Touch selection pad and method of manufacture

Details Touch selection pad and method of manufacture Touch selection pad and method of manufacture

1987-04-20

1988-03-15

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

29 2542, 200DIG1, 340365C, H01H 900, H01H 1302, H02P 700

Patent

active

047316942

ABSTRACT:
A touch selection pad contains a matrix of tactile sensors each of which contains a composite material with a pressure and direction-dependent electric conductivity and a dielectric material forming a capacitor. These are provided with column electrodes and row electrodes. When touched, each of the sensors creates a series circuit comprising a resistor formed of the composite material and a capacitor formed from the dielectric having a capacitance of preferably at least 50 pF. In this matrix of tactile sensors, the pressure-dependent resistance together with the associated fixed capacity serves as the measuring variable. The touch pad due to the small spacing between the sensors has a high resolution. It can be produced in a simple manner by sequentially depositing layers on a metalized carrier by means of a thin-film technique. The row and column electrodes can be etched out of a metalized plastic cover layer and a metalized carrier, respectively, by micro structuring techniques.

REFERENCES:
patent: 3124772 (1964-03-01), Newkirk
patent: 3503031 (1970-03-01), Nyhus et al.
patent: 3641410 (1972-02-01), Vogelsberg
patent: 4367385 (1983-01-01), Frame
patent: 4415781 (1983-11-01), Frame et al.

Affiliated with

Also associated with

Rating

Touch selection pad and method of manufacture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Touch selection pad and method of manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Touch selection pad and method of manufacture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1929435