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. 11, 2018
Filed:
Mar. 31, 2018
Winbond Electronics Corp., Taichung, TW;
Kazuaki Takesako, Kanagawa, JP;
Kazutaka Manabe, Kanagawa, JP;
Noriaki Ikeda, Kanagawa, JP;
Wei-Che Chang, Taichung, TW;
Winbond Electronics Corp., Taichung, TW;
Abstract
Provided is a dynamic random access memory. A plurality of isolation structures is disposed in a substrate to define a plurality of active regions arranged along a first direction. The substrate has a trench extended along the first direction and passing through the plurality of isolation structures and the plurality of active regions. A buried word line is disposed in the trench. A plurality of gate dielectric layers is disposed in the trench of the plurality of active regions to surround and cover the buried word line. A cap layer covers the buried word line. The height of the top surface of the second side of the buried word line is lower than the height of the top surface of the first side of the buried word line passing through the plurality of active regions and the plurality of isolation structures.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile