JP4050737B2 - 液晶表示素子の製造方法 - Google Patents
液晶表示素子の製造方法 Download PDFInfo
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- JP4050737B2 JP4050737B2 JP2004319001A JP2004319001A JP4050737B2 JP 4050737 B2 JP4050737 B2 JP 4050737B2 JP 2004319001 A JP2004319001 A JP 2004319001A JP 2004319001 A JP2004319001 A JP 2004319001A JP 4050737 B2 JP4050737 B2 JP 4050737B2
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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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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/673—Thin-film transistors [TFT] characterised by the electrodes characterised by the shapes, relative sizes or dispositions of the gate electrodes
-
- 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
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/6737—Thin-film transistors [TFT] characterised by the electrodes characterised by the electrode materials
- H10D30/6739—Conductor-insulator-semiconductor electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/441—Interconnections, e.g. scanning lines
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
-
- 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
- G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
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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)
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Thin Film Transistor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Weting (AREA)
Description
ゲートメタルを構成するモリブデン層は、本発明のエッチャント成分のうち、硝酸と反応する。
2Mo → 2Mo3+ + 6e-
2H+ + 6e- → 3H2(硝酸(HNO3)から由来)
2Mo + 6H+ → 2Mo3+ + 3H2
前記反応式のように、モリブデン層は、硝酸との酸化、還元反応によって除去される。
また、ゲートメタルのうちアルミニウム合金層は、アルミニウムと本発明のエッチャントのうち硝酸鉄(Fe(NO3)3)と反応して除去される。
Al →Al3+ + 3e-
3Fe3+ 3e- → 3Fe2+(鉄化合物(例、(Fe(NO3)3)から由来)
Al + 3Fe3+ → Al3+ + 3Fe2+
前記反応式によって、アルミニウム層は、エッチャントのうち鉄化合物(例、Fe(NO3)3)との酸化、還元反応によって除去される。
Claims (23)
- 基板を準備する段階と、
前記基板上に第1エッチャントを使用してゲートラインを形成する段階と、
前記ゲートライン上に絶縁層を形成する段階と、
前記絶縁層上の一部に半導体層を形成する段階と、
前記絶縁層上にテストラインを形成し、前記半導体層上にソース及びドレイン電極を形成する段階と、
前記基板上にゲートラインを露出させるパッシべーションホールを備える保護膜を形成する段階と、
前記保護膜上に硝酸(HNO3)、鉄化合物、過塩素酸(HClO4)、及びフッ素化合物を含む第2エッチャントを適用して画素電極を形成する段階と、
を含むことを特徴とする液晶表示素子製造方法。 - 前記第1エッチャント及び第2エッチャントは、同一の組成を有することを特徴とする請求項1に記載の液晶表示素子製造方法。
- 前記ゲートラインを形成する段階は、
アルミニウム合金層を形成する段階と、前記アルミニウム合金層上にモリブデン層を形成する段階と、を含むことを特徴とする請求項1に記載の液晶表示素子製造方法。 - 前記ゲートラインを形成する段階は、静電気防止回路部の形成段階をさらに含むことを特徴とする請求項3に記載の液晶表示素子製造方法。
- 前記パッシべーションホールを形成する段階は、
前記保護層上に画素電極物質を形成する段階と、
前記パッシべーションホール内の画素電極物質を除去する段階と、
前記パッシべーションホールの下部のゲートラインを除去して前記静電気防止回路とゲートラインとを分離する段階と、を含むことを特徴とする請求項4に記載の液晶表示素子製造方法。 - 前記パッシべーションホール内の画素電極物質及びゲートラインは、前記第2エッチャントによって除去されることを特徴とする請求項5に記載の液晶表示素子製造方法。
- 前記パッシべーションホールを形成する段階は、
前記テストラインを露出させる第1コンタクトホール、ゲートパッドを形成するための第2コンタクトホール及びドレイン電極と画素電極とを連結するための第3コンタクトホールを形成する段階をさらに含むことを特徴とする請求項1に記載の液晶表示素子製造方法。 - 前記第1コンタクトホール、第2コンタクトホール及び第3コンタクトホールは、同時に形成されることを特徴とする請求項7に記載の液晶表示素子製造方法。
- 前記画素電極を形成する段階は、前記ゲートパッドを形成する段階をさらに含むことを特徴とする請求項1に記載の液晶表示素子製造方法。
- 前記ゲートラインの露出部は、偶数番目のゲートラインを含むことを特徴とする請求項1に記載の液晶表示素子製造方法。
- 前記画素電極は、非晶質ITOで構成されることを特徴とする請求項1に記載の液晶表示素子製造方法。
