TOUCH SCREEN DISPLAY UNIFORMITY
First Claim
1. A touch screen comprising:
- a plurality of common electrodes formed of a first conductive material;
a plurality of dummy features, including;
a set of primary-dummy features formed of a second conductive material, anda set of supplementary-dummy features formed of a third conductive material;
wherein;
at least one of the primary-dummy features is disposed so as to overlap with one or more gaps between the plurality of common electrodes, andat least one of the supplementary-dummy features is disposed so as to make a distance between one or more adjacent pairs of the plurality of dummy features equal in a first direction.
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Accused Products
Abstract
Improvement of visual uniformity of an integrated touch screen display is provided. A touch screen can include common electrodes separated by gaps in a Vcom layer. To improve visual non-uniformity in the display resulting from the gaps, a first set of semi-transparent dummy features (primary-dummy features) can be formed on a second layer at the locations of the gaps, and a second set of dummy features (supplementary-dummy features) can also be formed on the second layer or another layer to mitigate low spatial resolution of the primary-dummy features and/or non-uniform spacing of the primary-dummy features. In some examples, holes or slits can be formed in the Vcom layer at areas of the supplementary-dummy features to further improve visual uniformity.
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Citations
32 Claims
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1. A touch screen comprising:
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a plurality of common electrodes formed of a first conductive material; a plurality of dummy features, including; a set of primary-dummy features formed of a second conductive material, and a set of supplementary-dummy features formed of a third conductive material; wherein; at least one of the primary-dummy features is disposed so as to overlap with one or more gaps between the plurality of common electrodes, and at least one of the supplementary-dummy features is disposed so as to make a distance between one or more adjacent pairs of the plurality of dummy features equal in a first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of forming a touch screen, comprising:
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on a first layer, depositing a first conductive material to form a plurality of common electrodes; on a second layer, depositing a second conductive material to form a set of primary-dummy features; on the second layer, depositing a third conductive material to form a set of supplementary-dummy features parallel to the primary-dummy features; wherein; each of the primary-dummy features is disposed over one or more gaps between the plurality of common electrodes, and each of the supplementary-dummy features is disposed over at least a portion of the common electrodes. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification