JPS5284777A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5284777A
JPS5284777A JP8253176A JP8253176A JPS5284777A JP S5284777 A JPS5284777 A JP S5284777A JP 8253176 A JP8253176 A JP 8253176A JP 8253176 A JP8253176 A JP 8253176A JP S5284777 A JPS5284777 A JP S5284777A
Authority
JP
Japan
Prior art keywords
liquid crystal
display device
crystal display
electronic watch
prolonging
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.)
Pending
Application number
JP8253176A
Other languages
Japanese (ja)
Inventor
Shigeru Morokawa
Katsuo Nishimura
Ryuichi Maruka
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 JP8253176A priority Critical patent/JPS5284777A/en
Publication of JPS5284777A publication Critical patent/JPS5284777A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:A liquid crystal display device is operated over a wider temperature range and prolonging of its service life is made possible by providing a temperature sensing element within a drive circuit and changing the waveform of the voltage applied to the liquid crystal display device of an a.c. drive system according to temperature changes.
JP8253176A 1976-07-13 1976-07-13 Electronic watch Pending JPS5284777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8253176A JPS5284777A (en) 1976-07-13 1976-07-13 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8253176A JPS5284777A (en) 1976-07-13 1976-07-13 Electronic watch

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP47001772A Division JPS5217397B2 (en) 1971-12-24 1971-12-24

Publications (1)

Publication Number Publication Date
JPS5284777A true JPS5284777A (en) 1977-07-14

Family

ID=13777080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8253176A Pending JPS5284777A (en) 1976-07-13 1976-07-13 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5284777A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256887A (en) * 1985-09-05 1987-03-12 Zenkichi Kishimoto Timepiece equipped with thermometer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256887A (en) * 1985-09-05 1987-03-12 Zenkichi Kishimoto Timepiece equipped with thermometer

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