Abstract:
Transfer films for firing which have the excellent property of transferring a functional pattern and enable a pyrolysis gas generated by the firing of organic substances to be released smoothly, and which can form on a substrate a functional pattern free from defects such as a shape or function failure. One of the transfer films for firing comprises a release film and a multilayered structure formed so as to be in contact with one of the surfaces of the release film. The multilayered structure includes both a pressure-sensitive adhesive layer for bonding the transfer film for firing to a surface of a substrate and a functional pattern formed between the release film and the pressure-sensitive adhesive layer. The functional pattern comprises inorganic particles and a first organic substance removable by firing, and the pressure-sensitive adhesive layer comprises a second organic substance removable by firing and different from the first organic substance. The heat decomposition temperature of the first organic substance (Tdb), the heat decomposition temperature of the second organic substance (Tda), and the fusion bonding temperature of the inorganic particles (Tw) each measured under the firing conditions to be used for firing the multilayered structure transferred to a surface of a substrate satisfy the relationship Tdb.
Abstract:
Methods of making metal/dielectric/metal structures (100) include casting metal slurry onto a fugitive substrate (105) to form the first electrode (110) and subsequently casting dielectric and metal slurries onto the first electrode (110), removing the fugitive substrate (105) and co-firing the structure, wherein the dielectric (120) comprises glass in an amount that is less than 20 weight% of the inorganic component of the dielectric (120) and the dielectric (120) achieves substantially complete densification. Alternatively, a metal tape and a dielectric tape, comprising glass in the above amount, may be formed and laminated together to form a metal/dielectric/metal green tape structure (100), which is co-fired, such that the structure achieves substantially complete densification.
Abstract:
Methods of making thin film capacitors formed on foil by forming onto a thin film dielectric in a single deposition event an integrally complete top electrode having a minimum thickness of at least 1 micron.
Abstract:
Methods of making capacitors are disclosed that comprise forming a dielectric layer over a substrate with a first electrode or a bare metallic foil, depositing a top conductive layer over the dielectric layer, and annealing the dielectric layer and the top conductive layer wherein the foil or first electrode, the dielectric, and the conductive layer form a capacitor.
Abstract:
The present invention relates to a method of making an embedded capacitor and a printed wiring board and includes providing a metallic foil (110); forming a first dielectric layer (128) over the metallic foil; forming a conductive layer (132) over at least a portion of the first dielectric layer; controlling an oxygen content of a controlled atmosphere; and firing the first dielectric layer and the conductive layer in a firing zone in the controlled atmosphere.
Abstract:
Water added to the furnace heated by an infrared or near-infrared radiation source used to fire thick-film electrical components provides finished components exhibiting desirable physical and electrical properties and surface cleanliness.
Abstract:
An apparatus and process for rapidly removing organic components from films. The apparatus comprises a heating chamber (13) having one or more heating elements (68). A pair of spaced-apart electrodes (76, 11) are provided for establishing an electric field in the heating chamber. The process comprises heating the film in the presence of the electric field to a temperature sufficient to cause the removal of organic components from the film.
Abstract:
Procédé de formation de circuits de résistance à film épais au cours duquel un métal non noble, par exemple du cuivre, nécessitant une atmosphère réductrice est inclu à un matériau de résistance nécessitant une atmosphère oxidante. Une pâte conductrice sans fritte (11, 12) avec un faible pourcentage d'argent est déposée et brûlée à l'air à basse température. Des résistances (13) sont ensuite déposées et brûlées à l'air. Par la suite, le matériau conducteur (11, 12) est réduit à une température suffisamment basse pour ne pas affecter négativement les résistances (13).