Patent ID: 11877404
Assignee: AVERATEK CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of forming an electrical circuit comprising a substrate using a metal foil, the method comprising:
laminating a film to a surface of the substrate;
laminating a surface of the metal foil to the film;
removing the metal foil to expose a portion of the film or substrate; and
depositing a first conductor to the portion of the film or substrate;
wherein at least one of the film or substrate or metal foil is treated with a dry chemical treatment, wherein the dry chemical treatment comprises a corona discharge, or an electron beam;
wherein the laminating surface of the metal foil is roughened by chemical etching to form an average roughness (Ra) between 0.1 μm or more to 0.5 μm or less.