KR102424108B1 - 박막 트랜지스터 기판 및 이를 이용한 표시장치 - Google Patents
박막 트랜지스터 기판 및 이를 이용한 표시장치 Download PDFInfo
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- KR102424108B1 KR102424108B1 KR1020150166448A KR20150166448A KR102424108B1 KR 102424108 B1 KR102424108 B1 KR 102424108B1 KR 1020150166448 A KR1020150166448 A KR 1020150166448A KR 20150166448 A KR20150166448 A KR 20150166448A KR 102424108 B1 KR102424108 B1 KR 102424108B1
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Abstract
Description
도 2는 본 발명의 제1 실시 예에 의한 서로 다른 유형의 박막 트랜지스터들을 포함하는 평판 표시장치용 박막 트랜지스터 기판을 제조하는 과정을 나타내는 순서도.
도 3은 본 발명의 제2 실시 예에 의한 서로 다른 유형의 박막 트랜지스터들을 포함하는 평판 표시장치용 박막 트랜지스터 기판을 나타내는 단면도.
도 4는 본 발명의 제2 실시 예에 의한 서로 다른 유형의 박막 트랜지스터들을 포함하는 평판 표시장치용 박막 트랜지스터 기판을 제조하는 과정을 나타내는 순서도.
도 5는 본 발명의 제1 응용 예에 따른 표시장치의 구성을 개략적으로 보여 주는 블록도.
도 6은 본 발명의 제2 응용 예에 의한 수평 전계형의 일종인 프린지 필드 방식의 액정 표시장치에 포함된 산화물 반도체 층을 갖는 박막 트랜지스터 기판을 나타내는 평면도.
도 7은 도 6에 도시한 박막 트랜지스터 기판을 절취선 I-I' 선을 따라 자른 단면도.
도 8은 본 발명의 제3 응용 예에 의한 액티브 매트릭스 유기발광 다이오드 표시장치에서 한 화소의 구조를 나타내는 평면도.
도 9는 도 8에서 절취선 II-II'로 자른 액티브 매트릭스 유기발광 다이오드 표시장치의 구조를 나타내는 단면도.
도 10은 본 발명의 제4 응용 예에 의한 유기발광 다이오드 표시장치의 개략적인 구조를 나타내는 평면 확대도.
도 11은 도 10에서 절취선 III-III'으로 자른 도면으로 본 발명의 제4 응용 예에 의한 유기발광 다이오드 표시장치의 구조를 나타내는 단면도.
T1: 제1 박막 트랜지스터 T2: 제2 박막 트랜지스터
G1: 제1 게이트 전극 G2: 제2 게이트 전극
GI1: 제1 게이트 절연막 G2: 제2 게이트 절연막
A1: 제1 채널 영역 A2: 제2 채널 영역
S1: 제1 소스 전극 S2: 제2 소스 전극
D1: 제1 드레인 전극 D2: 제2 드레인 전극
LS1: 제1 차광층 LS2: 제2 차광층
PAS: 보호막 STG: 보조 용량
ST1: 제1 보조 용량 전극 ST2: 제2 보조 용량 전극
Claims (10)
- 다결정 반도체 층, 상기 다결정 반도체 층을 커버하는 제1 게이트 절연막, 상기 제1 게이트 절연막 위에 배치된 제1 게이트 전극, 제1 소스 전극 및 제1 드레인 전극을 포함하는 제1 박막 트랜지스터;
상기 제1 게이트 전극 위에 배치된 산화물 반도체 층, 상기 산화물 반도체 층 위에 배치된 제2 게이트 전극, 제2 소스 전극 및 제2 드레인 전극을 포함하는 제2 박막 트랜지스터;
상기 산화물 반도체 층 아래에서 상기 제1 게이트 전극을 덮는 중간 절연막; 그리고
상기 중간 절연막 위에서 상기 제1 소스 전극, 상기 제1 드레인 전극 및 상기 제2 게이트 전극 하부에 적층된 제2 게이트 절연막을 포함하는 박막 트랜지스터 기판.
- 제 1 항에 있어서,
상기 제1 소스 전극은, 상기 제2 게이트 절연막, 상기 중간 절연막 및 상기 제1 게이트 절연막을 관통하는 제1 소스 콘택홀을 통해 상기 다결정 반도체 층과 연결되고,
상기 제1 드레인 전극은, 상기 제2 게이트 절연막, 상기 중간 절연막 및 상기 제1 게이트 절연막을 관통하는 제1 드레인 콘택홀을 통해 상기 다결정 반도체 층과 연결되고,
상기 제2 게이트 전극은, 상기 제2 게이트 절연막을 사이에 두고 상기 산화물 반도체 층의 중앙 영역과 중첩하는 박막 트랜지스터 기판.
