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US 8,797,290 B2Granted
Sense electrode spine interpolation
AssigneeAtmel Corporation
InventorEsat Yilmaz
Life of this patent
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Abstract
An electrode layout for a touchscreen includes multiple sense electrodes. Each sense electrode has multiple spines coupled to each other, including a main spine and at least one spaced apart interpolation spine running in the same direction. The interpolation spine of one sense electrode is positioned adjacent a spaced apart interpolation spine of a neighboring sense electrode to provide interpolated sense electrodes.
Claims23
A device comprising:
- a plurality of drive electrodes extending in a first direction;
- a first sense electrode extending in a second direction, the first sense electrode comprising:
- a first main spine extending in the second direction and adapted to be electrically coupled to control electronics by a first sense line;
- and
- a first plurality of interpolation spines extending in the second direction, the first plurality of interpolation spines being electrically coupled to the first main spine by the first sense line, each interpolation spine of the first plurality of interpolation spines overlapping multiple drive electrodes of the plurality of drive electrodes;
- a second sense electrode extending in the second direction and located adjacent to the first sense electrode, the second sense electrode comprising:
- a second main spine extending in the second direction and adapted to be electrically coupled to the control electronics by a second sense line;
- and
- a second plurality of interpolation spines extending in the second direction, the second plurality of interpolation spines being electrically coupled to the second main spine by the second sense line;
- wherein:
- none of the first plurality of interpolation spines of the first sense electrode is located between any one of the second plurality of interpolation spines and the second main spine;
- and
- none of the second plurality of interpolation spines of the second sense electrode is located between any one of the first plurality of interpolation spines and the first main spine.
10 more elements
A device comprising:
- a drive electrode layer comprising a plurality of drive electrodes running in a first direction;
- a dielectric layer;
- and
- a sense electrode layer separated from the drive electrode layer by the dielectric layer, the sense electrode layer comprising a first sense electrode and a second sense electrode each wherein:
- the first sense electrode comprises:
- a first main spine extending in the second direction and adapted to be coupled to control electronics by a first sense line;
- and
- a first plurality of interpolation spines extending in the second direction, the first plurality of interpolation spines being electrically coupled to the first main spine by the first sense line, each interpolation spine of the first plurality of interpolation spines overlapping multiple drive electrodes of the plurality of drive electrodes;
- the second sense electrode comprises:
- a second main spine extending in the second direction and adapted to e electrically coupled to the control electronics by a second sense line;
- and
- a second plurality of interpolation spines extending in the second direction, the second plurality of interpolation spines being electrically coupled to the second main spine by the second sense line;
- none of the first plurality of interpolation spines of the first sense electrode is located between any one of the second plurality of interpolation spines and the second main spine;
- and
- none of the second plurality of interpolation spines of the second sense electrode is located between any one of the first plurality of interpolation spines and the first main spine.
12 more elements
A method comprising:
- forming a plurality of drive electrodes over a display device, the drive electrodes arranged in a solid fill pattern and running in a first direction;
- forming first and second sense electrodes separated from the plurality of drive electrodes, the first and second sense electrodes running in a second direction transverse to the first direction, wherein:
- the first sense electrode comprises:
- a first main spine extending in the second direction and adapted to be electrically coupled to control electronics by a first sense line;
- and
- a first plurality of interpolation spines extending in the second direction, the first plurality of interpolation spines being electrically coupled to the first main spine by the first sense line, each interpolation spine of the first plurality of interpolation spines overlapping multiple drive electrodes of the plurality of drive electrodes;
- the second sense electrode comprises:
- a second main spine extending in the second direction and adapted to be electrically coupled to the control electronics by a second sense line;
- and
- a second plurality of interpolation spines extending in the second direction, the second plurality of interpolation spines being electrically coupled to the second main spine by the second sense line;
- none of the first plurality of interpolation spines of the first sense electrode is located between any one of the second plurality of interpolation spines and the second main spine;
- and
- none of the second plurality of interpolation spines of the second sense electrode is located between any one of the first plurality of interpolation spines and the first main spine.
10 more elements
Dependencies are inferred from the claim text.