Method of forming trimmable resistors
AssigneeIntermedics, Inc.
InventorKenneth R. Ulmer
Life of this patent
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Abstract
A method of forming trimmable resistors, resistor ray be embedded into a substrate. A portion of the resistor may be exposed, by segmenting the substrate, so that the resistor may be trimmed to a desired resistance level. Alternatively, a portion of a resistor may be embedded into a substrate, with another portion of the resistor being disposed on the outer surface of the substrate. The portion of the resistor on the outer surface may be trimmed to adjust the resistance of the resistor to a desired level.
Claims18
A method of forming a resistor comprising:
- providing a substrate having an opening therein and having an outer surface;
- disposing a first portion of electrically resistive material in the opening of the substrate;
- disposing a second portion of electrically resistive material on the outer surface of the substrate;
- segmenting the substrate through the opening and the first portion;
- and
- trimming the second portion of the electrically resistive material to form a resistor having a given resistance.
A method of forming a resistor, comprising:
- providing an opening in a substrate;
- disposing a first electrically resistive material in the opening;
- disposing a second electrically resistive material on a surface of the substrate in contact with the first electrically resistive material;
- segmenting the substrate through the opening to expose a portion of the first electrically resistive material;
- and
- trimming at least one of the second electrically resistive material and the exposed portion of the first electrically resistive material.
A method of forming a resistor in a cardiac stimulator, comprising:
- providing a substrate that has an opening and an outer surface in a cardiac stimulator;
- disposing a first electrically resistive material in the opening;
- disposing a second electrically resistive material on the outer surface and in contact with the first electrically resistive material;
- segmenting the substrate through the opening and the first electrically resistive material;
- and
- trimming at least one of the first electrically resistive material and the second resistive material to form a resistor having a given resistance.
Dependencies are inferred from the claim text.