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. 20, 2017

Filed:

Jun. 08, 2015
Applicant:

Infineon Technologies Ag, Neubiberg, DE;

Inventors:

Alexander Heinrich, Bad Abbach, DE;

Bernd Rakow, Regensburg, DE;

Assignee:

Infineon Technologies AG, Neubiberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01); C22C 13/00 (2006.01); H01L 23/00 (2006.01); B23K 35/02 (2006.01); B23K 35/26 (2006.01); H01L 23/495 (2006.01);
U.S. Cl.
CPC ...
C22C 13/00 (2013.01); B23K 35/0222 (2013.01); B23K 35/262 (2013.01); H01L 23/49513 (2013.01); H01L 23/49524 (2013.01); H01L 23/49562 (2013.01); H01L 24/16 (2013.01); H01L 24/81 (2013.01); H01L 2224/06181 (2013.01); H01L 2224/16227 (2013.01); H01L 2224/16245 (2013.01); H01L 2224/16502 (2013.01); H01L 2224/17181 (2013.01); H01L 2224/32225 (2013.01); H01L 2224/32245 (2013.01); H01L 2224/33181 (2013.01); H01L 2224/8182 (2013.01);
Abstract

A method includes providing a first and a second joining partner each having a first main surface, wherein at least a portion of the first main surfaces of the first and joining partners each comprise a metal layer. The method further includes applying a plurality of solder preforms to the metal layer of the first main surface of at least one of the first and second joining partners, positioning the first and second joining partners so that the solder preforms contact the metal layers of the first main surfaces of the first and second joining partners, and melting the plurality of solder preforms under pressure to form a single continuous thin layer area interconnect comprising a diffusion solder bond which bonds together the metal layers of the of the first main surfaces of the first and second joining partners.


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