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:
Sep. 08, 2015
Filed:
Jan. 09, 2012
Jae Hyun Yoo, Seoul, KR;
Jong Min Kim, Seoul, KR;
Jae Hyun Yoo, Seoul, KR;
Jong Min Kim, Seoul, KR;
Dongbu HiTek Co., Ltd., Seoul, KR;
Abstract
A bipolar junction transistor includes a first trench element isolation film, a second trench element isolation film, a first base region, a second base region, a collector region, a first well, a second well, an emitter, a collector, and bases. The second well is formed by implanting an n-type impurity into the semiconductor substrate, and the emitter is formed by implanting the n-type impurity into the emitter region between the first trench element isolation film and the second well. The collector is formed by implanting the n-type impurity into the collector region between the first well and the second trench element isolation film, and the bases are formed by implanting the p-type impurity into the first base region and into the second base region between the emitter region and the second well.