Index Matching For Touch Screens
First Claim
1. An index matching stackup for a touch screen, the stackup comprising:
- a substantially transparent substrate;
a substantially transparent conductive layer disposed over the substrate in a pattern; and
an index matching layer disposed over the conductive layer for improving an optical uniformity of the touch screen, wherein the index matching layer also passivates the conductive layer.
1 Assignment
0 Petitions
Accused Products
Abstract
Index matching for touch screens is provided. An index matching stackup for a touch screen can be formed including a substantially transparent substrate, a substantially transparent conductive layer disposed in a pattern, and an index matching layer for improving an optical uniformity of the touch screen. The index matching layer can also be designed to operate as a dual-function layer. In one dual-function design, the index matching layer design performs both index matching and passivating the conductive layer. In another dual-function design, the index matching layer performs both index matching and adhesion of layers. The index matching layer can also be designed to serve all three functions of index matching, passivating, and adhering.
83 Citations
39 Claims
-
1. An index matching stackup for a touch screen, the stackup comprising:
-
a substantially transparent substrate; a substantially transparent conductive layer disposed over the substrate in a pattern; and an index matching layer disposed over the conductive layer for improving an optical uniformity of the touch screen, wherein the index matching layer also passivates the conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of manufacturing an index matching stackup for a touch screen, the method comprising:
-
forming a substantially transparent conductive layer on a substantially transparent substrate; patterning the conductive layer to form one of a plurality of drive lines and a plurality of sense lines; and forming an index matching layer with the patterned conductive layer and the substrate for improving an optical uniformity of the touch screen. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. An index matching stackup for a touch screen, the stackup comprising:
-
one or more layers of substantially transparent conductive material forming a plurality of drive lines and a plurality of sense lines; and an index matching layer abutting one of the plurality of drive lines and the plurality of sense lines. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A method of manufacturing a touch screen, the method comprising:
-
forming an index matching layer on a substantially transparent substrate; forming a substantially conductive layer on the index matching layer; and patterning the conductive layer to form one of a plurality of drive lines and plurality of sense lines. - View Dependent Claims (32, 33)
-
-
34. An index matching stackup for a touch screen, the stackup comprising:
-
a substrate; a substantially transparent conductive layer formed in a pattern on the substrate; and a pressure sensitive adhesive that matches an index of refraction of the conductive layer to reduce a visibility of the pattern. - View Dependent Claims (35, 36)
-
-
37. A mobile telephone including an index matching stackup comprising:
-
a substantially transparent substrate; a substantially transparent conductive layer disposed over the substrate in a pattern; and an index matching layer disposed over the conductive layer for improving an optical uniformity of the touch screen, wherein the index matching layer also passivates the conductive layer.
-
-
38. A digital media player including an index matching stackup comprising:
-
a substantially transparent substrate; a substantially transparent conductive layer disposed over the substrate in a pattern; and an index matching layer disposed over the conductive layer for improving an optical uniformity of the touch screen, wherein the index matching layer also passivates the conductive layer.
-
-
39. A personal computer including an index matching stackup comprising:
-
a substantially transparent substrate; a substantially transparent conductive layer disposed over the substrate in a pattern; and an index matching layer disposed over the conductive layer for improving an optical uniformity of the touch screen, wherein the index matching layer also passivates the conductive layer.
-
Specification