Abstract: A signal enhancing method for capacitive touch panel of mobile device provides a reference potential by a reference bar that is next to a sensor bar, wherein when the reference potential is a ground potential, the reference bar becomes a ground (GND) bar. The sensor bar and GND bar may comprise a plurality of tiny sensor bars and a plurality of tiny GND bars, respectively; and may further comprise fishbone sensor bars and fishbone GND bars. The plurality of tiny sensor bars and plurality of tiny GND bars are arranged in an alternative disposition. In this way, when a touch panel is touched, a tiny sensor bar and adjacent tiny GND bar are both touched so as to obtain a large coupling capacitance.

Abstract: A method for unlocking a touchscreen device comprises no involvement of pressing a physical button of the touchscreen device. Rather, it employs a pre-defined touchscreen area as the unlocking spot. The location and size of this unlocking spot can be redefined by a user. When this spot is touched by a finger, a counter will start to count numbers. When it passes a pre-defined number threshold, the activation signal will be sent to a micro control unit (MCU) to activate the MCU. In this way, the touchscreen device is unlocked. In addition, a power saving circuit is provided to execute such unlocking function and reduce power consumption.