Abstract
The applications of liquid-crystalline polymers that are attracting the most attention in electrical and electronic material fields are the applications in electronic circuit boards. The merits for these electronic circuit board applications are the superior electrical insulating properties and dielectric characteristics that liquid-crystalline polymer films have. In terms of electrical insulating properties, the maintaining of the electrical insulating properties in a high moisture absorbing environment and the obtaining of stability in dielectric characteristics even in high-temperature, high humidity environments are attracting attention. It is predicted that there is a strong demand in the future for liquid-crystalline polymer films, with electronic circuit boards related to information and communications, starting with computers and portable equipment and electronic circuit boards related to automobiles, starting with ITS. Because of these implications, Sumitomo Chemical is moving forward with the development of electronic circuit board applications using films obtained with a solvent -casting method for a liquid-crystalline polymer we have newly developed. In this paper, the author gives an introduction to the status of this development
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