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US 6,187,372 B1Granted
Method for producing large area thick film resistors with uniform thickness
AssigneeAgilent Technologies, Inc.
InventorsRosemary O Johnson, John F Casey, Lewis R Dove
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Abstract
A method for creating large area, thick film resistors with improved predictability and uniformity. “Tent poles” are employed during the printing of the large area resistors to prop up the screen mesh to ensure the resultant resistor does not have a scooped out center portion. The tent poles can be made from gold pads, resistor spots or emulsion spots.
Claims4
A method for printing a large area resistor comprising the steps of:
- (1) printing an emulsion on a substrate, the emulsion print having a void of predetermined width;
- (2) placing a tent pole in the void;
- (3) laying down a screen mesh above the emulsion and tent pole;
- and
- (4) using a squeegee to produce the large area resistor having a uniform thickness while retaining said tent pole in said large area resistor.
2 more elements
Dependencies are inferred from the claim text.