Data driver circuit for use with an lcd display

Details Data driver circuit for use with an lcd display Data driver circuit for use with an lcd display

G - Physics

09

G

G09G 3/36 (2006.01)

Patent

CA 2150454

A data driver circuit (25) and system driving scheme that can be integrated directly onto a display substrate (14) to induce the cost of the peripheral integrated circuits and the hybrid assembly needed by unscanned active matrix liquid crystal displays to connect them to the array. A demultiplexer circuit (102) is deposited on the display (14) for demultiplexing a group of Y columns of multiplexed video data input signals to X groups of Y pixel capacitors (94, 96...100) that are also deposited on the substrate (14) in Z rows. In addition, a data driver circuit (12) provides voltage signals to precharge the pixel capacitors (94, 96...100) to a first voltage level in a first time period such that video data input signals coupled thereto in a multiplexed fashion during a second time period cause the pixel capacitors (94, 96...100) to store to a second predetermined voltage level to provide a video display as the rows of pixels are sequentially scanned.

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