公开(公告)号：US20170047350A1

公开(公告)日：2017-02-16

申请号：US15335549

申请日：2016-10-27

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Andres Bryant ,  Jeffrey B. Johnson ,  Effendi Leobandung ,  Tenko Yamashita

IPC: H01L27/12 ,  H01L29/66 ,  H01L29/45 ,  H01L29/51 ,  H01L29/16 ,  H01L29/78 ,  H01L29/06

CPC classification number: H01L27/1211 ,  H01L29/0649 ,  H01L29/16 ,  H01L29/456 ,  H01L29/517 ,  H01L29/66545 ,  H01L29/66795 ,  H01L29/785

Abstract: A method for fabricating a FinFET device includes forming a silicon-on-insulator (SOI) substrate having a semiconductor layer overlaying a buried oxide (BOX) layer; etching the semiconductor layer to form a plurality of fin structures and a semiconductor layer gap in between the plurality of fin structures and the BOX layer; depositing a sacrificial gate over at least one gate region, wherein the gate region separates a source and a drain region; disposing offset spacers on vertical sidewalls of the sacrificial gate; removing the sacrificial gate; removing the semiconductor layer gap in the gate region to prevent merging of the plurality of fin structures in the gate regions; and fabricating a high-k dielectric metal gate structure overlaying the fin structures in the gate region.

Abstract translation: 一种制造FinFET器件的方法包括：形成具有覆盖掩埋氧化物（BOX）层的半导体层的绝缘体上硅（SOI）衬底; 蚀刻半导体层以在多个翅片结构和BOX层之间形成多个翅片结构和半导体层间隙; 在至少一个栅极区上沉积牺牲栅极，其中栅极区域分离源区和漏区; 在牺牲栅极的垂直侧壁上设置偏置间隔物; 去除牺牲门; 去除所述栅极区域中的半导体层间隙，以防止所述栅极区域中的所述多个翅片结构的合流; 以及制造覆盖栅极区域中的鳍结构的高k电介质金属栅极结构。