摘要:
An object of the present invention is to provide a resin composition that can attain cured products having high flame retardancy, high heat resistance, a small coefficient of thermal expansion, and high drilling processability, a prepreg having the resin composition, laminate and a metal foil clad laminate having the prepreg, and a printed circuit board having the resin composition. A resin composition, having at least an epoxy silicone resin (A) prepared by reacting a linear polysiloxane (a) having a carboxyl group with a cyclic epoxy compound (b) having an epoxy group such that the epoxy group of the cyclic epoxy compound (b) is 2 to 10 equivalents based on the carboxyl group of the linear polysiloxane (a), a cyanic acid ester compound (B) and/or a phenol resin (C), and an inorganic filler (D).
摘要:
According to an aspect of the invention, a wiring board includes an inorganic insulating layer and a conductive layer disposed on part of one main surface of the inorganic insulating layer. The part of the one main surface of the inorganic insulating layer includes a plurality of first recessed portions each of which has at least partially circular shape in a plan view. Part of the conductive layer enters into the plurality of first recessed portions. According to the aspect of the invention, it is possible to obtain a wiring board capable of reducing disconnection of the conductive layer and therefore having superior electrical reliability.
摘要:
In the case of a multilayered printed circuit board (20), more particularly a flame-resistant and/or smoke-suppressing multilayered printed circuit board, consisting of a plurality of interconnected layers (2, 3, 12, 13) composed of incombustible, conductive material and layers (1, 11) composed of non-conductive material, two layers (2, 3, 12) composed of a conductive material in each case being separated by at least one layer (1, 11) composed of a non-conductive material, it is provided that the printed circuit board (20) contains in its interior at least two layers (2, 3, 12) having a surface proportion of at least 50%, more particularly at last 70%, composed of the incombustible, conductive material, as a result of which a multilayered printed circuit board (20) having improved flame resistance and reduced smoke evolution can be made available.
摘要:
A wiring board includes a first insulating layer containing a thermosetting resin, a first wiring layer stacked on an upper surface of the first insulating layer, a second insulating layer stacked on the upper surface of the first insulating layer, a second wiring layer stacked on an upper surface of the second insulating layer, and a third insulating layer stacked on the upper surface of the second insulating layer. The second and third insulating layers contain a first photosensitive resin. An outer side surface of the second insulating layer is flush with an outer side surface of the first insulating layer. An outer side surface of the third insulating layer is located inside the outer side surface of the second insulating layer in a plan view. The upper surface of the second insulating layer connecting to the outer side surface thereof is exposed from the third insulating layer.
摘要:
A printed circuit board assembly comprises a printed circuit board having at least one conductive layer supported by a substrate layer, and at least one power semiconductor device, wherein the at least one power semiconductor device is at least partly embedded in the substrate layer.
摘要:
A system to configure a conductive pathway and a method of forming a system of configurable conductivity pathways are described. The system includes a photosensitive layer that becomes conductive based on photoexcitation, and a light source layer deposited over the photosensitive layer, the light source layer selectively providing the photoexcitation to the photosensitive layer. The system further includes a controller to control the light source layer, the controller illuminating a portion of the light source layer corresponding with a user input image to photoexcite the photosentive layer and configure the conductive pathway in the photosensitive layer according to the image
摘要:
Provided is an insulating resin material capable of reducing surface roughness of the surface of a cured object, and, when a metal layer is formed on the surface of the cured object, increasing adhesive strength between the cured object and the metal layer.The insulating resin material of the present invention includes a thermosetting resin, a curing agent, a first inorganic filler surface-treated with a first silane coupling agent, and a second inorganic filler surface-treated with a second silane coupling agent. When absolute difference between SP values of a most-abundantly contained thermosetting resin and an organic group of the first silane coupling agent is defined as SP(A), and when absolute difference between SP values of the most-abundantly contained thermosetting resin and an organic group of the second silane coupling agent is defined as SP(B); (SP(A)−SP(B)) is not smaller than 0.5 but not larger than 3.5.
摘要:
The present invention is directed to a highly conductive, low sintering temperature platinum powder produced using an aerosol decomposition process with platinum (II) tetraamine diacetate as the precursor
摘要:
Certain example embodiments of this invention relate to silver pastes that are capable of making an electrical connection with at least one conductive layer in a layer stack, even where the at least one conductive layer is protected by one or more strong dielectric layers, and/or methods of making the same. Certain example embodiments include a chemically modified silver paste that may be cured or fired using a standard glass tempering furnace (e.g., an electrical or gas-fuelled furnace) or a short-wave infrared heating process at temperatures below 750 degrees C. In certain example embodiments, the fluorine causes apertures or micro-factures in the dielectric layer(s), which allows the silver in the paste to move therethrough (e.g., by capillary action) to form a contact with the conductive layer(s).
摘要:
Discoloration is suppressed in a wiring substrate including a conductive member including silver. A wiring substrate includes a ceramic layer and a conductive member including a conductive layer disposed on an upper surface of the ceramic layer. The conductive member includes silver and at least a portion of an upper surface of the conductive layer is covered with a covering layer. The covering layer includes an inorganic reflecting layer and a glass layer stacked on the inorganic reflecting layer.