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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 9911695 B1

PDFFull Text
Date of Patent:
Mar. 06, 2018

Filed:

Aug. 23, 2016

Wiring board including multiple wiring layers that are different in surface roughness

Applicant:

Shinko Electric Industries Co., Ltd., Nagano, JP;

Inventor:

Toyoaki Sakai, Nagano, JP;

Assignee:

SHINKO ELECTRIC INDUSTRIES CO., LTD., Nagano, JP;

Attorney:

IPUSA, PLLC

Primary Examiner:

Daniel Whalen

Int. Cl.
CPC ...
H01L 23/522 (2006.01); H01L 23/528 (2006.01); H01L 23/532 (2006.01); H01L 23/498 (2006.01); H01L 21/48 (2006.01); H01L 25/10 (2006.01);
U.S. Cl.
CPC ...
H01L 23/528 (2013.01); H01L 21/4846 (2013.01); H01L 23/49822 (2013.01); H01L 23/5226 (2013.01); H01L 23/53228 (2013.01); H01L 25/105 (2013.01);
Abstract

A wiring board includes an insulating layer, a first wiring layer, and a second wiring layer. The first wiring layer is formed in a first surface of the insulating layer, and includes a pad on which a semiconductor chip is to be mounted and a wiring pattern. The second wiring layer is formed on a second surface of the insulating layer opposite to the first surface. The roughness of a surface of the first wiring layer exposed at the first surface of the insulating layer is smaller than the roughness of a surface of the second wiring layer exposed on the second surface of the insulating layer.

Find Patent Forward Citations

Sakai, Toyoaki. (2018). Wiring board including multiple wiring layers that are different in surface roughness (U.S. Patent No. 9911695). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9911695

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

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