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:
Aug. 28, 2018
Filed:
Apr. 08, 2016
Applicant:
Multek Technologies Limited, San Jose, CA (US);
Inventor:
Kwan Pen, Guandong, CN;
Assignee:
Multek Technologies Limited, San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 3/46 (2006.01); H05K 1/11 (2006.01); H05K 3/06 (2006.01); H05K 1/02 (2006.01); H05K 3/42 (2006.01);
U.S. Cl.
CPC ...
H05K 3/4611 (2013.01); H05K 1/0298 (2013.01); H05K 1/115 (2013.01); H05K 3/06 (2013.01); H05K 3/42 (2013.01); H05K 3/4697 (2013.01); H05K 2201/09036 (2013.01);
Abstract
A PCB has multiple stacked layers laminated together, the laminated stack includes regular flow prepreg and includes a recessed cavity, a bottom perimeter of which is formed by a photo definable, or photo imageable, polymer structure having a low adhesion to an underlying conductive layer, such as an LPI mixture. The LPI mixture defines cavity dimensions and enables the use of regular flow prepreg in the laminated stack.