Method and apparatus to hold integrated circuit chips onto a chuck and to simultaneously remove multiple integrated circuit chips from a cutting chuck

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5953590
SERIAL NO

08990165

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A cutting chuck for use with a cutting blade and for holding a semiconductor wafer in place during a dicing process and a die pick for picking the segmented semiconductor wafer from the chuck. The chuck includes a surface for supporting the wafer and several ports in the surface connected to a vacuum source. Preferably, the cutting chuck includes a housing having a base and a wall. A vacuum chamber is provided within the housing and on top of the base. A porous layer is located in housing and above the vacuum chamber. A surface layer is above the porous layer and contains ports connecting the surface supporting the wafer to the vacuum chamber via the porous layer. In a most preferred embodiment, the chuck is removeably attached to the vacuum source via a check valve. The cutting chuck may also include recesses in the surface to prevent impingement on the cutting chuck by a cutting blade during wafer dicing. The die pick includes a pick head having a surface for contacting the plurality of die sawn from a wafer. The surface includes a plurality of ports that are in fluid communication with a vacuum source. The die pick picks the plurality of die from the chuck for further processing.

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Patent Owner(s)

Patent OwnerAddress
U S BANK NATIONAL ASSOCIATION AS COLLATERAL AGENT100 WALL STREET SUITE 1600 NEW YORK NY 10005

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Keith, Chris Caldwell, ID 3 47
Piper, John G Midvale, ID 7 134

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