| 摘要 |
A display drive device includes a low-voltage circuit section driven by a first power supply potential and a high-voltage circuit section driven by a second power supply potential higher than the first power supply potential. The display drive device further includes a voltage supply circuit for supplying a third power supply potential different from the first and second power supply potentials, a common power supply line for connecting the third power supply potential to each of a plurality of output terminals, an output selection switch circuit for temporarily switching between display data output via the high-voltage circuit section to each output terminal, and the common power supply line, during a predetermined period, and a display data determining circuit for generating a control signal for controlling the output selection switch circuit. Thereby, the common power supply line is temporarily selected and controlled without signal collision when display data is switched. |
