JPH023261B2 - - Google Patents
Info
- Publication number
- JPH023261B2 JPH023261B2 JP57054059A JP5405982A JPH023261B2 JP H023261 B2 JPH023261 B2 JP H023261B2 JP 57054059 A JP57054059 A JP 57054059A JP 5405982 A JP5405982 A JP 5405982A JP H023261 B2 JPH023261 B2 JP H023261B2
- Authority
- JP
- Japan
- Prior art keywords
- anode
- phosphor
- pigment
- light
- zinc oxide
- 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
Links
Classifications
-
- 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
- H01J29/20—Luminescent screens characterised by the luminescent material
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
【発明の詳細な説明】
本発明は顔料混合蛍光体の発光性を良好にする
ことができる蛍光表示管に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluorescent display tube in which the luminescence properties of a pigment-mixed phosphor can be improved.
通常、蛍光表示管に用いられる蛍光体は低速電
子線によつて容易に発光することが必要であり、
主に酸化亜鉛蛍光体（ZnO：Zn）、あるいはZnS
系、（Zn、Cd）Ｓ系、SnO2系などの蛍光体が用
いられるが、この内、発光効率、輝度、寿命特性
などで優れた特性を示す酸化亜鉛蛍光体（ZnO：
Zn）が主に使用されている。そこで、所望の発
光色を取り出す方法として、
(イ) 酸化亜鉛蛍光体（ZnO：Zn）の発光波長は
そのピーク波長として緑色が主であるが、青色
から赤色までの広い発光色を有しているため、
管外に色フイルタを設けて青色、橙色あるいは
赤色などの発光色を取り出すもの、
(ロ) 発光色の異なる蛍光体例えば導電処理された
ZnS：Ag（青）、ZnS：Cu、Al（緑）、ZnS：Mn
（橙）、ZnS：Au、Al（レモン）、（Zn、Cd）
Ｓ：Ag（赤）を用いるもの、
(ハ) 第１図に示すように、酸化亜鉛蛍光体
（ZnO：Zn）に顔料を混入する、いわゆる顔料
混合蛍光体１を陽極２上に塗布するもの等があ
る。 Normally, phosphors used in fluorescent display tubes must be able to easily emit light when exposed to slow electron beams.
Mainly zinc oxide phosphor (ZnO:Zn) or ZnS
Among these, zinc oxide phosphors ( ZnO :
Zn) is mainly used. Therefore, as a method to extract the desired emission color, (a) Zinc oxide phosphor (ZnO:Zn) has a peak wavelength of mainly green light, but it has a wide range of light emission colors from blue to red. Because there are
(b) Phosphors that emit light of different colors, such as those that have been treated with conductive
ZnS:Ag (blue), ZnS:Cu, Al (green), ZnS:Mn
(Orange), ZnS: Au, Al (Lemon), (Zn, Cd)
S: Using Ag (red); (C) As shown in Figure 1, a so-called pigment-mixed phosphor 1, in which a pigment is mixed into a zinc oxide phosphor (ZnO:Zn), is coated on the anode 2. etc.
この場合、(ハ)の例では蛍光体粒子の表面から放
射される光が蛍光体周辺で乱反射し、その一部が
顔料に射突して、顔料の分光特性に応じた光出力
３が取り出される。なお、４はガラス基板であ
る。 In this case, in example (c), the light emitted from the surface of the phosphor particles is diffusely reflected around the phosphor, and a part of it hits the pigment, and a light output 3 corresponding to the spectral characteristics of the pigment is extracted. It will be done. Note that 4 is a glass substrate.
しかしながら、従来のカソード・フイラメント
側から見る蛍光表示管において、
前記(イ)の方法は色フイルタと蛍光体との距離が
はなれているため、視差が生じ、細かな多色パタ
ーンが得られないこと、
前記(ロ)の方法は各発光色の蛍光体の劣化特性が
それぞれ異なるため、最も短い寿命の蛍光体によ
つて限定され、しかも途中で色調が変わること、
前記(ハ)の方法は顔料自身が全く発光に寄与しな
いので、発光出力が殆ど蛍光体からのものである
ため、波長の変換効率が悪く、望みの発光色を望
みの輝度で得られないこと、等の問題がある。 However, in conventional fluorescent display tubes viewed from the cathode filament side, method (a) has the disadvantage that the distance between the color filter and the phosphor is large, causing parallax and making it impossible to obtain a fine multicolor pattern. The above method (b) is limited to the shortest lifetime phosphor because the deterioration characteristics of the phosphors of each emitting color are different, and the color tone changes midway; and the above method (c) uses pigments. Since the phosphor itself does not contribute to light emission at all, most of the light emission output comes from the phosphor, which causes problems such as poor wavelength conversion efficiency and the inability to obtain the desired light emission color with the desired brightness.
(ハ)の場合、顔料の混合量を多くすることが考え
られるが、顔料自身は全く発光に寄与しないた
め、蛍光体の発光能力を阻害することになり、輝
度が極端に低下し、外部に取り出す光出力も低下
する。 In the case of (c), it may be possible to increase the amount of pigment mixed, but since the pigment itself does not contribute to light emission at all, it will inhibit the luminescence ability of the phosphor, resulting in an extremely low brightness and external radiation. The output light output also decreases.
したがつて、本発明の目的は視差をなくして、
細かいパターンの多色表示が可能で、しかも各色
の劣化特性を一定にすることができる蛍光表示管
を提供するものである。 Therefore, an object of the present invention is to eliminate parallax,
To provide a fluorescent display tube that is capable of displaying fine patterns in multiple colors and also making the deterioration characteristics of each color constant.
このような目的を達成するため、本発明は透光
性を有する基板と、この基板上に形成した透明導
電膜の陽極と、この陽極上に形成した導電性を有
する顔料層と、この層の上に塗布した酸化亜鉛蛍
光体とを備え、前記酸化亜鉛蛍光体の発光が顔料
粒子を通過して陽極基板側から表示するものであ
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 includes a transparent substrate, an anode of a transparent conductive film formed on this substrate, a conductive pigment layer formed on this anode, and a transparent conductive film anode formed on this substrate, and a conductive pigment layer formed on this anode. A zinc oxide phosphor is coated on the phosphor, and the light emitted from the zinc oxide phosphor passes through the pigment particles and is displayed from the anode substrate side.This will be described in detail below using examples.
第２図は本発明に係る蛍光表示管の一実施例を
示す一部概略断面図であり、光を出力陽極基板側
から取り出すものである。同図において、５はガ
ラス基板などの透光性の基板、６はこの基板５上
に例えばIn2O3−SnO2系からなる透明導電膜をス
パツタリング法によつて0.2μｍ程度に形成したの
ち、フオトエツチング法にて所望のパターンに形
成した透明導電膜の陽極、８は前記陽極６上形成
した例えばアルミン酸コバルトの顔料に導電性物
質（In2O3、SnO2など）を混合した導電性を有す
る顔料層、９はこの導電性を有する顔料層８上に
印刷形成した酸化亜鉛発光体層である。 FIG. 2 is a partially schematic sectional view showing an embodiment of a fluorescent display tube according to the present invention, in which light is extracted from the output anode substrate side. In the figure, 5 is a transparent substrate such as a glass substrate, and 6 is a transparent conductive film made of, for example, In 2 O 3 -SnO 2 based on this substrate 5, which is formed to a thickness of about 0.2 μm by sputtering method. , an anode made of a transparent conductive film formed into a desired pattern by a photo-etching method; 8 is a conductive material formed on the anode 6, which is made by mixing a conductive substance (In 2 O 3 , SnO 2, etc.) with a pigment of cobalt aluminate, for example; A pigment layer 9 having conductivity is a zinc oxide luminescent layer printed on this pigment layer 8 having conductivity.
次に、上記構成による蛍光表示管の発光動作に
ついて説明する。まず、低速電子線により酸化亜
鉛蛍光体９が発光すると、蛍光体表面に発生した
光は導電性を有する顔料層８の顔料粒子を通過す
るうちに選択的な吸収を受けたのち、透明導電膜
の陽極６および透光性の基板５を透過することに
より、陽極基板側から光出力３となつて出る。こ
の場合、蛍光体９、透明導電膜の陽極６および透
光性の基板５は可視光域では殆どフラツトな分光
特性を示し、蛍光体９からの発光波長を望みの波
長に変換することができる。すなわち、カソード
側では発光色は酸化亜鉛蛍光体（ZnO：Zn）の
発光波長のみであるが、陽極基板側での発光色は
4800Åがピーク長となり、青色の波長変換ができ
る。しかも顔料の色は青色、緑色、黄色、橙色な
どがあるので、顔料を適宜選択することにより、
望みの発光色を有した蛍光面を得ることができ
る。また、顔料には金属塩、硫酸塩など種々のも
のが用いられる。例えば顔料にアルミン酸コバル
トを用いた場合カソード側からの光出力はその発
光波長が5050Åが主であり、4500Å（青色）成分
は少ないが、陽極基板側からの光出力３の発光波
長は4800Åがピーク波長となり、効果的に波長変
換される。 Next, the light emitting operation of the fluorescent display tube with the above configuration will be explained. First, when the zinc oxide phosphor 9 emits light with a slow electron beam, the light generated on the surface of the phosphor is selectively absorbed while passing through the pigment particles of the conductive pigment layer 8, and is then selectively absorbed by the transparent conductive layer 8. The light passes through the anode 6 and the transparent substrate 5, and exits as a light output 3 from the anode substrate side. In this case, the phosphor 9, the transparent conductive film anode 6, and the transparent substrate 5 exhibit almost flat spectral characteristics in the visible light range, and the wavelength of light emitted from the phosphor 9 can be converted to a desired wavelength. . In other words, on the cathode side, the emission color is only the emission wavelength of the zinc oxide phosphor (ZnO:Zn), but on the anode substrate side, the emission color is
The peak length is 4800 Å, and blue wavelength conversion is possible. Moreover, the colors of pigments include blue, green, yellow, orange, etc., so by selecting the pigment appropriately,
A phosphor screen with a desired luminescent color can be obtained. Furthermore, various pigments such as metal salts and sulfates are used. For example, when cobalt aluminate is used as a pigment, the light output from the cathode side has a main emission wavelength of 5050 Å, and the 4500 Å (blue) component is small, but the emission wavelength of light output 3 from the anode substrate side is 4800 Å. This becomes the peak wavelength and the wavelength is effectively converted.
通常は、低速電子線が酸化亜鉛蛍光体に当たる
と、この酸化亜鉛蛍光体に電子が徐々に蓄積さ
れ、その電位を下げて電子線の導入を阻害し、輝
度を低下させるように作用するが、本実施例では
酸化亜鉛蛍光体９に入つた電子は導電性を有する
顔料層８を経て陽極６に流れるので、このような
問題がなくなる。 Normally, when a low-velocity electron beam hits a zinc oxide phosphor, electrons are gradually accumulated in the zinc oxide phosphor, lowering its potential and inhibiting the introduction of the electron beam, reducing its brightness. In this embodiment, the electrons entering the zinc oxide phosphor 9 flow to the anode 6 via the conductive pigment layer 8, so this problem is eliminated.
以上詳細に説明したように、本発明に係る蛍光
表示管によれば、
(イ) 母体である蛍光体が一種類であるから、各色
によつて劣化特性が一定になり、動作途中での
変色が起らない、
(ロ) フイルタと発光する蛍光体が一体となつてい
るため、視差が生じないため、細かいパターン
の多色表示が可能になる、
(ハ) 陽極基板側から光が取り出されるため、発光
色の異なる光を効果的に取り出すことができ
る、
(ニ) 特に、蛍光体と陽極の間に導電性を有する顔
料層を設けたことにより、陽極と蛍光体との導
通を良好に保つことができ、その結果、陽極側
に電子が溜り難くなつて輝度の低下が少なくな
る、
などの効果がある。 As explained in detail above, according to the fluorescent display tube according to the present invention, (a) Since the base phosphor is one type, the deterioration characteristics are constant for each color, and discoloration during operation is prevented. (b) Since the filter and the emitting phosphor are integrated, there is no parallax, making it possible to display fine patterns in multiple colors. (c) Light is extracted from the anode substrate side. (d) In particular, by providing a conductive pigment layer between the phosphor and the anode, good conduction between the anode and the phosphor can be achieved. As a result, electrons are less likely to accumulate on the anode side, resulting in less reduction in brightness.
第１図は従来の蛍光表示管を示す一部概略断面
図、第２図は本発明に係る蛍光表示管の一実施例
を示す一部概略断面図である。
１……顔料混合蛍光体、２……陽極、３……光
出力、４……ガラス基板、５……透光性の基板、
６……透明導電膜の陽極、８……導電性を有する
顔料層、９……酸化亜鉛蛍光体層。
FIG. 1 is a partially schematic sectional view showing a conventional fluorescent display tube, and FIG. 2 is a partially schematic sectional view showing an embodiment of the fluorescent display tube according to the present invention. 1...Pigment mixed phosphor, 2...Anode, 3...Light output, 4...Glass substrate, 5...Transparent substrate,
6... Anode of transparent conductive film, 8... Pigment layer having conductivity, 9... Zinc oxide phosphor layer.
Claims (1)
た透明導電膜の陽極と、この陽極上に形成した導
電性を有する顔料層と、この層の上に塗布した酸
化亜鉛蛍光体とを備え、前記酸化亜鉛蛍光体の発
光が顔料粒子を通過して陽極基板側から表示させ
ることを特徴とする蛍光表示管。1 Comprising a light-transmitting substrate, an anode of a transparent conductive film formed on this substrate, a conductive pigment layer formed on this anode, and a zinc oxide phosphor coated on this layer. . A fluorescent display tube, characterized in that the light emitted from the zinc oxide phosphor passes through pigment particles and is displayed from the anode substrate side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5405982A JPS58169851A (en) | 1982-03-31 | 1982-03-31 | Fluorescent display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5405982A JPS58169851A (en) | 1982-03-31 | 1982-03-31 | Fluorescent display tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58169851A JPS58169851A (en) | 1983-10-06 |
| JPH023261B2 true JPH023261B2 (en) | 1990-01-23 |
Family
ID=12960038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5405982A Granted JPS58169851A (en) | 1982-03-31 | 1982-03-31 | Fluorescent display tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58169851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08266204A (en) * | 1995-03-31 | 1996-10-15 | Yoshio Kami | Inverted bait container with universal lid |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6226751A (en) * | 1985-07-25 | 1987-02-04 | Futaba Corp | Fluorescent character display tube and its manufacture |
| JP2738268B2 (en) * | 1993-07-12 | 1998-04-08 | 双葉電子工業株式会社 | Fluorescent display tube with color filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3004648C2 (en) * | 1980-02-08 | 1982-05-06 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Vacuum indicator |
-
1982
- 1982-03-31 JP JP5405982A patent/JPS58169851A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08266204A (en) * | 1995-03-31 | 1996-10-15 | Yoshio Kami | Inverted bait container with universal lid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58169851A (en) | 1983-10-06 |
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