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A flex fatigue resistant ribbon transmission line and its manufacturing process

A strip transmission line, flex fatigue technology, applied in the direction of printed circuit components, printed circuits, electrical components, etc., to achieve high flex fatigue resistance 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

[0002] The existing flexible printed circuit board strip transmission line is dynamically bent hundreds of thousands of times with communication equipment, and its fatigue resistance is extremely challenging

Method used

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  • A flex fatigue resistant ribbon transmission line and its manufacturing process
  • A flex fatigue resistant ribbon transmission line and its manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to figure 1 and figure 2 , a strip transmission line resistant to flex fatigue, comprising an upper protective film 1, an upper ground layer 2, an upper composite metal layer 3, an upper insulating dielectric layer 4, a middle composite metal layer 5, a lower insulating dielectric layer 6, and a lower composite metal layer 7. Lower ground layer 8 and lower protective film 9, upper protective film 1, upper ground layer 2, upper composite metal layer 3, upper insulating dielectric layer 4, middle composite metal layer 5, lower insulating dielectric layer 6, lower composite metal layer 7. The lower ground layer 8 and the lower protective film 9 are sequentially laminated to form a strip transmission line. A metal line is formed on the middle composite metal layer 5 , and the metal line includes a high-frequency signal line 14 , a ground layer 15 , a high-speed signal line 16 and a ground line 17 . The upper insulating dielectric layer 4 and the lower insulating di...

Embodiment 2

[0035] refer to figure 1 and figure 2 , a flex fatigue resistant ribbon transmission line manufacturing process, comprising the following steps:

[0036] S1. Provide a middle composite metal layer 5 with a ground layer 15, a high-frequency signal line 14, a high-speed signal line 16 and a ground line 17;

[0037] S2. First use glue or low-melting point PEEK film to connect one side of the lower insulating medium layer 6 and one side of the middle composite metal layer 5 into one body by thermal compression, and one side of the upper insulating medium layer 4 and the other side of the middle composite metal layer 5 are heated. crimped and connected into one body, and the middle composite metal layer 5 is covered therein;

[0038] S3. Selecting the set positions of the upper insulating dielectric layer 4 and the lower insulating dielectric layer 6 by laser ablation to form a via hole 10, and cleaning the via hole 10 with plasma;

[0039] S4. The other side of the upper insulat...

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Abstract

The invention discloses a flex fatigue-resistant strip transmission line, which comprises an upper protective film, an upper grounding layer, an upper composite metal layer, an upper insulating medium layer, a middle composite metal layer, a lower insulating medium layer, and a lower composite metal layer laminated in sequence. layer, the lower ground layer and the lower protective film, the metal circuit is formed on the middle composite metal layer, the metal circuit includes the ground layer, the upper composite metal layer and the lower composite metal layer pass through the via holes on the upper insulating dielectric layer and the lower insulating dielectric layer respectively It is electrically connected to the ground layer, the upper ground layer is electrically connected to the upper composite metal layer, and the lower ground layer is electrically connected to the lower composite metal layer. Correspondingly, the invention also discloses a flex fatigue-resistant strip transmission line manufacturing process. Under the condition of the same thickness of the existing flexible printed circuit board strip transmission line, the strip transmission line has higher flex fatigue resistance, and is suitable for responding to dynamic bending of equipment by flexural deformation.

Description

technical field [0001] The invention relates to a mobile phone with a bendable screen, in particular to a flex fatigue-resistant ribbon transmission line and its manufacturing process. Background technique [0002] The existing flexible printed circuit board ribbon transmission line undergoes hundreds of thousands of dynamic bendings with communication equipment, and its fatigue resistance is extremely challenging. For the strip transmission line corresponding to the new bendable screen mobile phone in the market, it is necessary to propose a new printed circuit board type strip line stack structure and its manufacturing process to meet the demand for hundreds of thousands of bending times of the bendable screen. Contents of the invention [0003] Aiming at the deflection fatigue problem of the ribbon transmission line corresponding to the bendable screen mobile phone, the present invention proposes a flex fatigue-resistant ribbon transmission line and its manufacturing pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02
CPCH05K1/0242
Inventor 满方明
Owner SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD