Invention Grant
- Patent Title: Self aligned active trench contact
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Application No.: US16167984Application Date: 2018-10-23
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Publication No.: US10665596B2Publication Date: 2020-05-26
- Inventor: Steven Alan Lytle
- 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 Andrew R. Ralston; Charles A. Brill; Frank D. Cimino
- Main IPC: H01L21/8238
- IPC: H01L21/8238 ; H01L27/11 ; H01L21/768 ; H01L21/283 ; H01L21/3205 ; H01L29/66 ; H01L21/8234 ; H01L27/118 ; H01L29/06 ; H01L27/092 ; H01L23/485 ; H01L27/02 ; H01L23/522 ; H01L23/535

Abstract:
An integrated circuit and method includes self-aligned contacts. A gapfill dielectric layer fills spaces between sidewalls of adjacent MOS gates. The gapfill dielectric layer is planarized down to tops of gate structures. A contact pattern is formed that exposes an area for multiple self-aligned contacts. The area overlaps adjacent instances of the gate structures. The gapfill dielectric layer is removed from the area. A contact metal layer is formed in the areas where the gapfill dielectric material has been removed. The contact metal abuts the sidewalls along the height of the sidewalls. The contact metal is planarized down to the tops of the gate structures, forming the self-aligned contacts.
Public/Granted literature
- US20190057969A1 SELF ALIGNED ACTIVE TRENCH CONTACT Public/Granted day:2019-02-21
Information query
IPC分类: