Method for detecting touch point and touch panel using the same
First Claim
1. A touch panel, comprising:
- a resistive pressure-sensing matrix, which comprises M X-axis sensing lines and N Y-axis sensing lines, wherein an ith X-axis sensing line and a jth Y-axis sensing line are short-circuited when a preset range covering an overlapped region between the ith X-axis sensing line and the jth Y-axis sensing line of the resistive pressure-sensing matrix is pressed;
a sequence scan driver having N driving terminals respectively coupled to the N Y-axis sensing lines; and
M X-axis sensing circuits, wherein;
a kth X-axis sensing circuit is coupled to a kth X-axis sensing line;
a sensing period of the touch panel is divided into N scanning periods, and a pth driving terminal of the sequence scan driver outputs a scanning voltage in a pth scanning period;
a qth X-axis sensing circuit receives the scanning voltage so that a touch coordinate is determined as (q, p) when the preset range covering the overlapped region between a pth Y-axis sensing line and a qth X-axis sensing line is pressed in the pth scanning period; and
M, N, i, j, k, p and q are positive integers, i ranges between 1 and M, j ranges between 1 and N, k ranges between 1 and M, q ranges between 1 and M, and p ranges between 1 and N.
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Abstract
The present invention relates to a method for detecting touch points and a touch panel using the same. The method includes the steps of: providing a resistive pressure-sensing matrix includes M X-axis sensing lines and N Y-axis sensing lines, wherein the ith X-axis sensing line and the jth Y-axis sensing line are short-circuited when a preset range covering an overlapped region between the ith X-axis sensing line and the jth Y-axis sensing line is pressed; applying a scanning voltage to the pth Y-axis sensing line in a pth scanning period; detecting the M X-axis sensing lines to judge whether the scanning voltage is detected; and determining a touch coordinate as (q, p) when the qth X-axis sensing line receives the scanning voltage in the pth scanning period, wherein M, N, i, p and q are positive integers, 0<i, q<=M and 0<p<=N.
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Citations
5 Claims
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1. A touch panel, comprising:
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a resistive pressure-sensing matrix, which comprises M X-axis sensing lines and N Y-axis sensing lines, wherein an ith X-axis sensing line and a jth Y-axis sensing line are short-circuited when a preset range covering an overlapped region between the ith X-axis sensing line and the jth Y-axis sensing line of the resistive pressure-sensing matrix is pressed; a sequence scan driver having N driving terminals respectively coupled to the N Y-axis sensing lines; and M X-axis sensing circuits, wherein; a kth X-axis sensing circuit is coupled to a kth X-axis sensing line; a sensing period of the touch panel is divided into N scanning periods, and a pth driving terminal of the sequence scan driver outputs a scanning voltage in a pth scanning period; a qth X-axis sensing circuit receives the scanning voltage so that a touch coordinate is determined as (q, p) when the preset range covering the overlapped region between a pth Y-axis sensing line and a qth X-axis sensing line is pressed in the pth scanning period; and M, N, i, j, k, p and q are positive integers, i ranges between 1 and M, j ranges between 1 and N, k ranges between 1 and M, q ranges between 1 and M, and p ranges between 1 and N. - View Dependent Claims (2, 3)
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4. A method for detecting a plurality of touch points, the method comprising the steps of:
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providing a resistive pressure-sensing matrix, which comprises M X-axis sensing lines and N Y-axis sensing lines, wherein an ith X-axis sensing line and a jth Y-axis sensing line are short-circuited when a preset range covering an overlapped region between the ith X-axis sensing line and the jth Y-axis sensing line of the resistive pressure-sensing matrix is pressed; applying a scanning voltage to a pth Y-axis sensing line in a pth scanning period; detecting the M X-axis sensing lines to judge whether the scanning voltage is detected; and determining a touch coordinate as (q, p) when a qth X-axis sensing line receives the scanning voltage in a pth scanning period, wherein M, N, i, j, p and q are positive integers, i ranges between 1 and M, j ranges between 1 and N, q ranges between 1 and M, and p ranges between 1 and N. - View Dependent Claims (5)
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Specification