Abstract:
PROBLEM TO BE SOLVED: To produce a multilayer printed wiring board that exhibits such a high heat resistance that neither detachment nor cracking would occur in a thermal shock test of cooling/heating cycle, etc., also exhibiting a low thermal expansibility and a flame retardance. SOLUTION: The resin composition for use to form a resin layer of metal foil with resin or an insulating sheet layer of insulating sheet with base material is characterized by containing a cyanate resin and/or prepolymer thereof, an epoxy resin substantially not containing any halogen atoms, a phenoxy resin substantially not containing any halogen atoms, an imidazole compound and an inorganic filler. The metal foil with resin comprising the resin composition. the insulating sheet with base material comprising the resin composition and a multilayer printed wiring board obtained by superimposing the metal foil with resin or insulating sheet with base material on one or both major surfaces of inner layer circuit board and performing thermal compression molding thereof are further provided. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a multilayer wiring board capable of readily forming a thin-film pattern which is superior in uniformity as a mask for forming a wiring layer, even if there are multilayer wiring board warpages or irregularities. SOLUTION: A primer-coated metal foil 20 constituted of a primer resin layer 21 and a metal layer 22 is placed on a surface of a double-face CCL 10, with metal layers 12 and 13 prepared on a support base 11, and the primer-coated metal foil and the double-face CCL are bonded and then the primer resin layer 21 is cured. A via Vb is, thereafter formed from the metal layer 22 side, and a metal-plate layer 30 is formed thereon. After that, the etched down metal-plated layer 30 and the metal layer 22 are patterned; and by using the patterned layers as a mask, the primer resin layer 21 is patterned. By using the patterned primer resin layer 21 as a mask, the metal layer 12 of the double-face CCL 10 and the metal-plated layer 30 are patterned, and a wiring pattern is formed. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a copper-clad laminate which shows less degrading of adhesion between a resin layer containing a liquid crystal polymer and a copper foil even when stored under high temperature and humidity atmosphere. SOLUTION: In the method for producing the copper-clad laminate wherein a resin layer containing a liquid crystal polymer adheres to a surface of the copper foil, the copper-clad laminate which can sufficiently maintain excellent adhesion even when stored under high temperature and humidity atmosphere is obtained by using a copper foil of which the surface has 0.4 or more of a ratio of nickel concentration to copper concentration (C Ni /C CU ) and has substantially no silicon detected when measured with X-ray photoelectron spectroscopy. The liquid crystal polymer is preferably a liquid crystal polyester having a specific structural unit. The copper-clad laminate can appropriately be used for a flexible printed wiring board or the like. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation:要解决的问题:提供即使在高温高湿气氛下储存的情况下,也可以提供含有液晶聚合物的树脂层和铜箔之间的粘合性降低的覆铜层压板。 解决方案:在其中含有液晶聚合物的树脂层粘附在铜箔表面上的覆铜层压板的制造方法中,即使在高温下储存时也能够充分保持优异的附着力的覆铜层压板 通过使用表面具有0.4以上的镍浓度与铜浓度(C Ni SB> / C CU SB>)的比例的铜箔得到湿气氛,并具有 当用X射线光电子能谱测量时,基本上没有检测到硅。 液晶聚合物优选为具有特定结构单元的液晶聚酯。 覆铜层压板可以适用于柔性印刷线路板等。 版权所有(C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed circuit board allowing a minute second circuit pattern further easily formed by carrying out a manufacturing process of a printed circuit board using a resin layer capable of forming roughness by a desmear process; and a manufacturing method thereof. SOLUTION: This manufacturing method of this printed circuit board is characterized by including steps of: providing a substrate on which a first insulation layer, a first circuit pattern, a second insulation layer and a resin layer are successively laminated; forming a through-hole penetrating the board; forming roughness on the resin layer by a desmear process; forming a via executing electrical connection between layers through the through-hole; and forming a second circuit pattern on the resin layer having roughness formed thereon. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of producing a flexible single-sided polyimide copper-clad laminate having excellent flex properties. SOLUTION: The method comprises (A) forming a polyamic acid coating by applying a polyamic acid to the surface of a copper foil starting material, (B) forming a laminate by bonding a polyimide film to the polyamic acid coating, and (C) heat treating the laminate, wherein the copper foil starting material is a material for which, if the copper foil starting material is subjected to a heat treatment for 30 minutes at 200°C in a non-oxidizing atmosphere and the intensity of the (200) plane determined by X-ray diffraction following this heat treatment is termed I, and if the intensity of the (200) plane determined by X-ray diffraction of a copper powder that has not been subjected to heat treatment is termed I 0 , I and I 0 satisfy a relationship represented by a formula (I) of I/I 0 >20. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a copper foil with a resin layer ensuring good adhesiveness between the copper foil and a base material resin layer in the resin substrate for a flexible printed wiring board which uses the copper foil having no roughening treatment. SOLUTION: This copper foil with the resin layer is characterized by directly bonding the copper foil having no roughening treatment to the layer of a resin containing an aromatic polyamide resin including phenolic hydroxy groups represented by formula (1) (wherein m and n are each an average value and 0.005≤n/(m+n) 1 is a bivalent aromatic group; Ar 2 is a bivalent aromatic group having a phenolic hydroxy group; and Ar 3 is a bivalent aromatic group). COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation:要解决的问题:为了提供一种具有树脂层的铜箔,确保了在使用没有粗糙化处理的铜箔的柔性印刷线路板的树脂基板中铜箔和基材树脂层之间的粘合性良好。 解决方案:具有树脂层的铜箔的特征在于将没有粗糙化处理的铜箔直接粘合到包含由式(1)表示的酚羟基的芳族聚酰胺树脂的树脂层(其中m和n 各自为0.005≤n/(m + n)<0.05,(m + n)为2〜200; Ar 1 SB>为二价芳基; Ar 2 < / SB>是具有酚羟基的二价芳香族基团,Ar 3 SB>为二价芳香族基团)。 版权所有(C)2009,JPO&INPIT