KR102480481B1 - 표시 장치 및 그 구동 방법 - Google Patents
표시 장치 및 그 구동 방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 한 실시예에 따른 제1 주사 구동부를 설명하기 위한 도면이다.
도 3은 도 2의 제1 주사 구동부의 예시적인 타이밍 다이어그램이다.
도 4는 본 발명의 한 실시예에 따른 제2 주사 구동부를 설명하기 위한 도면이다.
도 5는 도 4의 제2 주사 구동부의 예시적인 타이밍 다이어그램이다.
도 6은 본 발명의 한 실시예에 따른 화소를 설명하기 위한 도면이다.
도 7은 도 6의 화소를 구동하기 위한 예시적인 타이밍 다이어그램이다.
도 8은 도 6의 화소에 존재하는 기생 커패시턴스를 설명하기 위한 도면이다.
도 9는 도 8의 기생 커패시턴스의 크기 변화를 설명하기 위한 도면이다.
도 10은 기생 커패시턴스로 인한 제1 및 제2 스캔 신호의 위상 변동을 설명하기 위한 도면이다.
도 11은 본 발명의 제1 실시예에 따른 표시 장치의 제1 스캔 신호를 설명하기 위한 도면이다.
도 12는 도 11의 제1 및 제2 스캔 신호의 위상 변동 시를 설명하기 위한 도면이다.
도 13은 본 발명의 제2 실시예에 따른 표시 장치의 제1 스캔 신호를 설명하기 위한 도면이다.
12: 제2 주사 구동부
13: 데이터 구동부
14: 발광 제어 구동부
15: 타이밍 제어부
16: 화소부
Claims (16)
- 구동 트랜지스터, 데이터 라인과 상기 구동 트랜지스터의 일단 사이에 연결되는 P형 트랜지스터, 및 상기 구동 트랜지스터의 타단과 상기 구동 트랜지스터의 게이트 전극 사이에 연결되는 N형 트랜지스터를 포함하는 화소 회로;
상기 N형 트랜지스터에 제1 스캔 신호를 공급하는 제1 주사 구동부; 및
상기 P형 트랜지스터에 제2 스캔 신호를 공급하는 제2 주사 구동부를 포함하고,
상기 N형 트랜지스터를 턴-온시키는 상기 제1 스캔 신호의 하이 레벨 구간의 폭은 상기 P형 트랜지스터를 턴-온시키는 상기 제2 스캔 신호의 로우 레벨 구간의 폭보다 넓고, 상기 제2 스캔 신호의 로우 레벨 구간은 상기 제1 스캔 신호의 하이 레벨 구간과 중첩되는,
표시 장치. - 제1 항에 있어서,
상기 제1 스캔 신호의 상승 천이 시점은 상기 제2 스캔 신호의 하강 천이 시점과 일치하는,
표시 장치. - 제2 항에 있어서,
상기 제1 스캔 신호의 하강 천이 시점은 상기 제2 스캔 신호의 상승 천이 시점보다 후속하는,
표시 장치. - 삭제
- 제1 항에 있어서,
제1 구동 클록 신호 및 제2 구동 클록 신호를 각각 상기 제1 주사 구동부 및 상기 제2 주사 구동부에 공급하는 타이밍 제어부를 더 포함하고,
상기 제1 주사 구동부는 상기 제1 구동 클록 신호의 일부를 상기 제1 스캔 신호로 공급하고,
상기 제2 주사 구동부는 상기 제2 구동 클록 신호의 일부를 상기 제2 스캔 신호로 공급하는,
표시 장치. - 제5 항에 있어서,
상기 타이밍 제어부는 제1 제어 클록 신호를 상기 제1 주사 구동부에 더 공급하고,
상기 제1 제어 클록 신호의 주기는 상기 제1 구동 클록 신호의 일부의 하이 레벨 구간의 폭의 허용 범위를 결정하는,
표시 장치. - 제6 항에 있어서,
상기 제1 제어 클록 신호의 하강 천이 시점은 상기 허용 범위의 최대치인,
표시 장치. - 제5 항에 있어서,
상기 타이밍 제어부는 각 프레임마다 독립적으로 하이 레벨 구간의 폭이 결정된 상기 제1 구동 클록 신호를 공급하는,
표시 장치. - 제8 항에 있어서,
상기 타이밍 제어부는 한 프레임 중에서 상기 데이터 라인에 인가되는 최대 데이터 전압에 대응하여 상기 제1 구동 클록 신호의 하이 레벨 구간의 폭을 결정하는,
표시 장치. - 제9 항에 있어서,
상기 타이밍 제어부는 상기 최대 데이터 전압이 높을수록 상기 제1 구동 클록 신호의 하이 레벨 구간의 폭을 증가시키는,
표시 장치. - 구동 트랜지스터, 데이터 라인과 상기 구동 트랜지스터의 일단 사이에 연결되는 P형 트랜지스터, 및 상기 구동 트랜지스터의 타단과 상기 구동 트랜지스터의 게이트 전극 사이에 연결되는 N형 트랜지스터를 포함하는 화소 회로를 포함하는 표시 장치의 구동 방법에 있어서,
상기 데이터 라인에 특정 전압을 인가하는 단계;
상기 N형 트랜지스터의 게이트 전극에 하이 레벨의 제1 스캔 신호를 인가하는 단계; 및
상기 P형 트랜지스터의 게이트 전극에 로우 레벨의 제2 스캔 신호를 인가하는 단계를 포함하고,
상기 N형 트랜지스터를 턴-온시키는 상기 제1 스캔 신호의 하이 레벨 구간의 폭은 상기 P형 트랜지스터를 턴-온시키는 상기 제2 스캔 신호의 로우 레벨 구간의 폭보다 넓고, 상기 제2 스캔 신호의 로우 레벨 구간은 상기 제1 스캔 신호의 하이 레벨 구간과 중첩되는,
표시 장치의 구동 방법. - 제11 항에 있어서,
상기 제1 스캔 신호의 상승 천이 시점은 상기 제2 스캔 신호의 하강 천이 시점과 일치하는,
표시 장치의 구동 방법. - 제12 항에 있어서,
상기 제1 스캔 신호의 하강 천이 시점은 상기 제2 스캔 신호의 상승 천이 시점보다 후속하는,
표시 장치의 구동 방법. - 제11 항에 있어서,
상기 제1 스캔 신호의 하이 레벨 구간의 폭은 각 프레임마다 독립적으로 결정되는 단계를 더 포함하는
표시 장치의 구동 방법. - 제14 항에 있어서,
상기 제1 스캔 신호의 하이 레벨 구간의 폭은 한 프레임 중에서 상기 데이터 라인에 인가되는 최대 데이터 전압에 대응하여 결정되는,
표시 장치의 구동 방법. - 제15 항에 있어서,
상기 최대 데이터 전압이 높을수록 상기 제1 스캔 신호의 하이 레벨 구간의 폭이 증가되는,
표시 장치의 구동 방법.
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