Linearized touch sensor having protective coating
First Claim
Patent Images
1. A touch sensor comprising:
- an electrically resistive layer covering a touch sensitive area;
an electrically insulative layer disposed on the electrically resistive layer, the insulative layer having open areas, each of the open areas exposing a portion of the resistive layer; and
a plurality of electrically conductive segments disposed on the insulative layer, each of the conductive segments making electrical contact with the resistive layer through at least one of the open areas in the insulative layer, wherein the plurality of electrically conductive segments improves linearity of the touch sensitive area.
1 Assignment
0 Petitions
Accused Products
Abstract
A touch sensor is disclosed. The sensor includes an electrically resistive layer that covers a touch sensitive area. The sensor further includes an electrically insulative layer that is disposed on the electrically resistive layer. The insulative layer has one or more open areas. Each open area exposes a portion of the resistive layer. The sensor also includes a plurality of electrically conductive segments that are disposed on the insulative layer. Each conductive segment makes electrical contact with the resistive layer through at least one of the open areas in the insulative layer. The conductive segments improve linearity of the touch sensitive area.
-
Citations
23 Claims
-
1. A touch sensor comprising:
-
an electrically resistive layer covering a touch sensitive area;
an electrically insulative layer disposed on the electrically resistive layer, the insulative layer having open areas, each of the open areas exposing a portion of the resistive layer; and
a plurality of electrically conductive segments disposed on the insulative layer, each of the conductive segments making electrical contact with the resistive layer through at least one of the open areas in the insulative layer, wherein the plurality of electrically conductive segments improves linearity of the touch sensitive area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A touch sensor comprising:
-
an electrically resistive layer defining a touch sensitive area;
an electrically insulative layer disposed on the electrically resistive layer; and
a field linearization pattern disposed on the insulative layer and capable of improving a linearity of the touch sensitive area by making electrical contact with the resistive layer through one or more pre-existing openings in the insulative layer. - View Dependent Claims (18, 19, 20)
-
-
21. A touch sensor comprising:
-
an electrically resistive layer covering a touch sensitive area;
an electrically insulative layer disposed on the resistive layer; and
an electrically conductive linearization pattern disposed on the insulative layer, the linearization pattern making electrical contact with the resistive layer through the insulative layer at a plurality of random locations on the insulative layer, the linearization pattern improving a linearity of the touch sensitive area. - View Dependent Claims (22)
-
-
23. A method for making a touch sensor comprising the steps of:
-
providing an electrically resistive layer covering a touch sensitive area;
providing an electrically insulative layer on the electrically resistive layer, the insulative layer having one or more open areas exposing the electrically resistive layer; and
providing electrical contact between a field linearization pattern and the electrically resistive layer through at least some of the one or more open areas in the insulative area, the field linearization pattern being configured to improve a linearity of the touch sensitive area.
-
Specification