Invention Grant
- Patent Title: Integrated cleaning process for substrate etching
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Application No.: US16224699Application Date: 2018-12-18
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Publication No.: US11521838B2Publication Date: 2022-12-06
- Inventor: Yi Zhou , Seul Ki Ahn , Seung-Young Son , Li-Te Chang , Sunil Srinivasan , Rajinder Dhindsa
- Applicant: APPLIED MATERIALS, INC.
- Applicant Address: US CA Santa Clara
- Assignee: APPLIED MATERIALS, INC.
- Current Assignee: APPLIED MATERIALS, INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Lowenstein Sandler LLP
- Main IPC: H01J37/32
- IPC: H01J37/32 ; H01L21/3065 ; H01L21/67 ; H01L21/683 ; C23C16/44 ; B08B7/00

Abstract:
A method for removing etchant byproduct from an etch reactor and discharging a substrate from an electrostatic chuck of the etch reactor is provided. A substrate may be electrostatically secured to an electrostatic chuck within a chamber of an etch reactor. A first plasma may be provided into the chamber to etch the substrate, causing an etchant byproduct to be generated. After the etching is complete, a second plasma may be provided into the chamber, wherein the second plasma is an oxygen containing plasma. The etchant byproduct may be removed and the first substrate may be discharged using the second plasma. The first substrate may be removed from the chamber and a second substrate may be inserted into the chamber without first performing an in-situ cleaning between the removal of the first substrate and the insertion of the second substrate.
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