JPH0822608A - Magnetic head and its production - Google Patents

Magnetic head and its production

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Publication number
JPH0822608A
JPH0822608A JP15372594A JP15372594A JPH0822608A JP H0822608 A JPH0822608 A JP H0822608A JP 15372594 A JP15372594 A JP 15372594A JP 15372594 A JP15372594 A JP 15372594A JP H0822608 A JPH0822608 A JP H0822608A
Authority
JP
Japan
Prior art keywords
thin film
magnetic thin
magnetic head
magnetic
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15372594A
Other languages
Japanese (ja)
Other versions
JP3135021B2 (en
Inventor
Koji Otsuka
光司 大塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP06153725A priority Critical patent/JP3135021B2/en
Publication of JPH0822608A publication Critical patent/JPH0822608A/en
Application granted granted Critical
Publication of JP3135021B2 publication Critical patent/JP3135021B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Magnetic Heads (AREA)

Abstract

PURPOSE:To prevent the cracking of insulating layers and the breaking and short-circuit of winding and to improve reliability. CONSTITUTION:Continuous grooves 2 each having a nearly V-shaped crass section shape are formed on a substrate 1 and a magnetic thin film 3 is formed on the surfaces of the grooves 2. This magnetic thin film 3 has a laminated structure having a prescribed thickness obtd. by alternately forming soft magnetic thin films and interlaminar insulating films. Low m.p. glass 4 is filled into the grooves 2 and a thin film coil 6 is formed on the resultant core block. A thin film coil 9 is further formed on the coil 6 intervening an insulating layer 7 and a gap layer 13 is formed on the coil 9 intervening an insulating layer 10. A magnetic thin film 14 is then formed on the gap layer 13.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、磁気ヘッド及びその製
造方法に関し、より詳細には、磁気記録媒体に情報の記
録又は再生を行う磁気ヘッドをフォトリソ工程などの微
細加工技術により製造する磁気ヘッド及びその製造方法
に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head and a method for manufacturing the same, and more particularly to a magnetic head for manufacturing a magnetic head for recording or reproducing information on a magnetic recording medium by a microfabrication technique such as a photolithography process. And a manufacturing method thereof.

【0002】[0002]

【従来の技術】強磁性薄膜をフォトリソグラフィなどの
微細加工技術を用いて加工して得られる磁気ヘッドは、
従来の強磁性体バルク材料を加工して得られる磁気ヘッ
ドと比較して、狭トラック化や狭ギャップ化が容易であ
るために、高密度磁気記録装置の記録用又は再生用ヘッ
ドに適している。また、多素子化が容易なことから、マ
ルチチャンネル型PCM(Pulse Code Modulation:パ
ルス符号変調)録音機や、ビデオテープレコーダ用の磁
気ヘッドとして有望視されている。
2. Description of the Related Art A magnetic head obtained by processing a ferromagnetic thin film using a fine processing technique such as photolithography is
Compared with a magnetic head obtained by processing a conventional ferromagnetic bulk material, it is easy to narrow the track and narrow the gap, and is therefore suitable for a recording or reproducing head of a high-density magnetic recording device. . In addition, since it is easy to use multiple elements, it is regarded as a promising magnetic head for a multi-channel type PCM (Pulse Code Modulation) recorder and a video tape recorder.

【0003】図10(a)〜(d)〜図11(a),
(b)は、従来の磁気ヘッドの製造工程を示す図で、図
中、31は結晶化ガラス基板、32はV字状の溝、33
は磁性薄膜、34は低融点ガラス、35は絶縁層、36
は第1導電層、37は第2導電層、38はフロントギャ
ップ部、39はバックコア部である。
10 (a)-(d) -FIG. 11 (a),
(B) is a figure which shows the manufacturing process of the conventional magnetic head, 31 is a crystallized glass substrate, 32 is a V-shaped groove, 33 is a figure.
Is a magnetic thin film, 34 is a low melting point glass, 35 is an insulating layer, 36
Is a first conductive layer, 37 is a second conductive layer, 38 is a front gap portion, and 39 is a back core portion.

【0004】精度1000程度のブレードを用いたダイシン
グ加工によって、図10(a)に示すように、結晶化ガ
ラス基板31に断面形状が略V字状の連続した溝32を
形成した後、図10(b)に示すように、これら溝32
の表面に真空蒸着又はスパッタ法等によって、磁性薄膜
33が形成される。その後、図10(c)に示すよう
に、各溝32上に低融点ガラス34が充填され、次い
で、図10(d)に示すように、前記低融点ガラス34
の表面が各溝32の表面側の頂点部に達するまで研磨さ
れ、平面状の研磨面が形成され、片側コアブロックが作
製される。
As shown in FIG. 10 (a), a continuous groove 32 having a substantially V-shaped cross section is formed on the crystallized glass substrate 31 by dicing using a blade having an accuracy of about 1000. As shown in (b), these grooves 32
A magnetic thin film 33 is formed on the surface of the substrate by vacuum deposition or sputtering. After that, as shown in FIG. 10C, each groove 32 is filled with a low melting point glass 34, and then, as shown in FIG. 10D, the low melting point glass 34 is filled.
Is polished until the surface of the groove reaches the apex on the surface side of each groove 32 to form a planar polished surface, and a one-sided core block is manufactured.

【0005】次いで、前記片側コアブロック上の研磨面
に薄膜コイルを形成する。まず、図11(a)に示すよ
うに、スパッタ法等により絶縁層(SiO2等)35を形
成した後、第1導電層(Cu,Al等)36をEB(Elec
tron Beam:電子ビーム)蒸着法等により形成する。前
記第1導電層36を目的の巻線に加工するには、フォト
レジストをマスクに導入ガスArでイオンミーリング装
置を用いる。次いで、図11(b)に示すように、絶縁
層を介して、第2導電層37をパターニング後、フロン
トギャップ部38及びバックコア部39の絶縁層を加工
して、片側コアブロックができる。ペア片側コアブロッ
クは、前記図10(d)において、フロントギャップ部
38及びバックコア部39を残して、他の部分をドライ
プロセス等を利用して加工される。
Next, a thin film coil is formed on the polished surface on the one side core block. First, as shown in FIG. 11A, after forming an insulating layer (SiO 2 or the like) 35 by a sputtering method or the like, a first conductive layer (Cu, Al or the like) 36 is formed on the EB (Elec
tron beam: formed by a vapor deposition method or the like. To process the first conductive layer 36 into a target winding, an ion milling device is used with a photoresist as a mask and an introduced gas Ar. Next, as shown in FIG. 11B, after patterning the second conductive layer 37 via the insulating layer, the insulating layer of the front gap portion 38 and the back core portion 39 is processed to form a one-sided core block. In FIG. 10D, the pair one-side core block is processed by using the dry process or the like while leaving the front gap portion 38 and the back core portion 39.

【0006】図12(a),(b)は、前記工程で作成
された2種類のコアブロックを溶着した構成図で、図
中、31a,31bは結晶化ガラス基板、33a,33
bは磁性薄膜、34a,34bは低融点ガラス、40は
ギャップ部、41,42は絶縁層で、その他、図10及
び図12と同じ作用をする部分は同一の符号を付してい
る。前述した工程により、結晶化ガラス基板31a,3
1bに設けられたV字状の溝32a,32b及び磁性薄
膜33a,33b,薄膜コイル36を有する2種類のコ
アブロックを溶着することにより、磁気ヘッドが完成す
る。なお、図12(a)はテープ摺動面を示した図であ
り、図12(b)は図12(a)のP−P断面図であ
る。
FIGS. 12 (a) and 12 (b) are configuration diagrams in which two types of core blocks prepared in the above process are welded. In the figures, 31a and 31b are crystallized glass substrates, 33a and 33.
b is a magnetic thin film, 34a and 34b are low melting point glass, 40 is a gap part, 41 and 42 are insulating layers, and other parts having the same functions as those in FIGS. Through the above-mentioned steps, the crystallized glass substrates 31a, 3a
A magnetic head is completed by welding two kinds of core blocks having V-shaped grooves 32a and 32b provided in 1b, magnetic thin films 33a and 33b, and a thin film coil 36. 12A is a diagram showing the tape sliding surface, and FIG. 12B is a sectional view taken along line P-P of FIG. 12A.

【0007】[0007]

【発明が解決しようとする課題】前述した方法で作成さ
れる磁気ヘッドにおいては、低融点ガラス上に巻線を形
成する必要があるために、ガラス溶着の温度に耐えるこ
とができず、そのために、絶縁層にクラックが入り、ま
た、巻線の断線及びショートが発生し、出力の低下及び
信頼性に問題があった。
In the magnetic head manufactured by the above-mentioned method, since it is necessary to form the winding on the low melting point glass, it is not possible to withstand the temperature of glass welding. The insulating layer was cracked, and the wire was broken and short-circuited, resulting in a decrease in output and reliability.

【0008】本発明は、このような実情に鑑みてなされ
たもので、絶縁層のクラック及び巻線の断線,ショート
を防止し、信頼性の向上を図るようにした磁気ヘッド及
びその製造方法を提供することを目的としている。
The present invention has been made in view of the above circumstances, and provides a magnetic head and a method of manufacturing the same for preventing cracks in an insulating layer and disconnection or short circuit of a winding to improve reliability. It is intended to be provided.

【0009】[0009]

【課題を解決するための手段】本発明は、上記課題を解
決するために、(1)略V字状の溝2とギャップ層13
に対して傾斜して形成された第1の磁性薄膜3と、薄膜
コイル6,9とギャップ層13に対して平行に形成され
た第2の磁性薄膜14とを具備したこと、更には、
(2)基板の表面に略V字状の複数の溝2を形成し、各
溝2の一方の溝壁面に沿って軟磁性薄膜と層間絶縁膜と
を交互に積層して第1の磁性薄膜3を設け、その後、略
V字状の複数の溝2に低融点ガラス4を充填し、薄膜コ
イル6,9とギャップ層13を形成後、第2の磁性薄膜
14を形成したこと、更には、(3)一方の基板1a上
に磁性薄膜3aと薄膜コイル6,9を設け、もう一方の
基板1b表面に略V字状の溝2と該V字状の溝の壁面に
磁性薄膜3bを設け、該V字状の溝に低融点ガラス4を
モールド後、該基板3b表面の一部を残して物理的に2
種類の加工を施し、前記2つの基板1a,1bを溶着す
ることを特徴としたものである。
According to the present invention, in order to solve the above-mentioned problems, (1) a substantially V-shaped groove 2 and a gap layer 13 are provided.
And a second magnetic thin film 14 formed in parallel with the thin film coils 6 and 9 and the gap layer 13, and further comprising:
(2) A plurality of substantially V-shaped grooves 2 are formed on the surface of a substrate, and a soft magnetic thin film and an interlayer insulating film are alternately laminated along one groove wall surface of each groove 2 to form a first magnetic thin film. 3 is provided, and then the plurality of substantially V-shaped grooves 2 are filled with the low melting point glass 4, the thin-film coils 6 and 9 and the gap layer 13 are formed, and then the second magnetic thin film 14 is formed. (3) The magnetic thin film 3a and the thin-film coils 6 and 9 are provided on one substrate 1a, and the substantially V-shaped groove 2 and the magnetic thin film 3b are formed on the wall surface of the V-shaped groove on the surface of the other substrate 1b. After the low melting point glass 4 is molded in the V-shaped groove, it is physically removed by leaving a part of the surface of the substrate 3b.
It is characterized in that various types of processing are performed and the two substrates 1a and 1b are welded.

【0010】[0010]

【作用】本発明の磁気ヘッドは、略V字状の溝とギャッ
プ層に対して傾斜して形成された一方の磁性層と、薄膜
コイルとギャップ層に対して平行に形成された他方の磁
性層とを有しており、(1)狭トラック幅の磁気ヘッド
を作製するにあたり、ガラス溶着工程がないため、低融
点ガラス上に形成された巻線があっても、絶縁層のクラ
ック及び巻線の断線,ショートを防止することができ、
信頼性及び歩留の向上並びに出力低下の防止を図ること
ができる。また、(2)狭トラック幅の磁気ヘッドを作
製するにあたり、巻線の下部に低融点ガラスがないため
に、ガラス溶着しても絶縁層のクラック及び巻線の断線
やショートを防止することができ、信頼性及び歩留の向
上並びに出力低下の防止を図れる。また、(3)巻線を
形成していないペアブロックを2種類の物理加工を施し
ているので、コア間の距離を大きくすることができ、そ
のために、磁束のもれが減少し出力の向上が図れる。
According to the magnetic head of the present invention, one magnetic layer is formed so as to be inclined with respect to the substantially V-shaped groove and the gap layer, and the other magnetic layer is formed in parallel with the thin film coil and the gap layer. (1) When manufacturing a magnetic head with a narrow track width, there is no glass welding step, so even if there is a winding formed on the low melting point glass, cracks and winding of the insulating layer It can prevent wire disconnection and short circuit,
It is possible to improve reliability and yield and prevent output from decreasing. (2) In manufacturing a magnetic head having a narrow track width, since there is no low melting point glass under the winding, cracking of the insulating layer and disconnection or short circuit of the winding can be prevented even if glass is welded. As a result, reliability and yield can be improved, and output reduction can be prevented. In addition, (3) the pair blocks without windings are subjected to two types of physical processing, so that the distance between the cores can be increased, which reduces leakage of magnetic flux and improves output. Can be achieved.

【0011】[0011]

【実施例】実施例について、図面を参照して以下に説明
する。図1(a)〜(d)〜図5(a)〜(c)は、本発明
による磁気ヘッド及びその製造方法の一実施例を説明す
るための構成図である。図中、1は基板、2はV字状の
溝、3は磁性薄膜、4は低融点ガラス、5は絶縁層、6
は第1導電層、7は絶縁層、8は絶縁層の一部、9は第
2導電層、10は絶縁層、11はフロントギャップ部、
12はバックコア部、13はギャップ部、14は磁性薄
膜である。
Embodiments will be described below with reference to the drawings. 1A to 1D to 5A to 5C are configuration diagrams for explaining one embodiment of a magnetic head and a method for manufacturing the magnetic head according to the present invention. In the figure, 1 is a substrate, 2 is a V-shaped groove, 3 is a magnetic thin film, 4 is low melting point glass, 5 is an insulating layer, 6
Is a first conductive layer, 7 is an insulating layer, 8 is a part of the insulating layer, 9 is a second conductive layer, 10 is an insulating layer, 11 is a front gap portion,
Reference numeral 12 is a back core portion, 13 is a gap portion, and 14 is a magnetic thin film.

