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:
Jan. 29, 2019
Filed:
Jun. 19, 2017
Applicant:
United Microelectronics Corp., Hsin-Chu, TW;
Inventors:
Assignee:
UNITED MICROELECTRONICS CORP., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/788 (2006.01); H01L 27/11521 (2017.01); H01L 27/11556 (2017.01); H01L 29/66 (2006.01); H01L 29/423 (2006.01);
U.S. Cl.
CPC ...
H01L 27/11521 (2013.01); H01L 27/11556 (2013.01); H01L 29/42328 (2013.01); H01L 29/66825 (2013.01); H01L 29/788 (2013.01);
Abstract
A nonvolatile memory cell includes a substrate having a drain region, a source region, and a channel region between the drain region and the source region. A floating gate and a select gate are disposed on the channel region. A control gate is disposed on the floating gate. An erase gate is disposed on the source region. The erase gate includes a lower end portion that extends into a major surface of the substrate.