Paratus Law Group, PLLC
Apparatus and method for detecting hovering object, switching matrix, apparatus for determining compensation capacitance, method of compensating for force sensing capacitance, and apparatus for detecting force input
Disclosed is a method of detecting a hovering object, the method including: an operation of precharging a compensation capacitor and a parallel capacitor, which is obtained by connecting in parallel a self-capacitor formed between an object hovering over a touch panel and an electrode of the touch panel and a parasitic capacitor of the touch panel, with a predetermined voltage; a first charge sharing operation of sharing charges by connecting the parallel capacitor and the compensation capacitor in series; a second charge sharing operation of sharing charges by connecting the parallel capacitor and the compensation capacitor in parallel; and an operation of outputting an electrical signal provided by the parallel capacitor while the parallel capacitor and the compensation capacitor are connected in parallel.
MELFAS INC. NPLANIC CO., LTD.
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Jeong Woo Byung Sang Seung Wook
Lee Rhim Lee