Patent ID: 8644656
Filing Date: 2014-02-04
Classification: G02B,H01L,H05K

Abstract:
1. An optical waveguide laminated wiring board, comprising: a wiring board including a pad for connection; a first cladding layer which is formed on a surface of the wiring board to cover the pad and which includes a first via hole formed therein to reach the pad; a first conductor portion which is filled in the first via hole and which includes a projecting portion to project from a surface of the first cladding layer and spread semispherically thereon; a core layer formed on the first cladding layer in a region other than a portion where the first conductor portion is formed on the first cladding layer and neighboring the portion; a second cladding layer which is formed on the first cladding layer and the core layer so as to cover the first conductor portion and which includes a second via hole being formed in the second cladding layer to reach the projecting portion of the first conductor portion; and a second conductor portion which is filled in the second via hole to connect to the projecting portion of the first conductor portion.