Abstract: There are provided an anodizing method by which straight micropores can be formed and a manufacturing method for an anisotropic conductive member in which a filling defect of a conductive material is suppressed. The anodizing method is a method including subjecting a surface of a valve metal plate to a plurality of times of anodization and forming an anodized film having micropores present in a thickness direction of the valve metal plate and having a barrier layer present in the bottom part of the micropores, on the surface of the valve metal plate. In steps of second and subsequent times of anodization of the plurality of times of anodization, a current increasing period and a current keeping period are continuous. The current increasing period is a period in which a quantity of current increase is more than 0 amperes per square meter per second and 0.2 amperes per square meter per second or less, and which is 10 minutes or less.

Abstract: Provided is a multilayer wiring substrate capable of achieving excellent conduction reliability. The multilayer wiring substrate is formed by laminating an anisotropic conductive member including an insulating base which is made of an inorganic material, a plurality of conductive paths which are made of a conductive member, penetrate the insulating base in a thickness direction thereof and are provided in a mutually insulated state, and a pressure sensitive adhesive layer which is provided on a surface of the insulating base, in which each conductive path has a protrusion protruding from the surface of the insulating base, and a wiring substrate having a substrate and one or more electrodes to be formed on the substrate, and conductive paths which come into contact with the electrode among the plurality of conductive paths are deformed so that adjacent conductive paths come into contact with each other.

Abstract: An object of the present invention is to provide an anisotropic conductive member capable of achieving excellent conduction reliability and a multilayer wiring substrate using the same. The anisotropic conductive member of the present invention includes an insulating base which is made of an inorganic material, a plurality of conductive paths which are made of a conductive member, penetrate the insulating base in a thickness direction thereof and are provided in a mutually insulated state, and a pressure sensitive adhesive layer which is provided on a surface of the insulating base, in which each of the conductive paths has a protrusion which protrudes from the surface of the insulating base, and an end of the protrusion of each of the conductive paths is exposed or protrudes from the surface of the pressure sensitive adhesive layer.

Abstract: Provided is a multilayer wiring substrate capable of achieving excellent conduction reliability. The multilayer wiring substrate is formed by laminating an anisotropic conductive member including an insulating base which is made of an inorganic material, a plurality of conductive paths which are made of a conductive member, penetrate the insulating base in a thickness direction thereof and are provided in a mutually insulated state, and a pressure sensitive adhesive layer which is provided on a surface of the insulating base, in which each conductive path has a protrusion protruding from the surface of the insulating base, and a wiring substrate having a substrate and one or more electrodes to be formed on the substrate, and conductive paths which come into contact with the electrode among the plurality of conductive paths are deformed so that adjacent conductive paths come into contact with each other.

Abstract: An object of the present invention is to provide an anisotropic conductive member capable of achieving excellent conduction reliability and a multilayer wiring substrate using the same. The anisotropic conductive member of the present invention includes an insulating base which is made of an inorganic material, a plurality of conductive paths which are made of a conductive member, penetrate the insulating base in a thickness direction thereof and are provided in a mutually insulated state, and a pressure sensitive adhesive layer which is provided on a surface of the insulating base, in which each of the conductive paths has a protrusion which protrudes from the surface of the insulating base, and an end of the protrusion of each of the conductive paths is exposed or protrudes from the surface of the pressure sensitive adhesive layer.