Active solid-state devices (e.g. – transistors – solid-state diode – With shielding
Reexamination Certificate
2008-04-15
2008-04-15
Ghyka, Alexander G. (Department: 2812)
Active solid-state devices (e.g., transistors, solid-state diode
With shielding
C257SE21242, C257SE21259, C438S781000, C438S795000
Reexamination Certificate
active
11058798
ABSTRACT:
A dielectric layer on a semiconductor substrate is made porous by radiation with UV light. The dielectric material contains a photosensitive moiety that absorbs UV radiation and dissociates from the dielectric material. The UV-activated material then may be diffused to create pores in the dielectric layer, and to provide a dielectric layer having a low dielectric constant.
REFERENCES:
patent: 6689684 (2004-02-01), You et al.
patent: 2004/0039153 (2004-02-01), Elce et al.
Ghyka Alexander G.
Trop Pruner & Hu P.C.
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