Liquid crystal polymer film and substrate for high-speed communication
A liquid crystal polymer film, liquid crystal polymer technology, applied in liquid crystal materials, circuit substrate materials, chemical instruments and methods, etc., can solve the problems of reduced circuit yield and reliability, reduced surface and smoothness, surface surface and Easy to reduce smoothness and other problems, to achieve the effect of reducing anisotropy, good smoothness and surface property
Pending Publication Date: 2022-05-03
FUJIFILM CORP
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Problems solved by technology
It may be that due to the strong alignment of the liquid crystal polymer, many wrinkles and surface irregularities tend to occur in the obtained liquid crystal polymer film, and the surface property and smoothness of the surface tend to decrease.
As a film substrate for high-frequency circuit boards, the decrease in the surface properties and smoothness of the surface leads to a decrease in the yield and reliability of the circuit formed on the film, so research is being conducted to improve the surface properties of liquid crystal polymer films.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0466] Hereinafter, examples and comparative examples of the present invention will be described.
[0467] The liquid crystal polymer films of Examples 1 to 34 and Comparative Example 1 were produced by the production method shown below, and evaluations described later were performed. First, the manufacturing method of each Example and a comparative example is demonstrated.
[0468] [Material]
[0469] Materials used in the production of the liquid crystal polymer film are shown below.
[0470] 〔Liquid crystal polymer component〕
[0471] · LCP1: Laperos C-950 manufactured by Polyplastics Co., Ltd., having a melting point of about 320° C., corresponding to a thermotropic liquid crystal polymer.
[0472] · LCP2: Laperos A-950 manufactured by Polyplastics Co., Ltd., having a melting point of about 280° C., corresponding to a thermotropic liquid crystal polymer.
[0473] Both LCP1 and LCP2 are polymers represented by the following chemical formulas. However, the content ratio...
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Abstract
Provided is a liquid crystal polymer film having good smoothness and surface properties and reduced anisotropy. Also provided is a substrate for high-speed communication using the liquid crystal polymer film. This liquid crystal polymer film contains a liquid crystal polymer component and at least one component selected from the group consisting of an olefin component, a crosslinking component, and a compatible component.
Description
technical field [0001] The invention relates to a liquid crystal polymer film and a substrate for high-speed communication. Background technique [0002] In the fifth-generation (5G) mobile communication system, which is called the next-generation communication technology, higher frequencies and wider frequency bands are used than before. Therefore, as substrate films for circuit boards used in 5G mobile communication systems, substrate films with low dielectric constant and low dielectric dissipation factor characteristics are required, and various companies are developing based on various raw materials. One of them is a liquid crystal polymer film. The liquid crystal polymer (LCP: liquid crystal polymer) film can obtain a low dielectric constant and a dielectric loss factor lower than the usual polyimide and epoxy glass films in the 4th generation (4G) mobile communication system. [0003] Since the liquid crystal polymer has a rod-like molecular structure, it has strong...
Claims
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IPC IPC(8): C08L67/00C08L23/06C08L23/08C08L33/10C08L35/00C08L53/02C08K5/134C08K5/526C08J5/18H05K1/03
CPCC08J5/18H05K1/0353C08J2367/00C08J2423/06C08J2453/02C08J2423/08C08J2433/10C08J2435/00C08K5/1345C08K5/526B29C48/08C09K19/3809C09K19/38
Inventor 泽谷岳尧木户健夫山田晃
Owner FUJIFILM CORP