Touch plate assembly

Details Touch plate assembly Touch plate assembly

H - Electricity

03

K

340/178, 340/187

H03K 17/96 (2006.01) H01H 13/70 (2006.01)

Patent

CA 1047939

ABSTRACT OF THE DISCLOSURE A touch plate assembly for a digital control device. The touch plate is sectioned off into a plurality of touch switch areas, each of which repre- sents certain information to be entered into the control circuit. The touch plate and a printed circuit board, carrying the detection circuitry, are held in place by a housing which may carry other circuitry as well. Electrical connections between the detection circuitry and the touch switches are made by resilient spring contact members rigidly mounted on the circuit board and soldered in place as a component. A combination shield-filter assem- bly is bonded to the back of the touch plate. The shield-filter assembly in- cludes a metal-polyester laminate having windows therein, through which the spring contact members make electrical contact to contact areas on the touch plate. In addition, certain portions of the metal layer removed so that light from a light source located on the printed circuit board may be seen by the user of the control.

255188

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