JPS63155420A - Magnetic head - Google Patents

Abstract

PURPOSE:To form or place an electromagnetic converting element and a recording and reproducing integrate circuit on the same slider without complicating a forming process, by making separately a substrate on which an electromagnetic converting element is formed and a substrate on which a recording and reproducing integrate circuit is formed, and thereafter, making a slider by sticking each substrate. CONSTITUTION:An electromagnetic converting element 3 and a recording and reproducing integrated circuit 4 are made separately on a stabilized zirconia substrate, and a silicon substrate, respectively. On one substrate, many blocks 1, 2 containing the electromagnetic converting element 3 or the recording and reproducing circuit 4 are placed and formed, and the welded blocks 1, 2 are worked to a slider. Subsequently, the electromagnetic converting element 3 and the recording and reproducing circuit 4 are connected with a metallic wire 7 by a wire bonding method. In such a way, the necessity for using a complicated forming process for making the electromagnetic converting element 3 and the recording and reproducing integrated circuit 4 on the same substrate can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head used in a magnetic storage device, and more particularly, to a magnetic head suitable for easily forming a slider including an electromagnetic transducer and a recording/reproducing circuit. .

[Conventional technology]

A magnetic head in a conventional magnetic storage device includes an electromagnetic transducer using a substrate serving as a slider, or formed on a substrate, and a recording/reproducing circuit for the electromagnetic transducer on a support of a floating mechanism including a slider and a gimbal. It is arranged. Also,
For the purpose of reducing the signal-to-noise ratio due to external noise and downsizing the recording/reproducing system, a magnetic head in which a thin film head and a recording/reproducing circuit were formed on the same slider was published in JP-A-58-118016.
has been disclosed. However, in the disclosed example, the thin film head and the recording/reproducing circuit are formed on the same substrate.

[Problem that the invention seeks to solve]

In the disclosed example, no consideration was given to the difference in the formation process of the thin film head and the recording/reproducing circuit, and there was a problem that the process became complicated. Furthermore, there is a problem in that it is difficult to use substrates suitable for each thin film head and recording/reproducing circuit in order to obtain desired characteristics.

# The process of creating a transducer element made using film formation technology involves forming a stepped portion of approximately 10 μm in the desired shape with organic resin, and adding magnetic material with the desired magnetic properties to the stepped portion. It involves the process of forming a thin film. The shape of the step is greatly influenced by the temperature conditions after the formation process. Furthermore, the magnetic properties of the magnetic thin film also change depending on the temperature conditions after formation and the substrate. For this reason, in the conventional four-film head process, a substrate is selected that does not adversely affect the above-mentioned magnetic properties, and the temperature conditions for each process are set so as not to exceed t-400C.

On the other hand, KumeK, which forms integrated circuits as recording and reproducing circuits,
1. Usually a silicon substrate is used. This is because a semiconductor layer is required, but it is not suitable as a substrate for forming a magnetic thin film because of the large difference in coefficient of thermal expansion. Further, the semiconductor layer formation process requires temperature conditions of around 100°C. This temperature changes the shape of the stepped portion of the thin film head and deteriorates the magnetic properties of the magnetic thin film.

As described above, the electromagnetic conversion element formation process and the integrated circuit formation process require substrates and processes with different characteristics. Therefore, creating an electromagnetic conversion element and a recording/reproducing circuit on the same substrate requires a more complicated process than creating the above-mentioned element and circuit separately.

The purpose of the present invention is to, without complicating the formation process,
An object of the present invention is to provide a magnetic head in which an electromagnetic transducer and a recording/reproducing integrated circuit are formed or arranged on the same slider.

[Means for solving problems]

The above purpose is 1! This is achieved by separately manufacturing a substrate on which a magnetic transducer is formed and a substrate on which a recording/reproducing integrated circuit is formed, and then bonding each substrate to form a slider.

[Effect]

By separately producing the electromagnetic transducer element and the recording/reproducing integrated circuit as in the present invention, it is possible to select a forming process and substrate suitable for forming each element and circuit, which makes the forming process complicated. There will be no need.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. An electromagnetic transducer was fabricated on a stabilized zirconia substrate, and an integrated circuit for recording and reproduction was fabricated on a silicon substrate. The magnetic thin film used for the electromagnetic transducer is permalloy. One board has approximately 60 blocks each containing 5 elements 3 or circuits 4.
A block arrangement was formed. A rectangular parallelepiped block 1.2 loaded with five elements 3 or circuits 4 is cut from this substrate,
Glass 5 was heat-fused between the blocks (Figure 2).

Thereafter, the fused block was cut along the slider cutting line 6 and processed into a syslider by one machining process.

Next, the element 3 and the circuit 4 were connected using a gold wire 7 by wire bonding.

〔Effect of the invention〕

According to the present invention, an electromagnetic transducer element and an integrated circuit for recording/reproduction can be created on the same substrate by adding means for gluing blocks forming elements and circuits and means for electrically connecting each. The need to use a forming process can be eliminated. Here, in the above embodiment, the blocks were bonded together using a method using glass, but it is clear that the objects of the present invention can also be achieved by bonding blocks using other methods such as using resin. .

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of a magnetic helide slider showing an embodiment of the present invention, and FIG. 2 is a plan view of the slider shown in FIG. 1 during manufacture. DESCRIPTION OF SYMBOLS 1... Electromagnetic conversion element block, 2... Integrated circuit block for recording and reproduction, 2... Electromagnetic conversion element, 4... Integrated circuit for recording and reproduction, 5... Glass, 6... Slider cutting line.

Claims (1)

[Claims] 1. In a magnetic head in which an electromagnetic transducer and a recording/reproducing circuit for the electromagnetic transducer are formed or arranged in a part of the slider, a substrate on which the electromagnetic transducer is formed or arranged;
A magnetic head characterized in that a slider is formed by bonding a substrate on which a recording/reproducing circuit for an electromagnetic conversion element is formed or arranged.