JPH0559357A - Fluorescent substance having surface treated with boron nitride - Google Patents
Fluorescent substance having surface treated with boron nitrideInfo
- Publication number
- JPH0559357A JPH0559357A JP25304591A JP25304591A JPH0559357A JP H0559357 A JPH0559357 A JP H0559357A JP 25304591 A JP25304591 A JP 25304591A JP 25304591 A JP25304591 A JP 25304591A JP H0559357 A JPH0559357 A JP H0559357A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- boron nitride
- fluorescent substance
- color
- stripe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Luminescent Compositions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は表面処理された蛍光体
の改良に関し、とくに、カラー陰極線管の塗布特性に優
れた蛍光体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in surface-treated phosphors, and more particularly to phosphors having excellent coating characteristics for color cathode ray tubes.
【０００２】[0002]
【従来の技術】蛍光体は、表面処理することによって塗
布特性を向上できる。とくに近年のカラーブラウン管
は、高品質の蛍光膜を得るために、高い解像度が要求さ
れる。このため、三原色のパターンは非常に微細なドッ
トやストライプとなっている。蛍光体を微細な領域に緻
密にしかも均一に塗布し、さらに、ガラス面との接着力
を強くし、さらに、三原色を重ねて塗布するときの混色
や残渣を防止するために、種々の表面処理が行われてい
る。2. Description of the Related Art Coating properties of a phosphor can be improved by surface treatment. Particularly in recent years, color cathode ray tubes require high resolution in order to obtain a high quality fluorescent film. Therefore, the three primary color patterns are very fine dots and stripes. Various surface treatments are applied in order to apply the phosphor precisely and evenly to a fine area, to strengthen the adhesion to the glass surface, and to prevent color mixture and residue when applying the three primary colors in layers. Is being done.
【０００３】スラリー法で塗布された蛍光膜の品質は、
スラリー中における蛍光体の分散性に影響を受ける。蛍
光体のスラリー中における分散性は、スラリー液をボー
ルミルすることによって改善できる。しかしながら、ボ
ールミルによる方法は、蛍光体粒子を破壊して発光特性
を低下させる欠点がある。The quality of the fluorescent film applied by the slurry method is
It is affected by the dispersibility of the phosphor in the slurry. The dispersibility of the phosphor in the slurry can be improved by ball-milling the slurry liquid. However, the ball mill method has a drawback in that the phosphor particles are destroyed and the light emission characteristics are deteriorated.
【０００４】蛍光体粒子の表面に、無機物をコーティン
グして分散性を改善することも可能である。無機物の表
面処理物質として、ＳｉＯ2またはリン酸化合物が使用
される。例えば表面処理物質にＳｉＯ2を含む蛍光体
は、蛍光体懸濁液に、シリケート化合物を添加し、これ
に、Ｚｎ、Ａｌ、Ｍｇ、Ｂａ、Ｃａ等の水溶液を添加し
て、ケイ酸化合物を生成して製造される。It is also possible to coat the surface of the phosphor particles with an inorganic substance to improve the dispersibility. SiO 2 or a phosphoric acid compound is used as the inorganic surface treatment material. For example, for a phosphor containing SiO 2 as a surface treatment substance, a silicate compound is added to a phosphor suspension, and an aqueous solution of Zn, Al, Mg, Ba, Ca or the like is added to the phosphor suspension to add a silicic acid compound. Produced and manufactured.
【０００５】特公昭５０−１５７４７号公報には、蛍光
体の水懸濁液に、カリ水ガラスと硫酸亜鉛とを添加して
蛍光体を表面処理する方法が開示されている。また、特
公昭６１−４６５１２号公報には、蛍光体にシリカと、
亜鉛化合物及びアルミニウム化合物を付着した蛍光体が
開示されている。Japanese Patent Publication No. 50-15747 discloses a method of surface-treating a phosphor by adding potassium water glass and zinc sulfate to an aqueous suspension of the phosphor. Further, JP-B-61-46512 discloses that phosphor is silica.
A phosphor having a zinc compound and an aluminum compound attached is disclosed.
【０００６】さらに、ケイ酸化合物に代わって、四ホウ
酸ナトリウムまたは四ホウ酸カリウムと、硫酸亜鉛また
は硫酸アルミニウムの反応生成物を表面にコーティング
した蛍光体も開発されている（特公昭６０−４２２７２
号公報）。この公報には下記の工程で表面処理した蛍光
体が記載されている。Further, a phosphor having a surface coated with a reaction product of sodium tetraborate or potassium tetraborate and zinc sulfate or aluminum sulfate instead of the silicic acid compound has been developed (Japanese Patent Publication No. 60-42272).
Publication). This publication describes a phosphor that has been surface-treated in the following steps.
【０００７】 蛍光体懸濁液に、水溶性ホウ酸塩を添
加して攪伴する。ホウ酸塩には、四ホウ酸ナトリウム、
四ホウ酸カリウムを使用する。A water-soluble borate is added to the phosphor suspension and stirred. Borate includes sodium tetraborate,
Use potassium tetraborate.
【０００８】 さらに、硫酸亜鉛、硝酸アルミニウム
等の水溶性金属塩化合物を添加し、これ等の反応によっ
て生ずるホウ酸化合物、すなわち、ホウ酸亜鉛、ホウ酸
アルミニウムを蛍光体に表面付着する。Further, a water-soluble metal salt compound such as zinc sulfate or aluminum nitrate is added, and a boric acid compound generated by the reaction of these, that is, zinc borate or aluminum borate is attached to the surface of the phosphor.
【０００９】 その後、蛍光体をろ過し、純水洗浄し
て乾燥し、ふるいに掛けて表面処理された蛍光体とす
る。After that, the phosphor is filtered, washed with pure water, dried, and sieved to obtain a surface-treated phosphor.
【００１０】[0010]
【発明が解決しようとする課題】この方法で製造された
蛍光体は、従来品に比較して優れた分散特性を示す。し
かしながら、この蛍光体は、混色と残渣の特性が充分で
なく、さらに改良された蛍光体が要求されている。混色
や残渣は、カラーブラウン管の発光色純度を低下させる
ばかりでなく、画面の白色均一度の点でも画質を低下さ
せる。カラーブラウン管は、緑、青、赤、あるいは、
青、緑、赤の順番でストライプ状のパターンを形成する
ので、前後に塗布したストライプの蛍光体が別の色のス
トライプに塗布されて、混色や残渣が発生する。残渣と
は、先に塗布した蛍光体粒子が、後に塗布されるストラ
イプ位置に残ることであり、混色とは、先に塗布した蛍
光体のストライプ上に後から塗布する蛍光体粒子が残る
ことである。The phosphor produced by this method exhibits excellent dispersion characteristics as compared with conventional products. However, this phosphor does not have sufficient characteristics of color mixture and residue, and further improved phosphor is required. Color mixing and residues not only reduce the emission color purity of the color CRT, but also deteriorate the image quality in terms of the whiteness uniformity of the screen. Color cathode ray tubes can be green, blue, red, or
Since the stripe-shaped pattern is formed in the order of blue, green, and red, the phosphors of the stripes applied before and after are applied to stripes of different colors to cause color mixing and residue. Residue means that the phosphor particles applied earlier remain at the stripe positions to be applied later, and color mixing means that the phosphor particles applied later on the stripes of the phosphor applied earlier remain. is there.
【００１１】この発明は、さらに蛍光体の塗布特性を改
善することを目的に開発されたもので、この発明の重要
な目的は、混色と残渣とをさらに向上できる窒化ホウ素
で表面処理された蛍光体を提供するにある。The present invention was developed with the object of further improving the coating properties of the phosphor, and an important object of the present invention is to improve the color mixture and the residue by improving the surface-treated phosphor with boron nitride. To provide the body.
【００１２】[0012]
【課題を解決するための手段】この発明の蛍光体は、前
述の目的を達成するために、蛍光粒子の表面に窒化ホウ
素を付着して表面処理している。窒化ホウ素には、平均
粒径が０．０１〜１μｍのものが使用され、その付着量
は、重量比で０．０１〜２％の範囲に調整される。In order to achieve the above-mentioned object, the phosphor of the present invention is surface-treated by adhering boron nitride to the surface of the phosphor particle. Boron nitride having an average particle size of 0.01 to 1 μm is used, and the amount of the adhered boron nitride is adjusted to a range of 0.01 to 2% by weight.
【００１３】窒化ホウ素は、六方晶系の化学的に安定な
結晶で、粉末は鱗片状結晶構造を有し、潤滑、離型剤用
のものが使用できる。さらに、使用される窒化ホウ素
は、その純度が９０％以上、好ましくは９４％以上、さ
らに好ましくは９９％以上のものが使用される。Boron nitride is a hexagonal system chemically stable crystal, and the powder has a scaly crystal structure, and those for lubricants and release agents can be used. Further, the boron nitride used has a purity of 90% or more, preferably 94% or more, more preferably 99% or more.
【００１４】窒化ホウ素の平均粒径を前述の範囲に調整
するのは、大きすぎても小さすぎても充分な効果が期待
できず、また、大きすぎると付着重量が多くなり、これ
が電子線のエネルギーを吸収して蛍光体の発光効率を低
下させるからである。If the average particle size of boron nitride is adjusted to the above range, no sufficient effect can be expected if it is too large or too small, and if it is too large, the adhesion weight increases and this is due to the electron beam. This is because it absorbs energy and reduces the luminous efficiency of the phosphor.
【００１５】また、窒化ホウ素の付着量も、少ないと充
分な効果が期待できず、反対に多すぎると発光効率が低
下するので、塗布特性と発光効率とを考慮して前述の範
囲に調整される。Further, if the amount of the deposited boron nitride is too small, a sufficient effect cannot be expected, and conversely, if it is too large, the luminous efficiency is lowered. Therefore, the coating range and the luminous efficiency are taken into consideration to adjust the above range. It
【００１６】窒化ホウ素を蛍光体粒子の表面に接着する
バインダーには、例えば、アクリル系、ウレタン系、尿
素系の有機バインダーを使用することができる。これ等
の有機バインダーは蛍光膜をベーキングするときに消失
される。また、有機バインダーに代わって無機バインダ
ーも使用することができる。As the binder for adhering the boron nitride to the surface of the phosphor particles, for example, an acrylic, urethane or urea organic binder can be used. These organic binders are lost when baking the fluorescent film. Further, an inorganic binder can be used instead of the organic binder.
【００１７】さらに、この発明の蛍光体は、表面に窒化
ホウ素を単独で付着することもできるが、珪酸化合物、
リン酸化合物等の従来の表面処理物質と一緒に付着する
ことも可能である。Further, in the phosphor of the present invention, boron nitride alone can be attached to the surface, but a silicate compound,
It is also possible to deposit with conventional surface treatment substances such as phosphate compounds.
【００１８】[0018]
【実施例】以下、この発明の実施例を図面に基づいて説
明する。但し、以下に示す実施例は、この発明の技術思
想を具体化する為の装置を例示するものであって、この
発明の装置は、構成部品の材質、形状、構造、配置を下
記の構造に特定するものでない。この発明の装置は、特
許請求の範囲に於て、種々の変更を加えることができ
る。Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify a device for embodying the technical idea of the present invention, and the device of the present invention has the following materials, shapes, structures, and arrangements of components. Not specific. The device of the present invention can be modified in various ways within the scope of the claims.
【００１９】更に、この明細書は、特許請求の範囲を理
解し易いように、実施例に示される部材に対応する番号
を、「特許請求の範囲」、および「課題を解決する為の
手段の欄」に示される部材に付記している。ただ、特許
請求の範囲に示される部材を、実施例の部材に特定する
ものでは決してない。Further, in this specification, for easier understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "claims" and "means for solving the problems." It is added to the members shown in "Column". However, the members shown in the claims are not limited to the members of the embodiment.
【００２０】［実施例１］下記の工程で表面処理された
蛍光体を製造する。 平均粒径が７μｍである緑色発光蛍光体（ＺｎＳ：
Ｃｕ、Ａｌ）１０００ｇを、イオン交換水（以下水と記
載する）２．５リットルに懸濁させて蛍光体懸濁液とす
る。 蛍光体懸濁液を攪伴しながら、純度９６重量％以上
で、平均粒径が０．２μｍである窒化ホウ素を２ｇと、
アクリル凝集剤としてアロンフロック（東亜合成製）１
ｇとを添加する。 その後、攪伴を止めて静置し、蛍光体を沈降させ
る。 蛍光体が十分沈降するのを待って上澄を捨て、再び
水を加えて、攪伴、静置して蛍光体を沈降させる。この
操作を３回繰り返し蛍光体を水洗した後、濾紙を敷いた
ヌッチェで吸引ろ過して蛍光体を分離した。 蛍光体を取り出し、１００℃で３時間乾燥する。 その後乾燥した蛍光体を、３８０メッシュの篩にか
けて、本発明の蛍光体を得た。 得られた蛍光体は、蛍光体母体に対して、表面処理物質
としておよそ０．２重量％の窒化ホウ素が付着されてい
た。Example 1 A surface-treated phosphor is manufactured by the following steps. Green light-emitting phosphor (ZnS: having an average particle size of 7 μm)
Cu, Al) 1000 g is suspended in 2.5 liters of ion-exchanged water (hereinafter referred to as water) to obtain a phosphor suspension. 2 g of boron nitride having a purity of 96% by weight or more and an average particle diameter of 0.2 μm while stirring the phosphor suspension.
Aron floc (made by Toagosei) as acrylic coagulant 1
and g are added. After that, the stirring is stopped and the mixture is allowed to stand to precipitate the phosphor. The supernatant is discarded after waiting for the fluorescent substance to settle sufficiently, water is added again, and the fluorescent substance is allowed to settle by stirring and standing still. This operation was repeated 3 times to wash the phosphor with water, and then suction filtration was performed using a Nutsche covered with filter paper to separate the phosphor. The phosphor is taken out and dried at 100 ° C. for 3 hours. Then, the dried phosphor was passed through a 380 mesh sieve to obtain the phosphor of the present invention. In the obtained phosphor, about 0.2% by weight of boron nitride was attached as a surface treatment substance to the phosphor base.
【００２１】この蛍光体を、重クロム酸アンモニウムと
ＰＶＡ、および界面活性剤とを含む感光性樹脂溶液中に
分散させ、フェースプレートに塗布した後、ストライプ
状のマスクをかけて、露光、現像して蛍光膜とし、残渣
を測定した。残渣は、ストライプ状に塗布した蛍光膜の
近傍１ｍｍ2の領域に付着した蛍光体粒子の数を顕微鏡
で計測し、５箇所の平均値とした。This phosphor was dispersed in a photosensitive resin solution containing ammonium dichromate, PVA, and a surfactant, applied on a face plate, and then exposed and developed by applying a stripe mask. A fluorescent film was used to measure the residue. For the residue, the number of phosphor particles adhering to a region of 1 mm 2 in the vicinity of the fluorescent film applied in a stripe shape was measured with a microscope, and the average value was obtained at 5 points.
【００２２】その結果、この実施例で得られた蛍光体
は、蛍光体粒子の表面にＳｉＯ2（重量比で蛍光体に対
して０．２％）を付着して表面処理した従来の緑色発光
蛍光体に比較して残渣がおよそ１／５となった。As a result, the phosphor obtained in this example has a conventional green light emission in which SiO 2 (0.2% by weight based on the weight of the phosphor) is adhered to the surface of the phosphor particles for surface treatment. The residue was about 1/5 of that of the phosphor.
【００２３】［実施例２］蛍光体を、平均粒径が７．２
μｍである青色発光蛍光体（ＺｎＳ：Ａｇ、Ａｌ）と
し、窒化ホウ素の添加量を１．２ｇとし、さらに、アク
リル凝集剤の添加量を１．２ｇとする以外、実施例１と
同様にして本発明の蛍光体を得た。Example 2 The phosphor has an average particle size of 7.2.
A blue light emitting phosphor (ZnS: Ag, Al) having a thickness of μm, a boron nitride addition amount of 1.2 g, and an acrylic coagulant addition amount of 1.2 g were obtained in the same manner as in Example 1. The phosphor of the present invention was obtained.
【００２４】この実施例１と実施例２とで得られた蛍光
体を使用して、緑、青の順番でストライプ状の蛍光面パ
ターンを形成し、混色と残渣とを測定した。比較に使用
した従来の蛍光体は、実施例１において比較に使用した
緑色発光蛍光体と、蛍光体粒子表面に０．２重量％のＳ
ｉＯ2を付着した青色発光蛍光体を使用した。なお混色
は、蛍光膜を紫外線で発光させ、緑のストライプ１ｍｍ
2上に乗っている青色発光蛍光体の数を、同じく顕微鏡
で観察、計測し、５箇所の平均値とした。Using the phosphors obtained in Examples 1 and 2, stripe-shaped phosphor screen patterns were formed in the order of green and blue, and the color mixture and the residue were measured. The conventional phosphors used for comparison are the green light emitting phosphor used for comparison in Example 1 and 0.2% by weight of S on the surface of phosphor particles.
A blue emitting phosphor with iO 2 attached was used. In addition, the color mixing is done by making the fluorescent film emit ultraviolet light, and the green stripe is 1 mm.
The number of the blue light emitting phosphors on the upper part of 2 was also observed and measured with a microscope, and the average value at 5 points was taken.
【００２５】測定の結果、本発明の蛍光体を使用した蛍
光面パターンは、混色および残渣が従来のものよりおよ
そ１／５以下に減少した。As a result of the measurement, in the phosphor screen pattern using the phosphor of the present invention, the color mixture and the residue were reduced to about 1/5 or less of the conventional one.
【００２６】［実施例３］蛍光体を平均粒径が７．５μ
ｍである赤色発光蛍光体（Ｙ2Ｏ2Ｓ：Ｅｕ）とし、窒化
ホウ素の添加量を３ｇとし、さらに、バインダーとして
尿素樹脂であるユーロイド（三井東圧製）を１．５ｇ添
加する以外、実施例１と同様にして本発明の蛍光体を得
た。[Embodiment 3] The average particle diameter of the phosphor is 7.5 μ.
m red emission phosphor (Y 2 O 2 S: Eu), the addition amount of boron nitride is 3 g, and the addition of 1.5 g of urea resin euroid (manufactured by Mitsui Toatsu) as a binder. A phosphor of the present invention was obtained in the same manner as in Example 1.
【００２７】これら実施例１〜３で得られた本発明の蛍
光体を使用して、緑、青、赤の順番でストライプ状の蛍
光面パターンを形成し、同様に混色および残渣を測定し
た。比較に使用した従来の赤色発光蛍光体は、その粒子
表面に０．３重量％のＳｉＯ2を付着したものを使用し
た。Using the phosphors of the present invention obtained in Examples 1 to 3, stripe-shaped phosphor screen patterns were formed in the order of green, blue, and red, and color mixture and residue were measured in the same manner. The conventional red light-emitting phosphor used for comparison had a particle surface on which 0.3% by weight of SiO 2 was attached.
【００２８】測定の結果、本発明の蛍光体で形成した蛍
光面パターンは、赤色発光蛍光体粒子が青色発光蛍光体
ストライプに混色する数が、従来に比して同じく１／５
以下に減少し、また赤色発光蛍光体がストライプ以外の
フェースプレート上に残る残渣もおよそ１／５以下に減
少した。As a result of the measurement, in the phosphor screen pattern formed of the phosphor of the present invention, the number of red light-emitting phosphor particles mixed in the blue light-emitting phosphor stripe is 1/5 that of the conventional one.
The amount of the red light emitting phosphor remaining on the face plate other than the stripe was also reduced to about 1/5 or less.
【００２９】[0029]
【発明の効果】この発明の蛍光体がいかに優れた塗布特
性を示すかを、図１ないし図４に示している。図１は緑
色発光蛍光体の表面に付着する窒化ホウ素の量に対す
る、蛍光体粒子の残渣の数を表している。但しこの表
は、緑色発光蛍光体をストライプ状のパターンに塗布
し、その近傍１ｍｍ2の領域に残渣として付着した蛍光
体粒子の数を表している。この表から明かなように、こ
の発明の蛍光体は残渣の数が従来品に比して極めて少な
く、およそ１／２以下に減少した。1 to 4 show how the phosphors of the present invention exhibit excellent coating characteristics. FIG. 1 shows the number of phosphor particle residues with respect to the amount of boron nitride adhering to the surface of the green light emitting phosphor. However, this table shows the number of phosphor particles applied as a residue in the area of 1 mm 2 in the vicinity of the green light-emitting phosphor coated in a stripe pattern. As is clear from this table, the number of residues in the phosphor of the present invention is extremely smaller than that of the conventional product, which is reduced to about 1/2 or less.
【００３０】図２は先に形成したストライプ状の緑色パ
ターンに、後から塗布した青色発光蛍光体粒子が、混色
となって１ｍｍ2の領域に付着した数を示している。こ
の図に示すように、この発明の蛍光体は、混色も従来品
に比べて極めて少なく、同じく１／２以下に減少した。FIG. 2 shows the number of the blue light emitting phosphor particles applied later on the stripe-shaped green pattern formed previously as a mixed color and adhered to the area of 1 mm 2 . As shown in this figure, the phosphor of the present invention had very little color mixture as compared with the conventional product, and also decreased to 1/2 or less.
【００３１】図３は、ストライプ状に形成した青色パタ
ーンに赤色発光蛍光体が混色する数、図４もストライプ
状に形成した緑色パターンに赤色発光蛍光体が混色する
数を示している。この図も先の図と同じく本発明による
蛍光体は、混色を極めて少なくすることができる。FIG. 3 shows the number of red-emitting phosphors mixed in the stripe-shaped blue pattern, and FIG. 4 also shows the number of red-emitting phosphors mixed in the stripe-formed green pattern. Also in this figure, as in the previous figure, the phosphor according to the present invention can extremely reduce color mixing.
【図１】窒化ホウ素の付着量に対する緑色発光蛍光体の
残渣粒子の数を示す図FIG. 1 is a diagram showing the number of residual particles of a green-emitting phosphor with respect to the amount of boron nitride deposited.
【図２】窒化ホウ素の付着量に対する青色発光蛍光体の
緑色パターンへの混色粒子の数を示す図FIG. 2 is a graph showing the number of color-mixed particles in a green pattern of a blue-emitting phosphor with respect to the amount of boron nitride deposited.
【図３】窒化ホウ素の付着量に対する赤色発光蛍光体の
青色パターンへの混色粒子の数を示す図FIG. 3 is a diagram showing the number of color-mixed particles in a blue pattern of a red-emitting phosphor with respect to the amount of boron nitride deposited.
【図４】窒化ホウ素の付着量に対する赤色発光蛍光体の
緑色パターンへの混色粒子の数を示す図FIG. 4 is a diagram showing the number of color-mixed particles in a green pattern of a red-emitting phosphor with respect to the amount of boron nitride deposited.
Claims (1)
μｍの窒化ホウ素を、重量比で０．０１〜２％付着して
表面処理したことを特徴とする窒化ホウ素で表面処理さ
れた蛍光体。1. An average particle size of 0.01 to 1 on the surface of the particles.
A phosphor, which is surface-treated with boron nitride, characterized in that 0.01 to 2% by weight of boron nitride is attached and surface-treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25304591A JPH0559357A (en) | 1991-09-03 | 1991-09-03 | Fluorescent substance having surface treated with boron nitride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25304591A JPH0559357A (en) | 1991-09-03 | 1991-09-03 | Fluorescent substance having surface treated with boron nitride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0559357A true JPH0559357A (en) | 1993-03-09 |
Family
ID=17245718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25304591A Pending JPH0559357A (en) | 1991-09-03 | 1991-09-03 | Fluorescent substance having surface treated with boron nitride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0559357A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302342A (en) * | 1995-05-09 | 1996-11-19 | Futaba Corp | Phosphor |
| EP0928826A1 (en) * | 1998-01-12 | 1999-07-14 | Osram Sylvania Inc. | Moisture insensitive electroluminescent phosphor |
| JP2009249525A (en) * | 2008-04-08 | 2009-10-29 | Sony Corp | Phosphor particle and flat-panel type display device |
| CN102660265A (en) * | 2012-05-04 | 2012-09-12 | 苏州大学 | Eu2+ activated borate yellow fluorescent powder and preparing method thereof |
-
1991
- 1991-09-03 JP JP25304591A patent/JPH0559357A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302342A (en) * | 1995-05-09 | 1996-11-19 | Futaba Corp | Phosphor |
| EP0928826A1 (en) * | 1998-01-12 | 1999-07-14 | Osram Sylvania Inc. | Moisture insensitive electroluminescent phosphor |
| US6064150A (en) * | 1998-01-12 | 2000-05-16 | Osram Sylvania Inc. | Nitride coated particle and composition of matter comprised of such particles |
| US6456002B1 (en) | 1998-01-12 | 2002-09-24 | Osram Sylvania Inc. | Moisture insensitive electroluminescent phosphor |
| JP2009249525A (en) * | 2008-04-08 | 2009-10-29 | Sony Corp | Phosphor particle and flat-panel type display device |
| CN102660265A (en) * | 2012-05-04 | 2012-09-12 | 苏州大学 | Eu2+ activated borate yellow fluorescent powder and preparing method thereof |
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