【0012】前述の従来工程と同様に、精度1000程度の
ブレードを用いたダイシング加工によって、図1(a)
に示すように、基板1である結晶化ガラス基板やセラミ
ック基板に断面形状が略V字状の連続した溝2を形成し
た後、これら溝2の表面に真空蒸着やスパッタ法等によ
って、図1(b)に示すように、磁性薄膜3が形成され
る。ここで、磁性薄膜3は、高周波領域での特性改善
(損失改善)のため、軟磁性薄膜(センダスト合金膜,
窒化鉄等)と層間絶縁膜(SiO2,SiO,Al23,S
i34等)とを交互に成膜して所定の膜厚(トラック幅
に相当する寸法)を有する積層構造の磁性薄膜3とな
る。
Similar to the conventional process described above, the dicing process using a blade with an accuracy of about 1000 is performed, as shown in FIG.
As shown in FIG. 1, after a continuous groove 2 having a substantially V-shaped cross section is formed on the crystallized glass substrate or ceramic substrate which is the substrate 1, the surface of the groove 2 is formed by vacuum vapor deposition, sputtering or the like. As shown in (b), the magnetic thin film 3 is formed. Here, the magnetic thin film 3 is a soft magnetic thin film (sendust alloy film,
Iron nitride etc. and interlayer insulation film (SiO 2 , SiO, Al 2 O 3 , S)
i 3 N 4 etc.) are alternately formed to form the magnetic thin film 3 having a laminated structure having a predetermined film thickness (dimension corresponding to the track width).

【0013】その後は、図1(c)に示すように、各溝
2上に低融点ガラス4が充填され、次いで、図1(d)
に示すように、前記低融点ガラス4の表面が各溝2の表
面側の頂点部に達するまで研磨され、平面状の研磨面が
形成されてコアブロックとして作製される。
Thereafter, as shown in FIG. 1 (c), the low melting point glass 4 is filled on each groove 2, and then, as shown in FIG. 1 (d).
As shown in, the surface of the low-melting glass 4 is polished until it reaches the apexes on the surface side of each groove 2, and a flat polished surface is formed to produce a core block.

【0014】次に、前記コアブロック上の研磨面に薄膜
コイルを形成する。まず、図2(a)に示すように、ス
パッタ法等により、絶縁層5(Al23,SiO2,Si
O,Si34等)を形成した後、図2(b)に示すよう
に、EB蒸着法等により第1導電層6(Cu,Al,Al
−Cu等)を形成する。前記第1導電層6を巻線パター
ンに加工するには、図2(b),(c)に示すように、
フォトレジストをマスクにし、導入ガスAr,Ar+O2
等を用い、イオンミーリング装置により加工を施す。な
お、図2(c)は図2(b)のA−A断面図である。次
に、図2(d)に示すように、絶縁層7(SiO2,Si
O,Al23,Si34等)を形成後、平坦化処理を行
う。
Next, a thin film coil is formed on the polished surface of the core block. First, as shown in FIG. 2A, the insulating layer 5 (Al 2 O 3 , SiO 2 , Si) is formed by a sputtering method or the like.
After forming O, Si 3 N 4, etc., as shown in FIG. 2B, the first conductive layer 6 (Cu, Al, Al) is formed by EB vapor deposition or the like.
-Cu, etc.). To process the first conductive layer 6 into a winding pattern, as shown in FIGS. 2 (b) and 2 (c),
Using the photoresist as a mask, introducing gas Ar, Ar + O 2
And the like are processed by an ion milling device. 2C is a sectional view taken along line AA of FIG. Next, as shown in FIG. 2D, the insulating layer 7 (SiO 2 , Si 2
After forming O, Al 2 O 3 , Si 3 N 4, etc., a flattening process is performed.

【0015】次に、第1導電層6と第2導電層9を接続
するために、図3(a),(b)に示すように、絶縁層
7の一部8をフォトレジストをマスクにして、RIE
(リアクティブ・イオン・エッチング)等でエッチング
する。なお、図3(b)は図3(a)のB−B断面図で
ある。次に、図3(c),(d)に示すように、第2導
電層9を第1導電層6と同様な方法で形成し、その後、
図3(e)に示すように、絶縁層10を形成し、平坦化
処理を行う。なお、図3(d)は図3(c)のC−C断
面図である。次に、図4(a),(b)に示すように、
フロントギャップ部11及びバックコア部12の絶縁層
を加工後、図4(c)に示すように、ギャップ部13を
形成する。なお、図4(b)は図4(a)のD−D断面
図である。
Next, in order to connect the first conductive layer 6 and the second conductive layer 9, as shown in FIGS. 3A and 3B, a part 8 of the insulating layer 7 is masked with a photoresist. RIE
Etch with (reactive ion etching) or the like. Note that FIG. 3B is a sectional view taken along line BB of FIG. Next, as shown in FIGS. 3C and 3D, the second conductive layer 9 is formed in the same manner as the first conductive layer 6, and then,
As shown in FIG. 3E, the insulating layer 10 is formed and a planarization process is performed. Note that FIG. 3D is a cross-sectional view taken along the line CC of FIG. Next, as shown in FIGS. 4 (a) and 4 (b),
After processing the insulating layers of the front gap portion 11 and the back core portion 12, the gap portion 13 is formed as shown in FIG. Note that FIG. 4B is a sectional view taken along the line D-D of FIG.

【0016】最後に、上部コアとして、軟磁性薄膜(セ
ンダスト合金膜,窒化鉄等)と絶縁膜(SiO2,Si
O,Al23,Si34等)を交互に成膜して磁性薄膜1
4とする。ここで、磁性薄膜14は全面に形成せず、メ
タルマスク等を用いて巻線部の近傍のみに形成する。そ
の理由は、磁性薄膜を全面に形成すると、図5(a)〜
(c)に示すように、下地絶縁層との選択比(エッチン
グ速度比)から加工が難しく、また、工程が増すためで
ある。なお、図5(b)は図5(a)のE−E断面図、
図5(c)は図5(a)のF−F断面図で、テープ摺動
面の構造である。
Finally, as an upper core, a soft magnetic thin film (Sendust alloy film, iron nitride, etc.) and an insulating film (SiO 2 , Si) are used.
O, Al 2 O 3 , Si 3 N 4, etc. are alternately formed to form a magnetic thin film 1.
Set to 4. Here, the magnetic thin film 14 is not formed on the entire surface, but is formed only near the winding portion using a metal mask or the like. The reason is that when a magnetic thin film is formed on the entire surface, the structure shown in FIG.
This is because, as shown in (c), processing is difficult due to the selection ratio (etching rate ratio) to the underlying insulating layer, and the number of steps is increased. 5B is a sectional view taken along line EE of FIG.
FIG. 5C is a cross-sectional view taken along the line FF of FIG. 5A and shows the structure of the tape sliding surface.

【0017】図6(a)〜(e)〜図9(a)〜(c)は、
本発明による磁気ヘッド及びその製造方法の他の実施例
を説明するための構成図で、図6(a)〜(e)〜図7
(a)〜(c)は、一方の種類であるブロック(A)の工
程図で、図8(a)〜(f)は、他方の種類のブロック
(B)の工程図で、図9(a)〜(c)はブロック
(A)とブロック(B)の溶着の工程図を各々示してい
る。図中、1a,1bは基板、3a,3bは磁性薄膜、
20は溝、21はフロントギャップ部、22はバックコ
ア部で、その他、図1〜5と同じ作用をする部分は同一
の符号を付してある。
FIGS. 6 (a) to 6 (e) to 9 (a) to 9 (c)
6A to 6E are configuration diagrams for explaining another embodiment of the magnetic head and the manufacturing method thereof according to the present invention.
FIGS. 8A to 8C are process diagrams of one type of block (A), FIGS. 8A to 8F are process diagrams of the other type of block (B), and FIG. (a)-(c) shows the process drawing of welding of the block (A) and the block (B), respectively. In the figure, 1a and 1b are substrates, 3a and 3b are magnetic thin films,
Reference numeral 20 is a groove, 21 is a front gap portion, 22 is a back core portion, and other portions having the same functions as those in FIGS.

【0018】まず、ブロック(A)の工程について説明
する。図6(a)に示すように、基板1aである結晶化
ガラス基板やセラミック基板に、軟磁性薄膜(センダス
ト合金膜,窒化鉄等)と層間絶縁膜(SiO2,SiO,
Si34,Al23等)とを交互に成膜して磁性薄膜3a
とし、さらに、その上に絶縁層5を形成する。
First, the process of block (A) will be described. As shown in FIG. 6A, a soft magnetic thin film (sendust alloy film, iron nitride, etc.) and an interlayer insulating film (SiO 2 , SiO 2 ,
Si 3 N 4 , Al 2 O 3 etc.) are alternately deposited to form the magnetic thin film 3a.
Then, the insulating layer 5 is formed thereon.

【0019】次に、図6(b),(c)に示すように、
前述した方法で第1導電層(巻線部)6を形成後、図6
(d),(e)に示すように、絶縁層7を形成して平坦
化処理を行い、第2導電層(巻線部)9を形成後、絶縁
層10を形成して平坦化処理を行う。なお、図6(c)
は図6(b)のG−G断面図、図6(e)は図6(d)
のH−H断面図である。
Next, as shown in FIGS. 6 (b) and 6 (c),
After forming the first conductive layer (winding portion) 6 by the method described above,
As shown in (d) and (e), the insulating layer 7 is formed and flattened, and after the second conductive layer (winding portion) 9 is formed, the insulating layer 10 is formed and flattened. To do. Note that FIG. 6 (c)
6B is a sectional view taken along line GG in FIG. 6B, and FIG. 6E is FIG. 6D.
FIG. 3 is a sectional view taken along line HH of

【0020】次に、図7(a)〜(c)に示すように、
フロントギャップ部11及びバックコア部12の絶縁層
を加工後、ギャップ部13として絶縁層を形成する。な
お、図7(b)は図7(a)のI−I断面図、図7
(c)は図7(a)のJ−J断面図である。
Next, as shown in FIGS. 7 (a) to 7 (c),
After processing the insulating layers of the front gap portion 11 and the back core portion 12, the insulating layer is formed as the gap portion 13. 7B is a sectional view taken along the line I-I of FIG.
7C is a sectional view taken along line JJ of FIG.

【0021】次に、ブロック(B)の工程について説明
する。前述の工程と同様に、精度1000程度のブレードを
用いたダイシング加工によって、図8(a)に示すよう
に、基板1bである結晶化ガラス基板やセラミック基板
に断面形状が略V字状の連続した溝2を形成後、これら
溝2の表面にEB蒸着法等により、軟磁性薄膜(センダ
スト合金膜等)と層間絶縁膜(SiO2等)とを交互に成
膜して磁性薄膜3bを形成する。
Next, the process of block (B) will be described. Similar to the above-mentioned process, by dicing using a blade with an accuracy of about 1000, as shown in FIG. 8A, a crystallized glass substrate or a ceramic substrate, which is the substrate 1b, has a continuous V-shaped cross section. After forming the formed grooves 2, a soft magnetic thin film (Sendust alloy film or the like) and an interlayer insulating film (SiO 2 or the like) are alternately formed on the surface of these grooves 2 by an EB vapor deposition method or the like to form a magnetic thin film 3b. To do.

【0022】次に、図8(b)に示すように、各溝2に
低融点ガラス4を充填し、溝2の頂点部に達するまで研
磨し、平面状の研磨面を形成する。次に、図8(c),
(d)に示すように、ペアブロック上に形成した巻線部
のフロントギャップ部とバックコア部の距離よりも若干
小さい幅で、台形,半円形又は略V,U形状のブレード
を用いてダイシング加工により、深さ5μ〜100μ程
度の溝20を形成する。なお、図8(d)は図8(c)
のK−K断面図である。
Next, as shown in FIG. 8 (b), each groove 2 is filled with a low melting point glass 4 and polished until reaching the top of the groove 2 to form a flat polished surface. Next, as shown in FIG.
As shown in (d), dicing is performed by using a trapezoidal, semicircular, or substantially V, U-shaped blade with a width slightly smaller than the distance between the front gap part and the back core part of the winding part formed on the pair block. By processing, a groove 20 having a depth of about 5 μ to 100 μ is formed. Note that FIG. 8 (d) is shown in FIG. 8 (c).
FIG.

【0023】さらに、図8(e),(f)に示すよう
に、フォトレジストをマスクに、フロントギャップ部2
1及びバックコア部22を残して、導入ガスArでイオ
ンミング装置により5μ〜10μ加工する。なお、図8
(f)は図8(e)のL−L断面図である。なお、前記
ダイシング加工とイオンミーリング装置により、加工は
工程を逆にしても同様の効果が得られる。
Further, as shown in FIGS. 8 (e) and 8 (f), the front gap portion 2 is formed using a photoresist as a mask.
While leaving 1 and the back core portion 22, 5 μ to 10 μ is processed with an introduced gas Ar by an ionming device. Note that FIG.
(F) is a LL sectional view of FIG. By the dicing process and the ion milling device, the same effect can be obtained even if the process steps are reversed.

【0024】次に、溶着工程について説明する。図7
(a)に示すブロック(A)と、図8(e)に示すブロ
ック(B)とを、フロントギャップ部11,21,バッ
クコア部12,22が合致するようにガラス溶着を行う
と、図9(a)〜(c)に示すような磁気ヘッドが完成
する。なお、図9(b)は図9(a)のM−M断面図
で、図9(c)は図9(a)のN−N断面図で、テープ
摺動面の構造である。
Next, the welding process will be described. Figure 7
When the block (A) shown in (a) and the block (B) shown in FIG. 8 (e) are glass-welded so that the front gap portions 11,21 and the back core portions 12,22 are aligned, A magnetic head as shown in 9 (a) to 9 (c) is completed. 9B is a sectional view taken along the line MM of FIG. 9A, and FIG. 9C is a sectional view taken along the line NN of FIG. 9A, showing the structure of the tape sliding surface.

