Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-03-08
2011-03-08
Nguyen, Chanh (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
Reexamination Certificate
active
07903072
ABSTRACT:
The object of the present invention is to decrease a frame size in a case where data lines are driven by using a demultiplexer. The data lines114are divided into groups each having three data lines. TFTs52and54are provided for each data line114, and the TFT52between the TFTs has a source electrode commonly connected in each group and a drain electrode connected to the data line114. In addition, the TFT54has a source electrode connected to the data line114and a drain electrode commonly connected in each group. A data signal output circuit32that outputs data signals having voltage values in accordance with gray scale levels of sub-pixels corresponding to intersections of a selected scan line and a selected data line in each group to each group. Since the selected data line114is connected to an inverting input terminal of an operational amplifier34through the TFT54, the operational amplifier34controls the voltage of the data line114to be identical to the voltage of a signal output from the data signal output circuit.
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Epson Imaging Devices Corporation
Nguyen Chanh
Oliff & Berridg,e PLC
Walthall Allison
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