JPH02269792A - Cathode ray tube - Google Patents
Cathode ray tubeInfo
- Publication number
- JPH02269792A JPH02269792A JP9262489A JP9262489A JPH02269792A JP H02269792 A JPH02269792 A JP H02269792A JP 9262489 A JP9262489 A JP 9262489A JP 9262489 A JP9262489 A JP 9262489A JP H02269792 A JPH02269792 A JP H02269792A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- zns
- reflectance
- color
- ppm
- 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.)
- Granted
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000012190 activator Substances 0.000 claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 229910052737 gold Inorganic materials 0.000 claims abstract description 13
- 230000004913 activation Effects 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 58
- 239000010931 gold Substances 0.000 description 48
- 238000010586 diagram Methods 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000003595 spectral effect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 150000002344 gold compounds Chemical class 0.000 description 1
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 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
- 238000002156 mixing Methods 0.000 description 1
- KKIWLGAMEWOSQL-UHFFFAOYSA-N n-nitroso-n-propylpropanamide Chemical compound CCCN(N=O)C(=O)CC KKIWLGAMEWOSQL-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Landscapes
- Luminescent Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
(産業上の利用分野)
この発明は、緑蛍光体からなる蛍光面を有するカラー受
像管などの陰極線管に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a cathode ray tube such as a color picture tube having a phosphor screen made of green phosphor.
(従来の技術)
近年、カラー受像管の緑色成分蛍光体として、ZnS
: Cu,Al,Au蛍光体が用いられている。(Prior art) In recent years, ZnS has been used as a green component phosphor for color picture tubes.
: Cu, Al, Au phosphors are used.
この蛍光体は、特公昭57−42117号公報に述べら
れているように、従来のZnS : Cu、AQ (C
u=120 ppm)にくらべ、 CIE表色系色度座
標のXおよびyの値が
0.300≦ X ≦0.350
0.560≦ y ≦0.610
である黄緑色領域に色度値を有する。この蛍光体が使用
される理由は、カラー受像管の白色輝度を改善するため
である。しかし、この蛍光体を用いたカラー受像管は、
その発光色が黄緑色を呈するため、カラー受像管の高品
位化にともなう発光色の高純度化の要求に対し満足でき
ないものとなってきた。This phosphor is made of conventional ZnS:Cu,AQ(C
u=120 ppm), the chromaticity value is set in the yellow-green region where the X and y values of the CIE color system chromaticity coordinates are 0.300≦X≦0.350 0.560≦y≦0.610. have The reason this phosphor is used is to improve the white brightness of color picture tubes. However, color picture tubes using this phosphor are
Since the emitted light color is yellow-green, it has become impossible to satisfy the demand for highly purified emitted light color as the quality of color picture tubes has become higher.
上記発光色の高純度化の要求に対して本出願人は、特開
昭60−8383号公報にカラー受像管の好ましい緑色
成分蛍光体として、母体1gに対してCu付活量が1×
10″″4〜3x10′″4決のZnS : Cu。In response to the above-mentioned demand for high purification of the emitted color, the applicant of the present invention proposed a preferable green component phosphor for color picture tubes in Japanese Patent Laid-Open No. 60-8383.
10″″4~3x10″4 ZnS: Cu.
AIlを用い、赤色成分蛍光体として、母体1gに対し
てEu付活量が5.I X 10−” 〜6.I X
to−2#のY、O,S : Euを用いて蛍光面を形
成したカラー受像管を示した。これは、白色輝度を実質
的に低下させることなく色再現域を最大にするための蛍
光体組合わせである。Al was used as the red component phosphor, and the Eu activation amount was 5. IX 10-” ~6.IX
Y, O, S of to-2#: A color picture tube in which a phosphor screen was formed using Eu was shown. This is a phosphor combination that maximizes color gamut without substantially reducing white brightness.
ところで1通常、Z n S : Cu p A Q
を蛍光体の場合、 Cu付活剤濃度と色度値との関係
は、第3図に示すように、色度値Xについては実線■の
ように変化し、色度値yについては破IIA■のように
変化し、母体1滲に対してCu付活量が6X10−5〜
3X10−’#の範囲では、はぼ一定である。一方、カ
ラー受像管の蛍光面を白色輝度2色再現域および色純度
の観点から考察すると、緑色成分蛍光体に要求される最
適な色度値は。By the way, 1 Usually, Z n S: Cup A Q
In the case of a phosphor, the relationship between the Cu activator concentration and the chromaticity value is as shown in Figure 3.The chromaticity value It changes as shown in ■, and the Cu activation amount is 6X10-5 to 1 mass of the matrix.
In the range 3X10-'#, it is approximately constant. On the other hand, when considering the phosphor screen of a color picture tube from the viewpoint of white luminance, two-color reproduction range, and color purity, what is the optimal chromaticity value required for the green component phosphor?
0.294≦ X ≦0.298
0.615≦ y ≦0.625
である。 したがって、ZnS : Cu,Al蛍光体
の場合、最適なCu付活剤濃度は、160〜220pp
@どなる。0.294≦X≦0.298 0.615≦y≦0.625. Therefore, for ZnS:Cu,Al phosphor, the optimal Cu activator concentration is 160-220 pp
@bawl.
しかしながら、このような蛍光体は5従来のZnS :
Cu、AN蛍光体にくらべCu付活剤濃度が高いため
、蛍光体の体色が黄色味を帯び、特に紫外域での反射率
が従来の ZnS : Cu、 AI2蛍光体にくらべ
て低くなり、パネル内面に塗布された蛍光体とPVA
(ポリビニルアルコール)とADC(重クロム酸アンモ
ニウム)を主成分とする蛍光体スラリ層を超高圧水銀ラ
ンプで露光する際、紫外光が吸収され、露光時間の増大
するばかりでなく、その後蛍光体スラリ層を現象して得
られる蛍光体層のきれ(形状)が劣化するという問題が
おこる。However, such phosphors are similar to 5 conventional ZnS:
Because the concentration of Cu activator is higher than that of Cu and AN phosphors, the body color of the phosphor takes on a yellowish tinge, and the reflectance, especially in the ultraviolet region, is lower than that of conventional ZnS:Cu, AI2 phosphors. Phosphor and PVA coated on the inside of the panel
When exposing a phosphor slurry layer mainly composed of (polyvinyl alcohol) and ADC (ammonium dichromate) with an ultra-high pressure mercury lamp, ultraviolet light is absorbed, which not only increases the exposure time but also causes the phosphor slurry to A problem arises in that the edge (shape) of the phosphor layer obtained by deterioration of the layer deteriorates.
第4図は、ZnS : Cu、 AQ、 Au (Cu
=180ppm、 Au=200ppm)、 Zn
S : Cu、 AQ(Cu=180ppm)、Zn
S : Cu、 AQ (Cu=120ppm)各蛍光
体の分光反射率を示したものである。この図において、
曲線■に示す前記特公昭57−42117号公報のZn
S : Cu、 AL Au (Cu=180ppm)
蛍光体は。Figure 4 shows ZnS: Cu, AQ, Au (Cu
=180ppm, Au=200ppm), Zn
S: Cu, AQ (Cu=180ppm), Zn
S: Cu, AQ (Cu=120 ppm) This shows the spectral reflectance of each phosphor. In this diagram,
The Zn of the above-mentioned Japanese Patent Publication No. 57-42117 shown in the curve ■
S: Cu, AL Au (Cu=180ppm)
The phosphor.
曲線(イ)に示す従来の ZnS : Cu、 AQ(
Cu==120ppm)蛍光体にくらべ365 nmで
の反射率が低いため、このZnS : Cu,Al,A
u蛍光体を使用した蛍光体スラリ層は、 ZnS :
Cu、 AJ! (Cu=120ppm)蛍光体からな
る蛍光体スラリ層に対して露光時間が約1.5倍かかる
。一方、曲線0に示す前記特開昭60−8383号公報
のZnS : Cu,Al (Cu−[/lP、) a
km&14− ’JにQ、、’l!1JJH尉Wjlf
r(JWZnS : Cu,Al,Au蛍光体よりは高
いが、まだZnS: Cu、 Aa (Cu=120p
p−)蛍光体より低いため、露光時間が約1.2倍かか
る。Conventional ZnS shown in curve (a): Cu, AQ (
This ZnS: Cu, Al, A
The phosphor slurry layer using u phosphor is ZnS:
Cu, AJ! (Cu=120 ppm) The exposure time is about 1.5 times that of a phosphor slurry layer made of phosphor. On the other hand, ZnS of the above-mentioned Japanese Unexamined Patent Publication No. 1983-8383 shown by curve 0: Cu, Al (Cu-[/lP,) a
km&14-'J to Q,,'l! 1JJH Lieutenant Wjlf
r (JWZnS: higher than Cu, Al, Au phosphor, but still ZnS: Cu, Aa (Cu=120p
Since it is lower than p-) phosphor, the exposure time is about 1.2 times longer.
(発明が解決しようとする課題)
上記のように、従来よりカラー受像管の緑色成分蛍光体
として、ZnS : Cu,Al,Au蛍光体やZ n
S : Cu e A j!蛍光体が検討されている
が、カラー受像管の白色輝度や色再現域を劣化させない
ようにしようとすると、これら蛍光体は、体色が黄緑色
を帯び、紫外光を吸収するため、蛍光体スラリ層を露光
して蛍光体層を形成するときの露光時間が増大し、かつ
その後現像して得られる蛍光体層の形状が劣化するとい
う問題がある。(Problems to be Solved by the Invention) As mentioned above, ZnS: Cu, Al, Au phosphors and ZnS have been used as green component phosphors for color picture tubes.
S: Cu e A j! Phosphors are being considered, but in order to prevent the white brightness and color reproduction range of color picture tubes from deteriorating, these phosphors have a yellow-green body color and absorb ultraviolet light, so it is difficult to use phosphors. There is a problem that the exposure time when forming the phosphor layer by exposing the slurry layer to light increases, and the shape of the phosphor layer obtained by subsequent development deteriorates.
この発明は、上記問題点を解決するためになされたもの
であり、カラー受像管などの陰極線管の色再現域を劣化
させることなく、蛍光体の付着力を改善し、かつ蛍光体
層を形成するための露光時間を短縮することを目的とす
る。This invention was made to solve the above problems, and it improves the adhesion of phosphor and forms a phosphor layer without deteriorating the color reproduction range of cathode ray tubes such as color picture tubes. The purpose is to shorten the exposure time for
CmM&解決丁7まための工N〕
緑色成分蛍光体h゛らなる蛍光面を有する陰極線管にお
いて、 その緑色成分蛍光体を、ZnSを母体とし、
Cu、ANおよびAuを付活剤として上記母体1gに対
してCuの付活量が8X10−5〜1.5×10−’
i、Auの付活量が0.01 X 10−5〜6X10
−’iであり、かつ365nmの反射率が酸化マグネシ
ウム拡散板の反射率を100%とするとき、15%以上
であるZnS : Cu,Al,Au蛍光体とした。In a cathode ray tube having a phosphor screen made of a green component phosphor, the green component phosphor is made of ZnS as a matrix,
Using Cu, AN and Au as activators, the activation amount of Cu is 8 x 10-5 to 1.5 x 10-' per 1 g of the above matrix.
i, Au activation amount is 0.01X10-5 to 6X10
-'i, and the reflectance at 365 nm was 15% or more when the reflectance of the magnesium oxide diffuser plate was 100%.
(作 用)
上記のように ZnSを母体とする蛍光体について、従
来と同程度の付活量のCuのほかに、若干量のAuによ
り付活すると、365nmでの反射率を低下させること
なく、蛍光体の発光色を最適に維持させることができる
。(Function) As mentioned above, when a ZnS-based phosphor is activated with a small amount of Au in addition to the same activation amount of Cu as before, it can be activated without reducing the reflectance at 365 nm. , the luminescent color of the phosphor can be maintained optimally.
(実施例)
以下、図面を参照してこの発明を実施例に基づいて説明
する。(Example) Hereinafter, the present invention will be described based on an example with reference to the drawings.
第1図にその一実施例であるカラー受像管の構成を示す
、このカラー受像管は、パネル(10)およびこのパネ
ル(10)に一体に接合されたファンネル(11)から
なる外囲器を有し、そのパネル(10)内側に、多数の
電子ビーム通過孔の形成されたシャドウマスク(12)
が装着され、このシャドウマスク(12)に対向して、
パネル(10)内面に蛍光面(13)が設けられている
。この蛍光面(13)は、第2図および第3図に示すよ
うに、青、緑、赤に発光するストライプ状またはドツト
状などの3色蛍光体層(14B)、 (14G)、 (
14R)と、この3色蛍光体層(14B) 。FIG. 1 shows the configuration of a color picture tube as an example. This color picture tube has an envelope consisting of a panel (10) and a funnel (11) integrally joined to the panel (10). and a shadow mask (12) in which a large number of electron beam passing holes are formed inside the panel (10).
is attached, and facing this shadow mask (12),
A fluorescent screen (13) is provided on the inner surface of the panel (10). As shown in FIGS. 2 and 3, this phosphor screen (13) has three-color phosphor layers (14B), (14G), (
14R) and this three-color phosphor layer (14B).
