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:
Mar. 26, 2024
Filed:
Jan. 22, 2020
Sumitomo Electric Industries, Ltd., Osaka, JP;
Takeyoshi Masuda, Osaka, JP;
Yu Saitoh, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
In the direction from the first main surface toward the second main surface through each of the second impurity region and the fourth impurity region, a concentration profile of an n-type impurity has a second relative maximum value and a fourth relative maximum value located closer to the first main surface than a position where the second relative maximum value is exhibited. The fourth relative maximum value is larger than the third relative maximum value, the third relative maximum value is larger than the second relative maximum value, and the second relative maximum value is larger than the first relative maximum value.