JP2702448B2 - Fluorescent display tube - Google Patents
Fluorescent display tubeInfo
- Publication number
- JP2702448B2 JP2702448B2 JP7133688A JP13368895A JP2702448B2 JP 2702448 B2 JP2702448 B2 JP 2702448B2 JP 7133688 A JP7133688 A JP 7133688A JP 13368895 A JP13368895 A JP 13368895A JP 2702448 B2 JP2702448 B2 JP 2702448B2
- Authority
- JP
- Japan
- Prior art keywords
- insulating layer
- display tube
- fluorescent display
- layer
- insulating
- 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 - Fee Related
Links
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 17
- 239000000049 pigment Substances 0.000 claims description 14
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000006059 cover glass Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000007650 screen-printing Methods 0.000 description 12
- 238000010304 firing Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000005361 soda-lime glass Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- LCKIEQZJEYYRIY-UHFFFAOYSA-N Titanium ion Chemical compound [Ti+4] LCKIEQZJEYYRIY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- -1 titanium ions Chemical class 0.000 description 1
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)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蛍光表示管に関し、特
に陽極基板上に絶縁層に酸化チタン，酸化鉄等の顔料を
含まない絶縁ガラスペーストを使用した蛍光表示管に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent display tube, and more particularly to a fluorescent display tube using an insulating glass paste which does not contain a pigment such as titanium oxide or iron oxide on an anode substrate.
【０００２】[0002]
【従来の技術】従来の蛍光表示管は、図４及び図５に示
す様にソーダライムガラス１上に銀又はアルミニウムに
てスクリーン印刷又は蒸着法により陽極配線２を形成し
た後、５６０〜５９０℃で焼成し、その上に蛍光体のボ
ディカラーである白色とコントラストを良くする目的や
遮光性を向上する目的で顔料として酸化チタンや酸化鉄
を混練した絶縁ガラスペーストをスクリーン印刷等の手
法を用い積層し５５０〜６００℃の温度で焼成し絶縁層
３を形成する。その後、グラファイト層５をスクリーン
プリント等の手法を用い積層し、５５０〜５６０℃の温
度で焼成形成する。その後、蛍光体層６をスクリーン印
刷等の手法を用いグラファイト層５上に積層し、４８０
〜５１０℃の温度で焼成形成することにより陽極基板１
５を形成していた。2. Description of the Related Art As shown in FIGS. 4 and 5, a conventional fluorescent display tube is formed by forming an anode wiring 2 on a soda lime glass 1 by screen printing or vapor deposition using silver or aluminum, and then forming the anode wiring 2 at 560 to 590.degree. Insulating glass paste kneaded with titanium oxide or iron oxide as a pigment for the purpose of improving the contrast with the white color, which is the body color of the phosphor, and for improving the light shielding properties, using a method such as screen printing. The layers are stacked and fired at a temperature of 550 to 600 ° C. to form an insulating layer 3. Thereafter, the graphite layer 5 is laminated using a technique such as screen printing, and is formed by firing at a temperature of 550 to 560 ° C. Thereafter, the phosphor layer 6 is laminated on the graphite layer 5 using a method such as screen printing, and 480
The anode substrate 1 is formed by firing at a temperature of
5 had been formed.
【０００３】その後、４２６合金からなるスペーサ１３
にフィラメント１０，グリッド１１，ゲッター１２を溶
接してなる電極１６と、陽極基板１５及びカバーガラス
１４を組み合せ封入工程で溶着した後、排気工程にて真
空容器を形成する。真空容器形成後、高周波誘導等の手
法を用いゲッター膜を蒸着することで真空管内の真空度
を１０-6〜１０-7Ｔｏｒｒの真空度にする。その後、仕
上工程において、リード端子の酸化膜の除去、半田付を
行い、枯化工程にて、フィラメント、蛍光体の活性化を
行い、蛍光表示管としていた。しかしながら、この酸化
チタンや酸化鉄を含む絶縁ガラスペーストは絶縁耐圧が
低いという欠点を有している。[0003] Thereafter, spacer 13 made of 426 alloy is used.
An electrode 16 formed by welding a filament 10, a grid 11, and a getter 12 to an anode substrate 15 and a cover glass 14 are combined and welded in an encapsulation process, and then a vacuum vessel is formed in an evacuation process. After the formation of the vacuum vessel, the degree of vacuum in the vacuum tube is reduced to 10 -6 to 10 -7 Torr by depositing a getter film using a technique such as high-frequency induction. Thereafter, in a finishing step, an oxide film of the lead terminal was removed and soldered, and in a deadening step, a filament and a phosphor were activated to obtain a fluorescent display tube. However, the insulating glass paste containing titanium oxide or iron oxide has a disadvantage that the withstand voltage is low.
【０００４】[0004]
【発明が解決しようとする課題】この従来の蛍光表示管
は、絶縁層の着色剤として酸化チタンや酸化鉄等の顔料
を混練した絶縁ガラスペーストにて絶縁層を形成し、絶
縁層上に直接グラファイト層、蛍光体層を積層していた
為、絶縁層中の顔料である金属酸化物が加熱又は、電圧
印加によりグラファイト層や蛍光体層へ拡散することに
より、グラファイトや蛍光体を汚染し、蛍光体の発光特
性に影響を及ぼしたり、又、絶縁層表面に金属分が析出
してきて絶縁劣化を引き起すといった問題があった。特
に酸化チタンを絶縁層の顔料として用いた場合、陽極へ
印加されるアノード電圧及び蛍光表示管を駆動させる環
境温度が高くなることにより、絶縁層中にＴｉＯ2 とし
て安定していたチタンがチタンイオン（Ｔｉ4+）になり
絶縁層中の移動度が大きくなる。更に、フィラメントよ
り放射される電子をチタンイオン（Ｔｉ4+）が吸収し、
金属チタン（Ｔｉ）へと還元され、絶縁層表面に金属チ
タンが析出してくるので、図３（ａ），図３（ｂ）に示
す様に、駆動時間が経過するに従い、１０００ＭΩあっ
た絶縁抵抗が１０００時間で１ＭΩまで劣化するという
不都合があった。In this conventional fluorescent display tube, an insulating layer is formed from an insulating glass paste in which a pigment such as titanium oxide or iron oxide is kneaded as a coloring agent for the insulating layer, and the insulating layer is directly formed on the insulating layer. Since the graphite layer and the phosphor layer were laminated, the metal oxide as a pigment in the insulating layer was heated or diffused into the graphite layer and the phosphor layer by applying a voltage, thereby contaminating the graphite and the phosphor, There are problems that the light emission characteristics of the phosphor are affected, and that metal is deposited on the surface of the insulating layer to cause insulation deterioration. In particular, when titanium oxide is used as a pigment for the insulating layer, the anode voltage applied to the anode and the environmental temperature for driving the fluorescent display tube are increased, so that titanium that has been stabilized as TiO 2 in the insulating layer becomes titanium ion. (Ti 4+ ) and the mobility in the insulating layer increases. Furthermore, titanium ions (Ti 4+ ) absorb electrons emitted from the filament,
Since it is reduced to metal titanium (Ti) and metal titanium is deposited on the surface of the insulating layer, as shown in FIGS. 3 (a) and 3 (b), as the driving time elapses, the insulation becomes 1000 MΩ. There was a disadvantage that the resistance deteriorated to 1 MΩ in 1000 hours.
【０００５】[0005]
【課題を解決するための手段】本発明による蛍光表示管
は、絶縁ガラスペースト中に酸化チタンや，酸化鉄等の
顔料を混練した絶縁層から金属分の析出を抑制する為
に、前記酸化チタンや酸化鉄を含む絶縁層上に酸化チタ
ンや、酸化鉄等の顔料を全く含まない絶縁ガラスペース
トにて絶縁層をオーバーコートし、その上にグラファイ
ト層や蛍光体層を形成するものである。特に、下層の絶
縁層が呈している色を絶縁層のボディカラーとして使用
したい場合は、オーバーコート絶縁層に透明色を呈する
絶縁ガラスペーストを使用する。According to the present invention, there is provided a fluorescent display tube comprising the above-described titanium oxide in order to suppress the deposition of metal from an insulating layer in which a pigment such as titanium oxide or iron oxide is kneaded in an insulating glass paste. The insulating layer is overcoated with an insulating glass paste containing no pigment such as titanium oxide or iron oxide on the insulating layer containing iron or iron oxide, and a graphite layer or a phosphor layer is formed thereon. In particular, when it is desired to use the color of the lower insulating layer as the body color of the insulating layer, use an insulating glass paste that exhibits a transparent color for the overcoat insulating layer.
【０００６】[0006]
【実施例】次に本発明について図面を参照して説明す
る。図１は、本発明の第１の実施例の断面図である。ソ
ーダライムガラス板１上にスクリーン印刷法又は蒸着法
によりＡｇ配線又はＡｌ配線２を形成する。その後酸化
チタン，酸化鉄等の顔料を含有し、焼結後に可視色を呈
する絶縁ガラスペーストをスクリーンプリント法等を用
い約２０μｍの厚さに塗布し、５５０〜６００℃で焼成
した後第１の絶縁層３を形成する。絶縁層膜厚２０μｍ
では耐電圧的に品質を満足できず、絶縁層膜厚４０μｍ
以上必要である為及び絶縁層中からの金属の析出を抑制
する為に、酸化チタン，酸化鉄を含まない絶縁ガラスペ
ーストを用いスクリーンプリント法等の手法を用い、約
２０μｍの厚さに塗布し、その後５５０〜６００℃で焼
成することにより第２の絶縁層４を形成する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a first embodiment of the present invention. An Ag wiring or an Al wiring 2 is formed on a soda lime glass plate 1 by a screen printing method or a vapor deposition method. After that, an insulating glass paste containing a pigment such as titanium oxide or iron oxide and exhibiting a visible color after sintering is applied to a thickness of about 20 μm using a screen printing method or the like, and is fired at 550 to 600 ° C. An insulating layer 3 is formed. Insulation layer thickness 20μm
Cannot satisfy the quality in terms of withstand voltage, and the thickness of the insulating layer is 40 μm.
Because of the above-mentioned necessity and to suppress the deposition of metal from the insulating layer, using an insulating glass paste containing no titanium oxide and iron oxide, using a method such as a screen printing method, apply the film to a thickness of about 20 μm. Then, the second insulating layer 4 is formed by baking at 550 to 600 ° C.
【０００７】次に第２の絶縁層４上にスクリーンプリン
ト等の手法を用いグラファイト層５を形成し、５５０〜
５６０℃で焼成積層する。更にスクリーンプリント等の
手法を用い蛍光体層６を形成し、４８０〜５１０℃で焼
成形成する。この様な方法で形成した陽極基板を図５に
示すように、４２６合金からなるスペーサ１３にフィラ
メント１０，グリッド１１，ゲッター１２を溶接した電
極１６とカバーガラス１４とを組み合せ、封入排気工程
を経て真空容器とした後、仕上工程にて半田メッキをリ
ード端子１７に施し、枯化工程を経てフィラメント蛍光
体を活性化し絶縁層上に金属分が析出しない蛍光表示管
が得られる。Next, a graphite layer 5 is formed on the second insulating layer 4 using a technique such as screen printing, and
Baking and laminating at 560 ° C. Further, the phosphor layer 6 is formed by using a method such as screen printing, and is formed by firing at 480 to 510 ° C. As shown in FIG. 5, an anode substrate formed by such a method is combined with an electrode 16 obtained by welding a filament 10, a grid 11, and a getter 12 to a spacer 13 made of a 426 alloy, and a cover glass 14, as shown in FIG. After forming the vacuum vessel, a solder plating is applied to the lead terminals 17 in a finishing step, and the filament phosphor is activated through a deadening step to obtain a fluorescent display tube in which no metal component is deposited on the insulating layer.
【０００８】次に本発明の第２の実施例について図１を
参照しながら説明する。第１の実施例と同一の方法で形
成された第１の絶縁層３が呈している色を蛍光表示管の
絶縁層のボディカラーとして使用する為に、焼成後透明
色を呈する絶縁ガラスペースト（本発明では着色剤とし
ての顔料を含まない硼珪酸鉛を主体としたガラスペース
トを用いた）をスクリーンプリント等の手法を用い第１
の絶縁層３上に形成し５６０〜５９０℃で焼成して第２
の絶縁層を形成する。その後、第１の実施例で説明した
のと同一手法によって蛍光表示管を形成する。本実施例
の場合、所望の絶縁層のボディカラーを損うことなく、
絶縁層上に金属分が析出してこない、蛍光表示管を形成
することができる。Next, a second embodiment of the present invention will be described with reference to FIG. In order to use the color of the first insulating layer 3 formed by the same method as that of the first embodiment as the body color of the insulating layer of the fluorescent display tube, the insulating glass paste having a transparent color after firing ( In the present invention, a glass paste mainly containing lead borosilicate not containing a pigment as a coloring agent is used.
Is formed on the insulating layer 3 of FIG.
Is formed. Thereafter, a fluorescent display tube is formed by the same method as described in the first embodiment. In the case of this embodiment, without damaging the body color of the desired insulating layer,
A fluorescent display tube in which metal does not deposit on the insulating layer can be formed.
【０００９】次に図２を参照して本発明の第３の実施例
を説明する。第１の実施例と同一方法で形成された陽極
配線層上に焼成後黒色を呈する酸化鉄等の顔料を含んだ
絶縁ガラスペーストをスクリーンプリント法等の手法を
用い形成し５５０〜５９０℃の温度で焼成し黒色絶縁層
７形成する。その後、黒色絶縁層７上に焼成後白色を呈
する酸化チタン等の顔料を含んだ絶縁ガラスをスクリー
ンプリント法等の手法を用いて部分的に形成し５５０〜
５９０℃の温度で焼成し白色絶縁層８を形成する。その
後、焼成後透明色を呈す着色剤として酸化チタンや酸化
鉄等の顔料を含まない硼珪酸鉛を主体とした絶縁ガラス
ペーストを用いスクリーンプリント等の手法にて黒色絶
縁層７及び白色絶縁層８全面を覆う様に形成し５５０〜
６００℃の温度で焼成して透明絶縁層９を形成する。そ
の後、第１の実施例と同一手法で蛍光表示管を形成す
る。本実施例によると絶縁層のボディカラーを多色化し
て使用する場合、絶縁層のボディカラーを変えることな
く絶縁層表面に金属分が析出してこない蛍光表示管を作
成することができる。Next, a third embodiment of the present invention will be described with reference to FIG. An insulating glass paste containing a pigment such as iron oxide which exhibits a black color after firing is formed on the anode wiring layer formed by the same method as in the first embodiment using a screen printing method or the like. And a black insulating layer 7 is formed. Thereafter, an insulating glass containing a pigment such as titanium oxide which exhibits a white color after firing is partially formed on the black insulating layer 7 by using a method such as a screen printing method to form 550 to 550.
Baking is performed at a temperature of 590 ° C. to form a white insulating layer 8. Thereafter, a black insulating layer 7 and a white insulating layer 8 are formed by screen printing or the like using an insulating glass paste mainly containing lead borosilicate not containing a pigment such as titanium oxide or iron oxide as a colorant exhibiting a transparent color after firing. Formed to cover the entire surface
The transparent insulating layer 9 is formed by firing at a temperature of 600 ° C. Thereafter, a fluorescent display tube is formed in the same manner as in the first embodiment. According to this embodiment, when the body color of the insulating layer is multicolored and used, a fluorescent display tube in which metal does not deposit on the surface of the insulating layer can be produced without changing the body color of the insulating layer.
【００１０】図３（ａ），（ｂ）は、駆動時間および環
境温度に対する絶縁劣化特性を示している。これから従
来の蛍光表示管は、駆動時間が１０００時間程で１ＭΩ
を下まわっていたのに対し、本発明の蛍光表示管は、３
０００時間以上経過しても、絶縁抵抗は変化していない
ことがわかる。FIGS. 3 (a) and 3 (b) show insulation deterioration characteristics with respect to driving time and environmental temperature. From now on, the conventional fluorescent display tube has a driving time of about 1000 hours and 1 MΩ.
In contrast, the fluorescent display tube of the present invention
It can be seen that the insulation resistance has not changed even after 000 hours or more.
【００１１】[0011]
【発明の効果】以上説明したように、本発明はＴｉ
Ｏ2 ，Ｆｅ2 Ｏ3 等を含有する絶縁層にＴｉＯ2 ，Ｆｅ
2 Ｏ3 等の顔料を含有していない絶縁層をオーバーコー
トし、その上層にグラファイト層，蛍光体層を積層し形
成しているので、絶縁層からＴｉ，Ｆｅが析出して絶縁
劣化を引き起さないという効果がある。As described above, according to the present invention, Ti
O 2, TiO 2 in an insulating layer containing Fe 2 O 3 or the like, Fe
Since an insulating layer containing no pigment such as 2 O 3 is overcoated and a graphite layer and a phosphor layer are formed on the insulating layer, Ti and Fe are deposited from the insulating layer to cause insulation deterioration. There is an effect that it does not occur.
【図１】本発明の第１の実施例の陽極基板を示す断面図
である。FIG. 1 is a sectional view showing an anode substrate according to a first embodiment of the present invention.
【図２】本発明の第３の実施例の陽極基板を示す断面図
である。FIG. 2 is a sectional view showing an anode substrate according to a third embodiment of the present invention.
【図３】（ａ），（ｂ）は駆動時間と環境温度による絶
縁劣化を示す特性図である。FIGS. 3A and 3B are characteristic diagrams showing insulation deterioration due to driving time and environmental temperature.
【図４】従来の蛍光表示間の陽極基板の断面図である。FIG. 4 is a cross-sectional view of a conventional anode substrate between fluorescent displays.
【図５】従来の蛍光表示管の一部破断斜視図である。FIG. 5 is a partially cutaway perspective view of a conventional fluorescent display tube.
１ ソーダライムガラス ２ 陽極配線 ３ 第１絶縁層 ４ 第２絶縁層 ５ グラファイト層 ６ 蛍光体層 ７ 黒色絶縁層 ８ 白色絶縁層 ９ 透明絶縁層 １０ フィラメント １１ グリッド １２ ゲッター １３ スペーサ １４ カバーガラス １５ 陽極基板 １６ 電極 １７ リード端子 DESCRIPTION OF SYMBOLS 1 Soda lime glass 2 Anode wiring 3 First insulating layer 4 Second insulating layer 5 Graphite layer 6 Phosphor layer 7 Black insulating layer 8 White insulating layer 9 Transparent insulating layer 10 Filament 11 Grid 12 Getter 13 Spacer 14 Cover glass 15 Anode substrate 16 electrode 17 lead terminal
Claims (3)
第１絶縁層，第２絶縁層、グラファイト層，蛍光体層が
順に積層された陽極基板と、電子を放射するフィラメン
ト及びフィラメントから放出された電子を制御するグリ
ッドからなる電極と、真空容器を形成するカバーガラス
とを有する蛍光表示管において、前記第２絶縁層に金属
酸化物の顔料を含まない絶縁ガラスを使用した事を特徴
とする蛍光表示管。(1) silver or aluminum wiring on a glass plate,
Forming an anode substrate on which a first insulating layer, a second insulating layer, a graphite layer, and a phosphor layer are sequentially stacked, an electrode including a filament for emitting electrons and a grid for controlling electrons emitted from the filament, and a vacuum container A fluorescent display tube having a cover glass, wherein an insulating glass containing no metal oxide pigment is used for the second insulating layer.
透明色を呈する絶縁ガラスを使用したことを特徴とする
請求項１記載の蛍光表示管。2. The fluorescent display tube according to claim 1, wherein the second insulating layer is made of a transparent insulating glass that does not contain a metal oxide.
2 ）または酸化鉄（Ｆｅ2 Ｏ3 ）であることを特徴とす
る請求項１または請求項２記載の蛍光表示管。3. The method according to claim 1, wherein the metal oxide is titanium oxide (TiO.sub.2).
3. The fluorescent display tube according to claim 1, wherein the fluorescent display tube is made of 2 ) or iron oxide (Fe 2 O 3 ).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7133688A JP2702448B2 (en) | 1995-05-31 | 1995-05-31 | Fluorescent display tube |
| KR1019960019607A KR960042896A (en) | 1995-05-31 | 1996-05-28 | Fluorescent light tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7133688A JP2702448B2 (en) | 1995-05-31 | 1995-05-31 | Fluorescent display tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08329868A JPH08329868A (en) | 1996-12-13 |
| JP2702448B2 true JP2702448B2 (en) | 1998-01-21 |
Family
ID=15110560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7133688A Expired - Fee Related JP2702448B2 (en) | 1995-05-31 | 1995-05-31 | Fluorescent display tube |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2702448B2 (en) |
| KR (1) | KR960042896A (en) |
-
1995
- 1995-05-31 JP JP7133688A patent/JP2702448B2/en not_active Expired - Fee Related
-
1996
- 1996-05-28 KR KR1019960019607A patent/KR960042896A/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| KR960042896A (en) | 1996-12-21 |
| JPH08329868A (en) | 1996-12-13 |
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