Patent ID: 8471237
Filing Date: 2013-06-25
Classification: G02B,H01L

Abstract:
1. A circuit board having a graphene circuit, comprising: a base substrate; a patterned aluminum oxide film formed on the base substrate, the patterned aluminum oxide film having a composition of Al a graphene film preferentially grown only on the patterned aluminum oxide film, the graphene film having one or more graphene atomic layers, the graphene film having a contact region that covers the recessed region, the graphene film growing parallel to the flat surface of the recessed region and parallel to an inner wall surface of each cone-shaped recess of the recessed region; and a patterned metal film, an entirety of the contact region being covered by a part of the patterned metal film and having electrical contact directly with the patterned metal film, the patterned metal film filling each recess covered by the graphene film.