DRIVING CIRCUIT FOR LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To make it possible to execute optimumγcorrection according to plural liquid crystal display panels by making it possible to set plural kinds of gradation voltage sets according to the characteristic curve of the transmittance of the liquid crystal display panels and impressed voltages. SOLUTION: The driving voltage from a writing data power source section 26 is supplied to a data driver section 22 and the data lines on a TFT substrate 13 are driven by the data driver section 22. The data driver section 22 supplied with the gradation signals and color signals corresponding to the video signals forms the gradation voltage sets subjected to theγcorrection and selects the driving voltages corresponding to the gradation signals from the formed gradation voltage sets. A reference power source is supplied from the writing data power source section 26 to the gradation voltage forming section. The gradation voltage forming section forms 64 kinds of the voltages subjected to theγcorrection corresponding to 64 gradations. The gradation voltage forming section is capable of setting plural kinds of the gradation voltage sets set according to the characteristic curve of the transmittance and impressed voltages of the liquid crystal display panel 20.