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; 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, further comprising;
determining at least one touch-related first sensor based on the at least one first 1-D position; and
determining at least one touch-related second sensor based on the at least one second 1-D position, further comprising;
when the number of the at least one touch-related second sensor is greater than the number of the at least one touch-related first sensor, providing at least one 2-D position based on the at least one second 1-D position corresponding to the at least one first 1-D position.
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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.
55 Citations
17 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; 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, further comprising;
determining at least one touch-related first sensor based on the at least one first 1-D position; and
determining at least one touch-related second sensor based on the at least one second 1-D position, further comprising;
when the number of the at least one touch-related second sensor is greater than the number of the at least one touch-related first sensor, providing at least one 2-D position based on the at least one second 1-D position corresponding to the at least one first 1-D position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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; 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, wherein the controller further includes performing the following operations;
determining at least one touch-related first sensor based on the at least one first 1-D position; and
determining at least one touch-related second sensor based on the at least one second 1-D position, wherein the controller further includes performing the following operations;
when the number of the at least one touch-related second sensor is greater than the number of the at least one touch-related first sensor, providing at least one 2-D position based on the at least one second 1-D position corresponding to the at least one first 1-D position. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification