Patent ID: 9060420
Filing Date: 2015-06-16
Classification: G11B,H05K,Y10T

Abstract:
1. A method of manufacturing a flex circuit for a disk drive, the disk drive comprising a disk, a head actuated radially over the disk, and control circuitry, wherein the flex circuit is for electrically coupling the head to the control circuitry and comprises a substrate, the method comprising: etching an electrical coating applied to a first side of the substrate to form a first electrical lead; irradiating the first side of the substrate with radiation such that the first electrical lead masks the radiation from passing through the substrate to prevent curing of a photoresist applied to a second side of the substrate, wherein the photoresist is formed into an uncured photoresist and a cured photoresist on the second side of the substrate; removing the uncured photoresist from the second side of the substrate to form a groove; and filling the groove with electrically conductive material to form a second electrical lead.