CN1036618C - 象素结构被屏蔽的液晶显示器 - Google Patents
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136213—Storage capacitors associated with the pixel electrode
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136218—Shield electrodes
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Abstract
液晶显示器,其第一和第二透明基片彼此间隔配置,使各自表面彼此相对,在相对的表面间有液晶材料。透明电极敷在一基片的相对面上。另一基片的相对面支撑:象素电极组成的矩阵;多条数据线,沿第一方向延伸;多条选择线,沿第二方向延伸,且在交叉点处越过数据线;和多个固态开关器件,将数据线连接到象素电极上。各象素电极设在第一平面,数据线和选择线设在与第一平面间隔开的至少另一个平面。透明导电屏蔽件在两个平面间延伸。
Description
本发明总的说来涉及液晶显示器(LCD),特别涉及这种显示器的被屏蔽的象素结构。
为试图提高LCD显示器的清晰度和降低制造成本,人们正在努力减小有源矩阵式液晶显示器(AMLCD)象素的大小,特别是对投影式LCD,更是这样做。这些努力由于孔径比和边缘效应问题而没有取得预期的成就。
LCD的象素电极是由诸如氧化铟锡(ITD)、多晶硅或αSi之类的透明导电材料制成的。除象素电极外,LCD还包括选择线、数据线和固态开关器件,用以将数据线连接到各象素电极上。LCD还包括黑色矩阵,用以防止光在各象素之间逸出,从而提高显示亮度。数据线、选择线、TFT(薄膜晶体管)和黑色矩阵都是不透明的。孔径比的定义是:面板透明部位的面积除以面板表面的整个面积。这个比值随着象素电极的小型化而成问题,原因是显示器不透明元件的大小几乎保持不变。在高密度显示器(例如投影式显示器)中,显示器不透明元件可能占总面积的百分率达70%之多,剩下的透明部分只有30%。因此,有70%的光损失掉,因而图象的质量低劣,图象呈颗粒状。如果有一种结构能增加透光面积的百分率,则这种结构会成为本技术领域中的显著先进。
此外,象素小还更容易受非平面表面和入侵的电场引起的边缘效应的影响。这些边缘效应使对比度系数变差,而且还会导致显示器的非均匀性。
本发明的目的是提供一种象素结构被屏蔽的液晶显示器。
本发明的一种液晶显示器,包括:
第一和第二透明基片,彼此基本上平行、间隔一段距离配置,从而所述基片具有彼此相对的表面;
液晶材料,在所述相对的基片表面之间;和
透明电极,敷在所述第一基片的所述面对第二基片的表面上;其特征在于:
所述第二基片的所述面对着第一基片的表面支撑着下列部件:(a)象素电极组成的矩阵;(b)多条数据线,沿第一方向延伸;(c)多条选择线,沿第二方向延伸,且在各交叉点处越过所述数据线;和(d)多个固态开关器件,用以将所述数据线电连接到所述象素电极上,所述象素电极敷在第一平面上,所述数据线和所述选择线则处在与所述第一平面间隔一段距离的至少另一个平面上,和所述象素电极重叠在至少部分所述数据线和至少部分所述选择线上;以及
透明的导电屏蔽件,在所述象素电极与所述至少部分所述数据线和所述至少部分所述选择线之间延伸,所述屏蔽件以实质上增加象素电极电容的方式与所述象素电极隔开,所述屏蔽件有若干孔眼,所述象素电极通过这些孔眼连接到所述开关器件。
因此,本发明的液晶显示器,孔径比只受到晶体区、数据和选择线厚度的限制,使得孔径比可达接近100%。
附图中:
图1示出了现有技术的液晶显示器的一部分;
图2是液晶显示器一个最佳实施例的顶视图,上基片和液晶材料都卸除了,可以看到象素电极分别与数据线和选择线重叠的情况;
图3是图2显示器的示意图,示出了各不同元件是如何配合工作的;
图4是图2最佳实施例的剖面图;
图5是本发明的另一个最佳实施例,具有若干凹口,供改善象素的边缘效应之用。
图1示出了现有技术液晶显示器的一部分,该部分包括由彼此在两个方向上以间距12间隔开的象素电极11组成的矩阵。数据线13配置在沿一个方向延伸的间距中,而选择线14则配置在沿正交方向延伸的间距中。数据线和选择线都平行于象素电极的相应边。数据线13和选择线14在各交叉点交叉,且彼此绝缘。固态开关器件15(例如薄膜晶体管(TFT))配置在数据线与选择线的各交叉点处。各开关器件按周知方式用来将数据线连接到各象素电极,以便根据选择线上的电压将所想显示的图象显示在显示器的显示部位上。
图2是本发明值得推荐的显示器的顶视图,显示器象素电极上方的所有元件都卸掉了,可以看到象素电极11都重叠在数据线和选择线上,但与这些线电绝缘。数据线和选择线在交叉处都彼此绝缘。TFT15最好配置在交叉点附近。由于重叠,因而无需黑色矩阵,从而提高了孔径比,因为重叠使光不能在各象素电极之间逸出。
图3示意示出了一个象素的诸元件的配置情况。两个透明基片16和17彼此间隔一段距离牢靠固定,各自的表面彼此基本上平行地相对着。基片16面对基片17的表面支撑着透明电极18。基片17面对基片16的表面支撑着数据线13、选择线14和TFT15。象素电极11都支撑在与数据线和选择线的平面间隔一段距离的一个平面上。透明导电屏蔽件19配置在象素电极11的平面与数据线13和选择线14的平面之间。孔眼20配置在屏蔽件19内的连接件11a可以将象素电极11电连接到TFT15的漏极的位置。象素电极制成平面,且屏蔽起来使其不致受从数据线和选择线延伸出的横向电场的影响。屏蔽件19可以调到某一基准电位(例如地电位),它的存在显著地提高了各象素处的电容。图4示出了象素最佳实施例的实际结构。
图4是体现本发明的象素最佳实施例的剖面图。基片17支撑着TFT15,TFT15有两个正掺杂、以N+表示的部分,该两部分之间有沟道部分15a(导电通路)。选择线14按周知的方式淀积,上面被覆有绝缘层21。透明导电屏蔽层19淀积在绝缘层21上。屏蔽层19的各不同位置形成有孔眼20,如图2中所示,连接件11a即通过孔眼20形成,将各象素电极11连接到TFT15的漏极上。屏蔽层19上还淀积有另一个绝缘层22。孔眼20中也充以绝缘材料。敷上绝缘层22之后,在屏蔽层19内开一个直径小于孔眼20的孔(最好通过腐蚀进行),使其穿过绝缘层21和22以及穿过在绝缘层22淀积过程中流入孔眼20中的绝缘材料。象素电极11淀积在绝缘层22上,导电材料则淀积在穿过各绝缘层的孔眼中,形成连接件11a,将象素电极连接到TFT15的漏极上。基片16和17按周知方式连接起来,使基片16面对基片17的表面上的透明导电电极18面对着象素电极11。已知类型的液晶材料23***电极11与18之间形成的空间。
当毗邻的象素电极11处于同电位,即存储同一信息时,使结构优化可以将不希望有的边缘效应减至最低。这种电压状态并不是任何场合下都存在的,而边缘效应随着毗邻电极上电压差的增加而增加。
图5示出了用屏蔽层19的一部分19a偏离各毗邻象素电极11之间的分隔空间或间隙12下凹的方法最大限度减小边缘效应的一个实施例。这样,横向场E耦合的毗邻象素电极及通过液晶材料的机械耦合,即使在各象素电极之间的间隙区也足以控制液晶材料的排列过程。本实施例可以通过在敷上形成象素的各层之前在基片17上形成凹口来实现。除屏蔽层19之外,绝缘层21、22也可以包含若干凹口。在电气上,这样做是无关重要的。象素电阻11的平面化是在敷上绝缘层22时填充凹口19a进行的。
Claims (2)
1.一种液晶显示器,包括:
第一和第二透明基片,彼此基本上平行、间隔一段距离配置,从而所述基片具有彼此相对的表面;
液晶材料,在所述相对的基片表面之间;和
透明电极,敷在所述第一基片的所述面对第二基片的表面上;其特征在于:
所述第二基片的所述面对着第一基片的表面支撑着下列部件:(a)象素电极组成的矩阵;(b)多条数据线,沿第一方向延伸;(c)多条选择线,沿第二方向延伸,且在各交叉点处越过所述数据线;和(d)多个固态开关器件,用以将所述数据线电连接到所述象素电极上,所述象素电极敷在第一平面上,所述数据线和所述选择线则处在与所述第一平面间隔一段距离的至少另一个平面上,和所述象素电极重叠在至少部分所述数据线和至少部分所述选择线上;以及
透明的导电屏蔽件,在所述象素电极与所述至少部分所述数据线和所述至少部分所述选择线之间延伸,所述屏蔽件以实质上增加象素电极电容的方式与所述象素电极隔开,所述屏蔽件有若干孔眼,所述象素电极通过这些孔眼连接到所述开关器件。
2.根据权利要求1的液晶显示器,其特征在于,所述屏蔽件(19)在分隔所述象素电极(11)的间隙(12)附近有若干与间隙(12)对应的下凹部分(19a),所述下凹部分偏离所述象素电极延伸。
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US24239694A | 1994-05-13 | 1994-05-13 | |
US242,396 | 1994-05-13 | ||
US242396 | 1994-05-13 |
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CN1118448A CN1118448A (zh) | 1996-03-13 |
CN1036618C true CN1036618C (zh) | 1997-12-03 |
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CN95104862A Expired - Fee Related CN1036618C (zh) | 1994-05-13 | 1995-05-12 | 象素结构被屏蔽的液晶显示器 |
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US (1) | US5654731A (zh) |
EP (1) | EP0682282B1 (zh) |
JP (1) | JP3828943B2 (zh) |
KR (1) | KR0144061B1 (zh) |
CN (1) | CN1036618C (zh) |
DE (1) | DE69534459T2 (zh) |
TW (1) | TW353150B (zh) |
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KR970048832A (ko) * | 1995-12-11 | 1997-07-29 | 김주용 | 박막 트랜지스터 액정 표시 장치 및 그 제조 방법 |
FR2754377B1 (fr) * | 1996-10-07 | 1998-11-06 | Thomson Lcd | Ecran de visualisation a matrice active |
JP3941901B2 (ja) | 1998-04-28 | 2007-07-11 | 株式会社半導体エネルギー研究所 | 半導体装置の作製方法 |
US6313481B1 (en) | 1998-08-06 | 2001-11-06 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and a method of manufacturing the same |
USRE41914E1 (en) | 2002-05-10 | 2010-11-09 | Ponnusamy Palanisamy | Thermal management in electronic displays |
US6849935B2 (en) | 2002-05-10 | 2005-02-01 | Sarnoff Corporation | Low-cost circuit board materials and processes for area array electrical interconnections over a large area between a device and the circuit board |
JP4686980B2 (ja) * | 2004-01-29 | 2011-05-25 | セイコーエプソン株式会社 | 液晶装置及び電子機器 |
JP5256941B2 (ja) * | 2008-08-29 | 2013-08-07 | セイコーエプソン株式会社 | 液晶装置およびプロジェクタ |
US8866982B2 (en) * | 2009-08-20 | 2014-10-21 | Innolux Corporation | Display device |
TWI450238B (zh) * | 2010-09-21 | 2014-08-21 | Wistron Corp | 複合顯示裝置與其顯示控制方法 |
KR101534421B1 (ko) * | 2011-11-25 | 2015-07-06 | 상하이 티안마 마이크로-일렉트로닉스 컴퍼니., 리미티드 | Tft 어레이 기판 및 그의 형성 방법, 및 디스플레이 패널 |
CN103137616B (zh) * | 2011-11-25 | 2017-04-26 | 上海天马微电子有限公司 | Tft阵列基板及其形成方法、显示面板 |
US9337247B2 (en) * | 2014-01-21 | 2016-05-10 | Apple Inc. | Organic light-emitting diode display with bottom shields |
US9716134B2 (en) | 2014-01-21 | 2017-07-25 | Apple Inc. | Organic light-emitting diode display with bottom shields |
US9608023B1 (en) * | 2016-05-02 | 2017-03-28 | Omnivision Technologies, Inc. | Edge reflection reduction |
CN107967874B (zh) * | 2016-10-19 | 2020-04-28 | 元太科技工业股份有限公司 | 像素结构 |
CN116449615B (zh) * | 2023-06-13 | 2023-10-03 | Tcl华星光电技术有限公司 | 显示面板及显示面板的驱动方法 |
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1995
- 1995-04-28 TW TW084104245A patent/TW353150B/zh not_active IP Right Cessation
- 1995-05-04 EP EP95106687A patent/EP0682282B1/en not_active Expired - Lifetime
- 1995-05-04 DE DE69534459T patent/DE69534459T2/de not_active Expired - Lifetime
- 1995-05-10 JP JP11204895A patent/JP3828943B2/ja not_active Expired - Fee Related
- 1995-05-11 KR KR1019950011537A patent/KR0144061B1/ko not_active IP Right Cessation
- 1995-05-12 CN CN95104862A patent/CN1036618C/zh not_active Expired - Fee Related
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1996
- 1996-10-29 US US08/739,236 patent/US5654731A/en not_active Expired - Lifetime
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5185601A (en) * | 1990-01-11 | 1993-02-09 | Matsushita Electric Industrial Co., Ltd. | Active matrix liquid crystal display apparatus and method of producing the same |
JPH04358127A (ja) * | 1991-05-22 | 1992-12-11 | Oki Electric Ind Co Ltd | 薄膜トランジスタ型液晶表示装置 |
JPH04358129A (ja) * | 1991-05-22 | 1992-12-11 | Oki Electric Ind Co Ltd | 薄膜トランジスタ型液晶表示装置 |
Also Published As
Publication number | Publication date |
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JPH08254715A (ja) | 1996-10-01 |
EP0682282A3 (en) | 1996-01-10 |
US5654731A (en) | 1997-08-05 |
EP0682282B1 (en) | 2005-09-21 |
JP3828943B2 (ja) | 2006-10-04 |
KR0144061B1 (ko) | 1998-07-15 |
DE69534459D1 (de) | 2006-02-02 |
KR950033584A (ko) | 1995-12-26 |
TW353150B (en) | 1999-02-21 |
CN1118448A (zh) | 1996-03-13 |
DE69534459T2 (de) | 2006-08-24 |
EP0682282A2 (en) | 1995-11-15 |
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