Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2006-12-12
2006-12-12
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C178S018010, C178S019010
Reexamination Certificate
active
07148882
ABSTRACT:
The invention provides a novel capacitive device configured to detect differences in an applied force over a continuous range of applied force that includes zero force. The device includes first and second electrodes that are spaced apart a predetermined distance from each other in a rest position. A measurable capacitance exists between the first and second electrodes. Structured elements having a predetermined maximum dimension are positioned in the device to control the predetermined distance between the first and second electrodes. An applied force to the device causes a change in the distance between the first and second electrodes and a related change in the capacitance that can be measured to determine information related to the applied force.
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Hamerly Michael E.
Kamrath Robert F.
Weaver Billy L.
3M Innovatie Properties Company
Hjerpe Richard
Lesperance Jean
Pechman Robert J.
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