Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-01-25
2008-11-04
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S036000, C345S077000, C345S204000, C345S205000
Reexamination Certificate
active
07446742
ABSTRACT:
A light emitting device is provided where an area occupied by capacitors is decreased, luminance variations of light emitting elements caused by characteristics variations or fluctuations of the gate voltage Vgs of driving TFTs can be suppressed. Each of multiple pixels includes a light emitting element, a first transistor for determining a current value supplied thereto, a second transistor for selecting emission
on-emission thereof according to video signals, a first power supply line, and a second power supply line shared by the multiple pixels. In addition, a compensation circuit is provided each of which includes a third transistor whose gate and drain are connected to the second power supply line, and a fourth transistor for controlling the connection between a third power supply line and the gate and drain of the third transistor. The first and second transistors are connected in series between the light emitting element and the first power supply line, and the gate of the first transistor is connected to the second power supply line.
REFERENCES:
patent: 6207969 (2001-03-01), Yamazaki
patent: 6246384 (2001-06-01), Sano
patent: 6730966 (2004-05-01), Koyama
patent: 6982462 (2006-01-01), Koyama
patent: 7122969 (2006-10-01), Fukumoto et al.
patent: 7141934 (2006-11-01), Osame et al.
patent: 7173586 (2007-02-01), Osame et al.
patent: 7187350 (2007-03-01), Yoshida
patent: 7256774 (2007-08-01), Senda et al.
patent: 2001/0002703 (2001-06-01), Koyama
patent: 2002/0113760 (2002-08-01), Kimura
patent: 2002/0135312 (2002-09-01), Koyama
patent: 2002/0196389 (2002-12-01), Koyama
patent: 2003/0067424 (2003-04-01), Akimoto et al.
patent: 2003/0090447 (2003-05-01), Kimura
patent: 2003/0164685 (2003-09-01), Inukai
patent: 2003/0222589 (2003-12-01), Osame et al.
patent: 2004/0251953 (2004-12-01), Yamazaki et al.
patent: 2004/0252565 (2004-12-01), Yamazaki et al.
patent: 2004/0257353 (2004-12-01), Imamura et al.
patent: 2005/0012686 (2005-01-01), Osame et al.
patent: 2006/0033161 (2006-02-01), Koyama
Fukumoto Ryota
Noda Takeshi
Fish & Richardson P.C.
Hjerpe Richard
Semiconductor Energy Laboratory Co,. Ltd.
Shapiro Leonid
LandOfFree
Light emitting device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light emitting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light emitting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4026947