Patent ID: 8766941

Claim:
A display device having an on-screen display (OSD) menu function, comprising: a touch display panel, comprising a display layer and a touch layer; a touch screen controller, coupled to the touch display panel to detect the touch layer, and outputting a first detection result; a display circuit, coupled to the touch display panel to display a first image of a first image source on the display layer, wherein the display circuit has the OSD menu function; and a multiplexer, coupled between the display circuit and the touch screen controller, wherein in a normal display mode, the multiplexer transmits the first detection result of the touch screen controller to the first image source, when the first detection result complies with a predetermined pattern, the OSD menu function of the display circuit is triggered to enter a screen adjustment mode, and the multiplexer transmits the first detection result of the touch screen controller to the display circuit.