- 前記第1エッチャントは、硝酸(HNO3)、鉄化合物、過塩素酸(HClO4)、及びフッ素化合物を含むことを特徴とする請求項1に記載の液晶表示素子製造方法。
- 前記鉄化合物は、Fe(NO3)3、FeCl3、Fe2(SO4)3、NH4Fe(SO4)2のうちいずれか1つであることを特徴とする請求項12に記載の液晶表示素子製造方法。
- 前記フッ素化合物は、NH4F、NH4HF2、HF、NaF及びKFのうちいずれか1つであることを特徴とする請求項12に記載の液晶表示素子製造方法。
- 前記第1エッチャントの硝酸(HNO3)、鉄化合物、過塩素酸(HClO4)、フッ素化合物の重量比は、それぞれ7〜12wt%、2〜4wt%、1〜4wt%、0.1〜2.0wt%であることを特徴とする請求項12に記載の液晶表示素子製造方法。
- 前記エッチャントは、10wt%のHNO3、3wt%のFe(NO3)3、3wt%のHClO4、0.4wt%のNH4Fを含むことを特徴とする請求項15に記載の液晶表示素子製造方法。
- 前記過塩素酸(HClO4)の代わりに硫酸(H2SO4)、次亜塩素酸(HClO)、亜塩素酸(HClO2)、または塩素酸(HClO3)のうちいずれか1つが使用されることを特徴とする請求項12に記載の液晶表示素子製造方法。
- 基板を準備する段階と、
前記基板上にゲートライン及び短絡バーを形成する段階と、
前記ゲートライン上に絶縁層を形成する段階と、
前記絶縁層の一部に半導体層を形成する段階と、
前記絶縁層上にテストラインを形成し、前記半導体層上にソース及びドレイン電極を形成する段階と、
前記ゲートラインを露出させるパッシべーションホールを備える保護層を形成する段階と、
硝酸(HNO3)、鉄化合物、過塩素酸(HClO4)、フッ素化合物を含むエッチャントを使用して画素電極をパターニングし、前記パッシべーションホール内の画素電極物質及びゲートラインを除去する段階と、
を含むことを特徴とする液晶表示素子製造方法。 - 前記ゲートラインは、硝酸(HNO3)、鉄化合物、過塩素酸(HClO4)、フッ素化合物を含む第1エッチャントによりエッチングされることを特徴とする請求項18に記載の液晶表示素子製造方法。
- 前記鉄化合物は、鉄(III)イオンを提供することを特徴とする請求項18に記載の液晶表示素子製造方法。
- 前記フッ素化合物は、フッ素イオンを提供することを特徴とする請求項18に記載の液晶表示素子製造方法。
- 前記第1エッチャントの硝酸(HNO3)、鉄化合物、過塩素酸(HClO4)、フッ素化合物の重量比は、それぞれ7〜12wt%、2〜4wt%、1〜4wt%、0.1〜2.0wt%であることを特徴とする請求項19に記載の液晶表示素子製造方法。
- 前記エッチャントは、10wt%のHNO3、3wt%のFe(NO3)3、3wt%のHClO4、0.4wt%のNH4Fを含むことを特徴とする請求項21に記載の液晶表示素子製造方法。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030077624A KR100575233B1 (ko) | 2003-11-04 | 2003-11-04 | 액정표시장치 제조 방법 |
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| Publication Number | Publication Date |
|---|---|
| JP2005141221A JP2005141221A (ja) | 2005-06-02 |
| JP4050737B2 true JP4050737B2 (ja) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2004319001A Expired - Lifetime JP4050737B2 (ja) | 2003-11-04 | 2004-11-02 | 液晶表示素子の製造方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7223642B2 (ja) |
| JP (1) | JP4050737B2 (ja) |
| KR (1) | KR100575233B1 (ja) |
| CN (1) | CN1614483A (ja) |
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| KR101873583B1 (ko) | 2011-01-12 | 2018-07-03 | 동우 화인켐 주식회사 | 액정표시장치용 어레이 기판의 제조방법 |
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| KR100239749B1 (ko) * | 1997-04-11 | 2000-01-15 | 윤종용 | 그로스 테스트용 tft 소자 제조 방법 및 이를 형성한 액정 표시 장치 구조와 그로스 테스트 장치 및 방법 |
| JP2003282880A (ja) * | 2002-03-22 | 2003-10-03 | Hitachi Displays Ltd | 表示装置 |
| KR100870013B1 (ko) * | 2002-08-27 | 2008-11-21 | 삼성전자주식회사 | 박막 트랜지스터 어레이 기판 및 그 제조 방법 |
-
2003
- 2003-11-04 KR KR1020030077624A patent/KR100575233B1/ko not_active Expired - Lifetime
-
2004
- 2004-08-27 CN CNA2004100572971A patent/CN1614483A/zh active Pending
- 2004-09-23 US US10/947,335 patent/US7223642B2/en not_active Expired - Lifetime
- 2004-11-02 JP JP2004319001A patent/JP4050737B2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101873583B1 (ko) | 2011-01-12 | 2018-07-03 | 동우 화인켐 주식회사 | 액정표시장치용 어레이 기판의 제조방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005141221A (ja) | 2005-06-02 |
| KR20050042963A (ko) | 2005-05-11 |
| US20050095754A1 (en) | 2005-05-05 |
| KR100575233B1 (ko) | 2006-05-02 |
| US7223642B2 (en) | 2007-05-29 |
| CN1614483A (zh) | 2005-05-11 |
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