Method and device for position detection

摘要

A method and device for position detection are disclosed. A self-capacitance detection can be performed by a sensing device. According to the result of the self-capacitance detection, a first mutual-capacitance detection can be performed for determining one or more first 1-D positions. According to the result of the first mutual-capacitance detection, a second mutual-capacitance detection can be performed for determining one or more second 1-D positions corresponding to each first 1-D position. One or more 2-D positions can be provided according to the one or more second 1-D positions corresponding to each first 1-D position. Besides, during the self-capacitance detection, the first mutual-capacitance detection, and the second mutual-capacitance detection, a touch related sensing information corresponding to a touch that covers a wide area can be neglected for palm rejection.

主权项

1. A method for position detection that neglects wide-area touches, comprising:
providing a sensing device including a plurality of sensors including a plurality of first sensors and a plurality of second sensors, these first and second sensors intersecting each other at a plurality of intersecting points; obtaining a first 1-D sensing information from signals of the first sensors by self-capacitance detection; obtaining a second 1-D sensing information from signals of the second sensors by self-capacitance detection; determining a detected touch related sensing information based on the range of each touch related sensing information on the first 1-D sensing information and the second 1-D sensing information, wherein each touch related sensing information corresponds to a touch or approach by at least one external object; analyzing at least one 1-D position based on each detected touch related sensing information; and analyzing at least one 2-D position by performing mutual-capacitance detection on each 1-D position.