Abstract:
There is disclosed a method for applying a first metal on paper, which method comprises the steps a) producing polymers on the surface of said paper, said polymers comprising carboxylic groups and adsorbed ions of at least one second metal, said ions being adsorbed at a pH above 7, b) reducing said ions to the second metal and c) depositing said first metal on the reduced ions of said second metal. The invention further comprises objects manufactured according to the method. Advantages of the present invention include improved adhesion of the metal coating, possibility to coat many difficult materials. The process is suitable for large-scale and continuous production and it will reduce the waste of metal. Circuits manufactured according to the invention display improved signal integrity. Also there is the possibility to manufacture circuits which are built up sequentially with several layers of conductors in distinct patterns. It is also possible to manufacture of circuits with a very small line width.
Abstract:
A capacitor built-in substrate of the present invention includes; a base resin layer (50); a plurality of capacitors (C) arranged side by side in a lateral direction in a state that the capacitors (C) are passed through the base resin layer (50), each of the capacitors (C) constructed by a first electrode (20) provided to pass through the base resin layer (50) and having projection portions (54, 56) projected from both surface sides of the base resin layer (50) respectively such that the projection portion (54) on one surface side of the base resin layer (50) serves as a connection portion (21), a dielectric layer (22) for covering the projection portion (56) of the first electrode (20) on other surface side of the base resin layer (50), and a second electrode (24) for covering the dielectric layer (22); a through electrode (T) provided to pass through the base resin layer (50) and having projection portions (54, 56a) projected from both surface sides of the base resin layer (50) respectively; and a built-up wiring (72, 72a) formed on the other surface side of the base resin layer (50) and connected to the second electrodes (24) of the capacitors (C) and one end side of the through electrode (T).
Abstract:
A multilayer printed board comprising a plurality of capacitive coupling layers (6) each consisting of a dielectric layer (4) and a power supply layer (3) and a ground layer (5) facing each other while sandwiching the dielectric layer (4), first vias (7) connecting between the power supply layers (3) included in the plurality of capacitive coupling layers (6), and second vias (8) connecting between the ground layers (5) included in the plurality of capacitive coupling layers (6).
Abstract:
Method for manufacturing a parylene-based electrode array that includes an underlying parylene layer, one or more patterned electrode layers comprising a conductive material such as a metal, and one or more overlying parylene layers. The overlying parylene is etched away or otherwise processed to expose the electrodes where stimulation or recording is to occur. All other conductive material in the device is occluded from the environment by the two layers of parylene surrounding it.
Abstract:
The present invention is directed to a dielectric thin film composition comprising: (1) one or more barium/titanium-containing additives selected from (a) barium titanate, (b) any composition that can form barium titanate during firing, and (c) mixtures thereof; dissolved in (2) organic medium; and wherein said thin film composition is doped with 0.002 - 0.05 atom percent of a dopant comprising an element selected from Sc, Cr, Fe, Co, Ni, Ca, Zn, Al, Ga, Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Yb, Lu and mixtures thereof and to capacitors comprising such compositions.
Abstract:
A multilayer printed wiring board 10 includes: a mounting portion 60 on the top surface of which is mounted a semiconductor element that is electrically connected to a wiring pattern 32, etc.; and a capacitor portion 40 having a high dielectric constant layer 43, formed of ceramic and first and second layer electrodes 41 and 42 that sandwich the high dielectric constant layer 43. One of either of the first and second layer electrodes 41 and 42 is connected to a power supply line of the semiconductor element and the other of either of the first and second layer electrodes 41 and 42 is connected to a ground line. In this multilayer printed wiring board 10, high dielectric constant layer 43 included in the layered capacitor portion 40, which is connected between the power supply line and the ground line, is formed of ceramic. With this structure, the static capacitance of the layered capacitor portion 40 can be high, and an adequate decoupling effect is exhibited even under circumstances in which instantaneous potential drops occur readily.
Abstract:
A multilayer substrate device formed from a base substrate (12) and alternating metalization layers (14) and dielectric layers (16). Each layer is formed without firing. Vias (44) may extend through one of the dielectric layers (16) such that two metalization layers (14) surrounding the dielectric layers (16) make contact with each other. The vias (44) may be formed by placing pillars (40) on top of a metalization layer (14), forming a dielectric layer (16) on top of the metalization layer (14) and surrounding the pillars (40), and removing the pillars (40). Dielectric layers (16) may be followed by other dielectric layers (16) and metalization layers (14) may be followed by other metalization layers (14).
Abstract:
The invention relates to a method for producing electric conductive structures for use in high-frequency technology on a conductive structure carrier at intervals of significantly less than 180 νm, e.g. 30 νm, using microstrip conductors. Said method combines a laser structuring method and an etching method in conjunction with a resist. The resist exhibits characteristics, at least with regard to the laser exposure during the laser structuring method, the etching exposure during the etching method and to its application on the conductive structure carrier in as thin a layer as possible, which at least correspond to those of chemical tin or an amorphic resist
Abstract:
The specification describes of multilevel printed circuit boards and a process for their manufacture in which capacitors and other passive components are buried between levels of the multilevel board. The capacitor in the multilevel structure is designed so that access is conveniently provided to connect from the parallel plate electrodes of the interlevel capacitor to the board surface or to another board level using plated through hole interconnects.
Abstract:
Selon un mode de réalisation de l'invention, les composants électroniques discrets ou intégrés, sont encapsulés chacun dans un boîtier, par exemple plastique; les boîtiers sont ensuite montés sur une carte de circuit imprimé, par exemple époxy. L'ensemble composants et carte est recouvert d'une première couche relativement épaisse, constituée par un composé organique et assurant une fonction de nivellement, puis d'une couche telle qu'un composé métallique minéral, ayant pour fonction d'assurer l'herméticité de l'ensemble.