Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2008-03-18
2008-03-18
Ngo, Hung V. (Department: 2831)
Metal working
Method of mechanical manufacture
Electrical device making
C029S592100
Reexamination Certificate
active
10821304
ABSTRACT:
An electromagnetic interference (EMI) shielding filter includes a conductive pattern for shielding electromagnetic waves; and blackened layers formed on a surface of the conductive pattern. The electromagnetic interference (EMI) shielding filter is manufactured by preparing a base film; forming on the base film a first blackened layer, a conductive layer, and a second blackened layer in sequence; and patterning the first blackened layer, the conductive layer, and the second blackened layer by using a same mask, and forming on front and rear surfaces of an EMI shielding layer a conductive pattern comprising the first and second blackened layers.
REFERENCES:
patent: 4760456 (1988-07-01), Liang
patent: 2004/0231873 (2004-11-01), Shimamura et al.
Cha Hong Rae
Chang Myeong Soo
Kim Kyung Ku
Kim Young Sung
Ryu Byung Gil
Lee Hong Degerman Kang & Schmadeka
LG Electronics Inc.
Ngo Hung V.
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