Intermediate product for use in the production of thick-film circuits
AssigneeFord Motor Company
InventorsDaxesh K. Patel, Jay D. Baker
Life of this patent
Estimating the term…
Abstract
An intermediate product is provided and includes a substrate having at least one thick-film circuit formed thereon. An outer surface of a first portion of the thick-film circuit is coated with a readily removable protective material such as ethyl cellulose to protect the first portion from hot-slag substrate material generated during a laser scribing operation. The substrate also includes at least one uncoated portion which can be laser scribed for separation of the thick-film circuit from the remainder of the substrate. After laster scribing, the protective material is removed to permit visual inspection of the thick-film circuit.
Claims16
An intermediate product for use in the production of thick-film circuits comprising:
- a substrate;
- at least two conductor lines formed on said substrate;
- at least one resistor element formed on said substrate and over a portion of each of said two conductor lines;
- and
- a readily removable protective material formed over said resistor to protect said resistor from hot-slag substrate material generated during a laser scribing operation, said protective material being adapted for easy removal after said laser scribing operation.
An intermediate product comprising:
- a substrate;
- a thick-film circuit formed on said substrate;
- a readily removable protective material coated over an outer surface of a first portion of said thick-film circuit to protect said first portion from hot-slag substrate material generated during a laser scribing operation, said protective material being adapted for easy removal after said laser scribing operation;
- and
- said sustrate having at lest one uncoated portion on which said sustrate can be laser scribed for separation of said thick-film circuit from the remainder of said sustrate.
Dependencies are inferred from the claim text.