Pixel circuit and display apparatus

Details Pixel circuit and display apparatus Pixel circuit and display apparatus

2006-09-26

2010-02-09

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S206000

Reexamination Certificate

active

07659872

ABSTRACT:
Disclosed herein is a pixel circuit that includes a correcting section configured to correct the input voltage sampled in the pixel capacitance in order to cancel out the dependency of the output current on the carrier mobility. In the pixel circuit, the correcting section operates depending on the control signal supplied from the scanning line to extract the output current from the drive transistor and introduce the extracted output current into a capacitance of the light-emitting device and the pixel capacitance, thereby correcting the input voltage. The pixel circuit further includes an additional capacitance added to the capacitance of the light-emitting device. In the pixel circuit, a portion of the output current extracted from the drive transistor flows into the additional capacitance to give a time margin to operation of the correcting section.

REFERENCES:
patent: 6356029 (2002-03-01), Hunter
patent: 7042426 (2006-05-01), Shin
patent: 7535442 (2009-05-01), Yamashita et al.
patent: 2005/0269959 (2005-12-01), Uchino et al.
patent: 2006/0061560 (2006-03-01), Yamashita et al.
patent: 1 496 495 (2005-01-01), None
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patent: 2003-271095 (2003-09-01), None
patent: 2004-029791 (2004-01-01), None
patent: 2004-093682 (2004-03-01), None
patent: 2004-133240 (2004-04-01), None
EP Search Report, dated Feb. 20, 2007.

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