JP4850057B2 - 液晶表示装置及びその製造方法 - Google Patents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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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- 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
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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
-
- 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
-
- 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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
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- Condensed Matter Physics & Semiconductors (AREA)
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- Manufacturing & Machinery (AREA)
- Liquid Crystal (AREA)
- Thin Film Transistor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
液晶表示装置は、薄膜トランジスタ(TFT)を含むアレイ基板とカラーフィルター基板との間に液晶を注入して、液晶の異方性による光の屈折率の差を利用して映像効果を得る非発光画像表示装置に当たる。
ハンプが発生すると、薄膜トランジスタのオン/オフ時間の遅延が長引いて、スイッチング素子としての特性低下が発生する。
前記半導体層は、ポリシリコンを含み、また、前記半導体層は、前記チャンネル部と前記オーミックコンタクト部間に位置するLDD部をさらに含む。
前記半導体層は、ポリシリコンを含み、また、前記半導体層は、前記チャンネル部と前記オーミックコンタクト部間に位置するLDD部をさらに含む。
前記テーパー状の側面部を形成する段階は、ポリシリコン層を形成する段階と;前記ポリシリコン層上にフォトレジストパターンを形成する段階と;前記ポリシリコン層に対するドライエッチングと前記フォトレジストパターンに対するアッシングを同時に行う段階とを含む。
ここで、前記エッジ部は、少なくとも二つの階段を有したり、側面がテーパー状であったりする。
この時、半導体層、ゲート絶縁膜とゲート電極を除いた他の構成要素は、実施例1と類似であるので、半導体層、ゲート絶縁膜とゲート電極の構成要素の構造を主に説明する。
実施例1ないし3の場合、半導体層の形成方法だけに一部の差があって、それ以外の構成要素に対する製造方法は、類似に行われるため、実施例2を基準にその製造方法を説明する。また、実施例1及び実施例3については、構造が異なる半導体層の形成段階において、差異のある部分を主に説明する。
図12Aに示したように、ポリシリコン層112上に第5厚さt31及び第3幅w31を有するフォトレジストパターン181を形成する。
図12Bと図12Cに示したように、フォトレジストパターン181及びその外部に露出されたポリシリコン層112が形成された基板101を真空のチェンバーに移動させた後、チェンバー内にポリシリコンと反応するガス、すなわち、HBr、Cl2、SF6、Br2ガスまたはこれらガスの2種以上を混合した混合ガスとフォトレジストパターン181と反応するO2を少量注入した後、プラズマ処理を行ってドライエッチングを実施する。
前述したような工程を行って、本発明の実施例による液晶表示装置用アレイ基板を完成する。
205:バッファ層
215:半導体層
215a:チャンネル部
215b:オーミックコンタクト部
215c:LDD部
220:ゲート絶縁膜
235:ゲート電極
240:層間絶縁膜
245a、245b:半導体層コンタクトホール
250:ソース電極
253:ドレイン電極
260:保護層
263:ドレインコンタクトホール
270:画素電極
Claims (6)
- 基板上に、チャンネル部と、チャンネル部の両側のオーミックコンタクト部を有して、エッジ部の側面は、少なくとも二つの階段形状を有する、ポリシリコンからなる半導体層と、
半導体層を覆うゲート絶縁膜と、
ゲート絶縁膜上に位置して、前記チャンネル部に対応するゲート電極と、
前記半導体層と接触するソース電極及びドレイン電極と、
前記ドレイン電極と接触する画素電極とを含み、
前記エッジ部の周辺の前記ゲート絶縁膜の段差部は、前記ゲート絶縁膜の他の部分と実質的に同一な厚さであって、前記エッジ部の周辺の前記ゲート電極の段差部は、前記ゲート電極の他の部分と実質的に同一な厚さであることを特徴とする液晶表示装置。
- 前記半導体層は、前記チャンネル部と前記オーミックコンタクト部との間に位置するLDD部をさらに含むことを特徴とする請求項1に記載の液晶表示装置。
- 基板上に、チャンネル部と、チャンネル部の両側のオーミックコンタクト部を有して、エッジ部の側面は、少なくとも二つの階段形状を有する、ポリシリコンからなる半導体層を形成する段階と、
半導体層を覆うゲート絶縁膜を形成する段階と、
ゲート絶縁膜上に位置して、前記チャンネル部に対応するゲート電極を形成する段階と、
前記半導体層と接触するソース電極及びドレイン電極を形成する段階と、
前記ドレイン電極と接触する画素電極を形成する段階とを含み、
前記エッジ部の周辺の前記ゲート絶縁膜の段差部は、前記ゲート絶縁膜の他の部分と同一な厚さであって、前記エッジ部の周辺の前記ゲート電極の段差部は、前記ゲート電極の他の部分と実質的に同一な厚さであることを特徴とする液晶表示装置の製造方法。
- 前記少なくとも二つの階段形状を形成する段階は、
前記ポリシリコン層上にフォトレジストパターンを形成する段階と、
前記フォトレジストパターンを使用して、前記ポリシリコン層に対して第1ドライエッチングを行う段階と、
前記フォトレジストパターンをアッシングする段階と、
前記アッシングされたフォトレジストパターンを使用して、前記第1ドライエッチングされたポリシリコン層に対して第2ドライエッチングを行う段階とを含み、
前記第1ドライエッチング、アッシング、第2ドライエッチングは、少なくとも一度は繰り返す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。
- 前記オーミックコンタクト部を形成する段階は、前記少なくとも二つの階段を形成した後、前記ゲート電極をドーピングマスクとして使用して、n+又はp+に前記半導体層をドーピングする段階を含むことを特徴とする請求項4に記載の液晶表示装置の製造方法。
- 前記半導体層を形成する段階は、前記チャンネル部と前記オーミックコンタクト部との間にLDD部を形成する段階をさらに含む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。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2006-0040062 | 2006-05-03 | ||
KR1020060040062A KR101226974B1 (ko) | 2006-05-03 | 2006-05-03 | 액정표시장치용 어레이 기판 및 그 제조 방법 |
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JP2007298947A JP2007298947A (ja) | 2007-11-15 |
JP4850057B2 true JP4850057B2 (ja) | 2012-01-11 |
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JP2006351676A Active JP4850057B2 (ja) | 2006-05-03 | 2006-12-27 | 液晶表示装置及びその製造方法 |
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US (2) | US7727824B2 (ja) |
JP (1) | JP4850057B2 (ja) |
KR (1) | KR101226974B1 (ja) |
CN (1) | CN100538483C (ja) |
GB (1) | GB2439586B (ja) |
TW (1) | TWI330890B (ja) |
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JP2005057042A (ja) * | 2003-08-04 | 2005-03-03 | Mitsubishi Electric Corp | 薄膜トランジスタおよびその製造方法ならびに液晶表示装置およびその製造方法 |
KR20050047755A (ko) * | 2003-11-18 | 2005-05-23 | 삼성전자주식회사 | 박막 트랜지스터 표시판 |
KR100900404B1 (ko) * | 2003-12-22 | 2009-06-02 | 엘지디스플레이 주식회사 | 액정표시소자의 제조 방법 |
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TW200743217A (en) | 2007-11-16 |
CN100538483C (zh) | 2009-09-09 |
TWI330890B (en) | 2010-09-21 |
US7927931B2 (en) | 2011-04-19 |
JP2007298947A (ja) | 2007-11-15 |
GB2439586B (en) | 2008-12-10 |
KR20070107493A (ko) | 2007-11-07 |
GB0621464D0 (en) | 2006-12-06 |
US20070257289A1 (en) | 2007-11-08 |
US7727824B2 (en) | 2010-06-01 |
US20100200862A1 (en) | 2010-08-12 |
CN101067701A (zh) | 2007-11-07 |
KR101226974B1 (ko) | 2013-01-28 |
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