Invention Grant
- Patent Title: Liquid crystal display having pixel including multiple subpixels
- Patent Title (中): 具有包括多个子像素的像素的液晶显示器
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Application No.: US12310403Application Date: 2007-08-13
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Publication No.: US08208081B2Publication Date: 2012-06-26
- Inventor: Masae Kitayama , Fumikazu Shimoshikiryoh
- Applicant: Masae Kitayama , Fumikazu Shimoshikiryoh
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2006-228475 20060824
- International Application: PCT/JP2007/065833 WO 20070813
- International Announcement: WO2008/023602 WO 20080228
- Main IPC: G02F1/1343
- IPC: G02F1/1343 ; G02F1/133 ; G02F1/141

Abstract:
Each pixel includes first and second subpixels and two switching elements provided for those subpixels. Each subpixel includes a liquid crystal capacitor and a storage capacitor. The storage capacitor counter electrodes of the first and second subpixels are electrically independent. A storage capacitor counter voltage applied to each storage capacitor counter electrode by way of its associated storage capacitor line has a first period (A) with a first waveform during one vertical scanning period. The first waveform oscillates between multiple voltage levels in a first cycle time (PA) that is an integral number of times (and at least four times) as long as one horizontal scanning period (H). Each of the voltage levels has a flat portion with a duration TP. While the two switching elements are ON, a display signal voltage is applied to the respective subpixel electrodes and respective storage capacitor electrodes of the first and second subpixels. After the two switching elements have been turned OFF, voltages at the storage capacitor counter electrodes of the first and second subpixels change. And if an interval between a point in time when the two switching elements in ON state have just been turned OFF and a point in time when the storage capacitor counter voltage changes for the first time is βH, TP/4≦β
Public/Granted literature
- US20090268110A1 LIQUID CRYSTAL DISPLAY Public/Granted day:2009-10-29
Information query
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