TOUCH PANEL AND CONTROLLING METHOD THEREOF

摘要

The controlling method for a touch panel is disclosed. The controlling methods includes: executing a waking-up procedure to output a waking-up signal; comparing a measured value of the waking-up signal with a pre-determined threshold value; the touch panel staying in a power-saving mode if the measured value of the waking-up signal is smaller than the positive pre-determined threshold value or larger than the negative pre-determined threshold value; and the touch panel starting a detection procedure if the measured value of the waking-up signal is larger than the positive pre-determined threshold value or smaller than the negative default threshold.

主权项

1. A controlling method for a touch panel, wherein the touch panel comprises an active area, a first electrical layer including a plurality of first electrodes and a second electrical layer including a plurality of second electrodes, the first electrical layer and the second electrical layer are disposed in the active area, the method comprising:
executing a waking-up procedure for outputting a waking-up signal; comparing a measured value of the waking-up signal with a pre-determined threshold value including a positive pre-determined threshold value and/or a negative pre-determined threshold value; the touch panel staying in a power-saving state if the measured value of the waking-up signal is smaller than the positive pre-determined threshold value or larger than the negative pre-determined threshold value; and activating a detection procedure if the measured value of the waking-up signal is larger than the positive pre-determined threshold value or smaller than the negative pre-determined threshold value, and the detection procedure comprising:
driving the first electrodes in turn or in groups;detecting electrical changes of the second electrodes; anddetermining a location of at least one touch point according to the detected electrical changes.