Method and device for position detection
First Claim
1. A method for position detection, 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;
determining at least one first 1-D position corresponding to at least one external touch based on signals of these first sensors by self-capacitance detection, wherein each first 1-D position is determined based on a dual-differential sensing information whose each value is based on signals of these sensors by self-capacitance direction; and
determining at least one second 1-D position corresponding to the at least one first 1-D position based on signals of these second sensors by mutual-capacitance detection.
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Abstract
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.
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Citations
19 Claims
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1. A method for position detection, comprising:
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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; determining at least one first 1-D position corresponding to at least one external touch based on signals of these first sensors by self-capacitance detection, wherein each first 1-D position is determined based on a dual-differential sensing information whose each value is based on signals of these sensors by self-capacitance direction; and determining at least one second 1-D position corresponding to the at least one first 1-D position based on signals of these second sensors by mutual-capacitance detection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for position detection, comprising:
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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; and a controller for performing at least the following operations; determining at least one first 1-D position corresponding to at least one external touch based on signals of these first sensors by self-capacitance detection, wherein each first 1-D position is determined based on a dual-differential sensing information whose each value is based on signals of three sensors by self-capacitance detection; and determining at least one second 1-D position corresponding to the at least one first 1-D position based on signals of these second sensors by mutual-capacitance detection. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification