Invention Application
- Patent Title: VERTICAL PILLAR-TYPE FIELD EFFECT TRANSISTOR AND METHOD
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Application No.: US15873935Application Date: 2018-01-18
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Publication No.: US20180226503A1Publication Date: 2018-08-09
- Inventor: Ruilong Xie , Kangguo Cheng , Tenko Yamashita
- Applicant: GLOBALFOUNDRIES INC.
- Applicant Address: KY GRAND CAYMAN
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY GRAND CAYMAN
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L21/8234 ; H01L29/66 ; H01L21/311 ; H01L29/417 ; H01L23/535 ; H01L27/088 ; H01L21/768

Abstract:
Disclosed is a method of forming a vertical pillar-type field effect transistor (FET). One or more semiconductor pillars are formed by epitaxial deposition in one or more openings, respectively, that extend through a first dielectric layer and that have high aspect ratios in two directions. The first dielectric layer is etched back and the following components are formed laterally surrounding the semiconductor pillar(s): a first source/drain region above and adjacent to the first dielectric layer, a second dielectric layer on the first source/drain region, a gate on the second dielectric layer and a gate cap on the gate. The gate cap extends over the top surface(s) of the semiconductor pillar(s). A recess is formed in the gate cap to expose at least the top surface(s) of the semiconductor pillar(s) and a second source/drain region is formed within the recess. Also disclosed is the vertical pillar-type FET structure.
Public/Granted literature
- US10158021B2 Vertical pillar-type field effect transistor and method Public/Granted day:2018-12-18
Information query
IPC分类: