Touch panel and coordinate measuring system having the same
First Claim
1. A touch panel comprising:
- a channel electrode unit configured to include a plurality of electrodes, the plurality of electrodes including a plurality of first electrodes disposed in a first direction and a plurality of second electrodes disposed in a second direction intersecting with the first direction; and
a processor configured to;
apply a driving signal to at least two electrodes of the plurality of electrodes in the channel electrode unit,transmit the driving signal to a resonance circuit of a stylus pen approaching the touch panel through a capacitive coupling, andreceive response signals generated from the resonance circuit of the stylus pen from each of the plurality of electrodes to determine a location of the stylus pen including the resonance circuit,wherein the processor is further configured to;
determine a location of the stylus pen,apply a first driving signal to a first plurality of electrodes corresponding to the location of the stylus pen, andapply a second driving signal, which is an inversion of the first driving signal, to a second plurality of electrodes disposed adjacent to the first plurality of electrodes.
1 Assignment
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Accused Products
Abstract
A touch panel is provided. The touch panel includes a channel electrode unit configured to include a plurality of first electrodes disposed in a first direction and a plurality of second electrodes disposed in a second direction intersecting with the first direction, and a controlling unit configured to apply a driving signal to the electrodes in the channel electrode unit in a unit of a plurality of electrodes, transmit the driving signal to a resonance circuit of a stylus pen approaching the touch panel through a capacitive coupling, and receive response signals generated from the resonance circuit of the stylus pen from each of the plurality of electrodes to determine a location of the stylus pen including the resonance circuit.
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Citations
21 Claims
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1. A touch panel comprising:
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a channel electrode unit configured to include a plurality of electrodes, the plurality of electrodes including a plurality of first electrodes disposed in a first direction and a plurality of second electrodes disposed in a second direction intersecting with the first direction; and a processor configured to; apply a driving signal to at least two electrodes of the plurality of electrodes in the channel electrode unit, transmit the driving signal to a resonance circuit of a stylus pen approaching the touch panel through a capacitive coupling, and receive response signals generated from the resonance circuit of the stylus pen from each of the plurality of electrodes to determine a location of the stylus pen including the resonance circuit, wherein the processor is further configured to; determine a location of the stylus pen, apply a first driving signal to a first plurality of electrodes corresponding to the location of the stylus pen, and apply a second driving signal, which is an inversion of the first driving signal, to a second plurality of electrodes disposed adjacent to the first plurality of electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification