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:
Jul. 31, 2018
Filed:
Feb. 08, 2017
Unimicron Technology Corp., Taoyuan, TW;
Ming-Hao Wu, Taoyuan, TW;
Wen-Fang Liu, Taoyuan, TW;
Unimicron Technology Corp., Taoyuan, TW;
Abstract
A circuit board structure includes an inner circuit structure and a first build-up circuit structure. The inner circuit structure includes a core layer having an upper surface and a lower surface opposite to each other, a first patterned circuit layer disposed on the upper surface, a second patterned circuit layer disposed on the lower surface and a conductive via connecting the first and the second patterned circuit layers. The first build-up circuit structure is disposed on the upper surface of the core layer and covers the first patterned circuit layer, wherein the first build-up circuit structure at least has a cavity, the cavity exposes a portion of the first patterned circuit layer and a cross-sectional profile of an edge of a top surface of the portion of the first patterned circuit layer exposed by the cavity is a curved surface.