PROJECTED CAPACITANCE TOUCH PANEL WITH REFERENCE AND GUARD ELECTRODE
First Claim
1. A mutual capacitance touch panel device, comprising:
- a substrate;
an array of electrode elements formed on the substrate, each electrode element including a drive electrode, a sense electrode and a reference electrode, the reference electrode arranged between the drive electrode and the sense electrode; and
a first mutual coupling capacitance formed between the drive electrode and the reference electrode of each electrode element, wherein the drive electrode and reference electrode are configured such that the first mutual coupling capacitance is substantially insensitive to an object touching the surface of the touch panel.
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Accused Products
Abstract
A mutual capacitance touch panel device includes a substrate, and an array of electrode elements formed on the substrate. Each electrode element includes a drive electrode, a sense electrode and a reference electrode, the reference electrode arranged between the drive electrode and the sense electrode. A first mutual coupling capacitance is formed between the drive electrode and the reference electrode of each electrode element, wherein the drive electrode and reference electrode are configured such that the first mutual coupling capacitance is substantially insensitive to an object touching the surface of the touch panel.
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Citations
20 Claims
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1. A mutual capacitance touch panel device, comprising:
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a substrate; an array of electrode elements formed on the substrate, each electrode element including a drive electrode, a sense electrode and a reference electrode, the reference electrode arranged between the drive electrode and the sense electrode; and a first mutual coupling capacitance formed between the drive electrode and the reference electrode of each electrode element, wherein the drive electrode and reference electrode are configured such that the first mutual coupling capacitance is substantially insensitive to an object touching the surface of the touch panel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for creating a mutual capacitance touch panel device, comprising
forming an array of electrode elements on a substrate, each electrode element including a drive electrode, a sense electrode and a reference electrode, the reference electrode arranged between the drive electrode and the sense electrode, wherein each electrode element is arranged such that a first mutual coupling capacitance formed between the drive electrode and the reference electrode of the respective electrode element is substantially insensitive to an object touching the surface of the touch panel.
Specification