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US 6,386,687 B1Granted
Barrier adhesion by patterning gold
AssigneeHewlett-Packard Company
InventorClayton L. Holstun
Life of this patent
Estimating the term…
Abstract
An ink jet printhead including a thin film substructure including a plurality of elongated gold traces having openings formed therein. An ink barrier layer is disposed on the thin film substructure in contact with the gold traces and the regions exposed by the openings in the elongated gold traces. The openings are configured to provide for reliable adhesion between the ink barrier layer and the regions exposed by the openings in the elongated gold traces.
Claims27
An ink jet printhead comprising:
- a thin film substructure including an elongated patterned gold trace disposed on a top portion thereof and having a plurality of ink firing heater resistors defined therein;
- a plurality of openings formed in said elongated gold trace such that regions of said thin film substructure underlying said openings are exposed;
- an ink barrier layer disposed on said thin film substructure and in contact with said elongated gold trace and said exposed regions;
- and
- said openings in said elongated gold trace configured to provide reliable adhesion between said ink barrier layer and said exposed regions.
2 more elements
An ink jet printhead comprising:
- a thin film substructure including an elongated patterned gold trace on a top portion thereof and having a plurality of heater resistors formed therein;
- said plurality of heater resistors defined in a plurality of thin film layers;
- a plurality of openings formed in said elongated gold trace such that regions of said thin film substructure underlying said openings are exposed, said regions comprising tantalum regions;
- an ink barrier layer disposed on said thin film substructure so as to be in contact with said elongated gold trace and said tantalum regions;
- and
- said openings in said elongated gold trace configured to provide reliable adhesion between said ink barrier layer and said exposed tantalum regions.
3 more elements
An ink jet printhead comprising:
- a thin film substructure including an elongated patterned gold trace on a top portion thereof and having a plurality of ink firing heater resistors defined therein;
- a plurality of openings formed in said elongated gold trace such that regions of said thin film substructure underlying said openings are exposed, said regions comprising silicon dioxide regions;
- an ink barrier layer disposed on said substructure so as to be in contact with said elongated gold trace and said silicon dioxide regions;
- and
- said openings in said elongated gold trace configured to provide reliable adhesion between said ink barrier layer and said silicon dioxide regions.
2 more elements
An ink jet printhead comprising:
- a thin film substructure including an elongated patterned gold trace on a top portion thereof and having a plurality of ink firing heater resistors defined therein;
- said elongated patterned gold trace having a non-linear edge extending between longitudinally separated ends of said gold trace;
- an ink barrier layer disposed on said substructure so as to be in contact with said elongated gold traces and regions of said thin film substructure that are adjacent said non-linear edge;
- and
- said non-linear edge configured to provide reliable adhesion between said ink barrier layer and said regions adjacent said non-linear edge.
2 more elements
Dependencies are inferred from the claim text.