| 主权项 |
1. A pressure-sensitive multi-touch device responsive to touch pressure from one or more touch inputs, the multi-touch device comprising:
a series of row conductors arranged on a first layer; a series of column conductors arranged on a second layer, the series of column conductors opposing and intersecting the series of row conductors to form, at each intersection of row and column conductors, a pressure-sensitive cell, an electrical resistance of each cell inversely related to a force applied to that cell; materially distinct from the row and column conductors, a series of insulating spacers arranged between the first layer and the second layer to electrically isolate row and column conductors at each intersection to which no touch force is applied, the spacers coupled between dummy islands of the first layer, equal in height to the row conductors, and opposing lands of the second layer, equal in height to the column conductors; and an elastomeric force-spreading sheet including a flat side and a plurality of bumps opposite the flat side, each bump aligned with a different pressure-sensitive cell and sized and shaped to diffuse the touch force, directed toward the flat side, to two or more of the pressure-sensitive cells. |
