| 摘要 |
In a display panel driver an output amplifier circuit includes a first output stage to receive a power supply voltage and a first voltage lower thereto and to output a drive voltage in a first voltage range defined between the power supply voltage and a middle power supply voltage; and a second output stage to receive the power supply and ground voltages and to output a drive voltage between the power supply and ground voltages. In a first mode that the first voltage is set as the middle power supply voltage, the first output stage outputs a first drive voltage in the first voltage range to one of first and second output terminals. In a second mode that the first voltage is set as the ground voltage, the second output stage outputs a first drive voltage in the first voltage range to one of the first and second output terminals.
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