Electrode layout for touch screens
First Claim
Patent Images
1. A touchscreen device comprising:
- a plurality of drive electrodes extending generally in a first direction, each of the drive electrodes comprising;
a plurality of diamond-shaped first portions, each diamond-shaped first portion connected to an adjacent diamond-shaped first portion in the first direction by at least one second portion extending from at least one end of each diamond-shaped first portion,wherein each of the plurality of diamond-shaped first portions comprises a first plurality of projections, each projection of the first plurality of projections extending orthogonally from a respective side of a respective one of the diamond-shaped first portions; and
a plurality of receive electrodes extending generally in a second direction transverse to the first direction, each of the receive electrodes comprising;
a bar extending generally in the second direction, the bar crossing over one second portion of each of the plurality of drive electrodes that connects adjacent diamond-shaped first portions in the first direction to form a uniform grid of diamond-shaped first portions of the plurality of drive electrodes,wherein the bar comprises a plurality of cross bars extending at regular intervals in opposite directions away from the bar in the first direction such that each of the plurality of cross bars is disposed above a diamond-shaped first portion of one of the plurality of drive electrodes, below a diamond-shaped first portion of one of the plurality of drive electrodes, or between diamond-shaped first portions of two of the plurality of drive electrodes; and
a second plurality of projections, each of the second plurality of projections extending from the bar and from each of the plurality of cross bars,wherein the bar, the plurality of cross bars, and the plurality of second projections form a snowflake pattern in the uniform grid of diamond-shaped first portions of the plurality of drive electrodes,wherein the second plurality of projections comprises a plurality of first pairs of projections, each of the first pairs of projections extending from a first side of the bar at regular intervals, a plurality of second pairs of projections, each of the second pairs of projections extending from a second side of the bar at regular intervals, a plurality of third pairs of projections, each of the third pairs of projections extending from opposite sides of each of a first plurality of the plurality of cross bars, and a plurality of fourth pairs of projections, each of the fourth pairs of projections extending from opposite sides of each of a second plurality of the plurality of cross bars, such that the first, second, third, and fourth pairs of projections are respectively disposed above respective diamond-shaped first portions of one of the plurality of drive electrodes, below respective diamond-shaped first portions of one of the plurality of drive electrodes, or between respective diamond-shaped first portions of two of the plurality of drive electrodes, and each projection of the first plurality of projections of each of the plurality of diamond-shaped first portions is interleaved between two projections of the second plurality of projections.
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Abstract
A device includes a plurality of drive electrodes and a plurality of sense electrodes. The drive electrodes run generally in a first direction and have multiple projections along their length. The sense electrodes run generally in a second direction transverse to the drive electrodes. The sense electrodes have multiple projections interleaved with the multiple projections of the drive electrodes.
50 Citations
25 Claims
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1. A touchscreen device comprising:
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a plurality of drive electrodes extending generally in a first direction, each of the drive electrodes comprising; a plurality of diamond-shaped first portions, each diamond-shaped first portion connected to an adjacent diamond-shaped first portion in the first direction by at least one second portion extending from at least one end of each diamond-shaped first portion, wherein each of the plurality of diamond-shaped first portions comprises a first plurality of projections, each projection of the first plurality of projections extending orthogonally from a respective side of a respective one of the diamond-shaped first portions; and a plurality of receive electrodes extending generally in a second direction transverse to the first direction, each of the receive electrodes comprising; a bar extending generally in the second direction, the bar crossing over one second portion of each of the plurality of drive electrodes that connects adjacent diamond-shaped first portions in the first direction to form a uniform grid of diamond-shaped first portions of the plurality of drive electrodes, wherein the bar comprises a plurality of cross bars extending at regular intervals in opposite directions away from the bar in the first direction such that each of the plurality of cross bars is disposed above a diamond-shaped first portion of one of the plurality of drive electrodes, below a diamond-shaped first portion of one of the plurality of drive electrodes, or between diamond-shaped first portions of two of the plurality of drive electrodes; and a second plurality of projections, each of the second plurality of projections extending from the bar and from each of the plurality of cross bars, wherein the bar, the plurality of cross bars, and the plurality of second projections form a snowflake pattern in the uniform grid of diamond-shaped first portions of the plurality of drive electrodes, wherein the second plurality of projections comprises a plurality of first pairs of projections, each of the first pairs of projections