CAPACITIVE TOUCH APPARATUS
First Claim
1. A capacitive touch apparatus comprising:
- a first touch unit comprising a first conductive layer;
a first voltage difference retrieving unit electrically connected with one end of the first conductive layer and outputting a first voltage signal and a second voltage signal; and
a first feedback signal generating unit electrically connected with the first voltage difference retrieving unit, and outputting a first feedback signal according to the variation of the voltage difference between the first voltage signal and the second voltage signal for computing a touch position.
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Accused Products
Abstract
A capacitive touch apparatus includes a first touch unit, a first voltage difference retrieving unit, a first feedback signal generating unit, and a control unit. The first touch unit has a touch substrate and a first conductive layer. The first voltage difference retrieving unit is electrically connected with the first conductive layer and outputs a first voltage signal and a second voltage signal. The first feedback signal generating unit outputs a first feedback signal according to the variation of the voltage difference between the first voltage signal and the second voltage signal. The control unit receives the first feedback signal for computing the touch position and outputs a power signal to the first voltage difference retrieving unit. Hence, the capacitive touch apparatus improves the sensing speed and reduces the manufacturing cost by the simple circuit design.
11 Citations
18 Claims
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1. A capacitive touch apparatus comprising:
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a first touch unit comprising a first conductive layer; a first voltage difference retrieving unit electrically connected with one end of the first conductive layer and outputting a first voltage signal and a second voltage signal; and a first feedback signal generating unit electrically connected with the first voltage difference retrieving unit, and outputting a first feedback signal according to the variation of the voltage difference between the first voltage signal and the second voltage signal for computing a touch position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification