元件包括第一导通部及连接第一导通部的第二导通部， 该第一导通部位于 前壳与液晶显示面板之间并与液晶显示面板接触， 一螺钉穿过导电元件的 第二导通部、 前壳与胶框后锁合于背板上；
其中， 所述背板包括底板及垂直连接底板的数个侧板， 至少一侧板的 自由端设有垂直连接于该一侧板的连接板， 该连接板上设有螺紋孔， 所述 前壳对应该螺紋孔设有第一通孔， 所述导电元件的第二导通部对应该第一 通孔设有第二通孔， 所述胶框对应该螺紋孔设有第三通孔， 所述螺钉依次 穿过该第二通孔、 第一通孔、 第三通孔之后锁合于该螺紋孔内；
其中， 所述前壳包括一具有开口的顶板， 所述导电元件的第一导通部 与第二导通部形成一 U 形槽， 该导电元件通过该 U 形槽卡合于该顶板 上， 该第一导通部设于顶板内侧与液晶显示面板电性连接， 该第二导通部 设于顶板外侧， 通过螺钉与背板电性连接；
其中， 所述第一导通部为一长条形的金属片， 所述第二导通部为两个 片状的金属臂， 其设于该第一导通部的两端；
其中， 所述液晶显示面板包括 TFT基板、 与 TFT基板相对贴合设置 的 CF基板及设于 TFT基板与 CF基板之间的液晶； 所述 TFT基板与 CF 基板贴合后在 CF基板边缘位置形成断差位置， 一软性线路板贴合于该断 差位置上， 该软性线路板用于为液晶显示面板提供驱动电压； 所述液晶显 示面板还包括贴合于 TFT基板远离 CF基板表面的第一偏光片及贴合于 CF基板远离 TFT基板表面的第二偏光片；
其中， 所述胶框由塑胶材料制成；
其中， 所述导电元件由铝材制成； 其中， 所述光学膜片组包括导光板、 设于导光板面向背板一侧的反射 及设于导光板另一侧的增光片；
还包括与前壳配合设置的后壳。
PCT/CN2012/084855 2012-11-14 2012-11-20 液晶显示装置 WO2014075321A1 (zh)

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