KR101577659B1 - 표시장치용 어레이 기판의 리워크 방법 및 어레이 기판 - Google Patents
표시장치용 어레이 기판의 리워크 방법 및 어레이 기판 Download PDFInfo
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- KR101577659B1 KR101577659B1 KR1020140051477A KR20140051477A KR101577659B1 KR 101577659 B1 KR101577659 B1 KR 101577659B1 KR 1020140051477 A KR1020140051477 A KR 1020140051477A KR 20140051477 A KR20140051477 A KR 20140051477A KR 101577659 B1 KR101577659 B1 KR 101577659B1
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Abstract
Description
도 2는 7개의 마스크가 사용되는 7-마스크 기판 제조 공정의 흐름도 및 그에 의하여 형성된 어레이 기판의 일부 단면도이다.
도 3은 6개의 마스크가 사용되는 6-마스크 기판 제조 공정의 흐름도 및 그에 의하여 형성된 어레이 기판의 일부 단면도이다.
도 4는 도 1의 좌측 부분을 확대한 도면으로서, 게이트 금속층으로 형성되는 공통전압 금속배선과 투명 공통전극층(Vcom ITO)의 점핑 구조를 도시한다.
도 5는 도 1의 우측 부분을 확대한 도면으로서, 소스/드레인 금속층 또는 데이터 금속층으로 형성되는 공통전압 금속배선과 투명 공통전극층(Vcom ITO)의 점핑 구조를 도시한다.
도 6은 본 발명의 일 실시예가 적용될 수 있는 어레이 기판에서 일반적인 화소 전극층 리워크 공정에서의 기판 단면도이다.
도 7은 본 발명의 일 실시예에 의한 리워크 방법의 전체 흐름도이다.
도 8은 본 발명의 일 실시예에서 사용되는 리워크 마스크의 일 예들을 도시한다.
도 9는 본 발명의 일 실시예에 의한 리워크 공정이 진행되는 과정에서의 기판 단면을 도시한다.
도 10은 본 발명의 일 실시예에 의하여 리워크된 어레이 기판의 단면도이다.
Without Rework Mast (도 6) | With Rework Mast (도 7~10) | |
검사 패널수 | 1872ea | 1557ea |
구동불량 | 64ea | 0ea |
PAD 불량 | 54ea | 1ea |
930 : 게이트 절연층(GI) 950 : 공통전압 금속배선(Data)
960: 하부 보호층 (PAS1) 970 : 공통전극 패턴(Vcom ITO)
980 : 상부 보호층 (PAS2) 990 : 점핑용 화소전극패턴 (PXL ITO)
990’ : 잔존 화소전극패턴 992, 994 : 제1, 2컨택홀
1000 : 리워크 마스크 1010 : 리워크 패턴 (차광 패턴)
1200 : 리워크용 화소전극 패턴
Claims (15)
- 표시영역의 박막 트랜지스터 영역에 게이트 금속층, 게이트 절연층(GI), 반도체층, 소스/드레인 금속층, 하부 보호층, 공통 전극층, 상부 보호층 및 화소 전극층이 순차적으로 형성되며, 비표시 영역의 공통전압 금속배선과 상기 공통 전극층을 전기적으로 연결하기 위한 점핑용 보호층 개구홀을 포함하는 어레이 기판의 리워크 방법으로서,
상기 점핑용 보호층 개구홀 영역에는 상기 하부 보호층 상부에 공통 전극패턴 및 점핑용 화소전극 패턴이 형성되며,
상기 화소 전극층의 전면 식각시, 상기 점핑용 보호층 개구홀 영역의 공통 전극패턴 및 점핑용 화소전극패턴이 식각되지 않도록 하는 리워크 마스크를 이용하여, 상기 점핑용 보호층 개구홀 영역의 상기 공통 전극패턴 및 점핑용 화소전극 패턴을 제외한 화소 전극층 전체를 제거하는 제1단계;
리워크용 화소 전극층을 전면에 형성하는 제2단계;를 포함하는 것을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 제1항에 있어서, 상기 제1단계는,
상기 기판 전면에 포토 레지스터를 도포하는 도포 단계;
상기 점핑용 보호층 개구홀 영역에 대응되는 리워크 패턴을 가지는 리워크 마스크를 기판 상에 배치한 후 광을 조사하는 노광 단계;
노광된 포토 레지스트를 현상한 후, 식각을 함으로써 상기 점핑용 보호층 개구홀 영역의 상기 공통 전극 패턴 및 점핑용 화소전극 패턴을 제외한 화소 전극층을 제거하는 식각 단계;
를 포함하는 것을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 제2항에 있어서,
상기 리워크 마스크의 상기 리워크 패턴은 상기 점핑용 보호층 개구홀 영역의 광 투과를 차단하는 차광 패턴인 것을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 제1항에 있어서,
상기 점핑용 화소전극 패턴은 상기 하부 보호층 및 상부 보호층을 일부 개구하여 형성된 제1컨택홀에 의하여 노출된 상기 공통전압 금속배선과, 상기 점핑용 보호층 개구홀 영역에서 상부 보호층을 일부 개구하여 형성된 제2컨택홀에 의하여 노출되는 상기 공통 전극 패턴 사이를 전기적으로 연결하도록 형성된 것을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 제4항에 있어서,
