FILM FOR ELECTRONIC CIRCUIT BOARD AND ELECTRONIC CIRCUIT BOARD

摘要

PROBLEM TO BE SOLVED: To provide a film for an electronic circuit board on which a minute electronic circuit can be formed with an LDS method or the like and has extremely outstanding dielectric characteristics, and an electronic circuit board that has an electronic circuit formed on the film for an electronic circuit board.SOLUTION: A film for an electronic circuit board according to the present invention has a configuration in which light-activated metal oxide crystal is dispersed in a base material film molded from a liquid crystal polymer; the ratio of the light-activated metal oxide crystal relative to the total mass of the film is 5 mass% or more and 20 mass% or less; the coefficient of linear expansion in the plane direction of the base material film is 3 ppm/°C or more and 30 ppm/°C or less; the ratio of the coefficient of linear expansion in one direction of the plane direction to the coefficient of linear expansion in a direction orthogonal to said direction is 0.4 or more and 2.5 or less.SELECTED DRAWING: None