JPS52128178A - Electronic clock - Google Patents

Electronic clock

Info

Publication number
JPS52128178A
JPS52128178A JP4518676A JP4518676A JPS52128178A JP S52128178 A JPS52128178 A JP S52128178A JP 4518676 A JP4518676 A JP 4518676A JP 4518676 A JP4518676 A JP 4518676A JP S52128178 A JPS52128178 A JP S52128178A
Authority
JP
Japan
Prior art keywords
electronic clock
liquid crystal
lengthen
life
preventing
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
JP4518676A
Other languages
Japanese (ja)
Other versions
JPS5846718B2 (en
Inventor
Hiroyuki Chihara
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP51045186A priority Critical patent/JPS5846718B2/en
Publication of JPS52128178A publication Critical patent/JPS52128178A/en
Publication of JPS5846718B2 publication Critical patent/JPS5846718B2/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
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Indicating Measured Values (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE:To lengthen the life of liquid crystal by means of preventing DC drive of of liquid crystal display measure.
JP51045186A 1976-04-20 1976-04-20 electronic clock Expired JPS5846718B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51045186A JPS5846718B2 (en) 1976-04-20 1976-04-20 electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51045186A JPS5846718B2 (en) 1976-04-20 1976-04-20 electronic clock

Publications (2)

Publication Number Publication Date
JPS52128178A true JPS52128178A (en) 1977-10-27
JPS5846718B2 JPS5846718B2 (en) 1983-10-18

Family

ID=12712230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51045186A Expired JPS5846718B2 (en) 1976-04-20 1976-04-20 electronic clock

Country Status (1)

Country Link
JP (1) JPS5846718B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125093A (en) * 1982-01-22 1983-07-25 株式会社日立製作所 Liquid crystal driving circuit
JPS61243494A (en) * 1985-04-22 1986-10-29 株式会社日立製作所 Planar display unit
WO1991020075A1 (en) * 1990-06-18 1991-12-26 Seiko Epson Corporation Flat displaying device and device for driving displaying elements
US5563624A (en) * 1990-06-18 1996-10-08 Seiko Epson Corporation Flat display device and display body driving device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125093A (en) * 1982-01-22 1983-07-25 株式会社日立製作所 Liquid crystal driving circuit
JPH05713B2 (en) * 1982-01-22 1993-01-06 Hitachi Ltd
JPS61243494A (en) * 1985-04-22 1986-10-29 株式会社日立製作所 Planar display unit
WO1991020075A1 (en) * 1990-06-18 1991-12-26 Seiko Epson Corporation Flat displaying device and device for driving displaying elements
US5563624A (en) * 1990-06-18 1996-10-08 Seiko Epson Corporation Flat display device and display body driving device
US5903260A (en) * 1990-06-18 1999-05-11 Seiko Epson Corporation Flat device and display driver with on/off power controller used to prevent damage to the LCD
USRE39236E1 (en) 1990-06-18 2006-08-15 Seiko Epson Corporation Flat panel device and display driver with on/off power controller used to prevent damage to the LCD
USRE40504E1 (en) 1990-06-18 2008-09-16 Seiko Epson Corporation Display and display driver with on/off power controller used to prevent damage to the display

Also Published As

Publication number Publication date
JPS5846718B2 (en) 1983-10-18

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