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:
Dec. 26, 2023
Filed:
Nov. 02, 2021
Applicant:
Changxin Memory Technologies, Inc., Hefei, CN;
Assignee:
CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/48 (2006.01); H01L 27/02 (2006.01); H02H 1/00 (2006.01); H02H 9/04 (2006.01); H01L 29/423 (2006.01); H01L 29/417 (2006.01); H01L 23/00 (2006.01);
U.S. Cl.
CPC ...
H01L 23/48 (2013.01); H01L 27/0266 (2013.01); H01L 27/0292 (2013.01); H01L 29/41766 (2013.01); H01L 29/42376 (2013.01); H02H 1/0007 (2013.01); H02H 9/046 (2013.01); H01L 24/04 (2013.01); H01L 24/05 (2013.01); H01L 2224/04042 (2013.01); H01L 2224/05569 (2013.01);
Abstract
The present disclosure provides an electrostatic protection device and an electrostatic protection circuit. The electrostatic protection device includes: a discharge transistor, located on a substrate for discharging electrostatic charges; and a first pad, located on a first metal layer and electrically connected to a drain region of the discharge transistor; wherein a projection of the first pad on the substrate partially overlaps a projection of the drain region on the substrate.