JP2018527623A - Va型coa液晶表示パネル - Google Patents
Va型coa液晶表示パネル Download PDFInfo
- Publication number
- JP2018527623A JP2018527623A JP2018513844A JP2018513844A JP2018527623A JP 2018527623 A JP2018527623 A JP 2018527623A JP 2018513844 A JP2018513844 A JP 2018513844A JP 2018513844 A JP2018513844 A JP 2018513844A JP 2018527623 A JP2018527623 A JP 2018527623A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- several
- liquid crystal
- display panel
- gate electrode
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 68
- 239000000758 substrate Substances 0.000 claims abstract description 133
- 239000000463 material Substances 0.000 claims abstract description 78
- 125000006850 spacer group Chemical group 0.000 claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 238000002161 passivation Methods 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 28
- 239000000565 sealant Substances 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 18
- 239000004065 semiconductor Substances 0.000 claims description 17
- 238000000059 patterning Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229920002120 photoresistant polymer Polymers 0.000 claims description 8
- 238000003491 array Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 abstract description 14
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 152
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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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
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- 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
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- G02F1/1362—Active matrix addressed cells
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F1/1333—Constructional arrangements; Manufacturing methods
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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
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G02F1/133514—Colour filters
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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
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- 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
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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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
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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
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
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- 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
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- 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
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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
