JPS5340562A - Display device of electronic watch - Google Patents

Display device of electronic watch

Info

Publication number
JPS5340562A
JPS5340562A JP11505476A JP11505476A JPS5340562A JP S5340562 A JPS5340562 A JP S5340562A JP 11505476 A JP11505476 A JP 11505476A JP 11505476 A JP11505476 A JP 11505476A JP S5340562 A JPS5340562 A JP S5340562A
Authority
JP
Japan
Prior art keywords
display device
electronic watch
cell
enhanced
liquid crystal
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.)
Granted
Application number
JP11505476A
Other languages
Japanese (ja)
Other versions
JPS5821234B2 (en
Inventor
Tadashi Hanaoka
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP51115054A priority Critical patent/JPS5821234B2/en
Priority to GB31610/77A priority patent/GB1540562A/en
Priority to US05/819,432 priority patent/US4208869A/en
Publication of JPS5340562A publication Critical patent/JPS5340562A/en
Publication of JPS5821234B2 publication Critical patent/JPS5821234B2/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 
    • G02F1/13—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
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs

Landscapes

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

Abstract

PURPOSE:Sufficient lighting effect is enhanced through the use of a thin surface light source by integrally constituting a liquid crystal cell and an electroluminescence cell.
JP51115054A 1976-07-31 1976-09-25 Electronic clock display device Expired JPS5821234B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP51115054A JPS5821234B2 (en) 1976-09-25 1976-09-25 Electronic clock display device
GB31610/77A GB1540562A (en) 1976-07-31 1977-07-27 Illumination device for electronic timepiece
US05/819,432 US4208869A (en) 1976-07-31 1977-07-27 Illumination device for electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51115054A JPS5821234B2 (en) 1976-09-25 1976-09-25 Electronic clock display device

Publications (2)

Publication Number Publication Date
JPS5340562A true JPS5340562A (en) 1978-04-13
JPS5821234B2 JPS5821234B2 (en) 1983-04-27

Family

ID=14653026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51115054A Expired JPS5821234B2 (en) 1976-07-31 1976-09-25 Electronic clock display device

Country Status (1)

Country Link
JP (1) JPS5821234B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664070U (en) * 1979-10-19 1981-05-29
JPS606133U (en) * 1983-06-24 1985-01-17 株式会社学習研究社 overhead projector
JPS63118539A (en) * 1986-11-06 1988-05-23 Matsushita Electric Ind Co Ltd Heat-cooking apparatus
JPS63118538A (en) * 1986-11-06 1988-05-23 Matsushita Electric Ind Co Ltd Device for operating heat-cooling apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144999A (en) * 1976-05-13 1977-12-02 Ebauches Sa Passive optooelectric indicator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144999A (en) * 1976-05-13 1977-12-02 Ebauches Sa Passive optooelectric indicator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664070U (en) * 1979-10-19 1981-05-29
JPS6125012Y2 (en) * 1979-10-19 1986-07-28
JPS606133U (en) * 1983-06-24 1985-01-17 株式会社学習研究社 overhead projector
JPS63118539A (en) * 1986-11-06 1988-05-23 Matsushita Electric Ind Co Ltd Heat-cooking apparatus
JPS63118538A (en) * 1986-11-06 1988-05-23 Matsushita Electric Ind Co Ltd Device for operating heat-cooling apparatus

Also Published As

Publication number Publication date
JPS5821234B2 (en) 1983-04-27

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