US3906269A - Inert intermediate adhesive layer for a fluorescent substance in a fluorescent electronic tube - Google Patents

Inert intermediate adhesive layer for a fluorescent substance in a fluorescent electronic tube Download PDF

Info

Publication number
US3906269A
US3906269A US056818A US5681870A US3906269A US 3906269 A US3906269 A US 3906269A US 056818 A US056818 A US 056818A US 5681870 A US5681870 A US 5681870A US 3906269 A US3906269 A US 3906269A
Authority
US
United States
Prior art keywords
fluorescent
fluorescent substance
electrons
electronic tube
layer
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.)
Expired - Lifetime
Application number
US056818A
Other languages
English (en)
Inventor
Mikiharu Tanji
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.)
Noritake Itron Corp
Original Assignee
Ise Electronics Corp
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 Ise Electronics Corp filed Critical Ise Electronics Corp
Application granted granted Critical
Publication of US3906269A publication Critical patent/US3906269A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/24—Supports for luminescent material

Definitions

  • ABSTRACT In a fluorescent electronic tube of the type wherein a layer of fluorescent substance is coated upon an anode electrode or an insulator and is excited to luminesce by electrons from a cathode electrode, there is provided an intermediate layer between the layer of fluorescent substance and the anode electrode or insulator.
  • the intermediate layer is composed of a metallic conductor or a semiconductor material which is inert to the fluorescent substance and does not interfere with the flow of electrons 1 Claim, 3 Drawing Figures PATENTEI] SEP I 6 I975 2 PRIOR ART FIG.
  • FIG. 1 A first figure.
  • This invention relates to a fluorescent electronic tube such as a fluorescent display tube or a synchronism indicating tube wherein a fluorescent layer coated on a metal anode electrode or an insulator is caused to luminesce by the excitation of electrons emanated from a cathode electrode disposed in opposed relationship with the anode electrode or insulator, and more particularly to the improvements of its electrode construction.
  • a prior fluorescent display tube is typically constructed as shown in FIGS. 1 and 2 of the accompanying drawing. More particularly, it comprises a glass envelope 1 similar to that utilized in a conventional electronic tube and a vertical insulating substrate 2 of ceramic or mica supported in the envelope by a pedestal 3 and horizontal mica plates 4. Discrete twelve letter display electrodes or anode electrodes 5 each coated with a layer 6 of fluorescent substance are mounted on the front surface of the insulating substrate to form desired letters or numerals when they are energized selectively. Any one of well known fluorescent materials such as ZnS Ag, (emanating blue colour), ZnS Cu (emanating green colour), Zn (PO Mn (emanating red colour) may be selected.
  • Lead wires 7 for respective electrodes are inserted through the substrate from the rear surface thereof, opposite ends of lead wires being connected to respective terminal conductors 8 extending through the envelope 1.
  • a cathode electrode 9 in the form of a filament of 30 to 50 microns diameter is mounted in front of the anode electrodes 5 by upper and lower supporting rods 10 and 11. Opposite terminals of the cathode electrodes are also connected to appropriate terminal conductors 8.
  • FIG. 1 shows a longitudinal section of a prior art fluorescent display tube
  • FIG. 2 shows a side view, partly in section of the tube shown in FIG. 1
  • FIG. 3 is an enlarged perspective view of essential component parts of a fluorescent electronic tube constructed according to the teaching of this invention.
  • a cathode electrode 22 comprises a filament 21, and a layer of fluorescent substance 23 is coated on an anode electrode of metal 25 through an intermediate layer 24.
  • electrons 26 excite the layer of fluorescent substance 23 to emanate fluorescence 27.
  • the intermediate layer 24 from electroconductor or semiconductor material so as not to interfere with the flow of electrons when energizing the fluorescent substance 23 to fluoresce. Further, the material should be stable or inert to the fluorescent substance.
  • this invention can increase the brightness of fluorescent substance by simple means whereby to provide an efficient display tube or synchronism indicating tube capable of operating at a low operating voltage.
  • a fluorescent electronic tube wherein a layer of fluorescent substance coated over a supporting member is excited to luminesce by electrons supplied from conduct electrons so as not to interfere with the flow of electrons when the fluorescent substance is energized to fluoresce, and which comprises a mixture of powdered carbon and water glass.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
US056818A 1969-07-22 1970-07-21 Inert intermediate adhesive layer for a fluorescent substance in a fluorescent electronic tube Expired - Lifetime US3906269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1969069158U JPS4928458Y1 (enrdf_load_stackoverflow) 1969-07-22 1969-07-22

Publications (1)

Publication Number Publication Date
US3906269A true US3906269A (en) 1975-09-16

Family

ID=13394585

Family Applications (1)

Application Number Title Priority Date Filing Date
US056818A Expired - Lifetime US3906269A (en) 1969-07-22 1970-07-21 Inert intermediate adhesive layer for a fluorescent substance in a fluorescent electronic tube

Country Status (3)

Country Link
US (1) US3906269A (enrdf_load_stackoverflow)
JP (1) JPS4928458Y1 (enrdf_load_stackoverflow)
FR (1) FR2055426A5 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045702A (en) * 1975-06-18 1977-08-30 Tokyo Shibaura Electric Co., Ltd. Fluorescent character indicating tube
US4084114A (en) * 1975-07-11 1978-04-11 Narumi China Corporation Substrate assembly for a luminescent display panel wherein graphite powder is bound into segmented electrodes by glass containing zinc oxide
US4152623A (en) * 1975-05-12 1979-05-01 Dai Nippon Toryo Co., Ltd. Low-velocity electron excited fluorescent display device
US4196227A (en) * 1978-04-20 1980-04-01 Wagner Electric Corporation Method of forming carbon anodes in multidigit fluorescent display devices
US4208613A (en) * 1975-06-30 1980-06-17 Dai Nippon Toryo Co., Ltd. Low-velocity electron excited fluorescent display device
US4208612A (en) * 1975-06-30 1980-06-17 Dai Nippon Toryo Co., Ltd. Low-velocity electron excited fluorescent display device
US6252342B1 (en) * 1997-11-29 2001-06-26 Orion Electric Co., Ltd. Impregnated cathode structure for a CRT and its manufacturing method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525679A (en) * 1964-05-05 1970-08-25 Westinghouse Electric Corp Method of electrodepositing luminescent material on insulating substrate
US3560784A (en) * 1968-07-26 1971-02-02 Sigmatron Inc Dark field, high contrast light emitting display
US3567984A (en) * 1967-04-27 1971-03-02 M O Valve Co Ltd Cathode-ray storage tube having semicontinuous phosphor layer on continuous electron bombardment induced conductivity layer
US3571655A (en) * 1967-12-12 1971-03-23 Sharp Kk Electronic indicia display system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525679A (en) * 1964-05-05 1970-08-25 Westinghouse Electric Corp Method of electrodepositing luminescent material on insulating substrate
US3567984A (en) * 1967-04-27 1971-03-02 M O Valve Co Ltd Cathode-ray storage tube having semicontinuous phosphor layer on continuous electron bombardment induced conductivity layer
US3571655A (en) * 1967-12-12 1971-03-23 Sharp Kk Electronic indicia display system
US3560784A (en) * 1968-07-26 1971-02-02 Sigmatron Inc Dark field, high contrast light emitting display

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152623A (en) * 1975-05-12 1979-05-01 Dai Nippon Toryo Co., Ltd. Low-velocity electron excited fluorescent display device
US4045702A (en) * 1975-06-18 1977-08-30 Tokyo Shibaura Electric Co., Ltd. Fluorescent character indicating tube
US4208613A (en) * 1975-06-30 1980-06-17 Dai Nippon Toryo Co., Ltd. Low-velocity electron excited fluorescent display device
US4208612A (en) * 1975-06-30 1980-06-17 Dai Nippon Toryo Co., Ltd. Low-velocity electron excited fluorescent display device
US4084114A (en) * 1975-07-11 1978-04-11 Narumi China Corporation Substrate assembly for a luminescent display panel wherein graphite powder is bound into segmented electrodes by glass containing zinc oxide
US4196227A (en) * 1978-04-20 1980-04-01 Wagner Electric Corporation Method of forming carbon anodes in multidigit fluorescent display devices
FR2435881A1 (fr) * 1978-04-20 1980-04-04 Wagner Electric Corp Procede pour former des anodes en carbone dans des dispositifs d'affichage fluorescents a plusieurs chiffres
US6252342B1 (en) * 1997-11-29 2001-06-26 Orion Electric Co., Ltd. Impregnated cathode structure for a CRT and its manufacturing method

Also Published As

Publication number Publication date
FR2055426A5 (enrdf_load_stackoverflow) 1971-05-07
JPS4928458Y1 (enrdf_load_stackoverflow) 1974-08-02

Similar Documents

Publication Publication Date Title
US3838307A (en) Color plasma display
JP2006179467A (ja) 光電素子、これを用いたランプ及びディスプレイパネル
JP2008177174A (ja) 蛍光層を有するプラズマ画像スクリーン
US3906269A (en) Inert intermediate adhesive layer for a fluorescent substance in a fluorescent electronic tube
US3424935A (en) Harness construction for metal arc type lamp
US2053879A (en) Discharge tube
US2121356A (en) Electron tube
US3897614A (en) Method for manufacturing a segmented raised anode fluorescent symbol display tube
US3737705A (en) Luminescent alphanumeric indicating tube having plural fluorescent layers
US2955221A (en) Cold cathode light source
US5049785A (en) Two contact, AC-operated negative glow fluorescent lamp
US3570000A (en) Gas-filled cold-cathode indicator display tube
KR910007646Y1 (ko) 칼라 플라즈마 표시소자
Choi et al. The characteristics of plasma display with the cylindrical hollow cathode
US5006762A (en) Negative glow fluorescent lamp having discharge barrier
JP5363584B2 (ja) 蛍光ランプ及び画像表示装置
JP2006335967A (ja) 表示装置用蛍光体および電界放出型表示装置
US3814969A (en) Gas discharge tube with phosphor coating and elongate electrodes
KR20050109512A (ko) 저전압ㆍ고전류밀도용 녹색 발광 형광체와 그것을 이용한전계 방출형 표시 장치
JP2008156580A (ja) 発光素子および電界放出型表示装置
JP2543377B2 (ja) 螢光表示管
JPS5912704B2 (ja) 多色発光螢光体
KR100658668B1 (ko) 프로젝션 텔레비젼용 음극선관
JP2004339293A (ja) 低電圧・高電流密度用青色発光蛍光体とそれを用いた電界放出型表示装置
KR890001433B1 (ko) 형광 표시관의 봉착방법