KR19980042877A - Read / write head unit - Google Patents

Abstract

The present invention relates to a read / write head device having a head for reading information from a recording medium and recording information on the recording medium, the device being coupled to the head to record and / or read information on the recording medium; And a head support member mechanically coupled to the head at a mating surface in contact with an area of the head on which the element is disposed.

Description

Read / write head unit

The present invention relates to a read / write head device having a head mounted with an element for reading / writing information on an information recording medium.

As is known, read / write head devices such as magnetic disk drive devices and optical disk drive devices are widely used as external memory devices for computers.

Typically, a magnetic disk drive apparatus includes a magnetic recording medium such as a magnetic disk on which information can be recorded, and a magnetic head for reproducing and recording information on the magnetic disk while the magnetic disk is rotating. The magnetic head has a configuration in which a fine gap is maintained and floated on the magnetic disk by using dynamic pressure generated by the rotation of the magnetic disk.

1 shows the configuration of main parts of a conventional magnetic disk head apparatus.

1 shows a magnetic head. The magnetic head 1 is composed of a slider 2 formed in a suitable size and an element 3 manufactured by a thin film forming technique on the rear end of the slider 2 or the like, which element 3 is located on the magnetic disk M. Record and play back information. The magnetic pole is formed in the element 3, and the magnetic pole 4 is located on the side of the magnetic disk M.

Practically all surfaces of the magnetic head 1 opposite the surface facing the magnetic disk M are gimbals made of a plastic material to match the position of the magnetic head 1 with the surface of the magnetic disk M. FIG. It is fixed by the adhesive agent 6 to (5).

The gimbal 5 is fixed to the suspension 7 by a method such as spot welding by pushing the magnetic head 1 against the magnetic disk M. As shown in FIG. The base end side of the suspension 7 is connected to a rotation support mechanism in which the suspension 7 supports rotation freely. The suspension 7 has a configuration in which a pivot 8 is provided to apply a pressing force from the suspension 7 at a predetermined position of the magnetic head 1.

In addition, the element 3 is provided with an electrode 9 provided for exchanging signals with the outside. One end of each lead wire 10 is connected to these electrodes 9. This lead wire 10 operates along the suspension 7 and is connected to a signal transmission / reception unit not shown at the other end of the lead wire.

However, the magnetic head device of the prior art configured as described above has the following problems.

Recently, there is a demand for the read / write head device to be able to exert a stable function even with severe temperature changes. However, in the conventional case, the gimbal, the head and the adhesive are each composed of different materials, and their thermal expansion coefficients are different. This results in a slight curvature change in the face of the magnetic head 1 in contact with the magnetic disk M, as shown by the double dashed line A in FIG. 1. The curvature in the form of a crown) causes a change in the floating height of the magnetic head 1, and hinders the reduction of the floating height or the improvement of the recording density of the magnetic head 1.

In recent years, with the miniaturization of the magnetic disk driving apparatus and the increase in the recording / reproducing speed, the size of the magnetic head itself has also been reduced. As a result, due to the dynamic pressure generated between the magnetic head 1 and the magnetic disk M, there is a tendency for the strength of the air film to maintain a stable state of the magnetic head 1 to decrease.

To compensate for this tendency, it is necessary to further improve the flexibility of the gimbal 5 provided between the magnetic head 1 and the suspension 8 so that the magnetic head 1 is engaged with the magnetic disk M in a stable state. There is.

However, conventionally, it is necessary to use the lead wire 10 used for the change of the signal between the element 3 and the recording / reproducing amplifier having a relatively high intensity. Because of the strength of the lead wire 10, it was difficult to make the magnetic head 1 matching the magnetic disk M in a stable state.

The proposed technique to solve this problem is to make wires on gimbals or suspensions using lithography. There is a need for a simple technique capable of electrically connecting the wiring and the element provided on the magnetic head.

Also recently, in order to improve the recording density of the magnetic disk drive apparatus, it is necessary to make the gap between the magnetic disk M and the magnetic head 1 as small as possible. This has led to the development of a contact recording technique in which recording / reproducing is performed with the magnetic head 1 and the magnetic disk M in contact.

As a method of this contact recording technique, a method in which a part of the slider is brought into contact with the magnetic disk M has been proposed. (See Japanese Patent Publication No. H07-307069.) In this system, a floating pad is provided in the magnetic head portion. Most of the downward pressure resulting from the suspension is generated by the floating force, and the remaining small amount of pressure is distributed to the contact force. The flotation force generated in the flotation pad must be kept constant to maintain a constant contact force.

However, a change in the floating pad state resulting from the change in adhesion force in the gimbal will result in the same problems as experienced in the floating head described above.

Thus, in the conventional recording / reproducing apparatus, due to the mechanical coupling structure by the adhesion between the magnetic head and the suspension, deformation of the floating surface of the magnetic head occurs due to temperature change. Such deformation causes a problem that causes fluctuations in the amount of floating. Moreover, when wiring on the suspension or gimbal is generated using lithography, a simple technique requires a simple technique of electrically connecting these wirings and the recording / reproducing element provided on the magnetic head.

SUMMARY OF THE INVENTION An object of the present invention is to provide a read / write head apparatus which realizes stable floating characteristics or contact characteristics and which can easily perform mechanical and electrical coupling of a magnetic head and suspension.

Another object of the present invention is to provide a read / write head apparatus capable of reducing the height of the magnetic head floating and improving the recording density.

1 is a side view showing a conventional read / write head device incorporated in a magnetic disk drive device.

2 is an exploded perspective view of a magnetic disk drive device incorporating a read / write head device according to a first embodiment of the present invention.

3 is a side view of the read / write head device shown in FIG.

4 is a side view of the read / write head device in the direction of the arrow along the line B-B of FIG. 3;

Fig. 5 is a side view of the read / write head device according to the second embodiment of the present invention.

FIG. 6 is a perspective view showing a suspension incorporated in the read / write head device shown in FIG. 5; FIG.

FIG. 7 is a cross sectional view of the suspension in the direction of the arrow along line C-C in FIG. 6; FIG.

8 is a cross-sectional view of the suspension in the direction of the arrow along the line D-D of FIG. 6;

FIG. 9 is a cross-sectional view illustrating a coupling mode of a junction of a suspension and a magnetic head of the read / write head device shown in FIG. 5; FIG.

FIG. 10 is a cross-sectional view illustrating the advantages of the coupling mode shown in FIG. 9. FIG.

11 is a flow chart illustrating a procedure of the coupling process of the magnetic head and the suspension.

12 is a side view of a read / write head device according to a third embodiment of the present invention.

FIG. 13 is a perspective view showing a suspension incorporated in the read / write head device shown in FIG. 12; FIG.

FIG. 14 is a cross-sectional view showing a coupling mode of a junction portion of a magnetic head and a suspension of the read / write head device shown in FIG. 12;

15 is a flowchart for explaining the procedure of the coupling process of the magnetic head and the suspension.

Fig. 16 is a side view of the read / write head device according to the fourth embodiment of the present invention.

FIG. 17 is a side view of the read / write head device in the direction of the arrow along the F-F line of FIG. 16; FIG.

18 is a side view illustrating a modified example of the read / write head device shown in FIG. 16;

Fig. 19 is a side view of a read / write head device according to a fifth embodiment of the present invention.

20 is a sectional view showing a suspension incorporated in the read / write head device shown in FIG. 19;

FIG. 21 is a cross-sectional view showing a coupling mode of a junction portion of a magnetic head and a suspension device of the read / write head device shown in FIG. 19; FIG.

Fig. 22 is a flowchart for explaining the procedure of the coupling process of the magnetic head and the suspension.

Fig. 23 is a perspective view showing a major part of the read / write head device according to the sixth embodiment of the present invention.

FIG. 24 is a side view of the main part shown in FIG. 23; FIG.

Explanation of symbols for main part of city

21: magnetic disk

22: spindle motor

23, 23a-23e: Magnetic head

24, 24a ~ 24e: Suspension

31: slider

32: device

33: protrusion

34a, 34b, 35a, 35b, 37a, 37b, 38a, 38b: electrode

41a, 41b, 42a, 42b, 74a, 74b: wiring

SUMMARY OF THE INVENTION The present invention provides a read / write head apparatus having a head for recording information on and reading information from a recording medium for realizing this object, the read / write head device being coupled to the head to read and / or information on the recording medium. And a head support member which is mechanically coupled to the head at an engaging surface in contact with an area of the head portion in which the element is disposed, and which writes.

The device further includes a wiring integrally provided with the head support member from the coupling surface to electrically couple the device at the coupling surface.

In the read / write head apparatus according to the present invention, the head has a projection near the placement area of the element on the surface located on the side opposite to the surface located on the side of the recording medium.

Further, a read / write head device having a head for reading information from a recording medium and recording information on the recording medium, the device coupled to the head for reading and / or writing information on the recording medium, and the head And a head support member mechanically coupled to the head at a mating surface in contact with an area of the head on which the first electrode is electrically mounted and electrically coupled to the element, and on the head support member. A second electrode electrically coupled with the first electrode to connect with the first electrode, and wires integrally provided along the head support member from the second electrode to electrically couple with the element at the coupling surface; It is characterized by.

In the read / write head apparatus according to the present invention, the first electrode is disposed at the rear end of the head, and the engaging surface of the head support member is formed in a curved state.

In the read / write head apparatus according to the present invention, the head support member has an elastic support structure for supporting the second electrode independently of each other.

Further, in the read / write head apparatus according to the present invention, the elastic support member is formed by a notch or a hole provided in a portion where a mating surface is formed to arrange the second electrode in an insulated form, respectively.

In the read / write head apparatus according to the present invention, the head support member provides a gimbal function for mating the head on a recording medium.

Further, the present invention provides an information recording apparatus having a head for recording and reproducing information on a recording medium, comprising: an element coupled to the head for recording and / or reproducing information on the recording medium; A head support member mechanically coupled to the head at a mating surface in contact with an area of the head, and a support arm coupled to the head support member at a base of a cantilever shape to move the head onto the recording medium. do.

In the information recording apparatus according to the present invention, the apparatus further comprises a wiring integrally provided along the head support member from the coupling surface to electrically couple with the element at the coupling surface.

In the information recording apparatus, the head has a protruding portion in the vicinity of an arrangement area of the element on the surface located on the side opposite to the surface located on the side of the recording medium.

In addition, the present invention provides an information recording apparatus having a head for recording and reproducing information on a recording medium, comprising: an element coupled to the head to record and / or read information on the recording medium; The device includes a first electrode electrically coupled, a head support member mechanically coupled to the head at a mating surface in contact with an area of the head on which the device is disposed, and a head support member coupled to the head support member at a base of a cantilever shape. A support arm for moving the head onto the recording medium, a second electrode provided on the head support member and electrically coupled with the first electrode for coupling to the first electrode, and electrically coupled with the element at the engagement surface. And a wire integrally installed along the head support member from the second electrode so as to be coupled thereto. All.

Embodiments of the present invention are described with reference to the drawings.

Fig. 2 shows a read / write head device incorporating a magnetic disk drive device according to the first embodiment of the present invention. An exploded perspective view of the magnetic disk drive device is described as an example of the same type as the information recording device. The present invention is not limited to the magnetic disk drive device exemplified herein, but an information recording device such as an optical disk drive device or other read / write head device can also be applied.

In Fig. 2, 21 represents a magnetic disk. This magnetic disk 21 is mounted to a spindle motor 22 that rotates at a prescribed rotational speed. The magnetic head 23 constituting the head support member and located at the tip of the suspension 24 in the form of a thin plate performs recording and reproduction of information on the magnetic disk 21 in a floating state (contact state). The base end of the suspension 24 is connected to one end of the actuator arm 25 in the form of a cantilever. The actuator arm 25 has a bobbin portion and the like for holding a drive coil, not shown. At the other end of the actuator arm 25, a voice coil motor 26, which is a kind of linear motor, is provided. The voice coil motor 26 includes a drive coil, not shown, wound around the bobbin portion of the actuator arm 25, and a permanent magnet and a yoke disposed against the drive coil therebetween. Permanent magnets and yokes consist of magnetic circuits. The actuator arm 25 is supported by a ball bearing (not shown) provided at two points of the upper and lower portions of the fixed shaft 27, and the vibration motion concentrated on the fixed shaft 27 by the driving force by the voice coil motor 26. This becomes possible.

Embodiments of the magnetic head 23 and the suspension 24 are configured as shown in FIGS. 3 and 4.

The magnetic head 23 is composed of a slider 31 and an element 32 formed on the rear end face of the slider 31 by using a thin film forming technique, which reads the information on the magnetic disk M. As shown in FIG. And record.

Here, a case where an MR (magneto-resistance) element is used as the element 32 will be described. The element 32 has at least two magnetic poles, a recording magnetic pole and a reading magnetic pole. These magnetic poles are located in contact with the magnetic disk M. A protrusion 33 partially protruding toward the suspension 24 is formed at the surface opposite to the surface located closest to the magnetic disk M and the region where the element 32 is formed. In addition, the electrodes 34a, 34b, 35a, 35b provided for exchanging signals with the outside are located at the end face of the element 32, i.e., at a position close to the portion where the protrusion 33 is formed at the rear end face of the magnetic head 23. This is provided in an exposed state at the ratio of two electrodes to the aforementioned stimulus.

Suspension 24 is configured to exhibit the function of gimbal support. At the distal end of the suspension 24, a mating surface 36 is provided on the surface opposite the projecting portion 33 and the arrangement area of the element 32. On the surface provided with the engaging surface 36 of the suspension 24, four unillustrated wirings are formed in the state of insulation coating by lithography. 4, the electrodes 37a, 37b, 38a, and 38b are exposed to the mating surface 36 at an angle of 90 degrees with respect to the electrodes 34a, 34b, 35a, and 35b. It is installed. The other end of the wiring operates along the surface on the suspension 24 at the base of the suspension 24.

The magnetic head 23 is mechanically and electrically coupled to the suspension 24 formed in this way. In particular, the upper surface of the projection 33 provided on the magnetic head 23 is fixed by the adhesive 39 to the engaging surface 36 provided on the suspension 24. Gold corresponding to one of the electrodes 34a, 34b, 35a, 35b provided on the magnetic head 24 and the electrodes 37a, 37b, 38a, 38b provided on the engaging surface 36 of the suspension 24 is gold. The balls 40 are combined by ultrasonic coupling.

In this way, according to this embodiment, the mechanical coupling of the magnetic head 23 and the suspension 24 of the head support member constitutes an extremely limited range of the arrangement area of the magnetic head 23 or the element 32 adjacent thereto. It is explained. Therefore, the variation in the curvature of the floating surface of the head is limited to a very limited range because of the difference in the coefficient of thermal expansion of the constituent material, and in other ranges, the curvature change does not occur even if the environmental temperature changes. Therefore, fluctuations in the curvature of the floating surface of the head can be prevented due to the change of the environmental temperature, so that the floating height of the head can be reduced and the recording density can be improved.

In addition, the magnetic head 23 is attached to the suspension 24 at the end of the slider 31. This fixation at one end of the magnetic head 23 reduces the problem of non-uniform thermal expansion or contraction that the magnetic head 23 is pivotable with respect to the suspension 24. Therefore, compared with the case where the fixed position is set at the center portion of the slider 31, for example, the difference in height between the periphery and the vertex in the case where the entire slider is convexly deformed can be made small, and the viewpoint of the amount of fluctuation of the head injury is reduced. In that case, it is hardly affected.

Further, electrodes 37a, 37b, 38a, 38b are provided on the suspension surface 24 to form an angle of 90 degrees with respect to the electrodes 34a, 34b, 35a, 35b provided on the magnetic head 23. Coupling between the corresponding electrode pairs can be made easily. Thus, the advantage of providing wiring using the slab technique on the suspension 24 can be utilized to the maximum.

5 shows a read / write head apparatus according to a second embodiment of the present invention. In this embodiment, the read / write head device is incorporated in the magnetic disk drive device of the information recording / reproducing device.

The whole structure of the presently described read / write head device is the same as that of the previous embodiment in that it consists of a magnetic head 23a and a suspension 24a constituting a head support member for supporting the magnetic head 23a at its tip. .

The magnetic head 23a is composed of a slider 31 and an element 32 formed at the end of the slider 31 by a thin film forming technique or the like to read and write information on the magnetic disk. The element 32 includes at least two magnetic poles, a recording magnetic pole and a reading magnetic pole, which are formed to be located on the plane closest to the magnetic disk. As shown in Fig. 9, in the magnetic head 23a according to this embodiment, the electrodes 34a, 34b, 35a, and 35b, which are provided for the exchange of signals with the outside, are opposed to the surface located closest to the magnetic disk. Is placed on the face. In particular, each of the recording stimuli and reading stimuli described above is provided in an exposed ratio of two to one.

The suspension 24a is made of a high strength material having the properties of a spring such as phosphorescent copper or stainless steel using a spring, a specific example of which is formed as shown in FIG. In particular, at the rear end surface of the suspension 24a, four wires 41a, 41b, 42a, 42b are provided for transmitting signals to the magnetic head 23a and the read / write amplifier. The wirings 41a, 41b, 42a, 42b are made of copper. In addition, the engaging surface 43 is provided on the rear end surface of the front end of the suspension 24a. In addition, at the tip portion 44 formed on the engaging surface 43, three notches 45 are formed in the width direction extending in the longitudinal direction of the suspension 24a. The tip portion 44 is divided into four elastic protrusions 46a, 46b, 46c, 46d by the notch 45.

The rear end face of each protrusion 46a, 46b, 46c, 46d is an electrode 47a, 47b, 48a, 48b electrically coupled to the electrodes 34a, 34b, 35a, 35b disposed on the magnetic head 23a. Is placed in an exposed state and is coupled to the corresponding wirings 41a, 41b, 42a, 42b.

In the special case shown in FIG. 7, the wirings 41a, 41b, 42a, 42b are formed on the insulating layer 50 provided on the end surface of the suspension 24a, and the insulating overlay layer 51 formed thereon. Protected by 8, the electrodes 47a, 47b, 48a, 48b are formed on the insulating layer 52 provided on the rear end face of the protrusions 46a, 46b, 46c, 46d, and the surfaces of these electrodes are peeled off. It is surrounded by an insulating overlay layer 53 to prevent it from falling. In addition, the exposed outer surface is protected by plating layer 54 to prevent alteration of material properties. The insulating layers 50 and 52 and the overlay layers 51 and 53 are made of, for example, an organic insulating material such as epoxy resin or polyimide resin, and the plating layer 54 is made of nickel and gold.

The magnetic head 23a is electrically and mechanically coupled to the formed suspension 24a. In particular, the gold ball bumps 55 are formed on the electrodes 47a, 47b, 48a, 48b formed on the respective projections 46a, 46b, 46c, 46d of the suspension 24a, and formed on the magnetic head 23a. The electrodes 34a, 34b, 35a, 35b are pressurized in contact with this gold ball bump 55. In this state, the ultrasonic processing apparatus provides ultrasonic waves to the surface of each protrusion, so that ultrasonic coupling of the electrodes 47a, 47b, 48a, and 48b and the electrodes 34a, 34b, 35a and 35b is performed.

11 is a block diagram of the process steps of connecting the suspension 24a and the magnetic head 23a by the ultrasonic coupling technique using gold ball bumps.

First, the gold ball bumps 55 are formed on the electrodes 47a, 47b, 48a, and 48b on the suspension 24a by the wiring coupling method, respectively. The suspension 24a provided on the magnetic head 23a and the bump portions of the electrodes 34a, 34b, 35a, 35b are disposed to face each other, and after positioning, pressure is applied thereto. Using an ultrasonic wave treatment device located on the outer surface of the projections 46a, 46b, 46c, 46d, the combination of the two uses the gold ball bumps 55 and the electrodes 34a, 34b, 35a, 35b of the magnetic head 23a. Is applied by applying an ultrasonic wave to the coupling region.

In this case, the electrodes 47a, 47b, 48a, 48b are disposed on the projections 46a, 46b, 46c, 46d in which the elastic members are formed independently of each other. Therefore, even when the size of the gold ball bumps 55 is changed as shown in FIG. 10, the ultrasonic coupling can be performed in a state where a proper pressure is applied to the coupling region by the deformation of the height of each protrusion, and the reliability is high. Combination can be realized.

Next, the liquid resin 56 is dropped on the engaging portion to increase the mechanical bonding strength of the suspension 24a and the magnetic head 23a. (See FIG. 5) In this case, the projections 46a, 46b, 46c, Because of the notches 45 provided to form 46d), the liquid resin can permeate the engaging portion of the suspension 24a and the magnetic head 23a in a suitable manner. The predetermined strengthening by the liquid resin can be made. Depending on the state of use of the read / write head device, it can be done without sealing and reinforcement with the liquid resin.

Also in this embodiment, the fixed position of the magnetic head 23b fixed to the suspension 24a is located only at the end of the slider 31. Therefore, all the sliders are deformed in a convex manner, and the difference between the height of the periphery and the vertex can be made small, so that they are hardly influenced in terms of fluctuations in the height of lift of the head.

Also in this embodiment, the electrodes 47a, 47b, 48a, 48b are disposed on the projections 46a, 46b, 46c, 46d in which the elastic members are formed independently of each other. Therefore, when the magnetic head 23a and the suspension 24a are joined by the ultrasonic coupling technique using the gold ball bumps 55, even if the size of the gold ball bumps 55 is changed, the change of this size is the height of the protrusion. It can be absorbed by the modification of. This allows a stable coupling operation.

12 to 14 show a head device according to a third embodiment of the present invention.

The whole structure of the head apparatus shown in this case is comprised by the suspension 24b and the magnetic head 23b which consist of the head support member which supports the magnetic head 23b in the front-end | tip part.

The magnetic head 23b is formed to have exactly the same structure as the magnetic head of the second embodiment described above. The same parts are given the same reference signs, and repeated descriptions are omitted.

The difference between the magnetic head arrangement between this embodiment and the second embodiment lies in the form of the tip 44 with the engaging surface 43 formed on the suspension 24b.

In the magnetic head device according to the second embodiment, the tip 44 is provided with three notches, and three notches constitute four independent protrusions, and each electrode is provided with these protrusions. However, in this embodiment, in place of the notch, three slots 57 are provided, four separators 58a, 58b, 58c, 58d are provided and substantially elastic due to the presence of these slots 57. Separated in a deformable manner, the electrodes 47a, 47b, 48a, 48b are constructed as in the second embodiment provided on the rear end face of the separators 58a, 58b, 58c, 58d.

The magnetic head 23b is electrically and mechanically coupled to the suspension 24b constructed in this way. In particular, the gold ball bumps 55 are formed in the electrodes 47a, 47b, 48a, 48b formed on the separators 58a, 58b, 58c, 58d of the suspension 24b as shown in FIG. The gold ball bumps 55 are bonded with anisotropic conductive adhesive 59 and the electrodes 34a, 34b, 35a, 35b formed on the magnetic head 23b are positioned on the bumps. In this state, the electrodes 47a, 47b, 48a, 48b and the electrodes 34a, 34b, 35a, 35b are coupled by pressure and heat.

FIG. 15 is a process block diagram of the coupling of suspension 24b and magnetic head 23b by a joining technique using gold ball bumps 55 and anisotropic conductive adhesive 59.

First, the gold ball bumps 55 are formed on the electrodes 47a, 47b, 48a, 48b provided on the suspension 24b by a wiring coupling method. Next, the electrodes 47a, 47b, 48a, 48b formed on the suspension 24b and the electrodes 34a, 34b, 35a, 35b provided on the magnetic head 23b face each other and the anisotropic conductive adhesive 59 ) Is applied after application. Next, the electrodes 34a, 34b, 35a, 35b of the magnetic head 23b and the gold ball bumps 55 are joined in this state by being applied by heat and pressure.

In this case, the electrodes 47a, 47b, 48a, 48b are provided on the separators 58a, 58b, 58c, 58d in which the elastic members are independently of each other. Thus, even if the size of the gold ball bumps 55 changes, the coupling can be done with a constant pressure applied in each coupling region due to the deformation of the separator shown in FIG. In this way, the stability of the coupling operation is achieved. Moreover, since the adhesive portion of the anisotropic conductive adhesive is increased by the slots 57, the bonding strength can be strong.

Thus, the same engagement as the head device according to the second embodiment can also be obtained in the head device of this embodiment.

16 shows a head device according to a fourth embodiment of the present invention.

The overall structure of the present head apparatus includes a magnetic head 23c and a suspension 24c constituting a head support member for supporting the magnetic head 23c at its distal end.

The magnetic head 23b, such as the magnetic head described in the second and third embodiments, is constituted by a slider 31 and a thin film forming technique on the rear end surface of the slider 31 to read / write information on the magnetic disk. An element 32 for performing this is included. The element 32 has a recording magnetic pole and a reading magnetic pole, and these magnetic poles are configured to be positioned laterally in contact with the magnetic disk. As described above, the electrodes 34a, 34b, 35a, and 35b for exchanging external signals are arranged on the rear end face of the magnetic head 23c in the state of being exposed to a single magnetic pole at the ratio of two electrodes (electrode ( 34b, 35a, 35b are not shown).

Suspension 24c is configured to display the function of the gimbal and provides a bent portion 60 that is bent at a 90 degree angle at its tip. Engaging surface 61 is provided on the inner surface of the bent portion 60. On the surface on which the engaging surface 61 of the suspension 24c is provided, four wirings (not shown) are formed in an insulating coating state by lithography. In addition, as shown in FIG. 17, the coupling surfaces 61 are provided with the electrodes 62a, 62b, 63a, and 63b in an exposed state, and the relationship thereof is opposed to the electrodes 34a, 34b, 35a, and 35b. The wiring is combined. The other end of the wiring is led to the base end of the suspension 24c along the rear end surface of the suspension 24c.

The magnetic head 23c is electrically and mechanically connected to the formed suspension 24c. In particular, the semi-spherical conductive bumps 64 are provided on one of the electrodes 62a, 62b, 63a, 63b provided on the curved portion 60 or on the electrodes 34a, 34b, 35a, 35b provided on the magnetic head 23c. Is provided. The bent portion 60 and the magnetic head 23c maintain the gap defined by the conductive bumps 64. This gap is filled by the adhesive 65. This adhesive 65 contains fine metal powder and is processed in the vicinity where the hemispherical portion of the conductive bump 64 is in contact with the electrode in contact with it. Thus, even if the adhesive 65 is applied to a plurality of electrodes, conduction is possible only at the contacted electrodes and the substantially insulated state is maintained at the electrodes rather than this.

The adhesive 65 plays an effective role in the mechanical coupling between the bent portion 60 on the suspension 24c and the magnetic head 23c at the same time as the electrical coupling of the suspension 24c and the magnetic head 23c.

Thus, the magnetic head 23c and the suspension 24c are formed only in the element formed in contact with the magnetic head 23c, and the surface in contact with the opposite surface of the floating surface of the magnetic head 23c is not used as the adhesive surface. This makes it possible to prevent fluctuations in the curvature of the floating surface because the environmental temperature changes, and can reduce the floating height of the magnetic head and improve the recording density. In order to apply pressure to the magnetic head 23c, such as pressing the magnetic head 23c on the magnetic disk, it is generally necessary to apply pressure to a surface in contact with the opposite side of the floating surface of the magnetic head 23c at a previous position. Do. If the suspension 24c is configured to engage the rear end face of the magnetic head 23c as described above, an initial deformation is provided at the time of assembly, so that an appropriate initial moment 67 is generated simultaneously with the pressure 66 to substantially reduce the actual pressure. It is possible to set the load action position 68 at the position of the magnetic head,

The head device according to the fifth embodiment of the present invention is shown in FIG.

The overall structure of the presently described head apparatus includes a magnetic head 23d and a suspension 24d constituting a head support member for supporting the magnetic head 23d at its distal end.

Like the magnetic head in the fourth embodiment described above, the magnetic head 23d is provided by the slider 31 and a thin film forming technique at the rear end surface of the slider 31 to read and write information on the magnetic disk. An element 32 is included. The element 32 has a recording magnetic pole and a reading magnetic pole, which magnetic poles are configured to be located on the side facing the magnetic disk. In the rear section of the magnetic head 23d, as described above, the electrodes 34a, 34b, 35a, 35b are provided at a ratio of two electrodes for each magnetic pole in the exposed state to exchange signals with the outside.

Suspension 24d is made of a high strength material having the properties of a spring, such as stainless steel using springs and / or phosphorescent copper. Suspension 24d is formed in the combined form shown in FIGS. 6 and 16. The same parts as in Fig. 6 are denoted by the same reference numerals and repeated descriptions are omitted.

As shown in FIG. 20, the engagement surface 43 is provided on the opposite side of the tip of the suspension 24d. In addition, three notches 45 are formed in the widthwise direction extending from the longitudinal direction of the suspension 24d at the distal end portion on which the engaging surface 43 is formed, and the distal end portion 44 has four resilient protrusions 46a, 46b, and 46c. 46d) is divided into three notches 45. These protrusions 46a, 46b, 46c, 46d were each bent at 90 degrees.

On the opposite side of the projections 46a, 46b, 46c, 46d, electrodes 47a, 47b, 48a, 48b are provided for electrical coupling with the electrodes 34a, 34b, 35a, 35b disposed on the magnetic head 23a. And the corresponding wirings 41a, 41b, 42a, 42b.

The magnetic head 23d is electrically and mechanically coupled to the formed suspension 24d. Particularly in the case of the first embodiment, the electrodes 47a, 47b, 48a, 48b provided in the suspension 24d and the electrodes 34a, 34b, 35a, 35b provided in the magnetic head 23d in this example are shown in Fig. 21. It is coupled by ultrasonic coupling using gold ball bumps as shown.

FIG. 22 is a flow chart of the process steps when the suspension 24d and the magnetic head 23d are joined by ultrasonic bonding techniques using gold ball bumps.

First, the gold ball bumps 55 are formed by the wiring coupling method on the electrodes 34a, 34b, 35a, 35b provided on the magnetic head 23d. Next, the electrodes 47a, 47b, 48a, 48b provided on the suspension 24d are contacted with the electrodes 34a, 34b, 35a, 35b provided on the magnetic head 23d. The gold ball bumps 55 and the electrodes 47a, 47b, 48a, and 48b are joined to each of the protrusions on the rear surface of the protrusions 46a, 46b, 46c, and 46d by applying ultrasonic waves using an ultrasonic wave treatment device.

In this case, the electrodes 47a, 47b, 48a, 48b are provided in the projections 46a, 46b, 46c, 46d, in which the elastic members are independently configured. As a result, even if the size of the gold ball bumps 55 changes, the ultrasonic coupling can perform a constant pressure applied to the coupling portion because of the deformation of the height of the protrusion, so that a reliable connection can be executed.

Also in this embodiment, the fixed position of the magnetic head 23d attached to the suspension 24d is located only at the end of the magnetic head 23d. The change in curvature of the floating surface can be prevented due to the change in environmental temperature, and the reduction of the floating height and the density of the recording can be improved.

23 and 24 show a head device according to a sixth embodiment of the present invention.

The entire structure of the head device described in this case is composed of a magnetic head 23e and a suspension 24e constituting a head support member for supporting the magnetic head 23e at its distal end.

As in the case of the magnetic head in the fifth embodiment, the magnetic head 23e is constituted by a thin film forming technique on the slider 31 and the rear end surface of the slider 31 to read and write information on the magnetic disk. The element 32 is comprised. The element 32 is configured to be located on the side facing the magnetic disk with only one magnetic pole for reading and writing. On the rear end face of the magnetic head 23a, electrodes 34a and 34b are provided in an exposed state for signal exchange with the outside.

The suspension 24e is composed of a spring-strength high-strength material such as phosphorescent copper or stainless steel using a spring. The suspension 24e is made into a shape manufactured by combining the shape shown in FIG. 20 with the shape shown in FIG. 6.

In particular, the tip portion 71 of the suspension 24e is bent at 90 degrees and the protrusions 72a and 72b are formed to occupy a wider area than the electrodes 34a and 34b at the tip portion 71 mentioned above. Engaging surface 73 is provided on the rear surface of the tip portion (71). On the front surface of the projections 72a and 72b, electrodes 73a and 73b are provided as in the embodiment described above. These electrodes 73a and 73b are coupled to the wirings 74a and 74b provided on the outer surface of the suspension 24e as in the embodiment described above.

The magnetic head 23e is electrically and mechanically coupled to the formed suspension 24e. In particular, the magnetic head 23e is fixed by adhesive to the rear surface of the magnetic head and the rear surface of the projections 72a and 72b in a position away from the electrodes 34a and 34b. The electrodes 34a and 34b provided on the magnetic head 23e are coupled to the electrodes 73a and 73b provided to the suspension 24e via the lead wire 76.

Therefore, according to the above configuration, the magnetic head 23e and the suspension 24e are coupled only to the surface in contact with the magnetic head 23e on which the element is formed. As a result, the fluctuation of the curvature of the floating surface due to the change of the environmental temperature can be prevented, so that the floating height can be reduced and the recording density can be improved.

Claims (16)

A read / write head device for reading information from a recording medium and recording the information on the recording medium, A head comprising a slider and elements coupled to the slider for reading and / or writing information on the recording medium; And a head support member mechanically coupled to the head only at one end of the head. 2. The read / write head device of claim 1, wherein the head support member is coupled to the head only on the surface of the device. The read / write head device as claimed in claim 2, further comprising a wiring integrally formed with the head support member and electrically connected to the surface of the element. 4. The read / write head device as claimed in claim 3, wherein the head has a protruding portion in the vicinity of an arrangement area of the element on a surface opposite to a surface located on the side of the recording medium. A read / write head device for reading information from a recording medium and recording the information on the recording medium, A head comprising a slider and elements coupled to the slider for reading and / or writing information on the recording medium; A first electrode mounted on the head and electrically coupled with the element; A head support member mechanically coupled to the head only on the surface of the device; A second electrode mounted on the head support member and electrically coupled to the first electrode; And wires integrally formed with said head support member and electrically connected to said element. 6. The read / write head device of claim 5, wherein the first electrode is disposed at a rear end of the head, and the head support member includes a curved surface portion. 6. The read / write head device of claim 5, wherein the head support member has an elastic support structure for elastically supporting the second electrode independently. 8. The read / write head device of claim 7, wherein the resilient support structure is formed by a notch or a hole. 6. A read / write head device as claimed in claim 5, wherein said head support member provides a gimbal function for mating said head on a recording medium. An information recording apparatus for reading and / or recording information on a recording medium, comprising: A head including a slider and an element coupled to the slider for recording and / or reproducing information on the recording medium; A head support member mechanically coupled to the head at a surface in contact with the element; And a support arm coupled to the head support member for moving the head to both ends of the recording medium. The information recording apparatus according to claim 10, further comprising a wiring integrally formed with said head support member and electrically connected to said element. 12. The information recording apparatus as claimed in claim 11, wherein the head has a protruding portion in the vicinity of an arrangement area of the element on a surface located on a side opposite to a surface located on a side of the recording medium. An information recording apparatus for recording and reproducing information on a recording medium, A head including a slider and elements coupled to the slider for reading and / or writing information on the recording medium; A first electrode mounted on the head and electrically coupled to the element; A head support member mechanically coupled to the head only on the surface of the device; A support arm coupled to the head support member to move the head to both ends of the recording medium; A second electrode provided on the head support member and electrically coupled to the first electrode; And a wire formed coincident with the head support member and electrically connected to the element. A head having a first end and a second end; An element for reading and / or writing information at the first end of the head; And a head support connected to only the head at the first end of the head such that the head is movable to the head support. The read / write head device according to claim 14, further comprising a wiring connected between the head support and the element. 16. The read / write head device of claim 15, wherein the wiring comprises four gold balls.