Force sensors and touch panels using same

Details Force sensors and touch panels using same Force sensors and touch panels using same

2007-03-27

2007-03-27

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C178S018010

Reexamination Certificate

active

10121507

ABSTRACT:
A touch screen uses one or more force sensors to determine location of the touch on the screen. The force sensor has an accurately determined direction of sensitivity and, therefore, has reduced sensitivity to forces that are non-perpendicular to the screen. The sensor is thin in relation to the area of the active force-sensing element, allowing low profile force touch screens to have a better combination of mechanical integrity, accuracy, sensitivity, and high signal to noise ratio than has heretofore been achieved. The sensor may also be rotationally soft, so that it is effective at preventing twisting motions of the overlay or the support surface from affecting the sensed force.

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