Control circuit, display system, and related method of controlling display panel

A method of controlling a display panel for a control circuit, the control circuit coupled to a system processor, the method comprising:

• detecting a finger touch on the display panel;
• controlling the display panel to display at least one light spot which indicates a position of the finger touch;
• performing fingerprint sensing through at least one fingerprint sensor corresponding to the position of the finger touch;
• and
• sending fingerprint image data to the system processor, wherein the fingerprint image data corresponds to sensing signals received from the at least one fingerprint sensor;
• wherein each of the above steps is performed by the control circuit by keeping a display part of the system processor in a sleep status.

A display system, comprising:

• a display panel;
• a system processor;
• and
• a control circuit, coupled to the system processor and configured to control the display panel, configured to:
• detect a finger touch on the display panel;
• control the display panel to display at least one light spot which indicates a position of the finger touch;
• and
• perform fingerprint sensing through at least one fingerprint sensor corresponding to the position of the finger touch, and send fingerprint image data to the system processor, wherein the fingerprint image data corresponds to sensing signals received from the at least one fingerprint sensor;
• wherein each of the above steps is performed by the control circuit by keeping a display part of the system processor in a sleep status.