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A strip transmission line with high resistance to flex fatigue and its manufacturing method

A strip transmission line, high flex resistance technology, applied in printed circuit manufacturing, manufacturing printed circuit precursors, removing conductive materials by chemical/electrolytic methods, etc., to achieve small side erosion, excellent bending resistance, nickel-copper Good etching effect

Active Publication Date: 2021-10-22
SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing flex fatigue-resistant flexible printed circuit board strip-shaped transmission line laminated structure uses the flexural motion of the communication equipment to achieve the high bending fatigue resistance requirements of the transmission line. The transmission line can adapt to hundreds of thousands of flexures However, it is still challenging to further improve the flex fatigue resistance and adapt to SMT soldering electronic components

Method used

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  • A strip transmission line with high resistance to flex fatigue and its manufacturing method

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Effect test

Embodiment 1

[0038] Please refer to figure 1 , a strip transmission line with high resistance to flex fatigue, including an upper structure, an intermediate structure, and a lower structure, the upper structure and the lower structure are symmetrically laminated with the intermediate structure, and the overlapping parts of the intermediate structure, the upper structure, and the lower structure are non- Flexure zone A, the non-overlapping part is flexure zone B, the upper layer structure includes the laminated first insulating protection layer 1 and the first nickel-copper composite metal layer 2, and the lower layer structure includes the laminated fourth insulating protection layer 14 and the first Five-nickel-copper composite metal layer 13, the middle layer structure includes the second insulating protection layer 3, the second nickel-copper composite metal layer 5, the first insulating dielectric layer 6, the third nickel-copper composite metal layer 7, the second Insulation dielectri...

Embodiment 2

[0051] Please refer to figure 1 , a high flex fatigue resistance strip transmission line manufacturing method, including:

[0052] S1. First, a layer of nickel layer with a thickness of more than ten nanometers is made on one side of the high-melting point single-layer PEEK film by nickel ion implantation, and a 5-9um thick copper layer is electroplated on the nickel layer to form a third nickel-copper layer. Composite metal layer 7, the third nickel-copper composite metal layer 7 forms a metal circuit through dry film pasting, exposure, development, and etching;

[0053] S2. First use the second bonding layer 8 to hot press the second insulating dielectric layer 9 side to the third nickel-copper composite metal layer 7 side, and hot-press the first insulating dielectric layer 6 side to the third nickel-copper composite metal layer On the other side of the layer 7, the third nickel-copper composite metal layer 7 is coated therein;

[0054] S3. Using a laser to ablate the set...

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Abstract

The invention discloses a strip transmission line with high resistance to flex fatigue, which comprises an upper layer structure, an intermediate layer structure, and a lower layer structure, wherein the upper layer structure and the lower layer structure are symmetrically laminated with the middle layer structure, and the middle layer structure overlaps with the upper layer structure and the lower layer structure Part of it is a non-flexing area, and the non-overlapping part is a flexing area. The upper structure includes a laminated first insulating protective layer and a first nickel-copper composite metal layer, and the lower layer structure includes a laminated fourth insulating protective layer and a fifth nickel layer. The copper composite metal layer, the intermediate layer structure includes the second insulating protective layer, the second nickel-copper composite metal layer, the first insulating dielectric layer, the third nickel-copper composite metal layer, the second insulating dielectric layer, the fourth nickel The copper composite metal layer and the third insulating protection layer, the first nickel-copper composite metal layer laminated with the second insulation protection layer, and the fifth nickel-copper composite metal layer laminated with the third insulation protection layer. The invention has higher bending fatigue resistance and is suitable for SMT welding electronic components.

Description

technical field [0001] The invention relates to a flexible printed circuit board type strip transmission line, in particular to a strip transmission line with high resistance to flex fatigue and its manufacturing method. Background technique [0002] The flexible printed circuit board type strip transmission line can be used to transmit high-frequency and high-speed signals. Its bending resistance and electrical signal transmission ability are related to the cross-sectional structure and size of the transmission line. High bending fatigue resistance is easy to achieve under the laminated structure of the third cross-sectional size , and in order to obtain better electrical signal transmission, a laminated structure with a thick cross-sectional size should be used. [0003] The existing flex fatigue-resistant flexible printed circuit board strip-shaped transmission line laminated structure uses the flexural motion of the communication equipment to achieve the high bending fat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H05K3/02H05K3/06
CPCH05K1/02H05K1/028H05K3/022H05K3/06
Inventor 满方明
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD