JPS5828166A - Multicolor fluorescent display tube - Google Patents

Multicolor fluorescent display tube

Info

Publication number
JPS5828166A
JPS5828166A JP12699281A JP12699281A JPS5828166A JP S5828166 A JPS5828166 A JP S5828166A JP 12699281 A JP12699281 A JP 12699281A JP 12699281 A JP12699281 A JP 12699281A JP S5828166 A JPS5828166 A JP S5828166A
Authority
JP
Japan
Prior art keywords
cathode
display tube
electron
grid
fluorescent display
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
JP12699281A
Other languages
Japanese (ja)
Inventor
Shigeki Kikuta
菊田　繁樹
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
Priority to JP12699281A priority Critical patent/JPS5828166A/en
Publication of JPS5828166A publication Critical patent/JPS5828166A/en
Pending 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

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To prevent any deterioration of a cathode caused by S or Cl, which is scattered from phosphor layers during the time when emission display is carried out, by coating a partial or the entire surface of a grid with an electron- discharging matter so as to make the surface of the cathode to be activated. CONSTITUTION:Phosphor layers 2, which are prepared by mixing a conductive member into blue, red and orange phosphors, are provided on the surfaces of segment-like anodes 1 which are used for a multicolor fluorescent display tube. In addition, a grid 3 located between the anodes 1 and a cathode 5 is coated with an electron-discharging matter 4 such as (Ba, Sr, Ca)O, (Ba, Sr)O, BaO or Ba. Therefore, electrons sent from the cathode 5 bump against the electron-discharging matter 4, and the oxide 4 decomposes to discharge Ba, Sr, Ca or the like, being followed by activating the surface of the cathode 5 by the above discharged element. As a result, the life of the display tube can be increased by reducing the deterioration of the cathode 5 caused by S or Cl developing from the phosphor layers 2.

Description

【発明の詳細な説明】 本発明は長寿命の多色螢光表示管に関するものである。[Detailed description of the invention] The present invention relates to a long-life multicolor fluorescent display tube.

従来の多色螢光表示管においては、アノード上に形成す
る螢光体層として、ＺｎＳ：Ａｇ、Ｃ２（青）　＝　（
Ｚｎ　−Ｃｄ　）　８　：Ａｇ　＊　Ｃｔ（赤、橙など
）などの螢光体に導電処理材料としてＩｎ２０ｍ、Ｓｍ
Ｏ２などを混合している３、このため、発光表示状態で
は螢光体層から飛散したＳやＣｔがカンードに付着しカ
ンードを劣化させる。このカンードの劣化よｐ１螢光体
層を流れる陽極電流が減少し、輝度が低下する欠点があ
った。In a conventional multicolor fluorescent display tube, the phosphor layer formed on the anode is ZnS:Ag, C2 (blue) = (
Zn-Cd) 8: In20m, Sm as a conductive treatment material for phosphors such as Ag*Ct (red, orange, etc.)
O2 and the like are mixed therein3. Therefore, in the light-emitting display state, S and Ct scattered from the phosphor layer adhere to the cand and deteriorate the cand. This deterioration of the cand causes a reduction in the anode current flowing through the p1 phosphor layer, resulting in a reduction in brightness.

したがって、本発明の目的はカンードの劣化を低減し、
長寿命の多色螢光表示管を提供するものである。Therefore, the object of the present invention is to reduce the deterioration of the cand,
The present invention provides a long-life multicolor fluorescent display tube.

このような目的を達成するため、本発明はグリッドの一
部または全面に電子放射線物質を被覆するものであり、
以下実施例を用いて詳細に説明する。In order to achieve such an object, the present invention covers part or the entire surface of the grid with an electron radiation material,
This will be explained in detail below using examples.

図は本発明に係る多色螢光表示管の一実施倒をボす概略
構成図である。同図において、１はセグメント状のアノ
ード、２はこのアノード１上に形成した螢光体層でＴｏ
シ、前記したよう１ＣＺｎＳ：Ａｇ、Ｃｊ（ｆ）　、　
（Ｚｎ、Ｃｄ）Ｓ：Ａｇ、Ｃ６（赤、ａなど）の螢光体
に導電処理材料としてＩｎ２（０、８ｎ０２などを混合
するものである。３はグリッド、４Ｉｆｉこのグリッド
３上に被覆した（ＢａｅＳｒ、Ｃａ）０．（Ｂａ、８ｒ
）ＯｐＢａＯ，Ｂａなどの電子放射性物質、５はタング
ステｙＩｊＡｌＫ　（Ｂａ　、Ｓｒ　＋Ｃａ）０−（Ｂ
ａ　、５ｒ）Ｏなどを被覆した酸化物被覆のカンードで
ある。The figure is a schematic configuration diagram showing one embodiment of a multicolor fluorescent display tube according to the present invention. In the figure, 1 is a segment-shaped anode, and 2 is a phosphor layer formed on this anode 1.
C, as mentioned above, 1CZnS:Ag, Cj(f),
(Zn, Cd) S: Ag, C6 (red, a, etc.) phosphor is mixed with In2 (0, 8n02, etc.) as a conductive treatment material. 3 is a grid, 4 Ifi is coated on this grid 3. (BaeSr, Ca) 0. (Ba, 8r
) OpBaO, Ba and other electron radioactive substances, 5 is tungsten yIjAlK (Ba, Sr + Ca)0-(B
a, 5r) This is an oxide-coated cand coated with O or the like.

