JP2723715B2 - Fluorescent display tube - Google Patents

Fluorescent display tube

Info

Publication number
JP2723715B2
JP2723715B2 JP26158191A JP26158191A JP2723715B2 JP 2723715 B2 JP2723715 B2 JP 2723715B2 JP 26158191 A JP26158191 A JP 26158191A JP 26158191 A JP26158191 A JP 26158191A JP 2723715 B2 JP2723715 B2 JP 2723715B2
Authority
JP
Japan
Prior art keywords
pattern
phosphor
display tube
anode
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.)
Expired - Fee Related
Application number
JP26158191A
Other languages
Japanese (ja)
Other versions
JPH05101796A (en
Inventor
容一 村山
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.)
KAGOSHIMA NIPPON DENKI KK
Original Assignee
KAGOSHIMA NIPPON DENKI 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 KAGOSHIMA NIPPON DENKI KK filed Critical KAGOSHIMA NIPPON DENKI KK
Priority to JP26158191A priority Critical patent/JP2723715B2/en
Publication of JPH05101796A publication Critical patent/JPH05101796A/en
Application granted granted Critical
Publication of JP2723715B2 publication Critical patent/JP2723715B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、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.

【0002】[0002]

【従来の技術】従来の蛍光表示管の1例として図3に示
す構造のものがある。陽極基板1とスペーサガラス3と
カバーガラス2と各々の間を気密封止する低融点ガラス
13で真空外囲器を構成する。陽極基板1の上には、所
定の表示パターンに形成された蛍光体膜を主とする陽極
6が設けられている。
2. Description of the Related Art FIG. 3 shows an example of a conventional fluorescent display tube. A low-melting glass 13 for hermetically sealing the space between the anode substrate 1, the spacer glass 3, and the cover glass 2 constitutes a vacuum envelope. On the anode substrate 1, an anode 6 mainly composed of a phosphor film formed in a predetermined display pattern is provided.

【0003】陽極6の上には、陽極6を覆いかつ所定の
間隙を維持して網目(メッシュ)状グリッド5が設けら
れ、更にその上に所定の間隔を維持して線状カソード4
が支持構体を使用して架張されている。使用時には、線
状カソード4は通電加熱され、網目状グリッド5の電位
が線状カソード4の電位に対し正になった時に熱電子を
放射して電子源となる。この放射された熱電子が、線状
カソード4の電位に対して正の電位になっている陽極6
を衝撃し発光させ所定のパターンを発光表示させる。
On the anode 6, a mesh grid 5 is provided so as to cover the anode 6 and maintain a predetermined gap, and further maintain a predetermined interval on the mesh grid 5.
Are stretched using a support structure. In use, the linear cathode 4 is energized and heated, and emits thermoelectrons when the potential of the mesh grid 5 becomes positive with respect to the potential of the linear cathode 4, thereby serving as an electron source. The emitted thermoelectrons are converted to an anode 6 having a positive potential with respect to the potential of the linear cathode 4.
To emit light to cause a predetermined pattern to be displayed.

【0004】陽極6は、蛍光体層7とグラファイト層8
とから成り、絶縁体層9に設けられたスルーホールを埋
める導電体10と、導電体10に電気的に接続している
導体配線11を介して外部端子12に電気的に接続さ
れ、陽極6はこの外部端子12を通してその電位を制御
される。
[0004] The anode 6 comprises a phosphor layer 7 and a graphite layer 8.
A conductor 10 that fills a through hole provided in the insulator layer 9, and is electrically connected to an external terminal 12 via a conductor wiring 11 that is electrically connected to the conductor 10. Is controlled in potential through this external terminal 12.

【0005】表示パターンは蛍光体層7の平面形状によ
り決まり、蛍光体層7の網目状グリッド5側の表面は、
他の物質により覆われるように形成されることはない。
この蛍光体層7は、シルクスクリーンを使用した印刷法
で形成できる利点を有している。
The display pattern is determined by the planar shape of the phosphor layer 7, and the surface of the phosphor layer 7 on the side of the mesh grid 5 is
It is not formed to be covered by other materials.
This phosphor layer 7 has an advantage that it can be formed by a printing method using a silk screen.

