JP2001172626A - Display and light emitting device - Google Patents

Display and light emitting device

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Publication number
JP2001172626A
JP2001172626A JP36221999A JP36221999A JP2001172626A JP 2001172626 A JP2001172626 A JP 2001172626A JP 36221999 A JP36221999 A JP 36221999A JP 36221999 A JP36221999 A JP 36221999A JP 2001172626 A JP2001172626 A JP 2001172626A
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Prior art keywords
phosphor
green
tb
display
phosphor layer
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Japanese (ja)
Inventor
Choichiro Okazaki
Masatoshi Shiiki
Teruki Suzuki
暢一郎 岡▲崎▼
正敏 椎木
輝喜 鈴木
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Hitachi Ltd
株式会社日立製作所
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Priority to JP36221999A priority Critical patent/JP2001172626A/en
Publication of JP2001172626A publication Critical patent/JP2001172626A/en
Application status is Pending legal-status Critical

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies
    • Y02B20/16Gas discharge lamps, e.g. fluorescent lamps, high intensity discharge lamps [HID] or molecular radiators
    • Y02B20/18Low pressure and fluorescent lamps
    • Y02B20/181Fluorescent powders

Abstract

PROBLEM TO BE SOLVED: To obtain a Tb-activated rare earth alumino-borate fluorescent substance having a high efficiency under excitation with ultraviolet rays within the vacuum ultraviolet region (wavelength: ≤200 nm) and low-energy electron beams.
SOLUTION: This fluorescent substance comprises the general compositional formula LnAl3B4O12:Tb (wherein Ln is at least one kind of element selected from La, Y, Gd, Lu and Sc), more preferably the compositional formula (Y1-x-yGdxTby)Al3B4O12 (wherein 0≤x≤0.85; and 0.15≤y≤0.65).
COPYRIGHT: (C)2001,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は真空紫外領域(波長:200nm以下)にある希ガス共鳴紫外線または低速電子線により励起されて緑色に発光する蛍光体を蛍光膜として備えたプラズマ表示装置および希ガス放電発光装置、そして電界放射型ディスプレイ(FED)装置に関する。 The present invention relates to a vacuum ultraviolet region (wavelength: 200 nm or less) plasma display device and comprising a phosphor as a phosphor layer is excited by the rare gas resonance ultraviolet or low voltage electron beam emits green light in dilute gas discharge light emitting device, and a field emission display (FED) device.

【0002】 [0002]

【従来の技術】表示・発光装置の薄型化傾向に伴い、プラズマ表示装置並びに液晶表示装置そして電界放射型ディスプレイ(FED)装置の高性能化が進行している。 With the thinner tendency BACKGROUND ART display and light-emitting device, a plasma display device and high-performance liquid crystal display device and a field emission display (FED) device is in progress.

【0003】プラズマ表示装置は、希ガスを含む微小放電空間での負グロー領域で発生する紫外線(希ガスとしてキセノンを用いた場合、その共鳴線は147nmにある)を励起源として当該放電空間内に配置した蛍光体を発光させることによりカラー表示をする方式である。 [0003] The plasma display device, the discharge space of the ultraviolet rays generated by the negative glow region in a minute discharge space containing a rare gas (when using a xenon as the rare gas, the resonance line is in the 147 nm) as the excitation source it is a method of color display by emitting phosphors arranged.

【0004】液晶表示装置においては、現在バックライト用として主に使用されている直管型白色蛍光ランプの管径を細くするだけでは対応しきれず、また環境上の水銀レス化の要請もあり、これらの諸問題を解決する対策として平面型希ガス放電蛍光ランプが開発されており、 [0004] In the liquid crystal display device, only slimming tube diameter straight tube type white fluorescent lamps are mainly used now as a backlight not cope and also demand for mercury-less environmental, planar rare gas discharge fluorescent lamp as a countermeasure to solve these problems have been developed,
希ガス共鳴線励起用蛍光体が使用される。 Rare gas resonance line exciting the phosphor is used. 一方、電界放射型ディスプレイ(FED)については低速電子線励起用蛍光体が使用されている。 On the other hand, low voltage electron beam excitation phosphor is used for a field emission display (FED).

【0005】 [0005]

【発明が解決しようとする課題】プラズマ表示装置、希ガス放電発光装置(蛍光ランプ等)および電界放射型ディスプレイ(FED)装置の性能は、蛍光体の性能に依存している部分が大きく、現状ではとりわけ緑色蛍光体(Zn 2 SiO 4 :Mnを代表とする)の効率向上が望まれている。 [0005] The plasma display device, a rare gas discharge light emitting device (a fluorescent lamp) and the performance of the field emission display (FED) devices, large portions that depend on the performance of the phosphor, current in especially green phosphor: efficiency of (Zn 2 SiO 4 Mn and as a representative) are desired.

【0006】 [0006]

【課題を解決するための手段】Tb付活希土類元素アルミノ・硼酸塩は、高電圧電子線励起下において発光効率の高いことが、フィリップス・リサーチ・レポート(Ph Tb-activated rare earth element alumino borate Means for Solving the Problems], it high luminous efficiency in the high voltage electron beam excitation under the Philips Research Reports (Ph
ilips Res. Rep.,vol.22,p.481`67)において報告されていた。 ilips Res. Rep., vol.22, p.481`67) have been reported in. 本発明者等は、希土類アルミノ・硼酸塩蛍光体の母体を構成する希土類元素の種類、最適Tb濃度そして合成条件を検討した結果、真空紫外領域紫外線並びに低速電子線励起下において発光効率の高い緑色蛍光体を得、本発明に至った。 The inventors have rare earth elements composing the matrix of the rare-earth alumino-borate phosphor, the optimum Tb concentration and synthesis conditions result of studying, high emission efficiency in the vacuum ultraviolet region ultraviolet and low voltage electron beam excitation under green obtain a phosphor, leading to the present invention.

【0007】本発明の蛍光体は、一般組成式が、 LnAl 3412 :Tb (ただし、上式中LnはLa,Y,Gd,LuそしてS SUMMARY phosphor of the present invention, the general composition formula, LnAl 3 B 4 O 12: Tb ( where in the formula Ln is La, Y, Gd, Lu and S
cの中から選ばれた少なくとも一種類の元素)で表わすことができる緑色発光蛍光体であり、好ましくは次の組成からなる蛍光体である。 c is a green-emitting phosphor which may be represented by at least one element) selected from among a phosphor preferably having the following composition.

【0008】(Y 1-xy Gd x Tb y )Al 3412 (ただし、0≦x≦0.85、0.15≦y≦0.6 [0008] (Y 1-xy Gd x Tb y) Al 3 B 4 O 12 ( provided that, 0 ≦ x ≦ 0.85,0.15 ≦ y ≦ 0.6
5) そして、本発明のプラズマ表示装置,希ガス放電発光装置および電界放射型ディスプレイ(FED)装置は共に上記蛍光体からなる蛍光膜を備えた表示、発光装置である。 5) The plasma display device of the present invention, a rare gas discharge light emitting device and a field emission display (FED) device both display with a phosphor layer made of the fluorescent material, a light emitting device.

【0009】 [0009]

【発明の実施の形態】本発明者等は高効率Tb付活アルミノ・硼酸塩蛍光体を開発し、これを緑色成分として用いることにより、高効率のプラズマ表示装置、希ガス放電発光装置および電界放射型ディスプレイ(FED)装置を得ることができた。 The present inventors have DETAILED DESCRIPTION OF THE INVENTION developed highly efficient Tb-activated alumino borate phosphor, by using this as a green component, a high efficiency of the plasma display device, a rare gas discharge light emitting device and a field It could be obtained emission displays (FED) device.

【0010】表1はLn 1-y Tb y Al 3412において、代表的な希土類元素としてYおよびGdを取り上げ、希土類元素(Ln)の種類およびTb含有量(y) [0010] Table 1 in Ln 1-y Tb y Al 3 B 4 O 12, picks up the Y and Gd as a typical rare earth elements, the type and Tb content of the rare earth element (Ln) (y)
を変えた場合の147nmキセノン共鳴線励起下での相対発光強度を示した表である。 Is a table showing the relative emission intensities under 147nm xenon resonance line excitation in the case of changing the.

【0011】この表から明らかなように、希土類元素がY,Gdの場合では、ともに一般に緑色蛍光体として用いられているZn 2 SiO 4 :Mnよりも発光強度の高い蛍光体を得ることができた。 As is apparent from this table, when the rare earth element is Y, the Gd are both generally used as a green phosphor include Zn 2 SiO 4: Mn can be obtained even with high emission intensity phosphor from It was.

【0012】図1はY 1-y Tb y Al 3412の147nm [0012] Figure 1 is a Y 1-y Tb y Al 3 B 4 O 12 147nm
キセノン共鳴線励起下での相対発光強度のTb濃度依存性を示した。 It showed Tb concentration dependence of the relative light emission intensity under the xenon resonance line excitation. この図から明らかなように、Tb濃度y= As apparent from FIG, Tb concentration y =
0.15〜0.65の範囲でZn 2 SiO 4 :Mnよりも発光強度の高い蛍光体を得ることができた。 In the range of 0.15 to 0.65 Zn 2 SiO 4: I was also able to obtain a high luminous intensity phosphor than Mn.

【0013】本発明の代表的蛍光体は次のようにして合成される。 [0013] Representative phosphors of the present invention are synthesized as follows. まず、蛍光体原料としては、 酸化物等の希土類化合物 酸化テルビウム等のテルビウム化合物 酸化アルミニウム、水酸化アルミニウム等のアルミニウム化合物 酸化硼素、水酸化硼素等の硼素化合物 を用い、これらの各原料を組成式に従って秤量、採取し、湿式または乾式で十分よく混合する。 First, as the phosphor material, terbium compounds aluminum oxide, etc. rare earth compound terbium oxide such as an oxide, aluminum compound boron oxide, such as aluminum hydroxide, with a boron compound such as hydroxide boron composition formula each of these raw materials according weighed, collected, and mixed well enough in the wet or dry. なお、希土類原料は共沈原料を用いてもよい。 Note that the rare earth raw materials may be used coprecipitated material.

【0014】この混合物を白金ルツボ、熔融アルミナルツボ等の耐熱容器に充填し、中性雰囲気ないし空気等の酸化性雰囲気中で徐加熱(加熱速度:200℃/h以下、好ましくは約20℃/h)し、1000〜1200 [0014] filling the mixture a platinum crucible, the heat-resistant container such as a molten alumina crucible, gradually in an oxidizing atmosphere such as a neutral atmosphere or air heating (heating rate: 200 ° C. / h or less, preferably about 20 ° C. / h), and 1000 to 1200
℃の温度で焼成する。 Fired at ℃ of temperature. この焼成物を粉砕後、1:1HC After pulverizing the calcined product, 1: 1Hc
l水溶液による洗浄を経て水洗、乾燥を行ない、同温度での再焼成を経て本発明の緑色発光蛍光体を得る。 Washing through washing with l aqueous solution, subjected to drying, to obtain a green-emitting phosphor of the present invention through the re-sintered at the same temperature.

【0015】(実施例1)表1に蛍光体の組成および相対発光強度を示した。 [0015] showed the composition and relative emission intensity of phosphor (Example 1) Table 1. このうち試料2の蛍光体は次のように合成した。 Phosphor these sample 2 was synthesized as follows. 即ち、原料として Y 23 …………7.90g Tb 47 ………5.61g Al 23 ……15.29g B 23 ………20.89g を秤量し、十分均一に混合した後、アルミナルツボに充填し、空気中、昇温速度30℃/hで1100℃まで徐加熱し、同温度で2時間焼成した。 That is, as a raw material was weighed Y 2 O 3 ............ 7.90g Tb 4 O 7 ......... 5.61g Al 2 O 3 ...... 15.29g B 2 O 3 ......... 20.89g, sufficiently uniform after mixing, the then filled in an alumina crucible in air and slowly heated to 1100 ° C. at a heating rate 30 ° C. / h, and calcined for 2 hours at the same temperature. 得られた焼成物を粉砕後、1:1HCl水溶液洗浄、水洗、乾燥を行って蛍光体を得た。 After grinding the resulting fired product, 1: 1 HCl solution washed, washed with water to obtain a phosphor and dried.

【0016】この蛍光体のキセノン共鳴線(147nm) [0016] The xenon resonance line of the phosphor (147nm)
励起下での発光強度は、Zn 2 SiO 4 :Mn(比較試料)のそれに対し110%と高効率を示した。 Luminous intensity under excitation, Zn 2 SiO 4: Mn showed 110% and high efficiency with respect to that of (comparative sample).

【0017】同様にして表1の試料1および3の蛍光体を合成した。 [0017] were synthesized phosphor of Sample 1 and 3 of Table 1 in the same manner. これらの蛍光体のキセノン共鳴線(147 These phosphors xenon resonance line (147
nm)励起下での発光強度はそれぞれ101%,103% nm) emission intensity under excitation 101%, respectively, of 103%
と高い値を示した。 And it showed a high value.

【0018】図1は、以上の結果を蛍光体の発光強度のTb含有量(y)依存性として示したものである。 [0018] Figure 1 shows the above results as Tb content of the emission intensity of the phosphor (y) dependent. この図から明らかなようにTbの有効範囲は0.15≦y≦ Scope of Tb As apparent from this figure 0.15 ≦ y ≦
0.65であることがわかる。 It can be seen that is 0.65.

【0019】 [0019]

【表1】 [Table 1]

【0020】(実施例2)先に述べた原料を用い、同様な合成プロセスに従い表1に併載した蛍光体(試料4) [0020] (Example 2) destination-mentioned raw material used, similar phosphors 併載 in Table 1 according to the synthetic process (Sample 4)
を合成した。 They were synthesized. この蛍光体のキセノン共鳴線(147nm) The phosphor xenon resonance line (147 nm)
励起下での発光強度は108%と高い値を示した。 Luminous intensity under excitation showed 108 percent high value.

【0021】(実施例3)先に述べた原料を用い、同様な合成プロセスに従い表1に併載した蛍光体(試料5、 [0021] (Example 3) destination-mentioned raw material used, similar phosphors 併載 in Table 1 according to the synthetic process (samples 5,
6、7、8および9)を合成した。 6, 7, 8 and 9) were synthesized. この蛍光体のキセノン共鳴線(147nm)励起下での発光強度はそれぞれ1 Each emission intensity at the fluorescent substance of the xenon resonance line (147 nm) under excitation 1
06、106、103、104および103%と高い値を示した。 It exhibited 06,106,103,104 and 103 percent higher value.

【0022】(実施例4)青色蛍光体として2価Eu付活アルミン酸バリウム・マグネシウム蛍光体を、緑色蛍光体として本発明になるY 0.7 Tb 0.3 Al 3412を、 [0022] (Example 4) a divalent Eu-activated barium magnesium aluminate phosphor as a blue phosphor to the present invention as a green phosphor Y 0.7 Tb 0.3 Al 3 B 4 O 12,
そして赤色蛍光体には3価Eu付活酸化イットリウム蛍光体を用いて希ガス(キセノンガス)放電白色蛍光ランプを製作した。 The red phosphor to trivalent Eu-activated yttrium oxide phosphor a rare gas using (xenon gas) was fabricated discharge white fluorescent lamp. このランプは緑色蛍光体のみを2価Mn This lamp is green phosphor only divalent Mn
付活珪酸亜鉛蛍光体に換えて製作した従来品に比較して高発光効率を有するものであった。 Compared to the conventional product was manufactured in place of the activated zinc silicate phosphor had a high luminous efficiency.

【0023】(実施例5)青色蛍光体として2価Eu付活アルミン酸バリウム・マグネシウム蛍光体を、緑色蛍光体として本発明になるY 0.7 Tb 0.3 Al 3412を、 [0023] (Example 5) a divalent Eu-activated barium magnesium aluminate phosphor as a blue phosphor, the present invention as a green phosphor Y 0.7 Tb 0.3 Al 3 B 4 O 12,
そして赤色蛍光体には3価Eu付活硼酸イットリウム・ And the red phosphor trivalent Eu-activated borate yttrium
ガ゛ドリニウム蛍光体を用いて平面型希ガス(キセノンガス)放電白色蛍光ランプを製作した。 Moth Bu Doriniumu phosphor planar rare gas using (xenon gas) was fabricated discharge white fluorescent lamp. このランプは緑色蛍光体のみを2価Mn付活珪酸亜鉛蛍光体に換えて製作した従来品に比較して高発光効率を有するものであった。 The lamp had a higher luminous efficiency as compared to the conventional product was manufactured instead only green phosphor divalent Mn activated zinc silicate phosphor.

【0024】(実施例6)青色蛍光膜を構成する青色蛍光体として2価Eu付活アルミン酸バリウム・マグネシウム蛍光体を、緑色蛍光膜を構成する緑色蛍光体として本発明のY 0.7 Tb 0.3 Al 3412を、そして赤色蛍光膜を構成する赤色蛍光体には3価Eu付活硼酸イットリウム・ガ゛ドリニウム蛍光体を用いてプラズマディスプレイパネルを製作した。 [0024] (Example 6) a divalent Eu-activated barium magnesium aluminate phosphor as a blue phosphor constituting a blue phosphor layer, the present invention as a green phosphors of the green phosphor layer Y 0.7 Tb 0.3 Al 3 B 4 O 12, and the red phosphors of the red phosphor layer were fabricated plasma display panel using a trivalent Eu-activated borate yttrium moth Bu Doriniumu phosphor. このパネルは緑色蛍光体のみを2価Mn付活珪酸亜鉛蛍光体に換えて製作した従来品に比較して高発光効率を有するものであった。 The panel had a high luminous efficiency compared to the conventional product was manufactured instead only green phosphor divalent Mn activated zinc silicate phosphor.

【0025】(実施例7)本実施例では、まず蛍光膜を形成するガラス基板の内面に均一な透明電極を形成した。 [0025] In Example 7 This example, to form a uniform transparent electrode on the inner surface of the glass substrate to first form a phosphor film. 次に、青色蛍光膜を構成する青色蛍光体として2価Eu付活アルミン酸バリウム・マグネシウム蛍光体を、 Next, a divalent Eu-activated barium magnesium aluminate phosphor as a blue phosphor constituting a blue phosphor layer,
緑色蛍光膜を構成する緑色蛍光体として本発明のY 0.7 Y 0.7 of the present invention as a green phosphors of the green phosphor layer
Tb 0.3 Al 3412を、そして赤色蛍光膜を構成する赤色蛍光体として3価Eu付活酸化イットリウム蛍光体を順次形成した。 The Tb 0.3 Al 3 B 4 O 12 , and the trivalent Eu-activated yttrium oxide phosphor as the red phosphors of the red phosphor layer were sequentially formed.

【0026】このガラス基板と微少な電子線源が作り込んであるもう一つのガラス基板を合わせて封着し、真空排気後に10型の電界放射型ディスプレイ(FED)パネルを製作した。 [0026] The glass substrate and the fine electron beam source together another glass substrate is crowded making and sealing, it was manufactured a field emission display (FED) panel 10 inch after evacuation.

【0027】このパネルは従来のFEDパネルより高輝度の特性を示した。 [0027] The panel showed the characteristics of a high luminance than conventional FED panel. このパネルを用いて、表示パネルを構成し、テレビ、ビデオ、自動車などのディスプレイシステムとして使用したところ、よい表示品質が得られることを確認した。 With this panel, constitutes a display panel, was used television, video, as a display system such as an automobile, it was confirmed that good display quality can be obtained.

【0028】 [0028]

【発明の効果】本発明の緑色発光蛍光体およびこれを用いた表示、発光装置は発光効率が高く、性能の高い特性を有するものである。 Effects of the Invention green-emitting phosphor and a display using the same according to the present invention, the light emitting device has high luminous efficiency and has a high performance characteristics.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】組成式Y 1-y Tb y Al 3412の相対発光強度のTb含有量依存性を示した特性図。 [1] the composition formula Y 1-y Tb y Al 3 characteristic diagram showing a B 4 Tb content dependence of the relative light emission intensity of O 12.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl. 7識別記号 FI テーマコート゛(参考) H01J 29/20 H01J 29/20 31/12 31/12 C 61/44 61/44 N (72)発明者 岡▲崎▼ 暢一郎 茨城県日立市大みか町七丁目1番1号 株 式会社日立製作所日立研究所内 Fターム(参考) 4H001 CA04 CA05 CA07 XA05 XA08 XA12 XA13 XA14 XA21 XA30 XA39 XA56 XA57 XA64 XA71 YA25 5C036 EE01 EF01 EF06 EF09 EG36 EH12 5C040 GG08 MA03 5C043 AA02 CC09 CC16 CD08 DD28 EA19 EB04 EC06 EC17 5G435 AA00 BB01 BB06 EE29 HH06 ────────────────────────────────────────────────── ─── front page continued (51) Int.Cl. 7 identifications FI theme coat Bu (reference) H01J 29/20 H01J 29/20 31/12 31/12 C 61/44 61/44 N (72) inventor Oka ▲ Saki ▼ NobuIchiro Hitachi City, Ibaraki Prefecture Omika-cho, seven chome No. 1 Co., Ltd. Hitachi, Ltd. Hitachi Research Laboratory in the F-term (reference) 4H001 CA04 CA05 CA07 XA05 XA08 XA12 XA13 XA14 XA21 XA30 XA39 XA56 XA57 XA64 XA71 YA25 5C036 EE01 EF01 EF06 EF09 EG36 EH12 5C040 GG08 MA03 5C043 AA02 CC09 CC16 CD08 DD28 EA19 EB04 EC06 EC17 5G435 AA00 BB01 BB06 EE29 HH06

Claims (6)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】つぎの組成式で示される緑色発光希土類アルミノ・硼酸塩蛍光体を含有する蛍光膜から構成されることを特徴とする表示・発光装置。 1. A next display and light emitting device characterized in that it is composed of phosphor layer containing a green emitting rare-earth alumino-borate phosphor represented by the composition formula. LnAl 3412 :Tb (ただし、LnはLa,Y,Gd,LuおよびScの中から選ばれた少なくとも1種類の元素である) LnAl 3 B 4 O 12: Tb ( although, Ln is at least one element selected La, Y, Gd, from among Lu and Sc)
  2. 【請求項2】請求項1における希土類アルミノ・硼酸塩蛍光体が好ましくは次の組成式で示される緑色蛍光体であることを特徴とする表示・発光装置。 2. A display and light-emitting device characterized in that is preferably a rare earth alumino borate phosphor in claim 1, which is a green phosphor represented by the following composition formula. (Y 1-xy Gd x Tb y )Al 3412 (ただし、0≦x≦0.85、0.15≦y≦0.65 (Y 1-xy Gd x Tb y) Al 3 B 4 O 12 ( provided that, 0 ≦ x ≦ 0.85,0.15 ≦ y ≦ 0.65
    である) In it)
  3. 【請求項3】プラズマ表示パネルの緑色蛍光膜を構成する緑色発光蛍光体は請求項1または2の蛍光体、2価マンガン付活アルミン酸バリウム−マグネシウム蛍光体および2価マンガン付活ケイ酸亜鉛蛍光体の中から選ばれた少なくとも1種類の蛍光体からなる蛍光膜を備えたプラズマパネルで構成されることを特徴とするプラズマディスプレイ装置。 3. A green-emitting phosphor is the phosphor according to claim 1 or 2 forming the green phosphor layer of a plasma display panel, bivalent manganese activated barium aluminate - magnesium phosphor and bivalent manganese activated zinc silicate a plasma display apparatus, characterized in that it is composed of a plasma panel comprising at least one phosphor layer comprising a phosphor selected from among phosphors.
  4. 【請求項4】緑色成分として請求項1または2の緑色蛍光体からなる蛍光膜を有することを特徴とする平面型希ガス放電蛍光ランプ。 4. A flat type rare gas discharge fluorescent lamp and having a fluorescent film made of a green phosphor according to claim 1 or 2 as a green component.
  5. 【請求項5】緑色成分として請求項1または2の緑色蛍光体からなる蛍光膜を有することを特徴とする三波長型希ガス放電白色蛍光ランプ。 5. A green component as claimed in claim 1 or a three-wavelength type rare gas discharge white fluorescent lamp and having a phosphor layer composed of two of the green phosphor.
  6. 【請求項6】緑色成分として請求項1または2の緑色蛍光体からなる蛍光膜を有することを特徴とする電界放射型ディスプレイ。 6. The field emission display characterized by having a phosphor layer made of a green phosphor according to claim 1 or 2 as a green component.
JP36221999A 1999-12-21 1999-12-21 Display and light emitting device Pending JP2001172626A (en)

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