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:
Nov. 28, 2023
Filed:
Nov. 27, 2020
Applicant:
Ibiden Co., Ltd., Gifu, JP;
Inventors:
Masashi Awazu, Ogaki, JP;
Keisuke Kojima, Ogaki, JP;
Assignee:
IBIDEN CO., LTD., Ogaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05K 1/02 (2006.01); H05K 1/03 (2006.01); H05K 1/09 (2006.01); H05K 1/11 (2006.01); H05K 1/18 (2006.01); H05K 3/10 (2006.01); H05K 3/24 (2006.01); H05K 3/30 (2006.01); H05K 3/34 (2006.01); H05K 3/40 (2006.01); H05K 3/46 (2006.01); H01L 21/48 (2006.01); H01L 21/66 (2006.01); H01L 21/683 (2006.01); H01L 21/768 (2006.01); H01L 23/00 (2006.01); H01L 23/15 (2006.01); H01L 23/31 (2006.01); H01L 23/48 (2006.01); H01L 23/498 (2006.01); H01L 23/525 (2006.01); H01L 23/538 (2006.01); H05K 3/42 (2006.01);
U.S. Cl.
CPC ...
H05K 3/3452 (2013.01); H05K 1/116 (2013.01); H05K 3/422 (2013.01); H05K 3/4661 (2013.01); H05K 3/4679 (2013.01); H05K 2201/09563 (2013.01);
Abstract
A printed wiring board includes a resin insulating layer, via conductors formed in the resin insulating layer, metal posts formed on the via conductors, respectively, and a solder resist layer formed on the resin insulating layer such that the metal posts have lower portions embedded in the solder resist layer and upper portions exposed from the solder resist layer, respectively. The metal posts are formed such that each of the metal posts has a top portion having a diameter in a range of 0.8 to 0.9 times a diameter of a respective one of the lower portions of the metal posts.