Touched position detection method for touch panel
View Patent ↗A static capacitance type touch panel, a control unit electrically connected with X and Y electrodes for detecting a touch position based on a measured value of a static capacitance between the X and Y electrodes. The control unit includes a predetermined touch threshold for detecting a peak, a near-peak range and a non-near-peak range, a first parameter for determining a value of the near peak range, and a second parameter for determining a value of the non-near-peak range. The first and second parameters are respectively predetermined for reduction of a noise influence from the measured value of the static capacitance between the X electrode and the Y electrode.
1. A static capacitance type touch panel comprising:
a plurality of X electrodes and Y electrodes;
a control unit electrically connected with the X electrodes and the Y electrodes for detecting a touch position based on a measured value of a static capacitance between the X electrodes and the Y electrodes;
wherein the control unit includes:
a predetermined touch threshold for detecting a peak, a near-peak range and a non-near-peak range,
a first parameter for determining a value of the near peak range, and
a second parameter for determining a value of the non-near-peak range,
wherein the first and second parameters are respectively predetermined for reduction of a noise influence from the measured value of the static capacitance between the X electrode and the Y electrode.
2. The static capacitance type touch panel according to claim 1 , wherein the control unit is configured to produce a weighted value from the first and second parameter.
3. The static capacitance type touch panel according to claim 2 , wherein the control unit is configured to calculate a touched position based on the weighted value.
4. The static capacitance type touch panel according to claim 1 , wherein the control unit is configured to select n number of X or Y electrodes as the near-peak range.
5. The static capacitance type touch panel according to claim 1 , wherein the predetermined touch threshold is a value which cannot be attained due to a noise only, but which can be attained due to presence of a touch.
6. A static capacitance type touch panel comprising:
a plurality of X electrodes and Y electrodes;
a control unit electrically connected with the X electrodes and the Y electrodes for detecting a touch position based on a measured value of a static capacitance between the X electrodes and the Y electrodes;
wherein the control unit includes:
a difference value calculated by subtracting a reference value from the measured value,
a predetermined touch threshold for detecting a peak, a near-peak range and a non-near-peak range;
a first weighed value calculated by subtracting an offset value of the near peak range from the difference value, and
a second weighted value calculated by subtracting an offset value of the non-near-peak range.
7. The static capacitance type touch panel according to claim 6 , wherein the control unit is configured to calculate a touched position based on the weighted value.
8. The static capacitance type touch panel according to claim 6 , wherein the control unit is configured to select n number of X or Y electrodes as the near-peak range.
9. The static capacitance type touch panel according to claim 6 , wherein the predetermined touch threshold is a value which cannot be attained due to a noise only, but which can be attained due to presence of a touch.