Preparation method of flexible copper clad liquid crystal high molecular substrate

Abstract

The invention discloses a preparation method of a flexible copper clad liquid crystal high molecular substrate. The preparation method comprises the following steps of firstly coating a layer of LCP (Liquid Crystal Polymer) glue on a layer of copper foil, afterwards, oven-drying by using a tunnel drying oven, then laminating the obtained copper foil with an LCP glue layer with another layer of copper foil, so as to obtain a substrate, and afterwards, carrying out post cure through a program drying oven, so as to obtain the flexible copper clad liquid crystal high molecular substrate. Through the method, the ultra-thinness of the thickness of the LCP glue layer is quite easily achieved; the development that an electronic product tends to be ultra-thin in future is facilitated; moreover, a high-temperature press is replaced with a low-temperature press during lamination; the cost is greatly decreased; the production capacity is also improved; a post-cure step is carried out on the laminated substrate; the internal stress is effectively removed; the bonding strength and the cohesion strength are improved and the strength of the whole flexible copper clad liquid crystal high molecularsubstrate is promoted.

Description

technical field [0001] The invention belongs to the field of copper-clad foil boards, and in particular relates to a preparation method of a flexible copper-clad liquid crystal polymer substrate. Background technique [0002] Liquid crystal polymer, also called liquid crystal polymer, is Liquid Crystal Polymer in English, abbreviated as LCP, is a new type of polymer material, it will generally become liquid crystal in a certain heating state, so it is named after it, liquid crystal Polymer refers to a polymer compound that can exist in a liquid crystal phase under certain conditions, and its characteristic is that the molecule has a relatively high molecular weight and has an ordered orientation. [0003] The current preparation method of flexible copper-clad liquid crystal polymer substrate is: directly purchase LCP film, and then produce it by high-temperature pressing method. However, in this method, LCP film is mostly extruded into film, which is difficult to prepare. T...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high production cost of the above-mentioned flexible copper-clad liquid crystal polymer substrate, low production capacity and difficulty in thinning the LCP film

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