Touch sensitive screen configurations
First Claim
Patent Images
1. A touch sensitive screen comprising:
- at least one insulator;
first and second pluralities of electrodes separated by the at least one insulator, the plurality of first electrodes bring arranged in a first direction, and the plurality of second electrodes being arranged in a second direction different from the first direction such that the first and second electrodes cross over each other to form touch sensing nodes;
a controller configured to supply signals to and receive signals from electrodes;
a first plurality of channels connecting the first electrodes to the controller;
a second plurality of channels connecting the second electrodes to the controller, wherein;
each of the second electrodes comprises a first section and a second section, the first section being collinear with, and electrically insulated from, the second section,wherein the first section of each second electrode is connected to a first one of the plurality of the second channels and the second section of each second electrode is connected to a second one of the plurality of second channels that is different from the first one of the plurality of second channels,wherein the controller is further configured to compensate for the first section of each second electrode being connected to a different one of the plurality of second channels than the second section of each second electrode when determining a position of a touch at the touch sensitive screen by reordering signals from the second electrodes by associating each second one of the plurality of second channels with a respective first one of the plurality of second channels, each associated first one and second one of the plurality of the second channels connected to a respective first section and second section having the same distance from an edge of the touch sensitive area.
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Abstract
Examples of arrangements of electrodes on a touch sensitive screen provide one or more advantages, such as reduced cross coupling, for example, when a person is using both thumbs or several fingers at substantially the same time to control the touch screen.
21 Citations
7 Claims
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1. A touch sensitive screen comprising:
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at least one insulator; first and second pluralities of electrodes separated by the at least one insulator, the plurality of first electrodes bring arranged in a first direction, and the plurality of second electrodes being arranged in a second direction different from the first direction such that the first and second electrodes cross over each other to form touch sensing nodes; a controller configured to supply signals to and receive signals from electrodes; a first plurality of channels connecting the first electrodes to the controller; a second plurality of channels connecting the second electrodes to the controller, wherein; each of the second electrodes comprises a first section and a second section, the first section being collinear with, and electrically insulated from, the second section, wherein the first section of each second electrode is connected to a first one of the plurality of the second channels and the second section of each second electrode is connected to a second one of the plurality of second channels that is different from the first one of the plurality of second channels, wherein the controller is further configured to compensate for the first section of each second electrode being connected to a different one of the plurality of second channels than the second section of each second electrode when determining a position of a touch at the touch sensitive screen by reordering signals from the second electrodes by associating each second one of the plurality of second channels with a respective first one of the plurality of second channels, each associated first one and second one of the plurality of the second channels connected to a respective first section and second section having the same distance from an edge of the touch sensitive area. - View Dependent Claims (2, 3, 4)
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5. A touch sensitive screen comprising:
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a plurality of drive electrodes provided on the at least one substrate, each drive electrode connected to a drive channel; and a plurality of sense electrodes provided on the at least one substrate, wherein; a plurality of capacitive sensing nodes are formed at intersections of the drive electrodes and the sense electrodes, each sense electrode comprises a first electrode and a second electrode, the first electrode being collinear with, and electrically insulated from, the second electrode wherein the first electrode of each sense electrode is connected to a first of a plurality of sense channels and the second electrode of each sense electrode is connected to a second of the plurality of sense channels that is different from the first of the plurality of sense channels; and a controller configured to supply drive signals to the drive channels, receive sense signals from the first and second sense channels, to compensate for the first electrode of each sense electrode being connected to a different one of the sense channels than the second electrode of each second electrode, and to determine a position of a touch at the touch sensitive screen by reordering signals from the second electrodes by associating each second one of the plurality of sense channels with a respective first one of the plurality of sense channels, each associated first and second of the plurality of the sense channels connected to a respective first electrode and second electrode having the same distance from an edge of the touch sensitive area. - View Dependent Claims (6, 7)
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Specification