Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1995-11-14
1997-09-23
Picard, Leo P.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
361212, 361220, 361753, 361777, 361816, H05K 114, H05K 900
Patent
active
056711239
ABSTRACT:
An IC card including an electric circuit board and have face and back metallic panels that include a housing and are attached to a resin frame. The IC card has a discharge pattern formed on the electric circuit board for discharging static electricity applied to the metallic panels, a conductor elastically disposed between one of the metallic panels and the discharge pattern for electrically coupling one of the metallic panels with the discharge pattern, and a ground pattern formed on the electric circuit board with the ground pattern separated by a given distance A from the discharge pattern for routing the static electricity to a card connector. The given distance A is a distance necessary for the static electricity to start discharging at a given voltage. A given distance needed for discharge can be maintained precisely through a simple manufacturing process. A fluctuation in discharge start voltage can therefore be minimized. This results in a highly reliable product.
REFERENCES:
patent: 5206796 (1993-04-01), Thomson et al.
patent: 5210442 (1993-05-01), Ishimoto
patent: 5381159 (1995-01-01), Oohori
patent: 5414253 (1995-05-01), Baudouin et al.
Ochi Katsunori
Ohbuchi Jun
Omori Makoto
Washida Tetsuro
Gandhi Jayprakash N.
Mitsubishi Denki & Kabushiki Kaisha
Picard Leo P.
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