【0006】[0006]

【発明が解決しようとする課題】この従来の蛍光表示管
においては、蛍光体の発光効率の点から蛍光体の粒径に
数μm〜10数μmという最適条件範囲があり、又発光
輝度の点から蛍光体層の厚さに20〜30μm以上必要
という条件が存在するため、蛍光体層を形成する印刷工
程に使用するスクリーンのメッシュピッチ,厚さ及び印
刷時の蛍光体ペーストと粘度に制約が加わる。このため
例えばある種の漢字の如き複雑なパターンにおいては、
実用に供せられるパターンサイズは下限を有していた。
すなわち、蛍光体のプリント条件の制限からパターンに
よっては、あまり小さくできないという問題点を有して
いた。
In this conventional fluorescent display tube, the particle diameter of the phosphor has an optimum condition range of several μm to several tens μm from the viewpoint of the luminous efficiency of the phosphor, and the luminous luminance is low. Therefore, there is a condition that the thickness of the phosphor layer is required to be 20 to 30 μm or more. Therefore, there are restrictions on the mesh pitch, the thickness of the screen used in the printing process for forming the phosphor layer, the phosphor paste and the viscosity at the time of printing. Join. For this reason, in complicated patterns such as certain kanji,
The pattern size available for practical use had a lower limit.
In other words, there is a problem that the size of the pattern cannot be reduced so much depending on the printing conditions of the phosphor.

【0007】[0007]

【課題を解決するための手段】本発明は、主としてガラ
スより成る真空外囲器と前記真空外囲器内に設けられた
電子源としての線状カソードと前記線状カソードから放
出された電子の衝撃により発光する主として蛍光体から
成る陽極とを備えた蛍光表示管において、前記陽極の蛍
光体層の前記線状カソード側表面の一部に導電性非発光
物質層を設けたことを特徴とする。
According to the present invention, there is provided a vacuum envelope mainly made of glass, a linear cathode provided as an electron source in the vacuum envelope, and an electron emitted from the linear cathode. In a fluorescent display tube comprising an anode mainly composed of a phosphor which emits light by impact, a conductive non-luminous material layer is provided on a part of the surface of the phosphor layer of the anode on the side of the linear cathode. .

【0008】[0008]

【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は本発明の一実施例を示す陽極部分の断面図で
ある。グラファイト層8の上に印刷法で形成された蛍光
体層7が設けられ、更にその表面の一部に印刷法で形成
された導電性非発光物質層14を設けている。例えば、
“東”という漢字の表示パターンを形成するのに、図2
(a)に示したパターンの蛍光体層7の上に図2(b)
に示したパターンの導電性非発光物質パターン14を設
ける。
Next, the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of an anode part showing one embodiment of the present invention. The phosphor layer 7 formed by a printing method is provided on the graphite layer 8, and a conductive non-luminescent material layer 14 formed by a printing method is provided on a part of the surface thereof. For example,
To form the display pattern of the kanji “east”, FIG.
FIG. 2B shows a pattern on the phosphor layer 7 having the pattern shown in FIG.
The conductive non-luminescent material pattern 14 having the pattern shown in FIG.

【0009】通常の蛍光表示管においては、蛍光体の発
光励起電子の加速電圧は高々数10Vであり、この発光
励起電子の蛍光体への侵入深さは数10オングストロー
ムである。従って、本発明による導電性非発光物質パタ
ーン14の厚さは数100オングストローム以上であれ
ばその目的を達し得る。従って、本発明による導電性非
発光物質パターンは、用いる素材の粒径は、数100オ
ングストロームの超微粉末を使用して、目の細かく又厚
さの薄いスクリーンを使用した印刷法により、蛍光体層
に比較して飛躍的に微細なパターン形成を成すことがで
きる。又、本発明に用いる導電性非発光物質は、周辺の
蛍光体層の発光特性に影響を及ぼすことを避けねばなら
ないから使用可能な材質は限られる。又、導電性非発光
物質の代替物として誘電体非発光物質を使用すると誘電
体の帯電により周囲への電子入射が妨げられ、周囲の蛍
光体層の発光輝度が著しく低下し商品価値を損う。
In a typical fluorescent display tube, the acceleration voltage of emission excitation electrons of the phosphor is at most several tens of volts, and the penetration depth of the emission excitation electrons into the phosphor is several tens of angstroms. Therefore, the purpose can be achieved if the thickness of the conductive non-luminescent material pattern 14 according to the present invention is not less than several hundred angstroms. Therefore, the conductive non-emissive material pattern according to the present invention uses a phosphor having a particle size of several hundred angstroms by a printing method using a fine and thin screen using a fine powder. A fine pattern can be formed dramatically compared to the layer. In addition, the conductive non-luminescent material used in the present invention must be used to avoid affecting the light emitting characteristics of the surrounding phosphor layer, so that usable materials are limited. Also, when a dielectric non-luminescent material is used as a substitute for a conductive non-luminescent material, the charge of the dielectric prevents electron incidence to the surroundings, and the emission luminance of the surrounding phosphor layer is significantly reduced, thereby deteriorating the commercial value. .

