TOUCH PANEL, POSITION SENSING METHOD OF TOUCH PANEL, AND INTEGRATED CIRCUIT
First Claim
1. A touch panel comprising:
- a touch screen including a plurality of X electrode lines and Y electrode lines, which are alternately disposed with each other, and generating signals that vary depending on a touch position; and
a plurality of comparators connected between first and second Y electrode lines adjacent to each other,wherein the touch position on the touch screen is detected based on output codes prepared by using output values of the comparators.
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Accused Products
Abstract
A touch panel according to the disclosure includes a touch screen including a plurality of X electrode lines and Y electrode lines, which are alternately disposed with each other, and generating signals that vary depending on a touch position; and a plurality of comparators connected between first and second Y electrode lines adjacent to each other, wherein the touch position on the touch screen is detected based on output codes prepared by using output values of the comparators. A method for detecting a position of a touch panel according to the disclosure includes the steps of generating a position signal that varies according to a touch position between a plurality of X electrode lines and first and second Y electrode lines, which are adjacent to each other and alternately disposed with X electrode lines; detecting adjacent signals from a Y electrode line adjacent to a left of the first Y electrode and a Y electrode line adjacent to a right of the second Y electrode line; inputting the adjacent signal as an input signal of the comparator; overlapping the position signal on one of the detected adjacent signals; and comparing the input signal using the comparator. An integrated circuit according to the disclosure includes a plurality of comparators including a positive input terminal receiving a first input signal that varies depending on a touch position, a negative input terminal receiving a second input signal, and an output terminal outputting a comparison signal of the first and second input signals; and an operation unit generating a position signal by reading out the comparison signal of the comparators.
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Citations
24 Claims
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1. A touch panel comprising:
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a touch screen including a plurality of X electrode lines and Y electrode lines, which are alternately disposed with each other, and generating signals that vary depending on a touch position; and a plurality of comparators connected between first and second Y electrode lines adjacent to each other, wherein the touch position on the touch screen is detected based on output codes prepared by using output values of the comparators. - View Dependent Claims (2, 3, 4)
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5. A touch panel comprising:
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first and second Y electrode lines, which are adjacent to each other and divided into at least two main sections each of which is divided into at least two sub-sections; and a TD electrode line disposed across the first and second Y electrode lines, wherein the touch position is detected by comparing a potential difference value at a first time point according to the touch position between the first and second Y electrode lines with a potential value applied to the TD electrode line at a second time point corresponding to a potential value at a boundary point between adjacent sub-sections. - View Dependent Claims (6, 7, 8)
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9. An integrated circuit comprising:
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a plurality of comparators including a positive input terminal receiving a first input signal that varies depending on a touch position, a negative input terminal receiving a second input signal, and an output terminal outputting a comparison signal of the first and second input signals; a voltage applying unit connected to the positive and negative input terminals to apply a drive voltage; and an operation unit generating a position signal by reading out the comparison signal of the comparators. - View Dependent Claims (10, 11, 13, 14, 16, 22, 23, 24)
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12. (canceled)
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15. (canceled)
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17-20. -20. (canceled)
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21. The integrated circuit of 14, wherein the operation unit that generates a position signal related to the X-axis by reading out the comparison signal of the first comparators and generates a position signal related to the Y-axis by reading out the comparison signal of the second comparators.
Specification