X-ray or gamma ray systems or devices – Specific application – Lithography
Patent
1992-03-16
1994-08-02
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Lithography
378 34, 427249, G21K 500
Patent
active
053352564
ABSTRACT:
An X-ray mask support has an X-ray permeable film and a support frame supporting the film and the X-ray permeable film mainly includes a single-layer film having different densities in its thickness direction or a multi-layer laminate film of layers having different densities, but being constituted of compounds having the same main component. The X-ray mask support can be used as an X-ray mask structure for X-ray lithography by providing an X-ray absorber on the X-ray permeable film. The X-ray permeable film exhibits a high permeability for X-rays and visible
ear infrared rays and does not bend even by X-ray irradiation, thereby achieving X-ray exposure of high precision and high resolution.
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Iizuka Takashi
Maruyama Tomoko
Canon Kabushiki Kaisha
Chu Kim-Kwok
Porta David P.
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