JPS58168683A - Magnesium calcium silicate fluorescent material activated with bivalent europiun - Google Patents
Magnesium calcium silicate fluorescent material activated with bivalent europiunInfo
- Publication number
- JPS58168683A JPS58168683A JP5401582A JP5401582A JPS58168683A JP S58168683 A JPS58168683 A JP S58168683A JP 5401582 A JP5401582 A JP 5401582A JP 5401582 A JP5401582 A JP 5401582A JP S58168683 A JPS58168683 A JP S58168683A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- fluorescent material
- bivalent
- calcium silicate
- firing
- 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
【発明の詳細な説明】 するものである。[Detailed description of the invention] It is something to do.
現在用いられている電子線用蛍光体のＺｎ８：ムｇはＸ
線、電子線、紫外線等による刺激下で６色の発光を呈し
エネルギー効率および発光効率が高いことから従来から
主にテレビブラウン管用の蛍光体として利用されている
。しかしこのＺｎ８ ：ムｇ蛍光体は＊ｍ・−反特性が
他の蛍光体と比べると劣っていることが知られており、
比較的低い電流密度で呻匿飽相現象を示す。このことは
近年発展している投射型テレビ或いは目大カラーディス
プレー画曲の輝度または色調に大きな影暢を与えている
。Currently used electron beam phosphor Zn8: Mug is
It emits light in six colors when stimulated by radiation, electron beams, ultraviolet rays, etc., and has high energy efficiency and luminous efficiency, so it has been used mainly as a phosphor for television cathode ray tubes. However, this Zn8:mug phosphor is known to have inferior *m・- anti-characteristics compared to other phosphors.
It exhibits a saturated phase phenomenon at relatively low current densities. This has a great effect on the brightness and color tone of projection televisions and eye-sized color display pictures that have been developed in recent years.
この問題を改善すべ（Ｚｎ８：ムｇ蛍光体の改良、また
はこれに代わる新しい蛍光体を開発する試みが多くなさ
れている。Many attempts have been made to improve this problem (Zn8: Mg phosphor) or to develop a new phosphor to replace it.
本発明は、従来の青色蛍光体のＺｎ８ ：ムｇに代わる
電流輝度特性の優れた電子線用の新しい青色蛍光体を開
発することを目的としてなされたものであり、母体及び
付活剤について種々の検討を行なった結果珪酸マグネシ
ウム・カルシウム母体をＥｕ″にまり付活することによ
って従来のＺｎ８ ：ムｇ蛍光体と同様な発光波長分布
と輝度な持つ発光を示し。The present invention was made with the aim of developing a new blue phosphor for electron beams with excellent current luminance characteristics to replace the conventional blue phosphor Zn8:Mg. As a result of our studies, we found that by activating a magnesium/calcium silicate matrix with Eu'', it exhibited light emission with the same emission wavelength distribution and brightness as the conventional Zn8:Mg phosphor.
Ｚｎ８ ：ムｇ蛍光体よりも優れた電流・輝度特性を示
す蛍光体が得られることを見出し１本発明を完成させる
に至った。Zn8: It was discovered that a phosphor exhibiting better current and brightness characteristics than Mg phosphors could be obtained, and the present invention was completed.
本発明の蛍光体は組成式が
（（３ａ 、 Ｍｇ ） ８ｉｇｏｓ ： ＸＥｕｒ′
（但しＸは１０−１≦Ｘ≦ＩＩ Ｘ １０−１なる条件
を満たす数である。）
で表わされる２価のユーロビュームで付活した珪酸マグ
ネシウムカルシウム蛍光体である。The phosphor of the present invention has a composition formula ((3a, Mg)8igos:XEur'
(However, X is a number that satisfies the following conditions: 10-1≦X≦II x 10-1.) It is a magnesium calcium silicate phosphor activated with divalent eurobium expressed as follows.
本発明の蛍光体は以下に述べる方法で製造される。The phosphor of the present invention is manufactured by the method described below.
高純度の炭酸カルシウム（Ｃａ００ｓ） 、炭酸マグネ
シラＡ （ＭｇＣ０，）、硫酸カルシウム（Ｃａ ｓｏ
、 ） ｓ硫酸マグ＊ シ’ｙ Ａ （Ｍｇ８０．）、
塩化ｔｙ ルシウＡ （０ａ（Ｅｌ、）およびシリカ（
８ｉ０．）を所望の組成となる様に混合し、これに塩化
＠ｌユーロピューム（ＥｕＣ１１） ＊硫酸ｗｈｌ ニ
ー ｏピューム（Ｅｕ８０４）などの２価ユーロビュー
ム、マたは塩化第２ユーロビユーム（財）ｌρ。High purity calcium carbonate (Ca00s), magnesilla carbonate A (MgC0,), calcium sulfate (Ca so
, ) s sulfuric acid mag* し'y A (Mg80.),
ty chloride lucium A (0a (El,) and silica (
8i0. ) to obtain the desired composition, and divalent eurobium chloride (EuC11), divalent eurobium such as sulfuric acid (Eu804), or divalent eurobium chloride (EuC11).
酸化第２ニー〇ビユーム（Ｅ町Ｏ８）などの８価ニーｏ
ビュームの化合物を直接加えて、スラリーａ１合した後
、乾燥させ、これを耐熱性容器に入れて電気炉等で焼成
した後、炉外に取出して冷却するこ□１１
とによって本発明の蛍光体が得られる。付活剤となる２
価ユーロビューム化合物の濃度内が珪酸マグネシウムカ
ルシウムｆｆｈ体Ｌ（Ｃａ、Ｍｇ）８ｉ、Ｕ、） １モ
ルに対して１０−５ グラム旅子以下の場合にはＥｕ！
＋の添加効果が小さく、逆に８Ｘ１０−１グラム組子以
上だといわゆる濃度消光現象により発光輝度が昔しく誠
少するため、 Ｅｕ”＋の濃度（イ）は１Ｏ−６ないし
８Ｘ１０’ダラム原子の範囲にあることが好ましい。Octavalent nitrates such as secondary oxidized niobium (E town O8)
The phosphor of the present invention can be produced by directly adding the Buum compound to form a slurry a1, drying it, putting it in a heat-resistant container, firing it in an electric furnace, etc., and then taking it out of the furnace and cooling it. is obtained. Acting as an activator 2
If the concentration of the valent eurobium compound is less than 10-5 grams per mole of magnesium calcium silicate ffh form L(Ca, Mg)8i, U,), then Eu!
The effect of addition of + is small, and on the other hand, if it exceeds 8X10-1 gram muntin, the luminance will decrease due to the so-called concentration quenching phenomenon. It is preferable that it is in the range of .
焼成は加湿ガスを用いるのが好ましく窒素ガス（Ｎｆｆ
ｉ） 、アルゴンガス（ムｒ）などの中性雰囲気中また
は水素ガス（Ｈ８）及びＮ、ガスとの混合ガスなどの逮
元性ゴ囲気中および微還元性雰囲気中で行ない焼成の温
度および時間はそれぞれｓｏｏ’ｃないし１２５０：Ｃ
および１時間ないし６時間とするのが好ましい。なおＥ
ｕ”Ｑ付活剤として用いた珪酸マグネシウム・カルシウ
ム蛍光体の場合、中性雰囲気中の一倣一酸素（０２）及
び水蒸気ガス（ｎ、ｏ）によりＥｕ″の酸化が促進され
るため、微還元性雰囲気及び還元性雰囲気で焼成する必
要があるが、一方還元性岨２ン （
雰囲気中で焼成すると母体の珪酸マグネシウムが還元さ
れ母体が着色してくるためＥｕ”に還元した後の焼成は
中性雰囲気で行ない加湿ガスの流量および焼成時間の管
理を正確に行なう必要がある。It is preferable to use humidified gas for firing, preferably nitrogen gas (Nff
i) The firing temperature and time are carried out in a neutral atmosphere such as argon gas (Mr), or in a mildly reducing atmosphere such as a mixed gas of hydrogen gas (H8) and N gas. are respectively soo'c or 1250:C
And it is preferable to set it as 1 hour to 6 hours. Furthermore, E
In the case of the magnesium/calcium silicate phosphor used as the u''Q activator, the oxidation of Eu'' is promoted by monooxygen (02) and water vapor gas (n, o) in a neutral atmosphere, resulting in a slight It is necessary to fire in a reducing atmosphere, but on the other hand, firing in a reducing atmosphere reduces the base magnesium silicate and colors the base, so firing after reducing it to Eu" It is necessary to carry out the firing in a neutral atmosphere and to accurately control the flow rate of the humidifying gas and the firing time.
上述のようにして得られた本発明の蛍光体はＸ線、ｍ子
線１票外線、α線などの放射線による剌ａＩＩ［Ｔ：で
４ｊＱｍｍ付近にピークを有する青色発光を示し、その
発光波長分布と共にその発光の強度も従来のＺｎ８ ：
ムｇ蛍光体のそれとほぼ同様な発光を呈する。さらに電
流・輝度特性はＺｎ８ ：ムｇ蛍光体よりも優れており
、従来のＺｎ８ ：ムｇ蛍光体のγ値が０．９８６に対
し本発明の珪酸マグネシウム゛カルシウムのそれは０．
９６０−０．９８６である。また蛍光体ｌｉＩ造時の焼
成温度や焼成時間などの焼成条件を過当に調整すること
によって、従来のＺｎ８ ：ムｇ蛍光体が２０μム／ｃ
ｄの電流密度付近から急激な輝度飽和現象が認められる
のに対し５ｏＩＩム／ｃｄでも輝度飽和＃ｌ総が認めら
れない珪酸マグネシウム蛍光体が得られる。The phosphor of the present invention obtained as described above exhibits blue light emission having a peak around 4jQmm at a II [T:] due to radiation such as X-rays, m-rays, and α-rays, and its emission wavelength is As well as the distribution, the intensity of the emitted light is also different from that of conventional Zn8:
It exhibits almost the same luminescence as that of the Mug phosphor. Furthermore, the current and brightness characteristics are better than that of the Zn8:Mg phosphor, and the gamma value of the conventional Zn8:Mg phosphor is 0.986, whereas that of the magnesium/calcium silicate of the present invention is 0.986.
It is 960-0.986. Furthermore, by excessively adjusting the firing conditions such as firing temperature and firing time during the production of the phosphor liI, the conventional Zn8:mug phosphor was reduced to 20 μm/c.
A magnesium silicate phosphor is obtained in which a sharp brightness saturation phenomenon is observed from around the current density of d, but no brightness saturation #1 is observed even at a current density of 5oII/cd.
亀１図はＨ２ガス′＃曲気下、８００℃で焼成したのち
、Ｎ、ガス雰囲気下、 １２００℃で焼成して得られた
本発明（ｙ） （Ｏａ 、 Ｍｇ ） ８ｉＩＯ，：
Ｅｕ″＋蛍光体を電子縁（２！０ＫＶ）で刺激した時の
発光スペクトルを例示したもので、 ４５Ｑｒｏｍにピ
ークを有する青色発光を呈する。また第２図には同様な
方法により調整された（ Ｃａ 、Ｍｇ ）Ｓｉ ！０
． ： ０．０２Ｅｔ−蛍光体を電子線（鄭力で刺諏し
た時の電流・輝度特性をボした。Figure 1 shows the present invention (y) (Oa, Mg) 8iIO, which was obtained by firing at 800°C under H2 gas atmosphere and then at 1200°C under N gas atmosphere:
This is an example of the emission spectrum when the Eu''+ phosphor is stimulated with an electronic edge (2!0 KV), and it emits blue light with a peak at 45 Qrom. Ca, Mg)Si!0
．． : 0.02Et- The current and brightness characteristics when the phosphor was stimulated with an electron beam (Zheng force) were determined.
さらに、＾閾色性蛍光ランプ用として使用する時などそ
の使用目的によっては蛍光体製造時の焼成温度や焼成雰
囲気の還元度の度合いを調整することによって、付活剤
として添加したＥｕ″の一部を酸化させ、蛍光体母体結
晶中にＥｕ’とＥｕ３＋を混在させることにより４５９
ｍｍ付近と６１ Ｑｍｎ付近にピークを持った発光スペ
クトルを有す−る蛍光体を得ることも出来る。蛍光体焼
成時の雰囲気を中性雰囲気に保ち加湿ガス流量と焼成時
間を調整することによって４６０画にバンドスペクトル
のピークを有するＥｕ″に起因した青色発光とｇ ｌ
Ｑｎｍ付近に線状スペクトルのピークを有するＥｕ″に
起因した赤穂発光とを兼ね備えた発光を呈する蛍光体が
得られる。この場合の発光の強さは添加するＥｕ’の量
と、その酸化程度によって異なるが青色発光の強さを従
来用いられている蛍光体のそれよりも１０−８０％強く
すると同時に赤色発光の強さを通常のＹ！０． ： Ｅ
ｕ”＋蛍光体のそれと同程度にすることも可能である。Furthermore, depending on the purpose of use, such as when used as a threshold color fluorescent lamp, it is possible to reduce the amount of Eu'' added as an activator by adjusting the firing temperature and degree of reduction of the firing atmosphere during phosphor production. By oxidizing the part and mixing Eu' and Eu3+ in the phosphor host crystal,
It is also possible to obtain a phosphor having an emission spectrum with peaks near mm and near 61 Qmn. By keeping the atmosphere during firing of the phosphor neutral and adjusting the humidifying gas flow rate and firing time, blue light emission caused by Eu'' with a band spectrum peak at 460 pixels and gl
A phosphor that emits light that combines Ako luminescence caused by Eu' having a linear spectrum peak near Qnm can be obtained.The intensity of the light emission in this case depends on the amount of Eu' added and the degree of oxidation. Although different, the intensity of blue emission is made 10-80% stronger than that of conventionally used phosphors, and at the same time the intensity of red emission is increased to the normal Y!0.: E
It is also possible to make it comparable to that of u''+phosphor.
次に実施例により本発明を説明する。Next, the present invention will be explained with reference to examples.
実施例１
高純度（特級）の炭酸カルシウム（ＣａＣ０３） １１
５Ｆ塩基性炭酸ｖ り４ シラＡ （（ｂｉｇ（１）ｓ
）ａＭｇ （Ｑｔｉ）ｇ戦０）（Ａｓｓａｙ ａｓ Ｍ
ｇ０４１ｍ ）１２１Ｎ 、硫酸カルシウム（（４８０
，・２ＨｚＯ）ｔｓｙ、硫酸マグネシウム（Ｍｇ ８０
ｍ・７ｎｔｏ） ６．１６Ｎ。Example 1 High purity (special grade) calcium carbonate (CaC03) 11
5F basic carbonic acid v ri4 Shira A ((big(1)s
) aMg (Qti) g battle 0) (Assay as M
g041m)121N, calcium sulfate ((480
,・2HzO)tsy, magnesium sulfate (Mg 80
m・7nto) 6.16N.
塩化カルシウム（Ｃａ１ｌ、 ） Ｒ−’１６１ 、シ
リｔＪ （８ｔ ０！ ）１９．ｗを乳鉢にとり、これ
に付活剤として塩化Ｉに一ロピューム（ＥｕＣ１□）１
．４６Ｆを加えて、スラリー混合したのち乾燥する。塩
化第１ユーロピユームは塩化第２ユーロピューム（Ｅｕ
（３１ｍ）をＨ１ガス気流中で６００℃に２時間加熱し
て調製したものを用いた。Calcium chloride (Ca1l, ) R-'161, Siri tJ (8t 0!) 19. Take w in a mortar and add 1 lopium (EuC1□) to I chloride as an activator.
．． 46F is added and the slurry is mixed and then dried. Europium chloride (Eu) is equivalent to Europium chloride (Eu).
(31m) was prepared by heating it at 600° C. for 2 hours in a H1 gas stream.
次に乾燥して得られた原料を石英チューブに詰めて高温
電気炉に入れ、チューブ内に純粋なＮ２ガス腋たはＨ，
ガスを含有するＮ、ガスを流しなから８００°Ｃで２時
間焼成した後、引続いて１２０Ｇ’Ｏに電気炉の温度を
上げ、雰囲気なＮ、ガスに変えて２時間焼成する。その
後０石英チューブを炉外に出して冷却する。このように
して得られた（Ｃａ、Ｍｇ）”ｉｏａ ’ ０．０２Ｅ
ｕ２＋蛍光体はＸ線、電子線、紫外線尋で刺激すると、
鉛１図に示したように４５９ｍｍにピークを有する比較
的発光波長分布の狭い青色発光をボし、その発光波長分
布および発光４度は従来のＺｎ８ ： Ａｇ蛍光体より
やや低いが、１流・輝度特性は第２図に示す様にＺｎ８
：Ａｇ蛍光体と比べて優れでおり、γ特性はＺｎ８ ：
Ａｇ蛍光体が０．９８６ に対し１本研究で調製した
（ Ｃａ 、 Ｍｇ ） ８ ｉ、０６： Ｑ、０２Ｅ
ｕ″蛍光体は０．９８５であった
実施例２
実施例１と同様にしてユーロビュームの量を塩化第１ユ
ーロビユームとして４．８０ｆ加えたものを調製した。Next, the dried raw material is packed into a quartz tube and placed in a high-temperature electric furnace, and the tube is filled with pure N2 gas or H,
After firing at 800°C for 2 hours without flowing nitrogen containing gas, the temperature of the electric furnace was raised to 120 G'O, and firing was performed for 2 hours with the atmosphere changed to nitrogen and gas. Thereafter, the 0 quartz tube is taken out of the furnace and cooled. The thus obtained (Ca, Mg) ``ioa'' 0.02E
When U2+ phosphor is stimulated with X-rays, electron beams, or ultraviolet rays,
As shown in Figure 1, it emits blue light with a relatively narrow emission wavelength distribution that has a peak at 459 mm, and its emission wavelength distribution and emission 4 degrees are slightly lower than the conventional Zn8:Ag phosphor, but it is first class. The brightness characteristics of Zn8 are as shown in Figure 2.
:It is superior to Ag phosphor, and its γ characteristics are better than Zn8:
(Ca, Mg) 8 i, 06: Q, 02E prepared in this study for 0.986 Ag phosphors
u'' phosphor was 0.985 Example 2 A phosphor was prepared in the same manner as in Example 1, with the addition of 4.80 f of eurobium chloride.
この場合の輝度は従来のＺｎ８：Ａｇ蛍光体とほぼ同様
であり、［流・輝度特性はやや悪くγ特性は０９６３で
あった。The brightness in this case was almost the same as that of the conventional Zn8:Ag phosphor, and the current and brightness characteristics were somewhat poor and the γ characteristic was 0963.
実施例８
実施例１と同様にして得られた蛍光体原料を石英チュー
ブ内でｓｏｏ’ｃに２時向、純粋な■２ガスまたはＮ２
ガスを含有するＮ２ガスを流しながら焼成し。Example 8 A phosphor raw material obtained in the same manner as in Example 1 was placed soo'c in a quartz tube for 2 hours and exposed to pure ■2 gas or N2.
Firing while flowing N2 gas containing gas.
１２００℃ に電気炉温度を上げたのち焼成雰囲気をベ
ガスとし、１時間焼成後、空気に切換え１５分間焼成す
る。その後１石英チューブを炉外に出して冷却する。こ
のようにして製造された蛍光体はＸ線、電子線、紫外線
などによる刺激によって第８図に示すように４５９ｍｍ
に帯状スペクトルのピークを有し、かつ（ｉｌＱｍｎ付
近に線状スペクトルのピークを有する紫白色の発行を示
した。After raising the electric furnace temperature to 1200°C, the firing atmosphere was changed to Vegas, and after firing for 1 hour, the atmosphere was changed to air and fired for 15 minutes. After that, one quartz tube is taken out of the furnace and cooled. The phosphor produced in this way is stimulated by X-rays, electron beams, ultraviolet rays, etc. to a diameter of 459 mm as shown in Figure 8.
It exhibited a purple-white color having a band-like spectrum peak at (ilQmn) and a linear spectrum peak near (ilQmn).
第８図は上述のような方法で調製された（Ｃａ、Ｍｇ
）８ｉ２０． ： Ｅｕ蛍光体（７）ｆｌｉｔ子線（＊
ｏＫＶ） テ刺激した時の発光スペクトルを例示したも
のである。Figure 8 was prepared as described above (Ca, Mg
)8i20. : Eu phosphor (7) flit particle (*
oKV) This is an example of the emission spectrum when stimulated.
以上述べたように本発明のＥｕ２＋付活珪酸マグネシウ
ム力ルシウム蛍光体はＸ線、電子線、′＃：外線などの
刺鐵下で従来のＺｎ８ ：Ａｇ蛍光体と同Ｎｕｔのｊｉ
Ｉ１１度と発光波長分布を示し、Ｚｎ８：Ａｇ蛍光体よ
りも優れた電流・４度特性を示すため、陰＆縁管用の青
色蛍光体として利用でき、また一方、その峡造条件を適
当に選択することによって蛍光灯用蛍光体としても利用
され、その工業的利用価値は大きい。As described above, the Eu2+ activated magnesium silicate lucium phosphor of the present invention has the same Nut ji as the conventional Zn8:Ag phosphor under the stimulation of X-rays, electron beams, external beams, etc.
It exhibits an emission wavelength distribution of I11 degrees and exhibits better current and 4 degree characteristics than Zn8:Ag phosphors, so it can be used as a blue phosphor for shadow and limbal tubes, and on the other hand, it can be used as a blue phosphor for shadow and marginal tubes. By doing so, it can also be used as a phosphor for fluorescent lamps, and its industrial utility value is great.
第１図・第８図は本発明の蛍光体の発光スペクトラムを
示す図、第２図は本発明の蛍光体の電流・＃４度特性を
示す図である。
代理人 葛野信−（外１名）
第１図
ＩＪＯＯ５００６θ０
ＷＡＶＥＬＥＮＧＴＨＩｎｒｎ）
第２図
＋０００
２０−Ｋｖ ＣＲ
００
００
ＺｎＳ：Ａｇ 。
ｔｏｏ （ｙ ＝０．９３６）（ｃａｙ
ｃｐ）ｓｒ２ｏ６：Ｅｕ”
○ （ｒ＝０．９８５）
、−５０
二
梠
ソ
鼠２０
臣
０コ
０
第３図
ＷＡＶＥＬＥＮＧＴＨＩｎｍ）
Ｃｔ）ＲＲＥＮＴ ＤＥＮＳＩＴＹ （μＡ／Ｃｒｎ２
）第１頁の続き
■出 願 人 山崎喜久男
豊橋市西高師町字奥谷４６番２号
芦原ハイッ１０３FIG. 1 and FIG. 8 are diagrams showing the emission spectrum of the phosphor of the present invention, and FIG. 2 is a diagram showing the current/#4 degree characteristics of the phosphor of the present invention. Agent Shin Kuzuno (1 other person) Fig. 1 IJOO5006θ0 WAVELENGTHInrn) Fig. 2 +000 20-Kv CR 00 00 ZnS:Ag. too (y = 0.936) (cay
cp) sr2o6:Eu” ○ (r=0.985)
,-50
)Continued from page 1 ■Applicant Kikuo Yamazaki 103 Ashihara High, 46-2 Okutani, Nishitakashicho, Toyohashi City
Claims (1)
―たす数である。） で表わされる２価のユーロビュームで付活した珪酸マグ
ネシウムカルシウム蛍光体。[Claims] Magnesium calcium silicate activated with divalent eurobium expressed by the composition formula % (where X is a number that satisfies the following condition: 1G''≦X≦8X10) phosphor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5401582A JPS58168683A (en) | 1982-03-30 | 1982-03-30 | Magnesium calcium silicate fluorescent material activated with bivalent europiun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5401582A JPS58168683A (en) | 1982-03-30 | 1982-03-30 | Magnesium calcium silicate fluorescent material activated with bivalent europiun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58168683A true JPS58168683A (en) | 1983-10-05 |
Family
ID=12958754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5401582A Pending JPS58168683A (en) | 1982-03-30 | 1982-03-30 | Magnesium calcium silicate fluorescent material activated with bivalent europiun |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58168683A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093346A (en) * | 1997-03-26 | 2000-07-25 | Xiao; Zhiguo | Long afterglow silicate luminescent material and its manufacturing method |
| JP2002285147A (en) * | 2001-03-22 | 2002-10-03 | Nec Lighting Ltd | Fluorescent substance and lamp using the same |
| WO2003036675A1 (en) * | 2001-10-23 | 2003-05-01 | Matsushita Electric Industrial Co., Ltd. | Plasma display device |
| WO2007029369A1 (en) * | 2005-09-06 | 2007-03-15 | Niigata University | Fluorescent substance for light emitting diode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437391A (en) * | 1977-08-30 | 1979-03-19 | Toshiba Corp | Fluorescent lamp |
| JPS5611392A (en) * | 1979-07-11 | 1981-02-04 | Fuji Photo Film Co Ltd | Method and device for converting radiation image |
| JPS5612599A (en) * | 1979-07-11 | 1981-02-06 | Fuji Photo Film Co Ltd | Method and device for converting radiation image |
| JPS56136875A (en) * | 1980-03-31 | 1981-10-26 | Kasei Optonix Co Ltd | Highly color rendering fluorescent lamp |
-
1982
- 1982-03-30 JP JP5401582A patent/JPS58168683A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437391A (en) * | 1977-08-30 | 1979-03-19 | Toshiba Corp | Fluorescent lamp |
| JPS5611392A (en) * | 1979-07-11 | 1981-02-04 | Fuji Photo Film Co Ltd | Method and device for converting radiation image |
| JPS5612599A (en) * | 1979-07-11 | 1981-02-06 | Fuji Photo Film Co Ltd | Method and device for converting radiation image |
| JPS56136875A (en) * | 1980-03-31 | 1981-10-26 | Kasei Optonix Co Ltd | Highly color rendering fluorescent lamp |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093346A (en) * | 1997-03-26 | 2000-07-25 | Xiao; Zhiguo | Long afterglow silicate luminescent material and its manufacturing method |
| JP2002285147A (en) * | 2001-03-22 | 2002-10-03 | Nec Lighting Ltd | Fluorescent substance and lamp using the same |
| EP1253181A2 (en) * | 2001-03-22 | 2002-10-30 | Nec Corporation | Phosphors and fluorescent lamps comprising the phosphors |
| EP1253181A3 (en) * | 2001-03-22 | 2004-04-07 | Nec Corporation | Phosphors and fluorescent lamps comprising the phosphors |
| WO2003036675A1 (en) * | 2001-10-23 | 2003-05-01 | Matsushita Electric Industrial Co., Ltd. | Plasma display device |
| EP1353354A1 (en) * | 2001-10-23 | 2003-10-15 | Matsushita Electric Industrial Co., Ltd. | Plasma display device |
| US6939480B2 (en) | 2001-10-23 | 2005-09-06 | Matsushita Electric Industrial Co., Ltd. | Plasma display device |
| EP1353354A4 (en) * | 2001-10-23 | 2007-12-12 | Matsushita Electric Ind Co Ltd | Plasma display device |
| WO2007029369A1 (en) * | 2005-09-06 | 2007-03-15 | Niigata University | Fluorescent substance for light emitting diode |
| JPWO2007029369A1 (en) * | 2005-09-06 | 2009-03-12 | 国立大学法人 新潟大学 | Phosphor for light emitting diode |
| US7662311B2 (en) | 2005-09-06 | 2010-02-16 | Niigata University | Fluorescent substance for light-emitting diode |
| JP4528983B2 (en) * | 2005-09-06 | 2010-08-25 | 国立大学法人 新潟大学 | Phosphor for light emitting diode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4561194B2 (en) | Alkaline earth aluminate phosphor for cold cathode fluorescent lamp and cold cathode fluorescent lamp | |
| JPS61174291A (en) | Phosphor emitting blue light | |
| JPS58168683A (en) | Magnesium calcium silicate fluorescent material activated with bivalent europiun | |
| JP2843648B2 (en) | Blue light emitting phosphor | |
| JPS6121581B2 (en) | ||
| JP2007254638A (en) | Europium and manganese-coactivated aluminate fluorophor, method for producing europium and manganese-coactivated aluminate fluorophor, and fluorescent lamp | |
| JP2008308634A (en) | Manganese-activated rare earth aluminate phosphor and fluorescent lamp using the same | |
| JP3956434B2 (en) | Aluminate phosphor | |
| JP2003234089A (en) | Cold cathode discharge tube and unit for lighting the same | |
| JP2703308B2 (en) | Blue-emitting lanthanum-gadolinium-oxybromide, a fluorescent screen provided with the oxybromide, and a cathode ray tube provided with the screen | |
| JP2004244604A (en) | Fluorescent substance and fluorescent lamp | |
| JP3402028B2 (en) | Cold cathode discharge tube and its lighting device | |
| JPS6047583A (en) | Color projection type video device | |
| JPH0629421B2 (en) | Blue light emitting phosphor and blue light emitting cathode ray tube for color projection type image device using the same | |
| JPH0823011B2 (en) | Yttrium vanadate phosphor and method for producing the same | |
| KR910009221B1 (en) | Fluorescent substance | |
| JPH02228390A (en) | Highly color rendering fluorescent lamp | |
| JPS628470B2 (en) | ||
| JPH09291280A (en) | Fluorescent substance and fluorescent lamp | |
| JPH0412315B2 (en) | ||
| JPS607676B2 (en) | fluorescent material | |
| JPS5821477A (en) | Fluorescent material | |
| JPS60170686A (en) | Blue emitting braun tube for color display unit of projection type | |
| JPH0953069A (en) | Red emitting phosphor and fluorescent lamp made by using it | |
| JPH0252382B2 (en) |