Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
Reexamination Certificate
2007-08-17
2010-06-08
Garber, Charles D (Department: 2812)
Semiconductor device manufacturing: process
Coating with electrically or thermally conductive material
To form ohmic contact to semiconductive material
C438S641000, C438S674000, C438S675000, C257SE21476
Reexamination Certificate
active
07732329
ABSTRACT:
In some embodiments, a workpiece-surface-influencing device preferentially contacts the top surface of the workpiece, to chemically modify the surface at desired field areas of the workpiece without affecting the surfaces of cavities or recesses in the field areas. The device includes a substance which is chemically reactive with material forming the workpiece surface. The substance can be in the form of a thin film or coating which contacts the surface of the workpiece to chemically modify that surface. The workpiece-surface-influencing device can be in the form of a solid state applicator such as a roller or a semi-permeable membrane. In some other embodiments, the cavities are filled with material that prevents surface modification of the cavity surfaces while allowing modification of the field areas, or which encourages surface modification of the cavity surfaces while preventing modification of the field areas. The modified surface facilitates selective deposition of materials on the workpiece.
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Garber Charles D
IPGRIP, LLC
Knobbe Martens Olson & Bear LLP
Roman Angel
LandOfFree
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