Single layer touch sensor
First Claim
1. A capacitance sensing device comprising:
- a plurality of electrodes disposed on a central portion of a substrate;
a first plurality of conductors disposed on the substrate in a first direction, each of the first plurality of conductors having a first end portion electrically connected to one of the plurality of electrodes and a second end portion that extends into an outer portion of the substrate, wherein the first end portions and the second end portions of the first plurality of conductors are made of a first conductive material, have substantially the same thickness, and lay in substantially the same plane;
a second plurality of conductors disposed on the outer portion of the substrate in a second direction different from the first direction, wherein;
each of the second plurality of conductors passes over one or more of the first plurality of conductors,the second plurality of conductors are made of a second conductive material distinct from the first conductive material, andthe respective second end portion of each of the first plurality of conductors includes a respective extension disposed in the second direction, the respective extension forming an electrical connection with a respective one of the second plurality of conductors; and
a single dielectric layer disposed above the first plurality of conductors in the outer portion of the substrate, selectively insulating the first plurality of conductors from the second plurality of conductors, wherein the single dielectric layer is an island that has a polygonal shape without holes whose width varies according to a corresponding distance from the central portion of the substrate and for each respective conductor of the first plurality of conductors;
the single dielectric layer is not disposed over a respective portion of the respective conductor where a respective corresponding conductor of the second plurality of conductors passes over the respective conductor, thereby creating an electrical connection between the respective conductor and the respective corresponding conductor without a conductive via; and
the single dielectric layer insulates the respective conductor from the other conductors in the second plurality of conductors in areas where the other conductors pass over the respective conductor.
6 Assignments
0 Petitions
Accused Products
Abstract
Embodiments described herein provide capacitance sensing devices and methods for forming such devices. The capacitance sensing devices include a substrate having a central and an outer portion. A plurality of substantially co-planar electrodes are on the central portion substrate. A first plurality of conductors are on the substrate. Each of the first plurality of conductors has a first end portion electrically connected to one of the plurality of electrodes and a second end portion on the outer portion of the substrate. An insulating material is coupled to the second end portions of the first plurality of conductors. A second plurality of conductors are coupled to the insulating material. Each of the second plurality of conductors is electrically connected to the second end portion of at least some of the first plurality of conductors and is insulated from the second end portion of the others of the first plurality of conductors.
-
Citations
12 Claims
-
1. A capacitance sensing device comprising:
-
a plurality of electrodes disposed on a central portion of a substrate; a first plurality of conductors disposed on the substrate in a first direction, each of the first plurality of conductors having a first end portion electrically connected to one of the plurality of electrodes and a second end portion that extends into an outer portion of the substrate, wherein the first end portions and the second end portions of the first plurality of conductors are made of a first conductive material, have substantially the same thickness, and lay in substantially the same plane; a second plurality of conductors disposed on the outer portion of the substrate in a second direction different from the first direction, wherein; each of the second plurality of conductors passes over one or more of the first plurality of conductors, the second plurality of conductors are made of a second conductive material distinct from the first conductive material, and the respective second end portion of each of the first plurality of conductors includes a respective extension disposed in the second direction, the respective extension forming an electrical connection with a respective one of the second plurality of conductors; and a single dielectric layer disposed above the first plurality of conductors in the outer portion of the substrate, selectively insulating the first plurality of conductors from the second plurality of conductors, wherein the single dielectric layer is an island that has a polygonal shape without holes whose width varies according to a corresponding distance from the central portion of the substrate and for each respective conductor of the first plurality of conductors; the single dielectric layer is not disposed over a respective portion of the respective conductor where a respective corresponding conductor of the second plurality of conductors passes over the respective conductor, thereby creating an electrical connection between the respective conductor and the respective corresponding conductor without a conductive via; and the single dielectric layer insulates the respective conductor from the other conductors in the second plurality of conductors in areas where the other conductors pass over the respective conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification