KR102356827B1 - 박막 트랜지스터 기판 및 그 제조 방법 - Google Patents
박막 트랜지스터 기판 및 그 제조 방법 Download PDFInfo
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- 229910052581 Si3N4 Inorganic materials 0.000 description 18
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Abstract
Description
도 2는 도 1의 I-I'라인을 따라 절단한 단면도이다.
도 3 내지 도 12는 도 2의 박막 트랜지스터 기판의 제조 방법을 나타낸 단면도들이다.
도 13은 본 발명의 일 실시예에 따른 박막 트랜지스터 기판을 나타낸 평면도이다.
도 14는 도 13의 II-II'라인을 따라 절단한 단면도이다.
도 15 내지 도 20은 도 14의 박막 트랜지스터 기판의 제조 방법을 나타낸 단면도들이다.
도 21은 본 발명의 일 실시예에 따른 박막 트랜지스터 기판을 나타낸 평면도이다.
도 22는 도 21의 III-III'라인을 따라 절단한 단면도이다.
도 23 내지 도 28은 도 22의 박막 트랜지스터 기판의 제조 방법을 나타낸 단면도들이다.
DL : 데이터 라인 SE : 소스 전극
DE : 드레인 전극 AP : 액티브 패턴
PE : 화소 전극 CE : 공통 전극
CP: 커버 패턴 120: 제1 패시베이션층
130: 유기막 160: 제2 패시베이션층
Claims (20)
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 제1 방향으로 연장되는 게이트 라인과 전기적으로 연결되는 게이트 전극, 상기 게이트 전극과 중첩하는 액티브 패턴, 상기 제1 방향과 교차하는 제2 방향으로 연장되는 데이터 라인과 전기적으로 연결되고, 상기 액티브 패턴 상에 배치되는 소스 전극 및 상기 소스 전극과 이격되어 배치되는 드레인 전극을 포함하는 스위칭 소자;
상기 스위칭 소자 상에 배치되는 유기막;
상기 유기막 상에 배치되는 제1 전극;
상기 제1 전극과 중첩하며, 상기 드레인 전극과 전기적으로 연결되는 제2 전극;
상기 제1 전극과 상기 제2 전극 사이에 배치되어 상기 제1 전극과 상기 제2 전극을 절연시키고, 상기 드레인 전극 및 상기 유기막을 부분적으로 노출시키는 컨택홀을 갖는 패시베이션층; 및
상기 컨택홀 내에 배치되며, 상기 노출되는 유기막을 커버하고, 투명 도전성 물질을 포함하며, 상기 제1 전극과 동일한 층에 배치되는 커버 패턴을 포함하는 박막 트랜지스터 기판. - 제7항에 있어서, 상기 커버 패턴은 상기 노출되는 유기막 및 상기 노출되는 드레인 전극을 커버하는 것을 특징으로 하는 박막 트랜지스터 기판.
- 삭제
- 제8항에 있어서, 상기 커버 패턴은 상기 제1 전극과 절연되고, 상기 제2 전극과 전기적으로 연결되는 것을 특징으로 하는 박막 트랜지스터 기판.
- 제7항에 있어서, 상기 제1 전극 및 상기 제2 전극은 투명 도전성 물질을 포함하는 것을 특징으로 하는 박막 트랜지스터 기판.
- 제7항에 있어서, 상기 유기막은 표면에 복수개의 요철이 형성되는 구조를 가지며, 상기 요철들의 평균 높이는 300Å 이하인 것을 특징으로 하는 박막 트랜지스터 기판.
- 베이스 기판 위에, 제1 방향으로 연장되는 게이트 라인, 상기 게이트 라인과 전기적으로 연결되는 게이트 전극을 포함하는 게이트 금속 패턴을 형성하는 단계;
상기 게이트 전극과 중첩하는 액티브 패턴을 형성하는 단계;
상기 제1 방향과 교차하는 제2 방향으로 연장되는 데이터 라인, 상기 데이터라인과 전기적으로 연결되고, 상기 액티브 패턴 상에 배치되는 소스 전극 및 상기 소스 전극과 이격되어 배치되는 드레인 전극을 포함하는 데이터 금속 패턴을 형성하는 단계;
상기 데이터 금속 패턴 상에 유기막을 형성하는 단계;
상기 유기막 상에 제1 전극을 형성하는 단계;
상기 제1 전극 상에 상기 유기막과 접촉하는 패시베이션층을 형성하는 단계;
상기 패시베이션층을 7kW 내지 13kW의 전력을 이용한 건식 식각 방법으로 식각하여 상기 유기막과 상기 드레인 전극을 부분적으로 노출시키는 컨택홀을 형성하는 단계; 및
상기 패시베이션층 상에 상기 드레인 전극과 전기적으로 연결되는 제2 전극을 형성하는 단계를 포함하고,
상기 제1 전극을 형성하는 단계는 상기 컨택홀 내에 배치되며 상기 노출되는 유기막을 커버하고 투명 도전성 물질을 포함하며 상기 제1 전극과 동일한 층에 배치되는 커버 패턴을 형성하는 단계를 더 포함하는 박막 트랜지스터 기판의 제조 방법. - 제13항에 있어서, 상기 제2 전극의 두께는 상기 제1 전극의 두께보다 두꺼운 것을 특징으로 하는 박막 트랜지스터 기판의 제조 방법.
- 제14항에 있어서, 상기 제2 전극의 두께는 750Å 이상 1000Å 이하인 것을 특징으로 하는 박막 트랜지스터 기판의 제조 방법.
- 삭제
- 삭제
- 제13항에 있어서, 상기 커버 패턴은 상기 노출되는 유기막 및 상기 노출되는 드레인 전극을 커버하는 것을 특징으로 하는 박막 트랜지스터 기판의 제조 방법.
- 제13항에 있어서, 상기 커버 패턴은 상기 제1 전극과 절연되고, 상기 제2 전극과 전기적으로 연결되는 것을 특징으로 하는 박막 트랜지스터 기판의 제조 방법.
- 제13항에 있어서, 상기 제1 전극 및 상기 제2 전극은 투명 도전성 물질을 포함하는 것을 특징으로 하는 박막 트랜지스터 기판의 제조 방법.
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