摘要:
A circuit board is manufactured by filling a via-hole formed in an insulating substrate with conductive material, disposing conductive layers on both sides of the insulating substrate, and forming alloy of component material of the conductive material with component material of the conductive layers. In the circuit board, therefore, the conductive material filled in the via-hole formed in the insulating substrate is securely connected electrically as well as mechanically to the conductive layers on both sides of the insulating substrate with high reliability.
摘要:
A circuit board is manufactured by filling a via-hole formed in an insulating substrate with conductive material, disposing conductive layers on both sides of the insulating substrate, and forming alloy of component material of the conductive material with component material of the conductive layers. In the circuit board, therefore, the conductive material filled in the via-hole formed in the insulating substrate is securely connected electrically as well as mechanically to the conductive layers on both sides of the insulating substrate with high reliability.
摘要:
A resin having a monomer unit structure represented by the formula: ##STR1## can be cured by an actinic irradiation such as electron beam, ultraviolet ray or infrared ray to give a heat-resistant, moisture-resistant, acid- and alkali-resistant and solvent-resistant film which is especially suitable for a paint vehicle resin for use in resistor element or magnetic recording medium. A composition comprising said resin modified by incorporating at least of one monomer or oligomer containing at least one acryl, methacryl or allyl group therein for facilitating the control of the characteristics of a resistor element obtained by using said composition is also disclosed.
摘要:
The thermal expansion coefficient of a composite insulator layer is adjusted in order to suppress warping deformation in a multilayer printed wiring board caused by temperature change. The thicknesses and the covering ratios on the both sides of the electric conductor layer composing the multilayer printed wiring board are asymmetric with respect to the central plane. A multilayer printed wiring board is formed by laminating composite insulation layers and laminated bodies, the composite insulation layer being made of a cloth a resin impregnated into the cloth, the laminated body being composed of electric conductor layers formed by coating on a surface of the composite insulation layer. The thermal expansion coefficient of the composite insulation layer having a conductor layer with a higher covering ratio is set to be smaller than the thermal expansion coefficient of the composite insulation layer having a conductor layer with a lower covering ratio.
摘要:
A resin having a monomer unit structure represented by the formula: ##STR1## can be cured by an actinic irradiation such as electron beam, ultraviolet ray or infrared ray to give a heat-resistant, moisture-resistant, acid- and alkali-resistant and solvent-resistant film which is especially suitable for a paint vehicle resin for use in resistor element or magnetic recording medium. A composition comprising said resin modified by incorporating at least of one monomer or oligomer containing at least one acryl, methacryl or allyl group therein for facilitating the control of the characteristics of a resistor element obtained by using said composition is also disclosed.