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:
Aug. 02, 2005
Filed:
Feb. 24, 2003
Tien-min LU, Hsien-Tien, TW;
Ching-hsiang Chen, Hsin-Tien, TW;
Tien-Min Lu, Hsien-Tien, TW;
Ching-Hsiang Chen, Hsin-Tien, TW;
Shin Jiuh Corp., Taipei Hsien, TW;
Abstract
A waterproof structure is used with a printed circuit board, which is primarily composed of an upper layer membrane, a lower layer membrane, and an insulation layer, which are conjoined to one another. Besides, at least one first channel and second channel are provided on the upper layer membrane and the lower layer membrane respectively and correspondingly. Also, a pressure-adjusting hole, whose periphery is larger than that of the first channel and the second channel, is provided on the insulation layer corresponding to the positions of the first channel and the second channel. After the first channel, the second channel, and the pressure-adjusting hole of the insulation layer have been conjoined, a waterproof unit will be formed at a place where the contact points of the three are not connected to one another. The waterproof unit contains circulated air and prevents moisture from permeating into the circuit board thereby avoiding a short circuit of the circuit board.