Light-emitting device

Details Light-emitting device Light-emitting device

2005-06-21

2005-06-21

Wong, Don (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C315S169300, C315S169400, C315S159000, C345S092000, C345S076000

Reexamination Certificate

active

06909240

ABSTRACT:
A light-emitting device which realizes a high aperture ratio and in which the quality of image is little affected by the variation in the characteristics of TFTs. A large holding capacitor Cs is not provided in the pixel portion but, instead, the channel length and the channel width of the driving TFTs are increased, and the channel capacitance is utilized as Cs. The channel length is selected to be very larger than the channel width to improve current characteristics in the saturated region, and a high VGSis applied to the driving TFTs to obtain a desired drain current. Therefore, the drain currents of the driving TFTs are little affected by the variation in the threshold voltage. In laying out the pixels, further, wiring is arranged under the partitioning wall and the driving TFTs are arranged under the wiring in order to avoid a decrease in the aperture ratio despite of an increase in the size of the driving TFT. In the case of the 3-transistor pixels, the switching TFT and the erasing TFT are linearly arranged to further increase the aperture ratio.

REFERENCES:
patent: 5650636 (1997-07-01), Takemura et al.
patent: 5814834 (1998-09-01), Yamazaki et al.
patent: 5895935 (1999-04-01), Yamazaki et al.
patent: 6023074 (2000-02-01), Zhang
patent: 6166397 (2000-12-01), Yamazaki et al.
patent: 6246180 (2001-06-01), Nishigaki
patent: 6259117 (2001-07-01), Takemura et al.
patent: 6274887 (2001-08-01), Yamazaki et al.
patent: 6277679 (2001-08-01), Ohtani
patent: 6297518 (2001-10-01), Zhang
patent: 6384427 (2002-05-01), Yamazaki et al.
patent: 6445005 (2002-09-01), Yamazaki et al.
patent: 6477843 (2002-11-01), Schroeder et al.
patent: 6528950 (2003-03-01), Kimura
patent: 6628349 (2003-09-01), Takei et al.
patent: 6670637 (2003-12-01), Yamazaki et al.
patent: 6690033 (2004-02-01), Yamazaki et al.
patent: 6714178 (2004-03-01), Koyama et al.
patent: 6777887 (2004-08-01), Koyama
patent: 2001/0025959 (2001-10-01), Yamazaki et al.
patent: 2002/0001886 (2002-01-01), Ohtani
patent: 2002/0023426 (2002-02-01), Schroeder et al.
patent: 2002/0047568 (2002-04-01), Koyama
patent: 2002/0134979 (2002-09-01), Yamazaki et al.
patent: 2003/0089905 (2003-05-01), Udagawa et al.
patent: 2003/0119230 (2003-06-01), Chida et al.
patent: 2004/0016927 (2004-01-01), Takei et al.
patent: 2004/0065902 (2004-04-01), Yamazaki et al.
patent: 2004/0113873 (2004-06-01), Shirasaki et al.
patent: 2004/0135146 (2004-07-01), Yamazaki et al.
patent: 2004/0135181 (2004-07-01), Yamazaki et al.
patent: 1 058 311 (2000-12-01), None
patent: 1 087336 (2001-03-01), None
patent: 1 093 166 (2001-04-01), None
patent: 1 096 303 (2001-05-01), None
patent: 1 128 439 (2001-08-01), None
patent: 1 310 997 (2003-05-01), None
patent: 62-092370 (1987-04-01), None
patent: 8-234683 (1996-09-01), None
patent: 2000-221942 (2000-08-01), None
patent: 2000-223715 (2000-08-01), None
patent: 2001-051622 (2001-02-01), None
patent: 2001-109399 (2001-04-01), None
patent: 2001-189192 (2001-07-01), None
patent: 2001-195015 (2001-07-01), None
patent: 2001-196594 (2001-07-01), None
patent: 2001-318623 (2001-11-01), None
patent: 2001-318628 (2001-11-01), None
patent: 2002-108285 (2002-04-01), None
patent: 2003-195810 (2003-07-01), None
patent: 2003-208110 (2003-07-01), None
patent: WO03-058328 (2003-07-01), None

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-3489451