INPUT DEVICE WITH ELASTIC MEMBRANE

摘要

A device includes a flexible polymer membrane (101) with compliant electrodes (108, 108a,..., 111) attached thereto. The membrane (101) is suspended in a frame (102). A handle (103), which is displaceable in respect to the frame (102), is connected to the membrane (101). A displacement of the handle (103) causes the electrodes (108, 108a,..., 111) on the membrane to be deformed, thereby changing their area and resistance. The change of area or resistance is measured by a capacitive or resistive sensing circuit (140, 141, 142) and is used to measure the deformation and therefore the displacement of the handle (103).