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Liquid crystal polymer substrate and processing method thereof

A technology of liquid crystal polymer and processing method, applied in nonlinear optics, instruments, optics, etc., can solve the problems of poor high-frequency characteristics of liquid crystal polymer film, poor heat resistance of liquid crystal polymer film, and low bonding strength, etc. Excellent peel strength, high peel strength, high bond strength effect

Active Publication Date: 2021-03-02
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention mainly solves the problem of low bonding strength between the liquid crystal polymer film and the metal conductive layer in the liquid crystal polymer substrate in the prior art, or the poor heat resistance of the liquid crystal polymer film, or the high frequency of the liquid crystal polymer film. Technical issues with poor features

Method used

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  • Liquid crystal polymer substrate and processing method thereof
  • Liquid crystal polymer substrate and processing method thereof
  • Liquid crystal polymer substrate and processing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0074] Melting point is T m1 The liquid crystal polymer is a liquid crystal copolyester of p-hydroxybenzoic acid, 4,4'-dihydroxybiphenyl and terephthalic acid with a melting point of 320 ° C, and a melting point of T m2 For the liquid crystal polymer, the liquid crystal copolyester of p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid with a melting point of 280°C is selected, and the liquid crystal polymer material is dried and pretreated in a vacuum drying oven at a drying temperature of 150°C. The drying time is 5 hours, and the water content of the resin after drying is less than 300ppm. T according to melting point m2 The mass percentage of the liquid crystal polymer resin accounting for the total resin amount of the liquid crystal polymer film is 1.0%. The two liquid crystal polymers are evenly mixed, and then blended and granulated by a co-rotating twin-screw extruder, and blended to form The granulated liquid crystal polymer material is dried in a vacuum drying ove...

Embodiment 2

[0077] The difference from Example 1 is that the melting point is T m2 The liquid crystal polymer resin accounts for 5.0% by mass of the total resin amount of the liquid crystal polymer film.

Embodiment 3

[0079] The difference from Example 2 is that both sides of the composite liquid crystal polymer film 2 are covered with copper foil, that is, they are stacked in the order of copper foil / composite liquid crystal polymer film 2 / copper foil, and then hot-pressed to obtain Liquid crystal polymer substrate (such as figure 2 shown).

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Abstract

The invention discloses a liquid crystal polymer substrate and a processing method thereof. The liquid crystal polymer substrate comprises a composite liquid crystal polymer film and a metal conductive layer covering at least one surface of the composite liquid crystal polymer film; and the composite liquid crystal polymer film comprises a liquid crystal polymer resin with a melting point of Tm1 and the liquid crystal polymer resin with the melting point of Tm2, the Tm1 is larger than the Tm2, and the liquid crystal polymer resin with the melting point of Tm2 accounts for 1.0-30.0% of the total mass of the liquid crystal polymer film. Technical problems that in the prior art, bonding strength between the liquid crystal polymer film and the metal conducting layer of a liquid crystal polymersubstrate is low, or the heat resistance of the liquid crystal polymer film is poor, or the high-frequency characteristic of the liquid crystal polymer film is poor are mainly solved.

Description

technical field [0001] The invention belongs to the technical field of processing and manufacturing liquid crystal polymer materials, and in particular relates to a liquid crystal polymer substrate and a processing method thereof. Background technique [0002] With the upgrading of consumption and the popularity of portable and wearable smart devices, electronic devices including smart phones, smart bracelets, personal computers, and driverless information terminals have gradually integrated into people's lives. At the same time, with the advent of the 5G era, higher requirements have been placed on the electrical performance, data capacity, miniaturization, and light weight of electronic equipment. Correspondingly, the flexible and flexible liquid crystals used in these electronic equipment have high The demand for molecular substrates is also increasing rapidly. [0003] Flexible liquid crystal polymer substrates are usually obtained by laminating copper foil, adhesives, ...

Claims

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Application Information

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IPC IPC(8): G02F1/1333
CPCG02F1/133305G02F1/1333
Inventor 李良彬赵浩远
Owner UNIV OF SCI & TECH OF CHINA
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