Elan Microelectronics Corporation

Min-Jhih Lin

Yi-Hsin Tao

Chia-Hsing Lin

Hsin-Shieh Tsai

Chia-Mu Wu

Po-Hao Kuo

A passive architecture for scanning a touch panel includes a master IC and at least one passive touch IC connected to the master IC. The master IC generates a command to configure the scan parameters of the at least one passive touch IC, and the at least one passive touch IC scans the touch panel with the scan parameters in response to the command.

Passive architecture and control method for scanning a touch panel

Ghost resolution sensing methods are provided for capacitive touch panels. When ghost is detected involving two points on a capacitive touch panel, for each of the two points, the intersected traces at that one are concurrently charged to sense the capacitance value from either one of the intersected traces, and according thereto, a real point and a ghost point can be distinguished from each other. Alternatively, the intersected traces are crisscross driven by two synchronous and in phase signals or synchronous but out of phase signals, to sense the capacitance values at the two points. Preferably, intersectional calibration is performed in conjunction therewith, to recognize the real points.

Growing community of inventors

Kaohsiung, Taiwan

Min-Jhih Lin