Invention Grant
- Patent Title: Semiconductor devices and methods of manufacture
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Application No.: US18446953Application Date: 2023-08-09
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Publication No.: US12033853B2Publication Date: 2024-07-09
- Inventor: Chun-Yen Peng , Te-Yang Lai , Sai-Hooi Yeong , Chi On Chui
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsinchu
- Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee Address: TW Hsinchu
- Agency: Slater Matsil, LLP
- The original application number of the division: US16549502 2019.08.23
- Main IPC: H01L21/02
- IPC: H01L21/02 ; H01L21/768 ; H01L29/423 ; H01L29/66 ; H01L29/78

Abstract:
A method for forming a crystalline high-k dielectric layer and controlling the crystalline phase and orientation of the crystal growth of the high-k dielectric layer during an anneal process. The crystalline phase and orientation of the crystal growth of the dielectric layer may be controlled using seeding sections of the dielectric layer serving as nucleation sites and using a capping layer mask during the anneal process. The location of the nucleation sites and the arrangement of the capping layer allow the orientation and phase of the crystal growth of the dielectric layer to be controlled during the anneal process. Based on the dopants and the process controls used the phase can be modified to increase the permittivity and/or the ferroelectric property of the dielectric layer.
Public/Granted literature
- US20230386827A1 SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURE Public/Granted day:2023-11-30
Information query
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