WO2014005337A1 - 一种液晶显示装置 - Google Patents

一种液晶显示装置 Download PDF

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Publication number
WO2014005337A1
WO2014005337A1 PCT/CN2012/078352 CN2012078352W WO2014005337A1 WO 2014005337 A1 WO2014005337 A1 WO 2014005337A1 CN 2012078352 W CN2012078352 W CN 2012078352W WO 2014005337 A1 WO2014005337 A1 WO 2014005337A1
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WO
WIPO (PCT)
Prior art keywords
light
liquid crystal
light source
optical component
display device
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/078352
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English (en)
French (fr)
Inventor
郭仪正
陈仕祥
俞刚
王甲强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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Publication of WO2014005337A1 publication Critical patent/WO2014005337A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a liquid crystal display device. ⁇ Background technique ⁇
  • the liquid crystal display device generally comprises a back plate, a middle frame and a front frame.
  • the back plate supports the optical component of the fixed backlight module
  • the front frame surrounds the edge of the liquid crystal panel
  • the middle frame is located between the front frame and the back plate, and the optical component is separated.
  • the LCD panel and the front panel are fixed to the LCD panel.
  • a liquid crystal display device without a middle frame design directly uses the cooperation of the back plate 300 and the front frame 200 to fix the optical component and the liquid crystal panel.
  • the optical component 600 is
  • the light source assembly 400 (such as an LED) is disposed on the side, and a strong light is present above the light source component, and enters the liquid crystal panel from the side of the liquid crystal panel 100, and the liquid crystal panel generates a hotspot phenomenon and is on the edge of the effective display area. A bright halo is formed, causing a decrease in display effect.
  • the technical problem to be solved by the present invention is to provide a liquid crystal display device which avoids the occurrence of a hot spot phenomenon in a liquid crystal panel.
  • a liquid crystal display device includes a front frame, a back plate fixed to the front frame, an optical component sandwiched between the front frame and the back plate, and a liquid crystal panel located on a light emitting surface of the optical component, the side of the optical component A light source is disposed corresponding to the light incident surface, and a light shielding member that blocks light from directly entering the liquid crystal panel from the light source is disposed between the light source and the liquid crystal panel.
  • the edge of the liquid crystal panel extends out of the light emitting surface of the optical component, and an extending portion is formed on a corresponding side of the light source, and the light blocking member is fixed on the extending portion of the panel.
  • This is a light-shielding structure on the side of the panel.
  • a part of the light from the light source enters the inside of the liquid crystal panel directly from the extension, and the other part passes through the reflection of the front frame and the back plate, and is directed to the extension from other directions, and the light shielding member is directly fixed at the Delay
  • the portion where the extension portion is easy to leak light can be shielded, so that no matter which direction the light comes from, it cannot be injected into the extension portion, and the light shielding effect is better than the light shielding structure on the light source side, further avoiding the phenomenon of hot spots on the liquid crystal panel. , improve display quality.
  • the light shielding member is a light shielding tape.
  • the light-shielding tape is easy to use and versatile, and can be applied to panels of various shapes and sizes.
  • the light shielding tape is attached to a side surface of the extending portion.
  • One side of the optical component has the most light leakage.
  • the light-shielding tape is adhered to a side surface of the extending portion and a surface facing the optical component. Apply a light-shield tape to the side and the side facing the optical component for better light leakage.
  • the light-shielding tape is wrapped around the surface of the extension portion.
  • the entire extension is wrapped, and the light from the light source can not enter the inside of the liquid crystal panel from any angle, further improving the light leakage phenomenon.
  • the light shielding member is a light shielding card slot provided with a groove, and an extending portion of the liquid crystal panel is embedded in the groove.
  • the extension By embedding the extension into the groove, it is possible to achieve all-round protection from light and installation.
  • the light shielding member is a light shielding baffle having a length corresponding to the light source, and one side of the light shielding baffle is disposed at an edge of the light emitting surface of the optical component, and the other side is disposed at a top of the light source adjacent to one end of the liquid crystal panel.
  • This is a light-shielding member on the light source side, which can prevent light from entering the liquid crystal panel from the side of the liquid crystal panel on the one hand, and can reduce the diverging space of the light source on the other hand, allowing more light to enter the optical component, thereby improving the utilization of light. .
  • the light source forms a light leakage space between the top of one end of the liquid crystal panel and the front frame
  • the light shielding member is a glue component filled in the light leakage space
  • the glue component is provided to extend to the optical The 7
  • This is another light-shielding member on the light source side, and the light-shielding effect is better because the light-shielding member is filled with the entire light leakage space.
