Patent ID: 8300024

Claim:
A system for displaying images, comprising: a touch sensing circuit comprising a voltage storage unit for detecting whether a touch event has occurred and generating a corresponding voltage, wherein the voltage storage unit comprises: a first capacitor having a first terminal coupled to a ground terminal and a second terminal coupled to a first node; a second capacitor having a first terminal coupled to the ground terminal and a second terminal coupled to a second node, wherein when the voltage storage unit detects whether a touch event has occurred, and the second node is coupled to an alternating current (AC) voltage; a third capacitor formed between the first and second nodes, wherein when the touch event has occurred, a value of the third capacitor is changed, so that the corresponding voltage at the first node is changed; a first switch element having a first terminal coupled to the first node and a second terminal coupled to the second node; and a second switch element having a first terminal coupled to the first node and a second terminal.