TOUCH PANEL AND DIFFERENTIAL DETECTION METHOD FOR SAME
First Claim
1. A differential detection method of a touch panel, wherein the touch panel has a plurality of scan electrodes and a plurality of sensing electrodes respectively along a first axial direction and a second axial direction;
- the differential detection method comprising;
selecting the i-th scan electrode within the scan electrodes so as to provide a driving signal to the i-th scan electrode, wherein i is integer;
sensing a feature difference value Δ
C(i, j) between the j-th sensing electrode within the sensing electrodes and another neighbouring sensing electrode during providing the driving signal to the i-th scan electrode, wherein j is an integer;
sensing a feature difference value Δ
Ci between the k-th sensing electrode within the sensing electrodes and a reference feature value during providing the driving signal to the i-th scan electrode, wherein k is an integer;
setting the feature value of a base sensing point within a plurality of sensing points of the touch panel as a base feature value; and
using the base feature value, the feature difference values Δ
Ci and the feature difference values Δ
C(i,j) to calculate the feature values of the sensing points.
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Abstract
A touch panel and a differential detection method thereof are disclosed. A controller provides a driving signal to the i-th scan electrode. During providing the driving signal to the i-th scan electrode, the controller senses the feature difference value between two neighbouring sensing electrodes within the plural sensing electrodes, and senses the feature difference value ΔCi between the k-th sensing electrode within the sensing electrodes and a reference feature value, in which the feature difference values between the j-th sensing electrode and the (j+1)-th sensing electrode is represented by ΔC(i,j). The controller set the feature value of a base sensing point within a plurality of sensing points of the touch panel as a base feature value, and use the base feature value, the feature difference values ΔCi and the feature difference values ΔC(i,j) to calculate the feature values of the sensing points.
34 Citations
23 Claims
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1. A differential detection method of a touch panel, wherein the touch panel has a plurality of scan electrodes and a plurality of sensing electrodes respectively along a first axial direction and a second axial direction;
- the differential detection method comprising;
selecting the i-th scan electrode within the scan electrodes so as to provide a driving signal to the i-th scan electrode, wherein i is integer; sensing a feature difference value Δ
C(i, j) between the j-th sensing electrode within the sensing electrodes and another neighbouring sensing electrode during providing the driving signal to the i-th scan electrode, wherein j is an integer;sensing a feature difference value Δ
Ci between the k-th sensing electrode within the sensing electrodes and a reference feature value during providing the driving signal to the i-th scan electrode, wherein k is an integer;setting the feature value of a base sensing point within a plurality of sensing points of the touch panel as a base feature value; and using the base feature value, the feature difference values Δ
Ci and the feature difference values Δ
C(i,j) to calculate the feature values of the sensing points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the differential detection method comprising;
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11. A touch panel, comprising:
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a first conductive layer; a plurality of scan electrodes, disposed at a side of the first conductive layer along a first axial direction; a second conductive layer; a plurality of sensing electrodes, disposed at a side of the second conductive layer along a second axial direction; and a controller, selecting the i-th scan electrode within the scan electrodes so as to provide a driving signal to the i-th scan electrode, wherein during providing the driving signal to the i-th scan electrode, the controller senses the feature difference value Δ
C(i, j) between the j-th sensing electrode within the sensing electrodes and another neighbouring sensing electrode;
during providing the driving signal to the i-th scan electrode, the controller senses the feature difference value Δ
Ci between the k-th sensing electrode within the sensing electrodes and a reference feature value, the above-mentioned i, j and k are integers;
the controller sets the feature value of a base sensing point within a plurality of sensing points of the touch panel as a base feature value; and
the controller uses the base feature value, the feature difference values Δ
Ci and the feature difference values Δ
C(i,j) to calculate the feature values of the sensing points. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification