KR102126552B1 - 표시 장치 - Google Patents
표시 장치 Download PDFInfo
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- KR102126552B1 KR102126552B1 KR1020170175054A KR20170175054A KR102126552B1 KR 102126552 B1 KR102126552 B1 KR 102126552B1 KR 1020170175054 A KR1020170175054 A KR 1020170175054A KR 20170175054 A KR20170175054 A KR 20170175054A KR 102126552 B1 KR102126552 B1 KR 102126552B1
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Abstract
Description
도 2는 도 1에서 선"I-I'"를 따라 절취한 표시 장치를 나타내는 단면도이다.
도 3a 및 도 3b는 도 1에 도시된 액티브 영역에 배치되는 서브 화소들을 나타내는 평면도이다.
도 4a 및 도 4b는 도 1에 도시된 벤딩 영역에 배치되는 신호 링크의 실시예들을 나타내는 평면도이다.
도 5a 및 도 5b는 도 1에 도시된 표시 장치의 각 서브 화소를 설명하기 위한 회로도들이다.
도 6은 도 5b에 도시된 서브 화소를 나타내는 평면도이다.
도 7은 도 6에서 선 Ⅱ-Ⅱ', Ⅲ-Ⅲ', Ⅳ-Ⅳ', Ⅴ-Ⅴ', Ⅵ-Ⅵ'를 따라 절취한 유기 발광 표시 장치를 나타내는 단면도이다.
도 8a 내지 도 8c는 도 7에 도시된 스토리지 커패시터의 다른 실시예들을 나타내는 단면도들이다.
도 9a 및 도 9b는 도 7에 도시된 벤딩 영역의 다른 실시예들을 나타내는 단면도들이다.
도 10a 내지 도 10m은 도 7에 도시된 유기 발광 표시 장치의 제조 방법을 설명하기 위한 단면도들이다.
106,156 : 소스 전극 108,110 : 드레인 전극
130 : 발광 소자 154 : 다결정 반도체층
162 : 저전위 공급 라인 172 : 고전위 공급 라인
176, LK : 신호 링크 180 : 스토리지 커패시터
192,194 : 개구부
Claims (17)
- 액티브 영역과 벤딩 영역을 가지는 기판과;
상기 액티브 영역에 배치되며, 다결정 반도체층, 제1 게이트 전극, 제1 소스 전극 및 제1 드레인 전극을 가지는 제1 박막트랜지스터와;
상기 액티브 영역에 배치되며, 산화물 반도체층, 제2 게이트 전극, 제2 소스 전극 및 제2 드레인 전극을 가지는 제2 박막트랜지스터와;
상기 제2 박막트랜지스터와 접속된 발광 소자와;
상기 제1 게이트 전극과 상기 산화물 반도체층 사이에 배치되며, SiNx로 이루어진 적어도 한 층의 하부 층간 절연막과;
상기 하부 층간 절연막과 상기 산화물 반도체층 사이에 배치되며, SiOx로 이루어진 상부 버퍼층과;
상기 액티브 영역에 배치되는 다수의 컨택홀과;
상기 벤딩 영역에 배치되는 상기 하부 층간 절연막 및 상기 상부 버퍼층을 제거하여 상기 하부 층간 절연막 및 상기 상부 버퍼층의 측면을 노출시키는 하부 개구부와;
상기 산화물 반도체층과 상기 제2 소스 및 제2 드레인 전극 사이에 배치되는 상부 층간 절연막을 관통하며, 상기 벤딩 영역에서 상기 하부 개구부와 상하로 중첩되게 배치되는 상부 개구부를 구비하며,
상기 제2 소스 전극은 상기 제2 드레인 전극 방향으로 연장되어 상기 제2 게이트 전극과 중첩되고, 상기 제2 소스 전극은 상기 발광 소자의 애노드 전극과 접속되며,
상기 다수의 컨택홀은
상기 제1 소스 및 제1 드레인 전극 각각과 상기 다결정 반도체층 사이에 배치되는 상기 하부 층간 절연막 및 상기 상부 버퍼층과 상기 상부 층간 절연막을 포함하는 다수의 절연막을 관통하여, 상기 다결정 반도체층을 노출시키는 제1 소스 및 제1 드레인 컨택홀과;
상기 상부 층간 절연막을 관통하여 상기 산화물 반도체층을 노출시키는 제2 소스 및 제2 드레인 컨택홀을 구비하며,
상기 상부 개구부는 상기 제2 소스 및 제2 드레인 컨택홀과 동일 깊이를 가지며,
상기 하부 개구부는 상기 제1 소스 및 제1 드레인 컨택홀보다 깊은 깊이를 가지는 표시 장치. - 제 1 항에 있어서,
상기 제1 소스 및 제1 드레인 전극과, 제2 소스 및 제2 드레인 전극 상에 배치되는 보호막을 더 구비하며,
상기 다수의 절연막은
상기 다결정 반도체층과 상기 하부 층간 절연막 사이에 배치되는 하부 게이트 절연막을 더 포함하는 표시 장치. - 제 2 항에 있어서,
상기 산화물 반도체층과 중첩되며, 상기 하부 층간 절연막 및 상부 버퍼층을 사이에 두고 상기 제2 게이트 전극과 중첩되는 차광층을 더 구비하며,
상기 제2 게이트 전극은 상기 제2 소스 전극과 상기 상부 층간 절연막을 사이에 두고 중첩되어 제1 스토리지 커패시터를 이루며, 상기 제2 게이트 전극은 상기 차광층과 제2 스토리지 커패시터를 이루며,
상기 제1 및 제2 스토리지 커패시터는 병렬로 접속되는 표시 장치. - 제 2 항에 있어서,
상기 제2 소스 전극과 상기 보호막을 사이에 두고 중첩되는 스토리지 전극을 더 구비하며,
상기 제2 소스 전극은 상기 제2 게이트 전극과 상기 상부 층간 절연막을 사이에 두고 중첩되어 제1 스토리지 커패시터를 이루며, 상기 제2 소스 전극은 상기 스토리지 전극과 제2 스토리지 커패시터를 이루며,
상기 제1 및 제2 스토리지 커패시터는 병렬로 접속되는 표시 장치. - 제 2 항에 있어서,
상기 제2 소스 전극과, 보호막을 사이에 두고 중첩되는 스토리지 전극과;
상기 제2 게이트 전극과, 하부 층간 절연막 및 상부 버퍼층을 사이에 두고 중첩되는 차광층을 더 구비하며,
상기 제2 소스 전극은 상기 제2 게이트 전극과 상기 상부 층간 절연막을 사이에 두고 중첩되어 제1 스토리지 커패시터를 이루며, 상기 제2 소스 전극은 상기 스토리지 전극과 제2 스토리지 커패시터를 이루며, 상기 차광층은 상기 제2 게이트 전극과 제3 스토리지 커패시터를 이루며,
상기 제1 내지 제3 스토리지 커패시터는 병렬로 접속되는 표시 장치. - 제 4 항 또는 제 5 항에 있어서,
상기 보호막 상에 배치되는 제1 평탄화층과;
상기 상부 층간 절연막 상에 배치되는 제2 소스 전극과 접촉하며 상기 제1 평탄화층 상에 배치되는 화소 연결 전극과;
상기 화소 연결 전극을 덮도록 배치되는 제2 평탄화층을 더 구비하는 표시 장치. - 제 6 항에 있어서,
상기 스토리지 전극은 상기 제1 평탄화층을 관통하는 스토리지 홀에 의해 노출된 상기 보호막 상에 배치되며,
상기 스토리지 전극은 상기 화소 연결 전극과 동일 재질로 이루어진 표시 장치. - 제 2 항에 있어서,
상기 제1 소스 및 제1 드레인 컨택홀은
상기 하부 게이트 절연막, 상기 하부 층간 절연막, 상기 상부 버퍼층을 관통하는 하부 영역과, 상기 상부 층간 절연막을 관통하는 상부 영역을 가지며,
상기 상부 개구부는 상기 제1 소스 컨택홀의 상부 영역 및 상기 제1 드레인 컨택홀의 상부 영역과 동일 깊이를 가지며,
상기 하부 개구부는 상기 제1 소스 컨택홀의 하부 영역 및 제1 드레인 컨택홀의 하부 영역보다 깊은 깊이를 가지는 표시 장치. - 제 8 항에 있어서,
상기 기판 상에 배치되는 멀티 버퍼층과;
상기 멀티 버퍼층 상에 배치되는 하부 버퍼층을 더 구비하며,
상기 상부 개구부는 상기 벤딩 영역에 배치되는 상기 상부 층간 절연막을 관통하며,
