DISPLAY DRIVER AND SEMICONDUCTOR APPARATUS

The invention relates to a display driver and a semiconductor device. The purpose of the present invention is to provide a display driver capable of reducing the circuit scale without shortening the product life, and a semiconductor device in which the display driver is formed. tHE display driver according to the present invention includes a withstand voltage protection part that precharges an output node of a polarity changeover switch circuit that switches a polarity of a drive signal supplied to a display device from an electric potential of a positive polarity (a first electric potential to a third electric potential) to an electric potential of a negative polarity (the third electric potential to a second electric potential) or vice versa to the third electric potential immediately before the polarity switching. 本发明涉及显示驱动器和半导体装置。目的在于提供能够在不会使产品寿命变短的情况下谋求电路规模的缩小化的显示驱动器和该显示驱动器被形成的半导体装置。本发明的显示驱动器包括耐压保护部，所述耐压保护部将使供给到显示设备的驱动信号的极性从正极性的电位（第一电位～第三电位）切换为负极性的电位（第三电位～第二电位）、或其相反地切换的极性切换开关电路的输出节点在其极性切换的稍前预充电到第三电位。