JPS61160815A - Floating type thin film magnetic head - Google Patents

Abstract

PURPOSE:To attain the wiring with high accuracy by fixing a part of the tip of a flexible printed wiring board to the side face of a slider and connecting the connection terminals exposed at the tip of the wiring board to the terminals of a conductor coil with thin connection lines. CONSTITUTION:A slider A contains air bearing surfaces 1 and 2 at its both sides and a thin film magnetic head B unified to the side faces of surfaces 1 and 2. The head B contains a conductor coil 3 consisting of a lower magnetic layer of a ferromagnetic material, a magnetic gap part of a nonmagnetic material and a conductor layer of a conductive material, an upper magnetic layer 6 of a ferromagnetic material, etc. formed on the side face of the slider A by an existing film forming process. A flexible printed wiring board D is obtained by applying a prescribed printed wiring pattern to a substrate 11 of polyimide resin, etc. Then the connection terminals 12 and 13 exposed at the tip Da of the board D are connected to terminals 4 and 5 of the coil 3 via thin connection lines 9 and 10 respectively.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a method for recording information on the recording medium surface during recording of information signals on a recording medium (hard disk) and during reproduction of information signals from the recording medium. The present invention relates to a floating thin film magnetic head that is used while floating at a minute distance.

(Prior Art) During the operation of recording information signals on a recording medium with a hard recording medium surface (for example, a so-called hard disk) and during the operation of reproducing information signals from the recording medium.

It is equipped with a thin film magnetic head integrally constructed with a slider having an air bearing surface so as to be used while floating at a minute distance from the surface of the recording medium, and a support body is attached to the slider. A floating type thin film magnetic head constructed in such a manner that a floating type thin film magnetic head is attached has been known in the past, and FIG. 5 shows an example of the configuration of a conventional floating type thin film magnetic head.

In FIG. 5, A is a slider, B is a thin film magnetic head,
C is a support, and slider A has air on both sides of it.
Bearing Surf Ace (ABS) 1.

2, and a thin film magnetic head B is integrally formed on the side surface thereof.

In Fig. 5, la and 2a are the introduction parts of the air bearing surfaces 1 and 2 (the part facing a new part of the recording medium during relative movement between the recording medium and the magnetic head). The slider A supported by the support C and the slider A supported by the air layer introduced between the air bearing surface and the recording medium by the inflow of air from this introduction part. The film magnetic head B, which is constructed as shown in FIG.

The thin film magnetic head B, which is integrally formed on the side surface of the slider A, has a lower magnetic layer made of a ferromagnetic material, a magnetic gap made of a non-magnetic material, and a conductive layer made of a conductive material on the side surface of the slider A. A conductor coil 3 made of ferromagnetic material, an upper magnetic layer 6 made of a ferromagnetic material, etc. are sequentially provided using a well-known film forming technique. is the terminal of conductor coil 3.

7.8 is a connecting line.

(Problems to be Solved by the Invention) Now, in the floating type thin film magnetic head, since the thin film magnetic head B has an extremely small size, it has conventionally been connected to the terminal 4°5 of the conductor coil 3. Gold wire or copper wire with a diameter of several tens of microns to several hundred microns is used as the connecting wire, and the connecting wire is bonded by ultrasonic bonding.
Alternatively, it was connected to the terminals 4 and 5 of the conductor coil by soldering, and the connecting wire was connected to the system main body via the support C as it was.

By the way, two or more wires 7 and 8 are usually used as connection wires to be connected to the coil of a thin-film magnetic head, but the wires (connection wires) that are bonded with conventional wire bonding equipment does not have an insulating coating, so in order to use the connecting wire as the connecting wire 7, 8 from the terminals 4, 5 of the conductor coil to the main body of the system, the wire must be coated by some means. In the case where it is necessary to apply an insulating coating, and the wires 7 and 8 are used, which are originally coated with an insulating coating.

In addition to the need to remove the covering of the connection wires 7 and 8 at the portions that connect to the terminals 4 and 5 of the conductor coil, soldering work at two or more locations is required for connection, etc.
The problem was that it was not possible to perform wiring work with high precision and efficiency.

(Means for Solving the Problems) The present invention provides a method for recording an information signal onto a recording medium;
A thin film integrally constructed with a slider having an air bearing surface so that it is used while floating at a small distance from the surface of the recording medium during reproduction of information signals from the recording medium. Equipped with a magnetic head,
In the floating type thin film magnetic head configured such that a support is attached to the slider described above, there is a flexible structure on the side surface of the slider near the terminals of the four-piece coil of the thin film magnetic head configured on the slider described above. Also, fix a part of the tip of the printed wiring board.

The connecting terminal exposed at the tip of the flexible printed wiring board and the terminal of the conductor coil are connected by a thin connecting wire, and the connecting point between the slider and the support body is connected. A floating thin film magnetic head is provided, in which a flexible printed wiring board is provided with a flexible portion in the vicinity thereof, and the flexible printed wiring board is disposed along a support. It is something to do.

(Example) Hereinafter, specific details of the floating thin film magnetic head of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of the floating thin film magnetic head of the present invention as seen from the bottom side.

FIG. 2 is a perspective view of the floating thin film magnetic head of the present invention viewed from above, FIG. 3 is a plan view of the flexible printed wiring board, and FIG. 4 is a side view of the flexible printed wiring board. be.

In the floating thin film magnetic head of the present invention shown in FIGS. 1 and 2, the components corresponding to those of the conventional floating thin film magnetic head already described with reference to FIG. The same drawing numerals as those used in FIG. 5 are used.

1 and 2, A is a slider, B is a thin film magnetic head, C is a support, and D is a flexible printed circuit board. Slider A has air bearing surfaces (ABS) on both sides of it. ) 1.2, and a thin film magnetic head B is integrally formed on the side surface thereof.

In Fig. 1, la and 2a are the introduction parts of the air bearing surfaces 1 and 2 (the part facing a new part of the recording medium during relative movement between the recording medium and the magnetic head). The slider A supported by the support C and the slider A supported by the air layer introduced between the air bearing surface and the recording medium by the inflow of air from this introduction part. The thin film magnetic head B configured as shown in FIG.

The thin film magnetic head B, which is integrally formed on the side surface of the slider A, has a lower magnetic layer made of a ferromagnetic material, a magnetic gap made of a non-magnetic material, and a conductive layer made of a conductive material on the side surface of the slider A. A conductor coil 3 made of a ferromagnetic material, an upper magnetic layer 6 made of a ferromagnetic material, etc. are sequentially provided using a well-known film forming technique.

A flexible printed wiring board is a flexible printed circuit board 1 made of a flexible insulator, such as a polyimide resin board 11, with a predetermined printing process. A plan view of an example of this is shown in FIG. 3, and a side view is shown in FIG. 4.

The flexible printed wiring board has a distal end Da and a proximal end D.
A wiring pattern made of a conductive material, such as copper, is exposed and serves as a connection portion. Reference numerals 12, 13, 14, 15, etc. in FIG. 3 indicate connecting portions provided at the distal end Da and the proximal end Db of the flexible printed wiring board, respectively.

The flexible printed wiring board has a part of its tip Da on the side surface of the slider A in the vicinity of the terminals 4 and 5 of the conductor coil 3 of the thin film magnetic head configured on the slider A, for example. It is fixed using adhesive, and
Connecting terminals 12, 13 and terminals 4 of the conductor coil 3 provided exposed at the tip Da of the flexible printed wiring board,
For example, a flexible printed wiring/board board is provided with a flexible portion Dc in the vicinity of the connection point between the slider A and the support C; The flexible printed wiring board is disposed along the support C.

(Effects) In the floating thin film magnetic head of the present invention configured as described above, there is a flexible structure on the side surface of the slider in the vicinity of the terminal 4.5 of the conductor coil 3 of the thin film magnetic head configured on the slider A. A part of the tip Da of the flexible printed wiring board is fixed, and the connection terminals 12 and 13 provided exposed on the tip Da of the flexible printed wiring board and the conductor coil 3 are connected to each other. A thin connecting wire is used to connect the terminals, and a flexible portion D is connected to the flexible printed wiring board in the vicinity of the connection point between the slider A and the support C.
c, and furthermore, the above-mentioned flexible printed wiring board is arranged along the support C. According to the floating thin film magnetic head of the present invention, see FIG. The problems with the conventional floating thin film magnetic head described above can be satisfactorily solved.

That is, in the floating film magnetic head of the present invention.

Terminal 4 of the conductor coil provided on the side of slider A
, 5 to the main body of the system are made of flexible printed wiring boards, and the terminals 4 and 5 of the conductor coil provided on the side of slider A are connected to flexible printed wiring boards. The connection to the connecting portions 12 and 13 on the printed wiring board is made using a flexible printed wiring whose tip portion Da is partially fixed to the side surface of the slider in the vicinity of the terminals 4 and 5 of the conductor coil 3 of the thin film magnetic head. It is only necessary to connect a short section between the connecting terminals 12 and 13 exposed at the tip Da of the substrate with a thin connecting wire by bonding. The presence of the flexible portion Da provided on the flexible printed wiring board in the vicinity of the connection point causes the slider A to be
Since the slider can be freely moved up and down, there is no problem in the up and down movement of the slider even when a flexible printed wiring board is used.

Therefore, according to the floating thin film magnetic head of the present invention, wiring between the terminal of the conductor coil in the thin film magnetic head and the system main body can be performed with high precision and efficiency.

[Brief explanation of drawings]

1 and 2 are perspective views of a floating thin film magnetic head of the present invention, FIG. 3 is a plan view of a flexible printed wiring board, FIG. 4 is a side view of the flexible printed wiring board, and FIG. The figure is a perspective view of a conventional floating type film magnetic head. A...Slider, B...Thin film magnetic head, C...
Support body, D...flexible printed wiring board, Da...tip end of flexible printed wiring board, Db...base end of flexible printed wiring board, Dc...flexible Flexible part of printed wiring board. 1.2... Air Bearing Surf Eighth (ABS)
).

Claims (1)

[Claims] Air bearing surface A floating thin film magnetic head is provided with a thin film magnetic head integrally constructed with a slider having a structure, and a support is attached to the slider described above. A part of the tip of a flexible printed wiring board is fixed to the side surface of the slider in the vicinity of the terminal of the conductor coil of the thin film magnetic head, and a part of the tip of the flexible printed wiring board is provided exposed at the tip of the flexible printed wiring board. The connection terminal and the terminal of the conductor coil are connected by a thin connection wire, and a flexible portion is attached to the flexible printed wiring board in the vicinity of the connection point between the slider and the support body. and furthermore,
A floating thin film magnetic head comprising the flexible printed wiring board described above arranged along a support.