Unlock instant, AI-driven research and patent intelligence for your innovation.

High efficient copper foil and producing method thereof

A manufacturing method and technology of copper foil, applied in the direction of printed circuit manufacturing, chemical instruments and methods, and improvement of metal adhesion of insulating substrates, can solve the problems of transmission loss deterioration and dependence, and achieve improvement of high-frequency transmission loss, high-viscosity The effect of bonding strength

Inactive Publication Date: 2004-09-22
FURUKAWA ELECTRIC CO LTD
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this copper foil must be subjected to strong roughening treatment in order to obtain bonding strength (the roughness of the bonding surface is small, and the roughening treatment is strong)
As a result, transmission loss becomes further worse
The reason for this is that the transmission loss of the experimental results disclosed in Table 1 and Table 2 is more dependent on the intensity of the roughening treatment than the surface roughness

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High efficient copper foil and producing method thereof
  • High efficient copper foil and producing method thereof
  • High efficient copper foil and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Manufacturing conditions and electrolyte composition of electrolytic copper foil

[0040] As the production conditions of the electrolytic copper foil implemented in the present invention, the electrolyte composition and electrolytic conditions used for the production of the electrolytic copper foil are shown in Tables 3A to C (hereinafter referred to as Examples A to C), and also in Table 3 as a comparative example. D of Table 3 shows the composition of the electrolytic solution and the electrolysis conditions used for producing the untreated copper foil.

[0041] condition

copper

sulfuric acid

MPS

HEC

glue

Cl

current density

liquid temperature

A

90g / l

80g / l

0.8ppm

5ppm

40ppm

60A / dm 2

60℃

B

90g / l

80g / l

1ppm

5.5ppm

40ppm

60A / dm 2

60℃

C

90g / l

80g / l

1ppm

4ppm

2ppm

40ppm

60A / dm 2

60℃

...

Embodiment 2

[0067] (1) Foil-making conditions of untreated copper foil, surface plating type and adhesion amount (mg / dm 2 )

[0068] Untreated copper foil with a thickness of 35 μm was produced using the untreated copper foil foil-making conditions and solution composition of Example C and Comparative Example D of Example 1, and the surface treatment shown in Table 9 was performed.

[0069] (2) Performance

[0070] Table 10 shows the bonding strength between the treated Rz and the polyimide substrate of the surface-treated copper foil in Table 9.

[0071] Condition No.

[0072] C

[0073] As shown in Table 10, applying nickel plating, zinc plating, cobalt plating, alloy plating of these metals, chromate treatment and coupling agent treatment on untreated copper foil can improve heat resistance, HCl resistance, and rust resistance. force.

[0074] On the other hand, the results of measuring the transmission loss (dB / m) of the copper foil surface-treated under t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Surface roughnessaaaaaaaaaa
Login to View More

Abstract

An electrodeposited copper foil having a rough surface having knob-like projections and a surface roughness of 2 to 4 m 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 m by running a predetermined current through it for a predetermined time in an electroforming bath.

Description

technical field [0001] The present invention relates to an electrodeposited copper foil having a small surface roughness on an adherend surface, which is particularly suitable as a conductive material for a high-frequency printed circuit, and a method for producing the same. [0002] Although the main use of the present invention is a conductive material for printed circuits for high frequencies, the electrolytic copper foil according to the present invention is not limited to this use. Background technique [0003] Electrodeposited copper foil used as a conductive material for printed circuits must satisfy the adhesive strength, electrical characteristics, etchability, heat resistance, etc. . In order to satisfy such characteristics, various treatment methods for roughening the bonded surface of copper foil and improving its chemical properties have been proposed and implemented. [0004] As an example, a method has been proposed in which copper foil is used as a cathode ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B32B15/08C23C30/00C25C1/12C25D1/04C25D3/38C25D5/12C25D5/34C25D5/48C25D7/06C25D11/38H05K3/38
CPCC25D5/12H05K3/384C25D5/48C25D5/34C25D3/38C25D1/04H05K2203/0723H05K2201/0355H05K2203/0307C25D11/38Y10T428/12993C25D5/627C25D5/605C25D7/0614
Inventor 篠崎健作
Owner FURUKAWA ELECTRIC CO LTD