【0025】[0025]

【発明の効果】以上の説明から明らかなように、本発明
によると、以下のような効果がある。 (1)請求項1,2に対応する効果:基板の表面に略V
字状の複数の溝を形成し、各溝の一方の溝壁面に沿って
第1の磁性薄膜を設け、その後、溝に低融点ガラスを充
填して薄膜コイルとギャップ層を形成後、第2の磁性薄
膜を形成して狭トラック幅の磁気ヘッドを製造している
ので、ガラス溶着工程がないため、低融点ガラス上に巻
線が形成されていても、絶縁層のクラックや巻線の断線
ショートを防止でき、信頼性や歩留の向上及び出力の低
下を防止できる。 (2)請求項3に対応する効果:一方の基板上に磁性薄
膜と薄膜コイルを設け、もう一方の基板上にはV溝と磁
性薄膜を設け、低融点ガラスをモールド後、基板の一部
を残して2種類の加工を施し、上記2つの基板を溶着し
て、狭トラック幅の磁気ヘッドを製造しているので、巻
線部の下地に低融点ガラスが存在しないため、ガラス溶
着しても絶縁層のクラックや巻線の断線ショートがなく
なり、信頼性や歩留の向上が図れる。また、巻線を形成
していないブロックを2種類の物理的加工を施している
ので、コア間の距離が大きくなり、そのため磁束の漏れ
が減少し、出力の向上が図れる。
As is apparent from the above description, the present invention has the following effects. (1) Effects corresponding to claims 1 and 2: Substantially V on the surface of the substrate
A plurality of V-shaped grooves are formed, a first magnetic thin film is provided along one wall surface of each groove, and then the groove is filled with a low melting point glass to form a thin film coil and a gap layer, and then a second magnetic thin film is formed. Since a magnetic head with a narrow track width is manufactured by forming the magnetic thin film of, there is no glass welding process, so even if the winding is formed on the low melting point glass, the insulation layer cracks or the winding breaks. It is possible to prevent short circuits, improve reliability and yield, and prevent output from decreasing. (2) Effect corresponding to claim 3: A magnetic thin film and a thin film coil are provided on one substrate, a V groove and a magnetic thin film are provided on the other substrate, and a part of the substrate is formed after molding a low melting point glass. , The two substrates are welded together to produce a magnetic head with a narrow track width, so there is no low-melting glass on the base of the winding part. In addition, cracks in the insulating layer and breaks in the winding are eliminated, and reliability and yield can be improved. In addition, since the blocks in which the windings are not formed are subjected to two types of physical processing, the distance between the cores increases, which reduces the leakage of magnetic flux and improves the output.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による磁気ヘッド及びその製造方法の一
実施例を説明するための構成図(その1)である。
FIG. 1 is a configuration diagram (No. 1) for explaining an embodiment of a magnetic head and a manufacturing method thereof according to the present invention.

【図2】本発明による磁気ヘッド及びその製造方法の一
実施例を説明するための構成図(その2)である。
FIG. 2 is a configuration diagram (No. 2) for explaining one embodiment of the magnetic head and the method for manufacturing the same according to the present invention.

【図3】本発明による磁気ヘッド及びその製造方法の一
実施例を説明するための構成図(その3)である。
FIG. 3 is a configuration diagram (No. 3) for explaining one embodiment of the magnetic head and the manufacturing method thereof according to the present invention.

【図4】本発明による磁気ヘッド及びその製造方法の一
実施例を説明するための構成図(その4)である。
FIG. 4 is a configuration diagram (No. 4) for explaining one embodiment of the magnetic head and the manufacturing method thereof according to the present invention.

【図5】本発明による磁気ヘッド及びその製造方法の一
実施例を説明するための構成図(その5)である。
FIG. 5 is a configuration diagram (No. 5) for explaining one embodiment of the magnetic head and the method for manufacturing the magnetic head according to the present invention.

【図6】本発明による磁気ヘッド及びその製造方法の他
の実施例を説明するための構成図(その1)である。
FIG. 6 is a configuration diagram (No. 1) for explaining another embodiment of the magnetic head and the method for manufacturing the same according to the present invention.

【図7】本発明による磁気ヘッド及びその製造方法の他
の実施例を説明するための構成図(その2)である。
FIG. 7 is a configuration diagram (No. 2) for explaining another embodiment of the magnetic head and the method for manufacturing the same according to the present invention.

【図8】本発明による磁気ヘッド及びその製造方法の他
の実施例を説明するための構成図(その3)である。
FIG. 8 is a configuration diagram (No. 3) for explaining another embodiment of the magnetic head and the method for manufacturing the same according to the present invention.

【図9】本発明による磁気ヘッド及びその製造方法の他
の実施例を説明するための構成図(その4)である。
FIG. 9 is a configuration diagram (No. 4) for explaining another embodiment of the magnetic head and the method for manufacturing the same according to the present invention.

