GB1479643A - Liquid-crystal display device - Google Patents

Liquid-crystal display device

Info

Publication number
GB1479643A
GB1479643A GB4717274A GB4717274A GB1479643A GB 1479643 A GB1479643 A GB 1479643A GB 4717274 A GB4717274 A GB 4717274A GB 4717274 A GB4717274 A GB 4717274A GB 1479643 A GB1479643 A GB 1479643A
Authority
GB
United Kingdom
Prior art keywords
region
electrodes
transparent
scattering
connections
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
GB4717274A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1479643A publication Critical patent/GB1479643A/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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134327—Segmented, e.g. alpha numeric display

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Geometry (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

1479643 Numeric display PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 31 Oct 1974 [3 Nov 1973] 47172/74 Heading G5C In a multi-digit numerical display incident light passes through transparent glass face plate 1 carrying on its rear surface transparent SnO electrodes, seven per digit in the form of figures of eight 11, 12 connected by transparent connections and separated by a layer of nematic liquid crystal suspension from a glass rearplate 2, not necessarily transparent, carrying a specularly selecting A1 coating 9 in the form of one region 14 including counter electrodes 15, 16 opposite electrode groups 11, 12, and a second region 13 separated by a thin etched line 20 from the region 14, covering the remainder of the field. Drive signals applied between specified electrodes in groups 11, 12 and counter electrode area 14 causes turbulence and optical scattering by the crystals, making the segment visible. A 1 kHz signal may be applied to region 13 to prevent scattering in this area with low threshold compositions. Scattering from the connections will in either case be prevented and coplanarity of rear electrodes and reflective prevents double imaging.
GB4717274A 1973-11-03 1974-10-31 Liquid-crystal display device Expired GB1479643A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7315103A NL7315103A (en) 1973-11-03 1973-11-03 DEVICE EQUIPPED WITH A LAYER OF LIQUID CRYSTAL.

Publications (1)

Publication Number Publication Date
GB1479643A true GB1479643A (en) 1977-07-13

Family

ID=19819934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4717274A Expired GB1479643A (en) 1973-11-03 1974-10-31 Liquid-crystal display device

Country Status (7)

Country Link
JP (1) JPS5081097A (en)
CA (1) CA1018639A (en)
CH (1) CH576153A5 (en)
DE (1) DE2450698C2 (en)
FR (1) FR2250173B1 (en)
GB (1) GB1479643A (en)
NL (1) NL7315103A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH626770GA3 (en) * 1977-03-16 1981-12-15 Method for producing a liquid crystal display having a guest/host liquid crystal layer
CH614828GA3 (en) * 1976-06-16 1979-12-28 Liquid-crystal display with a guest/host liquid-crystal layer and method for producing this liquid-crystal display
CH617281A5 (en) * 1977-07-29 1980-05-14 Bbc Brown Boveri & Cie
JPS5613271U (en) * 1979-07-12 1981-02-04
JP2678594B2 (en) * 1986-03-06 1997-11-17 セイコーエプソン株式会社 Liquid crystal display

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647280A (en) * 1969-11-06 1972-03-07 Rca Corp Liquid crystal display device
US3751137A (en) * 1971-10-18 1973-08-07 Rockwell International Corp Liquid crystal display device
JPS4878898A (en) * 1972-01-21 1973-10-23

Also Published As

Publication number Publication date
JPS5081097A (en) 1975-07-01
CH576153A5 (en) 1976-05-31
FR2250173B1 (en) 1978-11-24
DE2450698C2 (en) 1982-08-12
FR2250173A1 (en) 1975-05-30
DE2450698A1 (en) 1975-05-07
CA1018639A (en) 1977-10-04
NL7315103A (en) 1975-05-07

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Legal Events

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