Invention Grant
- Patent Title: Implant profiling with resist
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Application No.: US15093867Application Date: 2016-04-08
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Publication No.: US09633849B2Publication Date: 2017-04-25
- Inventor: Sameer P. Pendharkar , Binghua Hu
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Garner; Charles A. Brill; Frank D. Cimino
- Main IPC: H01L21/425
- IPC: H01L21/425 ; H01L21/70 ; H01L21/027 ; H01L21/266 ; H01L21/426 ; H01L21/02 ; H01L21/32 ; H01L21/8234 ; H01L29/66 ; H01L29/78

Abstract:
A process for forming at least two different doping levels at the surface of a wafer using one photo resist pattern and implantation process step. A resist layer is developed (but not baked) to form a first resist geometry and a plurality of sublithographic resist geometries. The resist layer is baked causing the sublithographic resist geometries to reflow into a continuous second resist geometry having a thickness less that the first resist geometry. A high energy implant implants dopants through the second resist geometry but not through the first resist geometry. A low energy implant is blocked by both the first and second resist geometries.
Public/Granted literature
- US20160225672A1 IMPLANT PROFILING WITH RESIST Public/Granted day:2016-08-04
Information query
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