Flexible Circuit Electrode Array

Abstract

A flexible circuit electrode array, which comprises: a polymer base layer; metal traces deposited on said polymer base layer, including electrodes suitable to stimulate neural tissue; a polymer top layer deposited on said polymer base layer and said metal traces; and a partial or entire coating of the base and top layer by a soft polymer. A method of preparing a flexible circuit electrode array, comprising: (a) providing a first soft polymer layer; (b) depositing a first a base layer on the first soft polymer layer; (c) providing a metal thin film on the base layer; (d) depositing a top polymer layer on the metal thin film; (e) providing holes in the top polymer layer; (f) depositing a second soft polymer layer on the top polymer layer; (g) providing holes in the second soft polymer layer for bond pads and electrodes; and (h) preparing electrodes in the provided holes. A method of preparing a flexible circuit electrode array, comprising: (a) providing a first soft polymer layer; (b) depositing a first a base layer on the first soft polymer layer; (c) providing a metal thin film on the base layer; (d) depositing a top polymer layer on the metal thin film; (e) depositing a second soft polymer layer on the top polymer layer; (f) providing holes in the second soft polymer layer and in the top polymer layer for bond pads and electrodes; and (g) preparing electrodes in the provided holes.

Dependencies are inferred from the claim text.