Inductive touch screen and methods for use therewith
First Claim
Patent Images
1. An inductive touch screen comprising:
- a display layer for displaying information of the inductive touch screen;
an inductor grid, coupled to the display layer, that includes a plurality of inductive elements arranged on a single layer;
at least one switch matrix, coupled to the inductor grid, that selects a selected one of the plurality of inductive elements in response to at least one selection signal;
a driver, coupled to the at least one switch matrix and the inductor grid, that generates the at least one selection signal and that drives the selected one of the plurality of inductive elements to detect a touch object in proximity to the selected one of the plurality of inductive elements and that generates touch screen data in response thereto, wherein the driver detects the touch object in proximity to the selected one of the plurality of inductive elements based on a measured self inductance of a single inductor.
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Abstract
A touch screen includes a display layer for displaying information. An inductor grid includes a plurality of inductive elements arranged on a single layer. At least one switch matrix selects an inductive element in response to the selection signal. A driver generates the selection signal, drives the selected inductive element to detect a touch object in proximity to the selected inductive element and generates touch screen data in response thereto.
30 Citations
20 Claims
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1. An inductive touch screen comprising:
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a display layer for displaying information of the inductive touch screen; an inductor grid, coupled to the display layer, that includes a plurality of inductive elements arranged on a single layer; at least one switch matrix, coupled to the inductor grid, that selects a selected one of the plurality of inductive elements in response to at least one selection signal; a driver, coupled to the at least one switch matrix and the inductor grid, that generates the at least one selection signal and that drives the selected one of the plurality of inductive elements to detect a touch object in proximity to the selected one of the plurality of inductive elements and that generates touch screen data in response thereto, wherein the driver detects the touch object in proximity to the selected one of the plurality of inductive elements based on a measured self inductance of a single inductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for use in an inductive touch screen, the method comprising:
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displaying information via a display layer of the inductive touch screen; generating at least one selection signal; selecting, in response to the at least one selection signal, a selected one of a plurality of inductive elements arranged on a single layer; driving the selected one of the plurality of inductive elements; detecting a touch object in proximity to the selected one of the plurality of inductive elements based on a measured self inductance of a single inductor; and generating touch screen data in response to detecting the touch object in proximity to the selected one of the plurality of inductive elements. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification