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Method for increasing bonding force between conductor and non-conductive polymer dielectric layer in substrate of printed circuit board

A technology of printed circuits and conductors, applied in the secondary treatment of printed circuits, improvement of metal adhesion of insulating substrates, coatings, etc.

Inactive Publication Date: 2010-12-15
DONGGUAN RENJI ELECTRONICS MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the micro-roughness of the browned surface is poor, and the test bonding force after pressing is poor, which leads to cracking
[0008] Cu 2 O is easy to form long needle-like or feather-like crystals, which are easy to break at high temperatures and greatly affect the adhesion between copper and resin, and cause black spots to disperse in the pulley with glue flow to form electrical problems, and are also prone to moisture And after the formation of high heat, local delamination explosion

Method used

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  • Method for increasing bonding force between conductor and non-conductive polymer dielectric layer in substrate of printed circuit board
  • Method for increasing bonding force between conductor and non-conductive polymer dielectric layer in substrate of printed circuit board
  • Method for increasing bonding force between conductor and non-conductive polymer dielectric layer in substrate of printed circuit board

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Embodiment Construction

[0066] With the development of electronic products in the direction of thinner and lighter, coupled with dense electronic circuits, the roughness of the inner metal plate, that is, the conductor, is reduced, which in turn leads to the reliability of the bonding force. On the other hand, halogen-free flame retardants gradually replace halogen flame retardants and become the main substrate of printed circuits. At present, non-conductive polymer dielectric layer materials commonly used in the electronics industry have FR-4, insulation, halogen-free, High Tg Features, mainly made of glass fiber and epoxy resin or phenol resin, such as polytetrafluoroethylene (PTFE), epoxy resin (EPOXY RESIN), polyimide (POLYIMIDE), Polycyanate resin (POLYCYANATE ESTER), butylene terephthalate resin (BUTADIENE TEREPHTHALATE RESIN) or a mixture of the above materials, etc. In order to improve the metal plate, that is, the conductor, the surface roughness and the bonding force, the present invention ...

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Abstract

The invention provides a method for increasing the bonding force between a conductor and a non-conductive polymer dielectric layer in a substrate of a printed circuit board. The method comprises the following steps of: roughening the surface of the conductor, and after roughening treatment, soaking the conductor in silane solution of which the volume concentration is 0.01 to 100 percent for seconds to minutes, or directly spraying the silane solution of which the volume concentration is 0.01 to 100 percent onto the surface of the conductor so as to form a silane layer on the surface of the conductor. On the basis of the traditional method, in the method, a process of forming the silane layer is added, so that the bonding force between the conductor and the non-conductive polymer dielectric layer is increased and the problem of plate crack caused by insufficient bonding force between the conductor and the non-conductive polymer dielectric layer is solved.

Description

technical field [0001] The invention relates to a printed circuit board substrate, in particular to a method for increasing the binding force between a conductor and a non-conductive polymer dielectric layer in the printed circuit board substrate. Background technique [0002] As the carrier of various components and the hub of circuit signal transmission, printed circuit board (PCB) has become the most important part of electronic information products. With the miniaturization of electronic information products and the environmental protection requirements of lead-free and halogen-free, PCB is also developing in the direction of high density, high glass transition point (Tg) and environmental protection. Especially in recent years, with the enhancement of people's awareness of environmental protection, halogen flame retardants are used as the main substrate of printed circuit boards, and the combustion products of their waste release dioxins (Dioxin), dibenzofuran (Dibenxof...

Claims

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Application Information

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IPC IPC(8): H05K3/38C08J7/04C08J7/06
Inventor 王维仁
Owner DONGGUAN RENJI ELECTRONICS MATERIAL
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