Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Making plural separate devices
Reexamination Certificate
2007-03-20
2007-03-20
Smith, Matthew (Department: 2823)
Semiconductor device manufacturing: process
Packaging or treatment of packaged semiconductor
Making plural separate devices
C438S114000, C438S118000
Reexamination Certificate
active
10607274
ABSTRACT:
A wafer on which semiconductor elements, a multilevel interconnect layer, a bonding pad, a passivation film, and the like are formed is coated with a buffer coat film. Thereafter, the buffer coat film is patterned by exposure and development so that parts of the buffer coat film located on the bonding pads and scribe line regions and a part of the buffer coat film located on a periphery region of the wafer are removed, thereby forming apertures. The rear surface of the wafer is polished by polishing slurry with a surface protection tape bonded to the surface of the wafer by adhesive paste. In the periphery region, the apertures including the scribe line regions are blocked by the adhesive paste so that polishing slurry does not permeate.
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Matsuda Takayuki
Minamide Takahiro
Seo Satoshi
McDermott Will & Emery LLP
Nguyen Khiem
Smith Matthew
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