Patent ID: 7484967
Filing Date: 2009-02-03
Classification: H01R,H05K

Abstract:
1. An optical module, comprising: an optical subassembly that includes a semiconductor optical device; an electronic circuit to communicate electrically with the semiconductor optical device; a host board on which the electronic circuit is disposed; and a flexible printed circuit board electrically connecting the optical subassembly with the host board, the flexible printed circuit board including a land region formed in a primary surface of the flexible printed circuit board, the whole land region facing and electrically in direct contact with the host board, a wiring pattern formed on a secondary surface opposite the primary surface and made of copper foil, and a via hole configured to be drawn from the land region and to connect the land region electrically to the wiring pattern in the secondary surface, wherein the flexible printed circuit board is bent at a boundary of the land region such that the primary surface is outside and a portion of the copper foil of the wiring pattern crossing a virtual plane extending from the boundary of the land region in the primary surface to the secondary surface is covered by a cover layer.