GB1377620A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
GB1377620A
GB1377620A GB5487271A GB5487271A GB1377620A GB 1377620 A GB1377620 A GB 1377620A GB 5487271 A GB5487271 A GB 5487271A GB 5487271 A GB5487271 A GB 5487271A GB 1377620 A GB1377620 A GB 1377620A
Authority
GB
United Kingdom
Prior art keywords
display
electrolyte
counter electrode
state
layer
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
GB5487271A
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 US00149423A external-priority patent/US3839857A/en
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB1377620A publication Critical patent/GB1377620A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G04G9/0041—Illumination devices
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/02—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques
    • G04G9/06—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/1514—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 an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
    • G02F1/1523—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 an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising inorganic material
    • G02F1/1524—Transition metal compounds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electric Clocks (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

1377620 Matrix displays AMERICAN CYANAMID CO 25 Nov 1971 [12 Jan 1971 3 June 1971] 54872/71 Heading G5C [Also in Division G3] An electronic timepiece comprises a timebase oscillator, a divider and driving circuit, and a display using persistent electrochromic material. Application of current of one polarity to a display element produces a bleached state while the opposite polarity produces a coloured state. Each state is persistent so that continuous energization is not required. The display may be of digital form using bar or dot matrices. A display element typically comprises a support 2 of glass having a conductive film thereon, a vacuum deposited electrochromic layer 1, e.g. of tungsten oxide, an electrolyte and separator layer 3, e.g. of sulphuric acid, and a counter electrode 4. The counter electrode may be of gold or of the same material as the layer 1. A number of other materials for the electrolyte and counter electrode are suggested. The display may be integrated with a watch glass as at 29a, Fig. 9, and may use transmitted rather than reflected light. The electrolyte must then be transparent and a light source 30 is provided in the display unit; the counter electrodes 31, Fig. 13, are arranged in the same plane as the display bars 32. A display device (37, Fig. 15, not shown) may be positioned in an encapsulating plastics watch case (38) in front of a battery (35), the electronics being in a block (36) behind the battery. Plug connectors may be provided between the parts.
GB5487271A 1971-01-12 1971-11-25 Electronic timepiece Expired GB1377620A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10588371A 1971-01-12 1971-01-12
US00149423A US3839857A (en) 1971-06-03 1971-06-03 Electrochromic information displays

Publications (1)

Publication Number Publication Date
GB1377620A true GB1377620A (en) 1974-12-18

Family

ID=26803050

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5487271A Expired GB1377620A (en) 1971-01-12 1971-11-25 Electronic timepiece

Country Status (8)

Country Link
CA (1) CA958476A (en)
CH (3) CH40172A4 (en)
DE (1) DE2201104C2 (en)
FR (1) FR2121801B1 (en)
GB (1) GB1377620A (en)
HK (1) HK28078A (en)
IT (1) IT948135B (en)
NL (1) NL176498C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA999388A (en) * 1972-12-07 1976-11-02 American Cyanamid Company Electrochromic information display for telephones
CH594263A5 (en) * 1975-11-29 1977-12-30 Ebauches Sa
DE2832999A1 (en) * 1977-07-29 1979-02-15 Sharp Kk ELECTROCHROME DISPLAY DEVICE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR32671B (en) * 1966-02-25 1967-08-02 American Cyanamid Company ELECTRO - OPTICAL DEVICES.
US3451741A (en) * 1966-06-15 1969-06-24 Du Pont Electrochromic device
US3521941A (en) * 1967-02-07 1970-07-28 American Cyanamid Co Electro-optical device having variable optical density
US3485033A (en) * 1968-03-19 1969-12-23 Corning Glass Works Electronic timepiece having light beam adjustment means
US3540209A (en) * 1968-07-31 1970-11-17 Timex Corp Horological time display

Also Published As

Publication number Publication date
NL7200053A (en) 1972-07-14
HK28078A (en) 1978-06-09
NL176498C (en) 1985-04-16
NL176498B (en) 1984-11-16
DE2201104A1 (en) 1972-09-07
IT948135B (en) 1973-05-30
DE2201104C2 (en) 1983-12-15
CH40172A4 (en) 1974-10-31
CA958476A (en) 1974-11-26
FR2121801A1 (en) 1972-08-25
CH558004A (en) 1975-01-15
CH561932A (en) 1975-05-15
FR2121801B1 (en) 1979-04-27

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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