Anisotropic conductive film and manufacturing method thereof

Abstract

The invention relates to an anisotropic conductive film and a manufacturing method thereof. The method comprises the following steps: covering a plurality of conductive particles with a photosensitiveresin layer; mixing the conductive particles covered with the photosensitive resin layer with a binder and carrying out heating to form a mixture; spreading the mixture to expose the two end surfacesof each conductive particle covered with the photosensitive resin layer perpendicular to the spreading plane; solidifying the mixture to form a film; illuminating the upper and lower surfaces of thefilm-like mixture so that the photosensitive resin on the exposed surfaces of each conductive particle covered with the photosensitive resin layer disappears and the conductive particles are exposed.By using the anisotropic conductive film and the manufacturing method thereof, the adjacent space of conductive particles is saved, the conductivity is improved, and the influence on the shape or conductive effect of the anisotropic conductive film is avoided.

Description

technical field [0001] The invention relates to the field of anisotropic conductive films, in particular to an anisotropic conductive film and a manufacturing method thereof. Background technique [0002] The main components of anisotropic conductive film (ACF, Anisotropic conductive film) include resin and conductive particles, and are mainly used to connect different substrates and circuits. Up and down (Z direction) electrical conduction, left and right plane (X and Y direction) insulation characteristics. [0003] In the preparation process of the anisotropic conductive film, in order to ensure the electrical conduction of the conductive particles in the upper and lower directions (Z direction) and the insulation of the left and right planes (X and Y directions), an insulating spacer needs to be provided between the conductive particles. In the prior art, insulating spheres are added to the anisotropic conductive film to insulate the conductive particles in the left and...

AI Technical Summary

Problems solved by technology

In the prior art, insulating spheres are added to the anisotropic conductive film to insulate the conductive particles in the left and right planes (X and Y directions). Since the anisotropic conductive properties of the anisotropic conductive film mainly depend on the filling rate of the conductive particles, the conductive The higher the particle filling rate is, the lower the filling rate of the insulating sphere is, and the conductive particles in the anisotropic conductive film are more likely to fail due to aggregation

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