TOUCH PAD ELECTRODE DESIGN
First Claim
Patent Images
1. A capacitive touch sensor panel, comprising:
- a substrate formed from a dielectric material;
a first plurality of traces of conductive material located on a first layer of the substrate, each of the plurality of first traces comprising a first central trace arranged along a first dimension of a two-dimensional coordinate system and a plurality of first trace branches extending perpendicularly from the first central trace in a second dimension of the two-dimensional coordinate system; and
a second plurality of traces of the conductive material located on a second layer of the substrate, each of the second plurality of traces comprising a second central trace arranged along the second dimension and a plurality of second trace branches extending from the second central trace, at least some of the plurality of second trace branches comprising a first extension branch extending perpendicularly along the first dimension from one of the second central traces and at least one second extension branch extending perpendicularly along the second dimension from the first extension branch.
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Accused Products
Abstract
A multi-touch capacitive touch sensor panel can be created using a substrate with column and row traces formed on separate layers of the substrate. The column and row traces can include sections extending from a central trace and forming a rectilinear trace pattern with sections of the columns and rows interdigitated with one another. The trace pattern can comprise a plurality of pixels arranged continuously across the sensor panel. In this manner, the sensor panel can provide a linear or near linear response to touches across the touch sensor panel.
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Citations
22 Claims
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1. A capacitive touch sensor panel, comprising:
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a substrate formed from a dielectric material; a first plurality of traces of conductive material located on a first layer of the substrate, each of the plurality of first traces comprising a first central trace arranged along a first dimension of a two-dimensional coordinate system and a plurality of first trace branches extending perpendicularly from the first central trace in a second dimension of the two-dimensional coordinate system; and a second plurality of traces of the conductive material located on a second layer of the substrate, each of the second plurality of traces comprising a second central trace arranged along the second dimension and a plurality of second trace branches extending from the second central trace, at least some of the plurality of second trace branches comprising a first extension branch extending perpendicularly along the first dimension from one of the second central traces and at least one second extension branch extending perpendicularly along the second dimension from the first extension branch. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A capacitive touch sensor panel, comprising:
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sense traces formed on a dielectric substrate, each of the sense traces comprising a central sense trace arranged along a first dimension of a two-dimensional coordinate system and a plurality of extension sense traces extending perpendicularly from the central sense trace along a second dimension of the two-dimensional coordinate system; and drive traces formed on the substrate, each drive trace comprising a central drive trace arranged along the second dimension and a plurality of extension drive traces, wherein at least some of the plurality of extension drive traces include a first section of arranged along the third dimension. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A capacitive touch sensor panel, comprising:
a plurality of rectangular-shaped pixels arranged across a touch sensor panel;
wherein each pixel comprises;a sensing trace having a central sensing trace arranged along a first dimension of a two-coordinate system and a plurality of sensing braches extending perpendicularly from the central sensing trace; and a driving trace having a central driving trace arranged along a second dimension of a two-coordinate system and a plurality of driving braches extending from the central driving trace. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A mobile telephone having a capacitive touch sensor panel, the touch sensor panel comprising:
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a substrate formed from a dielectric material; a first plurality of traces of conductive material located on a first layer of the substrate, each of the plurality of first traces comprising a first central trace arranged along a first dimension of a two-dimensional coordinate system and a plurality of first trace branches extending perpendicularly from the first central trace in a second dimension of the two-dimensional coordinate system; and a second plurality of traces of the conductive material located on a second layer of the substrate, each of the second plurality of traces comprising a second central trace arranged along the second dimension and a plurality of second trace branches extending from the second central trace, at least some of the plurality of second trace branches comprising a first extension branch extending perpendicularly along the first dimension from one of the second central traces and at least one second extension branch extending perpendicularly along the second dimension from the first extension branch.
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22. A digital audio player having a capacitive touch sensor panel, the touch sensor panel comprising:
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a substrate formed from a dielectric material; a first plurality of traces of conductive material located on a first layer of the substrate, each of the plurality of first traces comprising a first central trace arranged along a first dimension of a two-dimensional coordinate system and a plurality of first trace branches extending perpendicularly from the first central trace in a second dimension of the two-dimensional coordinate system; and a second plurality of traces of the conductive material located on a second layer of the substrate, each of the second plurality of traces comprising a second central trace arranged along the second dimension and a plurality of second trace branches extending from the second central trace, at least some of the plurality of second trace branches comprising a first extension branch extending perpendicularly along the first dimension from one of the second central traces and at least one second extension branch extending perpendicularly along the second dimension from the first extension branch.
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Specification