Key button structure and portable terminal device therewith

Details Key button structure and portable terminal device therewith Key button structure and portable terminal device therewith

2007-09-18

2007-09-18

Enad, Elvin (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S313000

Reexamination Certificate

active

11200085

ABSTRACT:
The present invention provides a key button structure, capable of easily and positively finding a targeted character in accordance with an entry mode preset by a user, comprises: a key top; a light shielding section, which is attached onto rear face of the key top and of which is formed by reversely printing characters assigned to a key button for each character type display area; key backlights, each of which is provided in a dome anchoring sheet for covering a metal dome, and are arranged so as to be divided into three types: key backlights for lighting a numeral display area, a kana character display area, and an alphabetical letter display area respectively. For example, with a numeral entry mode preset, only the key backlight for lighting the numeral display area is lighted, thus displaying only a required numeral bright in the number entry mode.

REFERENCES:
patent: 5408060 (1995-04-01), Muurinen
patent: 6373008 (2002-04-01), Saito et al.
patent: 6761462 (2004-07-01), Yoshida
patent: 6797902 (2004-09-01), Farage et al.
patent: 6803903 (2004-10-01), Ostergård et al.
patent: 2005/0073446 (2005-04-01), Lazaridis et al.
patent: 0 508 563 (1992-01-01), None
patent: 1 139 639 (2001-03-01), None
patent: 1 523 021 (2003-10-01), None
patent: 1 542 437 (2004-12-01), None
patent: 2001-006479 (2001-01-01), None
patent: 2002-320005 (2002-10-01), None
patent: WO98/01876 (1998-01-01), None
patent: WO 02-15211 (2002-02-01), None
patent: WO 03-017080 (2003-02-01), None
Patent Abstracts of Japan, vol. 15:410, Oct. 18, 1991 & JP 03 164922 A (Canon Inc.), abstract only.

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