Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2003-10-20
2008-10-07
Lefkowitz, Sumati (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
Reexamination Certificate
active
07432891
ABSTRACT:
A driving circuit for an image point of an image screen which has an organic light-emitting diode includes a capacitor, a feedback coupling, a first thin film transistor as a current-driving transistor for the diode, a second transistor which is connected by a current-conducting electrode with a gate of the first transistor and by a second current-conducting electrode with a data conductor and by its gate electrode with a scanning signal conductor, a third thin film transistor which during driving its gate through a driving conductor taps a diode driving current and an output of the first transistor and supplies a current measuring- and voltage regulating circuit, the current measuring- and voltage regulating circuit providing to the data conductor a voltage signal which is dependent on a current measuring result and a voltage comparison, so that the diode during driving of the gate of the third transistor due to its non-linear switching characteristic acts as a switch for a current deviation in the current measuring- and voltage regulating circuit.
REFERENCES:
patent: 5451978 (1995-09-01), Harju
patent: 6356029 (2002-03-01), Hunter
patent: 6466188 (2002-10-01), Cato
patent: 2002/0030647 (2002-03-01), Hack et al.
patent: 2002/0101172 (2002-08-01), Bu
patent: 2002/0101395 (2002-08-01), Inukai
patent: 2002/0140659 (2002-10-01), Mikami et al.
patent: 43 15 819 (1993-11-01), None
patent: 100 09 204 (2001-08-01), None
patent: 2002091377 (2002-03-01), None
Akira Yumoto: “Pixel-Driving Methods for Large-Sized Poly-Si . . . ” Asia Display/IDW' 01, pp. 1395-1398, 2001.
Kumar Srilakshmi K
Lefkowitz Sumati
Striker Michael J.
Universitaet Stuttgart
LandOfFree
Active matrix drive circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active matrix drive circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active matrix drive circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4007646