Pressure-sensitive multi-touch device
First Claim
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1. A pressure-sensitive multi-touch device configured to detect one or more touch inputs, the multi-touch device comprising:
- a first layer comprising a plurality of columns;
a second layer comprising a plurality of rows, the second layer opposing the first layer;
a pressure-sensitive cell at each intersection of a column and a row, each pressure-sensitive cell configured to change a resistance of the cell inversely proportional to an amount of force applied to that cell; and
a spacer assembly between pressure-sensitive cells, the spacer assembly comprising an island having approximately a same height as each of the plurality of columns, a land having approximately a same height as each of the plurality of rows, and a spacer between the island and the land, the spacer sized to span a distance between the island and the land in the absence of an external applied force and to separate the column from the row at adjacent pressure-sensitive cells in the absence of an external applied force.
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Abstract
A pressure-sensitive multi-touch device is provided. The multi-touch device includes a matrix of pressure-sensitive cells, each pressure-sensitive cell configured to change a resistance of the cell inversely proportional to an amount of force applied to that cell. The multi-touch device further includes a spacer assembly between pressure-sensitive cells.
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Citations
20 Claims
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1. A pressure-sensitive multi-touch device configured to detect one or more touch inputs, the multi-touch device comprising:
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a first layer comprising a plurality of columns; a second layer comprising a plurality of rows, the second layer opposing the first layer; a pressure-sensitive cell at each intersection of a column and a row, each pressure-sensitive cell configured to change a resistance of the cell inversely proportional to an amount of force applied to that cell; and a spacer assembly between pressure-sensitive cells, the spacer assembly comprising an island having approximately a same height as each of the plurality of columns, a land having approximately a same height as each of the plurality of rows, and a spacer between the island and the land, the spacer sized to span a distance between the island and the land in the absence of an external applied force and to separate the column from the row at adjacent pressure-sensitive cells in the absence of an external applied force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pressure-sensitive multi-touch device configured to detect one or more touch inputs, the multi-touch device comprising:
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a matrix of pressure-sensitive cells, each pressure-sensitive cell configured to change a resistance of the cell inversely proportional to an amount of force applied to that cell and each pressure-sensitive cell comprising; a first side having a first height; and a second side opposing the first side and having a second height; and a matrix of spacer assemblies, each spacer assembly positioned between adjacent pressure-sensitive cells and comprising; an island having a third height substantially equal to the first height; a land opposing the island and having a fourth height substantially equal to the second height; and a spacer between the island and the land. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A pressure-sensitive multi-touch device configured to detect one or more touch inputs, the multi-touch device comprising:
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a first layer comprising a plurality of columns; a second layer comprising a plurality of rows, the second layer opposing the first layer; a pressure-sensitive cell at each intersection of a column and a row, each pressure-sensitive cell configured to change a resistance of the cell inversely proportional to an amount of force applied to that cell; a spacer assembly between pressure-sensitive cells, the spacer assembly comprising an island having approximately a same height as each of the plurality of columns, a land having approximately a same height as each of the plurality of rows, and a spacer between the island and the land, the spacer sized to span a distance between the island and the land in the absence of an external applied force and to separate the column from the row at adjacent pressure-sensitive cells in the absence of an external applied force; a logic subsystem in communication with each pressure-sensitive cell; and a data-holding subsystem holding instructions executable by the logic subsystem to interpolate a location of a touch contact area from a resistance measured at two or more pressure-sensitive cells. - View Dependent Claims (19, 20)
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Specification