- 제 2 항에 있어서,
상기 제2 게이트 절연막은,
상기 제1 소스 전극과 동일한 외곽 형태를 갖는 제1 부분;
상기 제1 드레인 전극과 동일한 외곽 형태를 갖는 제2 부분; 그리고
상기 제2 게이트 전극과 동일한 외곽 형태를 갖는 제3 부분을 포함하는 박막 트랜지스터 기판.
- 제 1 항에 있어서,
상기 중간 절연막은, 하부에 배치된 질화막과 상기 질화막 위에 적층된 산화막을 포함하는 박막 트랜지스터 기판.
- 제 1 항에 있어서,
상기 제1 게이트 전극과 동일한 층에서 동일한 물질로 형성되어, 상기 산화물 반도체 층 아래에 배치된 제2 차광층을 더 포함하는 박막 트랜지스터 기판.
- 다결정 반도체 물질을 포함하는 제1 반도체 층;
상기 제1 반도체 층을 덮는 제1 게이트 절연막;
상기 제1 게이트 절연막 위에서 상기 제1 반도체 층과 중첩하는 제1 게이트 전극;
상기 제1 게이트 전극을 덮는 중간 절연막;
상기 중간 절연막 위에 배치된 제2 반도체 층;
상기 제2 반도체 층의 중앙부, 그리고 상기 제1 반도체 층의 일측부 및 타측부와 중첩하는 제2 게이트 절연막;
상기 제2 게이트 절연막 위에서 상기 제2 반도체 층의 상기 중앙부와 중첩하는 제2 게이트 전극;
상기 제2 게이트 절연막 위에서 상기 제1 반도체 층의 상기 일측부와 연결된 제1 소스 전극; 그리고
상기 제2 게이트 절연막 위에서 상기 제1 반도체 층의 상기 타측부와 연결된 제1 드레인 전극을 포함하는 박막 트랜지스터 기판.
- 제 6 항에 있어서,
상기 제1 소스 전극은, 상기 제2 게이트 절연막, 상기 중간 절연막 및 상기 제1 게이트 절연막을 관통하는 제1 소스 콘택홀을 통해 상기 제1 반도체 층의 상기 일측부와 연결되고,
상기 제1 드레인 전극은, 상기 제2 게이트 절연막, 상기 중간 절연막 및 상기 제1 게이트 절연막을 관통하는 제1 드레인 콘택홀을 통해 상기 제1 반도체 층의 상기 일측부와 연결되는 박막 트랜지스터 기판.
- 제 7 항에 있어서,
상기 제2 게이트 절연막은,
상기 제1 소스 전극과 동일한 외곽 형태를 갖는 제1 부분;
상기 제1 드레인 전극과 동일한 외곽 형태를 갖는 제2 부분; 그리고
상기 제2 게이트 전극과 동일한 외곽 형태를 갖는 제3 부분을 포함하는 박막 트랜지스터 기판.
- 제 6 항에 있어서,
상기 중간 절연막은, 하부에 배치된 질화막과 상기 질화막 위에 적층된 산화막을 포함하는 박막 트랜지스터 기판.
- 제 6 항에 있어서,
상기 제1 소스 전극, 상기 제1 드레인 전극 및 상기 제2 게이트 전극을 덮는 보호막;
상기 보호막에 형성되고 상기 제2 반도체 층의 일측부 및 타측부와 각각 연결되는 제2 소스 전극 및 제2 드레인 전극을 더 포함하는 박막 트랜지스터 기판.
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US15/352,951 US10121899B2 (en) | 2015-11-26 | 2016-11-16 | Thin film transistor substrate and display using the same |
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US20170155000A1 (en) | 2017-06-01 |
KR20240026479A (ko) | 2024-02-28 |
EP4102565A2 (en) | 2022-12-14 |
CN106803510A (zh) | 2017-06-06 |
KR102640220B1 (ko) | 2024-02-26 |
CN106803510B (zh) | 2020-10-30 |
KR20170061776A (ko) | 2017-06-07 |
EP3174097A1 (en) | 2017-05-31 |
KR20220103903A (ko) | 2022-07-25 |
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