Patent ID: 11880524
Assignee: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display touch device, comprising a display panel, a display touch driving circuit and a touch operation processing circuit, wherein the display panel includes a plurality of gate lines;
the touch operation processing circuit is configured to provide a first touch enable signal to the display touch driving circuit when it is detected that the display touch device is in a touch-only detection state, to control the display touch driving circuit to perform touch detection,
wherein the display touch device further comprises a power supply control circuit, a display power supply terminal, a touch power supply terminal and a power management module; wherein the power management module is configured to supply power to the display touch driving circuit according to a power supply voltage inputted by a voltage input terminal of the power management module;
the power supply control circuit is respectively electrically connected to the display power supply terminal, the touch power supply terminal and the power management module, and is configured to control to connect the display power supply terminal and the voltage input terminal when the display power supply terminal provides a display power supply voltage, and is configured to control to connect the touch power supply terminal and the voltage input terminal when the display power supply terminal does not provide the display power supply voltage and the touch power supply terminal provides a touch power supply voltage,
wherein the power supply control circuit comprises a voltage dividing sub-circuit, a signal generation sub-circuit and a power supply control sub-circuit;
the voltage dividing sub-circuit is electrically connected to the display power supply terminal and the signal generating sub-circuit respectively, and is configured to divide the display power supply voltage when the display power supply terminal provides the display power supply voltage, to generate and output a display working voltage through a display working voltage terminal;
the signal generation sub-circuit is electrically connected to the display working voltage terminal and the control signal output terminal respectively, and is configured to generate and output a control signal through the control signal output terminal according to the display working voltage, when the display working voltage is greater than a first predetermined voltage, the control signal is controlled to be a first voltage signal, and when the display working voltage is less than the first predetermined voltage, the control signal is controlled to be a second voltage signal;
the power supply control sub-circuit is respectively electrically connected to the control signal output terminal, the display power supply terminal, the touch power supply terminal and the voltage input terminal, and is configured to control to connect the display power supply terminal and the voltage input terminal when the control signal is a first power supply signal, and control to connect the touch power supply terminal and the voltage input terminal when the control signal is the second voltage signal.