Patent ID: 6619786
Filing Date: 2003-09-16
Classification: B41J,H05K,Y10T

Abstract:
A tape automated bonding circuit for a printer cartridge, comprising:a flexible substrate having a first surface and a second surface and comprised of electrically insulating material; a plurality of electrically conductive traces affixed to said first surface of the flexible substrate; wherein said flexible substrate includes a chip window opening that is formed between said first and second surfaces by an internal edge in said flexible substrate that defines a closed perimeter; and wherein at least a subset of said plurality of electrically conductive traces forms pathways that terminate substantially adjacent to said internal edge; and a covercoat layer of electrically insulative material that is formed on the first surface of said flexible substrate, said covercoat layer having an edge boundary proximal to, but not touching, said internal edge of said flexible substrate; and wherein a position of said covercoat edge boundary is determined in reference to a position of said internal edge of said flexible substrate.