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GB1386279A - Multidigit liquid crystal display devices and multiplex driving circuits therefor - Google Patents

Multidigit liquid crystal display devices and multiplex driving circuits therefor

Info

Publication number
GB1386279A
GB1386279A GB3743172A GB3743172A GB1386279A GB 1386279 A GB1386279 A GB 1386279A GB 3743172 A GB3743172 A GB 3743172A GB 3743172 A GB3743172 A GB 3743172A GB 1386279 A GB1386279 A GB 1386279A
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
crystal display
electrodes
applying
potentials
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
GB3743172A
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.)
Olivetti SpA
Original Assignee
Olivetti SpA
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
Priority claimed from IT70842/71A external-priority patent/IT951702B/en
Application filed by Olivetti SpA filed Critical Olivetti SpA
Publication of GB1386279A publication Critical patent/GB1386279A/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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133345—Insulating layers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

1386279 Matrix displays ING C OLIVETTI & C SpA 10 Aug 1972 [11 Aug 1971 13 Sept 1971 24 Nov 1971 1 Dec 1971 8 Dec 1971] 37431/72 Heading G5C Display apparatus comprises a liquid crystal display panel 11 including a plurality of electrode arrays 13 with corresponding electrodes connected and a common electrode adjacent each array, and a driving circuit comprising means for sequentially applying a reference potential to successive common electrodes and an A.C. erasing potential to the remaining common electrodes and means for applying synchronized actuating potentials to selected groups of array electrodes. Actuating potentials are produced by data from a source 23 applied to a binary decoder 31 via a series to parallel converter 24 and buffer 29. The reference and erasing potentials are applied by a shift register 33 which sequentially grounds one common electrode and leaves the remainder in open circuit and connected to the oscillator 35 applying the erasing potential. A bias voltage 41 is applied to all the electrode arrays to prevent spurious activation. The panel comprises a continuous layer of liquid crystal material and a plurality of figure-of-eight arrays.
GB3743172A 1971-08-11 1972-08-10 Multidigit liquid crystal display devices and multiplex driving circuits therefor Expired GB1386279A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US17080371A 1971-08-11 1971-08-11
US18004271A 1971-09-13 1971-09-13
IT70842/71A IT951702B (en) 1971-11-24 1971-11-24 IMPROVEMENTS TO LIQUID CRYSTAL DISPLAY DEVICES
US20388471A 1971-12-01 1971-12-01
US20586471A 1971-12-08 1971-12-08

Publications (1)

Publication Number Publication Date
GB1386279A true GB1386279A (en) 1975-03-05

Family

ID=27517883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3743172A Expired GB1386279A (en) 1971-08-11 1972-08-10 Multidigit liquid crystal display devices and multiplex driving circuits therefor

Country Status (3)

Country Link
JP (1) JPS4826496A (en)
DE (1) DE2238429B2 (en)
GB (1) GB1386279A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700306A (en) * 1971-09-22 1972-10-24 Ncr Co Electro-optic shutter having a thin glass or silicon oxide layer between the electrodes and the liquid crystal
JPS5439744B2 (en) * 1972-03-15 1979-11-29
JPS49106844A (en) * 1973-02-12 1974-10-09
GB1464875A (en) * 1973-05-11 1977-02-16 Solartron Electronic Group Electrical measuring instrument hav8ng a liquid crystal display
JPS5733564B2 (en) * 1973-08-17 1982-07-17
FR2248529B1 (en) * 1973-10-19 1978-02-17 Thomson Csf
JPS5189348A (en) * 1975-02-04 1976-08-05
JPS5947287B2 (en) * 1975-03-31 1984-11-17 シャープ株式会社 Manufacturing method of twisted nematic liquid crystal display element
JPS527749A (en) * 1975-07-08 1977-01-21 Dainippon Printing Co Ltd Electrooptic electrode substrate
JPS527751A (en) * 1975-07-08 1977-01-21 Dainippon Printing Co Ltd Photoelectric cell
JPS527757A (en) * 1975-07-09 1977-01-21 Dainippon Printing Co Ltd Photoelectric electrode substrate
JPS5220847A (en) * 1975-08-09 1977-02-17 Sharp Corp Base panel for holding liquid crystal
JPS5227654A (en) * 1975-08-27 1977-03-02 Dainippon Printing Co Ltd Electrooptical cell
JPS5683718A (en) * 1979-12-13 1981-07-08 Asahi Glass Co Ltd Liquid crystal display element
DE3001125A1 (en) * 1980-01-14 1981-07-16 Siemens AG, 1000 Berlin und 8000 München METHOD FOR PRODUCING A LIQUID CRYSTAL DISPLAY

Also Published As

Publication number Publication date
DE2238429A1 (en) 1973-02-15
JPS4826496A (en) 1973-04-07
DE2238429B2 (en) 1976-01-08

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Legal Events

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