TWI272427B - Liquid crystal display and thin film transistor array panel therefor - Google Patents
Liquid crystal display and thin film transistor array panel therefor Download PDFInfo
- Publication number
- TWI272427B TWI272427B TW092117649A TW92117649A TWI272427B TW I272427 B TWI272427 B TW I272427B TW 092117649 A TW092117649 A TW 092117649A TW 92117649 A TW92117649 A TW 92117649A TW I272427 B TWI272427 B TW I272427B
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- Prior art keywords
- electrode
- liquid crystal
- pixel electrode
- pixel
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
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- 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
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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- 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
- G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
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- G—PHYSICS
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- 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
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
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- 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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133345—Insulating layers
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- 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
- G02F1/133514—Colour filters
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
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- G—PHYSICS
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- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
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- G—PHYSICS
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- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
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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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
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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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
1272427 攻、發明說明: 【發明所屬之技術領域】 本發明係關於一種液晶顯示器,且尤其關於一種液晶顯 示器之面板。 【先前技術】 一般而言,一液晶顯示器(LCD)包含一液晶(LC)面板總成 ,該面板總成包含··具有兩種場產生電極(例如像素電極與 —通用電極)之兩個面板;及插入其間之一具有介電各向豈 性的L C層。在该等場產生電極間之電壓差之變化(意即由兮 等電極產生之一電場之強度變化)改變經過該LcD之透光 率,並因此藉由控制該等電極間電壓差獲得所要之影像。 然而,該LCD之一關键缺點涉及狹窄視角的問題。為克 服此問題,已開發了各種拓寬視角技術,其中寬視角技術 之一最強選擇係當校直LC分子以垂直於較高及較低面板時 在該等像素電極及該通用電極形成凹陷部分或突起部分之 技術。 在該各個像素電極及該通用電極處提供之凹陷部分產生 邊、.彖%其控制孩等LC分子之傾斜方向藉此拓寬該視角。 在居α個像素電極及該通用電極處提供之突起部分使該 電場變形’且由於該變形之電場控制了該分子之頻斜 方向藉此拓寬該視角。 / /田在F亥通用電極之一較高面板處提供突起部分時 在族像素i極之一較低面板處提供凹陷部分。由該等凹 陷部分及突起部分產生之邊緣場控制該等Lc分子之傾斜方 86421 1272427 向藉此形成多重晶疇。 該多晶疇LCD涉及一在所有方向高達80°或更多之卓越 的基於對比之視角或基於灰度反轉之視角。將該基於對比 之視角定義為呈現1 : 10的對比度之視角,而藉由該灰度間 亮度反轉之臨界角來定義該基於灰度反轉之視角。然而, 該多晶_ LCD顯示:獲得一正向伽瑪曲線與側向伽瑪曲線 相互不一致的側向伽瑪曲線失真,以展示與扭轉向列模式 之LCD相比退化的左及右可見度。例如,具有分隔晶疇之 凹陷部分之圖案化垂直校直(PVA)模式LCD在其轉至侧面 時變得更亮且色移至白色。在一嚴重情況下,消除明亮灰 度間之差異,而由此使該等影像聚結。然而,隨著近來基 於多媒體目的使用LCD來顯示靜止或移動的圖片影像,改 進該可見度愈發成為一關键問題。 【發明内容】 本發明提供一種液晶顯示器,其包含:一第一絕緣基板 ;形成於該第一絕緣基板上之第一訊號線和第二訊號線; 形成於該第一絕緣基板上的並與該第一訊號線和該第二訊 號線相交之第三訊號線;一連接至該第一訊號線和該第三 訊號線之第一薄膜電晶體;一連接至該第二訊號線和該第 三訊號線之第二薄膜電晶體;一連接至該第一薄膜電晶體 之第一像素電極;一連接至該第二薄膜電晶體之第二像素 電極;一面對該第一絕緣基板之第二絕緣基板;一形成於 該第二絕緣基板上之通用電極;一插入於該第一與第二絕 緣基板間之液晶層,其包含在該第一像素電極上之第一液 86421 1272427 本發明提供一種薄膜電晶體陣列面板,其包含:一絕緣 基板;形成於該基板上之第一閘極線和第二閘極線;一形 成於該第一閘極線和該第二閘極線上之閘極絕緣層;一形 成於該閘極絕緣層上之半導體層;一至少形成於該半導體 層上且與琢等閘極線交又之資料線;至少形成於該半導體 層上的第一汲電極和第二汲電極,其位於該第/閘極線與 該資料線之交叉點附近;至少形成於該半導體層上的第三 汲電極和第四汲電極,其位於該第二閘極線與該資料線之 交叉點附近,·一形成於該閘極絕緣層上之耦合電極;一形
緣娜儿贋工且稷運接至該第二汲電極之第二 1豕_系"雷
至少形成於該半導體 本發明提供一種液晶顯示哭,甘&八· ;形成於該第一基板上之第. 成於該第一閘極線和該第二 成於該閘極絕緣層上之半導f 層上且與該等閘極線交叉之π种琛;至 86421 1272427 層上的第一汲電極和第二汲電極,其位於該第一閘極線與 該資料線之交叉點附近;至少形成於該半導體層上的第三 汲電極和第四汲電極,其位於該第二閘極線與該資料線之 交叉點附近;一形成於該閘極絕緣層上之耦合電極;一形 成於該資料線、該等第一至第四汲電極、以及該耦合電極 上之鈍化層,其具有複數個接觸孔而得以曝露該等第一至 第四汲電極及該耦合電極;一形成於該鈍化層上且被連接 至該第一汲電極及該耦合電極之第一像素電極;一形成於 該鈍化層上且被連接至該第二汲電極之第二像素電極;一 形成於該鈍化層上且被連接至該第三汲電極之第三像素電 極;一形成於該鈍化層上且被連接至該第四汲電極之第四 像素電極’該第四像素電極局邵重叠於該搞合電極;一面 對該第一絕緣基板之第二絕緣基板;一形成於該第二絕緣 基板上之通用電極;一插入於該第一與第二絕緣基板間之 液晶層;以及一形成於該第一絕緣基板及該第二絕緣基板 中至少一絕緣基板上之晶疇分隔構件,其將該液晶層分隔 成複數個晶疇,其中使該等晶疇之兩邊長邊相對於該閘極 線或該資料線大體上呈約45°角。 較佳地,該第一像素佔據該第一像素電極及該第四像素 電極整體面積之約50-80%,且在將電壓供應至該第一薄膜 電晶體之後將電壓供應至該第四薄膜電晶體。 該第一像素電極之臨限電壓較佳比該第四像素電極之臨 限電壓低約0.4-1.0 V。 【實施方式】 86421 1272427 下文將結合隨附圖式更全面地描述本發明,其中顯示本 發明之較佳實施例。然而,可以許多不同形式體現本發明 ’不應受本文所述之該等實施例的限制。 在該等圖式中,為清晰起見誇大了各層、薄膜及區域之 厚度。i伤說明書中類似數字代表類似元件。應瞭解當稱 元件(如一層、薄膜、區域或基板)在另一元件之,,上"時, 可能該元件直接在另一元件之上或在其間可能存在介入元 件相反,當稱一元件直接π在另一元件之,’上’,時,其間不 存在介入元件。 先結合附圖來詳細描述根據本發明之實施例之LCD。 圖1係根據本發明之實施例之LCD 一像素之等效電路圖。 結合圖1,一種根據實施例tLCD&含複數個顯示訊號線 Gi、D丨及131及連接至該等顯示訊號線且大體上以矩陣方式 排列之複數個像素。 該等顯π訊號線Dj包含用於傳輸閘極訊號(稱之為掃 描釩號)之複數個閘極線&以及用於傳輸資料訊號之複數 個貧料線q。該等閘極線〇1大體在一列方向上延伸且大體 相互平行,而該等資料線]^大體在一行方向上延伸且大體 相互平行。 該等顯不訊號線13 1還包含複數個儲存電極線丨3丨,其位 於該等閘極線G,之間以及該等像素之間並被供應有一通用 電塵Vcom。 每個像素PW 1二1,2,···,η且产丨,2,〜,m )都包含一對子像 素/^及圮,且每個子像素C或圮都包含:一開關元件Q1或 86421 -10- 1272427 Q /、被連接至一由該等閘極線Gi之一與該等資料線〇丨之 斤、、且成的線對,一 LC電容器Clci或CL(:2 ;以及一儲存電 各郎CST1或cSTz,LC電容器CLCi或Clc2及儲存電容器cST1或 CsT2都被連接至該開關元件Q1或Q2。 藉由一糖合電容器Cpp電容性地耦合在該行方向之兩個 岫近像素。例如,使一像素Ρι」之一較高子像素圮與一較高 像素Pl〜之一較低子像素圮電容性地耦合,使一像素Pij之 一較低子像素g與一較低像素pi+i,j之一較高子像素d電 容性地隸合。 