Electricity: electrical systems and devices – Electric charge generating or conducting means – Use of forces of electric charge or field
Reexamination Certificate
2003-06-17
2009-11-24
Nguyen, Danny (Department: 2836)
Electricity: electrical systems and devices
Electric charge generating or conducting means
Use of forces of electric charge or field
C361S230000
Reexamination Certificate
active
07623334
ABSTRACT:
An electrostatic chuck device provided with a dielectric plate with a surface embossed to give it a plurality of projections, an electrode, and an external power source, wherein substrate supporting surfaces of the plurality of projections are covered by conductor wiring and the conductor wiring electrically connects the substrate supporting surfaces of the plurality of projections. At the time of substrate processing, when the embossed projections contact the back of the substrate, the back of the substrate and the conductor wiring is made the same in potential due to the migration of the charges, the generation of force between the back of the substrate and the conductor wiring being in contact with the same is prevented, and a rubbing state between the two is prevented. Due to this, the electrostatic chuck device reduces the generation of particles, easily and stably removes and conveys substrates, and realizes a high yield and system operating rate.
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Ishihara Masahito
Miyazaki Naoki
Mizuno Shigeru
Wickramanayaka Sunil
Canon Anelva Corporation
Nguyen Danny
Oliff & Berridg,e PLC
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