次に、上記構成による多色螢光表示管におけるカンード
の劣化を有効に低減させる動作について説明する。まず
、カンード５かも放出される電子がグリッド３上に被覆
した電子放射性物質４にあたると、この電子放射性物質
４０酸化物が分解し、１１ｍ、８ｒ、Ｃａなどを放出す
る。そして、この１１Ｓｒ、ＣＩがカンード５に飛来し
、カソード５０表面を活性化する。このため、螢光体層
２から生ずるＳやＣｔによシカンード５が劣化しても、
電子放射性物質４から生ずるＢａ　、　Ｓｒ　、　Ｃｍ
などによシ、カノード５の表面を活性化する。このため
、カンード５の劣化を低減することができ、多色螢光表
示管を長寿命にすることができる。Next, a description will be given of an operation for effectively reducing deterioration of the cand in the multicolor fluorescent display tube having the above configuration. First, when the electrons emitted from the cando 5 hit the electron radioactive substance 4 coated on the grid 3, the oxide of the electron radioactive substance 40 decomposes and releases 11m, 8r, Ca, etc. Then, this 11Sr and CI fly to the canode 5 and activate the surface of the cathode 50. Therefore, even if the phosphor layer 2 deteriorates due to S and Ct generated from the phosphor layer 2,
Ba, Sr, Cm generated from electron radioactive substance 4
etc., to activate the surface of the canode 5. Therefore, deterioration of the canard 5 can be reduced, and the life of the multicolor fluorescent display tube can be extended.

なお、グリッド３に（Ｂ　ａ　＋　Ｓ　ｒ　＋　Ｃａ　
）　ＯＨ（Ｂ　ａ　ｇＳｒ）０などの電子放射性物質４
を被覆する方法としては例えば（Ｂａ、Ｓｒ、Ｃｍ）Ｃ
Ｏ３＋（Ｂａ、５ｒ）ＣＯ３などの炭酸塩をグリッド３
に塗布し、排気中に高周波加熱によ）グリッド３を加熱
して醸化物に変えることができる。また、上記実施例て
はグリッド３の一部に電子放射性物質を被覆する場合に
ついて説明したが、全面に被覆してもよいこ−とけもち
ろんである。In addition, in grid 3 (B a + S r + Ca
) Electron radioactive substances such as OH(B a gSr) 4
For example, (Ba, Sr, Cm)C
Carbonates such as O3 + (Ba, 5r) CO3 in grid 3
The grid 3 can be heated (by high-frequency heating) during evacuation and converted into a brew. Further, in the above embodiment, a case has been described in which a part of the grid 3 is coated with an electron radioactive substance, but it goes without saying that the entire surface may be coated.

以上詳細に説明しｔように、本発明に係る多色螢光表示
管によればカンードの劣化を有９！ＩＫ防止することが
でき、長寿命になるなどの効果がある。As explained in detail above, the multicolor fluorescent display tube according to the present invention suffers from deterioration of the cand. It is effective in preventing IK and extending life.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明に係る多色螢光表示管の一実施り；・を示す
概略構成図である。 １・・・・アノード、２・φ・・螢光体層、３・・・・
グリッド、４・・・φ電子放射性物質、Ｓ−・・・カン
ード。 特許出願人　　伊勢電子工業株式会社 代理人　山川政情（はが１名）The figure is a schematic configuration diagram showing one embodiment of a multicolor fluorescent display tube according to the present invention. 1... Anode, 2.φ... Fluorescent layer, 3...
Grid, 4...φ electron radioactive substance, S-... Cando. Patent applicant: Ise Electronics Industry Co., Ltd. Agent Masaaki Yamakawa (1 person)

Claims (1)

【特許請求の範囲】[Claims] グリッドの一部または全面に電子放射性物質を被覆する
ことを％徴と、する多色螢光表示管。A multicolor fluorescent display tube in which part or all of the grid is coated with an electron radioactive substance.
JP12699281A 1981-08-13 1981-08-13 Multicolor fluorescent display tube Pending JPS5828166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12699281A JPS5828166A (en) 1981-08-13 1981-08-13 Multicolor fluorescent display tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12699281A JPS5828166A (en) 1981-08-13 1981-08-13 Multicolor fluorescent display tube

Publications (1)

Publication Number Publication Date
JPS5828166A true JPS5828166A (en) 1983-02-19

Family

ID=14948970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12699281A Pending JPS5828166A (en) 1981-08-13 1981-08-13 Multicolor fluorescent display tube

Country Status (1)

Country Link
JP (1) JPS5828166A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159511U (en) * 1984-09-06 1986-04-22

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159511U (en) * 1984-09-06 1986-04-22
JPH035532Y2 (en) * 1984-09-06 1991-02-13

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