公开(公告)号：US11437320B2

公开(公告)日：2022-09-06

申请号：US16835557

申请日：2020-03-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Suk Youn ,  Chan Ho Lee ,  Uk Rae Cho ,  Woo jin Jung ,  Kyu Won Choi

IPC: G11C7/18 ,  H01L23/528 ,  H01L27/105 ,  H01L29/06 ,  G11C8/14 ,  H01L27/088 ,  H01L29/78

Abstract: A semiconductor device includes a substrate including a first cell region, a second cell region adjacent to the first cell region in a first direction, and a comparison region adjacent the first and second cell regions in a second direction, a bit line in a first metal level on the substrate and extending in the first direction, and a first ground rail in a second metal level different from the first metal level. The first ground rail comprises a first sub-ground rail extending in the second direction on the first cell region, a second sub-ground rail extending in the second direction on the second cell region, a third sub-ground rail connecting the first sub-ground rail to the second sub-ground rail on the first and second cell regions, and a fourth sub-ground rail that branches off from the third sub-ground rail and extends in the second direction.

公开(公告)号：US20210028109A1

公开(公告)日：2021-01-28

申请号：US16835557

申请日：2020-03-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Suk Youn ,  Chan Ho Lee ,  Uk Rae Cho ,  Woo jin Jung ,  Kyu Won Choi

IPC: H01L23/528 ,  H01L27/105 ,  H01L29/06 ,  H01L29/78 ,  H01L27/088 ,  G11C7/18 ,  G11C8/14

Abstract: A semiconductor device includes a substrate including a first cell region, a second cell region adjacent to the first cell region in a first direction, and a comparison region adjacent the first and second cell regions in a second direction, a bit line in a first metal level on the substrate and extending in the first direction, and a first ground rail in a second metal level different from the first metal level. The first ground rail comprises a first sub-ground rail extending in the second direction on the first cell region, a second sub-ground rail extending in the second direction on the second cell region, a third sub-ground rail connecting the first sub-ground rail to the second sub-ground rail on the first and second cell regions, and a fourth sub-ground rail that branches off from the third sub-ground rail and extends in the second direction.