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:
Nov. 29, 2016
Filed:
Aug. 21, 2012
Tzyy-jang Tseng, Hsinchu, TW;
Shu-sheng Chiang, Taipei, TW;
Tsung-yuan Chen, Taoyuan County, TW;
Unimicron Technology Corp., Taoyuan, TW;
Abstract
A manufacturing method of a circuit board is provided. A circuit substrate having a first surface and at least a first circuit is provided. A dielectric layer having a second surface and covering the first surface and the first circuit is formed on the circuit substrate. The dielectric layer is irradiated by a laser beam to form a first intaglio pattern, a second intaglio pattern and at least a blind via. A first conductive layer is formed in the first intaglio pattern, the second intaglio pattern and the blind via. A barrier layer and a second conductive layer are formed in the second intaglio pattern and the blind via. Parts of the second conductive layer, parts of the barrier layer and parts of the first conductive layer are removed until the second surface of the dielectric layer is exposed, so as to form a patterned circuit structure.