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.
Patent No.:
Date of Patent:
Feb. 27, 2007
Filed:
Feb. 11, 2005
Applicants:
Shih-chieh Chao, Taipei, TW;
Chih-wen Huang, Taipei, TW;
Chun-lin Liao, Taipei, TW;
Inventors:
Assignee:
Tatung Co., Ltd., , TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 1/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
A multi-layer printed circuit board having a low noise characteristic, the multi-layer printed circuit board includes: at least one circuit layer; at least one isolation line for dividing the at least one circuit layer into at least two areas, the at least one isolation line forms an open pattern and the at least one isolation line extendedly forms a long neck line into the at least one area, and an internal opening of the long neck line located at a geometric center of the at least one area to improve the isolation, especially for the noises near the resonant frequencies of the isolation areas.