JP4754877B2 - 液晶表示装置およびその製造方法 - Google Patents
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- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
- H01L27/1288—Multistep manufacturing methods employing particular masking sequences or specially adapted masks, e.g. half-tone mask
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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
- G02F1/136—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
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
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- 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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Description
図1と図2に図示された薄膜トランジスター基板は、下部基板42上にゲート絶縁膜44を間に置き交差するように形成されたゲートライン2およびデータライン4と、その交差部毎に形成された薄膜トランジスター6と、その交差構造で設けられたセル領域に形成された画素電極18を備える。そして、薄膜トランジスター基板は画素電極18と前端ゲートライン2の重なる部分に形成されたストレージキャパシタ20と、ゲートライン2に接続されるゲートパッド26と、データライン4に接続されるデータパッド34を備える。
次に、ストリップ工程でソース/ドレーンパターン上に残っているフォトレジストパターンが除去される。
これによって、ストレージキャパシタ20の容量増大のためにストレージ上部電極22とゲートライン2の重なる面積を増大させる場合、それ位画素電極18の開口率が減少する問題点がある。
図4は本発明の実施例による薄膜トランジスター基板を図示した平面図であり、図5は図4に図示された薄膜トランジスター基板をII−II’、III−III’、IV−IV’線に沿って切断して図示した断面図である。
図13は本発明の第3実施例による薄膜トランジスター基板を図示した平面図であり、図14は図13に図示された薄膜トランジスター基板をII−II’、III−III’、IV−IV’、V−V’線に沿って切断して図示した断面図である。
4,104:データライン
6,106:薄膜トランジスター
8,108:ゲート電極
10,110:ソース電極
12,112:ドレーン電極
14,114:活性層
16,24,30,38,116,130,138:コンタクトホール
18,118:画素電極
20,120,180,190:ストレージキャパシタ
22:ストレージ上部電極
26.126:ゲートパッド
28,128:ゲートパッド下部電極
32,132:ゲートパッド上部電極
34,134:データパッド
36,136:データパッド下部電極
40,140:データパッド上部電極
42,142:基板
44,144:ゲート絶縁膜
48,146:オーミック接触層
50,150:保護膜
101:第1導電層
103:第2導電層
105:ソース/ドレーン金属層
115:非晶質シリコン層
122,194:ストレージ下部電極
145:不純物ドーピングされた非晶質シリコン層
148:半導体パターン
160:ハーフトーンマスク
162,214:遮断層
164:部分透過層
166,212:石英基板
167,219:フォトレジスト
168,220:フォトレジストパターン
168A,220A:第1フォトレジストパターン
168B,220B:第2フォトレジストパターン
170:リペアライン
172:遮光パターン
182,192:共通ライン
210:回折露光マスク
216:スリット
Claims (4)
- ハーフトーンマスクを利用した第1マスク工程で基板上に第1導電層及び第2導電層を含む二重層構造のゲートライン、ゲート電極及びゲートパッド下部電極と前記ゲートラインの前記第1導電層から延長された単一層構造のストレージ下部電極と、前記ゲートラインの前記第2導電層から突き出された単一層構造の遮光パターンを含むゲートパターンを形成する段階と、
前記ゲートパターンを覆うゲート絶縁膜を形成する段階と、
回折露光マスクを利用した第2マスク工程で前記ゲート絶縁膜上にデータライン、ソース電極、ドレーン電極、データパッド下部電極を含むソース/ドレーンパターンと前記ソース/ドレーンパターンの背面に沿って重なる活性層及びオーミック接触層を含む半導体パターンを形成する段階と、
前記ソース/ドレーンパターンを覆う保護膜を形成し、第3マスク工程で前記ドレーン電極を露出させる第1コンタクトホールと、前記ゲートパッド下部電極を露出させる第2コンタクトホール及び前記データパッド下部電極を露出させる第3コンタクトホールを形成する段階と、
前記第1ないし第3コンタクトホールが形成された前記保護膜上に第3導電層を形成した後、第4マスク工程で前記第3導電層をパターニングして前記第1コンタクトホールを通じて前記ドレーン電極と接続される画素電極、前記第2コンタクトホールを通じて前記ゲートパッド下部電極と接続されるゲートパッド上部電極、
前記第3コンタクトホールを通じて前記データパッド下部電極と接続されるデータパッド上部電極を含む透明導電パターンを形成する段階を含み、
前記ゲートパターンを形成する段階は、
前記基板上に前記第1及び第2導電層を積層する段階と、
前記第2導電層上に前記ハーフトーンマスクを利用したフォトリソグラフィー工程で互いに異なる厚さを有する第1及び第2フォトレジストパターンを形成する段階と、
前記第1及び第2フォトレジストパターンを利用した蝕刻工程で前記第1及び第2導電層をパターニングして前記二重層構造のゲートライン及びゲート電極と、ストレージ下部電極を形成する段階と、
前記二重層構造のゲートライン、ゲート電極及びストレージ下部電極を形成した後、アッシング工程で前記第1フォトレジストパターンを薄くし前記第2フォトレジストパターンは除去する段階と、
前記第1フォトレジストパターンを利用した蝕刻工程で前記二重層構造のストレージ下部電極の第2導電層の一部を除去して前記第1及び第2導電層に一定の段差を形成し、前記第1導電層に形成される前記ストレージ下部電極と前記第2導電層に形成された前記遮光パターンを形成する段階と、
前記第1フォトレジストパターンを除去する段階を含み、
前記第1及び第3導電層は透明導電層であり、
前記遮光パターンは前記画素電極の両側部及び前記ストレージ下部電極と重なることを
特徴とする液晶表示装置の製造方法。
- 前記単一層構造のストレージ下部電極は前記ゲートラインの第1導電層から画素領域側へ突き出して形成されたことを特徴とする請求項1記載の液晶表示装置の製造方法。
- 前記ゲートパターンを形成する段階は前記ゲートラインの間毎に独立的に前記データラインと重なるリペアラインを形成する段階を追加に含むことを特徴とする請求項1記載の液晶表示装置の製造方法。
- 前記リペアラインは、単一層構造の前記ストレージ下部電極とともに形成されるか、二重層構造の前記ゲートラインとともに形成されることを特徴とする請求項3に記載の液晶表示装置の製造方法。
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KR100480333B1 (ko) | 2002-04-08 | 2005-04-06 | 엘지.필립스 엘시디 주식회사 | 액정표시장치용 어레이기판과 그 제조방법 |
KR100436181B1 (ko) | 2002-04-16 | 2004-06-12 | 엘지.필립스 엘시디 주식회사 | 액정표시장치용 어레이기판 제조방법 |
US7569153B2 (en) | 2002-05-23 | 2009-08-04 | Lg Display Co., Ltd. | Fabrication method of liquid crystal display device |
JP3605100B2 (ja) | 2002-07-15 | 2004-12-22 | 松下電器産業株式会社 | 液晶表示装置 |
KR100886241B1 (ko) * | 2002-09-10 | 2009-02-27 | 엘지디스플레이 주식회사 | 액정표시소자의 제조방법 |
KR100968560B1 (ko) * | 2003-01-07 | 2010-07-08 | 삼성전자주식회사 | 박막 트랜지스터 기판 및 박막 트랜지스터 기판의금속배선 형성방법 |
KR101030545B1 (ko) * | 2004-03-30 | 2011-04-21 | 엘지디스플레이 주식회사 | 액정표시소자 |
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2004
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- 2005-05-27 CN CNB2005100722761A patent/CN100397211C/zh not_active Expired - Fee Related
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US20080143903A1 (en) | 2008-06-19 |
KR20050112644A (ko) | 2005-12-01 |
CN1702530A (zh) | 2005-11-30 |
JP2005338855A (ja) | 2005-12-08 |
US7351623B2 (en) | 2008-04-01 |
KR101086477B1 (ko) | 2011-11-25 |
US20050263769A1 (en) | 2005-12-01 |
US8045072B2 (en) | 2011-10-25 |
CN100397211C (zh) | 2008-06-25 |
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