Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Including contaminant removal or mitigation
Reexamination Certificate
2007-09-04
2007-09-04
Lebentritt, Michael (Department: 2812)
Semiconductor device manufacturing: process
Packaging or treatment of packaged semiconductor
Including contaminant removal or mitigation
C438S106000, C438S455000, C257SE21499
Reexamination Certificate
active
11029351
ABSTRACT:
In an unnecessary matter removal method of joining a separation tape onto a semiconductor wafer and, then, separating the separation tape from the semiconductor wafer, thereby separating an unnecessary matter on the semiconductor wafer together with the separation tape, the separation tape is separated from the semiconductor wafer in such a manner that an edge member is brought into contact with the separation tape joined to the semiconductor wafer, and a tip end of the edge member is pressed to the semiconductor wafer at a separation completion end portion where the unnecessary matter is separated from the wafer.
REFERENCES:
patent: 5961768 (1999-10-01), Tsujimoto
patent: 2005/0061425 (2005-03-01), Yamamoto
patent: 2006/0089004 (2006-04-01), Yamamoto
patent: 2002-124494 (2002-04-01), None
Lebentritt Michael
Lee Cheung
Nitto Denko Corporation
Rader & Fishman & Grauer, PLLC
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