Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Reexamination Certificate
2006-04-04
2006-04-04
Nasri, Javaid H. (Department: 2839)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
Reexamination Certificate
active
07021943
ABSTRACT:
An optical transmission module comprising at least a photoelectric element, a printed circuit board and a flexible printed circuit board is provided. The flexible printed circuit board electrically connects the photoelectrical elements and the printed circuit board. At least a ground plane is formed on the flexible printed circuit board to reduce crosstalk and electromagnetic interference. Transmission lines and impedance formed on the flexible printed circuit board solve the problems of signal distortion and impedance mismatch. The flexible printed circuit board also serves as a flexible interface to solve prior problems of connection stress between the photoelectric element and the printed circuit board.
REFERENCES:
patent: 5513073 (1996-04-01), Block et al.
patent: 5742480 (1998-04-01), Sawada et al.
Chiu Chia Hung
Kao Min Sheng
Lee Shun Tien
Tsai Cheng Hung
Industrial Technology Research Institute
Nasri Javaid H.
Welsh & Katz Ltd.
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