摘要:
A circuit board having high adhessiveness contact between electrically insulating layers and having a low interlayer electric resistance is provided. A circuit board is provided with a first conductive layer formed on a core (1) and a first electrically insulating layer formed thereon. In the circuit board, a first conductor layer has a surface roughness Ra of 0.1 nm or more but less than 100 nm, and a first primer layer having a thiol compound as a main material is provided between the first conductive layer and the first electrically insulating layer. Thus, the circuit board which has excellent adhesiveness between the first conductor layer and the first electrically insulating layer and is also applicable to high frequency signal is provided.
摘要:
A circuit board (100) having an insulator layer and a conductor (104) buried in the insulator layer, wherein the insulator layer has a first insulator (101) satisfying a relation μr≧εr, assuming εr is the dielectric constant and μr is the relative permeability, and the conductor is substantially surrounded by the first insulator.
摘要:
An object of the present invention is to reduce an adverse effect of an atmosphere in a heat treatment device used in production of an electronic device, imparted on characteristics of the produced electronic device. To attain the object, an inner surface of the heat treatment device is covered with an oxide passive-state film and bringing the surface roughness of the inner surface to 1 μm or less in terms of a central mean roughness Ra. According to this type of heat treatment device, in curing a heat curable resin, deterioration in the heat curable resin caused by decomposition or dissociation of the heat curable resin, can be reduced.
摘要:
A photosensitive transparent resin film, provided selectively with a groove reaching a transparent substrate is formed on the transparent substrate, and a wiring portion is provided in the groove substantially in flush with the photosensitive transparent resin film. The wiring portion can be formed quickly while controlling the thickness easily by preprocessing the surface of the photosensitive transparent resin film or the bottom face of the groove before the wiring portion is set in the groove.
摘要:
There is provided an active matrix display device including a flattening layer formed so as to surround a source electrode wiring, a drain electrode wiring, and a signal line, so that the source electrode wiring, the drain electrode wiring, and the signal line form substantially the same surface with the flattening layer.
摘要:
A circuit board manufacturing method includes formation of a thermosetting photosensitive resin film on an insulating board by a spin coat method and the like, exposure of the photosensitive resin film to radiation rays such as ultraviolet rays, development with a developer or by etching, heat-hardening of the photosensitive resin film, oxygen plasma treatment or ultraviolet treatment if required, adjustment of a water quantity in the photosensitive resin film by drying the resin film, exposure in a fluorine gas atmosphere, anneal treatment, and then immersion of the resin film in a fluorinated acid chemical.
摘要:
An apparatus for producing a gas using a raw material gas having high reactivity, in particular, a fluorinated hydrocarbon, or a vessel for supplying the gas, characterized in that the surface of a portion thereof contacting with the gas has an average roughness of 1 μm or less in terms of a center line average roughness Ra. It is preferred that an oxide-based passivated film such as a film based on chromium oxide, aluminum oxide, yttrium oxide, magnesium oxide or the like is formed on the surface having a roughness controlled as above. The above apparatus and vessel can be suitably used for preventing the contamination of a raw material gas originated from a gas production apparatus or a vessel for supplying the gas.
摘要:
An apparatus for producing a gas using a raw material gas having high reactivity, in particular, a fluorinated hydrocarbon, or a vessel for supplying the gas, characterized in that the surface of a portion thereof contacting with the gas has an average roughness of 1 μm or less in terms of a center line average roughness Ra. It is preferred that an oxide-based passivated film such as a film based on chromium oxide, aluminum oxide, yttrium oxide, magnesium oxide or the like is formed on the surface having a roughness controlled as above. The above apparatus and vessel can be suitably used for preventing the contamination of a raw material gas originated from a gas production apparatus or a vessel for supplying the gas.
摘要:
The object of the present invention is to form a chromium-oxide film excellent in corrosion resistance without containing an oxide film of other metal onto the optional metallic material. The chromium-oxide passivation film excellent in corrosion resistance without containing the oxide film of other metal can be formed inexpensively and in a short time, and a fluid supplying system for supplying fluid hard in corrosivity in safety is able to be provided. This invention comprises a step of forming the passivation film consisting of a chromium oxide by giving heat treatment in an oxidizing atmosphere after coating chromium on metallic material of which surface roughness (Ra) of a coat surface is not more than 1.5 μm
摘要:
The present invention provides a vacuum thermal insulating valve that may be used at high temperature in gas supply systems or gas exhaust systems, and also may be made substantially small and compact in size owing to its excellent thermal insulating performance. With a vacuum thermal insulating valve comprising a valve equipped with a valve body and an actuator, and a vacuum thermal insulating box that houses the valve, the afore-mentioned vacuum thermal insulating box S is formed by a square-shaped lower vacuum jacket S5 having a cylinder-shaped vacuum thermal insulating pipe receiving part J on a side and with its upper face made open, and the square-shaped upper vacuum jackets S4, which is hermetically fitted to the lower vacuum jacket S5 and with its lower face made open.