FR2413754A1 - PROCESS FOR MANUFACTURING THE PROPAGATION ELEMENTS OF CONTIGUOUS BUBBLE DOMAINS - Google Patents

PROCESS FOR MANUFACTURING THE PROPAGATION ELEMENTS OF CONTIGUOUS BUBBLE DOMAINS

Info

Publication number
FR2413754A1
FR2413754A1 FR7834439A FR7834439A FR2413754A1 FR 2413754 A1 FR2413754 A1 FR 2413754A1 FR 7834439 A FR7834439 A FR 7834439A FR 7834439 A FR7834439 A FR 7834439A FR 2413754 A1 FR2413754 A1 FR 2413754A1
Authority
FR
France
Prior art keywords
elements
manufacturing
exposure
bubble domains
propagation elements
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
FR7834439A
Other languages
French (fr)
Other versions
FR2413754B1 (en
Inventor
Burn J Lin
Yeong S Lin
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2413754A1 publication Critical patent/FR2413754A1/en
Application granted granted Critical
Publication of FR2413754B1 publication Critical patent/FR2413754B1/fr
Granted legal-status Critical Current

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
    • G11C19/0808—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation
    • 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
    • G11C19/0808—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation
    • G11C19/0816—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation using a rotating or alternating coplanar magnetic field

Landscapes

  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Thin Magnetic Films (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PROCEDE POUR FORMER DES DISPOSITIFS A BULLES AYANT DES ELEMENTS DE PROPAGATION CONTIGUS, DE FORME QUELCONQUE PAR EXEMPLE, DISQUES. LE MASQUE UTILISE POUR DEFINIR LES ELEMENTS COMPREND DES OUVERTURES DISTINCTES. UNE PREMIERE EXPOSITION EST UTILISEE POUR PRODUIRE DES ELEMENTS 44, 46, 48 QUI SONT SEPARES LES UNS DES AUTRES. UNE SECONDE EXPOSITION EST REALISEE APRES DEPLACEMENT RELATIF DU MASQUE ET DU SUBSTRAT, POUR PRODUIRE DES ELEMENTS 44, 46, 48 QUI SONT SITUES ENTRE CEUX PRODUITS AU COURS DE LA PREMIERE EXPOSITION. APPLICATION A LA FABRICATION DES MEMOIRES A BULLES MAGNETIQUES.PROCESS FOR FORMING BUBBLE DEVICES HAVING CONTIGUOUS PROPAGATION ELEMENTS, OF ANY SHAPE FOR EXAMPLE, DISCS. THE MASK USED TO DEFINE THE ELEMENTS INCLUDES DISTINCT OPENINGS. A FIRST EXPOSURE IS USED TO PRODUCE ELEMENTS 44, 46, 48 WHICH ARE SEPARATE FROM ONE OF THE OTHERS. A SECOND EXPOSURE IS CARRIED OUT AFTER RELATIVE DISPLACEMENT OF THE MASK AND THE SUBSTRATE, TO PRODUCE ELEMENTS 44, 46, 48 WHICH ARE LOCATED BETWEEN THOSE PRODUCTS DURING THE FIRST EXPOSURE. APPLICATION TO THE MANUFACTURE OF MAGNETIC BUBBLE MEMORIES.

FR7834439A 1977-12-30 1978-11-30 PROCESS FOR MANUFACTURING THE PROPAGATION ELEMENTS OF CONTIGUOUS BUBBLE DOMAINS Granted FR2413754A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86619677A 1977-12-30 1977-12-30

Publications (2)

Publication Number Publication Date
FR2413754A1 true FR2413754A1 (en) 1979-07-27
FR2413754B1 FR2413754B1 (en) 1982-12-03

Family

ID=25347124

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834439A Granted FR2413754A1 (en) 1977-12-30 1978-11-30 PROCESS FOR MANUFACTURING THE PROPAGATION ELEMENTS OF CONTIGUOUS BUBBLE DOMAINS

Country Status (4)

Country Link
JP (1) JPS5823671B2 (en)
DE (1) DE2854402A1 (en)
FR (1) FR2413754A1 (en)
GB (1) GB2012130A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5687286A (en) * 1979-12-17 1981-07-15 Fujitsu Ltd Magnetic bubble element
FR2529369A1 (en) * 1982-06-29 1983-12-30 Commissariat Energie Atomique MEMORY WITH MAGNETIC BUBBLES WITH NON IMPLANTED PATTERNS, ITS USE FOR THE DUPLICATION OF BUBBLES AND ITS APPLICATION TO DUPLICATION BY BINARY ELEMENT AND BY BLOCK OF BINARY ELEMENTS

Also Published As

Publication number Publication date
GB2012130A (en) 1979-07-18
JPS5494245A (en) 1979-07-25
FR2413754B1 (en) 1982-12-03
GB2012130B (en)
DE2854402A1 (en) 1979-07-05
JPS5823671B2 (en) 1983-05-17

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Legal Events

Date Code Title Description
ST Notification of lapse