TOUCH RECOGNITION APPARATUS AND METHOD IN CAPACITIVE TOUCH SCREEN
First Claim
1. A touch recognition apparatus in a capacitive touch screen, the apparatus comprising:
- a touch panel including a first sub panel and a second sub panel intersecting each other, the first sub panel including a first electrode line and a second electrode line in an X axis, a plurality of resistors being connected between the first electrode line and the second electrode line in the X axis, sub electrode lines being connected to access nodes of the resistors, the second sub panel including a first electrode line and a second electrode line in a Y axis, a plurality of resistors being serially connected between the first electrode line and the second electrode line in the Y axis, and sub electrode lines being connected to access nodes of the resistors; and
a controller for outputting scan signals to the first electrode line in the X axis and the first electrode line in the Y axis, for receiving scan sensing signals through the second electrode line in the X axis and the second electrode line in the Y axis, and for measuring delay times between the scan signals and the scan sensing signals to determine touched positions in the X axis and the Y axis, respectively.
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Abstract
A touch recognition apparatus and method in a capacitive touch screen are provided. The touch recognition apparatus includes a touch panel including a first sub panel and a second panel intersecting each other, the first sub panel including a first electrode line and a second electrode line in X axis, a plurality of resistors being connected between the first electrode line and the second electrode line in X axis, and a controller outputting scan signals to the first electrode line in X axis and the first electrode line in Y axis, receiving scan sensing signals through the second electrode line in X axis and the second electrode line in Y axis, and measuring delay times between the scan signals and the scan sensing signals to touched positions in X axis and Y axis, respectively.
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Citations
11 Claims
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1. A touch recognition apparatus in a capacitive touch screen, the apparatus comprising:
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a touch panel including a first sub panel and a second sub panel intersecting each other, the first sub panel including a first electrode line and a second electrode line in an X axis, a plurality of resistors being connected between the first electrode line and the second electrode line in the X axis, sub electrode lines being connected to access nodes of the resistors, the second sub panel including a first electrode line and a second electrode line in a Y axis, a plurality of resistors being serially connected between the first electrode line and the second electrode line in the Y axis, and sub electrode lines being connected to access nodes of the resistors; and a controller for outputting scan signals to the first electrode line in the X axis and the first electrode line in the Y axis, for receiving scan sensing signals through the second electrode line in the X axis and the second electrode line in the Y axis, and for measuring delay times between the scan signals and the scan sensing signals to determine touched positions in the X axis and the Y axis, respectively. - View Dependent Claims (2, 3, 4, 5)
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6. The apparatus of claim 6, wherein the delay measuring unit determines that the scan sensing signal is received when a voltage level of the scan sensing signal increases to the on voltage level of the scan signal.
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7. A touch recognition method in a capacitive touch screen, the method comprising:
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outputting a scan signal in a first electrode line in an X axis and a first electrode line in a Y axis in a touch panel of the capacitive touch screen including a first sub panel and a second sub panel intersecting each other, the first sub panel including the first electrode line and a second electrode line in the X axis, a plurality of resistors being connected between the first electrode line and the second electrode line in the X axis, sub electrode lines being connected to access nodes of the resistors, the second sub panel including the first electrode line and a second electrode line in the Y axis, a plurality of resistors being serially connected between the first electrode line and the second electrode line in the Y axis, and sub electrode lines being connected to access nodes of the resistors; receiving respective scan sensing signals through the second electrode line in the X axis and the second electrode line in the Y axis; measuring a delay time between the outputting of the scan signal and the receiving of the scan sensing signal; and analyzing the delay time to determine touched positions in the X axis or the Y axis. - View Dependent Claims (8, 9, 10, 11)
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Specification