LCD and driving method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorYoung-Ki Kim
Life of this patent
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Abstract
There are provided an LCD and a driving method thereof for charging each data line of the LCD with sufficient data voltage. The present invention has a switching device installed between every adjacent data line, and the switching device connects the data line before a gate-on voltage is applied to the gate line thereby pre-charging the data line by charge sharing effect between the connected adjacent data lines and significantly reducing the change of the data line voltage by parasitic capacitance.
Claims10
A liquid crystal display, comprising:
- a liquid crystal panel including a plurality of gate lines, a plurality of insulated data lines crossing the gate lines, and a plurality of first thin film transistors each having a gate electrode connected to a gate line and a source electrode connected to a data line;
- a gate driver for sequentially supplying a gate-on voltage to the gate lines for turning on the thin film transistors;
- a data driver for applying a data voltage to the data lines;
- a data line sharing switch having a plurality of switching devices, each of which formed between the adjacent data lines to connect and disconnect the adjacent data lines;
- and
- a sharing signal generator for outputting a sharing control signal for turning on the switching devices.
A method for driving a liquid crystal display comprising a plurality of gate lines, a plurality of insulated data lines crossing the gate lines, and a plurality of thin film transistors, each having a gate electrode connected to a gate line and a source electrode connected to a data line, comprising the steps of:
- sequentially supplying a gate-on voltage for turning on the thin film transistor to the gate lines;
- connecting the adjacent data lines and charging the data lines with a predetermined voltage;
- and
- applying the data voltage to the data lines.
Dependencies are inferred from the claim text.