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:
May. 26, 2026
Filed:
Dec. 14, 2023
Samsung Electronics Co., Ltd., Suwon-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A semiconductor device includes first, second, and third epitaxial layers sequentially stacked on a substrate and a first diffusion prevention layer provided in at least one of regions between the first and second epitaxial layers and between the second and third epitaxial layers. The first and third epitaxial layers have a first conductivity type, and the second epitaxial layer has a second conductivity type. The first diffusion prevention layer is configured to prevent an impurity in the second epitaxial layer from being diffused. The first, second, and third epitaxial layers include first, second, and third active patterns, respectively, which are respective provided in upper portions thereof and on collector, base, and emitter regions, respectively, of the substrate.