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:
Jul. 07, 2026
Filed:
May. 19, 2022
Panjit International Inc., Kaohsiung, TW;
PANJIT INTERNATIONAL INC., Kaohsiung, TW;
Abstract
A semiconductor device and a manufacturing method thereof are provided. The manufacturing method includes steps of: depositing an N-drift layer on a substrate, conducting an ion implant process on the N-drift layer to form a plurality of P-type pillars, depositing a N-type epitaxial layer on the P-type pillars, conducting an ion implant process on the N-type epitaxial layer to form a first P-type epitaxial layer and at least one localized P region, conducting a field oxidation to the first P-type epitaxial layer to form a second P-type epitaxial layer, and forming a field oxide layer on the first P-type epitaxial layer and the N-type epitaxial layer. The localized P region passes though the N-type epitaxial layer to the field oxide layer.