Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure
Reexamination Certificate
2006-07-13
2009-10-27
Nguyen, Cuong Q (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
C257S099000, C257S103000, C257SE33001, C257S098000, C257S102000
Reexamination Certificate
active
07608859
ABSTRACT:
A semiconductor light-emitting device with a transparent conductive film has: a light-emitting portion formed on a semiconductor substrate, the light-emitting portion having an n-type clad layer, an active layer and a p-type clad layer; an As-based contact layer formed on the light-emitting portion, the contact layer being doped with a p-type dopant of 1×1019/cm3or more; a current spreading layer formed on the contact layer, the current spreading layer being formed of a transparent conductive film made of a metal oxide material; and a buffer layer formed between the contact layer and the p-type clad layer. The buffer layer has two or more buffer layer parts, and the adjacent buffer layer parts are different each other in material or composition.
REFERENCES:
patent: 5466950 (1995-11-01), Sugawara et al.
patent: RE35665 (1997-11-01), Lin et al.
patent: 5856682 (1999-01-01), Sasaki
patent: 6057562 (2000-05-01), Lee et al.
patent: 6329216 (2001-12-01), Matsumoto et al.
patent: 7034328 (2006-04-01), Doverspike et al.
patent: 2004/0021142 (2004-02-01), Kuo
patent: 2004/0161006 (2004-08-01), Chang et al.
patent: 2005/0050971 (2005-03-01), Horning
patent: 2005/0191179 (2005-09-01), Lai et al.
patent: 2006/0001042 (2006-01-01), Suzuki et al.
patent: 2006/0163603 (2006-07-01), Takeuchi et al.
patent: 8-83927 (1996-03-01), None
patent: 08-293623 (1996-11-01), None
patent: 08-321633 (1996-12-01), None
patent: 2001-320083 (2001-11-01), None
patent: 2002-100837 (2002-04-01), None
patent: 2002-164569 (2002-06-01), None
patent: 2004-241720 (2004-08-01), None
patent: 2004-356600 (2004-12-01), None
patent: 2005-209688 (2005-08-01), None
patent: 2005-235797 (2005-09-01), None
patent: 2005-235801 (2005-09-01), None
patent: 2005-235802 (2005-09-01), None
patent: 2005-268601 (2005-09-01), None
Arai Masahiro
Iizuka Kazuyuki
Konno Taichiroo
Foley & Lardner LLP
Hitachi Cable Ltd.
Nguyen Cuong Q
Tran Trang Q
LandOfFree
Semiconductor light-emitting device with transparent... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor light-emitting device with transparent..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor light-emitting device with transparent... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4141451