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.

Date of Patent:
Apr. 25, 2017

Filed:

Dec. 28, 2015
Applicant:

Ememory Technology Inc., Hsin-Chu, TW;

Inventors:

Wei-Zhe Wong, Hsinchu County, TW;

Meng-Yi Wu, Hsinchu County, TW;

Ping-Lung Ho, Hsinchu, TW;

Assignee:

EMEMORY TECHNOLOGY INC., Hsin-Chu, TW;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 27/112 (2006.01); G11C 17/16 (2006.01); H01L 23/522 (2006.01); H01L 23/525 (2006.01); H01L 23/528 (2006.01); H01L 23/532 (2006.01); H01L 27/02 (2006.01); H01L 29/10 (2006.01);
U.S. Cl.
CPC ...
H01L 27/11206 (2013.01); G11C 17/16 (2013.01); H01L 23/528 (2013.01); H01L 23/5226 (2013.01); H01L 23/5252 (2013.01); H01L 23/53271 (2013.01); H01L 27/0207 (2013.01); H01L 29/1095 (2013.01);
Abstract

An antifuse-type one time programming memory cell has following structures. A first doped region, a second doped region, a third doped region and a fourth doped region are formed in a well region. A gate oxide layer covers a surface of the well region. A first gate is formed on the gate oxide layer and spanned over the first doped region and the second doped region. The first gate is connected with a word line. A second gate is formed on the gate oxide layer and spanned over the third doped region and the fourth doped region. The second gate is connected with the word line. A third gate is formed on the gate oxide layer and spanned over the second doped region and the third doped region. The third gate is connected with an antifuse control line.


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