Method for improving touch performance of capacitive touch screen with non-rectangular shape
AssigneeHimax Technologies Limited
InventorsCheng-Hung Tsai, Yan-Hua Shu, Jen-Chieh Lin, Wai-Pan Wu
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Abstract
A method for improving touch performance of a capacitive touch screen with a non-rectangular shape is provided. The capacitive touch screen includes plural complete cells and at least one incomplete cell for sensing. The method includes: determining whether an active area of the incomplete cell is different from an active area of each of the complete cells; and performing a mutual capacitance compensation on the incomplete cell to compensate a mutual capacitance of the incomplete cell when the active area of the incomplete cell is different from the active area of each of the complete cells.
Claims9
A method for improving touch performance of a capacitive touch screen with a non-rectangular shape, wherein the capacitive touch screen comprises a plurality of complete cells and at least one incomplete cell for sensing, the method comprising:
- determining whether an active area of the incomplete cell is different from an active area of each of the complete cells;
- and
- performing a mutual capacitance compensation on the incomplete cell to compensate a mutual capacitance of the incomplete cell when the active area of the incomplete cell is different from the active area of each of the complete cells;
- wherein the capacitive touch screen comprises a plurality of receiver (RX) electrodes and a plurality of transmit (TX) electrodes;
- wherein an intersection of one of the RX electrodes and one of the TX electrodes corresponds to one of the complete cells or the incomplete cell;
- wherein performing the mutual capacitance compensation comprises:
- determining whether the incomplete cell has a residual area;
- and
- modifying a layout pattern of the incomplete cell of the capacitive touch screen to compensate the mutual capacitance of the incomplete cell when the incomplete cell has the residual area.
Dependencies are inferred from the claim text.