Touch sensitive processing apparatus, electronic system and method thereof for detecting defects of touch panel

A touch sensitive processing apparatus for detecting defects of a touch panel of an electronic system, wherein the electronic system includes a host and the touch panel, the host is used for executing an operating system to control the electronic system, the touch panel includes a plurality of parallel first touch sensitive electrodes and a plurality of parallel second touch sensitive electrodes, wherein the plurality of first and second touch sensitive electrodes form a plurality of touch sensitive areas, the touch sensitive processing apparatus includes:

• a detecting circuit;
• a drive circuit;
• an interconnection network for connecting the plurality of second touch sensitive electrodes with the detecting circuit and for connecting at least one of the first touch sensitive electrodes with the drive circuit;
• and
• a microprocessor configured for having the drive circuit emit a drive signal from the at least one of the first touch sensitive electrodes;
• having the detecting circuit detect the drive signal via the plurality of second touch sensitive electrodes;
• calculating a phase shift between each neighboring pair of second touch sensitive electrodes of the plurality of second touch sensitive electrodes;
• and when the phase shift is larger than a phase shift threshold, determining at least one of the two second touch sensitive electrodes is faulty and reporting information related to the defect to the host.

A touch sensitive processing method adaptable to a touch sensitive processing apparatus for detecting defects of a touch panel of an electronic system, wherein the electronic system includes a host, the touch sensitive processing apparatus and the touch panel, the host is used for executing an operating system to control the electronic system, the touch panel includes a plurality of parallel first touch sensitive electrodes and a plurality of parallel second touch sensitive electrodes, wherein the plurality of first and second touch sensitive electrodes form a plurality of touch sensitive areas, the touch sensitive processing apparatus includes:

• a detecting circuit, a drive circuit and an interconnection network, the touch sensitive processing method comprises:
• connecting, via the interconnection network, the plurality of second touch sensitive electrodes with the detecting circuit, and at least one of the first touch sensitive electrodes with the drive circuit;
• having the drive circuit emit a drive signal from the at least one of the first touch sensitive electrodes;
• having the detecting circuit detect the drive signal via the plurality of second touch sensitive electrodes;
• calculating a phase shift between each neighboring pair of second touch sensitive electrodes of the plurality of second touch sensitive electrodes;
• and
• when the phase shift is larger than a phase shift threshold, determining at least one of the two second touch sensitive electrodes is faulty and reporting information related to the defect to the host.