US Patent No: 6,476,393

Number of patents in Portfolio can not be more than 2000

Surface state monitoring method and apparatus

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Abstract

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A surface state monitoring method and apparatus for performing in-situ monitoring of surface states of semiconductor substrates. The apparatus comprises condensing means 30 for condensing infrared radiation to an outer peripheral part of the substrate-to-be-monitored; control means 80 for controlling an incident angle of the infrared radiation condensed by the condensing means 30; condensing means 40 for condensing the infrared radiation which has undergone multiple reflection in the substrate-to-be-monitored; detecting means 50 for detecting the infrared radiation condensed by the infrared radiation condensing means 40, and analyzing means 60 for analyzing the detected infrared radiation detected and measuring contaminants staying on the surfaces of the substrate-to-be-monitored.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ADVANTEST CORPORATIONTOKYO1875
MIYAMOTO, NOBUOTOKYO, JP1
NIWANO, MICHIOTOKYO, JP1

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Endo, Michiaki Abiko, JP 22 99
Maeda, Yasuhiro Tokyo, JP 48 222
Miyamoto, Nobuo Kameoka, JP 10 64
Niwano, Michio 18-12, Sumiyoshidai Higashi 3-chome, Izumi-ku, Sendai-shi, Miyagi-ken, 981-3222, JP 3 16
Yoshida, Haruo Kanagawa, JP 90 522

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
5,381,234 Method and apparatus for real-time film surface detection for large area wafers 17 1993
5,386,121 In situ, non-destructive CVD surface monitor 11 1993
 
KLA-TENCOR CORPORATION (1)
5,910,842 Focused beam spectroscopic ellipsometry method and system 120 1996
 
Lockheed Martin Energy Systems, Inc. (1)
5,895,918 Apparatus for and method of performing spectroscopic analysis on an article 4 1998
 
MEMC ELECTRONIC MATERIALS, INC. (1)
5,550,374 Methods and apparatus for determining interstitial oxygen content of relatively large diameter silicon crystals by infrared spectroscopy 2 1994
 
Ramspec Corporation (1)
6,310,348 Spectroscopic accessory for examining films and coatings on solid surfaces 7 1999
 
RESEARCH DEVELOPMENT CORP., 50% ASSIGNED (1)
5,534,698 Solid state surface evaluation methods and devices 11 1994
 
SHIN-ETSU HANDOTAI CO., LTD. (1)
5,321,264 Method for evaluating surface state of silicon wafer 8 1992

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ADVANTEST CORPORATION (2)
6,657,196 Method and apparatus for environmental monitoring 13 2001
7,265,369 Method and system for detecting chemical substance 3 2002
 
RAYTEX CORPORATION (1)
7,616,300 Edge flaw detection device 0 2005
 
SAMSUNG ELECTRONICS CO., LTD. (1)
7,022,009 Air cleaning system for semiconductor manufacturing equipment 4 2004