摘要:
An electromagnetic shielding copper foil superior in electromagnetic shielding ability, high in transmittance, and free from particle shedding comprising a copper foil on at least one surface of which a fine roughening particle layer of copper or an alloy is provided and having on the fine roughening particle layer a smoothening layer comprised of cobalt, nickel, indium, or an alloy of the same and an electromagnetic shield able to be suitably used for a PDP using the same. The fine roughening particle layer may also be a layer comprised of a fine particle roughening particle layer of copper on which a fine roughening particle layer of a copper alloy is stacked or may also be formed by a copper-cobalt-nickel alloy. The smoothening layer of the copper foil may be treated for stainproof or by a silane coupling agent to protect the surface of the copper foil.
摘要:
To produce an ultra-thin copper foil with a carrier foil that microscopic crystal grains can be deposited without being affected by the surface roughness of a carrier foil, etching can be performed until an ultrafine width such that line/space is 15 µm or less, and the microscopic line and a wiring board have large peel strength even after line of 15 µm is etched. An ultra-thin copper foil wherein a carrier foil, a peeling layer, an ultra-thin copper foil are laminated in this order, the ultra-thin copper foil (before roughening treatment is performed) is an electrolytic copper foil that surface roughness of 2.5 µm as ten point height of roughness profile, and the minimum distance between peaks of salients of a based material is 5 µm or more. Moreover, the surface of the ultra-thin copper foil is performed roughening treatment.
摘要:
A plating bath, able to form a resistance layer with a uniform thickness distribution on the roughened surface of a conductive base, including nickel ions and sulfamic acid or its salt as essential components and at least one of phosphoric acid, phosphorous acid, hypophosphorous acid, and salts of the same; a conductive base having a thin resistance layer with a stable resistance, and a resistance circuit board material using the same.
摘要:
Disclosed is a method of making electrolytic metal foil (7), comprising carrying out electrolysis by filling with an electrolytic solution a space (4) defined between a cathode drum (1) capable of rotating on a horizontal axis and an anode (2) provided in face of the surface of the drum, wherein the electrolytic solution is allowed to flow down from the upper part toward the lower part of the space at the flow velocity such that a gas generated in the solution during the electrolysis may virtually flow out downward in its whole quantity. Disclosed also is an apparatus for making electrolytic metal foil, comprising a cathode drum capable of rotating on a horizontal axis, an anode provided in face of the surface of the drum and provided a solution discharging outlet (3) which allow a gas generated during the electrolysis to flow down the space between the both electrodes at the flow velocity such that the gas generated may downward flow out virtually in its whole quantity together with an electrolytic solution for metal electrodeposition. According to this invention, the resulting electrolytic foil can be of dense texture and of excellent physical properties and surface states.
摘要:
A conductive base material with resistance layer provided with roughened conductive base material on the surface of which the resistance layer is formed with uniform thickness distribution, and a resistance circuit board material using the same, wherein electrodeposited copper foil having granular crystals is roughening treated on at least one surface to obtain Rz of not more than 2.5 µm and the resistance layer of Ni alloy layer containing at least 8 to 18 wt% of P is formed on the roughening treated side.
摘要:
An electrodeposited copper foil having a rough surface having knob-like projections and a surface roughness of 2 to 4 µm at part of a surface thereof produced by electrolysis using an electrolyte containing copper as a main component and a compound having mercapto groups, at least one type of another organic compound, and chloride ions and an electrodeposited copper foil obtained by roughening treating an untreated copper foil having a matte side, for bonding with a resin substrate, having knob-like projections and a surface roughness of 2 to 4 µm by running a predetermined current through it for a predetermined time in an electroforming bath.
摘要:
A copper foil having a high etching factor, enabling formation of fine patterns excellent in linearity of bottom lines of circuit patterns and without leaving particles of copper foil forming the circuit patterns in the resin, free from a drop in bond strength between the copper foil and resin substrate due to the processing for formation of solder balls, excellent in visibility, and excellent in mounting of ICs on fine patterns, comprising a copper foil on at least one surface of which is provided an alloy fine roughening particle layer comprised of a copper-cobalt-nickel alloy with contents of cobalt and nickel equal to or greater than that of copper, specifically a copper foil on the surface of the copper foil for bonding with the resin substrate of which is provided an alloy fine roughening particle layer comprised of 5 to 12 mg/dm 2 copper, 6 to 13 mg/dm 2 cobalt, and 5 to 12 mg/dm 2 nickel, wherein the alloy fine roughening particle layer provided on the copper foil surface may be treated for stainproof or may be treated by a silane coupling agent.
摘要:
A copper foil reducing transmission loss at a high frequency and excellent in bond strength with a resin substrate, including at least a granular layer and a columnar layer in its thickness direction, the columnar layer being formed on at least one surface of the granular layer forming the copper foil or the granular layer being formed on at least one surface of the columnar layer forming the copper foil, the relation of the thickness A of the granular layer and the thickness B of the columnar layer in the copper foil being preferably A/(A+B)=40 to 99%, a method of production and apparatus for production for the same, and a high frequency circuit using the same.
摘要翻译:以高频率的铜箔减少传输损耗和优良的粘结强度的树脂底物,包括至少一个颗粒层,并在其厚度方向上的柱状层,柱状层形成在形成颗粒层中的至少一个表面上 铜箔或颗粒层形成在所述柱状层形成铜箔,颗粒层的厚度A之间的关系,并在铜箔上的柱状层的是优选A /厚度B(中的至少一个表面上 A + B)= 40〜99%,生产和设备的生产对于相同的方法,和使用其的高频电路。
摘要:
A copper foil for chip-on-film use, a plasma display panel, or a high-frequency printed circuit board obtained by rolling copper foil to smooth the surface to give a surface area of not more than 1.30 times an ideal smooth surface, the smoothed copper foil having deposited on it fine roughening particles of Cu or alloy particles of Cu and Mo or alloy particles comprising Cu and at least one element selected among a group of Ni, Co, Fe, and Cr or a mixture of this alloy particles and oxide of at least one element selected among a group of V, Mo, and W.