KR102621592B1 - 디스플레이 장치 및 이의 제조 방법 - Google Patents
디스플레이 장치 및 이의 제조 방법 Download PDFInfo
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- KR102621592B1 KR102621592B1 KR1020180098765A KR20180098765A KR102621592B1 KR 102621592 B1 KR102621592 B1 KR 102621592B1 KR 1020180098765 A KR1020180098765 A KR 1020180098765A KR 20180098765 A KR20180098765 A KR 20180098765A KR 102621592 B1 KR102621592 B1 KR 102621592B1
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- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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Abstract
Description
도 2는 도 1의 디스플레이 장치의 디스플레이 기판과 발광소자의 일 예를 개략적으로 도시한 단면도이다.
도 3은 도 1의 디스플레이 장치의 회절격자층의 일 예를 개략적으로 도시한 사시도이다.
도 4는 도 1의 디스플레이 장치의 회절 격자층에 의한 발광영역 확대를 설명하기 위한 모식도이다.
도 5는 도 1의 디스플레이 장치를 포함하는 헤드 마운트 디스플레이 장치의 일 예를 개략적으로 도시한 단면도이다.
도 6 내지 도 9는 도 1의 디스플레이 장치의 제조 방법을 개략적으로 도시한 단면도들이다.
Claims (20)
- 디스플레이 기판;
상기 디스플레이 기판 상에 배치된 발광소자;
상기 발광소자 상에 배치되고, 상기 디스플레이 기판과 합착하는 봉지기판; 및
상기 봉지기판의 상면에 배치된 회절격자층;을 포함하고,
상기 회절격자층은 서로 일정간격 이격된 복수의 회절 패턴들을 포함하며,
상기 복수의 회절 패턴들 각각은 서로 다른 재질을 포함하는 하층과 상층의 적층구조를 갖고, 상기 하층은 ITO, IZO 및 ITZO 중 적어도 어느 하나를 포함하는, 디스플레이 장치. - 디스플레이 기판;
상기 디스플레이 기판 상에 배치된 발광소자;
상기 발광소자 상에 배치되고, 상기 디스플레이 기판과 합착하는 봉지기판; 및
상기 봉지기판의 상면에 배치된 회절격자층;을 포함하고,
상기 회절격자층은 서로 일정간격 이격된 복수의 회절 패턴들을 포함하며,
상기 복수의 회절 패턴들 각각은 서로 다른 재질을 포함하는 하층과 상층의 적층구조를 갖고, 상기 상층은 상기 봉지기판과 동일한 성분을 포함하는 디스플레이 장치. - 제1항에 있어서,
상기 복수의 회절 패턴들은 서로 수직한 방향으로 교차하는 제1방향과 제2방향을 따라 동일한 주기를 가지고 배치되는 디스플레이 장치. - 제1항에 있어서,
상기 상층은 상기 하층이 포함하는 물질과 상이한 무기재질을 포함하는 디스플레이 장치. - 삭제
- 디스플레이 기판;
상기 디스플레이 기판 상에 배치된 발광소자;
상기 발광소자 상에 배치되고, 상기 디스플레이 기판과 합착하는 봉지기판; 및
상기 봉지기판의 상면에 배치된 회절격자층;을 포함하고,
상기 회절격자층은 서로 일정간격 이격된 복수의 회절 패턴들을 포함하며,
상기 복수의 회절 패턴들 각각은 서로 다른 재질을 포함하는 하층과 상층의 적층구조를 갖고, 상기 상층은 실리콘옥사이드, 실리콘나이트라이드 및 실리콘옥시나이트라이드 중 적어도 어느 하나를 포함하는 디스플레이 장치. - 제1항에 있어서,
상기 발광소자에서 발생된 광은 상기 회절격자층을 통과하며 발광영역이 확대되는 디스플레이 장치. - 제1항에 있어서,
상기 복수의 회절 패턴들은 상기 발광소자로부터 출사되는 광을 회절시켜 기준 발광 패턴 및 복수의 복제 발광 패턴들을 생성하는 디스플레이 장치. - 제1항에 있어서,
상기 디스플레이 기판은 상기 발광소자와 전기적으로 연결된 박막 트랜지스터를 포함하는 디스플레이 장치. - 제9항에 있어서,
상기 발광소자는 상기 박막 트랜지스터와 전기적으로 연결된 화소전극, 상기 화소전극 상의 대향전극, 및 상기 화소전극과 상기 대향전극 사이에 개재되며 발광층을 포함하는 중간층을 갖는 유기발광소자인 디스플레이 장치. - 디스플레이 기판 상에 발광소자를 형성하는 단계;
상기 발광소자 상에 봉지기판을 위치시키고, 상기 디스플레이 기판과 상기 봉지기판을 합착하는 단계; 및
상기 봉지기판의 상면에 회절격자층을 형성하는 단계;를 포함하고,
상기 회절격자층을 형성하는 단계는,
상기 봉지기판의 상면 전체에 서로 다른 재질로 이루어진 제1층과 제2층을 순차적으로 형성하는 단계;
개구를 포함하는 감광막을 사용하여 상기 제2층을 패터닝하여 상기 회절격자층의 상층을 형성하는 단계; 및
패터닝된 상기 제2층을 마스크로 사용하여 상기 제1층을 패터닝하여 상기 회절격자층의 하층을 형성하는 단계;를 포함하는 디스플레이 장치의 제조 방법. - 제11항에 있어서,
상기 상층과 상기 하층은 상기 회절격자층의 회절 패턴들을 이루고, 상기 회절 패턴들은 서로 일정간격 이격되도록 형성되는 디스플레이 장치의 제조 방법. - 제11항에 있어서,
상기 제1층과 상기 제2층은 서로 다른 무기재질을 포함하는 디스플레이 장치의 제조 방법. - 제13항에 있어서,
상기 제2층은 상기 봉지기판과 동일한 성분을 포함하는 디스플레이 장치의 제조 방법. - 제13항에 있어서,
상기 제1층은 ITO, IZO 및 ITZO 중 적어도 어느 하나를 포함하는 디스플레이 장치의 제조 방법. - 제13항에 있어서,
상기 제2층은 실리콘옥사이드, 실리콘나이트라이드 및 실리콘옥시나이트라이드 중 적어도 어느 하나를 포함하는 디스플레이 장치의 제조 방법. - 제11항에 있어서,
상기 디스플레이 기판은 상기 발광소자와 전기적으로 연결된 박막 트랜지스터를 포함하고,
상기 발광소자는 상기 박막 트랜지스터와 전기적으로 연결된 화소전극, 상기 화소전극 상의 대향전극, 및 상기 화소전극과 상기 대향전극 사이에 개재되며 발광층을 포함하는 중간층을 갖는 유기발광소자인 디스플레이 장치의 제조 방법. - 제17항에 있어서,
상기 대향전극과 상기 봉지기판 사이의 공간에는 충전재가 형성되는 디스플레이 장치의 제조 방법. - 제11항에 있어서,
상기 제2층은 건식 식각에 의해 패터닝되고, 상기 제1층은 습식 식각에 의해 패터닝되는 디스플레이 장치의 제조 방법. - 제19항에 있어서,
상기 제2층의 식각시, 상기 제1층은 식각되지 않는 디스플레이 장치의 제조 방법.
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