| 摘要 |
PURPOSE: To improve the picture quality of a liquid crystal display device and to reduce the number of internal transmission lines. CONSTITUTION: A polarity inversion signal POL and a horizontal scanning signal PH are inputted to an OR circuit 32 in parallel, and a serial signal voltage PH/POL is outputted from the OR circuit 32. The signal voltage PH/POL is inverted by an inverter 33, and an output signal U is outputted from the inverter 33. The output signal U is inverted by an inverter 34, and an output signal W is outputted from the inverter 34, MOSFETs 35 and 36 are complementarily turned on/off on the basis of the output signals U and W, and a signal current PH/POL is outputted from MOSFETs 35 and 36 to a transmission line 80. The transmitted signal current PH/POL is received by a reception part 71 of a data electrode driving circuit 50 and is converted to the signal voltage PH/POL by an I/V conversion circuit 72 of the reception part 71. The signal voltage PH/POL is converted to parallel polarity conversion signal POL and horizontal scanning signal PH by an S/P conversion circuit 73.
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