摘要:
A ceramic substrate 1 made of magnetic substance on which an inductor 2 is formed is prepared. A ceramic substrate 3 made of dielectric substance on which a capacitor 4 is formed is also prepared. An intermediate layer 5 made of lass paste is printed on the inductor 2 and the capacitor 4. After debinding the substrates 1 and 3 independently, both the substrates are filed with the intermediate layer 5 therebetween so that both the substrates may be glued and integrated. As such, because the debinding process is provided before filing, less gas is generated in firing, and as a result, voids are restrained from occurring.
摘要:
A paste of the present invention comprises a precious metal organic acid salt added to precious metal powder as a precious metal component of the conductive paste. The base metal organic acid salts are also used instead of base metal components in the inorganic binders to exclude particles with larger diameters from the conductive paste. The conductive paste of the present invention allows the lumps in the paste caused by the insufficient dispersion to be 10 &mgr;m &PHgr; or less, thereby remarkably reducing the screen blockage during screen printing of wiring pattern of 100 &mgr;m or less in width.
摘要:
The present invention provides a method of manufacturing a low-temperature sintering multilayer ceramic wiring board comprising the steps of: forming a wiring layer by printing conductive paste (4) on an unfired green sheet (1); forming a laminate by laminating, on at least one side of a ceramic substrate, the unfired green sheet having the wiring layer; and firing the laminate. The present invention also provides paste for use with this method. In the firing step, after an adhesive layer (8) or binder resin in said green sheet used for lamination burns, glass ceramic in the green sheet starts to sinter, and upon or after the start of sintering of the glass ceramic, conductive particles in the conductive paste starts to sinter. This manufacturing method can provide an precise wiring board without pattern deformation and also provide a low-temperature ceramic multilayer wiring board that has no cracks in the glass ceramic on the periphery of electrodes and has electrodes of a dense film structure.
摘要:
The present invention relates to a manufacturing method of a ceramic substrate used in various electronic appliances, and more particularly to a manufacturing method of a ceramic substrate forming a conductor pattern by intaglio printing. A conductive paste is supplied in the intaglio by using any one of screen mask, metal mask, or drawing device, and therefore the conductive paste can be supplied uniformly in desired positions only. The supplying amount of the conductive paste can be adjusted by repeating printing, so that an optimum amount can be set depending on the pattern. As a result, a fine wiring pattern of thick film can be easily formed, and a ceramic circuit board low in wiring resistance, high in wiring density, and high in dimensional precision of wiring pattern can be obtained.
摘要:
A method of manufacturing electronic components using intaglio transfer printing for improving printing yield. Intaglio 1 having a dual releasing layer structure is used. In this structure, first releasing layer 2 is formed on the surface of intaglio 1 by chemical absorption, and second releasing layer 3 is formed on the first releasing layer by physical adsorption. This structure allows intaglio 1 to have stable releasing ability, thereby improving the printing yield. In addition, because second releasing layer 3 can be added as required, the printing yield is not decreased even when the intaglio is repeatedly used for printing. Furthermore, the dual releasing layer structure can improve durability of the releasing ability of intaglio 1. As a result, patterns for electronic components can be formed on substrates at an excellent yield.
摘要:
In a method of manufacturing an electronic component for forming a conductor pattern on an insulating substrate by transfer method employing intaglio printing technique, this manufacturing method comprises a step of fabricating an intaglio 20 made of flexible resin forming an insulating layer 23 on a groove 21, a step of filling the groove 21 with Ag paste 24 and drying, a step of overlaying the intaglio 20 on an insulating substrate 2 having a water-soluble resin 28 formed on the surface by pressing a pressing portion 26, freezing, peeling off the intaglio 20 and insulating substrate 2, and transferring the pattern of the Ag paste 24, and a step of firing it and forming a conductor pattern.
摘要:
The conductive particles can be sintered without being influenced by softening and removing of the adhesive layer. As a result, a wiring pattern of high precision can be formed without causing deformation of conductive pattern. It includes a step of filling grooves having a wiring pattern on a film with a conductive paste containing conductive component and resins, a step of adhering the conductive paste side surface of the film having the conductive paste to the adhesive layer side surface of the ceramic substrate having the adhesive layer, a step of forming a conductive pattern on the adhesive layer surface by peeling off the film substrate from a first laminated body having the film, conductive paste, adhesive layer, ceramic substrate, and film, and transferring the conductive paste filling up the grooves onto the surface of the adhesive layer, and a step of firing a second laminated body having the ceramic substrate, adhesive layer and conductive pattern, removing the adhesive layer, and sintering the conductive particles, in which the conductive component in the conductive paste is sintered at least (i) after the adhesive layer is softened, or (ii) after the adhesive layer is burnt.
摘要:
An LED assembly including a wiring substrate with an opening at its center; a heat sink housed inside the opening; an LED chip mounted on the heat sink; a connecting section for electrically coupling the LED chip and wiring substrate; and a transparent resin covering the LED chip and connecting section. Heat generated from the LED chip is efficiently dissipated, and high productivity is also achievable.
摘要:
The present invention provides a circuit substrate which has a substrate including a first surface and a second surface opposite to the first surface. A first and a second conductor patterns are formed on the first and the second surface respectively. The second surface has larger surface roughness than the first surface. When the circuit substrate is mounted on another substrate, it is mounted to the other substrate via the second surface. The circuit substrate is capable of mounting a device or being mounted on another substrate to form an apparatus.
摘要:
A method of fabricating electronic parts is provided which is capable of forming fine patterns with high accuracy as well as easily fabricating a multilayered structure of a conductor pattern with high performance. The disclosed method includes the steps of forming a pattern on a surface of a flexible resin sheet by laser process, and then forming a release layer on the surface of the thus obtained pattern, thereby forming an intaglio plate. Next, the intaglio plate is filled with Ag paste, dried and laminated onto an insulating substrate, on which a thermoplastic resin layer is formed. Thereafter, the intaglio plate is peeled from the substrate so that the pattern of the paste is transferred thereon, and a conductor pattern is formed. Further, an insulating layer is formed to cover the conductor pattern and another conductor pattern is formed on the insulating layer, thereby forming a multilayered structure.