extending from a first side of the bar at regular intervals, a plurality of second pairs of projections, each of the second pairs of projections extending from a second side of the bar at regular intervals, a plurality of third pairs of projections, each of the third pairs of projections extending from opposite sides of each of a first plurality of the plurality of cross bars, and a plurality of fourth pairs of projections, each of the fourth pairs of projections extending from opposite sides of each of a second plurality of the plurality of cross bars, such that the first, second, third, and fourth pairs of projections are respectively disposed above respective diamond-shaped first portions of one of the plurality of drive electrodes, below respective diamond-shaped first portions of one of the plurality of drive electrodes, or between respective diamond-shaped first portions of two of the plurality of drive electrodes, and each projection of the first plurality of projections of each of the plurality of diamond-shaped first portions is interleaved between two projections of the second plurality of projections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A touchscreen device comprising:
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a plurality of drive electrodes extending generally in a first direction, each of the drive electrodes comprising; a plurality of diamond-shaped first portions, each diamond-shaped first portion connected to an adjacent diamond-shaped first portion in the first direction by at least one second portion extending from at least one end of each diamond-shaped first portion, wherein each of the plurality of diamond-shaped first portions comprises a first plurality of projections, each projection of the first plurality of projections extending orthogonally from a respective side of a respective one of the diamond-shaped first portions; and a plurality of receive electrodes extending generally in a second direction transverse to the first direction, each of the receive electrodes comprising; a bar extending generally in the second direction, the bar crossing over one second portion of each of the plurality of drive electrodes that connects adjacent diamond-shaped first portions in the first direction to form a uniform grid of diamond-shaped first portions of the plurality of drive electrodes, wherein the bar comprises a plurality of cross bars extending at regular intervals in opposite directions away from the bar in the first direction such that each of the plurality of cross bars is disposed above a diamond-shaped first portion of one of the plurality of drive electrodes, below a diamond-shaped first portion of one of the plurality of drive electrodes, or between diamond-shaped first portions of two of the plurality of drive electrodes; and a second plurality of projections, each of the second plurality of projections extending from the bar and from each of the plurality of cross bars, wherein the bar, the plurality of cross bars, and the plurality of second projections form a snowflake pattern in the uniform grid of diamond-shaped first portions of the plurality of drive electrodes, wherein the second plurality of projections comprises a plurality of first pairs of projections, each of the first pairs of projections extending from a first side of the bar at regular intervals, a plurality of second pairs of projections, each of the second pairs of projections extending from a second side of the bar at regular intervals, a plurality of third pairs of projections, each of the third pairs of projections extending from opposite sides of each of a first plurality of the plurality of cross bars, and a plurality of fourth pairs of projections, each of the fourth pairs of projections extending from opposite sides of each of a second plurality of the plurality of cross bars, such that the first, second, third, and fourth pairs of projections are respectively disposed above respective diamond-shaped first portions of one of the plurality of drive electrodes, below respective diamond-shaped first portions of one of the plurality of drive electrodes, or between respective diamond-shaped first portions of two of the plurality of drive electrodes, and each projection of the first plurality of projections of each of the plurality of diamond-shaped first portions is interleaved between two projections of the second plurality of projections, and wherein each of the first plurality of projections and each of the second plurality of projections has a same width. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A touchscreen device comprising:
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a plurality of drive electrodes extending generally in a first direction, each of the drive electrodes comprising; a plurality of diamond-shaped first portions, each diamond-shaped first portion connected to an adjacent diamond-shaped first portion in the first direction by at least one second portion extending from at least one end of each diamond-shaped first portion, wherein each of the plurality of diamond-shaped first portions comprises a first plurality of projections, each projection of the first plurality of projections extending orthogonally from a respective side of a respective one of the diamond-shaped first portions; a plurality of drive lines coupled to selected drive electrodes; a plurality of receive electrodes extending generally in a second direction transverse to the first direction, each of the receive electrodes comprising; a bar extending generally in the second direction, the bar crossing over one second portion of each of the plurality of drive electrodes that connects adjacent diamond-shaped first portions in the first direction to form a uniform grid of diamond-shaped first portions of the plurality of drive electrodes, wherein the bar comprises a plurality of cross bars extending at regular intervals in opposite directions away from the bar in the first direction such that each of the plurality of cross bars is disposed above a diamond-shaped first portion of one of the plurality of drive electrodes, below a diamond-shaped first portion of one of the plurality of drive electrodes, or between diamond-shaped first portions of two of the plurality of drive electrodes; and a second plurality of projections, each of the second plurality of projections extending from the bar and from each of the plurality of cross bars, wherein the bar, the plurality of cross bars, and the plurality of second projections form a snowflake pattern in the uniform grid of diamond-shaped first portions of the plurality of drive electrodes; a plurality of receive lines, each receive line respectively coupled to one of the receive electrodes; and a controller coupled to the plurality of drive lines and to the plurality of receive lines, wherein the second plurality of projections comprises a plurality of first pairs of projections, each of the first pairs of projections extending from a first side of the bar at regular intervals, a plurality of second pairs of projections, each of the second pairs of projections extending from a second side of the bar at regular intervals, a plurality of third pairs of projections, each of the third pairs of projections extending from opposite sides of each of a first plurality of the plurality of cross bars, and a plurality of fourth pairs of projections, each of the fourth pairs of projections extending from opposite sides of each of a second plurality of the plurality of cross bars, such that the first, second, third, and fourth pairs of projections are respectively disposed above respective diamond-shaped first portions of one of the plurality of drive electrodes, below respective diamond-shaped first portions of one of the plurality of drive electrodes, or between respective diamond-shaped first portions of two of the plurality of drive electrodes, and each projection of the first plurality of projections of each of the plurality of diamond-shaped first portions is interleaved between two projections of the second plurality of projections. - View Dependent Claims (17, 18, 19, 20)
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21. A touchscreen device comprising:
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a plurality of drive electrodes extending generally in a first direction, each of the drive electrodes comprising; a plurality of diamond-shaped first portions, each diamond-shaped first portion connected to an adjacent diamond-shaped first portion in the first direction by at least one second portion extending from at least one end of each diamond-shaped first portion, wherein each of the plurality of diamond-shaped first portions comprises a first plurality of projections, each projection of the first plurality of projections extending orthogonally from a respective side of a respective one of the diamond-shaped first portions; and a plurality of drive lines, each of the drive lines respectively coupled to one of the drive electrodes; a plurality of receive electrodes extending generally in a second direction transverse to the first direction, each of the receive electrodes comprising; a bar extending generally in the second direction, the bar crossing over one second portion of each of the plurality of drive electrodes that connects adjacent diamond-shaped first portions in the first direction to form a uniform grid of diamond-shaped first portions of the plurality of drive electrodes, wherein the bar comprises a plurality of cross bars extending at regular intervals in opposite directions away from the bar in the first direction such that each of the plurality of cross bars is disposed above a diamond-shaped first portion of one of the plurality of drive electrodes, below a diamond-shaped first portion of one of the plurality of drive electrodes, or between diamond-shaped first portions of two of the plurality of drive electrodes; and a second plurality of projections, each of the second plurality of projections extending from the bar and from each of the plurality of cross bars, wherein the bar, the plurality of cross bars, and the plurality of second projections form a snowflake pattern in the uniform grid of diamond-shaped first portions of the plurality of drive electrodes; a plurality of receive lines coupled to selected receive electrodes; and a controller coupled to the plurality of drive lines and to the plurality of receive lines, wherein the second plurality of projections comprises a plurality of first pairs of projections, each of the first pairs of projections extending from a first side of the bar at regular intervals, a plurality of second pairs of projections, each of the second pairs of projections extending from a second side of the bar at regular intervals, a plurality of third pairs of projections, each of the third pairs of projections extending from opposite sides of each of a first plurality of the plurality of cross bars, and a plurality of fourth pairs of projections, each of the fourth pairs of projections extending from opposite sides of each of a second plurality of the plurality of cross bars, such that the first, second, third, and fourth pairs of projections are respectively disposed above respective diamond-shaped first portions of one of the plurality of drive electrodes, below respective diamond-shaped first portions of one of the plurality of drive electrodes, or between respective diamond-shaped first portions of two of the plurality of drive electrodes, and each projection of the first plurality of projections of each of the plurality of diamond-shaped first portions is interleaved between two projections of the second plurality of projections. - View Dependent Claims (22, 23, 24, 25)
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Specification