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.:

US 7425727 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 16, 2008

Filed:

Sep. 15, 2005
Applicants:

Hiroyuki Shoji, Katsuragi, JP;

Hideya Takakura, Nara-ken, JP;

Kazuo Kusuda, Nara-ken, JP;

Inventors:

Hiroyuki Shoji, Katsuragi, JP;

Hideya Takakura, Nara-ken, JP;

Kazuo Kusuda, Nara-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical semiconductor elementis mounted on a lead frame, the optical semiconductor elementis encapsulated with a mold resin portionof a first layer that has light permeability, and the mold resin portionof the first layer is encapsulated with a mold resin portionof a second layer that has light permeability. Then, a coefficient of linear expansion of the mold resin portionof the first layer is made smaller than a coefficient of linear expansion of the mold resin portionof the second layer.


Find Patent Forward Citations

Shoji, Hiroyuki. (2008). Optical semiconductor device, method for fabricating the same, lead frame and electronic equipment (U.S. Patent No. 7425727). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7425727

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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