(14G)、 (14R)の間隙部を埋める黒色物質の
光吸収層(15)とからなる。(14G) and a light absorption layer (15) made of a black material that fills the gap between (14R).
なお、第1図において、(17)はマスク支持手段、(
18)は3電子ビームを放出する電子銃、(19)は陽
極端子、(20)は内部導電膜である。In addition, in FIG. 1, (17) is a mask support means, (
18) is an electron gun that emits three electron beams, (19) is an anode terminal, and (20) is an internal conductive film.
ところで、この例のカラー受像管の蛍光面(13)を構
成する緑色蛍光体層(14G)は、ZnSを母体とし、
Cu、A(1,Auをそれぞれ付活剤として、母体1g
に対して、Cuを8 ×10−’ 〜t、5xto−’
@、Auを0.01 X 10−’ 〜6 X IP’
q含有し、 365nmでの反射率が、酸化マグネシ
ウム拡散板の反射率をioo%とするとき、15%以上
であるZnS : Cu。By the way, the green phosphor layer (14G) constituting the phosphor screen (13) of the color picture tube in this example is made of ZnS,
Using Cu, A(1, and Au as activators), 1 g of the matrix
For that, Cu is 8 × 10-' ~t, 5xto-'
@, Au 0.01 x 10-' ~ 6 x IP'
ZnS.
AQ、Au蛍光体により構成されている。It is composed of AQ and Au phosphors.
この蛍光体は、つぎのように製造することができる。This phosphor can be manufactured as follows.
ZnS19に対して銅化合物たとえば硫化銅(Cu濃度
が8 X 10−’ 〜1.5 X 10”” li
) 、アルミニウム化合物たとえば硝酸アルミニウム(
AQ p度が3xl(1″′〜1xto−3t)および
金化合物たとえば塩化金(A u濃度が0.01 X
10−’ 〜6 X 10−’ g、)を加えてスラリ
状に混合し、乾燥したのち、この混合物に融剤としてア
ルカリ金属およびアルカリ土類金属のハロゲン化物の少
なくとも一種を混合する。そして、この混合物を石英チ
ューブに充填して900〜1030℃の温度で0.5〜
3時間硫化水素などの還元雰囲気中で焼成する。その後
、脱イオン水で数回洗浄、粉砕処理し、さらに、濾過、
乾燥、ふるいなどをおこなうことにより得られる。For ZnS19, a copper compound such as copper sulfide (Cu concentration is 8 x 10-' to 1.5 x 10''li
), aluminum compounds such as aluminum nitrate (
AQ p degree is 3xl (1''~1xto-3t) and gold compounds such as gold chloride (A u concentration is 0.01x
10-' to 6 x 10-' g,) are added and mixed to form a slurry, and after drying, at least one of alkali metal and alkaline earth metal halides is mixed into this mixture as a flux. Then, fill a quartz tube with this mixture and heat it at a temperature of 900 to 1030°C to
Calcinate in a reducing atmosphere such as hydrogen sulfide for 3 hours. After that, it was washed several times with deionized water, pulverized, and then filtered.
Obtained by drying, sieving, etc.
なお、この蛍光体の焼成温度は上記のように900〜1
030℃であるが、好ましくは950〜1000℃で焼
成するとよい。 これは、950℃より低い温度で焼成
すると、カラー受像管製造後の蛍光体の色度値のy値が
低下し、 また1000℃を越えると、X値が低下する
からである。Note that the firing temperature of this phosphor is 900 to 1
030°C, preferably 950 to 1000°C. This is because if firing at a temperature lower than 950°C, the y value of the chromaticity value of the phosphor after manufacturing the color picture tube will decrease, and if it exceeds 1000°C, the X value will decrease.
つぎに、上記ZnS : Cu,Al,Au蛍光体の特
性について述べる。Next, the characteristics of the above ZnS:Cu,Al,Au phosphor will be described.
Cu付活剤濃度を120pp+aとして、Au付活剤濃
度を20.40.60.80ppmとしたZnS :
Cu、 Al1゜Au蛍光体の粉体特性(輝度9色度値
)をチエツクした結果をAu付活剤を含まない ZnS
: Cu。ZnS with Cu activator concentration of 120 pp+a and Au activator concentration of 20.40.60.80 ppm:
The results of checking the powder characteristics (luminance, 9 chromaticity values) of Cu, Al1゜Au phosphor were compared to ZnS containing no Au activator.
: Cu.
A2蛍光体のそれと比較して表1に、 また分光反射率
を第4図に示す。この第4図の分光反射率は、第5図に
示すように、セル(22)に測定蛍光体(23)を詰め
、この測定蛍光体(23)にスリット(24)を介して
ハロゲン電球(色温度3124°K)からの光を当て、
その反射光をスリット(25)を介して受光器により測
定し、同様の方法により測定した酸化マグネシウム拡散
板の反射率を100%としてその相対値で示したもので
あり1曲線(27)はZnS :Cu、 AN、 Au
(Cu=120ppm、 Au=20ppna)蛍光
体1曲線(28)はZnS : Cu、 AQ、 Au
(Cu=120ppm 、 A u = 40ppm
)蛍光体1曲線(29)はZnS :Cu、 Al1.
Au+Cu (Cu=120ppm、 Au=60p
pm)蛍光体、曲線(30)はZnS : Cu、 A
Q、 Au (Cu=120ppm、 Au=80pp
m)蛍光体の反射率であり。A comparison with that of A2 phosphor is shown in Table 1, and the spectral reflectance is shown in Figure 4. The spectral reflectance in Fig. 4 is calculated by filling a cell (22) with a phosphor (23) to be measured, and inserting a halogen bulb (23) into the phosphor (23) through a slit (24), as shown in Fig. 5. Illuminate the light with a color temperature of 3124°K.
The reflected light was measured by a light receiver through a slit (25), and the reflectance of the magnesium oxide diffuser plate measured in the same manner was taken as 100%, and the relative value is shown.Curve 1 (27) is for ZnS. :Cu, AN, Au
(Cu=120ppm, Au=20ppna) Phosphor 1 curve (28) is ZnS: Cu, AQ, Au
(Cu = 120ppm, A u = 40ppm
) Phosphor 1 curve (29) is ZnS:Cu, Al1.
Au+Cu (Cu=120ppm, Au=60p
pm) phosphor, curve (30) is ZnS: Cu, A
Q, Au (Cu=120ppm, Au=80ppm
m) is the reflectance of the phosphor.
比較例であるZnS : Cut AQ、 Au (C
u=180ppm)の反射率曲線はZnS : Cu、
A(1,Au (Cu=120ppm、 Au=80p
pm)蛍光体のそれとほぼ一致している。Comparative example ZnS: Cut AQ, Au (C
The reflectance curve of ZnS:Cu,
A(1, Au (Cu=120ppm, Au=80p
pm) almost coincides with that of the phosphor.
表 1
この第4図かられかるように、Au付活剤濃度が高くな
るにしたがって365nmでの反射率は低くなり、特に
Au付活剤濃度が60ppmより多くなると5前述・し
た従来の蛍光体と比較して露光時間の短縮につながらな
くなる。つまり、この発明の目的に適合するAu付活剤
濃度は60ppm以下である。Table 1 As can be seen from Figure 4, as the Au activator concentration increases, the reflectance at 365 nm decreases, and especially when the Au activator concentration exceeds 60 ppm, the conventional phosphor described in 5. This does not lead to a reduction in exposure time compared to . In other words, the Au activator concentration suitable for the purpose of this invention is 60 ppm or less.
一方、表1かられかるようにAu付活剤濃度が60ρρ
mより多くなると、色度値のy値も低くなり、発光色の
飽和値が劣化する。On the other hand, as seen from Table 1, the Au activator concentration was 60ρρ
If the number exceeds m, the y value of the chromaticity value also becomes low, and the saturation value of the emitted color deteriorates.
上記結果に基づいてAu付活剤濃度を40pp+mとし
、Cu付活剤1度を変化させた場合の粉体特性(色度値
)をAu付活剤を含まない比較例のそれと比較して表2
に示す。Based on the above results, the powder characteristics (chromaticity value) when the Au activator concentration was set to 40 pp+m and the Cu activator was changed by 1 degree are compared with those of a comparative example that does not contain Au activator. 2
Shown below.
表 2
この表2かられかるように、 Cu付活剤濃度が70p
pmより少なくなると、Auと共付活したときの色度値
のy値が低くなる。したがって、この発明の目的に適合
するCu付活剤濃度は80 ppm以上である。Table 2 As can be seen from Table 2, when the Cu activator concentration is 70p
When it is less than pm, the y value of the chromaticity value when co-activated with Au becomes low. Therefore, the Cu activator concentration suitable for the purpose of this invention is 80 ppm or more.
つぎに、 Cu付活剤濃度が120ppm、 Au付活
剤濃度が20ppmのZnS : Cu,Al,Au蛍
光体および比較例としてCu付活剤濃度が180ppm
のZnS :Cu、AQ蛍光体について、表3に365
1での反射率と、これら蛍光体を表4に示す組成の蛍光
体スラリに調合してこれを21インチカラー受像管用パ
ネルに塗布して所定の蛍光体層を形成する場合に必要な
露光時間とを示す。また、表5に上記蛍光体のほか、同
一青成分蛍光体および赤成分蛍光体を使用して3色蛍光
体層からなる蛍光面を形成した各カラー受像管の色度値
、単色輝度(緑)、白色輝度を示す。Next, ZnS with a Cu activator concentration of 120 ppm and an Au activator concentration of 20 ppm: Cu, Al, Au phosphor and a comparative example with a Cu activator concentration of 180 ppm.
For ZnS:Cu,AQ phosphor, Table 3 shows 365
1 and the exposure time required to form a predetermined phosphor layer by mixing these phosphors into a phosphor slurry with the composition shown in Table 4 and applying this to a 21-inch color picture tube panel. and In addition to the above phosphors, Table 5 also shows the chromaticity values and monochromatic luminance (green ), indicating white luminance.
表 表 表 表3かられかるようにCu付活剤濃度が120ppm。table table table As can be seen from Table 3, the Cu activator concentration was 120 ppm.
Au付活剤濃度が20ppmのZnS : Cu+ A
Q、Au蛍光体は、Cu付活剤濃度が180PpHのZ
nS : Cu。ZnS with Au activator concentration of 20 ppm: Cu+A
Q, Au phosphor is Z with a Cu activator concentration of 180PpH
nS: Cu.
AQ比較例蛍光体にくらべて、365nmでの反射率が
高いため、実際に蛍光体層を形成するときの露光時間が
短縮できる。しかも、表5に示されているように単色輝
度で5%、白色輝度で4%向上している。Since the reflectance at 365 nm is higher than that of the AQ comparative example phosphor, the exposure time when actually forming the phosphor layer can be shortened. Furthermore, as shown in Table 5, the monochromatic luminance was improved by 5% and the white luminance was improved by 4%.
この輝度向上の理由は明確ではないが、ZnS :Cu
、AQ蛍光体に少量のAuを共付活剤として加えると、
母体成分であるZnにくらべて原子半径の大きいAuが
結晶格子を広げ、Cuが有効に結晶内部にドーピングさ
れるためであると考えられる。The reason for this brightness improvement is not clear, but ZnS:Cu
, when a small amount of Au is added as a co-activator to the AQ phosphor,
This is thought to be because Au, which has a larger atomic radius than Zn, which is the base component, expands the crystal lattice, and Cu is effectively doped inside the crystal.
つぎに、 Cu付活剤濃度を150ppmとしてAu付
活剤濃度を1Oppn+、 5 PP11t l PP
1j* 0.lppmとしたZnS : Cup A(
Ay Au蛍光体、および比較例としてCu付活剤濃度
が150ppmのZnS : Cu、AQを使用して、
上記と同様に製造した21インチカラー受像管の色度値
、単色輝度および白色輝度を表6に、また電流飽和特性
を第6図に示す。この第6図において、曲線(32)は
Au付活剤濃度が10ppi+、曲線(33)は5pp
m、曲線(34)は1 ppm、曲線(35)は0、l
ppm、 曲線(36)は比較例(OPISII)
(7)電流飽和特性である。Next, the Cu activator concentration is 150 ppm, the Au activator concentration is 1Oppn+, 5 PP11t l PP
1j* 0. ZnS with lppm: Cup A (
Using AyAu phosphor and ZnS:Cu,AQ with a Cu activator concentration of 150 ppm as a comparative example,
Table 6 shows the chromaticity value, monochromatic brightness and white brightness of the 21-inch color picture tube manufactured in the same manner as above, and the current saturation characteristics are shown in FIG. In this FIG. 6, the curve (32) has an Au activator concentration of 10 ppi+, and the curve (33) has an Au activator concentration of 5 ppi+.
m, curve (34) is 1 ppm, curve (35) is 0, l
ppm, curve (36) is a comparative example (OPISII)
(7) Current saturation characteristics.
