Metal dome sheet in mobile communication terminal and keypad...

Details Metal dome sheet in mobile communication terminal and keypad... Metal dome sheet in mobile communication terminal and keypad...

2006-06-20

2006-06-20

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

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Double snap

C200S516000, C200S314000

Reexamination Certificate

active

07064288

ABSTRACT:
A keypad for a mobile communication terminal is provided. The keypad includes a sheet having contacts which deflect so as to switch contact point pairs on a printed circuit board on and off. The contacts may be formed as hemispherical domes to facilitate use. The sheet may also include band parts covering the contacts and an insulting sheet having at least one pair of semicircular openings which expose portions of the contacts. The insulating sheet is preferably made of a light-reflecting material/color which disperses light to illuminate keys of the keypad.

REFERENCES:
patent: 5397867 (1995-03-01), Demeo
patent: 5924555 (1999-07-01), Sadamori et al.
patent: 6373008 (2002-04-01), Saito et al.
patent: 6548779 (2003-04-01), Takahashi et al.
patent: 6593537 (2003-07-01), Teruyama et al.
patent: 6604278 (2003-08-01), Sera et al.
patent: 6909063 (2005-06-01), Nam

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