  • the invention provides a light shielding member between the light source and the liquid crystal panel to block the light from directly entering the liquid crystal panel from the light source, so that the light emitted by the light source cannot enter the inside of the liquid crystal panel, thereby effectively avoiding
  • the edge portion of the liquid crystal panel is directly exposed to the light source irradiation region, so that the light shielding member of the present invention can effectively block light from entering from the edge side.
  • 1 is a conventional liquid crystal display device without a middle frame
  • Embodiment 1 of the present invention is a schematic structural view of Embodiment 1 of the present invention.
  • Embodiment 2 of the present invention is a schematic structural view of Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural view of a light shielding member according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of a light shielding member according to a third embodiment of the present invention.
  • FIG. 6 is a schematic structural view of another light shielding member according to Embodiment 3 of the present invention.
  • 100 liquid crystal panel
  • the present invention discloses a liquid crystal display device including a front frame 200, a back plate 300 fixed to the front frame 200, and an optical component 600 between the front frame 200 and the back plate 300.
  • the light-emitting surface of the component 600 is provided with a liquid crystal panel 100.
  • the side light-incident surface of the optical component 600 is correspondingly provided with a light source 400.
  • the light source 400 and the liquid crystal panel 100 are provided with a blocking light directly from the light source 400 into the liquid crystal panel 100.
  • the light source can be a light emitting device such as an LED or a cold cathode tube.
  • Embodiment 1 The embodiment of the present invention is a preferred embodiment of the present invention. As shown in FIG. 2, the edge of the liquid crystal panel 100 extends out of the light-emitting surface of the optical component 600, and an extension portion 110 is formed on a corresponding side of the light source 400.
  • the light-shielding member is a light-shielding tape 510. The tape 510 is attached to the extension 110 of the panel.
  • the light-shielding tape 510 is circumferentially pasted on the entire surface of the extending portion 110, so that the light emitted from the light source 400 does not enter the inside of the liquid crystal panel 100 from any angle, and the effect is better.
  • the light-shielding tape 510 may be attached to the side of the extension portion 110 facing the optical component 600, or to the side of the extension portion 110 and the side facing the optical component 600.
  • the light-shielding member 510 is selected from the light-shielding member.
  • the light-shielding tape 510 is convenient to use and has good versatility, and can be applied to panels of various shapes and sizes, and the cost is relatively low.
  • the edge of the liquid crystal panel 100 extends out of the light emitting surface of the optical component 600, and an extending portion 110 is formed on a corresponding side of the light source 400.
  • the light blocking member is a light blocking card slot 520 provided with a recess 521, and the liquid crystal panel 100
  • the extension portion 110 is embedded in the recess 521 to achieve all-round protection from light.
  • a separate light-shielding card slot 520 is used for shading, and the cartridge is mounted.
  • the light shielding member is a light shielding baffle 530 having a length corresponding to the light source 400.
  • the side of the light shielding shutter 530 is disposed at the edge of the light emitting surface of the optical component 600, and the other side is disposed at the top of the light source 400 near the end of the liquid crystal panel 100. .
  • This is a light-shielding member on the side of the light source 400.
  • light can be prevented from entering the liquid crystal panel 100 from the side of the liquid crystal panel 100.
  • the diverging space of the light source 400 can be reduced, and more light can enter the optical component 600. Improve the utilization of light.
  • the light source 400 forms a light leakage space between the top of the liquid crystal panel 100 and the front frame 200
  • the light shielding member is a glue component 540 filled in the light leakage space.
  • the material assembly 540 extends from a weir portion 541 to the light exiting surface of the optical component 600.
  • the weir portion 541 can be used to support the liquid crystal panel 100 to function like a plastic frame, and on the other hand can completely follow the light source.
