Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-04-10
2010-11-09
Lefkowitz, Sumati (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S060000, C345S055000, C315S169100
Reexamination Certificate
active
07830341
ABSTRACT:
An organic electroluminescence (EL) display device wherein pixel defects are reduced with a minimum increase in the number of thin film transistors used is to be provided. The organic EL display device has: a plurality of power supply lines each for supplying a current to one or another of pixel circuits disposed in an area surrounded by image signal lines and scanning lines; a plurality of split organic EL elements connected in parallel, each connected to one or another of the pixel circuits; a first thin film transistor of which the gate electrode is connected to the signal lines, the source electrode is connected in parallel to the anodes of the plurality of split organic EL elements, and the drain is connected to the power supply lines, and which controls the total amperage to be supplied during the light emitting period to the plurality of split organic EL elements with signals captured from the signal lines; and a plurality of second thin film transistors each disposed between the first thin film transistor and one or another of the split organic EL elements to control the current supplied to each of the split organic EL elements from the first thin film transistor.
REFERENCES:
patent: 6771028 (2004-08-01), Winters
patent: 2003/0067424 (2003-04-01), Akimoto et al.
patent: 2003-122301 (2003-04-01), None
Furuie Masamitsu
Ookawara Takeshi
Oooka Hiroshi
Sakamoto Hirotsugu
Antonelli, Terry Stout & Kraus, LLP.
Hicks Charles
Hitachi Displays Ltd.
Lefkowitz Sumati
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