JPH0652808A - Color picture tube - Google Patents
Color picture tubeInfo
- Publication number
- JPH0652808A JPH0652808A JP20487292A JP20487292A JPH0652808A JP H0652808 A JPH0652808 A JP H0652808A JP 20487292 A JP20487292 A JP 20487292A JP 20487292 A JP20487292 A JP 20487292A JP H0652808 A JPH0652808 A JP H0652808A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- light emission
- picture tube
- color picture
- 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
Landscapes
- Luminescent Compositions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、緑色発光蛍光体膜の発
光色度をシフトさせ、シアン色側の色再現範囲を拡大せ
しめたカラー受像管に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color picture tube in which the luminescent chromaticity of a green light emitting phosphor film is shifted and the color reproduction range on the cyan side is expanded.
【０００２】[0002]
【従来の技術】一般に、カラー受像管の蛍光面を構成す
る３種の蛍光体膜には、赤色発光用としてＹ2Ｏ2Ｓ：Ｅ
ｕ蛍光体またはＹ2Ｏ3：Ｅｕ蛍光体が、緑色発光用とし
てＺｎＳ：Ｃｕ，Ａｌ蛍光体またはＺｎＳ：Ｃｕ，Ａ
ｕ，Ａｌ蛍光体が、そして、青色発光用としてＺｎＳ：
Ａｇ蛍光体がそれぞれ用いられている。2. Description of the Related Art Generally, three types of phosphor films constituting a phosphor screen of a color picture tube include Y 2 O 2 S: E for red emission.
The u phosphor or Y 2 O 3 : Eu phosphor is a ZnS: Cu, Al phosphor or ZnS: Cu, A phosphor for green emission.
u, Al phosphor, and ZnS: for blue emission:
Ag phosphors are used respectively.
【０００３】[0003]
【発明が解決しようとする課題】図１に示すＣＩＥ色度
図において、色度点ａ，ｂ，ｃを結ぶ三角形Ａは現用カ
ラー受像管の代表的な蛍光面の色度範囲を示しており、
三角形Ａは顔料、染料およびインクの色度範囲Ｂを完全
にはカバーしていない。そして、そのはみ出し部分はカ
ラー受像管による色の再現ができない範囲であり、それ
がシアン色側で大きいという課題があった。また、緑色
発光蛍光体、青色発光蛍光体および赤色発光蛍光体のう
ち、緑色発光蛍光体の色度がスペクトル軌跡Ｄからもっ
とも離れていることから、緑色の刺激純度（色純度）が
もっとも低いという課題もあった。In the CIE chromaticity diagram shown in FIG. 1, a triangle A connecting chromaticity points a, b and c indicates a chromaticity range of a typical fluorescent screen of a current color picture tube. ,
The triangle A does not completely cover the chromaticity range B of pigments, dyes and inks. Then, there is a problem that the protruding portion is a range in which the color cannot be reproduced by the color picture tube, and it is large on the cyan side. Further, among the green light emitting phosphor, the blue light emitting phosphor and the red light emitting phosphor, since the chromaticity of the green light emitting phosphor is farthest from the spectrum locus D, it is said that the green stimulation purity (color purity) is the lowest. There were also challenges.
【０００４】一方、カラー受像管の蛍光面の特性には色
純度のほかに、輝度、残光時間および寿命などがある。
Ｚｎ2ＳｉＯ4：Ｍｎを用いた緑色発光蛍光体の色度はｘ
／ｙ＝０．２０５／０．７００であり、色純度は高いも
のの、残光時間が長いために尾引き現象を生じ、画質を
損なう短所がある。また、Ｙ2Ｏ2：Ｐｒを用いた緑色蛍
光体の色度はｘ／ｙ＝０．１９／０．６７であり、色純
度が高い反面、その輝度は現用のＺｎＳ：Ｃｕ，Ａｌ緑
色蛍光体の約１／５である。On the other hand, the characteristics of the fluorescent screen of a color picture tube include brightness, afterglow time and life in addition to color purity.
The chromaticity of the green light emitting phosphor using Zn 2 SiO 4 : Mn is x
Although /y=0.205/0.700, the color purity is high, but the tailing phenomenon occurs due to the long afterglow time, and the image quality is impaired. Further, the chromaticity of the green phosphor using Y 2 O 2 : Pr is x / y = 0.19 / 0.67, and although the color purity is high, the brightness thereof is ZnS: Cu, Al green phosphor of the current one. It is about 1/5 of the body.
【０００５】[0005]
【課題を解決するための手段】本発明に係るカラー受像
管では、緑色発光の蛍光体膜の発光色度（ＣＩＥ）をス
ペクトル軌跡の方向へシフトさせ、ｘ＝０．２１±０．
０２、ｙ＝０．６５±０．０２の範囲内ならしめる。か
かる緑色発光蛍光体膜は、αＺｎＳ：Ｃｕ，Ａｌ蛍光体
と、Ｚｎ2ＳｉＯ4：Ｍｎ蛍光体との混合物によって得る
ことができる。In the color picture tube according to the present invention, the emission chromaticity (CIE) of the green-emitting phosphor film is shifted in the direction of the spectrum locus, and x = 0.21 ± 0.
02, y = 0.65 ± 0.02. Such a green light emitting phosphor film can be obtained by a mixture of αZnS: Cu, Al phosphor and Zn 2 SiO 4 : Mn phosphor.
【０００６】[0006]
【作用】このように構成されたカラー受像管では、赤色
発光蛍光体膜の色度点と緑色発光蛍光体膜の色度点とを
結ぶ延長方向へ緑色発光蛍光体膜の色度を求める結果、
黄色側の色再現範囲を損なうことなくシアン側の色再現
範囲を拡大せしめることができる。また、緑色発光蛍光
体膜の色純度を高めることができる。With the color picture tube thus constructed, the chromaticity of the green light emitting phosphor film is obtained in the extension direction connecting the chromaticity point of the red light emitting phosphor film and the chromaticity point of the green light emitting phosphor film. ,
The color reproduction range on the cyan side can be expanded without impairing the color reproduction range on the yellow side. In addition, the color purity of the green light emitting phosphor film can be increased.
【０００７】[0007]
【実施例】つぎに本発明を、２１インチ・サイズのシャ
ドウマスク型カラー受像管に適用した実施例とともに説
明する。このカラー受像管は緑色発光、青色発光および
赤色発光の３種の微細なストライプ状蛍光体膜群を有し
ている。緑色発光蛍光体膜の発光色度（ＣＩＥ）はｘ＝
０．２１±０．０２、ｙ＝０．６５±０．０２の範囲内
に設定されており、そのために、六方晶系の硫化亜鉛
（ＺｎＳ）を母体として銅（Ｃｕ）およびアルミニウム
（Ａｌ）で付活したαＺｎＳ：Ｃｕ，Ａｌ蛍光体４０％
（重量比）と、市販のＰ１蛍光体すなわちＺｎ2Ｓｉ
Ｏ4：Ｍｎ蛍光体６０％（重量比）との混合物を用いて
形成された緑色発光蛍光体膜を有している。また、青色
発光蛍光体膜は市販のＺｎＳ；Ａｇ蛍光体（青色顔料付
き）を用いて形成されており、赤色発光蛍光体膜は市販
のＹ2Ｏ2Ｓ；Ｅｕ蛍光体（赤色顔料付き）を用いて形成
されており、かかるカラー受像管の色度は、図１の色度
点ａ，ｂ，ｄを結ぶ三角形Ｅで表される。EXAMPLES The present invention will be described below with reference to examples in which it is applied to a 21-inch size shadow mask type color picture tube. This color picture tube has three kinds of fine stripe phosphor film groups for green light emission, blue light emission and red light emission. The emission chromaticity (CIE) of the green-emitting phosphor film is x =
0.21 ± 0.02 and y = 0.65 ± 0.02, so that hexagonal zinc sulfide (ZnS) is used as a base material for copper (Cu) and aluminum (Al). 40% of αZnS: Cu, Al phosphor activated by
(Weight ratio) and a commercially available P1 phosphor, namely Zn 2 Si
It has a green emitting phosphor film formed using a mixture with O 4 : Mn phosphor 60% (weight ratio). The blue light emitting phosphor film is formed by using a commercially available ZnS; Ag phosphor (with a blue pigment), and the red light emitting phosphor film is a commercially available Y 2 O 2 S; Eu phosphor (with a red pigment). The chromaticity of the color picture tube is represented by a triangle E connecting the chromaticity points a, b, and d in FIG.
【０００８】硫化亜鉛には、高温型（六方晶系）と低温
型（立方晶系）との２種の結晶型が存在する。発光に関
与するバンドギャップは高温型硫化亜鉛（αＺｎＳ）の
方が低温型硫化亜鉛（βＺｎＳ）よりも若干大きく、発
光ピークは短波長（高エネルギー）側へ移動している。
そこで、ＺｎＳ：Ｃｕ，Ａｌ蛍光体の焼成温度を結晶転
移温度（１，０２０℃）よりも高い１，１００℃で焼成
したところ、表１のＡに示すような発光特性（電子線励
起による）を有する緑色発光蛍光体膜を得ることができ
た。There are two types of zinc sulfide, a high temperature type (hexagonal system) and a low temperature type (cubic system). The band gap involved in light emission is slightly larger in high temperature type zinc sulfide (αZnS) than in low temperature type zinc sulfide (βZnS), and the emission peak shifts to the short wavelength (high energy) side.
Then, when the firing temperature of the ZnS: Cu, Al phosphor was fired at 1,100 ° C. higher than the crystal transition temperature (1,020 ° C.), the emission characteristics as shown in A of Table 1 (by electron beam excitation) It was possible to obtain a green-emitting phosphor film having
【０００９】[0009]
【表１】 [Table 1]
【００１０】長残光性のＺｎ2ＳｉＯ4：Ｍｎ蛍光体に、
短残光性のαＺｎＳ：Ｃｕ，Ａｌ蛍光体を混合したの
で、尾引き現象は著しく緩和される。前述の実施例で
は、顔料付きの蛍光体を用いたが、かかる顔料を有しな
い蛍光体を用いてもなんら支障がない。For a long afterglow Zn 2 SiO 4 : Mn phosphor,
Since the short-afterglow αZnS: Cu, Al phosphor is mixed, the tailing phenomenon is remarkably alleviated. In the above-mentioned embodiments, the phosphor with a pigment is used, but there is no problem even if the phosphor without such a pigment is used.
【００１１】[0011]
【発明の効果】以上のように本発明によると、黄色側の
色再現を損なうことなくシアン側の色再現範囲を拡大で
きるのみならず、緑色発光蛍光体の色純度を高めること
ができる。また、尾引き現象もほとんど認められない。As described above, according to the present invention, not only the color reproduction range on the cyan side can be expanded without impairing the color reproduction on the yellow side, but also the color purity of the green-emitting phosphor can be increased. Also, the trailing phenomenon is hardly observed.
【図１】本発明のカラー受像管の色度特性を、その他の
色度特性と比較して示すＣＩＥ色度図FIG. 1 is a CIE chromaticity diagram showing chromaticity characteristics of a color picture tube of the present invention in comparison with other chromaticity characteristics.
Claims (2)
の微細な蛍光体膜群を散設してなる蛍光面を備え、緑色
発光の蛍光体膜の発光色度（ＣＩＥ）が、ｘ＝０．２１
±０．０２、ｙ＝０．６５±０．０２の範囲内にあるこ
とを特徴とするカラー受像管。1. A phosphor screen having three kinds of fine phosphor film groups of green light emission, blue light emission and red light emission scattered, wherein the emission chromaticity (CIE) of the green light emission phosphor film is x. = 0.21
A color picture tube characterized by being in the range of ± 0.02, y = 0.65 ± 0.02.
鉛（ＺｎＳ）を母体として銅（Ｃｕ）およびアルミニウ
ム（Ａｌ）で付活されたαＺｎＳ：Ｃｕ，Ａｌ蛍光体
と、珪酸亜鉛（Ｚｎ2ＳｉＯ4）を母体としてマンガン
（Ｍｎ）で付活されたＺｎ2ＳｉＯ4：Ｍｎ蛍光体との混
合物からなることを特徴とする請求項１記載のカラー受
像管。2. An αZnS: Cu, Al phosphor in which a green light-emitting phosphor film is activated with copper (Cu) and aluminum (Al) using hexagonal zinc sulfide (ZnS) as a matrix, and zinc silicate. The color picture tube according to claim 1, wherein the color picture tube comprises a mixture of (Zn 2 SiO 4 ) and a Zn 2 SiO 4 : Mn phosphor activated with manganese (Mn).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20487292A JPH0652808A (en) | 1992-07-31 | 1992-07-31 | Color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20487292A JPH0652808A (en) | 1992-07-31 | 1992-07-31 | Color picture tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0652808A true JPH0652808A (en) | 1994-02-25 |
Family
ID=16497799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20487292A Pending JPH0652808A (en) | 1992-07-31 | 1992-07-31 | Color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0652808A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100361813B1 (en) * | 2000-05-17 | 2002-11-22 | 엘지전자 주식회사 | Video display appliance with fluorescence film for color cathode ray tube |
| WO2004076587A1 (en) * | 2003-02-28 | 2004-09-10 | Kabushiki Kaisha Toshiba | Green light emitting phosphor for low voltage/high current density and field emissiion type display including the same |
-
1992
- 1992-07-31 JP JP20487292A patent/JPH0652808A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100361813B1 (en) * | 2000-05-17 | 2002-11-22 | 엘지전자 주식회사 | Video display appliance with fluorescence film for color cathode ray tube |
| WO2004076587A1 (en) * | 2003-02-28 | 2004-09-10 | Kabushiki Kaisha Toshiba | Green light emitting phosphor for low voltage/high current density and field emissiion type display including the same |
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