Apparatus and method for increasing accuracy of touch sensor
First Claim
1. An apparatus for increasing the sensing accuracy of a touch sensor comprising:
- a transparent or translucent substrate;
a conductive film very thinly coated on the upper surface of the substrate;
a plurality of resistor elements consisting of conductive material, printed in at least one or more than one row and in a discontinuous manner, on the upper surface of the conductive membrane at the perimeter thereof, wherein adjacent ends of individual resistor elements are joined at the junctions at or near the four corners by wires, and wherein first gaps are formed between each independent row of resistor elements;
a plurality of insulator elements discontinuously formed by removing a part of the conductive film near the inner side of the resistor elements on the surface thereof, the removed portions thus forming the insulator elements which are arranged;
in at least more than one row, on the inner side of the resistor elements; and
a plurality of second gaps formed between each row of the plurality of insulator elements.
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Accused Products
Abstract
An apparatus for increasing the sensing accuracy of a touch sensor comprises a transparent or translucent substrate; a conductive film coated on the upper surface of the substrate; a plurality of resistor elements printed in at least one or more than one row, wherein adjacent ends of individual resistor elements are joined at the junctions at or near the four corners by wires, and wherein first gaps are formed between each independent row of resistor elements; a plurality of insulator elements formed discontinuously formed by removing a part of the conductive film near the inner side of the resistor elements on the surface thereof, the removed portions thus forming the insulator elements which are arranged; in at least more than one row, on the inner side of the resistor elements; and a plurality of second gaps formed between each row of the plurality of insulator elements.
34 Citations
6 Claims
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1. An apparatus for increasing the sensing accuracy of a touch sensor comprising:
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a transparent or translucent substrate;
a conductive film very thinly coated on the upper surface of the substrate;
a plurality of resistor elements consisting of conductive material, printed in at least one or more than one row and in a discontinuous manner, on the upper surface of the conductive membrane at the perimeter thereof, wherein adjacent ends of individual resistor elements are joined at the junctions at or near the four corners by wires, and wherein first gaps are formed between each independent row of resistor elements;
a plurality of insulator elements discontinuously formed by removing a part of the conductive film near the inner side of the resistor elements on the surface thereof, the removed portions thus forming the insulator elements which are arranged;
in at least more than one row, on the inner side of the resistor elements; and
a plurality of second gaps formed between each row of the plurality of insulator elements. - View Dependent Claims (4, 5, 6)
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2. A method for increasing the sensing accuracy of a touch sensor comprising the steps of:
- (1) connecting lead wires respectively onto the voltage junctions at the four corners of a plurality of resistor elements;
(2) applying a positive electrod voltage electrode to selected two of the junctions and applying an applying OV voltage to the other two of the junctions;
(3) utilizing the resistive area formed by the discontinuous resistor elements located on the conductive film layer and the first gaps between adjacent resistor elements to reduce the current flowing through each individual resistor element so that a higher impedance value may be obtained on the surface of the conductive film, and to lower the field strength between the junctions of two corners, to thereby preliminarily minimize the degree of curvature of the equipotential lines; and
(4) utilizing the second gaps located between the rows of the plurality of insulator elements as resistive area, whereby the blockage of the insulator elements causes the electrical field produced from the two ends of each resistor element to flow toward the second gaps, to thereby further effectively rectify the curvature of the equipotential lines generated from the resistor elements and first gaps, thus finally making the equipotential lines in the x direction and y direction of the electrical field on the conductive film straight or linear. - View Dependent Claims (3)
- (1) connecting lead wires respectively onto the voltage junctions at the four corners of a plurality of resistor elements;
Specification