遠開關元件Q1或Q2具有三個端子:一連接至該等閘極線 GrGn之一的控制端子;一連接至該等資料線仏①m之一的 輸入端子;及一連接至該LC電容器CLC1或CLC2、該儲存電 表為CST]^CST2及該輕合電容器Cpp之輸出端子。 在该開關元件Q1或Q2與一通用電壓Vcom之間連接該LC 電表斋CLC1或Clc2。在該開關元件Q1或Q2與該儲存電極線 1 J 1之間連接遠儲存電容器Csti或CsT2。 現茶考圖2至圖3 C來詳細描述根據本發明之一實施例之 LCD的LC面板總成。 、 圖2是根據本發明之一實施例之LC面板總成的佈局圖;圖 3A是圖2所示沿IIIB-IIIB’線之LC面板總成之截面圖;圖3B 是圖3A所示之TFT陣列面板之截面圖,圖中描繪出圖3A所 示之LC面板總成中除一彩色濾光器陣列面板及一偏光膜外 之一部分。圖3C是圖2所示沿IIIC-IIIC1線之TFT陣列面板之 截面圖。 86421 -11 - 1272427 參考圖3 A,根據此實施例之LC面板總成包含—tFT陣列 面板100、一面對該TFT陣列面板1〇〇之彩色濾光器陣列面板 200以及一插入其間之LC層3。 參考圖2至圖3C,該TFT陣列面板1 〇〇包含複數個閘極線 121以及形成於一絕緣基板11 〇上之複數個儲存電極線^ 3 ^ ,該基板較佳係由透明玻璃製成。每個閘極線121大體上在 一列方向延伸且包含複數個閘極電極124。該等儲存電極線 13 1大體上在一列方向延伸且邵分被彎曲。 在居等閘極線121及儲存電極線13 1上形成一閘極絕緣層 140,並在與該等閘極電極124相對之該閘極絕緣層14〇上形 成複數個半導體島1 54。每個半導體島1 54較佳係由非晶矽 (na-Sr)製成並形成一 TFT通道。在該等半導體島154上形成 複數個歐姆接觸163、165a以及165b,其較佳係由重摻雜N 型雜質(如磷(P))的a-Si製成。 在該等歐姆接觸163、165a及165b以及該閘極絕緣層14〇 上形成複數個資料線171、複數對汲電極175&與175b以及複 數個#禹合電極17 7。 每個資料線171大體上在一行方向延伸且包含複數個源 電極17〇,且每個源電極173位於一對汲電極175&與175b的 對面’該對汲電極自其相對於該閘極電極124分離。 每對汲電極175a與175b在相對於該閘極線124之相對方 向上延伸。 每個镇合電極17 7在穿過該儲存電極線1 3丨之一行方向上 延伸。 86421 -12- 1272427 曝露位於該源電極173與該等汲電極175a及175b間之該 等半導體島1 5 4的邵分,且僅在該等半導體島1 5 4及資料線 171及汲電極175a及175b之間配置該等歐姆接觸163、165a 及165b。 在該等資料線171、汲電極175a和175b以及耦合電極177 上形成一鈍化層1 80。該鈍化層1 8〇具有用於曝露該等汲電 極175&與1751)之末端邵分之複數個接觸孔185&及1851),以 及用於曝露該等耦合電極177之末端部分之複數個接觸孔 1 87。忒鈍化層還具有用於曝露該等資料線丨7 1之末端部分 179足複數個接觸孔182,且該鈍化層18〇及該閘極絕緣層 140具有用於B恭露該等閘極線121之末端部分〗29之複數個 接觸孔1 8 1。 在該鈍化層180上形成複數對像素電極19如與19〇b以及 稷數個接觸輔助81與92。該等像素電極19{^與19〇1)以及該 等接觸輔助81與92較佳係由一透明導電材料(例如氧化銦 錫(ITO)及氧化錮鋅(IZ0))或一反射材料製成。 —每對像素電極19〇績1905都包含一較低像素電極㈣與 較问像素電極190b,其分別經由接觸孔18化與18外連接 至沒電極咖於⑽。將該較高電極觸經由制孔187連 接,减合電極177,且該較低電極19Ga與該輕合電極177 重瑩使得電容性耦合一較高像素之較低像素電極績一 較低像素之較高像素電極19 此外使一較咼像素之較 =象t電握190a與一較低像素之較高像素電極觸位於穿 ⑽储存電㈣⑶的相對位置上且與該料電極線131重 86421 -13 - 1272427 cmr以形成複數個儲存電容器。