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. 19, 2025
Filed:
Dec. 23, 2022
Joulwatt Technology Co., Ltd., Hangzhou, CN;
Tao Hu, Hangzhou, CN;
JOULWATT TECHNOLOGY CO., LTD., Hangzhou, CN;
Abstract
The present disclosure relates to an electrostatic protection device including an SCR and a manufacturing method thereof. The electrostatic protection device includes a third N+ doped region across an N-type well region and a P-type well region, and a third P+ doped region adjacent to the third N+ doped region. Each of the third N+ doped region and the third P+ doped region has a high doping concentration. In a case that Zener breakdown occurs in a PN junction structure between the third N+ doped region and the third P+ doped region, the SCR is triggered to form a discharge current path. The present disclosure can reduce a trigger voltage of an electrostatic protection device including an SCR, and can provide electrostatic protection devices having different trigger voltages, with high stability and high robustness.