ANISOTROPIC CONDUCTIVE FILM AND ADHESION METHOD THEREOF
The invention concerns an anisotropic conductive film used for adhering IC, e.g., LCD displays, etc. The conductive film is characterized by comprising a thermosetting adhesive, super-paramagnetic metal oxide nano-particles, and conductive particles, the super-paramagnetic metal oxide nano-particles and the conductive particles being dispersed in a thermosetting composition. With such a configuration in the invention, it is advantageous that low temperature curing is implemented by means of high frequencies and positions of particles can be controlled by means of a magnetic field in adhering IC, e.g., LCD displays, so that high connection reliability is achieved for connection electrodes of fine pitches.
1 . An anisotropic conductive film, characterized in that it comprises:
(1) a thermosetting adhesive;
(2) super-paramagnetic metal oxide nano-particles; and
(3) conductive particles.
2 . The anisotropic conductive film as claimed in claim 1 , characterized in that the surface of the (2) super-paramagnetic metal oxide nano-particles is coated with organic or inorganic material.
3 . The anisotropic conductive film as claimed in claim 2 , characterized in that the surface of the (2) super-paramagnetic metal oxide nano-particles coated with organic or inorganic material is plated with nickel and/or gold.
4 . The anisotropic conductive film as claimed in claim 1 , characterized in that the (2) super-paramagnetic metal oxide nano-particles comprise oxides of Fe, Co, Ni, FePt, etc., and the size of super-paramagnetic metal oxide nano-particles is of 1 to 100 nm.
5 . The anisotropic conductive film as claimed in claim 1 , characterized in that the surface of the (2) super-paramagnetic metal oxide nano-particles is plated with nickel and/or gold.
6 . A method of adhering an anisotropic conductive film as claimed in claim 1 , characterized in that the film is adhered by means of a heating instrument using an alternating field of high frequencies and a separate magnetic field generator.
7 . A method of adhering an anisotropic conductive film as claimed in claim 2 , characterized in that the film is adhered by means of a heating instrument using an alternating field of high frequencies and a separate magnetic field generator.
8 . A method of adhering an anisotropic conductive film as claimed in claim 3 , characterized in that the film is adhered by means of a heating instrument using an alternating field of high frequencies and a separate magnetic field generator.
9 . A method of adhering an anisotropic conductive film as claimed in claim 4 , characterized in that the film is adhered by means of a heating instrument using an alternating field of high frequencies and a separate magnetic field generator.
10 . A method of adhering an anisotropic conductive film as claimed in claim 5 , characterized in that the film is adhered by means of a heating instrument using an alternating field of high frequencies and a separate magnetic field generator.