GB1437862A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
GB1437862A
GB1437862A GB1833274A GB1833274A GB1437862A GB 1437862 A GB1437862 A GB 1437862A GB 1833274 A GB1833274 A GB 1833274A GB 1833274 A GB1833274 A GB 1833274A GB 1437862 A GB1437862 A GB 1437862A
Authority
GB
United Kingdom
Prior art keywords
plate
ceramic
electrodes
electric field
light
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
GB1833274A
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
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB1437862A publication Critical patent/GB1437862A/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
    • 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
    • G02F1/0551—Constructional details
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/04—Mounting of electronic components

Landscapes

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

Abstract

1437862 Electronic watches SUWA SEIKOSHA KK 26 April 1974 [16 May 1973] 18332/74 Heading G3T [Also in Division G5] An electronic timepeice has a solid state display in the form of a transmissive ceramic (PLZT) mounted on one side of a substrate, a driving circuit therefore being mounted on the other. The ceramic contains, titanium zirconium and either lanthanum or hafnium, and exhibits light scattering or double refraction when subjected to an electric field. As shown Fig. 1, embedded in a transparent resin block 5 is a ceramic plate 1 on a metal frame 2, a linear polarizing plate 3 and a light reflecting plate 4. Fig. 2 shows an arrangement of electrodes in 7-bar display form, and which may be mounted on one or both surfaces of the ceramic plate 1. Incident light 6 passes through the polarizing plate 3 and plate 1 and is reflected by the plate 4 back through plates 1, 3. When an electric field is applied to the electrodes the plate 1 exhibits double refraction of approximately <SP>#</SP>/ 4 , and plane polarized light emanating from plate 3 will have its plane of polarization rotated through 90 degrees by the time it is reflected back to plate 3 and so will not pass therethrough. Consequently the display will appear dark when viewed in the direction of incident light 6.
GB1833274A 1973-05-16 1974-04-26 Electronic timepiece Expired GB1437862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48053674A JPS506369A (en) 1973-05-16 1973-05-16

Publications (1)

Publication Number Publication Date
GB1437862A true GB1437862A (en) 1976-06-03

Family

ID=12949362

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1833274A Expired GB1437862A (en) 1973-05-16 1974-04-26 Electronic timepiece

Country Status (4)

Country Link
US (1) US3914932A (en)
JP (1) JPS506369A (en)
DE (1) DE2423808B2 (en)
GB (1) GB1437862A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060971A (en) * 1974-09-10 1977-12-06 Time Computer, Inc. Solid state watch with inertial switch
US4026103A (en) * 1974-12-02 1977-05-31 Citizen Watch Co., Ltd. Electronic timepiece with digital display means
US4092820A (en) * 1975-03-25 1978-06-06 Citizen Watch Company Limited Electronic timepiece
US4033110A (en) * 1975-12-22 1977-07-05 Bulova Watch Company, Inc. Solid-state electronic watch assembly
JPS55135877U (en) * 1979-03-20 1980-09-27
US4496775A (en) * 1982-04-26 1985-01-29 International Flavors & Fragrances Inc. 1,2,3,3,5,6-Hexamethyl-bicyclo[2.2.2]-oct-5-en-2-ol, process for producing same, intermediates useful in said process and organoleptic uses of same
JPS6147187U (en) * 1984-09-01 1986-03-29 住友電気工業株式会社 plastic pipe connections

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427797A (en) * 1966-12-12 1969-02-18 Kenjiro Kimura Timepiece using a solar battery as the power source
US3505804A (en) * 1968-04-23 1970-04-14 Rca Corp Solid state clock
US3540209A (en) * 1968-07-31 1970-11-17 Timex Corp Horological time display
US3612656A (en) * 1969-06-23 1971-10-12 Bell Telephone Labor Inc Liquid crystal device with lower means located behind the liquid crystal cell
US3747322A (en) * 1971-05-20 1973-07-24 Hmw Industries Light control for timing displays
US3695747A (en) * 1971-06-04 1972-10-03 Bell Telephone Labor Inc Optical transmission system including strain-biased electrooptic ceramic devices
US3757510A (en) * 1972-07-03 1973-09-11 Hughes Aircraft Co High frequency electronic watch with low power dissipation

Also Published As

Publication number Publication date
US3914932A (en) 1975-10-28
DE2423808B2 (en) 1978-05-11
JPS506369A (en) 1975-01-23
DE2423808A1 (en) 1974-12-12

Similar Documents

Publication Publication Date Title
US3864905A (en) Horological instrument incorporating means for illuminating a liquid crystal display
US3540209A (en) Horological time display
US4488818A (en) Watch with an analog display device the dial of which is formed by a liquid crystal display cell
JP3405547B2 (en) clock
US3838909A (en) Ambient illuminations system for liquid crystal display
US6515942B2 (en) Display assembly including two superposed display devices
GB1478931A (en) Liquid crystal display device
CH608330B (en) ELECTRONIC WATCH PART, ESPECIALLY ELECTRONIC BRACELET WATCH.
WO1999004322A1 (en) Watch
GB1525520A (en) Electro-optical display device using a liquid crystal cel
JP3490096B2 (en) LCD panel
JP2004271259A (en) Clock module
GB1437862A (en) Electronic timepiece
GB1479779A (en) Liquid crystal display wrist watch
JPH04238321A (en) Liquid crystal display device
GB1163976A (en) Photoconductive Electro-Optic Transducer
JP3637307B2 (en) Clock with power generation function
GB1476794A (en) Display device
US4470045A (en) Diffusion-lighted magneto-optic display
ES8606951A1 (en) Liquid crystal display.
GB1407300A (en) Display device
KR100334658B1 (en) Watch
EP1008894A1 (en) Timepiece
KR20020003428A (en) Display picture with mirror
JPH08201547A (en) Electronic apparatus provided with liquid-crystal display device

Legal Events

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