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:
May. 19, 2020

Filed:

Oct. 17, 2018
Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Shigeto Honda, Tokyo, JP;

Fumihito Masuoka, Tokyo, JP;

Yuki Haraguchi, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/861 (2006.01); H01L 23/498 (2006.01); H01L 29/06 (2006.01); H01L 29/36 (2006.01); H01L 29/66 (2006.01); H01L 29/16 (2006.01); H01L 29/20 (2006.01);
U.S. Cl.
CPC ...
H01L 29/8611 (2013.01); H01L 23/49811 (2013.01); H01L 29/0603 (2013.01); H01L 29/0619 (2013.01); H01L 29/36 (2013.01); H01L 29/861 (2013.01); H01L 29/1608 (2013.01); H01L 29/2003 (2013.01); H01L 29/66136 (2013.01); H01L 2224/48463 (2013.01); H01L 2224/4911 (2013.01);
Abstract

The semiconductor device according to the present invention includes: an n-type semiconductor substrate; a p-type anode layer provided in a front surface of the n-type semiconductor substrate; an anode electrode provided on the p-type anode layer; and a wire connected to the anode electrode, the p-type anode layer includes: a p-type anode layer disposed to include a position right under a portion where the wire is connected; and a p-type anode layer disposed to exclude the position right under the portion where the wire is connected, and an impurity concentration of the p-type anode layer is higher than an impurity concentration of the p-type anode layer.


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