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JPS55104784A - Liquid crystal watch - Google Patents

Liquid crystal watch

Info

Publication number
JPS55104784A
JPS55104784A JP1260079A JP1260079A JPS55104784A JP S55104784 A JPS55104784 A JP S55104784A JP 1260079 A JP1260079 A JP 1260079A JP 1260079 A JP1260079 A JP 1260079A JP S55104784 A JPS55104784 A JP S55104784A
Authority
JP
Japan
Prior art keywords
analog
indication
picture elements
indications
digital
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
JP1260079A
Other languages
Japanese (ja)
Inventor
Shuji Maezawa
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 JP1260079A priority Critical patent/JPS55104784A/en
Priority to GB8001114A priority patent/GB2046958B/en
Priority to DE19803003956 priority patent/DE3003956A1/en
Priority to FR8002362A priority patent/FR2448743A1/en
Publication of JPS55104784A publication Critical patent/JPS55104784A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08
    • G04G9/0094—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08 using light valves, e.g. liquid crystals
    • 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
    • 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
    • G04G9/062—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 using multiplexing techniques

Landscapes

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

Abstract

PURPOSE: To always automatically synchronize digital indication with analog indication on a liquid crystal watch by using a liquid crystal indicator on the analog indication and employing similar drive method for both digital and analog indications.
CONSTITUTION: An analog indicator has five transparent electrodes called "line electrodes" on one surface of both-side electrodes inside the base plate, and twentyfour transparent electrodes called "block electrodes" on the other surface thereof. The indicator thus incorporates 60 picture elements of inner layer, 60 picture elements of outer layer, totally to 120 picture elements in superimposed position to each other. The analog hour indication uses one of the picture elements on the inner periphery, the minute indication uses respective picture elements on the inner and outer peripheries, and the second incication uses the one picture element on the outer periphery. Both the analog and the digital indications are driven by the similar signal upon multiplex drive. Both indications, for example, indicates 10 o'clock, 24 minutes, 35 seconds a.m. Even if the indication is switched to other function by a switch operation, the latter can be again switched back to the original indication. At that time both the analog and digital indications synchronize each other.
COPYRIGHT: (C)1980,JPO&Japio
JP1260079A 1979-02-06 1979-02-06 Liquid crystal watch Pending JPS55104784A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1260079A JPS55104784A (en) 1979-02-06 1979-02-06 Liquid crystal watch
GB8001114A GB2046958B (en) 1979-02-06 1980-01-14 Electronic timepiece
DE19803003956 DE3003956A1 (en) 1979-02-06 1980-02-04 WATCH WITH ANALOG AND DIGITAL LIQUID CRYSTAL DISPLAY
FR8002362A FR2448743A1 (en) 1979-02-06 1980-02-04 LIQUID CRYSTAL WATCH COMPRISING A DIGITAL DISPLAY AND AN ANALOG DISPLAY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1260079A JPS55104784A (en) 1979-02-06 1979-02-06 Liquid crystal watch

Publications (1)

Publication Number Publication Date
JPS55104784A true JPS55104784A (en) 1980-08-11

Family

ID=11809837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1260079A Pending JPS55104784A (en) 1979-02-06 1979-02-06 Liquid crystal watch

Country Status (4)

Country Link
JP (1) JPS55104784A (en)
DE (1) DE3003956A1 (en)
FR (1) FR2448743A1 (en)
GB (1) GB2046958B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204429B (en) * 1987-04-24 1991-09-04 Salim Emile Kahil Timepiece.
GB2213965A (en) * 1987-12-23 1989-08-23 Goro Saito Analog display on an electronic timepiece
GB2350716A (en) * 1999-06-02 2000-12-06 Promotec Ltd Digital time display has additional graphics

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419538A1 (en) * 1978-03-07 1979-10-05 Suwa Seikosha Kk ANALOGUE WATCH WITH LIQUID CRYSTALS

Also Published As

Publication number Publication date
GB2046958B (en) 1983-03-09
DE3003956A1 (en) 1980-08-07
FR2448743A1 (en) 1980-09-05
GB2046958A (en) 1980-11-19

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