【図10】従来の磁気ヘッドの製造工程図(その1)で
ある。
FIG. 10 is a manufacturing process diagram (1) of a conventional magnetic head.

【図11】従来の磁気ヘッドの製造工程図(その2)で
ある。
FIG. 11 is a manufacturing process diagram (2) of the conventional magnetic head.

【図12】従来の磁気ヘッドの製造工程図(その3)で
ある。
FIG. 12 is a manufacturing process diagram (3) of the conventional magnetic head.

【符号の説明】[Explanation of symbols]

1a,1b…基板、2…V字状の溝、3a,3b…磁性
薄膜、4…低融点ガラス、5…絶縁層、6…第1導電
層、7…絶縁層、8…絶縁層の一部、9…第2導電層、
10…絶縁層、11…フロントギャップ部、12…バッ
クコア部、13…ギャップ部、14…磁性薄膜、20…
溝、21…フロントギャップ部、22…バックコア部。
1a, 1b ... Substrate, 2 ... V-shaped groove, 3a, 3b ... Magnetic thin film, 4 ... Low melting point glass, 5 ... Insulating layer, 6 ... First conductive layer, 7 ... Insulating layer, 8 ... One of insulating layer Part, 9 ... second conductive layer,
10 ... Insulating layer, 11 ... Front gap part, 12 ... Back core part, 13 ... Gap part, 14 ... Magnetic thin film, 20 ...
Grooves, 21 ... Front gap part, 22 ... Back core part.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 略V字状の溝とギャップ層に対して傾斜
して形成された第1の磁性薄膜と、薄膜コイルとギャッ
プ層に対して平行に形成された第2の磁性薄膜とを具備
したことを特徴とする磁気ヘッド。
1. A first magnetic thin film formed so as to be inclined with respect to the substantially V-shaped groove and the gap layer, and a second magnetic thin film formed parallel to the thin film coil and the gap layer. A magnetic head characterized by being provided.
【請求項2】 基板の表面に略V字状の複数の溝を形成
し、各溝の一方の溝壁面に沿って軟磁性薄膜と層間絶縁
膜とを交互に積層して第1の磁性薄膜を設け、その後、
略V字状の複数の溝に低融点ガラスを充填し、薄膜コイ
ルとギャップ層を形成後、第2の磁性薄膜を形成したこ
とを特徴とする磁気ヘッドの製造方法。
2. A first magnetic thin film in which a plurality of substantially V-shaped grooves are formed on the surface of a substrate, and soft magnetic thin films and interlayer insulating films are alternately laminated along one groove wall surface of each groove. And then
A method of manufacturing a magnetic head, characterized in that a plurality of substantially V-shaped grooves are filled with a low melting point glass, a thin film coil and a gap layer are formed, and then a second magnetic thin film is formed.
【請求項3】 一方の基板上に磁性薄膜と薄膜コイルを
設け、もう一方の基板表面に略V字状の溝と該V字状の
溝の壁面に磁性薄膜を設け、該V字状の溝に低融点ガラ
スをモールド後、該基板表面の一部を残して物理的に2
種類の加工を施し、前記2つの基板を溶着することを特
徴とする磁気ヘッドの製造方法。
3. A magnetic thin film and a thin film coil are provided on one substrate, a substantially V-shaped groove is provided on the surface of the other substrate, and a magnetic thin film is provided on the wall surface of the V-shaped groove. After molding the low melting point glass into the groove, physically 2
A method of manufacturing a magnetic head, characterized in that various types of processing are performed and the two substrates are welded.
JP06153725A 1994-07-05 1994-07-05 Manufacturing method of magnetic head Expired - Fee Related JP3135021B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP06153725A JP3135021B2 (en) 1994-07-05 1994-07-05 Manufacturing method of magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06153725A JP3135021B2 (en) 1994-07-05 1994-07-05 Manufacturing method of magnetic head

Publications (2)

Publication Number Publication Date
JPH0822608A true JPH0822608A (en) 1996-01-23
JP3135021B2 JP3135021B2 (en) 2001-02-13

Family

ID=15568737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP06153725A Expired - Fee Related JP3135021B2 (en) 1994-07-05 1994-07-05 Manufacturing method of magnetic head

Country Status (1)

Country Link
JP (1) JP3135021B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655829A (en) * 1987-07-07 1994-03-01 Asahi Glass Co Ltd Recording sheet
US7070840B2 (en) 2001-04-27 2006-07-04 Fuji Photo Film Co., Ltd. Inkjet recording sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655829A (en) * 1987-07-07 1994-03-01 Asahi Glass Co Ltd Recording sheet
US7070840B2 (en) 2001-04-27 2006-07-04 Fuji Photo Film Co., Ltd. Inkjet recording sheet

Also Published As

Publication number Publication date
JP3135021B2 (en) 2001-02-13

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