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- 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)
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Abstract
Description
11 カラーフィルタ層
20 CF基板
21 ブラックマトリックス
22 スペーサ
100 下基板
100' TFT基板
110 第一基底基板
120 ゲート電極走査線
130 データ線
141 ゲート電極
142 半導体層
143 ソース電極
144 ドレイン電極
149 ゲート電極絶縁層
150 第一パッシベーション層
160 カラーフィルタ層
161 赤色のフィルターユニット
162 緑色のフィルターユニット
163 青色のフィルターユニット
170 カラー遮光層
171 第一遮光層
172 第二遮光層
191 画素電極
193 共通電極
200 上基板
210 第二基底基板
220 共通電極層
230 ブラックフォトスペーサ
231 メインブラックフォトスペーサ
232 サブブラックフォトスペーサ
240 ブラックシーリング層
300 液晶層
400 シール剤
Claims (16)
- 相互に対応するように設けられた上基板及び下基板と、上基板及び下基板の間に挟んで設けられた液晶層と、上基板及び下基板を密封してくっつけるのに用いられるシール剤と、からなるVA型COA液晶表示パネルであって、
前記下基板は、TFT基板と、前記TFT基板に設けられた第一パッシベーション層と、前記第一パッシベーション層に設けられたカラーフィルタ層と、前記カラーフィルタ層に設けられたカラー遮光層と、カラー遮光層に設けられた第二パッシベーション層と、第二パッシベーション層に設けられた画素電極及び共通電圧信号線及び共通電極と、からなり、
前記TFT基板は、第一基底基板と、第一基底基板に設けられた数本のゲート電極走査線と、数本のデータ線と、数個のTFTと、からなり、前記数本のゲート電極走査線及び数本のデータ線は、前記第一基底基板上で相互に絶縁した状態で交差することにより、複数のアレイ状に配列された画素領域を形成し、
前記カラー遮光層は、前記数本のゲート電極走査線の上方に対応するように配置された第一遮光層と、数本のデータ線の上方に対応するように配置された第二遮光層と、からなり、
前記第一遮光層は、赤色のカラーレジスト材料、または、青色のカラーレジスト材料からなり、
前記第二遮光層は、赤色カラーレジスト材料、緑色カラーレジスト材料、青色カラーレジスト材料の内の二種類を重ねることによってなり、
前記共通電極は、前記数本のゲート電極走査線の上方に対応するように配置されるとともに、前記共通電圧信号線と互いに接続される
ことを特徴とする、VA型COA液晶表示パネル。 - 前記上基板は、第二基底基板と、第二基底基板に設けられた共通電極層と、共通電極層に設けられた数個のブラックフォトスペーサと、ブラックシーリング層と、からなり、
前記数個のブラックフォトスペーサ及びブラックシーリング層の材料は、いずれも黒色の弾性材料であり、
前記数個のブラックフォトスペーサは、前記数本のゲート電極走査線及び数本のデータ線の上方に相互に対応するように配置され、
前記ブラックシーリング層は、前記シール剤の上方に相互に対応するように配置される
ことを特徴とする、請求項1に記載のVA型COA液晶表示パネル。 - 前記ブラックフォトスペーサは、メインブラックフォトスペーサと、サブブラックフォトスペーサと、からなる
ことを特徴とする、請求項2に記載のVA型COA液晶表示パネル。 - 前記ブラックフォトスペーサは錐形の柱状体である
ことを特徴とする、請求項2に記載のVA型COA液晶表示パネル。 - 前記シール剤は導電シール剤であり、前記シール剤は導電性金属ボールを備え、前記共通電極層はシール剤内の導電性金属ボール及び下基板上の共通電圧信号線によって互いに接続される
ことを特徴とする、請求項2に記載のVA型COA液晶表示パネル。 - 前記第二遮光層は、赤色カラーレジスト材料及び青色カラーレジスト材料を重ねることによってなる
ことを特徴とする、請求項2に記載のVA型COA液晶表示パネル。 - 前記カラーフィルタ層は、数個の画素領域内にそれぞれ対応するように配置された数個の赤、緑、青色のフィルターユニットからなり、前記赤、緑、青色フィルターユニットの材料は、それぞれ赤、緑、青色のフォトレジスト材料である
ことを特徴とする、請求項1に記載のVA型COA液晶表示パネル。 - 前記カラー遮光層及びカラーフィルタ層内の同じ材料の一部は同時に形成する
ことを特徴とする、請求項6に記載のVA型COA液晶表示パネル。 - 前記数個のTFTは、数個の画素領域内に対応するように配置され、前記TFTは、ゲート電極と、半導体層と、ソース電極と、ドレイン電極と、からなり、
前記下基板は、さらに、第一基底基板及び数個のTFT内のゲート電極に形成されるゲート電極絶縁層を備え、前記半導体層は前記ゲート電極絶縁層に形成され、前記ソース電極及びドレイン電極は前記ゲート電極絶縁層及び前記半導体層に形成され、前記ソース電極及びドレイン電極はそれぞれ前記半導体層の両端と互いに接し、
前記第一パッシベーション層及び第二パッシベーション層が対応する前記ドレイン電極の上方に、さらにビアホールが設けられ、前記画素電極は、前記ビアホール及び前記ドレイン電極によって互いに接続される
ことを特徴とする、請求項1に記載のVA型COA液晶表示パネル。 - 前記数本のゲート電極走査線及び数個のTFTのゲート電極は、同一の金属層をパターニングする製造プロセスによって得られ、
前記数本のデータ線及び数個のTFTのソース電極及びドレイン電極は、同一の金属層をパターニングする製造プロセスによって得られ、
前記画素電極、共通電圧信号線、共通電極は、同一の透明導電層をパターニングする製造プロセスによって得られ、
前記透明導電層の材料はITOである
ことを特徴とする、請求項9に記載のVA型COA液晶表示パネル。 - 相互に対応するように設けられた上基板及び下基板と、上基板及び下基板の間に挟んで設けられた液晶層と、上基板及び下基板を密封してくっつけるのに用いられるシール剤と、からなるVA型COA液晶表示パネルであって、
前記下基板は、TFT基板と、前記TFT基板に設けられた第一パッシベーション層と、前記第一パッシベーション層に設けられたカラーフィルタ層と、前記カラーフィルタ層に設けられたカラー遮光層と、カラー遮光層に設けられた第二パッシベーション層と、第二パッシベーション層に設けられた画素電極と、共通電圧信号線と、共通電極と、からなり、
前記TFT基板は、第一基底基板と、第一基底基板に設けられた数本のゲート電極走査線と、数本のデータ線と、数個のTFTと、からなり、前記数本のゲート電極走査線及び数本のデータ線は、前記第一基底基板上で相互に絶縁した状態で交差することにより、複数のアレイ状に配列された画素領域を形成し、
前記カラー遮光層は、前記数本のゲート電極走査線の上方に相互に対応するように配置される第一遮光層と、数本のデータ線の上方に相互に対応するように配置される第二遮光層と、からなり、
前記第一遮光層は、赤色のカラーレジスト材料、または、青色のカラーレジスト材料からなり、
前記第二遮光層は、赤色カラーレジスト材料、緑色カラーレジスト材料、青色カラーレジスト材料の内の二種類を重ねることによってなり、
前記共通電極は、前記数本のゲート電極走査線の上方に相互に対応するように配置され、前記共通電圧信号線と互いに接続され、
その内、前記上基板は、第二基底基板と、第二基底基板に設けられた共通電極層と、共通電極層に設けられた数個のブラックフォトスペーサと、ブラックシーリング層と、からなり、
前記数個のブラックフォトスペーサ及びブラックシーリング層の材料は、いずれも黒色の弾性材料であり、
前記数個のブラックフォトスペーサは、前記数本のゲート電極走査線及び数本のデータ線の上方に相互に対応するように配置され、
前記ブラックシーリング層は、前記シール剤の上方に相互に対応するように配置され、
その内、前記ブラックフォトスペーサは、メインブラックフォトスペーサと、サブブラックフォトスペーサと、からなり、
その内、前記ブラックフォトスペーサは錐形の柱状体であり、
その内、前記シール剤は導電シール剤であり、前記シール剤は導電性金属ボールを備え、前記共通電極層はシール剤内の導電性金属ボール及び下基板上の共通電圧信号線によって互いに接続される
ことを特徴とする、VA型COA液晶表示パネル。 - 前記第二遮光層は、赤色カラーレジスト材料及び青色カラーレジスト材料を重ねることによってなる
ことを特徴とする、請求項11に記載のVA型COA液晶表示パネル。 - 前記カラーフィルタ層は、数個の画素領域内にそれぞれ対応して位置する数個の赤、緑、青色のフィルターユニットからなり、
前記赤、緑、青色フィルターユニットの材料は、それぞれ赤、緑、青色のフォトレジスト材料である
ことを特徴とする、請求項11に記載のVA型COA液晶表示パネル。 - 前記カラー遮光層及びカラーフィルタ層内の同じ材料の一部は、同時に形成する
ことを特徴とする、請求項12に記載のVA型COA液晶表示パネル。 - 前記数個のTFTは、数個の画素領域内に対応して位置し、前記TFTは、ゲート電極と、半導体層と、ソース電極と、ドレイン電極と、からなり、
前記下基板は、さらに、第一基底基板及び数個のTFT内のゲート電極に形成されるゲート電極絶縁層を備え、
前記半導体層は前記ゲート電極絶縁層に形成され、前記ソース電極及びドレイン電極は前記ゲート電極絶縁層及び前記半導体層に形成され、前記ソース電極及びドレイン電極はそれぞれ前記半導体層の両端と互いに接し、
前記第一パッシベーション層及び第二パッシベーション層が対応する前記ドレイン電極の上方に、さらにビアホールが設けられ、
前記画素電極は、前記ビアホール及び前記ドレイン電極によって互いに接続される
ことを特徴とする、請求項11に記載のVA型COA液晶表示パネル。 - 前記数本のゲート電極走査線及び数個のTFTのゲート電極は、同一の金属層をパターニングする製造プロセスによって得られ、
前記数本のデータ線及び数個のTFTのソース電極及びドレイン電極は、同一の金属層をパターニングする製造プロセスによって得られ、
前記画素電極、共通電圧信号線、共通電極は、同一の透明導電層をパターニングする製造プロセスによって得られ、
前記透明導電層の材料はITOである
ことを特徴とする、請求項15に記載のVA型COA液晶表示パネル。
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- 2016-02-16 CN CN201610087805.3A patent/CN105511189B/zh active Active
- 2016-02-26 JP JP2018513844A patent/JP6542986B2/ja active Active
- 2016-02-26 GB GB1802026.3A patent/GB2557085B/en not_active Expired - Fee Related
- 2016-02-26 KR KR1020187006539A patent/KR102033263B1/ko active IP Right Grant
- 2016-02-26 US US15/031,278 patent/US20180052347A1/en not_active Abandoned
- 2016-02-26 WO PCT/CN2016/074622 patent/WO2017140000A1/zh active Application Filing
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JP6542986B2 (ja) | 2019-07-10 |
KR102033263B1 (ko) | 2019-10-16 |
GB2557085A (en) | 2018-06-13 |
GB2557085B (en) | 2021-06-09 |
CN105511189A (zh) | 2016-04-20 |
CN105511189B (zh) | 2018-10-26 |
GB201802026D0 (en) | 2018-03-28 |
WO2017140000A1 (zh) | 2017-08-24 |
KR20180037047A (ko) | 2018-04-10 |
US20180052347A1 (en) | 2018-02-22 |
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