Light emitting device

Details Light emitting device Light emitting device

2011-03-08

2011-03-08

Epps, Georgia Y (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Solid state light source

C250S205000, C345S082000, C257S088000

Reexamination Certificate

active

07902533

ABSTRACT:
The invention has a monitoring portion which detects change of ambient temperature and degradation with time, provided with a plurality of monitoring pixels and a monitoring line. Each of the plurality of monitoring pixels has a light emitting element for monitoring, a constant current source, a switch, and a detecting circuit, and one electrode of the light emitting element for monitoring is connected to the monitoring line through the switch. The detecting circuit controls on and off of the switch, and specifically in the case where both electrodes of the light emitting element for monitoring are short-circuited, the switch is turned off. The invention having the aforementioned configuration generates no potential change of the power supply line of the pixel portion when both electrodes of a light emitting element for monitoring are short-circuited.

REFERENCES:
patent: 5594463 (1997-01-01), Sakamoto
patent: 6486607 (2002-11-01), Yeuan
patent: 6528951 (2003-03-01), Yamazaki
patent: 6720198 (2004-04-01), Yamagata
patent: 6828950 (2004-12-01), Koyama
patent: 6853370 (2005-02-01), Numao
patent: 6873116 (2005-03-01), Kimura
patent: 7042164 (2006-05-01), Yazawa
patent: 7180485 (2007-02-01), Kimura
patent: 7221338 (2007-05-01), Yamazaki
patent: 7245297 (2007-07-01), Kimura et al.
patent: 7442950 (2008-10-01), Osame et al.
patent: 2001/0030511 (2001-10-01), Yamazaki
patent: 2001/0033252 (2001-10-01), Yamazaki
patent: 2002/0089496 (2002-07-01), Numao
patent: 2002/0101395 (2002-08-01), Inukai
patent: 2003/0209989 (2003-11-01), Anzai
patent: 2004/0100463 (2004-05-01), Miyagawa
patent: 2004/0178726 (2004-09-01), Yamagata
patent: 2005/0012731 (2005-01-01), Yamazaki
patent: 2005/0017963 (2005-01-01), Yamazaki
patent: 2005/0017964 (2005-01-01), Yamazaki
patent: 2005/0225250 (2005-10-01), Anzai
patent: 2006/0007218 (2006-01-01), Miyake
patent: 2006/0022206 (2006-02-01), Hayakawa
patent: 2006/0033452 (2006-02-01), Yamazaki
patent: 2006/0038501 (2006-02-01), Koyama
patent: 2006/0038804 (2006-02-01), Hayakawa
patent: 2006/0102910 (2006-05-01), Yamazaki et al.
patent: 2006/0109216 (2006-05-01), Iwabuchi
patent: 2006/0139254 (2006-06-01), Hayakawa
patent: 1318818 (2001-10-01), None
patent: 1453757 (2003-11-01), None
patent: 1 148 466 (2001-10-01), None
patent: 02-287492 (1990-11-01), None
patent: 2000-227776 (2000-08-01), None
patent: 2002-278498 (2002-09-01), None
patent: 2002-318546 (2002-10-01), None
patent: 2002-333861 (2002-11-01), None
patent: 2003-317944 (2003-11-01), None
patent: 2003-323159 (2003-11-01), None
patent: 2004-170943 (2004-06-01), None
patent: 4128875 (2008-05-01), None
patent: WO-2004/040541 (2004-05-01), None
patent: WO-2006/011666 (2006-02-01), None
patent: WO-2006/016706 (2006-02-01), None
Office Action (Chinese Patent Application No. 200510129551.9; CN8393) dated Feb. 15, 2008, full translation.

Affiliated with

Also associated with

Rating

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.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2661713