| 摘要 |
PURPOSE: A liquid crystal display device is provided to apply a right voltage to a liquid crystal layer although an offset of an amplifier in a data driver circuit is dispersed. CONSTITUTION: A liquid crystal display device comprises a liquid crystal panel(130), which has a pixel consisting of a pixel transistor(141) and a pixel capacitor. The pixel capacitor consists of a pixel electrode(143) and a common electrode(144), which is connected to a common electrode line(132). A data driver circuit(110) drives a data line, and a gate driver circuit(120) drives a gate line. The data driver circuit(110) consists of a sample and hold circuit(111), an amplifier(113), and first and second switches(112,114). The sample and hold circuit(111) samples and holds an image signal of a 1 horizontal period, and the amplifier(113) is constructed so as to have the same number as an image output terminal(115b). The first switch(112) transfers either one of an output of the circuit(111) and a wire(Com) into an input of the amplifier(113). The second switch(114) transfers an output of the amplifier(113) into either one of an image signal output terminal(115a) and a common voltage output terminal(115b).
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