发明授权
US07382382B2 Display device conversion device, display device correction circuit, display device driving device, display device, display device examination device, and display method
失效
显示装置转换装置,显示装置校正电路,显示装置驱动装置,显示装置,显示装置检查装置及显示方法
- 专利标题: Display device conversion device, display device correction circuit, display device driving device, display device, display device examination device, and display method
- 专利标题(中): 显示装置转换装置,显示装置校正电路,显示装置驱动装置,显示装置,显示装置检查装置及显示方法
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申请号: US10740795申请日: 2003-12-22
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公开(公告)号: US07382382B2公开(公告)日: 2008-06-03
- 发明人: Hiroyuki Furukawa , Yasuhiro Yoshida , Masafumi Ueno
- 申请人: Hiroyuki Furukawa , Yasuhiro Yoshida , Masafumi Ueno
- 申请人地址: JP Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JP Osaka
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2002-381486 20021227
- 主分类号: G09G5/10
- IPC分类号: G09G5/10 ; G09G3/36
摘要:
The liquid crystal display device inputs a signal, corrected by a correction circuit provided with a sigmoid inverse function generator, to a source driver. A sigmoid function which is an S-shaped function is used to approximate an input/output characteristic (applied voltage-transmittance curve) of a liquid crystal panel. The sigmoid inverse function generator converts an input signal by using an inverse function of the sigmoid function obtained by performing the approximation. A γ conversion circuit provided on the correction circuit and the sigmoid inverse function generator realize the desired γ characteristic regardless of a characteristic of the liquid crystal panel. Further, since the inverse function of the sigmoid function which is an S-shaped function is used, it is possible to provide a display device which corrects the input/output characteristic of the display panel by performing the approximation in accordance with not plural functions but a single function (without dividing the characteristic into sections).