Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-08-09
2005-08-09
Chow, Dennis-Doon (Department: 2675)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S098000, C345S212000
Reexamination Certificate
active
06927753
ABSTRACT:
Power consumption is reduced in a driving circuit of a display device capable of handling a low voltage amplitude input signal by employing level shifters that utilize a differential amplifier. The driving circuit is divided into a plurality of units and each unit is provided with a constant current source. In addition to a usual scanning circuit, there is provided a sub-scanning circuit for controlling ON/OFF of the constant current source arranged in each unit. The sub-scanning circuit turns ON only the constant current sources in the unit that is being scanned. A current thus can be supplied efficiently.
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Koyama Jun
Tanada Yoshifumi
Chow Dennis-Doon
Jorgensen Leland R.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
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