Anisotropic conductive film and connected structure

An anisotropic conductive film comprising an insulating adhesive layer and conductive particles arranged in the insulating adhesive layer in a lattice-like manner, wherein

• when among center distances between an arbitrary conductive particle and conductive particles adjacent to the conductive particle, a shortest distance to the arbitrary conductive particle is defined as a first center distance, and a next shortest distance is defined as a second center distance,
• the first center distance and the second center distance are each 1.5 to 5 times a particle diameter of the conductive particles, and
• regarding an acute triangle formed by an arbitrary conductive particle P0, a conductive particle P1 spaced apart from the arbitrary conductive particle P0 by the first center distance, and a conductive particle P2 spaced apart from the arbitrary conductive particle P0 by the first center distance or the second center distance, an acute angle a formed between a straight line orthogonal to a direction (hereinafter, referred to as a first array direction) of a straight line passing through the conductive particles P0 and P1 and a direction (hereinafter, referred to as a second array direction) of a straight line passing through the conductive particles P1 and P2 is 18 to 35°, and
• when a direction passing through the conductive particles P0 and P2 is defined as a third array direction, the first array direction, the second array direction, and an angle β formed between the first array direction and the longitudinal direction of the anisotropic conductive film is 5 to 25°.

An anisotropic conductive film comprising an insulating adhesive layer and conductive particles arranged in the insulating adhesive layer in a lattice-like manner, wherein

• when among center distances between an arbitrary conductive particle and conductive particles adjacent to the conductive particle, a shortest distance to the arbitrary conductive particle is defined as a first center distance, and a next shortest distance is defined as a second center distance,
• the first center distance and the second center distance are each 1.5 to 5 times a particle diameter of the conductive particles, and
• regarding an acute triangle formed by an arbitrary conductive particle P0, a conductive particle P1 spaced apart from the arbitrary conductive particle P0 by the first center distance, and a conductive particle P2 spaced apart from the arbitrary conductive particle P0 by the first center distance or the second center distance, an acute angle a formed between a straight line orthogonal to a direction (hereinafter, referred to as a first array direction) of a straight line passing through the conductive particles P0 and P1 and a direction (hereinafter, referred to as a second array direction) of a straight line passing through the conductive particles PI and P2 is 18 to 35°, and
• an external tangent of a conductive particle P, which extends in the direction orthogonal to the longitudinal direction of the anisotropic conductive film, passes through a conductive particle adjacent to the conductive particle P.