Invention Grant
- Patent Title: Lateral transistor with self-aligned body implant
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Application No.: US17357369Application Date: 2021-06-24
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Publication No.: US11887852B2Publication Date: 2024-01-30
- Inventor: Achim Gratz , Juergen Faul , Swapnil Pandey
- Applicant: Infineon Technologies Dresden GmbH & Co. KG
- Applicant Address: DE Dresden
- Assignee: Infineon Technologies Dresden GmbH & Co. KG
- Current Assignee: Infineon Technologies Dresden GmbH & Co. KG
- Current Assignee Address: DE Dresden
- Agency: Murphy, Bilak & Homiller, PLLC
- Priority: DE 2020117171.4 2020.06.30
- Main IPC: H01L21/265
- IPC: H01L21/265 ; H01L21/8234 ; H01L29/66 ; H01L29/78 ; H01L21/266 ; H01L29/10 ; H01L29/06

Abstract:
A method of manufacturing a lateral transistor is described. The method includes providing a semiconductor substrate. A dielectric layer is formed over the semiconductor substrate. A gate layer is formed over the dielectric layer. A photoresist layer is applied over the gate layer. The photoresist layer is opened by lithography to form a first opening of a first opening size in the photoresist layer. The first opening is transferred into a second opening of a second opening size, the second opening being either formed in the photoresist layer or in an auxiliary layer. A body region is formed in the semiconductor substrate by dopant implantation. Further the gate layer is structured to form a gate edge. An overlap between the structured gate layer and the body region is controlled by an offset between the first opening size and the second opening size.
Public/Granted literature
- US20210407806A1 LATERAL TRANSISTOR WITH SELF-ALIGNED BODY IMPLANT Public/Granted day:2021-12-30
Information query
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