JPH1064014A - Thin film magnetic head device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily determine the position of the bonding point of a lead wire without changing a terminal size by forming the surface attaching an electromagnetic converting element in one end surface of a slider into an inclined surface. SOLUTION: One end surface of the slider 1 is formed to be an inclined surface. And one end surface of the slider 1 forming the inclined surface is provided with the electromagnetic converting element 2, a protecting film 3 protecting the electromagnetic converting element 2 and terminal electrodes 4 separately connected to both end part of the coil part in the electromagnetic converting element 2. Here, the inclined surface of the surface attaching the electromagnetic converting element 2 of the slider 1 is formed by setting the angle forming with the floating surface opposing to a magnetic recording medium into an acute angle. In this case, when the angle formed with the inclined surface and the floating surface of the slider 1 is specified to be θ, since the ratio of the thickness is decided with sinθ, this device is surely thinned down compared with the case not forming the inclined surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin-film magnetic head device, and more particularly to a thin-film magnetic head device having an electromagnetic transducer on an end surface of a slider having a flying surface.

[0002]

2. Description of the Related Art In recent years, the slider size has tended to be further reduced in order to increase the density and speed of magnetic recording. This means that when miniaturized, it becomes possible to obtain a low flying height state required for high-density magnetic recording,
Further, in combination with the gimbal, it effectively works to reduce crash accidents, and furthermore, the air resistance is reduced, so that the seek movement can be sped up.

[0003]

However, when the slider is reduced in size in the above conventional example, the size of the terminal connected to the electromagnetic transducer becomes smaller than in the prior art.
There is an inconvenience that the positioning of the bonding point between the terminal and the lead wire becomes difficult.

Further, as a known example corresponding to the miniaturization of the slider, there is one disclosed in Japanese Patent Application Laid-Open No. 02-252112 in which terminals are arranged on the side surfaces of the slider. However, the terminal in this case cannot be sufficiently secured due to the limitation of the thickness of the protective film protecting the electromagnetic transducer, and as a result, much labor is required to increase the accuracy of lead wire bonding. There was such an inconvenience.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to improve the disadvantages of the prior art, and in particular to reduce the thickness of the slider without changing the electrode size of the conventional terminal and to facilitate the positioning of the bonding point between the terminal and the lead wire. It is an object of the present invention to provide a miniaturized thin-film magnetic head device that can be manufactured in a compact manner.

[0006]

According to a first aspect of the present invention, there is provided a thin-film magnetic head device having a slider having an air bearing surface and an electromagnetic transducer mounted on an end surface of the slider. A surface on one end surface of the slider to which the above-described electromagnetic transducer is attached is defined as an inclined surface,
The configuration is adopted.

Therefore, according to the first aspect of the present invention,
When the area of the inclined surface is set to be the same as that of the end surface of the conventional example, the thickness of the entire slider at that time can be surely reduced as compared with the case where the inclined surface is not used. For this reason,
Even if the thickness of the slider is reduced with the miniaturization of the slider, the conventional terminal size is maintained, so that the positioning of the bonding point of the lead wire can be easily performed as in the conventional example. I have.

According to the present invention, the angle of the inclined surface of the slider on which the electromagnetic transducer is provided is set to an acute angle with respect to the air bearing surface facing the magnetic recording medium. ing.

Therefore, in the invention according to claim 2,
It functions equivalently to the above-described invention of claim 1. For example, in this case, the angle between the inclined surface and the flying surface of the slider is θ
(See FIG. 2), since the thickness ratio is determined by “sin θ”, the thickness can be reliably reduced as compared with the case where no inclined surface is provided. In addition, there is an advantage that processing is easy as shown in FIG.

According to the third aspect of the present invention, the inclined surface of the slider to which the electromagnetic transducer is attached has an angle of 45 ° ± 5 ° between the magnetic recording medium and the air bearing surface facing the magnetic recording medium. , Is adopted. Therefore, according to the third aspect of the invention, in addition to functioning equivalently to the first aspect of the invention, the slider can be formed to have a thickness of, for example, about "1 / 1.4". Can be reduced by about 30%.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG.
Denotes a slider for a magnetic head. The slider 1 has an inclined surface at one end. An electromagnetic transducer 2 is provided on one end surface of the slider 1 forming the inclined surface.
A protection film 3 for protecting the electromagnetic transducer 2 and terminal electrodes 4 and 4 individually connected to both ends of the coil portion of the electromagnetic transducer 2 are provided.

Here, the inclined surface of the surface of the slider 1 on which the above-mentioned electromagnetic transducer 2 is provided is formed by setting the angle between the slider 1 and the air bearing surface facing the magnetic recording medium at an acute angle. In this case, assuming that the angle between the inclined surface and the flying surface of the slider 1 is θ (see FIG. 2), the thickness ratio is “si
nθ ”, the thickness can be reliably reduced as compared with the case where the surface is not inclined.

Specifically, the angle of the inclined surface on which the electromagnetic transducer is provided is set to, for example, “45 ° ± 5 °” with respect to the air bearing surface facing the magnetic recording medium. In this case, if θ = 45 °, the thickness of the slider 1 can be reduced by about 30% compared to the conventional example (the case where the end face is perpendicular to the slider flying surface).

FIG. 2 is an explanatory view in the case of processing from a wafer to a low (RoW) state. In this case, in the conventional example, the blade is set at a right angle to the surface on which the electromagnetic transducer and the terminal electrode are formed, and the wafer is cut into a RoW state. The angle between the surface on which the element 2 and the terminal electrodes 4 and 4 are formed and the floating surface facing the magnetic recording medium are set to an acute angle, for example, θ = 45 ° as described above, and cut into a RoW state. .

FIG. 3 is a side view of the cut-out RoW, and FIGS. 3A and 3B are side views of the cut-out RoW. In FIG. In FIG. 3C, a partial inclined surface (tapered portion) 6 is provided on the upstream side of the air bearing surface, and finally formed in a chip shape as shown in FIG. .

As described above, in the present embodiment, when a wafer manufactured by the same process as the conventional process is cut into a RoW state, the angle of the blade is changed as shown by a dotted line in FIG. The thickness of the slider can be reduced to reduce the size.

At the same time, even if the slider is made thinner and smaller, the mounting surface of the electromagnetic transducer 2 and the terminal electrodes 4 and 4 can have the same mounting area as that of the conventional example. Without changing the size
It is possible to obtain a thin-film magnetic head that can easily position the bonding points of the lead wires.

[0018]

The present invention is constructed and functions as described above. According to this, even if the slider is thinned and downsized, the mounting surfaces of the electromagnetic transducer and the terminal electrode are the same as those of the conventional example. It is possible to secure an area, and therefore, it is possible to provide an unprecedented excellent thin-film magnetic head device in which the position of the bonding point of the lead wire can be easily determined without changing the terminal size. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing a process when a slider portion of the thin-film magnetic head in FIG. 1 is cut out from a wafer.

3A and 3B are views showing a process of processing a slider portion cut out in FIG. 2; FIG. 3A shows a state immediately after cutting out; FIG. 3B shows a case where a rail portion is formed;
(C) is an explanatory view showing a case where a partially inclined surface (tapered portion) is further provided on the tip end side of the formed rail portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slider 2 Protective film 3 Electromagnetic transducer 4 Terminal electrode 5 Rail part 6 Partially inclined surface (taper part)

Claims (3)

[Claims] 1. A thin-film magnetic head device having a slider having a floating surface and an electromagnetic transducer mounted on an end face of the slider, wherein a surface of the slider to which the electromagnetic transducer is attached is an inclined surface. A thin film magnetic head device characterized by the above-mentioned. 2. The slider according to claim 1, wherein an inclined surface of the slider on which the electromagnetic transducer is provided has an acute angle with a floating surface facing a magnetic recording medium. Thin film magnetic head device. 3. An inclined surface of the slider to which the electromagnetic transducer is attached has an angle of 45 ° ± 5 ° with respect to a floating surface facing a magnetic recording medium. The thin-film magnetic head device according to the above.