公开(公告)号：US08940633B2

公开(公告)日：2015-01-27

申请号：US13785403

申请日：2013-03-05

Applicant: GLOBALFOUNDARIES Inc.

Inventor： Xiuyu Cai ,  Ruilong Xie ,  John A. Iacoponi

IPC: H01L21/4763 ,  H01L21/768 ,  H01L23/48 ,  H01L29/40 ,  H01L29/78

CPC classification number: H01L29/401 ,  H01L21/76831 ,  H01L21/76897 ,  H01L21/823821 ,  H01L21/82385 ,  H01L21/823864 ,  H01L29/785 ,  H01L2924/0002 ,  H01L2924/00

Abstract: One method discloses performing an etching process to form a contact opening in a layer of insulating material above at least a portion of a source/drain, region wherein, after the completion of the etching process, a portion of a gate structure of the transistor is exposed, selectively forming an oxidizable material on the exposed gate structure, converting at least a portion of the oxidizable material to an oxide material, and forming a conductive contact in the contact opening that is conductively coupled to the source/drain region. A novel transistor device disclosed herein includes an oxide material positioned between a conductive contact and a gate structure of the transistor, wherein the oxide material contacts the conductive contact and contacts a portion, but not all, of the exterior surface of the gate structure.

Abstract translation: 一种方法公开了进行蚀刻工艺以在源极/漏极区域的至少一部分上方的绝缘材料层中形成接触开口，其中在蚀刻工艺完成之后，晶体管的栅极结构的一部分是 暴露的，在暴露的栅极结构上选择性地形成可氧化材料，将可氧化材料的至少一部分转化为氧化物材料，以及在导电耦合到源/漏区的接触开口中形成导电接触。 本文公开的新型晶体管器件包括位于晶体管的导电接触和栅极结构之间的氧化物材料，其中氧化物材料接触导电接触并接触栅极结构的外表面的一部分但不全部接触。

公开(公告)号：US09064948B2

公开(公告)日：2015-06-23

申请号：US13656794

申请日：2012-10-22

Applicant: GLOBALFOUNDARIES Inc.

Inventor： Xiuyu Cai ,  Ruilong Xie ,  Xunyuan Zhang

IPC: H01L29/78 ,  H01L21/283 ,  H01L29/49 ,  H01L29/66 ,  H01L21/768 ,  H01L29/51

CPC classification number: H01L29/4991 ,  H01L21/7682 ,  H01L29/4966 ,  H01L29/51 ,  H01L29/6653 ,  H01L29/66545 ,  H01L29/66636 ,  H01L29/78

Abstract: One method disclosed herein includes forming at least one sacrificial sidewall spacer adjacent a sacrificial gate structure that is formed above a semiconducting substrate, removing at least a portion of the sacrificial gate structure to thereby define a gate cavity that is laterally defined by the sacrificial spacer, forming a replacement gate structure in the gate cavity, removing the sacrificial spacer to thereby define a spacer cavity adjacent the replacement gate structure, and forming a low-k spacer in the spacer cavity. A novel device disclosed herein includes a gate structure positioned above a semiconducting substrate, wherein the gate insulation layer has two upstanding portions that are substantially vertically oriented relative to an upper surface of the substrate. The device further includes a low-k sidewall spacer positioned adjacent each of the vertically oriented upstanding portions of the gate insulation layer.

Abstract translation: 本文公开的一种方法包括形成邻近牺牲栅极结构的至少一个牺牲侧壁间隔物，所述牺牲栅极结构形成在半导体衬底上方，去除牺牲栅极结构的至少一部分，从而限定由牺牲隔离物横向限定的栅极腔， 在栅极腔中形成替代栅极结构，去除牺牲隔离物，从而限定邻近置换栅极结构的间隔空腔，并在间隔空腔中形成低k隔离物。 本文公开的新型器件包括位于半导体衬底上方的栅极结构，其中栅极绝缘层具有相对于衬底的上表面基本上垂直取向的两个直立部分。 该装置还包括邻近栅极绝缘层的垂直取向的竖立部分的低k侧壁间隔件。