Laser adjustable capacitor and fabrication process

Details Laser adjustable capacitor and fabrication process Laser adjustable capacitor and fabrication process

1982-08-12

1984-03-27

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

29 2542, 338195, H01G 410, H01G 1000, H01G 700

Patent

active

044398140

ABSTRACT:
A thick film hybrid circuit capacitor particularly suitable for laser trimming and a process for its fabrication. The fabrication steps include the application of a green dam glass after the firing of the dielectric and top conductor of the capacitor to provide mechanical protection while allowing communication of the outside environment to the capacitor. In this way, a capacitor that is laser trimmed many weeks after fabrication and at humidity equilibrium will not suffer a sudden change of environment and attendant capacitance value change. After trimming the capacitor can be isolated from the outside environment by a traditional sealant protective material. The fabrication steps are also applicable for building a thick film hybrid crossover.

REFERENCES:
patent: 3267342 (1966-08-01), Pratt et al.
patent: 3490055 (1970-01-01), Cox
patent: 3669733 (1972-06-01), Allington
patent: 3996502 (1976-12-01), Bratschun
patent: 4297670 (1981-10-01), Solow
patent: 4301439 (1981-11-01), Johnson et al.
Electronic Design 25, 338-195, Nov. 1966, p. 40, Ruby Laser Process Controls Resistivity.

Affiliated with

Also associated with

Rating

Laser adjustable capacitor and fabrication process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser adjustable capacitor and fabrication process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser adjustable capacitor and fabrication process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1758930