Invention Grant
- Patent Title: Electrostatic chuck
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Application No.: US18121627Application Date: 2023-03-15
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Publication No.: US12341050B2Publication Date: 2025-06-24
- Inventor: Akihito Ono , Tetsuro Itoyama , Tomoki Umetsu , Jumpei Uefuji
- Applicant: TOTO LTD.
- Applicant Address: JP Kitakyushu
- Assignee: TOTO LTD.
- Current Assignee: TOTO LTD.
- Current Assignee Address: JP Kitakyushu
- Agency: Carrier, Shende & Associates P.C.
- Agent Fulchand P. Shende; Joseph P. Carrier
- Priority: JP2022-053876 20220329,JP2022-154960 20220928
- Main IPC: H01L21/683
- IPC: H01L21/683 ; H01J37/32 ; H05B3/26

Abstract:
An electrostatic chuck includes a base plate, a first heater element, and a plurality of first power feeding terminals. The base plate includes a communicating path having a spiral shape. The first heater element includes a plurality of first zones. The plurality of first power feeding terminals feeds power to the plurality of first zones. Each of the plurality of first zones includes a first heater line and a pair of first power feeding portions feeding power to the first heater line. The pair of first power feeding portions is electrically connected to the plurality of first power feeding terminals. The plurality of first power feeding terminals includes a first and a second annular portion. The communicating path includes a first circumferential portion surrounding the second annular portion between the first annular portion and the second annular portion when viewed along a stacking direction.
Public/Granted literature
- US20230317495A1 ELECTROSTATIC CHUCK Public/Granted day:2023-10-05
Information query
IPC分类: