GB2008847A - Fluorescent display device - Google Patents

Fluorescent display device

Info

Publication number
GB2008847A
GB2008847A GB7840074A GB7840074A GB2008847A GB 2008847 A GB2008847 A GB 2008847A GB 7840074 A GB7840074 A GB 7840074A GB 7840074 A GB7840074 A GB 7840074A GB 2008847 A GB2008847 A GB 2008847A
Authority
GB
United Kingdom
Prior art keywords
anode segments
grid
insulated
display
display device
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
GB7840074A
Other versions
GB2008847B (en
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.)
Nippon Electric Kagoshima Ltd
Original Assignee
Nippon Electric Kagoshima 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 Nippon Electric Kagoshima Ltd filed Critical Nippon Electric Kagoshima Ltd
Publication of GB2008847A publication Critical patent/GB2008847A/en
Application granted granted Critical
Publication of GB2008847B publication Critical patent/GB2008847B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/15—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with ray or beam selectively directed to luminescent anode segments
    • 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
    • G04G9/04—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 by controlling light sources, e.g. electroluminescent diodes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

A fluorescent display device includes a hot cathode, a grid, and a plurality of fluorescent anode segments which are disposed on an insulating substrate and which extend radially from a point and are insulated from another to provide, for example, a time display of analogue type. A plurality of anode segments extend radially from a predetermined point, the anode segments being insulated from another. For use in or as a timepiece, a grid member (35) comprises first and second partial grids (36) and (37) insulated from each other and juxtaposed to radially inner and outer portions of the anode segments, respectively. The second grid (37) is put into operation in a time- division fashion while the first grid (36) is rendered continuously operative. The display of the minute hand is given by simultaneously energizing the first and second grids (36) and (37) together with one of the anode segments while for display of the hour hand, only the first grid (36) and one of the anode segments are energised. <IMAGE>
GB7840074A 1977-10-12 1978-10-11 Fluorescent display device Expired GB2008847B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12286377A JPS5455369A (en) 1977-10-12 1977-10-12 Fluorescent display tube

Publications (2)

Publication Number Publication Date
GB2008847A true GB2008847A (en) 1979-06-06
GB2008847B GB2008847B (en) 1982-06-30

Family

ID=14846490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7840074A Expired GB2008847B (en) 1977-10-12 1978-10-11 Fluorescent display device

Country Status (2)

Country Link
JP (1) JPS5455369A (en)
GB (1) GB2008847B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131225A (en) * 1982-11-18 1984-06-13 Secr Defence Flood gun crt information display device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5613358U (en) * 1979-07-09 1981-02-04
JPS5619853A (en) * 1979-07-25 1981-02-24 Nec Corp Analog clock fluorescent display panel
JPS56109265U (en) * 1980-01-25 1981-08-24
JPS60140352U (en) * 1984-01-13 1985-09-17 日本電気株式会社 fluorescent display panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131225A (en) * 1982-11-18 1984-06-13 Secr Defence Flood gun crt information display device

Also Published As

Publication number Publication date
JPS5455369A (en) 1979-05-02
GB2008847B (en) 1982-06-30
JPS6226548B2 (en) 1987-06-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971011