| US 7,394,039 B2 | ||
| Keyboard and membrane switch for keyboard | ||
| Masahiro Yanagi, Shinagawa (Japan); Shigemi Kurashima, Shinagawa (Japan); Hideki Iwata, Shinagawa (Japan); Takashi Yuba, Shinagawa (Japan); Masahiro Kaneko, Shinagawa (Japan); Yuriko Segawa, Shinagawa (Japan); and Takashi Arita, Shinagawa (Japan) | ||
| Assigned to Fujitsu Component Limited, Tokyo (Japan) | ||
| Filed on Oct. 06, 2006, as Appl. No. 11/543,905. | ||
| Claims priority of application No. 2006-066441 (JP), filed on Mar. 10, 2006. | ||
| Prior Publication US 2007/0209920 A1, Sep. 13, 2007 | ||
| Int. Cl. H01H 1/10 (2006.01) | ||
| U.S. Cl. 200—512 [200/520] | 10 Claims |
| 1. A keyboard comprising:
a housing including a base member and a top plane member;
a membrane switch installed inside the housing, the membrane switch having a first resin sheet, a second resin sheet, and
a spacer resin sheet arranged between the first and second resin sheets;
wherein the membrane switch includes a UWB flat antenna having an antenna element pattern formed on the first resin sheet,
a microwave transmission line extending from the antenna element pattern, and a ground pattern arranged in a position facing
the antenna element pattern.
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