Electric heating – Metal heating – By arc
Reexamination Certificate
2007-01-30
2007-01-30
Elve, M. Alexandra (Department: 1725)
Electric heating
Metal heating
By arc
C219S121670, C219S121760
Reexamination Certificate
active
10902897
ABSTRACT:
This invention relates to a method and apparatus for deflashing integrated circuit (IC) packages by laser irradiation. The method and apparatus include two lasers scanning flash area for performing deflashing operation. CO2laser is used to remove top layer of flash and YAG laser is used to remove the thin layer of flash remained after CO2laser deflashing. CO2laser deflashing and following YAG laser deflashing can effectively remove flash and avoid damage of heat sinks as well as leads and bars in the IC packages.
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An Chengwu
Hong Minghui
Lu Yong Feng
Song Wen Dong
Cooper & Dunham LLP
Data Storage Institute
Elve M. Alexandra
White, Esq. John P.
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