表
特に第6図の曲線(33)〜(35)に示されているよ
うにAu付活剤濃度を5 ppm以下とすると、電流飽
和特性が改善される。As shown in the table, especially curves (33) to (35) in FIG. 6, when the Au activator concentration is 5 ppm or less, the current saturation characteristics are improved.
以上の結果から、ZnS : Cu、 Ajl、 Au
蛍光体において、輝度向上が得られるのはAu付活剤濃
度が0.lppm以上の場合であり、また、Cu付活剤
濃度が150ppmより多くなると、365nmでの反
射率が所望値より低くなる。したがって、この発明の目
的に適合する蛍光体は、母体ZnS1#に対してCuの
付活量が8 X IP’ 〜1.5 X 10−’ f
# 、 Auの付活量が0.01 X 10−’ 〜6
X 10−’ liのZnS : Cu。From the above results, ZnS: Cu, Ajl, Au
In the phosphor, brightness can be improved when the Au activator concentration is 0. If the Cu activator concentration exceeds 150 ppm, the reflectance at 365 nm becomes lower than the desired value. Therefore, a phosphor suitable for the purpose of the present invention has a Cu activation amount of 8 X IP' to 1.5 X 10-' f with respect to the base ZnS1#.
#, Au activation amount is 0.01 x 10-' ~ 6
ZnS of X 10-' li: Cu.
Aff、Au蛍光体となる。Aff, becomes Au phosphor.
陰極線管の緑色成分蛍光体を、 ZnSを母体とし、C
u、AjlおよびAuを付活剤として、母体1ノに対し
てCuの付活量を8 XIP” 〜1.5X10−’
!?−1Auの付活量を0.01 X to−’ 〜6
X 10”” iとし、かつ365n+++の反射量
が酸化マグネシウム拡散板の反射率を100%とすると
き、15%以上であるZnS :Cu、A4.Au蛍光
体とすると、紫外線での反射率の低下を軽減して蛍光面
形成時の露光時間を短縮できる。しかも、蛍光体の発光
色を最適に維持するばかりでなく、カラー受像管に適用
して白色輝度を改善することができる。The green component phosphor of the cathode ray tube is made of ZnS and C
Using u, Ajl and Au as activators, the amount of activation of Cu is 8XIP'' to 1.5X10-'
! ? -1Au activation amount is 0.01X to-' ~6
ZnS:Cu, A4. If Au phosphor is used, it is possible to reduce the decrease in reflectance due to ultraviolet rays and shorten the exposure time when forming a phosphor screen. Moreover, not only can the luminescent color of the phosphor be maintained optimally, but also white brightness can be improved by applying it to a color picture tube.
第1図ないし第6図はこの発明の詳細な説明図で、第1
図はその一実施例であるカラー受像管の構成を示す図、
第2図(a)および(b)はそれぞれそのストライプ状
蛍光体層からなる蛍光面の平面図および断面図、第3図
(a)および(b)はそれぞれドツト状蛍光体層からな
る蛍光面の平面図および断面図、第4図はAu付活剤濃
度の異なるZnS :Cug AJ Au蛍光体の分光
反射率を従来のZnSCu、AQ蛍光体のそれと比較し
て示す図、第5図は蛍光体の分光反射率の測定方法説明
図、第6図はAu付活剤濃度の異なる ZnS : C
u,Al、Au蛍光体の電流飽和特性を示す図、第7図
は従来のZnS : Cu、 Aj!蛍光体のCu付活
剤濃度と色度値?
どの関係を示す図、第X図は従来のZnS:Cu。
A4.Au蛍光体およびZnS : Cu、 Aj2蛍
光体の分光反射率を示す図である。
IO・・・パネル 13・・・蛍光面14B
、 14G、 14R・・・3色蛍光体層15・・・光
吸収層
代理人 弁理士 大 胡 典 夫
第
工
図
隔
図
第
図
第
図
平均を皺屋
(μA /cJ )Figures 1 to 6 are detailed explanatory diagrams of this invention.
