JP3168733B2 - Phosphor screen of color cathode ray tube - Google Patents
Phosphor screen of color cathode ray tubeInfo
- Publication number
- JP3168733B2 JP3168733B2 JP29231992A JP29231992A JP3168733B2 JP 3168733 B2 JP3168733 B2 JP 3168733B2 JP 29231992 A JP29231992 A JP 29231992A JP 29231992 A JP29231992 A JP 29231992A JP 3168733 B2 JP3168733 B2 JP 3168733B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- green
- cathode ray
- ray tube
- color cathode
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims description 80
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000001056 green pigment Substances 0.000 claims description 11
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical group [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910000684 Cobalt-chrome Inorganic materials 0.000 claims description 2
- 239000010952 cobalt-chrome Substances 0.000 claims description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 2
- 230000000638 stimulation Effects 0.000 claims 1
- 239000000049 pigment Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 3
- CRHLEZORXKQUEI-UHFFFAOYSA-N dialuminum;cobalt(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Co+2].[Co+2] CRHLEZORXKQUEI-UHFFFAOYSA-N 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052771 Terbium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000001055 blue pigment Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000001054 red pigment Substances 0.000 description 2
- 238000007613 slurry method Methods 0.000 description 2
- IQVNEKKDSLOHHK-FNCQTZNRSA-N (E,E)-hydramethylnon Chemical compound N1CC(C)(C)CNC1=NN=C(/C=C/C=1C=CC(=CC=1)C(F)(F)F)\C=C\C1=CC=C(C(F)(F)F)C=C1 IQVNEKKDSLOHHK-FNCQTZNRSA-N 0.000 description 1
- -1 ZnS: Cu Chemical compound 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229910052950 sphalerite Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Landscapes
- Luminescent Compositions (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、コントラストのよい
カラー陰極線管の蛍光面に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent screen of a color cathode ray tube having good contrast.
【０００２】[0002]
【従来の技術】従来、カラー陰極線管の蛍光面は、スラ
リー法により緑，青，赤の蛍光膜パターンを形成してい
る。2. Description of the Related Art Conventionally, the fluorescent screen of a color cathode ray tube forms green, blue, and red fluorescent film patterns by a slurry method.
【０００３】すなわち、まずブラックマトックスを形成
したパネルに、まず緑色発光蛍光体をポリビニールアル
コール（ＰＶＡ）とニクロム酸アンモニウム（ＡＤＣ）
の混合溶液に懸濁させたスラリーを、パネル内面を上向
きにして過剰に塗布し、高速回転でスラリーを振り切
り、赤外線ヒーター，ブロワー等で乾燥を行い、シャド
ウマスクをパネルに装着して高圧水銀灯で露光を行い、
シャドウマスクを取り外して温水でスプレー現象を行
い、緑色発光蛍光体パターンを形成する。[0003] First, a green light-emitting phosphor is first applied to a panel formed with black matox by using polyvinyl alcohol (PVA) and ammonium dichromate (ADC).
Excessively apply the slurry suspended in the mixed solution of (1) with the panel inner surface facing upward, shake off the slurry at high speed, dry with an infrared heater, blower, etc., attach a shadow mask to the panel, and apply a high pressure mercury lamp. Exposure,
The shadow mask is removed and a spray phenomenon is performed with warm water to form a green light emitting phosphor pattern.
【０００４】次いで、青色発光蛍光体をＰＶＡとＡＤＣ
の混合溶液に懸濁させたスラリーを、緑色発光蛍光体の
場合と同様に、スラリー塗布，振り切り，乾燥現象を行
い青色発光蛍光体パターンを形成する。最後に、上記と
全く同様に赤色発光蛍光体パターンを形成する。[0004] Next, the blue light-emitting phosphor is converted to PVA and ADC.
The slurry suspended in the mixed solution of the above is subjected to slurry application, shaking-off, and drying phenomena in the same manner as in the case of the green light emitting phosphor to form a blue light emitting phosphor pattern. Finally, a red light emitting phosphor pattern is formed in exactly the same manner as described above.
【０００５】なお、蛍光体として、青色発光蛍光体には
青色光を透過させ、青色光以外の光を吸収する青色のア
ルミン酸コバルト顔料を付着させたＺｎＳ：Ａｇ蛍光体
が用いられ、赤色発光蛍光体には赤色光を透過させ、赤
色光以外を吸収する赤色のベンガラ顔料を付着させたＹ
2 Ｏ2 Ｓ：Ｅｕ蛍光体が用いられる。[0005] As the phosphor, a ZnS: Ag phosphor having a blue cobalt aluminate pigment that transmits blue light and absorbs light other than blue light is used as the blue light-emitting phosphor, and a red light-emitting phosphor is used. Y that has red phosphorescent pigment adhering to the phosphor that transmits red light and absorbs other than red light
A 2 O 2 S: Eu phosphor is used.
【０００６】従って青色，赤色の蛍光体から発光してい
る光はあまり減少せずパネル面方向に導き出されるのに
対し、パネル外からの光は、青色発光蛍光体パターンの
領域では青色以外の光を吸収し、赤色発光蛍光体パター
ンの領域では赤色以外の光を吸収するため、蛍光面での
反射が減少し、このことでコントラストが向上する。Accordingly, the light emitted from the blue and red phosphors is guided in the direction of the panel surface without being reduced so much, whereas the light from outside the panel is the light other than blue in the region of the blue light emitting phosphor pattern. In the area of the red light-emitting phosphor pattern, light other than red is absorbed, so that reflection on the phosphor screen is reduced, thereby improving the contrast.
【０００７】なお、ただ単にＺｎＳ：Ｃｕ，Ａｌ蛍光体
等の緑色発光蛍光体に緑色顔料を付着させたものを用い
ると、緑色は視感度が高いため緑色輝度の減少が激し
く、コントラスト向上の効果があまりないため、用いら
れていなかった。When a green light-emitting phosphor such as ZnS: Cu, Al phosphor or the like to which a green pigment is adhered is simply used, green has a high luminous efficiency, so that the green luminance is greatly reduced and the contrast is improved. It was not used because there was not much.
【０００８】[0008]
【発明が解決しようとする課題】ところで、このような
方法でつくられた蛍光面は、緑色蛍光体に顔料が付着し
ていないため、外光の反射率が高く、そのことがコント
ラストを悪くしているという欠点があった。By the way, the phosphor screen formed by such a method has a high reflectance of external light because the pigment is not attached to the green phosphor, which deteriorates the contrast. There was a drawback that.
【０００９】この発明は、コントラストの良い蛍光面を
得ることにある。An object of the present invention is to obtain a fluorescent screen having good contrast.
【００１０】[0010]
【課題を解決するための手段】この発明は、緑色発光の
蛍光面を２層構造とし、そのパネル面側の第１層を、Ｇ
ｄ2 Ｏ2 Ｓ：Ｔｂ蛍光体またはＹ2 Ｏ2 Ｓ：Ｔｂ蛍光体
に緑色顔料を付着させたものとし、第２層をＺｎＳ：Ｃ
ｕ，Ａｌ蛍光体またはＺｎＳ：Ｃｕ，Ａｕ，Ａｌ蛍光体
としたことを特徴とするカラー陰極線管の蛍光面であ
る。 According to the present invention, a green light-emitting phosphor screen has a two-layer structure, and the first layer on the panel surface side is formed of a G layer.
A green pigment is attached to the d 2 O 2 S: Tb phosphor or the Y 2 O 2 S: Tb phosphor , and the second layer is formed of ZnS: C.
u, Al phosphor or ZnS: Cu, Au, Al phosphor
The fluorescent screen of a color cathode ray tube
You.
【００１１】[0011]
【作用】上記の構成によると、Ｇｄ2 Ｏ2 Ｓ：Ｔｂ蛍光
体は比重が７．９、Ｙ2 Ｏ2 Ｓ：Ｔｂ蛍光体は比重が
４．９と、ＺｎＳ：Ｃｕ，Ａｌ蛍光体およびＺｎＳ：Ｃ
ｕ，Ａｕ，Ａｌ蛍光体の比重４．１に比較して高くなっ
ている。そして蛍光体層をスラリー法で形成する際に、
２種類の蛍光体の混合物をスラリーとして使用すると、
パネルに過剰に塗布して、スラリーを振り切るまでの時
間に比重の高い蛍光体が先にパネル面側に沈降し、比重
の低い蛍光体は後から沈降する。According to the above arrangement, the specific gravity of the Gd 2 O 2 S: Tb phosphor is 7.9, the specific gravity of the Y 2 O 2 S: Tb phosphor is 4.9, and the ZnS: Cu, Al phosphor and ZnS: C
The specific gravity of the u, Au, Al phosphor is higher than 4.1. And when forming the phosphor layer by the slurry method,
When a mixture of two phosphors is used as a slurry,
The phosphor having a high specific gravity is first settled on the panel surface side in the time required for applying the excessive amount to the panel and shaking off the slurry, and the phosphor having a low specific gravity is settled later.
【００１２】すなわち、この発明では比重の高い蛍光体
すなわちＧｄ2 Ｏ2 Ｓ：ＴｂまたはＹ2 Ｏ2 Ｓ：Ｔｂ蛍
光体に緑色顔料を付着させておくと、パネル面側に緑色
顔料付蛍光体層ができ、その後に緑色顔料なしのＺｎ
Ｓ：Ｃｕ，Ａｌ蛍光体またはＺｎＳ：Ｃｕ，Ａｕ，Ａｌ
蛍光体層ができる。That is, in the present invention, when a green pigment is attached to a phosphor having a high specific gravity, that is, Gd 2 O 2 S: Tb or Y 2 O 2 S: Tb phosphor, a phosphor with a green pigment is provided on the panel surface side. Layer is formed, followed by Zn without green pigment
S: Cu, Al phosphor or ZnS: Cu, Au, Al
A phosphor layer is formed.
【００１３】従って、パネル面側では緑色顔料により、
外光の反射率を低減でき、一方緑色発光の輝度もＺｎ
Ｓ：Ｃｕ，ＡｌまたはＺｎＳ：Ｃｕ，Ａｕ，Ａｌ蛍光体
に顔料がないため、この層での光の吸収がなく明るい緑
色発光が得られ、コントラストが非常に向上する。Therefore, the green color on the panel side is
The reflectance of external light can be reduced, while the luminance of green
Since there is no pigment in the S: Cu, Al or ZnS: Cu, Au, Al phosphor, bright green light is obtained without light absorption in this layer, and the contrast is greatly improved.
【００１４】[0014]
【実施例】以下、この発明について図面を参照して説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.
【００１５】図１は、この発明の一実施例のであるカラ
ー陰極線管の蛍光面の断面図であり、１はパネル、２は
ブラックマトリクス、３は緑色顔料付Ｇｄ2 Ｏ2 Ｓ：Ｔ
ｂ蛍光体、４はＺｎＳ：Ｃｕ，Ａｌ蛍光体、５はアルミ
酸コバルト顔料付ＺｎＳ：Ａｇ蛍光体、６はベンガラ顔
料付Ｙ2 Ｏ2 Ｓ：Ｅｕ蛍光体、７はアルミニウム膜であ
る。FIG. 1 is a cross-sectional view of a phosphor screen of a color cathode ray tube according to an embodiment of the present invention, wherein 1 is a panel, 2 is a black matrix, and 3 is Gd 2 O 2 S: T with green pigment.
b is a phosphor, 4 is a ZnS: Cu, Al phosphor, 5 is a ZnS: Ag phosphor with a cobalt aluminate pigment, 6 is a Y 2 O 2 S: Eu phosphor with a red iron pigment, and 7 is an aluminum film.
【００１６】次に、蛍光面の作製方法について説明す
る。Next, a method of manufacturing a phosphor screen will be described.
