Everdisplay Optronics (Shanghai) Limited

Changming Chiu

Hsiao-Yi Lin

A method for improving coordinate accuracy of a touch panel having sensing lines arranged to form an array includes the steps of: detecting existence of a touch point influencing at least one sensing line; determining existence of an edge sensing line; providing signal strengths to the at least one sensing line and a sensing line immediately adjacent to the at least one sensing line; generating a virtual sensing line extending out the touch panel and immediately adjacent to the at least one sensing line; providing a signal strength to the virtual sensing line; and obtaining actual coordinate of the touch point by weighing coordinates of the at least one sensing line, the sensing line immediately adjacent to the at least one sensing line and the virtual sensing line via system generated coordinates.

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Shanghai, China

Changming Chiu