Touch sensitive displays with layers of sensor plates providing capacitance based proximity sensing and related touch panels
First Claim
1. An electronic touch panel comprising:
- a plurality of spaced apart first sensor plates arranged in a first direction on a first planar layer;
a plurality of second sensor plates arranged in a second direction on a second planar layer;
a proximity sensor plate that is spaced apart from and attached to the first planar layer, wherein the proximity sensor plate has a greater surface area than the plurality of the first sensor plates and the plurality of the second sensor plates, wherein the proximity sensor plate comprises a metallic reflector layer, and wherein the metallic reflector layer extends beneath at least a majority of the first and second sensor plates; and
a position detection circuit that is configured to electrically charge the first sensor plates to generate capacitive coupling to an adjacent user object and detect therefrom a location of the user object relative to the first direction across the first planar layer, and configured to electrically charge the proximity sensor plate to generate a higher level of capacitive coupling to the user object than a plurality of the first sensor plates and to detect therefrom a proximity of the user object relative to a direction away from the first planar layer.
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Accused Products
Abstract
An electronic touch panel includes a plurality of spaced apart first sensor plates that are arranged in a first direction on a first planar layer. A proximity sensor plate is spaced apart from and attached to the first planar layer. The proximity sensor plate has a greater surface area than a plurality of the first sensor plates. A position detection circuit is configured to electrically charge the first sensor plates to generate capacitive coupling to an adjacent user object and to detect therefrom a location of the user object relative to the first direction across the first planar layer. The position detection circuit is further configured to electrically charge the proximity sensor plate to generate a higher level of capacitive coupling to the user object than a plurality of the first sensor plates and to detect therefrom a proximity of the user object relative to a direction away from the first planar layer.
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Citations
20 Claims
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1. An electronic touch panel comprising:
- a plurality of spaced apart first sensor plates arranged in a first direction on a first planar layer;
a plurality of second sensor plates arranged in a second direction on a second planar layer; a proximity sensor plate that is spaced apart from and attached to the first planar layer, wherein the proximity sensor plate has a greater surface area than the plurality of the first sensor plates and the plurality of the second sensor plates, wherein the proximity sensor plate comprises a metallic reflector layer, and wherein the metallic reflector layer extends beneath at least a majority of the first and second sensor plates; and a position detection circuit that is configured to electrically charge the first sensor plates to generate capacitive coupling to an adjacent user object and detect therefrom a location of the user object relative to the first direction across the first planar layer, and configured to electrically charge the proximity sensor plate to generate a higher level of capacitive coupling to the user object than a plurality of the first sensor plates and to detect therefrom a proximity of the user object relative to a direction away from the first planar layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- a plurality of spaced apart first sensor plates arranged in a first direction on a first planar layer;
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19. A touch sensitive display comprising:
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an image rendering layer that is configured to control light transmissivity through pixel locations therein responsive to a display control signal; a metallic reflector layer that is configured to direct light through the image rendering layer; a plurality of first sensor plates that are arranged in a plurality of spaced apart columns on a first layer between the image rendering layer and the metallic reflector layer, wherein each of the first sensor plates are spaced apart and serially connected in each column and are electrically isolated from first sensor plates in other columns; a plurality of second sensor plates that are arranged in a plurality of spaced apart rows on a second layer between the first layer and the metallic reflector layer, wherein each of the second sensor plates are spaced apart and serially connected in each row and are electrically isolated from the second sensor plates in other rows, wherein the metallic reflector layer extends beneath at least a majority of the first and second sensor plates; and a position detection circuit that is configured to electrically charge the first sensor plates, the second sensor plates, and the metallic reflector layer to generate capacitive coupling to an adjacent user object and detect therefrom a location of the user object relative to the columns of first sensor plates, relative to the rows of second sensor plates, and relative to the metallic reflector layer in a direction away from the columns and rows of the first and second sensor plates. - View Dependent Claims (20)
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Specification