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. 16, 2022
Filed:
Oct. 20, 2021
Nuvoton Technology Corporation Japan, Kyoto, JP;
Masanori Hiroki, Shiga, JP;
Shigeo Hayashi, Kyoto, JP;
Kenji Nakashima, Toyama, JP;
Toshiya Fukuhisa, Osaka, JP;
Keimei Masamoto, Niigata, JP;
Atsushi Yamada, Toyama, JP;
NUVOTON TECHNOLOGY CORPORATION JAPAN, Kyoto, JP;
Abstract
A semiconductor device includes: a mounting board; and a semiconductor element disposed on the mounting board via metal bumps, wherein the semiconductor element includes a semiconductor stacked structure and first electrodes, the mounting board includes second electrodes, the metal bumps include a first layer in contact with the first electrodes of the semiconductor element and a second layer located on a side opposite to the first electrodes, an average crystal grain size of crystals included in the first layer is larger than an average crystal grain size of crystals included in the second layer, and the second layer is spaced apart from the first electrodes of the semiconductor element.