Touch position detecting device, method of detecting touch position and touch screen display device having the same
First Claim
1. A touch position detecting device comprising:
- a touch sensing unit sensing a touch event and outputting a sensing data;
a reference update unit updating a reference data stored in the reference update unit with an n-th frame sensing data provided from the touch sensing unit, based on a predetermined update signal; and
a position detecting unit detecting a touch position by using the reference data and an (n+i)-th frame sensing data provided from the touch sensing unit, wherein ‘
n’ and
‘
i’
are natural numbers.
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Abstract
A touch position detecting method, a device using the method, and a touch screen display device having the device are disclosed. A touch sensing unit senses a touch event and outputs a sensing data. A reference update unit updates a reference data with an n-th frame sensing data provided from the touch sensing unit, based on a predetermined update signal. A position detecting unit detects the touch position by using the reference data and an (n+i)-th frame sensing data from the touch sensing unit. Therefore, the touch position is easily detected by determining a difference between the reference data and the sensing data at a certain time.
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Citations
31 Claims
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1. A touch position detecting device comprising:
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a touch sensing unit sensing a touch event and outputting a sensing data;
a reference update unit updating a reference data stored in the reference update unit with an n-th frame sensing data provided from the touch sensing unit, based on a predetermined update signal; and
a position detecting unit detecting a touch position by using the reference data and an (n+i)-th frame sensing data provided from the touch sensing unit, wherein ‘
n’ and
‘
i’
are natural numbers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of detecting touch position, comprising:
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updating a reference data by a sensing data indicating that a touch event occurs, according to an update control signal externally provided; and
detecting a touch position data corresponding to a position at which the touch event occurs, by using the sensing data and the reference data. - View Dependent Claims (19, 20, 21)
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22. A touch screen display device comprising:
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a display panel displaying images by frame;
a sensing unit sensing a touch event by the frame to output a sensing data by the frame; and
a touch position detecting unit updating a reference data with an n-th frame sensing data provided from the sensing unit, based on an update control signal, and detecting a touch position data corresponding to the touch event using the reference data and an (n+i)-th frame sensing data provided from the sensing unit, wherein ‘
n’ and
‘
i’
are natural numbers. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification