Magnetic head assembly having a rotational arm for electrically connecting the magnetic head to an external circuit and methods of manufacturing the same

Abstract

A connecting portion of the external side FPC board connected to a control circuit provided outside of a magnetic head assembly and connecting terminals of arm side FPC boards respectively connected to magnetic heads are overlapped with an anisotropic conductive tape having anisotropic conductivity in the direction of thickness in between. The anisotropic conductive tape is applied pressure between the connecting portion and the connecting terminals with heating to a temperature of, for example, 150° C. and is set. As a result, the connecting portion and the connecting terminals are connected. The anisotropic conductive tape has anisotropic conductivity only in the direction of thickness so that conduction of wirings adjacent each other is prevented although a plurality of wirings is formed on the connecting portion and the connecting terminals.

What is claimed is:  
     
         1 . A magnetic head assembly comprising: 
 a magnetic head;    a rotational arm mounting the magnetic head;    an arm side-wiring member, one end is electrically connected to the magnetic head and the other end has a first connecting portion, provided on the rotational arm; and    an external side-wiring member, one end is able to electrically connected to an external circuit provided separately form the rotational arm and the other end has a second connecting portion,    wherein the first connecting portion of the arm side-wiring member and the second connecting portion of the external side-wiring member are overlapped with a predetermined conductive adhesive member having anisotropic conductivity in between and electrically connected to each other on the rotational arm.    
     
     
         2 . A magnetic head assembly according to  claim 1 , wherein the arm side-wiring member comprises a wiring pattern made of a conductive material formed on the rotational arm and a relay board electrically connecting the wiring pattern and the external side-wiring member, wherein the relay board and the wiring pattern are overlapped with a predetermined conductive adhesive member having anisotropic conductivity in between and electrically connected to each other.