JPH04171633A - Cathode-ray tube for color display - Google Patents
Cathode-ray tube for color displayInfo
- Publication number
- JPH04171633A JPH04171633A JP30006190A JP30006190A JPH04171633A JP H04171633 A JPH04171633 A JP H04171633A JP 30006190 A JP30006190 A JP 30006190A JP 30006190 A JP30006190 A JP 30006190A JP H04171633 A JPH04171633 A JP H04171633A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- phosphors
- light
- green
- color
- 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
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 58
- 239000002245 particle Substances 0.000 claims description 19
- 230000000638 stimulation Effects 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 6
- 239000011521 glass Substances 0.000 abstract description 2
- 239000003086 colorant Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 108010010803 Gelatin Proteins 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007613 slurry method Methods 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、文字や図形を表示するカラーデイスプレィ用
陰極線管、特にその蛍光面に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cathode ray tube for color display that displays characters and figures, and particularly to its phosphor screen.
従来、コンピュータの端末や測定器、制御機器の表示に
用いられるカラーディスプレイ用陰極線管の蛍光面は、
通常商用テレビジョンに使用されている３色蛍光体、す
なわち緑色発光蛍光体にはＺｎＳ：Ｃｕ、Ａｕ、Ａ、ｆ
ｆ蛍光体またはＺｎＳ：Ｃｕ Ａ １蛍光体、青色発光
蛍光体にはＺｎＳ：Ａｇ蛍光体、赤色発光蛍光体には￥
２０２Ｓ：Ｅｕ蛍光体が用いられていた。Traditionally, the phosphor screens of color display cathode ray tubes used for displaying computer terminals, measuring instruments, and control equipment are
The three-color phosphors commonly used in commercial televisions, namely green-emitting phosphors, include ZnS: Cu, Au, A, and f.
f phosphor or ZnS:Cu A 1 phosphor, ZnS:Ag phosphor for blue emitting phosphor, ￥ for red emitting phosphor
202S:Eu phosphor was used.
しかし最近商用の放送受像テレビジョンに使用せず、文
字や図形を表示する目的に使用する場合は、必ずしも従
来のカラー放送受像用の３原色と同じ色を用いないで、
青色を若干白色によせてライトブルー色にしたもの、あ
るいは白色にしたものが作られるようになった。この理
由は青色は視感度が低いなめ輝度が緑色、赤色に比較し
て低く、青色で文字や図形を表示しても非常に見にくい
ためである。従って、青色のかわりに青色発光蛍光体（
ＺｎＳ：Ａｇ）に緑色発光蛍光体（ＺｎＳ ： Ｃｕ、
Ａｕ、ＡＪ７またはＧｄ２Ｏ２Ｓ：Ｔｂ）と赤色発光蛍
光体（Ｙ ２０２Ｓ：Ｅｕ）を混合してライトブルー色
または白色とじて一つの発光素子を形成していた。However, recently, when used for the purpose of displaying characters and graphics rather than for commercial broadcast reception television, it is not necessary to use the same colors as the three primary colors used for conventional color broadcast reception.
Light blue or white versions were created by changing the blue color slightly to white. The reason for this is that blue has low visual sensitivity and luminance is lower than that of green and red, making it extremely difficult to see even if letters or figures are displayed in blue. Therefore, instead of blue, blue-emitting phosphor (
Green-emitting phosphor (ZnS:Cu, ZnS:Ag)
One light emitting element was formed by mixing light blue or white light emitting phosphor (Au, AJ7 or Gd2O2S:Tb) and red light emitting phosphor (Y202S:Eu).
このようなカラーディスクプレイ用陰極線管の発光面は
、一般にフェース面パネルの側に光吸収用ブラックマト
リクスのホールを形成した後、緑色発光蛍光体をポリビ
ニルアルコールとニクロム酸アンモニウム溶液に懸濁さ
せたスラリーをパネル内面に塗布し赤外線ヒータで乾燥
させシャドウマスクを装着して紫外線で露光を行ない、
温水で現像して線蛍光膜パターンを形成し、青色、緑色
、赤色の混合蛍光体によって緑色と同様の方法でライト
ブルー蛍光膜パターンを形成し、赤色発光蛍光体につい
ても同様の方法で赤蛍光膜パターンを形成し、その背面
に有機フィルムを形成した後、アルミニウムの蒸着膜を
形成した製作される。The light-emitting surface of such a color display cathode ray tube is generally made by forming holes in a black matrix for light absorption on the side of the face panel, and then suspending a green-emitting phosphor in a solution of polyvinyl alcohol and ammonium dichromate. Apply the slurry to the inside of the panel, dry it with an infrared heater, attach a shadow mask, and expose it to ultraviolet light.
A linear fluorescent film pattern is formed by developing with hot water, and a light blue fluorescent film pattern is formed using the same method as for green using a mixed phosphor of blue, green, and red, and a red fluorescent film pattern is formed using the same method for the red emitting phosphor. A film pattern is formed, an organic film is formed on the back side of the film pattern, and then an aluminum vapor-deposited film is formed.
このように従来は、青色と緑色、赤色の３種類の蛍光体
を混合して１つの発光素子を形成するので、３種類の蛍
光体をスラリーとして一種に分散させる際、微細な粒子
の凝集か起こり、青色、緑色、赤色の蛍光体粒子が数十
から数百ミクロンの大きさで凝集した状態の蛍光体膜と
なって−様なライトフルー色に見えず、青色と緑色と赤
色の混合されたものとして見える欠点があった。Conventionally, one light-emitting element is formed by mixing three types of phosphors: blue, green, and red. This occurs, forming a phosphor film in which blue, green, and red phosphor particles are aggregated in a size of several tens to hundreds of microns. There were some flaws that could be seen as an improvement.
本発明は、陰極線刺激て発光する３色蛍光面を有する陰
極線管において、発光素子の１つがＺｎ：Ａｇ蛍光体の
表面に小粒子の緑色発光蛍光体または小粒子の赤色発光
蛍光体を少なくとも１つ付着させた蛍光体を用いて蛍光
膜を形成したことを特徴とする。The present invention provides a cathode ray tube having a three-color phosphor screen that emits light upon cathode ray stimulation, in which one of the light emitting elements has at least one small particle of green-emitting phosphor or small particle of red-emitting phosphor on the surface of a Zn:Ag phosphor. The fluorescent film is characterized by forming a fluorescent film using the attached fluorescent substance.
次に本発明を実施例により説明する。 Next, the present invention will be explained by examples.
実施例 １
第１図に示すように、最初にガラスパネル１に従来から
行なわれている方法で光吸収用のフラッフマトリクス２
を形成する。そして緑色発光素子を発光色度のブラック
マトリクス２を形成する。Example 1 As shown in FIG. 1, a fluff matrix 2 for light absorption is first applied to a glass panel 1 using a conventional method.
form. Then, a black matrix 2 of luminescent chromaticity is formed from the green light emitting elements.
そして緑色発光素子を発光色度ｘ＝０．２８０゜ｙ＝０
．６００のＺｎＳ：Ｃｕ、Ａ！２蛍光体５を用い、赤色
発光素子を発光色度がｘ＝０．６３０゜ｙ＝０．３３０
のＹ２Ｏ，、Ｓ：Ｅｕ蛍光体を用い、ライトブルー発光
素子をＺ ｎ Ｓ ： Ａ ｇ蛍光体粒子を表面に小粒
子のＧｄ２Ｏ２Ｓ：Ｔｂと小粒子のＹ２Ｏ２Ｓ：Ｅｕを
付着させた蛍光体を用いてスラリー法で３色蛍光膜パタ
ーンを形成した。ライトブルー色発光素子形成に使用し
た蛍光体は、平均粒径８μ発光色度ｘ＝０．１５０．ｙ
＝０．０７０の青色発光のＺｎＳ：Ａｇ蛍光体１００部
をゼラチン溶液に分散させ、平均粒径２μ１発光色度ｘ
＝０．３３０．、Ｙ＝０．５６０の緑色発光のＧｄ２Ｏ
２Ｓ ： Ｔｂ蛍光体２０部と平均粒径１゜５μ発光色
度ｘ＝０．６３０．ｙ＝０．３３０の赤色発光のＹ２Ｏ
２Ｓ：Ｅｕ蛍光体２０部をポリビニルピロリ１くン溶液
に分散させ、この２つの懸濁液を混合攪排して沈澱させ
て蛍光体を作成した。Then, the green light emitting element has a luminous chromaticity x=0.280゜y=0
．． 600 ZnS: Cu, A! 2 phosphor 5, the red light emitting element has an emission chromaticity of x=0.630°y=0.330.
A light blue light-emitting element was created using a Y2O,,S:Eu phosphor of A three-color fluorescent film pattern was formed using a slurry method. The phosphor used to form the light blue color light emitting element had an average particle size of 8μ and an emission chromaticity x=0.150. y
=0.070 blue-emitting ZnS:Ag phosphor is dispersed in a gelatin solution, and the average particle size is 2μ1 and the emission chromaticity x
=0.330. , Y=0.560 green-emitting Gd2O
2S: 20 parts of Tb phosphor, average particle size 1°5μ, emission chromaticity x=0.630. Y2O with red light emission at y=0.330
A phosphor was prepared by dispersing 20 parts of a 2S:Eu phosphor in a solution of 1 ton of polyvinylpyrroli, and mixing and stirring the two suspensions to precipitate the phosphor.
この沈澱した蛍光体は、ゼラチンとポリビニルピロリド
ンの作用によりＺｎＳ：Ａｇ蛍光体の表面に小粒子のＧ
ｄ２０，２ Ｓ ： Ｔｂ蛍光体と、小粒子のＹ２Ｏ２
Ｓ：Ｅｕ蛍光体が付着する。この蛍光体を用いて作成し
たライトブルーの発光素子は、＝５−
発光色度かｘ−０，２２０，ｙ＝ｏ、１７０てムラなく
−様なライトブルー色の蛍光面が得られた。This precipitated phosphor forms small particles of G on the surface of the ZnS:Ag phosphor due to the action of gelatin and polyvinylpyrrolidone.
d20,2 S: Tb phosphor and small particles of Y2O2
S: Eu phosphor is attached. A light blue light emitting device made using this phosphor had an even light blue phosphor screen with an emission chromaticity of =5 - x - 0, 220, y = o, 170.
この蛍光面は青色発光蛍光体の表面に小粒子の緑色、赤
色蛍光体が付着しているため３色が肉眼で見わけられず
−様なライトフルー色となった。This phosphor screen had small particles of green and red phosphors attached to the surface of the blue-emitting phosphor, so the three colors were indistinguishable to the naked eye and had a light-like color.
実施例 ２
緑色発光素子と赤色発光素子は実施例１と同様な方法で
作成し、白色発光素子をＺｎＳ：Ａｇ蛍光体粒子の表面
に小粒子のＺｎＳ：Ｃｕ、Ａｕ。Example 2 A green light-emitting element and a red light-emitting element were created in the same manner as in Example 1, and a white light-emitting element was formed by coating small particles of ZnS:Cu, Au on the surface of ZnS:Ag phosphor particles.
Ａρを付着させた蛍光体を用いてスラリー法で３色蛍光
膜パターンを作成した。白色発光素子形成に使用した蛍
光体は平均粒径８μ１発光色度ｘ−〇、１５０．ｙ＝０
．０７０の青色発光のＺｎＳ：Ａｇ蛍光体１００部と平
均粒径２μ１発光色度ｘ−０，３２０，ｙ＝＝Ｑ、５８
０の緑色発光のＺｎＳ：Ｃｕ、Ａｕ、Ａｆｆｌ蛍光体４
０部を実施例１と同様の方法で作成した。この蛍光体を
用いて作成した発光素子は、発光色度ｘ＝０．２６０゜
ｙ＝０．３’６０で色ムラのない−様な白色の発光素子
か得られた。A three-color phosphor film pattern was created by a slurry method using a phosphor to which Aρ was attached. The phosphor used to form the white light emitting element had an average particle size of 8μ1, an emission chromaticity of x-〇, and 150. y=0
．． 070 blue-emitting ZnS:Ag phosphor 100 parts and average particle size 2μ1 emission chromaticity x-0,320,y==Q,58
0 green emitting ZnS:Cu, Au, Affl phosphor 4
0 copies were prepared in the same manner as in Example 1. A light-emitting device fabricated using this phosphor had an emission chromaticity of x = 0.260° and y = 0.3'60, and was a white light-emitting device with no color unevenness.
以上説明したように本発明によれば、色ムラのない−様
なライトブルー色または白色が得られるため非常に有用
である。As explained above, according to the present invention, it is possible to obtain a light blue color or white color without color unevenness, which is very useful.
第１図は本発明の実施例１−の蛍光面構造を示ず断面図
、第２図は実施例１と実施例２の色度を示す図である。
１・・・パネル、２・・ブラックマトリクス、３・・・
ＺｎＳ：Ａｇ蛍光体、４−＝ Ｇ ｄ ２０２Ｓ：Ｔｂ
小粒子蛍光体、５・・・Ｙ２０２ Ｓ ： Ｅ ｕ小粒
子蛍光体、６・・・ＺｎＳ：Ｃｕ、Ａで蛍光体、７・・
・Ｙ２Ｏ２Ｓ：Ｅｕ蛍光体、８ ・Ａ 、＆膜、９−Ｚ
ｎＳ：Ｃｕ、Ａ、Ｒ蛍光体色度点、１０−Ｙ２Ｏ２Ｓ
：Ｅｕ蛍光体色度点、１１・・・小粒子のＧｄ２Ｏ２Ｓ
Ｔｂと小粒子のＹ２Ｏ２Ｓ：Ｅｕを付着させたＺｎＳ
：Ａｇ蛍光体色度点。FIG. 1 is a cross-sectional view of Example 1 of the present invention without showing the phosphor screen structure, and FIG. 2 is a diagram showing the chromaticity of Example 1 and Example 2. 1...Panel, 2...Black matrix, 3...
ZnS:Ag phosphor, 4-=G d 202S:Tb
Small particle phosphor, 5...Y202 S: Eu small particle phosphor, 6...ZnS:Cu, A phosphor, 7...
・Y2O2S: Eu phosphor, 8 ・A, & film, 9-Z
nS: Cu, A, R phosphor chromaticity point, 10-Y2O2S
:Eu phosphor chromaticity point, 11...Small particle Gd2O2S
Tb and small particles of Y2O2S: ZnS with Eu attached
:Ag phosphor chromaticity point.
Claims (1)
おいて、発光素子の１つがＺｎＳ：Ａｇ蛍光体の表面に
小粒子の緑色発光蛍光体または小粒子の赤色発光蛍光体
を少なくとも１つ付着させた蛍光体を用いて形成されて
いることを特徴とするカラーディスプレイ用陰極線管。In a cathode ray tube having a three-color phosphor screen that emits light upon cathode ray stimulation, one of the light emitting elements has at least one small particle green emitting phosphor or small particle red emitting phosphor attached to the surface of the ZnS:Ag phosphor. A cathode ray tube for color display, characterized in that it is formed using a phosphor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30006190A JPH04171633A (en) | 1990-11-06 | 1990-11-06 | Cathode-ray tube for color display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30006190A JPH04171633A (en) | 1990-11-06 | 1990-11-06 | Cathode-ray tube for color display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04171633A true JPH04171633A (en) | 1992-06-18 |
Family
ID=17880228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30006190A Pending JPH04171633A (en) | 1990-11-06 | 1990-11-06 | Cathode-ray tube for color display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04171633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100322606B1 (en) * | 1999-06-14 | 2002-03-18 | 구자홍 | Display Device with Electrode formed Micro-hole |
-
1990
- 1990-11-06 JP JP30006190A patent/JPH04171633A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100322606B1 (en) * | 1999-06-14 | 2002-03-18 | 구자홍 | Display Device with Electrode formed Micro-hole |
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