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:
May. 21, 2013
Filed:
Nov. 16, 2010
Akira Kitayama, Tachikawa, JP;
Kouichi Ihara, Yokohama, JP;
Kenji Takahashi, Kawaguchi, JP;
Tatemi Ido, Hachioji, JP;
Akira Kitayama, Tachikawa, JP;
Kouichi Ihara, Yokohama, JP;
Kenji Takahashi, Kawaguchi, JP;
Tatemi Ido, Hachioji, JP;
Hitachi Consumer Electronics Co., Ltd., Tokyo, JP;
Hitachi—LG Data Storage, Inc., Tokyo, JP;
Abstract
An electronic device including a mechanism for changing the relative positions of two circuit boards such as in an optical disc drive is provided. A flexible printed circuit electrically connected between the two circuit boards changes shape to suppress fluctuations in the transmission characteristics occurring due to contact with metal such as a case, and provides stable signal transmission. The flexible printed circuit includes at least one or more differential lines, a fixed unit affixed to a case at least at one location, and a movable unit that changes shape according to the relative positions of two cases. The lines adjacent to the differential line are a grounded surface, and the flexible printed circuit is formed to narrow the distance between the movable unit lines more than the distance between the fixed unit lines.