GB1378568A - Memory arrangements - Google Patents

Memory arrangements

Info

Publication number
GB1378568A
GB1378568A GB2354972A GB2354972A GB1378568A GB 1378568 A GB1378568 A GB 1378568A GB 2354972 A GB2354972 A GB 2354972A GB 2354972 A GB2354972 A GB 2354972A GB 1378568 A GB1378568 A GB 1378568A
Authority
GB
United Kingdom
Prior art keywords
capacitor
charge
terminal
gate
electrodes
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
Application number
GB2354972A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB2354972A priority Critical patent/GB1378568A/en
Priority to DE19732325379 priority patent/DE2325379A1/en
Priority to FR7318227A priority patent/FR2185834B1/fr
Publication of GB1378568A publication Critical patent/GB1378568A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
    • G11C11/403—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells with charge regeneration common to a multiplicity of memory cells, i.e. external refresh

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Liquid Crystal (AREA)
  • Thin Film Transistor (AREA)

Abstract

1378568 Capacitor stores MARCONI CO Ltd 28 Feb 1973 [19 May 1972] 23549/72 Heading G4C [Also in Division H1] A store comprises a capacitor with liquid crystal material between the electrodes. Means is provided to charge the capacitor according to a data input signal, to read out the charge, and to erase the charge. A capacitor comprising electrodes 2, 4, Fig. 2, is charged by data on terminal 15 when terminal 17 of a MOST gate 13 is made positive. The charge is read out to terminal 30 by applying a positive read pulse to dual gate MOST gate 24. Charge on the capacitor may be erased by applying a negative potential to electrode 2 on opening MOST gate 22 or by applying an alternating potential to terminal 35. The "store may comprise a plurality of such capacitors, one electrode being common to each capacitor. The common electrode is formed by evaporating tin-oxide on to a glass substrate, and the other electrodes by evaporating aluminium, magnesium or tantalum on to a glass substrate.
GB2354972A 1972-05-19 1972-05-19 Memory arrangements Expired GB1378568A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2354972A GB1378568A (en) 1972-05-19 1972-05-19 Memory arrangements
DE19732325379 DE2325379A1 (en) 1972-05-19 1973-05-18 STORAGE DEVICE
FR7318227A FR2185834B1 (en) 1972-05-19 1973-05-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2354972A GB1378568A (en) 1972-05-19 1972-05-19 Memory arrangements

Publications (1)

Publication Number Publication Date
GB1378568A true GB1378568A (en) 1974-12-27

Family

ID=10197457

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2354972A Expired GB1378568A (en) 1972-05-19 1972-05-19 Memory arrangements

Country Status (3)

Country Link
DE (1) DE2325379A1 (en)
FR (1) FR2185834B1 (en)
GB (1) GB1378568A (en)

Also Published As

Publication number Publication date
DE2325379A1 (en) 1973-11-22
FR2185834B1 (en) 1976-09-17
FR2185834A1 (en) 1974-01-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee