公开(公告)号：US10332831B2

公开(公告)日：2019-06-25

申请号：US15638552

申请日：2017-06-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Augustin Jinwoo Hong ,  Dae-Ik Kim ,  Chan-Sic Yoon ,  Ki-Seok Lee ,  Dong-Min Han ,  Sung-Ho Jang ,  Yoo-Sang Hwang ,  Bong-Soo Kim ,  Je-Min Park

IPC: H01L27/108 ,  H01L23/522 ,  H01L27/11568 ,  H01L21/768

Abstract: A semiconductor device includes a substrate including a cell array region including a cell active region. An insulating pattern is on the substrate. The insulating pattern includes a direct contact hole which exposes the cell active region and extends into the cell active region. A direct contact conductive pattern is in the direct contact hole and is connected to the cell active region. A bit line is on the insulating pattern. The bit line is connected to the direct contact conductive pattern and extends in a direction orthogonal to an upper surface of the insulating pattern. The insulating pattern includes a first insulating pattern including a non-metal-based dielectric material and a second insulating pattern on the first insulating pattern. The second insulating pattern includes a metal-based dielectric material having a higher dielectric constant than a dielectric constant of the first insulating pattern.