Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2006-06-27
2006-06-27
Osorio, Ricardo (Department: 2673)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S089000, C345S692000
Reexamination Certificate
active
07068292
ABSTRACT:
A signal driver IC (or a display driver circuit in a broad sense) includes a signal electrode driver circuit which drives a signal electrode by using grayscale data. The signal electrode driver circuit has a precharge circuit, a DAC circuit, and a drive voltage adjusting circuit. The precharge circuit sets an output electrode connected to the signal electrode at a precharge voltage in a first stage which is a first period within one horizontal scanning period. In a second stage subsequent to the first stage, the DAC circuit sets the output electrode at a reference voltage based on the grayscale data. In a third stage subsequent to the second stage, the drive voltage adjusting circuit adjusts the voltage of the output electrode by using the grayscale data.
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Osorio Ricardo
Seiko Epson Corporation
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