摘要:
Embodiments of the present invention relates generally to the manufacture of printed circuit boards (PCB's) or printed wiring boards (PWB's), and particularly to methods for treating smooth copper surfaces to increase the adhesion between a copper surface and an organic substrate. More particularly, embodiments of the present invention related to methods of achieving improved bonding strength of PCBs without roughening the topography of the copper surface. The bonding interface between the treated copper and the resin layer of the PCB exhibits excellent resistance to heat, moisture, and chemicals involved in post-lamination process steps.
摘要:
In a conductive film formed by photo sintering of a film composed of copper particulates, adhesiveness to a base material of the conductive film is improved. A circuit board 1 includes a circuit including a conductive film 2, and a substrate 3. The circuit board 1 further includes a resin layer 4 between the substrate 3 and the conductive film 2. The substrate 3 is made of a non-thermoplastic base material 31. The resin layer 4 contains a thermoplastic resin. The conductive film 2 is formed by photo sintering of a film composed of copper particulates 21, and thus improving adhesiveness of the conductive film 2 to the base material 31 through the resin layer 4.
摘要:
[Object] To provide a highly reliable circuit board which can be used for a long period of time and an electronic apparatus including this circuit board and an electronic component mounted thereon. [Solution] The circuit board includes a ceramic sintered body (11) and a metal wiring layer (13) provided on at least one primary surface (11a) thereof with a glass layer (12) interposed therebetween, and when the cross section of the circuit board perpendicular to the primary surface (11a) of the ceramic sintered body (11) is viewed, the ratio of the length of an interface (15) between the glass layer (12) and the metal wiring layer (13) to a length (12a) of the glass layer (12) in a direction along the primary surface (11a) is 1.25 to 1.80. As a result, good heat dissipation characteristics can be obtained, and the metal wiring layer (13) is not likely to be peeled away from the ceramic sintered body (11) due to operation of an electronic component (21) and/or cooling/heating cycles performed by repeated on-off operations thereof, so that a highly reliable circuit board which can be used for a long period of time can be provided.
摘要:
An object to be achieved by the present invention is to provide a conductive pattern having such a level of adhesion that a conductive layer containing a conductive substance such as silver does not separate from a primer layer with time. The present invention relates to a conductive pattern including a conductive layer (A) containing a compound (a1) having a basic nitrogen atom-containing group and a conductive substance (a2); a primer layer (B) containing a compound (b1) having a functional group [X]; and a substrate layer (C), the conductive layer (A), the primer layer (B), and the substrate layer (C) being stacked, in which a bond is formed by reacting the basic nitrogen atom-containing group of the compound (a1) contained in the conductive layer (A) with the functional group [X] of the compound (b1) contained in the primer layer (B).
摘要:
Die Erfindung betrifft eine neuartige Ankergruppe für organische dielektrische Verbindungen, wie sie insbesondere bei der Herstellung organisch basierter Kondensatoren eingesetzt werden. Hier werden erstmals Kondensatoren beschrieben, die sich in einem Parallelprozess auf einem Prepreg oder anderen gängigen Leiterplattensubstraten ohne Zusatzmetallisierung auf Kupfer herstellen lassen. Im Anschluss daran kann die vorgefertigte Kondensatorlage in die Leiterplatte integriert werden, wodurch sich für die Oberfläche der Leiterplatte ein Platz-/Kostengewinn ergibt.
摘要:
The method involves superimposing two layers, and metallizing two faces of each layer. An interlayer made of metallized thermoplastic material e.g. liquid crystal polymer, is arranged between the two layers. Holes are pierced within the two layers before the two layers are placed in contact with each other, and within the interlayer. The holes are metallized. A metal is applied on openings of the holes of the two layers, and another metal is applied on openings of the holes of the interlayer. The two layers and the interlayer are pressed for diffusion bonding of zones covered with the metals. An independent claim is also included for a printed circuit board comprising two superimposed metallized layers.