상기 하부 개구부는 상기 벤딩 영역에 배치되는 상기 멀티 버퍼층, 상기 하부 버퍼층, 상기 하부 게이트 절연막, 상기 하부 층간 절연막 및 상기 상부 버퍼층을 관통하며,
상기 벤딩 영역의 기판은 상하로 중첩되게 배치된 상기 상부 및 하부 개구부에 의해 노출되는 표시 장치. - 제 2 항에 있어서,
상기 제1 및 제2 소스 전극은 상기 제1 및 제2 드레인 전극과 동일 평면인 상기 상부 층간 절연막 상에, 상기 제1 및 제2 드레인 전극과 동일 재질로 이루어진 표시 장치. - 제 6 항에 있어서,
상기 발광 소자의 캐소드 전극과 접속되는 저전위 공급 라인과;
상기 저전위 공급 라인과 중첩되게 배치되는 고전위 공급 라인을 더 구비하며,
상기 저전위 공급 라인 및 상기 고전위 공급 라인 중 적어도 어느 하나는 메쉬 형태로 배치되는 표시 장치. - 제 11 항에 있어서,
상기 저전위 공급 라인은
서로 교차하는 제1 및 제2 저전위 공급 라인을 구비하며,
상기 고전위 공급 라인은
상기 제1 저전위 공급 라인과 나란한 제1 고전위 공급 라인과,
상기 제1 평탄화층 및 상기 보호막을 사이에 두고 상기 제2 저전위 공급 라인과 중첩되는 제2 고전위 공급 라인을 구비하는 표시 장치. - 제 12 항에 있어서,
상기 제2 저전위 공급 라인은 상기 화소 연결 전극과 동일 평면 상에 동일 재질로 이루어지며,
상기 제2 고전위 공급 라인은 상기 제2 소스 및 제2 드레인 전극과 동일 평면 상에 동일 재질로 이루어지는 표시 장치. - 제 6 항에 있어서,
상기 하부 개구부에 의해 노출된 상기 벤딩 영역의 상기 기판 상에, 상기 기판과 접촉하도록 배치되며 상기 제1 및 제2 소스 전극과 동일 재질로 이루어진 신호 링크를 더 구비하며,
상기 제1 및 제2 평탄화층은 상기 신호 링크를 덮도록 배치되는 표시 장치. - 제 6 항에 있어서,
상기 하부 개구부에 의해 노출된 상기 벤딩 영역의 상기 제1 평탄화층 상에 배치되며 상기 화소 연결 전극과 동일 재질로 이루어진 신호 링크를 더 구비하며,
상기 제2 평탄화층은 상기 신호 링크를 덮도록 배치되는 표시 장치. - 제 11 항에 있어서,
상기 발광 소자를 구동하는 화소 구동회로를 더 구비하며,
상기 화소 구동 회로는
상기 제2 박막트랜지스터로 이루어진 구동 트랜지스터와;
상기 구동 트랜지스터와 접속되며 상기 제1 박막트랜지스터로 이루어진 스위칭 트랜지스터를 구비하는 표시 장치. - 제 16 항에 있어서,
상기 화소 구동 회로는
상기 제2 박막트랜지스터로 이루어지며 상기 스위칭 트랜지스터와 접속된 제2 스위칭 트랜지스터와;
상기 제1 박막트랜지스터로 이루어지며 상기 구동 트랜지스터와 접속된 제3 스위칭 트랜지스터를 더 구비하는 표시 장치.
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| US12356812B2 (en) | 2020-12-15 | 2025-07-08 | Samsung Display Co., Ltd. | Display device |
| US12396329B2 (en) | 2021-03-26 | 2025-08-19 | Samsung Display Co., Ltd. | Display apparatus |
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| US12356812B2 (en) | 2020-12-15 | 2025-07-08 | Samsung Display Co., Ltd. | Display device |
| US12396329B2 (en) | 2021-03-26 | 2025-08-19 | Samsung Display Co., Ltd. | Display apparatus |
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