使穿過該儲存電極線1 3 1相對 之该等像素電極19〇a與190b之邊沿彎曲以形成V形,且該像 素黾极1 90a之V形邊沿是凸面的,而該像素電極1 之v带 邊緣是凹面的。 每個較低像素電極19〇a具有較高、較低及中心的線性凹 1½邙刀9 1 9 3。*亥中心凹陷邵分9 3位於該行方向之中間部分 且自左向右進入该像素電極1 9 〇 a,藉此將該像素電極1 9 & 为1¾成較南及較低分區。該較高及較低凹陷部分9丨與分 別在孩較高及較低分區内傾斜延伸,且其位置相對於該中 心凹陷部分93對稱。 藉由接觸孔1 81與1 82將該接觸輔助8 1與82分別連接至該 閘極線1 21與該資料線丨7丨之曝露的末端部分丨29與丨79,且 用以保瘦忒等曝露之末端部分丨29與! 79但此並非強制性的。 將一校直層π塗佈於除了該等接觸輔助81與82以外的該 TFT陣列面板1〇〇之整個表面。 一閘極電極124、一源電極173以及一對汲電極175&與 175b連同一半導體島154一起形成分別連接至該等像素電 極190a與190b之一對TFT陣列面板。 參考圖2及圖3B,該彩色濾光器陣列面板2〇〇包含一形成 於該絕緣基板210上之黑色矩陣22〇,該絕緣基板21〇較佳是 由透明玻璃製成。該黑色矩陣22〇界定複數個窗口,在該等 w 口處形成複數個紅色、綠色及藍色彩色濾光器23〇 ^在該 等彩色濾光為上形成一外塗層並在其上形成一通用電極 270。該通用電極270較佳是由一例如IT〇及IZ〇的透明導電 86421 -14- 1272427 材料製成,並具有複數組四個線性凹陷部分27 1 -274。該組 凹陷部分27 1-274中的三個27 1-273與該較低像素電極190a 重疊以將該像素電極190a連同該等凹陷部分91-93 —起分 隔成複數個子區。具有一 V形之該凹陷部分274與該較高電 極190b重疊以將較高像素電極190b二等分為兩個子區。將 一校直層21塗佈於該彩色濾光器陣列面板200之整個表面 藉由該等凹陷部分91-93以及271-273界定的每個子區具 有大體上一四邊形形狀,其具有與該等閘極線121及該等資 料線17 1形成約45 °角的兩個主要邊沿。藉由該較高像素電 極190b以及該凹陷部分274之邊沿界定的該等子區具有V形 狀,其是兩個四邊形的組合。 將一對偏光器12與22分別附著至面板100與200之外表面 上。使該等偏光器12與2 2之偏光軸相交並大體上平行於閘 極線121或資料線17 1。 校直該LC層3之該等分子使得在無電場的情況下其主軸 大體上垂直於面板100及200之表面。 重新參考圖1,將施加於一像素之該通用電壓V c 〇 m與該 資料電壓之差異表示為該LC電容器CLC1或CLC2之一充電電 壓,意即,一像素電壓。該等LC分子具有取決於該像素電 壓的量值之定向且該等定向確定該經過該LC電容器CLC1* CLC2之光線之偏光。該等偏光器11及21將偏光轉變成光透 射。 · 同時,假設一像素Pup之資料電壓與該通用電壓Vcom間 86421 -15 - 1272427 之差異為dup,且像素Pup之較高子像素 <及較低子像素 < 的 LC電容器CLC1*CLC2所充電的像素電壓分別為與 。此外,假設將使該像素Pup之較低子像素 <及像素Pdown 之較高子像素耦合至一耦合電容器Cpp,且該像素 Pdown之資料電壓與該通用電壓Vcom間之差異為ddQWn。此 外,在將資料電壓供應至該像素Pup之後,將資料電壓供應 至該像素Pdown。此後,滿足下列關係式: ⑴ (2) V(I^P )=dup;;及 v(pi)〜CLC2+匕‘ 在等式1與等式2中:仏以與^^為該較低子像素/^之乙。 電容器及儲存電容器之電容,Cpp為該耦合電容器之電容, 及cTdQWn為在前一圖框中施加至該子像素&胃之資料電壓與 該通用電壓Vcom間之差異。為方便描述,忽略導線電阻及 該資料線Dj之訊號延遲。 在等式2中,若因為dup與ddQWn具有相同極性而使(^。―與 d’down具有相反極性,則該像素Pdown與該像素Pup顯示相同 灰度’且該顯7F之影像為靜止影像’ dUp二ddown = - cTd〇wn ,且因此等式2變為: V(Pu2p)-dup + 2dupCPP _ = = Ίρ ,⑶
