TOUCH-SENSOR ELECTRODE DETAILS
In one embodiment, a touch sensor includes a drive electrode and a sense electrode. The sense electrode is separated from the drive electrode by a gap having a width, and the width of the gap is substantially uniform throughout the entire extent of the gap.
1 . A touch sensor comprising:
a drive electrode; and
a sense electrode that is separated from the drive electrode by a gap having a width, wherein the width of the gap is substantially uniform throughout an entire extent of the gap.
2 . The touch sensor of claim 1 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises one or more curved segments.
3 . The touch sensor of claim 1 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises one or more chamfered segments.
4 . The touch sensor of claim 1 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises a plurality of connected straight-line segments.
5 . The touch sensor of claim 1 , wherein:
the drive electrode comprises one or more drive electrode projections;
the sense electrode comprises one or more sense electrode projections; and
one or more drive electrode projections are interdigitated with one or more sense electrode projections.
6 . The touch sensor of claim 1 , wherein the width of the gap is approximately 100 μm throughout the entire extent of the gap.
7 . The touch sensor of claim 1 , wherein the width of the gap varies by less than approximately 10% throughout the entire extent of the gap.
8 . The touch sensor of claim 1 , wherein the electrodes have a snowflake shape.
9 . A device comprising:
a touch sensor comprising:
a drive electrode; and
a sense electrode that is separated from the drive electrode by a gap having a width, wherein the width of the gap is substantially uniform throughout an entire extent of the gap; and
a computer-readable non-transitory storage medium embodying logic that is configured when executed to control the touch sensor.
10 . The device of claim 9 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises one or more curved segments.
11 . The device of claim 9 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises one or more chamfered segments.
12 . The device of claim 9 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises a plurality of connected straight-line segments.
13 . The device of claim 9 , wherein:
the drive electrode comprises one or more drive electrode projections;
the sense electrode comprises one or more sense electrode projections; and
one or more drive electrode projections are interdigitated with one or more sense electrode projections.
14 . The device of claim 9 , wherein the width of the gap is approximately 100 μm throughout the entire extent of the gap.
15 . The device of claim 9 , wherein the width of the gap varies by less than approximately 10% throughout the entire extent of the gap.
16 . A method comprising:
depositing conductive material on a substrate; and
patterning the conductive material to form a drive electrode and a sense electrode that is separated from the drive electrode by a gap having a width, wherein the width of the gap is substantially uniform throughout an entire extent of the gap.
17 . The method of claim 16 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises one or more curved segments.
18 . The method of claim 16 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises one or more chamfered segments.
19 . The method of claim 16 , wherein:
the drive and sense electrodes each comprise a border that faces the gap; and
each border comprises a plurality of connected straight-line segments.
20 . The method of claim 16 , wherein:
the drive electrode comprises one or more drive electrode projections;
the sense electrode comprises one or more sense electrode projections; and
one or more drive electrode projections are interdigitated with one or more sense electrode projections.