The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Jul. 21, 2009
Naoki Tatehata, Kyoto, JP;
Nobuhisa Takahashi, Okayama, JP;
Masahiro Ito, Okayama, JP;
Makoto Sadakane, Okayama, JP;
Shinji Ohkawa, Okayama, JP;
Naoki Tatehata, Kyoto, JP;
Nobuhisa Takahashi, Okayama, JP;
Masahiro Ito, Okayama, JP;
Makoto Sadakane, Okayama, JP;
Shinji Ohkawa, Okayama, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A light guide sheet includes a material sheet having a film shape, first and second illuminations portion provided on the material sheet for diffusing light. The material sheet has a slit having substantially a strip shape provided therein and provided around the first illumination portion. The slit has a first edge and a second edge opposite to the first edge. The first edge faces the first illumination portion. The material sheet includes a first bridge and a second bridge linking the first edge of the first slit to the second edge across the first slit. This light guide sheet provides a movable contact assembly which is easily fabricated and provides preferable illuminating.