Invention Grant
- Patent Title: System for coupling a voltage to portions of a substrate
-
Application No.: US15710763Application Date: 2017-09-20
-
Publication No.: US10714372B2Publication Date: 2020-07-14
- Inventor: Thai Cheng Chua , Philip Allan Kraus , Travis Lee Koh , Christian Amormino , Jaeyong Cho
- 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: Patterson + Sheridan, LLP
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L21/683 ; H01J37/32 ; C23C16/511 ; C23C16/505 ; C23C16/458 ; C23C16/455 ; H01L21/67 ; H01L21/687 ; C23C16/50 ; C23C16/46 ; H01L21/02 ; H01L21/223 ; H01L21/3065

Abstract:
The present disclosure generally relates to plasma assisted or plasma enhanced processing chambers. More specifically, embodiments herein relate to electrostatic chucking (ESC) substrate supports configured to provide independent pulses of DC voltage through a switching system to electrodes disposed through the ESC substrate support, or to electrodes disposed on a surface of the ESC, or to electrodes embedded in the ESC substrate support. The switching system can independently alter the frequency and duty cycle of the pulsed DC voltage that is coupled to each electrode. During processing of the substrate, the process rate, such as etch rate or deposition rate, can be controlled independently in regions of the substrate because the process rate is a function of the frequency and duty cycle of the pulsed DC voltage. The processing uniformity of the process performed on the substrate is improved.
Public/Granted literature
- US20190088521A1 SYSTEM FOR COUPLING A VOLTAGE TO PORTIONS OF A SUBSTRATE Public/Granted day:2019-03-21
Information query
IPC分类: