TOUCH SCREEN WITH IMPROVED OPTICAL PERFORMACE
First Claim
1. A touch screen comprising:
- a plurality of conductive traces formed on a surface with a space between at least two of the plurality of conductive traces;
a plurality of isolated regions that substantially fills the space between the at least two conductive traces where the plurality of isolated regions are formed of the same material as the conductive traces; and
wherein the plurality of isolated regions are formed in a pattern, where the pattern creates a space between adjacent ITO regions that is non-linear across the space between the at least two conductive traces.
2 Assignments
0 Petitions
Accused Products
Abstract
An improved touch screen has enhanced optical performance and aesthetic quality. The sense electrodes and other traces on the touch screen are made less invisible to the user by substantially filling the space between the conductive traces or electrodes with isolated regions that match the light transmission characteristics of the electrodes. In capacitive and resistive touch screens, the space between ITO electrodes and other traces on the substrate is substantially filled with ITO to match the electrodes. The space between electrodes is preferably filled with isolated regions of ITO formed in a pattern. The isolated regions in the pattern may be shaped and the electrodes notched to create non-linear spaces to further reduce the visibility of the pattern. Further, the space between ITO traces can be filled with irregular-shaped ITO regions to further reduce the visibility of the space.
35 Citations
16 Claims
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1. A touch screen comprising:
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a plurality of conductive traces formed on a surface with a space between at least two of the plurality of conductive traces; a plurality of isolated regions that substantially fills the space between the at least two conductive traces where the plurality of isolated regions are formed of the same material as the conductive traces; and wherein the plurality of isolated regions are formed in a pattern, where the pattern creates a space between adjacent ITO regions that is non-linear across the space between the at least two conductive traces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A touch screen comprising:
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a plurality of conductive traces formed of indium tin oxide (ITO) on a surface with a space between at least two of the plurality of conductive traces; a plurality of isolated regions that substantially fills the space between the at least two conductive traces where the plurality of isolated regions are irregularly-shaped and formed of indium tin oxide (ITO); and wherein the plurality of isolated regions are formed in a pattern, where the pattern creates a space between adjacent ITO regions that is non-linear across the space between the at least two conductive traces; and wherein the at least two conductive traces include notches in at least one edge to match the pattern of the isolated regions and the isolated regions are integrated into the notches.
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10. A resistive touch screen comprising:
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a plurality of conductive traces formed on a glass surface of the resistive touch screen with a space between at least two of the plurality of conductive traces; and a plurality of isolated regions that substantially fills the space between the at least two conductive traces where the plurality of isolated regions are formed of the same material as the conductive traces. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification