Implementation of drive of touch flat panel display

Abstract

A touch screen and a flat panel display are provided, and more particularly a touch flat panel display is provided. The touch flat panel display includes a display screen and a driving circuit. A touch excitation source providing touch excitation energy is connected with a power end of a last-stage driving cell of the driving circuit, an output end of the last-stage driving cell is connected with an electrode line of the display screen, and the touch system circuit judges whether the electrode line of the display screen connected with the driving unit is touched by detecting a change of a touch signal flowing through the power end or the output end of the last-stage driving cell. The disclosed structural relation of circuits between the touch system circuit, the display driving circuit, and the display screen not only simplifies the connection between the touch system circuit, the display driving circuit, and electrodes of the display screen, but also can prevent the influence of a distributed capacitance within the display driving circuit on the touch signal.

Dependencies are inferred from the claim text.