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. 16, 2022
Filed:
Sep. 28, 2020
Samsung Electronics Co., Ltd., Suwon-si, KR;
Jongin Kang, Hwaseong-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A semiconductor device includes a substrate including a first region having a first trench and a second region having a second trench. A first buried insulation layer pattern is disposed in the first trench. The second trench includes the first buried insulation layer pattern, a second buried insulation layer pattern, and a third buried insulation layer pattern sequentially stacked therein. A first buffer insulation layer is disposed on the substrate in the first and second regions and has a flat upper surface. A second buffer insulation layer is disposed on the first buffer insulation layer. A bit line structure is disposed on the first and second regions. A first portion of the bit line structure is disposed on the second buffer insulation layer and has a flat lower surface. A second portion of the bit line structure directly contacts a surface of the substrate in the first region.