Electrical circuit for wide-array inkjet printhead assembly
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid McElfresh, Noah Carl Lassar, Mohammad Akhavain, Brian J. Keefe, Joseph E. Scheffelin, Janis Horvath, Dale Dean Timm, Jr.
Life of this patent
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Abstract
A wide-array inkjet printhead assembly includes a carrier having a first side and a second side contiguous with the first side, and a plurality of printhead dies each mounted on the first side of the carrier. An electrical circuit is disposed on the first side and the second side of the carrier. As such, a plurality of electrical connectors are each electrically coupled to the electrical circuit and one of the printhead dies.
Claims14
An inkjet printhead assembly, comprising:
- a carrier having a first side and a second side, the second side contiguous with the first side;
- a plurality of printhead dies each mounted on the first side of the carrier;
- a flexible electrical circuit having a first portion disposed on the first side of the carrier and a second portion disposed on the second side of the carrier, a plurality of openings defined in the first portion, the openings sized to accommodate the printhead dies;
- at least one bond pad formed on the first portion of the flexible electrical circuit adjacent to one of the openings defined in the first portion, the bond pad in electrical communication with an electrical contact formed on the second portion of the flexible electrical circuit;
- and
- a wire bond electrically connecting the bond pad to one of the printhead dies.
A method of forming an inkjet printhead assembly, the method comprising the steps of:
- providing a carrier having a first side and a second side, the second side contiguous with the first side;
- mounting a plurality of printhead dies on the first side of the carrier;
- disposing a flexible electrical circuit on the first side and the second side of the carrier, the electrical circuit having a first portion disposed on the first side of the carrier and a second portion disposed on the second side of the carrier, a plurality of openings defined in the first portion, the openings sized to accommodate the printhead dies;
- and
- electrically coupling a plurality of bond pads on the first portion of the flexible electrical circuit to at least one of the printhead dies with wirebonds.
Dependencies are inferred from the claim text.