  • the side shields the light and blocks the light from directly entering the LCD panel. Since the light-shielding member is filled with the entire light leakage space, the light leakage effect is better than the light shielding plate.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Description

一种液晶显示装置
【技术领域】
本发明涉及液晶显示领域， 更具体的说， 涉及一种液晶显示装置。 【背景技术】
液晶显示装置一般包括背板、 中框和前框， 背板承托固定背光模组的光学 组件， 而前框环绕液晶面板的边缘， 中框位于前框和背板之间， 分隔光学组件 了液晶面板， 并配合前框固定液晶面板。 如图 1 所示， 现有一种无中框设计的 液晶显示装置， 直接用背板 300和前框 200的配合实现光学组件和液晶面板的 固定，采用无中框设计时，由于光学组件 600的侧面设有光源组件 400(如 LED ), 光源组件上方存在较强的光， 会从液晶面板 100 的侧边进入到液晶面板中， 液 晶面板会产生热点 （hotspot )现象， 以及在有效显示区边缘形成亮晕， 造成显 示效果的下降。
【发明内容】
本发明所要解决的技术问题是提供一种避免液晶面板产生热点现象的液晶 显示装置。
本发明的目的是通过以下技术方案来实现的：
一种液晶显示装置， 包括前框、 与前框固定的背板， 所述前框和背板之间 夹持有光学组件， 以及位于光学组件出光面的液晶面板， 所述光学组件的侧部 入光面对应设有光源， 所述光源和液晶面板之间设有阻隔光线从光源直接进入 液晶面板内部的遮光构件。
优选的， 所述液晶面板边缘延伸出所述光学组件出光面范围， 在光源对应 的一边形成延伸部， 所述遮光构件固定在面板的延伸部上。 此为一种面板侧的 遮光结构， 光源发出的光线一部分直接从延伸部进入液晶面板内部， 另一部分 会通过前框和背板的反射， 从其他方向射向延伸部， 而遮光构件直接固定在延 伸部上， 可以将延伸部容易漏光的部位遮蔽住， 这样无论光线从哪个方向过来， 都无法射入延伸部， 相比光源侧的遮光结构， 遮光效果更好， 进一步避免液晶 面板产生热点现象， 提高显示品质。
优选的， 所述遮光构件为遮光胶带。 遮光胶带使用方便， 通用性好， 能适 用于各种不同形状、 尺寸的面板。
优选的， 所述遮光胶带粘贴在所述延伸部的侧面。 面向光学组件的一面漏 光最多 ,
优选的， 所述遮光胶带粘贴在所述延伸部的侧面以及面向光学组件的一面。 侧面和面向光学组件的一面都粘贴遮光胶带， 防漏光效果更好。
优选的， 所述遮光胶带环绕粘贴在整个所述延伸部的表面。 将整个延伸部 包裹起来， 光源发出的光从任何角度都进入不了液晶面板内部， 进一步改善漏 光现象。
优选的， 所述遮光构件为设有 槽的遮光卡槽， 所述液晶面板的延伸部嵌 入到所述凹槽内。 将延伸部嵌入到凹槽内， 就能实现全方位的避光， 安装方式 筒便。
优选的， 所述遮光构件为长度跟所述光源一致的遮光挡板， 所述遮光挡板 一侧设置在光学组件出光面边缘， 另一侧设置在光源靠近液晶面板一端的顶部。 此为一种在光源侧的遮光构件， 一方面能防止光线从液晶面板侧面进入液晶面 板， 另一方面， 可以减少光源的发散空间， 让更多的光线进入光学组件内， 提 高光线的利用率。
优选的， 所述光源靠近液晶面板一端的顶部与前框之间形成漏光空间， 所 述遮光构件为填充在所述漏光空间内的胶材组件， 所述胶材组件设有延伸到所 述光学组件的出光面的 7|托部。 此为另一种在光源侧的遮光构件， 由于遮光构 件填充满了整个漏光空间， 防漏光效果更好。
本发明由于在光源和液晶面板之间设置了阻隔光线从光源直接进入液晶面 板内部的遮光构件， 这样光源发出的光线就进入不了液晶面板内部， 有效避免 了热点现象的产生， 尤其是无中框或分段中框的液晶显示装置中， 液晶面板的 边缘部分会直接暴露在光源照射区域， 因此采用本发明的遮光构件可以有效阻 隔光线从边缘侧进入液晶面板内部。
【附图说明】
图 1是现有的一种无中框的液晶显示装置；
图 2是本发明实施例一的结构示意图；
图 3是本发明实施例二的结构示意图；
图 4是本发明实施例二遮光构件的结构示意图；
图 5是本发明实施例三的一种遮光构件的结构示意图；
图 6是本发明实施例三的另一种遮光构件的结构示意图；
其中： 100、 液晶面板； 110、 延伸部； 200、 前框； 300、 背板； 400、 光源； 510、 遮光胶带； 520、 遮光卡槽； 521、 凹槽； 530、 遮光挡板； 540、 胶材组件； 541、 承托部； 600、 光学组件。
【具体实施方式】
如图 2 ~ 6所示， 本发明公开了一种液晶显示装置， 包括前框 200、 与前框 200固定的背板 300, 前框 200和背板 300之间夹持有光学组件 600, 光学组件 600出光面设有液晶面板 100, 光学组件 600的侧部入光面对应设有光源 400, 所述光源 400和液晶面板 100之间设有阻隔光线从光源 400直接进入液晶面板 100内部的遮光构件。 光源可以采用 LED、 冷阴极管等发光器件。
本发明由于在光源 400和液晶面板 100之间设置了阻隔光线从光源 400直 接进入液晶面板 100内部的遮光构件， 这样光源 400发出的光线就进入不了液 晶面板 100 内部， 有效避免了热点现象的产生。 下面结合附图和较佳的实施例 对本发明作进一步说明。
实施例一 本实施方式为本发明的最佳实施例， 如图 2所示， 液晶面板 100边缘延伸 出光学组件 600出光面范围， 在光源 400对应的一边形成延伸部 110, 遮光构件 为遮光胶带 510, 遮光胶带 510固定在面板的延伸部 110上。
遮光胶带 510环绕粘贴在整个所述延伸部 110的表面， 这样光源 400发出 的光从任何角度都进入不了液晶面板 100 内部， 效果更好。 当然遮光胶带 510 可以粘贴在延伸部 110面向光学组件 600的一面， 或者粘贴在延伸部 110的侧 面和面向光学组件 600的一面。
此实施方式中， 遮光构件选用遮光胶带 510, 遮光胶带 510使用方便， 通用 性好， 能适用于各种不同形状、 尺寸的面板， 成本也比较低廉。
实施例二
如图 3、 4所示， 液晶面板 100边缘延伸出光学组件 600出光面范围， 在光 源 400对应的一边形成延伸部 110, 遮光构件为设有凹槽 521的遮光卡槽 520, 液晶面板 100的延伸部 110嵌入到凹槽 521 内， 实现全方位的避光。 本实施方 式采用独立的遮光卡槽 520进行遮光， 安装筒便。
实施例三
如图 5所示， 遮光构件为长度跟光源 400 —致的遮光挡板 530, 遮光挡板 530一侧设置在光学组件 600出光面边缘，另一侧设置在光源 400靠近液晶面板 100—端的顶部。 此为一种在光源 400侧的遮光构件， 一方面能防止光线从液晶 面板 100侧面进入液晶面板 100, 另一方面， 可以减少光源 400的发散空间， 让 更多的光线进入光学组件 600 内， 提高光线的利用率。 当然， 还可以采用图 6 所示的结构， 即光源 400靠近液晶面板 100—端的顶部与前框 200之间形成漏 光空间， 遮光构件为填充在所述漏光空间内的胶材组件 540, 该胶材组件 540伸 出一 乇部 541延伸到所述光学组件 600的出光面， 该 乇部 541—方面可用 于承托液晶面板 100,起到类似于胶框的作用， 另一方面可以完全从光源侧遮蔽 光线， 阻隔光线直接进入液晶面板。 由于遮光构件填充满了整个漏光空间， 相 比遮光挡板， 漏光效果更好。 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干筒单推演或替 换， 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种液晶显示装置， 包括前框、 与前框固定的背板， 所述前框和背板之 间夹持有光学组件， 以及位于光学组件出光面的液晶面板， 所述光学组件的侧 部入光面对应设有光源， 所述液晶面板边缘延伸出所述光学组件出光面范围， 在光源对应的一边形成延伸部， 所述光源和液晶面板之间设有阻隔光线从光源 直接进入液晶面板内部的遮光构件， 所述遮光构件固定在面板的延伸部上。
2、 一种液晶显示装置， 包括前框、 与前框固定的背板， 所述前框和背板之 间夹持有光学组件， 以及位于光学组件出光面的液晶面板， 所述光学组件的侧 部入光面对应设有光源， 所述光源和液晶面板之间设有阻隔光线从光源直接进 入液晶面板内部的遮光构件。
3、 如权利要求 2所述的一种液晶显示装置， 其中， 所述液晶面板边缘延伸 出所述光学组件出光面范围， 在光源对应的一边形成延伸部， 所述遮光构件固 定在面板的延伸部上。
4、 如权利要求 3所述的一种液晶显示装置， 其中， 所述遮光构件为遮光胶 带。
5、 如权利要求 4所述的一种液晶显示装置， 其中， 所述遮光胶带粘贴在所 述延伸部的侧面。
6、 如权利要求 4所述的一种液晶显示装置， 其中， 所述遮光胶带粘贴在所 述延伸部的侧面以及面向光学组件的一面。
7、 如权利要求 4所述的一种液晶显示装置， 其中， 所述遮光胶带环绕粘贴 在整个所述延伸部的表面。
8、 如权利要求 3所述的一种液晶显示装置， 其中， 所述遮光构件为设有凹 槽的遮光卡槽， 所述液晶面板的延伸部嵌入到所述 槽内。
9、 如权利要求 2所述的一种液晶显示装置， 其中， 所述遮光构件为长度跟 所述光源一致的遮光挡板， 所述遮光挡板一侧设置在光学组件出光面边缘， 另 一侧设置在光源靠近液晶面板一端的顶部。
10、 如权利要求 2所述的一种液晶显示装置， 其中， 所述光源靠近液晶面 板一端的顶部与前框之间形成漏光空间， 所述遮光构件为填充在所述漏光空间 内的胶材组件， 所述胶材组件设有延伸到所述光学组件的出光面的承托部。
PCT/CN2012/078352 2012-04-28 2012-07-09 一种液晶显示装置 Ceased WO2014005337A1 (zh)

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