Abstract: An image memory for storing image data is connected to an applied voltage selecting circuit through a reading circuit. Image data is supplied to the applied voltage selecting circuit at predetermined timing. A temperature sensor for measuring a temperature of a liquid crystal display panel is connected to the applied voltage selecting circuit and supplies temperature data of the liquid crystal display panel to the applied voltage selecting circuit. The applied voltage selecting circuit is connected to a signal electrode driving circuit for applying a voltage to a signal electrode of the liquid crystal display panel, so as to supply applied voltage selecting signals S0 to S15 to the signal electrode driving circuit in accordance with the temperature data and the image data. The signal electrode driving circuit is connected to a driving voltage generating circuit, to which 16-staged voltages V0 to V15 are supplied.