GB1407299A - Display device - Google Patents

Display device

Info

Publication number
GB1407299A
GB1407299A GB5877672A GB5877672A GB1407299A GB 1407299 A GB1407299 A GB 1407299A GB 5877672 A GB5877672 A GB 5877672A GB 5877672 A GB5877672 A GB 5877672A GB 1407299 A GB1407299 A GB 1407299A
Authority
GB
United Kingdom
Prior art keywords
electric
ferro
dec
polarizer
reflector
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
GB5877672A
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 JP47002868A external-priority patent/JPS4871674A/ja
Priority claimed from JP275172A external-priority patent/JPS5525676B2/ja
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB1407299A publication Critical patent/GB1407299A/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 
    • G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/05—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect with ferro-electric properties
    • 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 
    • G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/055—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect the active material being a ceramic
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0035—Details constructional

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Electric Clocks (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

1407299 Electronic watches SUWA SEIKOSHA KK 20 Dec 1972 [27 Dec 1971 28 Dec 1971] 58776/76 Heading G3T [Also in Divisions G5 and H4] A display device, e.g. for an electronic wrist watch, comprises a polarizer 45 in contact with a transparent ferro-electric substance 47, and a reflector 46. Light incident on 45 is circularly polarized and the hand of polarization reversed on reflection at 46, application of an electric field to the ferro-electric substance 47 controlling the passage of light back through the polarizer 45. In a modification Fig. 7 (not shown) a reflector (63) and ferro-electric segments (not shown) are disposed between two crossed polarizers (62, 64) of different areas, light traversing the elements (62... 64) in sequence. An electric field is selectively applied to one or more of the segments.
GB5877672A 1971-12-27 1972-12-20 Display device Expired GB1407299A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP47002868A JPS4871674A (en) 1971-12-27 1971-12-27
JP275172A JPS5525676B2 (en) 1971-12-28 1971-12-28

Publications (1)

Publication Number Publication Date
GB1407299A true GB1407299A (en) 1975-09-24

Family

ID=26336223

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4716274A Expired GB1407300A (en) 1971-12-27 1972-12-20 Display device
GB5877672A Expired GB1407299A (en) 1971-12-27 1972-12-20 Display device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB4716274A Expired GB1407300A (en) 1971-12-27 1972-12-20 Display device

Country Status (4)

Country Link
US (1) US3854278A (en)
CH (2) CH580839B5 (en)
DE (1) DE2263531B2 (en)
GB (2) GB1407300A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH607604B (en) * 1973-09-27 Suisse Horlogerie SOLID CRYSTAL MEMORY DISPLAY DEVICE FOR ELECTRONIC WATCH PART.
US3943699A (en) * 1975-01-13 1976-03-16 Motorola, Inc. Ultra thin electronic watch
US3945195A (en) * 1975-01-13 1976-03-23 Motorola, Inc. Ultra thin electronic watch with improved visibility display
US4043116A (en) * 1976-01-29 1977-08-23 Metallprodukte A.G. Grenchen Timepiece comprising a flat display device exposed through an opening in a case
US4470045A (en) * 1982-05-05 1984-09-04 Litton Systems, Inc. Diffusion-lighted magneto-optic display
JPS60117215A (en) * 1983-11-29 1985-06-24 Sharp Corp Liquid crystal display device
US7604396B1 (en) * 2004-08-30 2009-10-20 Don Karterman Wristwatch with movable movement case

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540209A (en) * 1968-07-31 1970-11-17 Timex Corp Horological time display
US3695747A (en) * 1971-06-04 1972-10-03 Bell Telephone Labor Inc Optical transmission system including strain-biased electrooptic ceramic devices

Also Published As

Publication number Publication date
US3854278A (en) 1974-12-17
DE2263531B2 (en) 1978-04-20
DE2263531A1 (en) 1973-07-05
GB1407300A (en) 1975-09-24
CH580839B5 (en) 1976-10-15
CH1889872A4 (en) 1976-01-30

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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