发明授权
- 专利标题: Liquid crystal display apparatus with luminance distribution calculating, backlight controller, and video correction to improve display contrast ratio
- 专利标题(中): 具有亮度分布计算的液晶显示装置,背光控制器和视频校正,以提高显示对比度
-
申请号: US11053029申请日: 2005-02-09
-
公开(公告)号: US07460103B2公开(公告)日: 2008-12-02
- 发明人: Akitoyo Konno , Masaya Adachi , Daisuke Kajita , Tsunenori Yamamoto , Katsumi Kondo , Tatsuki Inuzuka , Ikuo Hiyama , Yuka Utsumi
- 申请人: Akitoyo Konno , Masaya Adachi , Daisuke Kajita , Tsunenori Yamamoto , Katsumi Kondo , Tatsuki Inuzuka , Ikuo Hiyama , Yuka Utsumi
- 申请人地址: JP Mobara-shi
- 专利权人: Hitachi Displays, Ltd.
- 当前专利权人: Hitachi Displays, Ltd.
- 当前专利权人地址: JP Mobara-shi
- 代理机构: Antonelli, Terry, Stout & Kraus, LLP.
- 优先权: JP2004-031883 20040209; JP2004-366988 20041220
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
The video display apparatus has a light modulation device for forming a picture in accordance with a video signal and a lighting unit for irradiating, on the light modulation device, illumination light necessary to cause it to display the picture. In the apparatus, the lighting unit irradiates the illumination light in sequence of individual plural illumination light source partitive areas, a luminance distribution calculating unit calculates luminance distributions of video signals corresponding to the plural partitive areas to determine illumination light luminance levels of the individual partitive areas, an illumination controller controls rays of the illumination light of individual areas of the lighting unit on the basis of determination by the luminance distribution calculating unit, and a video corrector corrects the video signal inputted to the light modulation device on the basis of the determination by the luminance distribution calculating unit.
公开/授权文献
- US20050184952A1 Liquid crystal display apparatus 公开/授权日:2005-08-25
信息查询
IPC分类: