Insulating film, printed circuit board substrate and printed...

Details Insulating film, printed circuit board substrate and printed... Insulating film, printed circuit board substrate and printed...

2008-12-30

2010-11-23

Bui, Hung S (Department: 2841)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C442S001000, C977S734000, C977S700000, C977S701000, C977S712000, C428S112000, C174S360000, C174S393000

Reexamination Certificate

active

07839647

ABSTRACT:
An insulating film includes a first polymer layer, a second polymer layer and an electromagnetic shielding layer sandwiched between the first polymer layer and the second polymer layer. The electromagnetic shielding layer includes a number of carbon nanotube films that are substantially parallel to the first and second polymer layer. Each of the carbon nanotube films includes a number of carbon nanotubes that are substantially parallel to each other. The insulating film can provide anti-EMI effect in printed circuit boards without employing additional electromagnetic shielding layers.

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patent: 2009/0227162 (2009-09-01), Kruckenberg et al.
patent: 03/013199 (2003-02-01), None

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