| 摘要 |
A touch sensing circuit includes an alternative current (AC) source, a voltage division circuit, and a processing circuit. The voltage division circuit receives an AC signal outputted from the AC source and includes a first branch and a second branch on a touch sensing glass, wherein the first and second branches are adjacent to each other. The processing circuit is connected to the voltage division circuit for determining position of a touch point according to the voltages of the first branch and the second branch. In a preferred embodiment, the first branch comprises a first capacitor and a first voltage division resistor connected to the first capacitor, and the second branch comprises a second capacitor and a second voltage division resistor connected to the second capacitor. |
