The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 10, 2006

Filed:

Mar. 01, 2004
Applicants:

Deok-heung Kim, Yongin-si, KR;

Bong-hui Lee, Yongin-si, KR;

Inventors:

Deok-heung Kim, Yongin-si, KR;

Bong-hui Lee, Yongin-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 1/00 (2006.01); H05K 1/03 (2006.01);
U.S. Cl.
CPC ...
Abstract

A flexible printed circuit board (FPCB) which prevents a short circuit due to a crack in a bending portion is provided. The FPCB includes an end portion, a bending portion extended from the end portion, and a circuit portion extended from the bending portion. The improved FPCB includes a base film which is flexible and comprises a first via-hole formed adjacent to the end portion and the bending portion and a second via-hole formed adjacent to the bending portion and the circuit portion, a first conductive layer formed on an outer surface of at least the end portion and the bending portion, a cover layer formed on the first conductive layer, a second conductive layer which is formed on an inner surface of the end portion and is electrically connected to the first conductive layer through the first via-hole, and a third conductive layer which is formed on an inner surface of the extension circuit portion and is electrically connected to the first conductive layer through the second via-hole.


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