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US 5,648,793 AGranted
Driving system for active matrix liquid crystal display
AssigneeIndustrial Technology Research Institute
InventorYen-Chen Chen
Life of this patent
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Abstract
A driving system for matrix liquid crystal display in which the picture elements in adjacent rows and/or adjacent columns are applied with signals of opposite polarities. These polarities are reversed for every other field of a picture frame. Such a system reduces flicker and cross-talk. The system is implemented by interleaving the precharging and charging signals of adjacent picture elements.
Claims9
An active matrix display system using picture elements (pixel) arranged in a X-Y matrix with m rows and n columns, comprising:
- means for displaying a particular one of said pixels using X-Y coincident addressing of data signals and drive signals,
- a plurality of column electrodes having said data signals impressed,
- a plurality of row electrodes having said drive signals impressed,
- said drive signals sequentially scanning one of said rows to apply said data signals on said column electrodes to display pixels where said data signals and said drive signals are coincident,
- a plurality of switches, each having an input electrode, an output electrode and a control electrode, placed at cross-points of the column electrodes and the row electrodes,
- said switches having said row electrodes as said control electrodes, said column electrodes as said input electrodes of said switches, and said pixels connected to the output electrodes of said switches,
- said data signals having first polarities on odd-numbered said rows, and said data signals having polarities opposite to said first polarities on even-numbered rows.
4 more elements
Dependencies are inferred from the claim text.