Touch sensing apparatus and touch sensing method
AssigneeLx Semicon Co., Ltd.
InventorChan Hee Han
Life of this patent
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Abstract
The present disclosure relates to a technology for sensing a touch panel, in which vertical pattern electrodes and horizontal pattern electrodes are disposed, and provides a method for determining the sense of two touches when two touches are sensed in a touch panel and a method for preventing a ghost touch when changing data in an SNS touch pattern to data in a normal pattern at the time of sensing two touches.
Claims16
A touch sensing apparatus comprising a touch sensing circuit identifying touch coordinates based on sensing values of electrodes in a first direction and sensing values of electrodes in a second direction intersecting with the first direction, wherein the touch sensing circuit calculates a first touch electrode value by summing up sensing values of first-direction electrodes and second-direction electrodes, which are close to a first touch and calculates a second touch electrode value by summing up sensing values of first-direction electrodes and second-direction electrodes, which are close to a second touch;
- and determines that two touches occur in a diagonal direction when a sum of the first touch electrode value and the second touch electrode value is greater than a predetermined threshold value.
A touch sensing method comprising:
- receiving sensing values sensed by a plurality of first-direction pattern electrodes and a plurality of second-direction pattern electrodes disposed in a panel;
- calculating a first touch electrode value by summing up sensing values sensed by a plurality of second-direction pattern electrodes and sensing values sensed by a plurality of first-direction pattern electrodes, which are close to a first touch, and a second touch electrode value by summing up sensing values sensed by a plurality of second-direction pattern electrodes and sensing values sensed by a plurality of first-direction pattern electrodes, which are close to a second touch;
- and determining that two touches occur in a diagonal direction when a sum of the first touch electrode value and the second touch electrode value is greater than a predetermined threshold value.
Dependencies are inferred from the claim text.