JPS6037546B2 - magnetic bubble element - Google Patents
magnetic bubble elementInfo
- Publication number
- JPS6037546B2 JPS6037546B2 JP897381A JP897381A JPS6037546B2 JP S6037546 B2 JPS6037546 B2 JP S6037546B2 JP 897381 A JP897381 A JP 897381A JP 897381 A JP897381 A JP 897381A JP S6037546 B2 JPS6037546 B2 JP S6037546B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- bubble
- current
- magnetic bubble
- sheet
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
- G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
- G11C19/0875—Organisation of a plurality of magnetic shift registers
Description
【発明の詳細な説明】
本発明は低駆動電流により二層導体電流駆動型磁気バブ
ル素子を駆動することが出来、且つ製造面からの歩蟹り
のよい正方形のメモリチップを得ることが出来るバブル
転送パターンの配置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a bubble that can drive a two-layer conductor current-driven magnetic bubble element with a low driving current and that can obtain a square memory chip with good manufacturing performance. This relates to the arrangement of transfer patterns.
従来の二層導体電流駆動型磁気バブル素子のパターン配
置図を第１図に示す。A pattern layout diagram of a conventional two-layer conductor current-driven magnetic bubble element is shown in FIG.
二層導体電流駆動型磁気バブル素子のバブル転送等の駆
動原理、方式等は文献を参照されたい（氏１１ Ｓ代ｔ
ｅｍＴｅＣｈｎｉｃａｌ Ｊｏｕｒ雌Ｉ ，ＶｏＩ５８
， Ｎｏ．６ｐｐ，１４５３〜１５４０，１９７９）。
１はメモリチップ、２は導体シート、３はバブル発生器
、４は検出器、５はゲート、６はメジヤラツク、７はマ
イナループであり情報バブルの貯蔵部である。Please refer to the literature for driving principles and methods such as bubble transfer of the two-layer conductor current-driven magnetic bubble element (Mr. 11 S.
emTeChnical Jour Female I, VoI58
, No. 6pp, 1453-1540, 1979).
1 is a memory chip, 2 is a conductor sheet, 3 is a bubble generator, 4 is a detector, 5 is a gate, 6 is a medial rack, and 7 is a minor loop, which is a storage section for information bubbles.
これでは現在のパーマロィ型バブルデバイスで用いられ
ている情報バブルのｅｖｅｎ−Ｍｄ方式での貯蔵が不可
である。それ故、情報バブルの発生パターンも１０１０
・・・・・・であり、読み出しパターンも１０１０・・
・・・・である為、データレートが遅くなり、二層導体
電流駆動法の長所である高速性が減ずる。ｅｖｅｎ−ｏ
ｄｄ方式を採用するには従釆のパターン配魔法では問題
が生ずる。すなわち全駆動電流を上げない為には第１図
のような導体層シート２を１つのチップの上に横に並べ
る方法がある。しかしこれではチップは極端に細長い長
方形型となり、製造歩留りが極めて悪くなる。因に数Ａ
の駆動電流で容量ＩＭｂｉｔのメモリチップならば形状
は５×７仇肋程度となる。反対にメモリチップの形状を
正方形とするには第１図のような導体シート２を１つの
チップの上に縦に並べる方法がある。しかしこれでは駆
動電流は１０Ａ近くなり、外部駆動系の設計が困難とな
る。二層導体電流駆動法では磁気バブルを駆動する為に
導体層シート２に通電する電流密度が或る閥値以上必要
である故、通電方向と直角方向の導体シート中が大きく
なると駆動電流も大きくなる。すなわち従来のパターン
配置法では、駆動電流を上げずにメモリチップの形状を
正方形にすることは出来ない。本発明の目的はこれらの
欠点を除去することを目的とし、導体層に溝を設け、メ
モリチップを蛇状に複数段に分割し、情報バブルのｅｖ
ｅｎ−ｏｄｄ貯蔵方式を正方形のメモリチップ上に配す
ることが出来るパターン配置法を特徴とし、以下詳細に
説明する。This makes it impossible to store information bubbles in the even-Md method used in current Permalloy bubble devices. Therefore, the generation pattern of information bubbles is also 1010.
...and the read pattern is also 1010...
Because of this, the data rate becomes slow and the high speed, which is an advantage of the two-layer conductor current drive method, is reduced. even-o
In order to adopt the dd method, a problem arises with the subordinate pattern distribution magic. That is, in order not to increase the total drive current, there is a method of arranging conductor layer sheets 2 horizontally on one chip as shown in FIG. However, in this case, the chip becomes extremely elongated and rectangular, and the manufacturing yield becomes extremely poor. In fact, the number A
A memory chip with a drive current of IM bit and a capacity of IM bits has a shape of about 5×7 ribs. On the other hand, in order to make the shape of a memory chip square, there is a method of vertically arranging conductive sheets 2 on one chip as shown in FIG. However, in this case, the drive current is close to 10A, making it difficult to design an external drive system. In the two-layer conductor current driving method, in order to drive the magnetic bubble, the current density applied to the conductor layer sheet 2 needs to exceed a certain threshold value, so the driving current increases as the conductor sheet becomes larger in the direction perpendicular to the current direction. Become. That is, with the conventional pattern arrangement method, it is not possible to make the shape of the memory chip square without increasing the drive current. The purpose of the present invention is to eliminate these drawbacks, and by providing grooves in the conductor layer and dividing the memory chip into multiple stages in a serpentine shape, the EV of information bubbles can be reduced.
The en-odd storage method is characterized by a pattern arrangement method that can be arranged on a square memory chip, and will be described in detail below.
第２図は本発明の磁気バブル転送パターンの配置図を示
す。FIG. 2 shows a layout diagram of the magnetic bubble transfer pattern of the present invention.
１はメモリチップ、２は導体シート、２１はｅｖｅｎ情
報バブル貯蔵部、２２はｏｄｄ情報バブル貯蔵部、３は
バブル発生器、４は検出器、２５はスワップゲート、２
６はしプリケートゲート、２３，２４はメジヤトラツク
、７はマイナループである。1 is a memory chip, 2 is a conductor sheet, 21 is an even information bubble storage section, 22 is an odd information bubble storage section, 3 is a bubble generator, 4 is a detector, 25 is a swap gate, 2
6 is a replicate gate, 23 and 24 are major tracks, and 7 is a minor loop.
２７は本発明の特徴である導体層シート２を蛇状に分割
する為の溝である。27 is a groove for dividing the conductive layer sheet 2 into a serpentine shape, which is a feature of the present invention.
発生器３から各マィナループ７までのメジヤラインのｂ
ｉｔ数は、ｅｖｅｎ情報バブル貯蔵部では偶数個、ｏｄ
ｄ情報バブルが貯蔵部では奇数個である。すなわち、発
生器３でのバブル発生パターンは１１１……でも、ｅｖ
ｅｎ情報バブル貯蔵部２１ではその内の偶数番目の情報
だけが、ｏｄｄ情報バブル貯蔵部２２ではその内奇数番
目の情報だけが貯蔵され記憶する。バブルを駆動する為
の導体層への通電は２９の導体層シート端近傍に設けた
電極より行う。これより本発明の第２図は、第１図の導
体層シートを２個電気的には直列に接続した状態であり
ながらチップ形状を正方形とすることが可能である。新
しく導体層２に設けられた溝２７がｅｖｅｎ−ｏｄｄ方
式の情報バブル貯蔵を可能ならしめ、且つその２つの貯
蔵部２１，２２が電気的に直列に接続されている。第２
図のように直列に接続されている故、通電方向と直角方
向の導体シート中２が第１図に比べて増大せず、為に全
駆動電流も増大しない。本発明の溝２７は第２図のよう
に指組状に互い違いに配される。検出部２８の導体層シ
ート中は任意に選べる。為に通常の磁気バブル貯蔵部２
１，２２の中に比べ４・さく出来る故、例えば検出部２
８だけ電流密度を他の部より４倍に行う等が可能である
。しかもこれは１つの外部駆動系で行い得る故、従釆の
ように検出部だけ別の駆動系が必要である等の不便がな
い。以上、説明したように導体層に指組状の溝を設けて
、導体層シート形状を蛇状に配し、中間部に検出部を設
ける。b of the major line from generator 3 to each minor loop 7
The number of it is an even number in the even information bubble storage unit, od
There is an odd number of d information bubbles in the storage. In other words, the bubble generation pattern in generator 3 is 111...but ev
The en information bubble storage section 21 stores only even-numbered information, and the odd information bubble storage section 22 stores only odd-numbered information. Electricity is supplied to the conductor layer for driving the bubbles through an electrode provided near the end of the conductor layer sheet 29. From this, in FIG. 2 of the present invention, it is possible to make the chip shape square even though the two conductor layer sheets shown in FIG. 1 are electrically connected in series. A new groove 27 in the conductor layer 2 enables even-odd information bubble storage, and the two storage parts 21, 22 are electrically connected in series. Second
Since they are connected in series as shown in the figure, the conductor sheet medium 2 in the direction perpendicular to the current direction does not increase compared to FIG. 1, and therefore the total drive current does not increase. The grooves 27 of the present invention are arranged alternately in a finger pattern as shown in FIG. The conductor layer sheet of the detection section 28 can be selected arbitrarily. For normal magnetic bubble storage part 2
For example, the detection unit 2 can be divided into 4.
It is possible to increase the current density by 8 times as much as in other parts. Furthermore, since this can be done with one external drive system, there is no inconvenience such as the need for a separate drive system for the detection section unlike in the case of a slave. As described above, the finger-shaped grooves are provided in the conductor layer, the conductor layer sheet shape is arranged in a serpentine shape, and the detection part is provided in the middle part.
この為、全駆動電流の低減が可能であり、且つ大容量磁
気バブルメモリに適用する場合も、チップ形状を正方形
にすることが出来る。チップ形状が正方形ならば１ウェ
ハから得られるチップの数も長方形に比べ極めて多く、
製造歩蟹りが向上する。本発明の配置法を用いることに
より二層導体電流駆動型磁気バブルメモリの低駆動電流
、大容量化が極めて容易になる。本発明では３段までの
分割であったが、勿論多段でも可能であるのは自明であ
る。本発明は指組状溝により導体シートを蛇状に分割し
ているので、導体シート中が増大せず、為に低駆動電流
であるので二層導体電流駆動型磁気バブルメモ川こ利用
出来る。Therefore, the total drive current can be reduced, and even when applied to a large capacity magnetic bubble memory, the chip shape can be made square. If the chip shape is square, the number of chips that can be obtained from one wafer is significantly larger than if it is rectangular.
Manufacturing process will be improved. By using the arrangement method of the present invention, it is extremely easy to reduce the drive current and increase the capacity of the two-layer conductor current-driven magnetic bubble memory. In the present invention, division is performed in up to three stages, but it is obvious that multi-stage division is also possible. In the present invention, since the conductor sheet is divided into serpentine shapes by the finger-shaped grooves, the inside of the conductor sheet does not increase, and therefore the driving current is low, so that the double-layer conductor current-driven magnetic bubble memo can be used.
磁気バブルメモリの一層の高速、大容量化に極めて有用
である。It is extremely useful for increasing the speed and capacity of magnetic bubble memory.
第１図は従来の二層導体電流駆動型磁気バブル素子のパ
ターン配置図、第２図は本発明の二層導体電流駆動型磁
気バブル素子のパターン配置図である。
１・・・・・・メモリチップ、２・・・・・・導体シー
ト、３・・・・・・バブル発生器、４・・・・・・検出
器、７・・・・・・マィナループ、２１・・…・ｅｖｅ
ｎ情報バブル貯蔵部、２２・・・・・・ｏｄｄ情報バブ
ル貯蔵部、２３，２４・・・・・・メジヤトラツク、２
７……溝。
第１図
第２図FIG. 1 is a pattern layout diagram of a conventional two-layer conductor current-driven magnetic bubble element, and FIG. 2 is a pattern layout diagram of a two-layer conductor current-driven magnetic bubble element of the present invention. 1... Memory chip, 2... Conductor sheet, 3... Bubble generator, 4... Detector, 7... Minor loop, 21...eve
n information bubble storage unit, 22...odd information bubble storage unit, 23, 24...medium track, 2
7...Groove. Figure 1 Figure 2
Claims (1)
トラツクゲート及び検出器を有する導体シートをふくみ
二層導体電流駆動型磁気バブル素子において、導体シー
トがほぼ正方形で導体シートに指組状の溝を配すること
により導体シートを蛇行して連なる複数の領域に分割し
、先端と終端との領域でバブルを発生させ、ｅｖｅｎ−
ｏｄｄ貯蔵方式を採用して、バブル駆動電流を全体とし
て低減させ且つ特定域のみの駆動電流密度を増大させる
ことを特徴とする、磁気バブル素子。1. In a two-layer conductor current-driven magnetic bubble element that includes a conductor sheet having at least a bubble generator, a minor loop, a major track gate, and a detector, the conductor sheet is approximately square and finger-shaped grooves are arranged in the conductor sheet. The conductive sheet is divided into a plurality of meandering regions, and bubbles are generated in the regions of the tip and end, and even-
A magnetic bubble element characterized in that it employs an odd storage method to reduce bubble drive current as a whole and increase drive current density only in a specific region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP897381A JPS6037546B2 (en) | 1981-01-26 | 1981-01-26 | magnetic bubble element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP897381A JPS6037546B2 (en) | 1981-01-26 | 1981-01-26 | magnetic bubble element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57123586A JPS57123586A (en) | 1982-08-02 |
| JPS6037546B2 true JPS6037546B2 (en) | 1985-08-27 |
Family
ID=11707622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP897381A Expired JPS6037546B2 (en) | 1981-01-26 | 1981-01-26 | magnetic bubble element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037546B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62118855U (en) * | 1986-01-21 | 1987-07-28 | ||
| JPH0584987U (en) * | 1992-04-16 | 1993-11-16 | 充之 染葉 | Flag display device using compressed air from a compressor |
-
1981
- 1981-01-26 JP JP897381A patent/JPS6037546B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62118855U (en) * | 1986-01-21 | 1987-07-28 | ||
| JPH0584987U (en) * | 1992-04-16 | 1993-11-16 | 充之 染葉 | Flag display device using compressed air from a compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57123586A (en) | 1982-08-02 |
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