【００１７】１７型パネル１で、緑色発光蛍光体層を、
緑色顔料であるコバルト緑を付着させたＧｄ2 Ｏ2 Ｓ：
Ｔｂ蛍光体３が３０部とＺｎＳ：Ｃｕ，Ａｌ蛍光体４が
７０部の混合蛍光体を用い、青色発光蛍光体層を青色顔
料であるコバルト青顔料を付着させたＺｎＳ：Ａｇ蛍光
体５を用い、赤色発光蛍光体層を赤色顔料であるベンガ
ラ顔料を付着させたＹ2 Ｏ2 Ｓ：Ｅｕ蛍光体６を用い
て、３色蛍光体層パターンを形成した。In the 17-inch panel 1, the green light-emitting phosphor layer is
Gd 2 O 2 S to which a green pigment, cobalt green, is attached:
Using a mixed phosphor of 30 parts of Tb phosphor 3 and 70 parts of ZnS: Cu, Al phosphor 4, a ZnS: Ag phosphor 5 having a blue light emitting phosphor layer and a cobalt blue pigment as a blue pigment adhered thereto. A three-color phosphor layer pattern was formed using a Y 2 O 2 S: Eu phosphor 6 to which a red pigment, a red pigment, was applied.
【００１８】この蛍光体層を使用したカラーブラウン管
は、従来のものより緑色発光体層パターンの部分に緑色
顔料があるため外光の吸収が増加して、反射率が減少
し、加えて緑色の発光輝度もＺｎＳ：Ｃｕ，Ａｌ蛍光体
４層に顔料がないため、輝度の減少もわずかとなり、コ
ントラストが従来のものより２０％向上した。In a color cathode ray tube using this phosphor layer, the absorption of external light is increased due to the presence of a green pigment in the portion of the green light emitting layer pattern, the reflectance is reduced, and in addition, the green As for the emission luminance, since there was no pigment in the four layers of the ZnS: Cu, Al phosphor, the decrease in the luminance was slight, and the contrast was improved by 20% compared with the conventional one.
【００１９】[0019]
【実施例２】次に２１型パネルで、緑色発光蛍光体層
を、緑色顔料であるコバルト・クロム緑を付着させたＹ
2 Ｏ2 Ｓ：Ｅｕ蛍光体２０部とＺｎＳ：Ｃｕ，Ａｌ蛍光
体４が８０部の混合蛍光体を用いて形成した。なお、青
色，赤色発光蛍光体層は、実施例１と同様の方法で形成
した。このようにして形成した蛍光膜は、従来よりコン
トラストが２０％向上した。EXAMPLE 2 Next, on a 21-inch panel, a green light-emitting phosphor layer was formed by attaching a green pigment of cobalt chrome green to Y.
20 parts of 2 O 2 S: Eu phosphor and ZnS: Cu, Al phosphor 4 were formed using 80 parts of a mixed phosphor. The blue and red light emitting phosphor layers were formed in the same manner as in Example 1. The thus-formed fluorescent film has a 20% improvement in contrast as compared with the related art.
【００２０】なお、上記実施例では緑色顔料を付着させ
る緑色蛍光体として、Ｇｄ2 Ｏ2 Ｓ：Ｔｂ蛍光体とＹ2
Ｏ2 Ｓ：Ｔｂ蛍光体を使用した具体例をもって述べた
が、これに替えてＬａ2 Ｏ2 Ｓ：Ｔｂ蛍光体またはＹ3
Ａｌ5 Ｏ12：Ｔｂ蛍光体を用いてもよい。In the above-described embodiment, Gd 2 O 2 S: Tb phosphor and Y 2
Although a specific example using an O 2 S: Tb phosphor has been described, the La 2 O 2 S: Tb phosphor or Y 3
Al 5 O 12 : Tb phosphor may be used.
【００２１】[0021]
【発明の効果】以上説明したように、この発明は、緑色
発光蛍光面として、緑色顔料付のＧｄ2 Ｏ2 Ｓ：Ｔｂ蛍
光体またはＹ2 Ｏ2 Ｓ：Ｔｂ蛍光体と、ＺｎＳ：Ｃｕ，
Ａｌ蛍光体またはＺｎＳ：Ｃｕ，Ａｕ，Ａｌ蛍光体の、
２重の層を形成することにより、外光の反射率を下げ発
光輝度の減少をほとんどくなくできるため、コントラス
トを上げる効果がある。As described above, according to the present invention, a green pigmented Gd 2 O 2 S: Tb or Y 2 O 2 S: Tb phosphor and a ZnS: Cu,
Al phosphor or ZnS: Cu, Au, Al phosphor,
By forming the double layer, the reflectivity of external light can be reduced and the luminance can be hardly reduced, so that the effect of increasing the contrast can be obtained.
【図１】 この発明の一実施例であるカラー陰極線管の
蛍光面の構造を示す断面図。FIG. 1 is a sectional view showing a structure of a fluorescent screen of a color cathode ray tube according to an embodiment of the present invention.
１ パネル ２ ブラックマトリクス ３ コバルト緑付着Ｇｄ2 Ｏ2 Ｓ：Ｔｂ蛍光体 ４ ＺｎＳ：Ｃｕ，Ａｌ蛍光体 ５ アルミン酸コバルト付着ＺｎＳ：Ａｇ ６ ベンガラ付着Ｙ2 Ｏ2 Ｓ：Ｅｕ蛍光体 ７ アルミニウム膜Reference Signs List 1 panel 2 black matrix 3 cobalt green adhered Gd 2 O 2 S: Tb phosphor 4 ZnS: Cu, Al phosphor 5 cobalt aluminate adhered ZnS: Ag 6 bengara adhered Y 2 O 2 S: Eu phosphor 7 aluminum film
Claims (3)
の蛍光面において、緑色発光の蛍光面を２層構造とし、
そのパネル面側の第１層を、Ｇｄ2 Ｏ2 Ｓ：Ｔｂ蛍光体
またはＹ2 Ｏ2 Ｓ：Ｔｂ蛍光体に緑色顔料を付着させた
ものとし、第２層をＺｎＳ：Ｃｕ，Ａｌ蛍光体またはＺ
ｎＳ：Ｃｕ，Ａｕ，Ａｌ蛍光体としたことを特徴とする
カラー陰極線管の蛍光面。1. A phosphor screen of a three-color color cathode ray tube which emits light upon stimulation with a cathode ray, has a green phosphor screen having a two-layer structure,
The first layer on the panel surface side is made of Gd 2 O 2 S: Tb phosphor or Y 2 O 2 S: Tb phosphor to which a green pigment is attached , and the second layer is ZnS: Cu, Al phosphor. Body or Z
nS: Cu, Au, fluorescent screen of a color cathode ray tube, characterized in that the Al phosphor.
Ｏ2 Ｓ：Ｔｂ蛍光体に替えてＬａ2Ｏ2 Ｓ：Ｔｂ蛍光体
またはＹ3 Ａｌ5 Ｏ12：Ｔｂ蛍光体を用いたことを特徴
とする請求項１記載のカラー陰極線管の蛍光面。2. The Gd 2 O 2 S: Tb phosphor or Y 2
O 2 S: Tb instead of phosphor La 2 O 2 S: Tb phosphor or Y 3 Al 5 O 12: fluorescent screen of a color cathode ray tube according to claim 1, characterized by using a Tb phosphor.
・クロム緑であることを特徴とする請求項１または請求
項２記載のカラー陰極線管の蛍光面。3. The phosphor screen of a color cathode ray tube according to claim 1, wherein said green pigment is cobalt green or cobalt chrome green.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29231992A JP3168733B2 (en) | 1992-10-30 | 1992-10-30 | Phosphor screen of color cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29231992A JP3168733B2 (en) | 1992-10-30 | 1992-10-30 | Phosphor screen of color cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06139951A JPH06139951A (en) | 1994-05-20 |
| JP3168733B2 true JP3168733B2 (en) | 2001-05-21 |
Family
ID=17780240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29231992A Expired - Fee Related JP3168733B2 (en) | 1992-10-30 | 1992-10-30 | Phosphor screen of color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3168733B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58133426U (en) * | 1982-03-02 | 1983-09-08 | 神沢 博 | Core layer material |
| JP5241070B2 (en) * | 2006-01-24 | 2013-07-17 | 株式会社日立製作所 | Image display device |
-
1992
- 1992-10-30 JP JP29231992A patent/JP3168733B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06139951A (en) | 1994-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |