Patent ID: 8952922
Filing Date: 2015-02-10
Classification: G06F

Abstract:
1. A sensing arrangement for touch panel application, comprising: a first sensing unit connected to a first trace line, when the first sensing unit operates with an exciter mode, the first sensing unit has a first phase and a second phase, and switches the first trace line to connect to an excitation node during the second phase; and a second sensing unit connected to a second trace line and connected to the first sensing unit through an equalization line, when the second sensing unit operates with a sensor mode, the second sensing unit has the first phase and the second phase, and supplies a charge current to the second trace line and generates a mirror current proportional to the charge current during the second phase; wherein the first and the second sensing units use the equalization line to balance the first and second trace lines to a same voltage level during the first phase; wherein the first sensing unit comprises: wherein the second sensing unit comprises: