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:
Nov. 03, 2020
Filed:
Jul. 16, 2020
Samsung Electronics Co., Ltd., Suwon-si, KR;
Eunyeoung Choi, Hwaseong-si, KR;
Hyung Joon Kim, Hwaseong-si, KR;
Bio Kim, Hwaseong-si, KR;
Yujin Kim, Hwaseong-si, KR;
Junggeun Jee, Hwaseong-si, KR;
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Abstract
A semiconductor device includes a lower stack structure on a substrate, an upper stack structure on the lower stack structure, and a channel structure in a channel hole formed through the upper stack structure and the lower stack structure. The channel hole includes a lower channel hole in the lower stack structure, an upper channel hole in the upper stack structure, and a partial extension portion adjacent to an interface between the lower stack structure and the upper stack structure. The partial extension portion is in fluid communication with the lower channel hole and the upper channel hole. A lateral width of the partial extension portion may be greater than a lateral width of the upper channel hole adjacent to the partial extension portion and greater than a lateral width of the upper channel hole adjacent to the partial extension portion.