The figure shows the configuration of a color picture tube, which is an example of this.
FIGS. 2(a) and (b) are a plan view and a cross-sectional view of a phosphor screen made of striped phosphor layers, respectively, and FIGS. 3(a) and (b) are phosphor screens made of dot-like phosphor layers, respectively. Figure 4 is a diagram showing the spectral reflectance of ZnS:Cug AJ Au phosphors with different Au activator concentrations compared with that of conventional ZnSCu and AQ phosphors, and Figure 5 is a diagram showing the fluorescence An explanatory diagram of the method for measuring the spectral reflectance of the body.
Figure 7 shows the current saturation characteristics of u, Al, and Au phosphors. Cu activator concentration and chromaticity value of phosphor? A diagram showing which relationship, Figure X, is for conventional ZnS:Cu. A4. FIG. 2 is a diagram showing the spectral reflectance of an Au phosphor and a ZnS:Cu,Aj2 phosphor. IO... Panel 13... Fluorescent screen 14B
, 14G, 14R...Three-color phosphor layer 15...Light absorption layer Representative Patent attorney Norio Ogo
Claims (1)
て上記母体1gに対して上記Cuの付活量が8×10^
−^5〜1.5×10^−^4g、上記Auの付活量が
0.01×10^−^5〜6×10^−^4gであり、
かつ365nmの反射率が酸化マグネシウム拡散板の反
射率を100%とするとき15%以上であるZnS:C
u,Al,Au蛍光体からなる蛍光面を有することを特
徴とする陰極線管。Using ZnS as a matrix and Cu, Al, and Au as activators, the activation amount of the Cu is 8 x 10^ per 1 g of the matrix.
-^5~1.5x10^-^4g, the activation amount of the above Au is 0.01x10^-^5~6x10^-^4g,
and ZnS:C whose reflectance at 365 nm is 15% or more when the reflectance of the magnesium oxide diffuser plate is 100%.
A cathode ray tube characterized by having a phosphor screen made of u, Al, and Au phosphors.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1092624A JP2795893B2 (en) | 1989-04-12 | 1989-04-12 | Cathode ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1092624A JP2795893B2 (en) | 1989-04-12 | 1989-04-12 | Cathode ray tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02269792A true JPH02269792A (en) | 1990-11-05 |
JP2795893B2 JP2795893B2 (en) | 1998-09-10 |
Family
ID=14059596
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JP1092624A Expired - Fee Related JP2795893B2 (en) | 1989-04-12 | 1989-04-12 | Cathode ray tube |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5394281A (en) * | 1977-01-31 | 1978-08-18 | Toshiba Corp | Green luminous zinc sulfide fluorescent substance |
JPS5497591A (en) * | 1978-01-03 | 1979-08-01 | Gte Sylvania Inc | Zinc sulfide activated by gold*copper and aluminum |
JPS5580486A (en) * | 1978-12-06 | 1980-06-17 | Rca Corp | Preparing cathode ray excited phosphor |
JPS5641649A (en) * | 1979-09-14 | 1981-04-18 | Toshiba Corp | Cathode ray tube for color television set |
JPS5642941A (en) * | 1979-09-18 | 1981-04-21 | Toshiba Corp | Cathode-ray tube for colour tv set |
JPS5659890A (en) * | 1980-10-20 | 1981-05-23 | Kasei Optonix Co Ltd | Green light-emitting phosphor |
-
1989
- 1989-04-12 JP JP1092624A patent/JP2795893B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5394281A (en) * | 1977-01-31 | 1978-08-18 | Toshiba Corp | Green luminous zinc sulfide fluorescent substance |
JPS5497591A (en) * | 1978-01-03 | 1979-08-01 | Gte Sylvania Inc | Zinc sulfide activated by gold*copper and aluminum |
JPS5580486A (en) * | 1978-12-06 | 1980-06-17 | Rca Corp | Preparing cathode ray excited phosphor |
JPS5641649A (en) * | 1979-09-14 | 1981-04-18 | Toshiba Corp | Cathode ray tube for color television set |
JPS5642941A (en) * | 1979-09-18 | 1981-04-21 | Toshiba Corp | Cathode-ray tube for colour tv set |
JPS5659890A (en) * | 1980-10-20 | 1981-05-23 | Kasei Optonix Co Ltd | Green light-emitting phosphor |
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