公开(公告)号：US10263084B2

公开(公告)日：2019-04-16

申请号：US15868620

申请日：2018-01-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongjin Lee ,  Junsoo Kim ,  Moonyoung Jeong ,  Satoru Yamada ,  Dongsoo Woo ,  Jiyoung Kim

IPC: H01L29/40 ,  H01L29/423 ,  H01L27/108 ,  H01L27/088

Abstract: A semiconductor device may include a device isolation region configured to define an active region in a substrate, an active gate structure disposed in the active region, and a field gate structure disposed in the device isolation region. The field gate structure may include a gate conductive layer. The active gate structure may include an upper active gate structure including a gate conductive layer and a lower active gate structure formed under the upper active gate structure and vertically spaced apart from the upper active gate structure. The lower active gate structure may include a gate conductive layer. A top surface of the gate conductive layer of the field gate structure is located at a lower level than a bottom surface of the gate conductive layer of the upper active gate structure.

公开(公告)号：US09673276B2

公开(公告)日：2017-06-06

申请号：US15194066

申请日：2016-06-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Junsoo Kim ,  Dongjin Lee ,  Dongsoo Woo ,  Jun-Bum Lee ,  Sang-Il Han

IPC: H01L29/06 ,  H01L29/49 ,  H01L29/51 ,  H01L27/088 ,  H01L27/108 ,  H01L27/22 ,  H01L27/24

CPC classification number: H01L29/0653 ,  H01L27/088 ,  H01L27/10805 ,  H01L27/10814 ,  H01L27/10876 ,  H01L27/10885 ,  H01L27/10891 ,  H01L27/228 ,  H01L27/2436 ,  H01L29/4966 ,  H01L29/513 ,  H01L29/517

Abstract: A semiconductor device may include a semiconductor substrate including an active region defined by a trench, a device isolation layer provided in the trench to surround the active region, a gate electrode extending in a direction crossing the active region, and formed on the active region and the device isolation layer, and a gate insulating layer between the active region and the gate electrode. The active region may have a first conductivity type, and the device isolation layer may include a first silicon oxide layer on an inner surface of the first trench and a different layer, selected from one of first metal oxide layer and a negatively-charged layer, on the first silicon oxide layer.