상기 공통전압 금속배선은 상기 게이트 금속층과 동일한 레이어에 형성되며, 상기 제1컨택홀은 상기 하부 보호층, 상부 보호층 및 게이트 절연층을 모두 개구하여 형성된 것을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 제4항에 있어서,
상기 공통전압 금속배선 상기 소스/드레인 금속층과 동일한 레이어에 형성된 것을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 제1항에 있어서,
리워크의 대상이 되는 상기 어레이 기판은 상기 하부 보호층의 패터닝을 위한 하부 보호층(PAS1) 마스크가 없는 공정에 의하여 제조된 것임을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 제1항에 있어서,
상기 하부 보호층은 제1 무기 보호층(PAS1)과 유기 보호층(PAC)을 포함하는 다층 구조인 것을 특징으로 하는 표시장치용 어레이 기판의 리워크 방법. - 표시영역의 박막 트랜지스터 영역에 게이트 금속층, 게이트 절연층(GI), 반도체층, 소스/드레인(S/D) 금속층, 하부 보호층, 공통 전극층, 상부 보호층 및 화소 전극층이 순차적으로 형성되며, 비표시 영역의 공통전압 금속배선과 상기 공통 전극층을 전기적으로 연결하기 위한 점핑용 보호층 개구홀을 포함하는 어레이 기판으로서,
상기 화소 전극층의 불량에 따른 리워크 공정에 의하여, 상기 점핑용 보호층 개구홀 영역에는 상기 하부 보호층 상부에 공통 전극 패턴, 잔존 화소전극 패턴 및 리워크용 화소 전극패턴이 순차적으로 형성된 것을 특징으로 하는 표시장치용 어레이 기판. - 제9항에 있어서,
상기 잔존 화소전극 패턴은 상기 리워크 공정시 상기 점핑용 보호층 개구홀 영역의 전극층이 식각되지 않도록 하는 리워크 마스크에 의하여 형성되는 것을 특징으로 하는 표시장치용 어레이 기판. - 제9항에 있어서,
상기 리워크용 화소전극 패턴은 상기 하부 보호층 및 상부 보호층을 일부 개구하여 형성된 제1컨택홀에 의하여 노출된 상기 공통전압 금속배선과, 상기 점핑용 보호층 개구홀 영역에서 상부 보호층을 일부 개구하여 형성된 제2컨택홀에 의하여 노출되는 상기 공통전극 패턴 및 상기 잔존 화소전극 패턴 사이를 전기적으로 연결하도록 형성된 것을 특징으로 하는 표시장치용 어레이 기판. - 제11항에 있어서,
상기 공통전압 금속배선은 상기 게이트 금속층과 동일한 레이어에 형성되며, 상기 제1컨택홀은 상기 하부 보호층, 상부 보호층 및 게이트 절연층을 모두 개구하여 형성된 것을 특징으로 하는 표시장치용 어레이 기판. - 제11항에 있어서,
상기 공통전압 금속배선은 상기 소스/드레인 금속층과 동일한 레이어에 형성된 것을 특징으로 하는 표시장치용 어레이 기판. - 제9항에 있어서,
리워크의 대상이 되는 상기 어레이 기판은 상기 하부 보호층의 패터닝을 위한 마스크가 없는 공정에 의하여 제조된 것임을 특징으로 하는 표시장치용 어레이 기판. - 제9항에 있어서,
상기 하부 보호층은 제1 무기 보호층(PAS1)과 유기 보호층(PAC)을 포함하는 다층 구조인 것을 특징으로 하는 표시장치용 어레이 기판.
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US14/341,599 US9385146B2 (en) | 2014-04-29 | 2014-07-25 | Rework method of array substrate for display device and array substrate formed by the method |
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CN104571765B (zh) * | 2015-01-09 | 2017-08-29 | 京东方科技集团股份有限公司 | 一种内嵌式触摸屏及显示装置 |
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CN106054472B (zh) * | 2016-08-22 | 2019-09-10 | 武汉华星光电技术有限公司 | 低温多晶硅薄膜晶体管阵列基板及其制作方法、液晶面板 |
CN106206673B (zh) * | 2016-09-09 | 2019-03-12 | 深圳市华星光电技术有限公司 | Amoled显示装置 |
CN109585343B (zh) * | 2018-11-30 | 2021-04-30 | 京东方科技集团股份有限公司 | 一种显示面板中封装膜层的剥离方法 |
CN109491163A (zh) * | 2018-12-12 | 2019-03-19 | 惠科股份有限公司 | 阵列基板修复工艺、阵列基板以及显示面板 |
CN110471223B (zh) * | 2019-08-15 | 2022-03-11 | 厦门天马微电子有限公司 | 显示面板和显示装置 |
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