Patent ID: 9459391
Filing Date: 2016-10-04
CPC Classification: G02B,H01L,Y10T

Claim Text:
1. An optical Printed Circuit Board (PCB) comprising: a support substrate; an insulation layer on the support substrate and having a first cavity and a second cavity; an optical waveguide filled in the insulation layer, the optical waveguide being disposed between the first cavity and the second cavity; a light emitting device disposed in the first cavity, directly contacting a first side surface of the optical waveguide and outputting an optical signal through the contacted first side surface; and a light receiving device disposed in the second cavity, directly contacting a second side surface of the optical waveguide and receiving the optical signal transmitted through the contacted second side surface; wherein a side surface of the light emitting device is aligned with the first side surface of the optical waveguide in a first vertical line, and a side surface of the light receiving device is aligned with the second side surface of the optical waveguide in a second vertical line; wherein the side surface of the light emitting device is in contact with the first side surface of the optical waveguide, and the side surface of the light receiving device is in contact with the second side surface of the optical waveguide; wherein the support substrate is divided into a first region, a second region, and a third region between the first region and the second region; wherein the insulation layer comprises: a first insulation layer disposed on the first region, the second region, and the third region; a second insulation layer disposed on portions of the first insulation layer disposed on the first region and the second region; and a third insulation layer disposed on the second insulation layer and the optical waveguide: wherein the optical waveguide is disposed on a portion of the first insulation layer on the third region, and wherein the second insulation layer has a thickness same as that of the optical waveguide.