Drive device for display panel, drive method thereof and display apparatus

A drive method for a drive device, the drive device comprising a power management circuit, a digital power supply terminal, an internal driver circuit and a digital circuit which is connected to the digital power supply terminal,

• the method comprising:
• providing, by the power management circuit, a first power supply voltage to the digital power supply terminal;
• converting, by the internal driver circuit, a second power supply voltage provided by the power supply terminal into a third power supply voltage and providing the third power supply voltage to the digital power supply terminal;
• providing, by the digital power supply terminal, a digital voltage to the digital circuit;
• and
• providing, by the digital circuit, a drive voltage to the display panel under the drive of the digital voltage,
• wherein converting, by the internal driver circuit, the second power supply voltage provided by the power supply terminal into the third power supply voltage and providing the third power supply voltage to the digital power supply terminal comprises:
• converting, by the internal driver circuit, the second power supply voltage provided by the power supply terminal into the third power supply voltage and providing the third power supply voltage to the digital power supply terminal, when a voltage of the digital power supply terminal is lower than a reference voltage;
• and
• the method further comprises:
• controlling the internal driver circuit to stop providing a power supply voltage when the voltage of the digital power supply terminal is lower than the reference voltage;
• wherein the reference voltage is lower than a rated operating voltage of the digital power supply terminal, and the third power supply voltage is equal to the rated operating voltage of the digital power supply terminal.

A display apparatus, comprising a display panel, and a drive device connected to the display panel, the drive device comprising:

• a power management circuit, configured to provide a first power supply voltage to a digital power supply terminal;
• an internal driver circuit, configured to convert a second power supply voltage provided by a power supply terminal into a third power supply voltage and provide the third power supply voltage to the digital power supply terminal;
• and
• a digital circuit, which is connected to the digital power supply terminal, wherein the digital power supply terminal is configured to provide a digital voltage to the digital circuit, and the digital circuit is configured to provide a drive voltage to the display panel under the drive of the digital voltage;
• and
• the internal driver circuit is configured to convert the second power supply voltage provided by the power supply terminal into the third power supply voltage and provide the third power supply voltage to the digital power supply terminal when a voltage of the digital power supply terminal is lower than a reference voltage, and stop providing a power supply voltage when the voltage of the digital power supply terminal is not lower than the reference voltage;
• wherein
• the reference voltage is lower than a rated operating voltage of the digital power supply terminal, and the third power supply voltage is equal to the rated operating voltage of the digital power supply terminal.