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JP2003142004A - Luminous device and display device using the same - Google Patents

Luminous device and display device using the same

Info

Publication number
JP2003142004A
JP2003142004A JP2001333675A JP2001333675A JP2003142004A JP 2003142004 A JP2003142004 A JP 2003142004A JP 2001333675 A JP2001333675 A JP 2001333675A JP 2001333675 A JP2001333675 A JP 2001333675A JP 2003142004 A JP2003142004 A JP 2003142004A
Authority
JP
Japan
Prior art keywords
phosphor
alkaline earth
element selected
light emitting
chemical formula
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
Application number
JP2001333675A
Other languages
Japanese (ja)
Other versions
JP4123758B2 (en
Inventor
Masatoshi Shiiki
正敏 椎木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2001333675A priority Critical patent/JP4123758B2/en
Priority to TW091124800A priority patent/TWI290329B/en
Priority to CNB021470863A priority patent/CN100405522C/en
Priority to CN 200610141650 priority patent/CN1932930B/en
Priority to KR1020020066323A priority patent/KR20030036017A/en
Priority to US10/283,140 priority patent/US7138965B2/en
Publication of JP2003142004A publication Critical patent/JP2003142004A/en
Priority to US11/526,620 priority patent/US7871542B2/en
Application granted granted Critical
Publication of JP4123758B2 publication Critical patent/JP4123758B2/en
Priority to KR1020090033681A priority patent/KR101006535B1/en
Priority to KR1020100016620A priority patent/KR101040627B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Luminescent Compositions (AREA)

Abstract

PROBLEM TO BE SOLVED: To prolong the lives of a display device and a luminous device. SOLUTION: This display uses a blue phosphor [a divalent europium-activated alkali earth silicate phosphor] having the following composition, and showing high performance under excitation by vacuum ultraviolet region ultraviolet rays and low speed electron beam. Composition formula: (Ae)a-c(Ae')bSixOy:Euc (Where, Ae is at least one kind of alkali earth element selected from Sr, Ca and Ba, and Ae' is at least one element selected from Mg and Zn. Moreover, a is 1 or 2, b is 1 or 0, and x is 1 or 2, and y is 4, 6, or 7.). Therefore, the lives of the luminous device and the display device can be improved.

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発光する蛍光体を蛍光膜とし
て備えたプラズマディスプレイ及び電界放射型ディスプ
レイの技術に係り、発光装置及びこれを用いた表示装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display and a field emission display provided with a fluorescent substance as a fluorescent film which emits light when excited by a rare gas resonance ultraviolet ray or a slow electron beam in a vacuum ultraviolet region (wavelength: 200 nm or less). The present invention relates to a light emitting device and a display device using the same.

【0002】[0002]

【従来の技術】表示および発光装置の薄型化傾向に伴
い,プラズマディスプレイ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)装置の高性能化も
進行している。プラズマディスプレイ装置は,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は,147nmお
よび172nm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。また,液晶表示装置においては,現在
バックライト用として直管型白色蛍光ランプが使用され
ているが表示画面の輝度向上ならびに環境上の水銀レス
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,これに
は希ガス共鳴線励起用蛍光体が使用される。
2. Description of the Related Art Along with the trend toward thinner display and light emitting devices, the performance of plasma display devices, liquid crystal display devices, and field emission display (FED) devices has been improved. The plasma display device has a fluorescent light arranged in the discharge space as an excitation source of ultraviolet rays (at 147 nm and 172 nm when xenon is used as a rare gas) generated in a negative glow region in a minute discharge space containing a rare gas. It is a method of displaying color by making the body emit light. Further, in the liquid crystal display device, a straight tube type white fluorescent lamp is currently used as a backlight, but there is also a demand for improving the brightness of the display screen and reducing mercury to the environment. Measures for solving these problems As a flat type rare gas discharge fluorescent lamp, a fluorescent substance for exciting a rare gas resonance line is used for this.

【0003】[0003]

【発明が解決しようとする課題】プラズマディスプレイ
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い。現行のPDP用青色蛍
光体 (BaMgAl10O17:Eu、以下BAMと略称す
る)については長寿命化,発光効率向上などが望まれて
いる。
The performance of plasma display devices, rare gas discharge light-emitting devices (fluorescent lamps, etc.), and field emission display (FED) devices largely depends on the performance of the phosphor. With regard to the current blue phosphor for PDP (BaMgAl10O17: Eu, hereinafter abbreviated as BAM), it is desired to prolong the life and improve the luminous efficiency.

【0004】[0004]

【課題を解決するための手段】先に本発明者等は電子線
用青色蛍光体として,2価ユ−ロピウム付活アルカリ土
類珪酸塩蛍光体を開発した[特開昭64−6087、特
開平01−167394]が,真空紫外領域紫外線並び
に低速電子線での評価は未検討であった。今般,本蛍光
体につき真空紫外領域紫外線並びに低速電子線励起下に
おいて良色調かつ高発光効率を有する組成を見出し本発
明に至った。
The present inventors have previously developed a divalent europium-activated alkaline earth silicate phosphor as a blue phosphor for electron beams [JP-A-64-6087, Kaihei 01-167394], but evaluation using ultraviolet rays in the vacuum ultraviolet region and slow electron beams has not been examined. Recently, the inventors of the present invention have found a composition having a good color tone and a high luminous efficiency under the excitation of ultraviolet rays in the vacuum ultraviolet region and low-speed electron beam, and completed the present invention.

【0005】本発明の蛍光体は,次の組成式で示される
ことを特徴とする。 (Ae)a-c(Ae‘)bSixOy:Euc 但し、AeはSr,CaそしてBaの中から選ばれた少
なくとも1種類のアルカリ土類元素である。また、Ae
‘はMgそしてZnの中から選ばれた少なくとも1種類
の元素である。上記化学式でaは1または2であり,bは
1または0である。さらに,xは1または2であり,yが
4,6または7である。また,cは以下の範囲の数であ
る。 0.01≦x≦0.3 そして,本発明のプラズマディスプレイ装置,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成る蛍光膜を備えた表示および
発光装置である。
The phosphor of the present invention is characterized by having the following composition formula. (Ae) ac (Ae ') bSixOy: Euc However, Ae is at least one alkaline earth element selected from Sr, Ca, and Ba. Also, Ae
'Is at least one element selected from Mg and Zn. In the above chemical formula, a is 1 or 2 and b is 1 or 0. Further, x is 1 or 2 and y is 4, 6 or 7. Further, c is a number in the following range. 0.01 ≦ x ≦ 0.3 The plasma display device, the rare gas discharge light emitting device, and the field emission display (FED) device of the present invention are both display and light emitting devices provided with the phosphor film made of the above phosphor. .

【0006】[0006]

【発明の実施の形態】本発明者等は寿命が良く,かつ高
効率の青色発光2価ユ−ロピウム付活アルカリ土類珪酸
塩蛍光体を開発し,これを青色成分として用いることに
より,高性能のプラズマディスプレイ装置,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。以下,本発明の実施例を説明す
る。
BEST MODE FOR CARRYING OUT THE INVENTION The present inventors have developed a blue-emitting divalent europium-activated alkaline earth silicate phosphor having a long life and high efficiency. It was possible to obtain a high-performance plasma display device, a rare gas discharge light-emitting device, and a field emission display (FED) device. Examples of the present invention will be described below.

【0007】本発明の代表的蛍光体は次のようにして合
成される。蛍光体原料としては、炭酸ストロンチウム等
のアルカリ土類炭酸塩化合物、炭酸亜鉛等の亜鉛化合
物、弗化ユ−ロピウム等のユ−ロピウム化合物、酸化珪
素等の珪素化合物、塩化アンモニウム等のハロゲン化ア
ンモニウム化合物を用い,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充分良く混合する。
この混合物を熔融アルミナルツボ等の耐熱容器に充填
し,2回焼成を行う。初めの焼成は空気中,800℃で
行い,2回目は5%水素混合窒素ガス雰囲気中で125
0℃の温度で焼成する。この焼成物は粉砕後,水洗,乾
燥を行ない本発明の青色発光蛍光体を得る。 [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。
The representative phosphor of the present invention is synthesized as follows. Examples of the phosphor raw material include alkaline earth carbonate compounds such as strontium carbonate, zinc compounds such as zinc carbonate, europium compounds such as europium fluoride, silicon compounds such as silicon oxide, and ammonium halides such as ammonium chloride. Using a compound, each of these raw materials is weighed and sampled according to the composition formula, and sufficiently mixed by a wet or dry method.
This mixture is filled in a heat-resistant container such as a fused alumina crucible and fired twice. The first firing is performed in air at 800 ° C, and the second firing is performed in a 5% hydrogen mixed nitrogen gas atmosphere at 125 ° C.
Bake at a temperature of 0 ° C. The fired product is pulverized, washed with water and dried to obtain the blue light emitting phosphor of the present invention. [Example 1] Table 1 shows the composition and relative emission intensity of the phosphors.

【0008】[0008]

【表1】 このうち試料5の蛍光体は次のように合成した。即ち、
下記原料 BaCO3:0.3molx0.1 5.92g SrCO3:0.3molx0.1 4.42g CaCO3:0.3molx0.1 3.00g MgCO3:1molx0.1 8.43g SiO2:1molx0.1 6.01g Eu2O3:0.1molx0.05 1.76g NH4Cl:0.1g を秤取り,必要な量を充分に良く混合した後、この混合
物を熔融アルミナルツボ等の耐熱容器に充填し、空気中
800℃で、次いで5%水素混合窒素ガス雰囲気中12
50℃の温度で焼成する。この焼成物は粉砕後、水洗、
乾燥を行ない青色発光蛍光体を得た。この他の蛍光体も
同様にして合成した。その後,147nm真空紫外線励
起下での同蛍光体の発光輝度を現行蛍光体BAMのそれ
を100%とした場合の各試料の相対発光強度を求め
た。その結果は,表1に示すとおり,100%〜115
%である。また,これらの蛍光体の寿命特性が,比較試
料より向上していることを確認した。 [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2に記載したCa,Sr,Ba,そしてMg
またはZnで一部置換した蛍光体(試料9〜20)を合成
した。これらの蛍光体はいずれも147nm紫外線励起
下で比較的に高い発光輝度を有するものであることがわ
かった。具体的な発光強度は,表2に示す。また,これ
らの蛍光体の寿命特性は,比較試料より向上しているこ
とを確認した。 [実施例3]青色蛍光膜を構成する青色蛍光体として本
発明による2価ユ−ロピウム付活アルカリ土類珪酸塩蛍
光体(表1及び2に示す組成)を用いてプラズマディス
プレイパネル(PDP)を作製した。
[Table 1] Of these, the phosphor of Sample 5 was synthesized as follows. That is,
Raw materials below BaCO3: 0.3molx0.1 5.92g SrCO3: 0.3molx0.1 4.42g CaCO3: 0.3molx0.1 3.00g MgCO3: 1molx0.1 8.43g SiO2: 1molx0.1 6.01g Eu2O3: 0.1molx0.05 1.76g NH4Cl: After weighing 0.1 g and mixing the required amount well, this mixture was filled in a heat-resistant container such as a fused alumina crucible and kept in air at 800 ° C. and then in a 5% hydrogen-mixed nitrogen gas atmosphere.
Bake at a temperature of 50 ° C. This fired product is crushed, washed with water,
After drying, a blue light emitting phosphor was obtained. Other phosphors were similarly synthesized. Then, the relative emission intensity of each sample was calculated when the emission brightness of the same phosphor under the excitation of 147 nm vacuum ultraviolet light was 100% of that of the current phosphor BAM. The results are, as shown in Table 1, 100% to 115%.
%. In addition, it was confirmed that the lifetime characteristics of these phosphors were improved compared to the comparative sample. [Example 2] Ca, Sr, Ba, and Mg shown in Table 2 were prepared by using the above-mentioned raw materials and following the same synthetic process.
Alternatively, phosphors (Samples 9 to 20) partially substituted with Zn were synthesized. It was found that each of these phosphors had a relatively high emission brightness under the excitation of 147 nm ultraviolet light. The specific emission intensity is shown in Table 2. It was also confirmed that the lifetime characteristics of these phosphors were improved compared to the comparative sample. Example 3 A plasma display panel (PDP) using the divalent europium-activated alkaline earth silicate phosphor (composition shown in Tables 1 and 2) according to the present invention as a blue phosphor constituting a blue phosphor film. Was produced.

【0009】[0009]

【表2】 本実施の形態のような面放電型カラーPDPのPDPで
は,例えば,表示電極(一般に,走査電極と呼ぶ。)に
負の電圧を,アドレス電極と表示電極に正の電圧(表示
電極に印加される電圧に比して正の電圧)を印加するこ
とにより放電が発生し,これにより,表示電極間で放電
を開始するための補助となる壁電荷が形成される(これ
を書き込みと称する。)この状態で表示電極と表示電極
との間に,適当な逆の電圧を印加すると,誘電体(及び
保護層)を介して,両電極の間の放電空間で放電が発生
する。放電終了後,表示電極と表示電極とに印加する電
圧を逆にすると,新たに放電が発生する。これを繰り返
すことにより継続的に放電が発生する(これを維持放電
又は表示放電と呼ぶ)。
[Table 2] In the PDP of the surface discharge type color PDP as in this embodiment, for example, a negative voltage is applied to the display electrodes (generally called scan electrodes), and a positive voltage is applied to the address electrodes and the display electrodes (display electrodes are applied. Discharge is generated by applying a positive voltage in comparison with the voltage applied to the wall, thereby forming a wall charge that assists in starting the discharge between the display electrodes (this is called writing). When an appropriate reverse voltage is applied between the display electrodes in this state, a discharge is generated in the discharge space between the electrodes via the dielectric (and the protective layer). When the voltage applied to the display electrode and the display electrode is reversed after the discharge is completed, a new discharge is generated. By repeating this, discharge is continuously generated (this is called sustain discharge or display discharge).

【0010】本実施の形態のPDPは,背面基板上に,
銀などで構成されているアドレス電極と,ガラス系の材
料で構成される誘電体層を形成した後,同じくガラス系
の材料で構成される隔壁材を厚膜印刷し,ブラストマス
クを用いて,ブラスト除去により,隔壁を形成する。次
に,この隔壁上に,赤,緑,青の各蛍光体層を該当する
隔壁間の溝面を被覆する形で,順次ストライプ状に形成
する。
The PDP of this embodiment has a rear substrate,
After forming an address electrode composed of silver or the like and a dielectric layer composed of a glass-based material, a partition material also composed of a glass-based material is thick-film printed, and using a blast mask, A partition is formed by removing the blast. Next, red, green, and blue phosphor layers are sequentially formed on the barrier ribs in a stripe shape so as to cover the groove surfaces between the barrier ribs.

【0011】ここで,各蛍光体層は,赤,緑,青に対応
し,赤蛍光体粒子40重量部(ビヒクル60重量部),
緑蛍光体粒子35重量部(ビヒクル65重量部),青蛍
光体粒子35重量部(ビヒクル65重量部)とし,それ
ぞれビヒクルと混ぜて蛍光体ペーストとし,スクリーン
印刷により塗布したあと,乾燥及び焼成工程により蛍光
体ペースト内の揮発成分の蒸発と有機物の燃焼除去を行
って形成する。なお,本実施の形態で用いた蛍光体層
は,中央粒径が3μmの各蛍光体粒子で構成されてい
る。
Here, each phosphor layer corresponds to red, green, and blue, and 40 parts by weight of red phosphor particles (60 parts by weight of vehicle),
35 parts by weight of green phosphor particles (65 parts by weight of vehicle) and 35 parts by weight of blue phosphor particles (65 parts by weight of vehicle) are mixed with a vehicle to form a phosphor paste, which is applied by screen printing and then dried and baked. Is formed by evaporating volatile components in the phosphor paste and removing organic substances by burning. The phosphor layer used in the present embodiment is composed of each phosphor particle having a median particle diameter of 3 μm.

【0012】また,各蛍光体の材料は,赤蛍光体は(Y,G
d)BO3:Eu蛍光体とY2O3:Eu蛍光体1:1の混合物であ
り,緑蛍光体はZn2SiO4:Mn蛍光体である。
The material of each phosphor is (Y, G
d) It is a mixture of BO3: Eu phosphor and Y2O3: Eu phosphor 1: 1, and the green phosphor is Zn2SiO4: Mn phosphor.

【0013】次に,表示電極,バス電極,誘電体層,保
護層を形成した前面基板と,背面基板をフリット封着
し,パネル内を真空排気した後放電ガスを注入し封止す
る。本実施の形態のPDPは,そのサイズが3型で一画
素のピッチが1000μmx1000μmである。次
に,実施例1及び2で形成した各蛍光体を用いて,赤,
緑光体は同一の材料を使用し,各蛍光体層25に充填し
たプラズマディスプレイ装置を作製し,初期輝度及び寿
命特性を調べた。このパネルは青色蛍光体のみを2価ユ
−ロピウム付活アルミン酸バリウム・マグネシウム蛍光
体に換えて製作した従来品に比較して色調がよく、かつ
高輝度で長寿命を有するものであった。初期輝度は,表
2の各蛍光体に関し記載した粉体の相対発光強度とほぼ
同等の結果が得られた。また寿命性能では,すべての蛍
光体(表1及び表2に示すすべての組成)が,比較蛍光
体を上回る結果を示した。また,この実施例では赤及び
緑の蛍光体に関して,詳細な検討結果を示していない
が,以下に示す各組成の蛍光体でも同様にPDPを作製
することができる。
Next, the front substrate having the display electrodes, the bus electrodes, the dielectric layer, and the protective layer formed thereon and the rear substrate are frit-sealed, the interior of the panel is evacuated, and then a discharge gas is injected to seal it. The PDP of this embodiment has a size of 3 type and a pitch of one pixel is 1000 μm × 1000 μm. Next, using each phosphor formed in Examples 1 and 2, red,
The same material was used for the green phosphor, and a plasma display device in which each phosphor layer 25 was filled was manufactured, and the initial luminance and life characteristics were examined. This panel had a good color tone, high brightness and a long life as compared with the conventional product produced by replacing only the blue phosphor with a divalent europium-activated barium-magnesium aluminate phosphor. The initial luminance was almost the same as the relative emission intensity of the powders described for each phosphor in Table 2. In terms of lifetime performance, all phosphors (all compositions shown in Tables 1 and 2) showed results exceeding those of comparative phosphors. Further, in this example, detailed examination results are not shown for the red and green phosphors, but the PDP can be similarly prepared with the phosphors having the respective compositions shown below.

【0014】赤蛍光体では,(Y,Gd)BO3:Eu,(Y,Gd)2O3:
Eu,(Y,Gd)(P,V)O4:Euのいずれか一種以上の蛍光体を含
む場合が可能である。また,緑蛍光体は, Zn2SiO4:M
n,(Y,Gd,Sc)2SiO5:Tb,(Y,Gd)3(Al,Ga)5O12:Tb,(Y,Gd)
3(Al,Ga)5O12:Ce,(Y,Gd)B3O6:Tb,(Y,Gd)PO4:Tbの群
から選ばれた一種以上の蛍光体を含む場合が可能であ
る。さらに,ここに示していない蛍光体との組合せも適
用できる。 [実施例4]青色蛍光体色として本発明による2価ユ−
ロピウム付活アルカリ土類珪酸塩蛍光体(表1に示す組
成)を,緑色蛍光体として2価マンガン付活珪酸亜鉛蛍
光体を,そして赤色蛍光体には3価ユ−ロピウム付活酸
化イットリウム・ガドリニ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。 この
ランプは青色蛍光体のみを2価ユ−ロピウム付活アルミ
ン酸バリウム・マグネシウム蛍光体に換えて製作した従
来品に比較して高発光効率かつ長寿命を有するものであ
った。 [実施例5]青色蛍光体として本発明による2価ユ−ロ
ピウム付活アルカリ土類珪酸塩蛍光体(表2に示す組
成)を,緑色蛍光体として2価マンガン付活珪酸亜鉛蛍
光体を,そして赤色蛍光体には3価ユ−ロピウム付活酸
化イットリウム・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。こ
のランプは青色蛍光体のみを2価ユ−ロピウム付活アル
ミン酸バリウム・マグネシウム蛍光体に換えて製作した
従来品に比較して高発光効率かつ長寿命を有するもので
あった。 [実施例6]ここでは,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。次に、青色蛍光
膜を構成する青色蛍光体として本発明による2価ユ−ロ
ピウム付活アルカリ土類珪酸塩蛍光体(表1及び表2に
示す組成)を,緑色蛍光膜を構成する緑色蛍光体として
2価マンガン付活珪酸亜鉛蛍光体を,そして赤色蛍光膜
を構成する赤色蛍光体として3価ユ−ロピウム付活酸化
イットリウム・ガドリニウム蛍光体を順次形成した。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。このパネルは従来の青色蛍光体のみを2価ユ−ロピ
ウム付活アルミン酸バリウム・マグネシウム蛍光体に換
えて製作したFEDパネルより高効率,かつ長寿命の特
性を示した。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,良い表示品質が得られること
を確認した。上述の通り、真空紫外領域紫外線および低
速電子線励起下において効率の高い青色蛍光体[2価ユ
−ロピウム付活アルカリ土類珪酸塩蛍光体]を希ガス放
電表示・発光装置,または電界放射型ディスプレイ(F
ED)装置に用いることにより,長寿命化を実現でき
た。
In the red phosphor, (Y, Gd) BO3: Eu, (Y, Gd) 2O3:
It is possible to include one or more phosphors of Eu, (Y, Gd) (P, V) O4: Eu. The green phosphor is Zn2SiO4: M.
n, (Y, Gd, Sc) 2SiO5: Tb, (Y, Gd) 3 (Al, Ga) 5O12: Tb, (Y, Gd)
It is possible to include one or more phosphors selected from the group of 3 (Al, Ga) 5O12: Ce, (Y, Gd) B3O6: Tb, (Y, Gd) PO4: Tb. Furthermore, combinations with phosphors not shown here are also applicable. [Example 4] A divalent unit according to the present invention as a blue phosphor color
Ropium-activated alkaline earth silicate phosphor (composition shown in Table 1), divalent manganese-activated zinc silicate phosphor as green phosphor, and trivalent europium-activated yttrium oxide as red phosphor. Noble gas using gadolinium phosphor
(Xenon gas) discharge white fluorescent lamp was manufactured. This lamp had a high luminous efficiency and a long life as compared with the conventional product produced by replacing only the blue phosphor with a divalent europium-activated barium-magnesium aluminate phosphor. Example 5 The divalent europium-activated alkaline earth silicate phosphor according to the present invention (composition shown in Table 2) was used as the blue phosphor, and the divalent manganese-activated zinc silicate phosphor was used as the green phosphor. Then, a trivalent europium-activated yttrium-gadolinium oxide phosphor was used as the red phosphor to manufacture a flat rare gas (xenon gas) discharge white fluorescent lamp. This lamp had a high luminous efficiency and a long life as compared with the conventional product produced by replacing only the blue phosphor with a divalent europium-activated barium-magnesium aluminate phosphor. Example 6 Here, first, a uniform transparent electrode was formed on the inner surface of the glass substrate on which the fluorescent film was formed. Next, the divalent europium-activated alkaline earth silicate phosphor according to the present invention (composition shown in Table 1 and Table 2) was used as the blue phosphor forming the blue phosphor film, and the green phosphor forming the green phosphor film. A divalent manganese-activated zinc silicate phosphor was formed as a phosphor, and a trivalent europium-activated yttrium-gadolinium oxide phosphor was sequentially formed as a red phosphor forming a red phosphor layer. This glass substrate and another glass substrate in which a minute electron beam source was made were put together and sealed, and after evacuation, a 10-inch field emission display (FED) panel was manufactured. This panel exhibited higher efficiency and longer life than the FED panel manufactured by replacing the conventional blue phosphor only with the divalent europium-activated barium-magnesium aluminate phosphor. It was confirmed that a good display quality was obtained when a display panel was constructed using this panel and used as a display system for televisions, videos, automobiles and the like. As described above, the blue phosphor [divalent europium-activated alkaline earth silicate phosphor] having high efficiency under the vacuum ultraviolet region ultraviolet light and low-speed electron beam excitation is used as a rare gas discharge display / light emitting device or a field emission type device. Display (F
By using it in an ED) device, a longer life could be realized.

【0015】[0015]

【発明の効果】本発明の発光装置及び表示装置は長寿命
である。
The light emitting device and the display device of the present invention have a long life.

───────────────────────────────────────────────────── 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) C09K 11/81 C09K 11/81 11/83 CPK 11/83 CPK CQA CQA H01J 29/20 H01J 29/20 31/12 31/12 C 61/44 61/44 N Fターム(参考) 4H001 CA04 CA05 CA06 XA05 XA08 XA12 XA13 XA14 XA15 XA20 XA21 XA23 XA30 XA31 XA38 XA39 XA56 XA64 YA25 YA58 YA63 YA65 5C036 EG36 EH12 5C040 GG08 KB02 MA10 5C043 AA07 CC09 DD28 EB04 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C09K 11/81 C09K 11/81 11/83 CPK 11/83 CPK CQA CQA H01J 29/20 H01J 29/20 31 / 12 31/12 C 61/44 61/44 NF Term (reference) 4H001 CA04 CA05 CA06 XA05 XA08 XA12 XA13 XA14 XA15 XA20 XA21 XA23 XA30 XA31 XA38 XA39 XA56 XA64 YA25 YA58 YA63 YA65 5C036C040 AEG 5GG0808 5A08 5G0808 5A08 5A08 5A08A5 CC09 DD28 EB04

Claims (10)

【特許請求の範囲】[Claims] 【請求項1】次の化学式で示される青色発光2価ユ−ロ
ピウム付活アルカリ土類珪酸塩蛍光体を含有する蛍光膜
を備えたことを特徴とする発光装置。 (Ae)a-c(Ae‘)bSixOy:Euc (但し、AeはSr,CaそしてBaの中から選ばれた
少なくとも1種類のアルカリ土類元素である。また、A
e‘はMgそしてZnの中から選ばれた少なくとも1種
類の元素である。上記化学式でaは1または2であり,b
は1または0である。さらに,xは1または2であり,y
が4,6または7である。)
1. A light emitting device comprising a phosphor film containing a blue light emitting divalent europium activated alkaline earth silicate phosphor represented by the following chemical formula. (Ae) ac (Ae ') bSixOy: Euc (where Ae is at least one alkaline earth element selected from Sr, Ca and Ba.
e'is at least one element selected from Mg and Zn. In the above chemical formula, a is 1 or 2 and b
Is 1 or 0. Furthermore, x is 1 or 2, and y
Is 4, 6 or 7. )
【請求項2】前記青色発光2価ユ−ロピウム付活アルカ
リ土類珪酸塩蛍光体が次の組成式で示されることを特徴
とする請求項1記載の発光装置。 (Ae)2-c(Ae‘)Si2O7:Euc (但し、AeはSr,CaそしてBaの中から選ばれた
少なくとも1種類のアルカリ土類元素である。また、A
e‘はMgそしてZnの中から選ばれた少なくとも1種
類の元素である。cは0.01≦x≦0.3である。)
2. The light emitting device according to claim 1, wherein the blue light emitting divalent europium-activated alkaline earth silicate phosphor is represented by the following composition formula. (Ae) 2-c (Ae ') Si2O7: Euc (where Ae is at least one alkaline earth element selected from Sr, Ca and Ba.
e'is at least one element selected from Mg and Zn. c is 0.01 ≦ x ≦ 0.3. )
【請求項3】前記青色発光2価ユ−ロピウム付活アルカ
リ土類珪酸塩蛍光体が次の組成式で示されることを特徴
とする請求項1記載の発光装置。 (Ae)1-c(Ae‘)Si2O6:Euc (但し、AeはSr,CaそしてBaの中から選ばれた
少なくとも1種類のアルカリ土類元素である。また、A
e‘はMgそしてZnの中から選ばれた少なくとも1種
類の元素である。cは0.01≦x≦0.3である。)
3. The light emitting device according to claim 1, wherein the blue light emitting divalent europium-activated alkaline earth silicate phosphor is represented by the following composition formula. (Ae) 1-c (Ae ') Si2O6: Euc (where Ae is at least one alkaline earth element selected from Sr, Ca and Ba.
e'is at least one element selected from Mg and Zn. c is 0.01 ≦ x ≦ 0.3. )
【請求項4】前記青色発光2価ユ−ロピウム付活アルカ
リ土類珪酸塩蛍光体の組成式のAe‘サイトが,(Mg1-
dZnd)で表わされ,dが0<d≦1の範囲にあることを特
徴とする請求項1乃至3に記載の発光装置。
4. The Ae ′ site of the composition formula of the blue-emitting divalent europium-activated alkaline earth silicate phosphor is (Mg1-
dZnd), and d is in the range of 0 <d ≦ 1.
【請求項5】発光装置が,間隔を介して対向配置された
一対の基板と,前記一対の基板間に形成された,放電に
より紫外線を発生するガスが封入された放電ガス空間
と,前記一対の基板の対向面の夫々に形成された電極
と,前記一対の基板の一方の,前記放電ガス空間に接す
る面に形成された蛍光体層とを有し、前記蛍光体層のう
ち赤蛍光体層が,(Y,Gd)BO3:Eu,(Y,Gd)2O3:Eu,(Y,G
d)(P,V)O4:Euから選ばれる少なくとも一種以上の蛍光体
を有しているプラズマディスプレイであることを特徴と
する発光装置。
5. A light emitting device, a pair of substrates arranged to face each other with a gap, a discharge gas space formed between the pair of substrates and filled with a gas for generating ultraviolet rays by electric discharge, and the pair of substrates. An electrode formed on each of the opposing surfaces of the substrates, and a phosphor layer formed on a surface of one of the pair of substrates in contact with the discharge gas space. The layers are (Y, Gd) BO3: Eu, (Y, Gd) 2O3: Eu, (Y, G
d) A light-emitting device, which is a plasma display having at least one phosphor selected from (P, V) O4: Eu.
【請求項6】前記蛍光体層のうち緑蛍光体層がZn2SiO4:
Mn,(Y,Gd,Sc)2SiO5:Tb,(Y,Gd)3(Al,Ga)5O12:Tb,(Y,G
d)3(Al,Ga)5O12:Ce,(Y,Gd)B3O6:Tb,(Y,Gd)PO4:Tbか
ら成る群から選ばれた少なくとも一種以上の蛍光体を有
しているプラズマディスプレイであることを特徴とする
請求項5記載の発光装置。
6. The green phosphor layer among the phosphor layers is Zn2SiO4:
Mn, (Y, Gd, Sc) 2SiO5: Tb, (Y, Gd) 3 (Al, Ga) 5O12: Tb, (Y, G
d) A plasma display having at least one phosphor selected from the group consisting of 3 (Al, Ga) 5O12: Ce, (Y, Gd) B3O6: Tb and (Y, Gd) PO4: Tb. The light emitting device according to claim 5, wherein the light emitting device is provided.
【請求項7】次の化学式で示される青色発光2価ユ−ロ
ピウム付活アルカリ土類珪酸塩蛍光体を含有する蛍光膜
を備えた発光装置を有することを特徴とする表示装置。 (Ae)a-c(Ae‘)bSixOy:Euc (但し、AeはSr,CaそしてBaの中から選ばれた
少なくとも1種類のアルカリ土類元素である。また、A
e‘はMgそしてZnの中から選ばれた少なくとも1種
類の元素である。上記化学式でaは1または2であり,b
は1または0である。さらに,xは1または2であり,y
が4,6または7である。)
7. A display device comprising a light-emitting device having a phosphor film containing a blue-emitting divalent europium-activated alkaline earth silicate phosphor represented by the following chemical formula. (Ae) ac (Ae ') bSixOy: Euc (where Ae is at least one alkaline earth element selected from Sr, Ca and Ba.
e'is at least one element selected from Mg and Zn. In the above chemical formula, a is 1 or 2 and b
Is 1 or 0. Furthermore, x is 1 or 2, and y
Is 4, 6 or 7. )
【請求項8】次の化学式で示される青色発光2価ユ−ロ
ピウム付活アルカリ土類珪酸塩蛍光体を含有する蛍光膜
を備えた平面型希ガス放電蛍光ランプを用いたことを特
徴とする表示装置。 (Ae)a-c(Ae‘)bSixOy:Euc (但し、AeはSr,CaそしてBaの中から選ばれた
少なくとも1種類のアルカリ土類元素である。また、A
e‘はMgそしてZnの中から選ばれた少なくとも1種
類の元素である。上記化学式でaは1または2であり,b
は1または0である。さらに,xは1または2であり,y
が4,6または7である。)
8. A flat rare gas discharge fluorescent lamp provided with a fluorescent film containing a blue-emitting divalent europium-activated alkaline earth silicate phosphor represented by the following chemical formula: Display device. (Ae) ac (Ae ') bSixOy: Euc (where Ae is at least one alkaline earth element selected from Sr, Ca and Ba.
e'is at least one element selected from Mg and Zn. In the above chemical formula, a is 1 or 2 and b
Is 1 or 0. Furthermore, x is 1 or 2, and y
Is 4, 6 or 7. )
【請求項9】次の化学式で示される青色発光2価ユ−ロ
ピウム付活アルカリ土類珪酸塩蛍光体を含有する蛍光膜
を備えた三波長型白色蛍光ランプを用いたことを特徴と
する表示装置。 (Ae)a-c(Ae‘)bSixOy:Euc (但し、AeはSr,CaそしてBaの中から選ばれた
少なくとも1種類のアルカリ土類元素である。また、A
e‘はMgそしてZnの中から選ばれた少なくとも1種
類の元素である。上記化学式でaは1または2であり,b
は1または0である。さらに,xは1または2であり,y
が4,6または7である)
9. A display characterized by using a three-wavelength white fluorescent lamp provided with a fluorescent film containing a blue-emitting divalent europium-activated alkaline earth silicate phosphor represented by the following chemical formula. apparatus. (Ae) ac (Ae ') bSixOy: Euc (where Ae is at least one alkaline earth element selected from Sr, Ca and Ba.
e'is at least one element selected from Mg and Zn. In the above chemical formula, a is 1 or 2 and b
Is 1 or 0. Furthermore, x is 1 or 2, and y
Is 4, 6 or 7)
【請求項10】次の化学式で示される青色発光2価ユ−
ロピウム付活アルカリ土類珪酸塩蛍光体を含有する蛍光
膜を備えた電界放射型ディスプレイ装置を用いたことを
特徴とする表示装置。 (Ae)a-c(Ae‘)bSixOy:Euc (但し、AeはSr,CaそしてBaの中から選ばれた
少なくとも1種類のアルカリ土類元素である。また、A
e‘はMgそしてZnの中から選ばれた少なくとも1種
類の元素である。上記化学式でaは1または2であり,b
は1または0である。さらに,xは1または2であり,y
が4,6または7である。)
10. A blue light emitting divalent unit represented by the following chemical formula:
A display device comprising a field emission display device having a phosphor film containing a rhodium-activated alkaline earth silicate phosphor. (Ae) ac (Ae ') bSixOy: Euc (where Ae is at least one alkaline earth element selected from Sr, Ca and Ba.
e'is at least one element selected from Mg and Zn. In the above chemical formula, a is 1 or 2 and b
Is 1 or 0. Furthermore, x is 1 or 2, and y
Is 4, 6 or 7. )
JP2001333675A 2001-10-30 2001-10-31 Light emitting device Expired - Fee Related JP4123758B2 (en)

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TW091124800A TWI290329B (en) 2001-10-30 2002-10-24 Plasma display device, luminescent device and image and information display system using the same
CN 200610141650 CN1932930B (en) 2001-10-30 2002-10-29 Plasma display device
CNB021470863A CN100405522C (en) 2001-10-30 2002-10-29 Plasma display unit, luminescent device and image display system
KR1020020066323A KR20030036017A (en) 2001-10-30 2002-10-30 Plasma display device, luminescent device and image and information display system using the same
US10/283,140 US7138965B2 (en) 2001-10-30 2002-10-30 Plasma display device, luminescent device and image and information display system using the same
US11/526,620 US7871542B2 (en) 2001-10-30 2006-09-26 Plasma display device, luminescent device and image and information display system using the same
KR1020090033681A KR101006535B1 (en) 2001-10-30 2009-04-17 Plasma display device, luminescent device and image and information display system using the same
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