Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-01-18
2009-12-15
Nguyen, Chanh (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S089000
Reexamination Certificate
active
07633478
ABSTRACT:
A power supply circuit including a high-potential-side voltage generation circuit and a low-potential-side voltage generation circuit which respectively generate a high-potential-side voltage and a low-potential-side voltage to be supplied to a common electrode, and alternately supplying the high-potential-side voltage and the low-potential-side voltage to the common electrode as a common electrode voltage so that polarity of the common electrode voltage is the same in consecutive first and second horizontal scan periods. When a precharge voltage of data lines in a precharge period in the first horizontal scan period is higher than the average voltage of the data lines set after the precharge period, the power supply circuit controls the supply capability of the common electrode voltage in a precharge period of the data lines in the second horizontal scan period.
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Harness & Dickey & Pierce P.L.C.
Nguyen Chanh
Seiko Epson Corporation
Snyder Adam J
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