【0010】本実施例においては、導電性非発光物質と
してIn2 3 を用い従来、字高3mmが実用的限界で
あった“東”の文字を字高2.7mmで形成することが
できた。なお、図2の文字パターン形成は1例であり、
これに限るものではない。
In this embodiment, In 2 O 3 is used as the conductive non-luminous substance, and the character of “East”, which was conventionally at a practical limit of a character height of 3 mm, can be formed at a character height of 2.7 mm. Was. In addition, the character pattern formation of FIG. 2 is an example,
It is not limited to this.

【0011】[0011]

【発明の効果】以上説明したように本発明は、蛍光体層
の表面に導電性非発光物質パターンを設けることにより
発光パターンの形成を行っているので、複雑なパターン
も従来より小さく形成できるという効果を有している。
又、形成法も印刷法によるためフォトリソグラフィ法に
よる微細パターン形成に比較し経済的である。
As described above, according to the present invention, since a luminescent pattern is formed by providing a conductive non-luminescent material pattern on the surface of a phosphor layer, a complicated pattern can be formed smaller than before. Has an effect.
Also, since the forming method is based on a printing method, it is more economical than forming a fine pattern by a photolithography method.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例の陽極部分の断面図である。FIG. 1 is a sectional view of an anode part according to an embodiment of the present invention.

【図2】本発明のプリントパターンの1例を示す図で、
(a)図は蛍光体層プリントパターン,(b)図は導電
性非発光物質パターンを示す図である。
FIG. 2 is a view showing an example of a print pattern according to the present invention;
(A) is a diagram showing a phosphor layer print pattern, and (b) is a diagram showing a conductive non-emissive material pattern.

【図3】従来の蛍光体表示管を示す断面図である。FIG. 3 is a cross-sectional view showing a conventional phosphor display tube.

【符号の説明】[Explanation of symbols]

1 陽極基板 2 カバーガラス 3 スペーサーガラス 4 線状カソード 5 網目状グリッド 6 陽極 7 蛍光体層 8 グラファイト層 9 絶縁体層 10 導電体 11 導体配線 12 外部端子 13 低融点ガラス 14 導電非発光物質パターン DESCRIPTION OF SYMBOLS 1 Anode substrate 2 Cover glass 3 Spacer glass 4 Linear cathode 5 Mesh grid 6 Anode 7 Phosphor layer 8 Graphite layer 9 Insulator layer 10 Conductor 11 Conductor wiring 12 External terminal 13 Low melting point glass 14 Conductive non-luminous material pattern

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 主としてガラスより成る真空外囲器と前
記真空外囲器内に設けられた電子源としての線状カソー
ドと前記線状カソードから放出された電子の衝撃により
発光する主として蛍光体から成る陽極とを備えた蛍光表
示管において、前記陽極の蛍光体層の前記線状カソード
側表面の一部に導電性非発光物質層を設けたことを特徴
とする蛍光表示管。
1. A vacuum envelope mainly made of glass, a linear cathode provided as an electron source provided in the vacuum envelope, and mainly a phosphor which emits light by the impact of electrons emitted from the linear cathode. A fluorescent display tube comprising: a conductive non-emissive material layer provided on a part of the surface of the fluorescent layer of the anode on the side of the linear cathode.
JP26158191A 1991-10-09 1991-10-09 Fluorescent display tube Expired - Fee Related JP2723715B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26158191A JP2723715B2 (en) 1991-10-09 1991-10-09 Fluorescent display tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26158191A JP2723715B2 (en) 1991-10-09 1991-10-09 Fluorescent display tube

Publications (2)

Publication Number Publication Date
JPH05101796A JPH05101796A (en) 1993-04-23
JP2723715B2 true JP2723715B2 (en) 1998-03-09

Family

ID=17363910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26158191A Expired - Fee Related JP2723715B2 (en) 1991-10-09 1991-10-09 Fluorescent display tube

Country Status (1)

Country Link
JP (1) JP2723715B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0225795D0 (en) 2002-11-05 2002-12-11 Guillon Michael Wipes

Also Published As

Publication number Publication date
JPH05101796A (en) 1993-04-23

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Effective date: 19971104

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