Offset sensor pattern
First Claim
1. A capacitive sensor array, comprising:
- a first plurality of column sensor electrodes, wherein for each column sensor electrode of the plurality of column sensor electrodes, the column sensor electrode comprises a main trace extending a length of the column sensor electrode; and
a second plurality of row sensor electrodes, wherein each of the first plurality of column sensor electrodes is capacitively coupled with at least two of the second plurality of row sensor electrodes to form a plurality of unit cells, wherein for each unit cell of the plurality of unit cells, the unit cell is associated with a unique pairing of one of the row sensor electrodes and one of the column sensor electrodes, and the unit cell includes an intensity center located at a point of greatest capacitance sensitivity between the row electrode and the column electrode of the unique pairing, wherein for each row sensor electrode of the plurality of row sensor electrodes, the row sensor electrode comprises a plurality of electrically connected portions each within a different one of the plurality of unit cells, wherein a first portion of the plurality of portions has a different shape than a second portion of the plurality of portions, wherein an axis of the row sensor electrode crosses each of the electrically connected portions of the row sensor electrode, wherein the intensity centers associated with the electrically connected portions of the row sensor electrode are staggered on alternating sides of the axis, and wherein for each unit cell of the plurality of unit cells, a distance between the intensity center of the unit cell and a nearest intensity center of another unit cell that is located at a perimeter of the unit cell is at least 0.7 times a height of the unit cell, wherein the height of the unit cell is measured in a direction of the axis of the column sensor electrode associated with the unit cell.
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Accused Products
Abstract
A capacitive sensor array may comprise a plurality of column sensor electrodes and a plurality of row sensor electrodes. The column sensor electrodes may be capacitively coupled with the row sensor electrodes to form a plurality of unit cells each including an intensity center identifying a location of greatest capacitance sensitivity between a row electrode and a column electrode. An axis of a set of row sensor electrodes may cross at least a portion of each row electrode in the set, and the intensity centers associated with the row electrodes in the set may be staggered on alternating sides of the axis. For each of the plurality of unit cells, a distance between the intensity center of the unit cell and a nearest intensity center of another unit cell at a perimeter of the unit cell may be at least 0.7 times the height of the unit cell.
36 Citations
12 Claims
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1. A capacitive sensor array, comprising:
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a first plurality of column sensor electrodes, wherein for each column sensor electrode of the plurality of column sensor electrodes, the column sensor electrode comprises a main trace extending a length of the column sensor electrode; and a second plurality of row sensor electrodes, wherein each of the first plurality of column sensor electrodes is capacitively coupled with at least two of the second plurality of row sensor electrodes to form a plurality of unit cells, wherein for each unit cell of the plurality of unit cells, the unit cell is associated with a unique pairing of one of the row sensor electrodes and one of the column sensor electrodes, and the unit cell includes an intensity center located at a point of greatest capacitance sensitivity between the row electrode and the column electrode of the unique pairing, wherein for each row sensor electrode of the plurality of row sensor electrodes, the row sensor electrode comprises a plurality of electrically connected portions each within a different one of the plurality of unit cells, wherein a first portion of the plurality of portions has a different shape than a second portion of the plurality of portions, wherein an axis of the row sensor electrode crosses each of the electrically connected portions of the row sensor electrode, wherein the intensity centers associated with the electrically connected portions of the row sensor electrode are staggered on alternating sides of the axis, and wherein for each unit cell of the plurality of unit cells, a distance between the intensity center of the unit cell and a nearest intensity center of another unit cell that is located at a perimeter of the unit cell is at least 0.7 times a height of the unit cell, wherein the height of the unit cell is measured in a direction of the axis of the column sensor electrode associated with the unit cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A capacitance sensing system, comprising:
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a capacitance sensor; a first plurality of column sensor electrodes of a capacitive sensor array coupled with the capacitance sensor, wherein for each column sensor electrode of the plurality of column sensor electrodes, the column sensor electrode comprises a main trace extending a length of the column sensor electrode; a second plurality of row sensor electrodes of the capacitive sensor array, wherein each of the first plurality of column sensor electrodes is capacitively coupled with at least two of the second plurality of row sensor electrodes to form a plurality of unit cells, wherein for each unit cell of the plurality of unit cells, the unit cell is associated with a unique pairing of one of the row sensor electrodes and one of the column sensor electrodes, and the unit cell includes an intensity center located at a point of greatest capacitance sensitivity between the row electrode and the column electrode of the unique pairing, wherein for each row sensor electrode of the plurality of row sensor electrodes, the row sensor electrode comprises a plurality of electrically connected portions each within a different one of the plurality of unit cells, wherein a first portion of the plurality of portions has a different shape than a second portion of the plurality of portions, wherein an axis of the row sensor electrode crosses at each of the electrically connected portions of the row sensor electrode, wherein the intensity centers associated with the electrically connected portions of the row sensor electrode are staggered on alternating sides of the axis, and wherein for each unit cell of the plurality of unit cells, a distance between the intensity center of the unit cell and a nearest intensity center of another unit cell that is located at a perimeter of the unit cell is at least 0.7 times the height of the unit cell, wherein the height of the unit cell is measured in the direction of the axis of the column sensor electrode associated with the unit cell. - View Dependent Claims (11, 12)
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Specification