Clc2 + CST2 + Cpp CLC2 + CST2 + Cpp 立中 t1 = CLc^stL±3^>1 ’ CLC2 + CST2 + Cpp 反之,若dup與ddQWn具有相反極性,則該像素Pdown與該 像素Pup顯示相同灰度,且該顯示之影像為靜止影像,且等 式2變為: 86421 -16 - 1272427 V(Pup) = dup ---.__— uPCpP - CLC2 +CST2 一 cpp CLC2 + CST2 + Gpp CLC2 + (:们 + Gpp duP = Up/ ⑷ <1· 其中 T2 = ^LC2 ^ CST2 ~Cpp
ClC2 + CST2 + Cpp 根據等式3與等式4,若將—像素Pup之較低子像素《電容 =禹合至—像素Pd_之較高子像素d當施加至該等 兩個子像素侧_之資料電壓的極性相同時,則會以高於 用=无i该像素pllp之較高子像素4之充電電壓的電壓來 、甩μ像素Pup之較低子像素 <,而當其兩者極性相反時則 相反。 其中像素包含兩個開關元件及兩個LC電容器,且藉由一 _合電容器將鄰近像素f容性_合的像素結構防止在底視 圖上之灰度反轉並改良其在所有方向之可見度。 固4係过明可見度之失真與該等像素電極之電壓偏移及 面積比率之函數圖表。 圖4中所示之垂直軸表示量化該可見度失真之數值,而該 水平軸表示電壓偏移為〇、0.4 v、及〇 6 v時該較低像素電 極19 0 a及較局像素電極19 〇 b間之面積比率。 範圍在0.1- 0 · 2之可見度失真意味該可見度為預期的卓越 其等於fe極射線管(CRT)之等級’而一範圍在〇. 2 - 〇 2 5之 可見度失真意味該可見度非常卓越。範圍在025-〇 3之可見 度失真,i、味遠可見度較卓越’而範圍在0.3-0.35之可見度失 真意味該可見度較好。然而約小於〇. 3 5之可見度失真意味 著該可見度較差,其導致較差顯示品質。 自圖4可得知,當該較低像素電極與該較高像素電極之面 86421 -17 - 1272427 積比率在範圚内,且電壓偏移接近-臨限電壓 Vth在0.4-1.〇 V範圍内時,可獲得較卓越的可見度。也就是 況較佳地I "讀低像素電極設計成比該較高像素電極大 。然而,當該較低像素電極等於或大於8〇%,則會由於該 反衝電壓或其艺因素而造成如閃燦現象等各種問題。此外 ,當該較低像素電極之臨限電壓vt峨該較高像素電極之臨 限電壓州低0.4{"時,能狗改良該可見度。灰度愈高, 低像素電極與較高像素電極間之電壓差異會更大。 接下來將結合圖5及6來描述根據本發明之LCD能夠改良 可見度的原因。 圖5係說明—習知圖案化垂直校直(pva)lcd之正視圖之 伽瑪曲線CM及侧視圖之伽瑪曲線C2之圖表,以及圖6係說 明根據本發明之眚# Μ 一 τ 、 、 ^ 惑CD义正視圖之伽瑪曲線C3及側 視圖之伽瑪曲線C4之圖表。
如圖5所示’具有像素的-個像素電極之習知pVA LCD 之側向伽瑪曲線。2向上變形程度高於前向 向 上變形程度。 明之—實施例’當建立該資料電壓使得 她口至孩較低子像素的像素電壓低於慣用的資料電壓時, ^呆持該較低子像素之電壓低於一些較低灰度之臨限電壓 二。相^地,將該較低子像素保持在一黑色狀態,而該較 \ 現—透射狀態’如圖6中參考字符A所示。然而 ^ IX万像素電極之面積較小,所以其總亮度小於習 、口、亮度。對於等於或大於—預定數值(由參考字符 86421 -18- 95 1 计·分會丨丨_ _丨丨丨丨__丨_卿_卩「爪裏 丨E7>24ii(銀种請案 1^___土立說#書替捲JJ95年10月) B表示的)的灰度,該較低子像素之電壓超過該臨限電壓vth ,並由此,該較低子像素亦有助於該總亮度。因此,擴大 了取決於該灰度增加之亮度增加。相應地,如圖6所示,減 少了該伽瑪曲線之失真。 圖7說明量调J習知”八模式咖所得之伽瑪曲線;以及圖 8說明量測根據本發明之實施例之咖所得之伽瑪曲線。 比較圖7與圖8中所示之伽瑪曲線,可得知根據本發明實 施例之LCD之所有方向之伽瑪曲線失真小於習知[CD所有 方向之伽瑪曲線失真。 如上所述j將兩個像素電極及兩個TFT分配至一像素,且 電容性耦合鄰近的兩個像素之兩個像素電極,藉此改良在 所有方向又可見度。此外,因為作該晶疇分隔使得液晶分 子之平均指向矢相對於該閘極線或資料線呈45。角,可使用 具有平行於該閘極線或資料線之偏光軸之偏光器。從而減 少該偏光盤之生產成本。 儘管上文已描述本發明之較佳實施例,應瞭解許多本文 所教T 4基本發明理念之變體及/或修改(熟悉此項技術者 即知)仍屬於本發明之精神及範圍内,如在隨附申請專 圍中所定義的。 【圖式簡單說明】 結合隨附圖式通過詳細描述其較佳實施例,吾人可更清 楚瞭解本發明之以上及其他優勢,其中: " 圖1係一根據本發明之實施例之LCD電路圖;
圖2係一 86421-951004.DOC 根據本發明之實施例之LCD佈局圖 -19- 1272427 圖3八係圖2所示沿1118-11出’線之1^面板總成之截面圖; 圖3 B係圖3 A所示之T F T陣列面板之截面圖,圖中描繪出 圖3 Α所示之LC面板總成中除一彩色濾光器陣列面板及一 偏光膜外之一部分; 圖3C係圖2所示沿IIIC-IIIC’線之TFT陣列面板之截面圖; 圖4係說明可見度失真與電壓偏移及晶疇比率之函數圖 表; 圖5係說明一習知圖案化垂直校直(pva)LCD之正視及側 視圖之伽瑪曲線圖表; 圖6係說明根據本發明之實施例之lCd之正視及側視圖 之伽瑪曲線圖表; 圖7說明量測習知PVA模式LCD所得之伽瑪曲線;以及 圖8說明量測根據本發明之實施例之LCD所得之伽瑪曲 【圖式代表符號說明】 110 絕緣基板 121 閘極線 123 閘極電極 131 儲存電極線 140 閘極絕緣層 171 資料線 173 源電極 174 李馬合電極 175a, 1 7 5 b沒電極 180 鈍化層 190a, 190b像素電極 91 92 ’ 93 ’ 271 ’ 272,273,274 凹陷部分 86421 -20-
Claims (1)
- 利申請案 年月中劣♦録暴滅替換本(95年ίο月) L——I、,_W¥?ll 範圍: 1. 一種液晶顯示器,包含: 一第一絕緣基板; 形成於該第一絕緣基板上之第一訊號線和第二訊號 線; 一形成於該第一絕緣基板上並與該第一訊號線和該 第二訊號線相交之第三訊號線; 一連接至該第一訊號線和該第三訊號線之第一薄膜 電晶體; 一連接至該第二訊號線和該第三訊號線之第二薄膜 電晶體; 一連接至該第一薄膜電晶體之第一像素電極; 一連接至該第二薄膜電晶體之第二像素電極; 一面對該第一絕緣基板之第二絕緣基板; 一形成於該第二絕緣基板上之通用電極; 一插入於該第一與第二絕緣基板間之液晶層,其包含 在該第一像素電極上之第一液晶區域以及在該第二像 素電極上之弟二液晶區域,以及 一形成於該第一絕緣基板及該第二絕緣基板中至少 一絕緣基板上之晶$哥分隔構件’其將該弟一液晶區域與 該第二液晶區域分別分隔成複數個晶臂’ 其中該第' 一液晶區域與該弟二液晶區域各自之晶曰寿 都包含一第一定向晶#壽與一第二定向晶曰壽’使在該第一 與第二定向晶嗜中液晶分子之平均指向矢(average 86421-951004.DOC 1272427 director)相對於該第一或第二訊號線呈一約〇_9〇。之預 疋角度,並使該第一像素電極與該第二像素電極電容性 地搞合。 2·如申睛專利範圍第丨項之液晶顯示器,其中該第一像素 電極佔據該第一像素電極和該第二像素電極整體面積 之約 50-80%。 3.如申請專利範圍第2項之液晶顯示器,纟中在啟動該第 薄膜電晶體之後啟動該第二薄膜電晶體。 4·如申請專利範圍第1項之液晶顯示器,其中該第一像素 電極之臨限電壓比該第二像素電極之臨限電壓低約 0 · 4 -1 · 0 V 〇 5 ·如申請專利範圍第丨項之液晶顯示器,還包含形成於該 弟、’、巴、纟豕基板上之儲存電極線,該儲存電極線與該第一 像素笔極和该弟一像素電極一起形成儲存電容器。 6·如申請專利範圍第1項之液晶顯示器,其中使該第一定 向曰曰脅和該第二定向晶W壽中之該等液晶分子平均指向 矢相對於該第一或第二訊號線呈約45。角。 7.如申請專利範圍第6項之液晶顯示器,還包含一置放於 3弟一、纟巴緣基板之一外層表面上並具有一平行於該第 一或第二訊號線之偏光軸的第一偏光器,以及一置放於 |衾第二絕緣基板之一外層表面上並具有一與該第一偏 光板之偏光軸相交之偏光軸之第二偏光器。 8 · —種薄膜電晶體陣列面板,其包含: 一絕緣基板; 86421-951004.DOC - 2 - 1272427 形成於該基板上之第一閘極線和第二閘極線; 一形成於該第一閘極線和該第二閘極線上之閘極絕 緣層; 开)成於該閘極絕緣層上之半導體層; 一至少形成於該半導體層上且與該等閘極線交又之 資料線; 至少形成於該半導體層上的第一汲電極和第二浓電 ^ 其k於該第一閘極線與該資料線之交又點附近, 至少形成於該半導體層上的第三沒電極和第四汲電 極’其位於該第二閘極線與該資料線之交又點附近; —形成於該閘極絕緣層上之耦合電極; 一形成於該資料線、該等第一至第四汲電極以及該耦 一 %板上之鈍化層,其具有複數個接觸孔而得以曝露該 等第一至第四汲電極及該耦合電極; 一形成於該鈍化層上且被連接至該第一汲電極及該 搞合電極之第一像素電極; 一形成於該鈍化層上且被連接至該第二汲電極之第 二像素電極; 一形成於該鈍化層上且被連接至該第三汲電極之第 二像素電極;以及 一形成於該鈍化層上且被連接至該第四汲電極之第 四像素電極,該第四像素電極局部重疊於該耦合電極, 其中該第一像素電極與該第四像素電極中至少一像 素電極具有一傾斜凹陷部分。 86421-951004.DOC 1272427 /種液晶顯示器,其包含: y · /第一絕緣基板; 形成於該第一基板上之第一閘極線和第二閘極線; /形成於$亥第一閘極線和該第二閘極線上之閘極絕 緣層; 〜 ,形成於該閘極絕緣層上之半導體層; , 一至少形成於該半導體層上且與該等閘極線交叉之 資料線; 至少形成於该半導體層上的第一汲電極和第二汲電 β 極,其位於該第一閘極線與該資料線之交又點附近; 至少形成於該半導體層上的第三汲電極和第四汲電 極,其位於該第二閘極線與該資料線之交又點附近; 一形成於該閘極絕緣層上之I馬合電極; -形成於該資料線、該等第—至第四沒電極、以及該 搞合=極上之鈍化層,其具有複數個接觸孔而得以曝露 該等第一至第四汲電極及該耦合電極; 汲電極及該 一开彡成於該鈍化層上且被連接至該第 搞合電極之第一像素電極; 沒電極之弟 开> 成於該鈍化層上且被連接至該第 二像素電極; 汲電極之第 形成於該鈍化層上且被連接至該第 三像素電極; 一形成於該鈍化層上且被連接至該第四汲電極之第 8642ΐ-95ΐ_ί0,包極,該第四像素電極局部重疊於該耦合電極; -4 - 1272427 =絕緣基板 一面對該第一絕緣基板之第 形成於該第二絕緣基板上之通用電極; 插入於該第一與第-绍络並 罘一、、、巴、、彖基板間之液晶層;以及 一形成於該第一 一絕緣基板上之晶 數個晶疇, 繞緣基板及該第二絕緣基板中至少 可刀隔構件,其將該液晶層分隔成複 其中使該等晶疇之兩邊長邊相對於該閘極線或該資 料線大體上呈約45。角。 10·如申請專利範圍第9項之液晶顯示器,其中該第一像素 電極佔據該第-像素電極及該第四像素電極整體面積 之約 50-80%。 11. 如申請專利範圍第1G項之液晶顯示器,其中在將電恩供 應至孩第一薄扠電晶體之後將電壓供應至該第四薄膜 電晶體。 12.如申請專利範圍第9項之液晶顯示器,其中該第一像素 電極之臨限電壓比該第四像素電極之臨限電壓低約 0.4-1.0 V 86421-951004.DOC 5-
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TWI392946B (zh) * | 2009-12-18 | 2013-04-11 | Au Optronics Corp | 畫素結構 |
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