LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To provide a liquid crystal display device which has simple circuit constitution and inexpensive and further enables a user to feel that gamma correction is ideally performed. SOLUTION: In a grayscale reference voltage generation circuit 14 for gamma correction, a plurality of reference voltages VGM1 to VGM10 are generated by resistance dividing of predetermined reference voltages VCOM1 and VCOM2 and in a power supply circuit 28A (28B) of a source driver, a maximum grayscale reference voltage VGM1 (VGM6) and a minimum grayscale reference voltage VGM5 (VGM10) of the grayscale reference voltages are made low in impedance by a pair of buffers 31 and 32 (33 and 34). Resistance voltage dividing circuits R2' to R5' (R7' to R10') of predetermined resolution are connected between outputs of the pair of buffers and the other grayscale reference voltages are respectively supplied to voltage dividing points of the corresponding resistance voltage dividing circuit in parallel. Moreover, each voltage dividing point including both ends of the resistance voltage dividing circuits is connected to a corresponding reference voltage input terminal of a DA converting circuit 26A (26B). COPYRIGHT: (C)2007,JPO&INPIT