Invention Grant
- Patent Title: Pixel drive circuit for organic EL display
- Patent Title (中): 有机EL显示器的像素驱动电路
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Application No.: US12248218Application Date: 2008-10-09
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Publication No.: US08125416B2Publication Date: 2012-02-28
- Inventor: Kazuyoshi Kawabe
- Applicant: Kazuyoshi Kawabe
- Applicant Address: US VA Herndon
- Assignee: Global OLED Technology LLC
- Current Assignee: Global OLED Technology LLC
- Current Assignee Address: US VA Herndon
- Agency: Morgan, Lewis & Bockius LLP
- Priority: JP2007-269679 20071017
- Main IPC: G09G3/30
- IPC: G09G3/30 ; G09G3/12 ; G09G3/26 ; G09G5/10

Abstract:
A pixel circuit includes an organic EL element includes a storage capacitor charged with a data voltage; a first driving transistor responsive to charged voltage of the storage capacitor to supply drive current to the organic EL element; and a second driving transistor connected the storage capacitor and a predetermined power supply responsive to potential corresponding to a voltage drop in the organic EL element, and supplies charge current to the storage capacitor, circuitry for causing the second driving transistor to supply charge current to the storage capacitor from a time when the storage capacitor is charged with data voltage and the drive current from first driving transistor flows through the organic EL element. When drive current from the first driving transistor is stopped by changes in the charged voltage of storage capacitor, the drive current supplied to the organic EL element for a period corresponding to the data voltage.
Public/Granted literature
- US20090102759A1 PIXEL DRIVE CIRCUIT FOR ORGANIC EL DISPLAY Public/Granted day:2009-04-23
Information query
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