Invention Grant
- Patent Title: Electrostatic chuck device and sleeve for electrostatic chuck device
-
Application No.: US17911440Application Date: 2021-03-05
-
Publication No.: US12217994B2Publication Date: 2025-02-04
- Inventor: Nobuyoshi Yamazaki
- Applicant: Tomoegawa Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Tomoegawa Co., Ltd.
- Current Assignee: Tomoegawa Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Panitch Schwarze Belisario & Nadel LLP
- Priority: JP2020-055844 20200326
- International Application: PCT/JP2021/008815 WO 20210305
- International Announcement: WO2021/192935 WO 20210930
- Main IPC: H01L21/683
- IPC: H01L21/683 ; H01T23/00

Abstract:
An electrostatic chuck device containing a substrate, a stack stacked on an upper surface of the substrate in the thickness direction, and a ceramic layer stacked on an upper surface of the stack in the thickness direction. A sleeve formed from an insulating material is inserted into a through-hole that penetrates through the substrate and the stack in the thickness direction. The upper surface of the sleeve in the thickness direction has a two-level structure including a first upper surface positioned on the same plane as an upper surface of the substrate in the thickness direction, and a second upper surface positioned above the first upper surface in the thickness direction of the sleeve and disposed proximate to the ceramic layer. In a plan view, an edge portion of the stack is disposed on top of the first upper surface.
Public/Granted literature
- US20230115256A1 ELECTROSTATIC CHUCK DEVICE AND SLEEVE FOR ELECTROSTATIC CHUCK DEVICE Public/Granted day:2023-04-13
Information query
IPC分类: