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.

Date of Patent:
Jun. 14, 2016

Filed:

Oct. 04, 2013
Applicant:

Invensas Corporation, San Jose, CA (US);

Inventors:

Cyprian Emeka Uzoh, San Jose, CA (US);

Sitaram Arkalgud, Cupertino, CA (US);

Assignee:

Invensas Corporation, San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25F 3/14 (2006.01); C25F 3/12 (2006.01); H05K 1/02 (2006.01); H05K 1/11 (2006.01); H01L 23/498 (2006.01); H01L 21/48 (2006.01);
U.S. Cl.
CPC ...
C25F 3/12 (2013.01); C25F 3/14 (2013.01); H01L 21/486 (2013.01); H01L 23/49827 (2013.01); H05K 1/0212 (2013.01); H05K 1/115 (2013.01); H01L 2224/16225 (2013.01); H01L 2924/15311 (2013.01);
Abstract

A mask is formed over a first conductive portion of a conductive layer to expose a second conductive portion of the conductive layer. An electrolytic process is performed to remove conductive material from a first region and a second region of the second conductive portion. The second region is aligned with the mask relative to an electric field applied by the electrolytic process. The second region separates the first region of the second conductive portion from the first conductive portion. The electrolytic process is concentrated relative to the second region such that removal occurs at a relatively higher rate in the second region than in the first region.


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