Invention Grant
- Patent Title: Drive circuit and drive method of light emitting display apparatus
- Patent Title (中): 发光显示装置的驱动电路及驱动方法
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Application No.: US12028588Application Date: 2008-02-08
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Publication No.: US08009157B2Publication Date: 2011-08-30
- Inventor: Hisae Shimizu , Katsumi Abe
- Applicant: Hisae Shimizu , Katsumi Abe
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-061871 20070312
- Main IPC: G06F3/038
- IPC: G06F3/038

Abstract:
A drive circuit for a light emitting display apparatus including a pixel circuit having a light emitting device for emitting a light having brightness determined based on supplied current and a drive transistor for supplying the current to the light emitting device, comprises a threshold value correction circuit converting a second signal including a threshold voltage of the drive transistor and a data voltage, the second signal being output from the drive transistor when a first signal including the data voltage is input into the control electrode of the drive transistor, into a third signal including the threshold voltage of an inverted polarity and the data voltage or a voltage corresponding to the data voltage, to output the converted third signal to the pixel circuit. The pixel circuit includes a switch for supplying the third signal to the control electrode of the drive transistor.
Public/Granted literature
- US20080225023A1 DRIVE CIRCUIT AND DRIVE METHOD OF LIGHT EMITTING DISPLAY APPARATUS Public/Granted day:2008-09-18
Information query
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