摘要:
An object of the present invention is to provide a treated copper foil laminated with a mesomorphic polymer film having low hygroscopicity and superior high thermal resistance to make a circuit board composite materials having large peel strength and compatibility with fine pattern processes, which a copper foil being deposited with roughening particles to make the treated copper foil having a roughening treated side with surface roughness of 1.5 to 4.0 µm and luminosity of not more than 30, having projections formed from the roughening particles with a height of 1 to 5 µm, preferably 6 to 35 thereof are uniformly distributed in a 25 µm of surface length of copper foil cross-section observed, and its maximum width being at least 0.01 µm and not more than twice of 25 µm divided by the number of projections in the 25 µm surface length.
摘要:
An object of the present invention is to produce an ultra-thin copper foil with a carrier which has few pinholes and small surface roughness and which has an the thickness of less than 5 µm, and to produce the method of producing the foil, and further to produce a printed circuit board for fine pattern, a multilayer printed circuit board and a chip on film circuit board by using the ultra-thin copper foil with a carrier. The present invention provides an ultra-thin copper foil with a carrier produced by stacking a peeling layer and an ultra thin copper foil in order on the surface of a carrier copper foil which is made smooth so that the mean surface roughness of at least one side is Rz of 0.01 to 2.0 µm by the chemical polishing, the electrochemical dissolution, or the smoothing plating processing method independently, combining two or more, or further combining the mechanical polishing.
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:
An inexpensive conductive base material with a thin film resistance layer having small variation of the sheet resistance value and a conductive base material with a resistance layer enabling production of a printed resistor circuit board by stably leaving behind resistance elements, that is, a conductive base material with a thin film resistance layer comprised of a conductive base material having a resistance layer formed on its surface wherein the resistance layer includes Ni containing P and an amorphous and a crystalloid form are mixed together and a conductive base material with a thin film resistance layer comprised of a conductive base material having a resistance layer formed on its surface wherein the resistance layer is a crystalline thin film resistance layer including Ni containing P.
摘要翻译:与具有薄层电阻值的偏差小,并在导电性基材带电阻层能够制造印刷电阻电路板的通过稳定地留下电阻元件的薄膜电阻层,廉价的导电性基材所做的是,在导电性基材 用包括具有形成在其表面上worin电阻层的电阻层的导电性基材的薄膜电阻层包括含Ni和非晶态和晶体形式P被混合在一起,并用薄膜电阻层的导电性基材由 具有其表面上形成worin在电阻层上的电阻层的导电性基体材料是一种结晶性薄膜电阻层,其包括含Ni P.
摘要:
Copper foil for fine pattern printed circuits having a sufficient bond strength with a resin substrate, eliminating the problems of residual copper, erosion at the bottom portions of the circuit lines, etc. at the time of formation of fine patterns, and superior in heat resistance and electrical characteristics, comprising untreated copper foil roughening treated on its surface, wherein the untreated copper foil before roughening treatment is an electrodeposited copper foil having a surface roughness in terms of 10-point average roughness Rz not more than 2.5 µm and a minimum distance between peaks of rough pyramid of at least 5 µm or having further crystal grains of an average particle size of not more than 2 µm exposed at the surface thereof, and a method of production of the same.
摘要:
An insoluble electrode device comprising a box (11), having an opening on one face and an outlet (12) for an electrolyte solution on at least one of other faces, mounted to said open face thereof an electrode plate (13) having apertures such as meshes, holes and pores. According to the device of this invention, there can be formed a fresh and uniform liquid flow of an electrolyte solution in the space between the electrodes, whereby a high quality electrolytic surface treatment can be achieved.
摘要:
An ultrathin copper foil with a carrier not causing blistering at a release layer interface, having a low carrier peeling force, friendly to the environment, and enabling easy peeling of a carrier foil and an ultrathin copper foil even under a high temperature environment and a printed circuit board enabling a stable production quality of a base of a printed circuit board for fine pattern applications using the ultrathin copper foil with the carrier, that is, a ultrathin copper foil with a carrier comprising a carrier foil, a diffusion prevention layer, a release layer, and an ultrathin copper foil, wherein the release layer is formed by a metal A for retaining a release property and a metal B for facilitating plating of the ultrathin copper foil, a content a of the metal A and a content b of the metal B forming the release layer satisfying an equation:
and a printed circuit board prepared by using such a ultrathin copper foil with a carrier.
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 (1), a peeling layer (2), an ultra-thin copper foil (4) are laminated in this order, the ultra-thin copper foil (4) (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 (5).
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.