发明授权
- 专利标题: Display apparatus and display method thereof
- 专利标题(中): 显示装置及其显示方法
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申请号: US854640申请日: 1997-05-12
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公开(公告)号: US6151000A公开(公告)日: 2000-11-21
- 发明人: Hiroshi Ohtaka , Masaji Ishigaki , Yasuji Noguchi , Yuichiro Kimura , Ken Kumakura
- 申请人: Hiroshi Ohtaka , Masaji Ishigaki , Yasuji Noguchi , Yuichiro Kimura , Ken Kumakura
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX8-117691 19960513
- 主分类号: G09G3/20
- IPC分类号: G09G3/20 ; G09G3/288 ; G09G3/28 ; H04N5/04 ; H04N9/44
摘要:
A display apparatus and display method are provided for a display panel having pixels arranged in a matrix form for displaying an image on a effective display area. Horizontal electrodes and vertical electrodes in the display panel are scanned for selectively illuminating said pixels by using a time sharing drive method in which one field period is divided into plural sub-fields weighted according to a sustaining period. As a result, an effective display area is divided into plural areas, no scanning for selecting a light emitting pixel is executed in a non-display area, and the number of sub-fields is increased in an area in which display in multiple gradations is required in a display area to obtain sufficient gradation. Instead of increasing the number of the sub-fields, the total sustaining period per one field is increased to obtain sufficient brightness. According to a feature of the invention, another area is provided in which the number of sub-fields is limited to the required minimum in which display in multiple gradations is not required. According to other feature of the invention, another area having few sub-fields is prepared instead of providing the non-display area.