Thick-Film Hybrid Circuitry. Nanotechnology UEET103. Applications of Thick-Film processing. Sensors. High Temperature circuit boards. Displays. Technology. Screen Printing Viscometry Drying and Firing Thickness measurement Electrical Measurement Resistor trim. Screen Printing.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
High Temperature circuit boards.
Drying and Firing
Presco 435 Screen-Printer
1 mil alignment accuracy
Viscometer used to check the viscosity of a fluid or paste.
Drying furnaces are used to dry the paste prior to firing. The thickness should be measured after drying.
Firing furnace sinters (fuses) particles together.
Belt speed and heater temperature sets the profile.
Profilometer – uses a stylus to trace the thickness profile of a printed line.
Various methods are used to measure resistance and capacitance. LCR bridge will measure the impedance where a DC source monitor unit will measure the resistance.
Uses an infra-red laser to trim through a printed resistor – x,y trim stage.
Depends on mass transport and sintering to fuse into a contiguous film.
Conductors and insulators are both available. Semiconductors can also be used.
Alumina ceramic is commonly used as a substrate.
Lawrence Livermore National Laboratory7000 East Avenue, Livermore, CA 94550-9234S&TR Office: (925) 423-3432 Operated by the University of California for the U.S. Department of Energy
This image taken with a scanning electron microscope shows the three-dimensional grain structure of a Livermore transparent yttrium–aluminum–garnet ceramic sample.
Fig. 81: 2D reconstructions (virtual slices) perpendicular to the cylindrical axis showing Cu particles at different stages of the sintering process: (a) before sintering, (b) after sintering at 1000°C, and (c) after sintering at 1050°C. Identical regions (inside the rectangle of (a)) are shown at a higher magnification below
Principal Publication and AuthorsO. Lame (a), D. Bellet (a), M. Di Michiel (b) and D. Bouvard (a), European Materials Research Society 2002 Proceedings, to be published in Nuclear Instruments and Methods in Physics Research B.