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1. WO2006098527 - METHOD AND APPARATUS FOR CONVERTING GRADATION DATA IN TFT LCD

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS
1. In a method for converting gradation data applied to an LCD panel, on which a plurality of data lines and gate lines are crossed with each other, having FETs and cell capacitors on respective crossings between the data lines and the gate lines, the method for converting gradation data in TFT LCD
comprising the steps of:
inputting gradation data corresponding to one scan line from outside;
receiving and storing gradation values corresponding to a present image from cell capacitors mounted on the LCD panel;
converting gradation data values input from outside based on the two gradation values; and
driving the LCD panel based on the converted gradation data.

2. The method for converting gradation data in TFT LCD as recited in claim 1 , wherein the step of converting gradation data converts the input gradation data values to increase a difference more between the gradation data values input from outside and the gradation data values stored in the capacitors.

3. In an apparatus for converting gradation data applied to an LCD panel, on which a plurality of data lines and gate lines are crossed with each other, having FETs and cell capacitors on respective crossings between the data lines and the gate lines, the method for converting gradation data in TFT LCD comprising:
a first storing means for storing gradation data input from outside;
an analog/digital converting means, connected with respective data lines of an LCD panel, for converting voltage values on the data lines into digital data;
a second storing means for storing data values output from the
analog/digital converting means;
a data converting means for converting data values stored in the first storing means based on data values stored in the first and second storing means and for storing converted data values in a gradation driving means; and
a gradation driving means for driving the LCD panel based on the data values stored by the data converting means.

4. The apparatus for converting gradation data in TFT LCD as recited in claim 1 , wherein the data converting means converts the data values stored in the first storing means to increase a difference more between the data values stored in the first storing means and the data values stored in the second storing means.