GB1557581A - Liquid crystal display devices - Google Patents

Liquid crystal display devices

Info

Publication number
GB1557581A
GB1557581A GB39134/76A GB3913476A GB1557581A GB 1557581 A GB1557581 A GB 1557581A GB 39134/76 A GB39134/76 A GB 39134/76A GB 3913476 A GB3913476 A GB 3913476A GB 1557581 A GB1557581 A GB 1557581A
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
crystal display
display devices
devices
liquid
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
GB39134/76A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 CH1231975A external-priority patent/CH590491A5/xx
Priority claimed from CH806776A external-priority patent/CH600471A5/xx
Application filed by BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1557581A publication Critical patent/GB1557581A/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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0463—Portable signs, boards or panels
GB39134/76A 1975-09-23 1976-09-21 Liquid crystal display devices Expired GB1557581A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1231975A CH590491A5 (en) 1975-09-23 1975-09-23
CH806776A CH600471A5 (en) 1976-06-24 1976-06-24

Publications (1)

Publication Number Publication Date
GB1557581A true GB1557581A (en) 1979-12-12

Family

ID=25702746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39134/76A Expired GB1557581A (en) 1975-09-23 1976-09-21 Liquid crystal display devices

Country Status (4)

Country Link
JP (1) JPS5240095A (en)
AT (1) AT347512B (en)
FR (1) FR2326002A1 (en)
GB (1) GB1557581A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229783A (en) * 1979-03-12 1980-10-21 Timex Corporation Backlight for electrooptic display
DE2927100A1 (en) * 1979-07-04 1981-01-08 Siemens Ag ARRANGEMENT FOR BRIGHTNESS ENHANCEMENT OF PASSIVE DISPLAY DEVICES
DE2930507A1 (en) * 1979-07-27 1981-02-12 Licentia Gmbh DISPLAY DEVICE
DE3424239A1 (en) * 1984-06-30 1986-01-16 Mannesmann Kienzle GmbH, 7730 Villingen-Schwenningen ELECTRONIC DISPLAY DEVICE
WO2005024873A1 (en) * 2003-09-08 2005-03-17 Koninklijke Philips Electronics N.V. A body and an electronic device

Also Published As

Publication number Publication date
ATA703176A (en) 1978-05-15
JPS5240095A (en) 1977-03-28
FR2326002A1 (en) 1977-04-22
FR2326002B3 (en) 1979-06-01
AT347512B (en) 1978-12-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee