Source: http://www.google.com/patents/US5822171?dq=7,603,356
Timestamp: 2015-05-27 10:36:52
Document Index: 351464756

Matched Legal Cases: ['application No. 95305847', 'application No. 95305850', 'application No. 95305850', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08']

Patent US5822171 - Electrostatic chuck with improved erosion resistance - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn electrostatic chuck (20) for holding a substrate (45) is described. One version of the chuck (20) suitable for mounting on a base (25), comprises (i) an electrostatic member (33) having an electrode (50) therein, and (ii) an electrical lead (60) extending through the base (25) to electrically engage...http://www.google.com/patents/US5822171?utm_source=gb-gplus-sharePatent US5822171 - Electrostatic chuck with improved erosion resistanceAdvanced Patent SearchPublication numberUS5822171 APublication typeGrantApplication numberUS 08/410,449Publication dateOct 13, 1998Filing dateMar 24, 1995Priority dateFeb 22, 1994Fee statusPaidAlso published asDE69502087D1, DE69502087T2, EP0734052A1, EP0734052B1, EP0734053A1, US6023405, US6557248Publication number08410449, 410449, US 5822171 A, US 5822171A, US-A-5822171, US5822171 A, US5822171AInventorsShamouil Shamouilian, Manoocher Birang, John F. Cameron, Chandra Deshpandey, Alfred Goldspiel, Ron Northrup, Semyon Shertinsky, Sasson SomekhOriginal AssigneeApplied Materials, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (42), Non-Patent Citations (16), Referenced by (32), Classifications (25), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetElectrostatic chuck with improved erosion resistance
US 5822171 AAbstract
An electrostatic chuck (20) for holding a substrate (45) is described. One version of the chuck (20) suitable for mounting on a base (25), comprises (i) an electrostatic member (33) having an electrode (50) therein, and (ii) an electrical lead (60) extending through the base (25) to electrically engage the electrode (50) of the electrostatic member (33). When the chuck (20) is used to hold a substrate (45) in a process chamber (80) containing erosive process gas, the substrate (45) covers and substantially protects the electrical lead (60) from erosion by the erosive process gas. In a preferred version of the chuck (20), an electrical connector (55) forming an integral extension of the electrode (50), electrically connects the electrode (50) to a voltage supply terminal (70) used to operate the chuck (20). The electrical connector (55) comprises (i) an electrical lead (60) that extends through the base (25), and (ii) an electrical contact (65) on the electrical lead (60), the contact sized sufficiently large to directly contact and electrically engage the voltage supply terminal (70). The electrode (50) of the chuck (20) can comprise first and second electrodes (130), (135) electrically isolated from one another by an electrical isolation void (52), the electrodes sized and configured so that the electrical isolation void (52) can serve as a cooling groove (105) for holding coolant for cooling the substrate (45) held on the chuck (20). Preferably, the two electrode chuck (20) is used in conjunction with a switching system capable of operating the chuck (20) in either a monopolar mode or in a bipolar mode. Erosion resistance of the chuck (20) is further enhanced by a masking gas assembly (115) which directs a masking gas at an exposed portion of the insulator (35), to protect the exposed portion of the insulator (35) from the erosive gas contained in the process chamber (80).
1. An electrostatic chuck for holding a substrate on a base, the chuck comprising:(a) an electrostatic member on the base and having an electrode therein; and (b) an electrical lead extending through the base, the electrical lead being an integral extension of the electrode, wherein the electrode and the electrical lead are fabricated from a unitary electrically conductive member. 2. The electrostatic chuck of claim 1, wherein the electrostatic member further includes (i) a lower insulative layer disposed on the base for receiving the electrode, and (ii) an upper insulative layer disposed on the electrode for receiving the substrate.
This application is a continuation-in-part of U.S. patent application Ser. No. 08/278,787, entitled "Electrostatic Chuck with Erosion Resistant Electrical Connector," filed Jul. 19, 1994, by Cameron, et al., now abandoned; which is a continuation-in-part of U.S. patent application Ser. No. 08/199,916 entitled "Electrostatic Chuck with Erosion-Resistant Electrode Connection," filed Feb. 22, 1994, by Shamouilian, et al., now abandoned. This application is related to U.S. patent application Ser. No. 08/199,402, entitled "Erosion Resistant Electrostatic Chuck," filed Feb. 22, 1994, by Shamouilian, et al. now abandoned; and Ser. No. 08/276,735, entitled "Electrostatic Chuck Having Improved Erosion Resistance," filed Jul. 18, 1994, by Shamouilian, et al., issued on Feb. 25, 1997, U.S. patent Ser. No. 5,606,485. All of these applications are incorporated herein by reference.
The electrostatic chuck of the present invention satisfies these needs. The electrostatic chuck can hold a substrate on a base, and comprises (i) an electrostatic member having an electrode therein, and (ii) an electrical lead extending through the base to electrically engage the electrode of the electrostatic member. When the chuck is used to hold a substrate in a process chamber containing erosive process gas, the substrate covers and substantially protects the electrical lead from erosion by the erosive process gas. Preferably, the electrical lead is an integral extension of the electrode.
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H01L21/3065, B25J15/06, C23C16/44, H01L21/683, H01L21/00, C23C16/458, H02N13/00, C23C16/455Cooperative ClassificationC23C16/4586, H01L21/6831, H01L21/6833, Y10T29/49117, Y10T279/23, C23C16/45521, H02N13/00, H01L21/67103European ClassificationH01L21/67S2H2, H02N13/00, C23C16/458D2F, H01L21/683C2, C23C16/455E2, H01L21/683CLegal EventsDateCodeEventDescriptionMar 23, 2010FPAYFee paymentYear of fee payment: 12Mar 28, 2006FPAYFee paymentYear of fee payment: 8Feb 14, 2002FPAYFee paymentYear of fee payment: 4Jul 3, 1995ASAssignmentOwner name: APPLIED MATERIALS, INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GOLDSPIEL, ALFRED;REEL/FRAME:007544/0179Effective date: 19950519Owner name: APPLIED MATERIALS, INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NORTHRUP, RON;REEL/FRAME:007544/0043Effective date: 19950519Owner name: APPLIED MATERIALS, INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHAMOUILIAN, SHAMOUIL;BIRANG, MANOOCHER;DESHPANDEY, CHANDRA;AND OTHERS;REEL/FRAME:007544/0171;SIGNING DATES FROM 19950519 TO 19950629Owner name: APPLIED MATERIALS, INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CAMERON, JOHN F.;REEL/FRAME:007544/0007Effective date: 19950518RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services