| 摘要 |
<P>PROBLEM TO BE SOLVED: To compensate for the unwanted non-touch capacitance changes in a touch sensing device. <P>SOLUTION: The touch sensing device includes a touch sensor panel having touch sensors for sensing a touch at the panel, a flexible circuit for transmitting the sensed touch signal from the panel, and a touch controller for receiving and processing the transmitted signal. To compensate for the capacitance changes, the touch sensing device includes one or more reference conductive traces decoupled from touch sensors of the device to measure non-touch capacitance in the device. The touch sensing device adjusts a touch signal from the touch sensors using the non-touch capacitance measurements to substantially reduce or eliminate the non-touch capacitance from the signal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
