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:
Mar. 17, 2015
Filed:
Feb. 26, 2013
Unimicron Technology Corp., Taoyuan, TW;
Pei-Chang Huang, Taoyuan County, TW;
Wen-Fang Liu, Taoyuan County, TW;
Cheng-Po Yu, Taoyuan County, TW;
Unimicron Technology Corp., Taoyuan, TW;
Abstract
A circuit board, a manufacturing method thereof, and an electro-optic apparatus having the circuit board are provided. The circuit board includes a substrate including a first dielectric layer and a first circuit layer disposed thereon, a waveguide layer disposed on a portion of the substrate, a second dielectric layer, a convex structure and a second circuit layer. The second dielectric layer is disposed on the substrate and the waveguide layer. The second dielectric layer has an opening exposing the sidewall of the waveguide layer and a portion of the first circuit layer. The convex structure is disposed on the sidewall of the waveguide layer. The convex structure and the waveguide layer respectively have refractive index nand n, and |n−n|/n<1%. The surface roughness of the convex structure is less than that of the sidewall of the waveguide layer. The second circuit layer is disposed on the second dielectric layer.