KR100268716B1 - A blue mixed phosphor - Google Patents

A blue mixed phosphor Download PDF

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KR100268716B1
KR100268716B1 KR1019930001847A KR930001847A KR100268716B1 KR 100268716 B1 KR100268716 B1 KR 100268716B1 KR 1019930001847 A KR1019930001847 A KR 1019930001847A KR 930001847 A KR930001847 A KR 930001847A KR 100268716 B1 KR100268716 B1 KR 100268716B1
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phosphor
blue
mixed
sio
zns
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KR1019930001847A
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KR940019833A (en
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윤원호
정좌영
이준배
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김순택
삼성에스디아이주식회사
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Priority to KR1019930001847A priority Critical patent/KR100268716B1/en
Priority to MYPI93001149A priority patent/MY109224A/en
Priority to US08/077,913 priority patent/US5277841A/en
Priority to JP5161601A priority patent/JPH06248262A/en
Priority to CN93107649A priority patent/CN1039719C/en
Priority to DE4321793A priority patent/DE4321793A1/en
Publication of KR940019833A publication Critical patent/KR940019833A/en
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
    • C09K11/641—Chalcogenides
    • C09K11/642—Chalcogenides with zinc or cadmium
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/0883—Arsenides; Nitrides; Phosphides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/60—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing iron, cobalt or nickel
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/77742—Silicates

Abstract

PURPOSE: A mixed-blue fluorescent substance is provided for illuminating blue color of the display element driven under high current density and high pressure by preparing the substance with specific mixture of zinc sulfide and yttrium silicate. CONSTITUTION: The mixed-blue fluorescent substance having luminescent blue color useful in the production of the display element comprises zinc surfide(ZnS:Ag,Al) having Ag restoring, Al co-restoring abilities and yttrium silicate(Y2SiO5:Tb) having Tb restoring ability and coated with the blue pigment such as ultramarine, Prussian blue, cobalt blue, cerulean blue or CuS, in a ratio of less than 20 wt.% of Y2SiO5:Tb component based on the weight of ZnS:Ag,Al component. The blue fluorescent material has excellent brightness and gamma value designed by (the brightness at 1200 micro-ampere to the brightness at 200 micro-ampere) x 1/6 under 25 kV.

Description

혼합 청색발광 형광체Mixed Blue Luminescent Phosphors

제1도는 종래의 형광체와 본 발명의 혼합 청색발광 형광체에 대한 발광스펙트럼을 나타내는 그래프로서, a는 종래의 ZnS:Ag,Al 단일형광체에 대한 것이고, b 및 c는 본 발명의 혼합형광체에 대한 것이다.1 is a graph showing the emission spectrum of the conventional phosphor and the mixed blue light-emitting phosphor of the present invention, where a is for the conventional ZnS: Ag, Al monophosphor, and b and c are for the mixed phosphor of the present invention. .

본 발명은 혼합 청색발광 형광체에 관한 것으로서, 특히 휘도와 γ특성(전류 대비 휘도 특성)이 향상된 투사형 혼합 청색발광 형광체에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixed blue light emitting phosphor, and more particularly, to a projection type mixed blue light emitting phosphor having improved luminance and?

현재 널리 사용되고 있는 청색발광 형광체로는 텅스텐산 칼슘형광체(CaWO4), 은 부활, 염소 공부활 황화아연 형광체(ZnS:Ag,Cl), 은 부활 황화아연 형광체(ZnS:Ag), 은 부활, 알루미늄 공부활 황화아연 형광체(ZnS:Ag,Al) 등과 같은 ZnS계 형광체가 있다. 이들 형광체 중에서 고전류밀도의 투사형 음극선관에 사용되고 있는 청색발광 형광체는 ZnS:Ag,Al 형광체이다.Blue luminescent phosphors currently widely used include calcium tungsten phosphor (CaWO 4 ), silver activator, chlorine lubricating zinc sulfide phosphor (ZnS: Ag, Cl), silver activator zinc sulfide phosphor (ZnS: Ag), silver activator, aluminum There are ZnS-based phosphors such as zinc sulfide phosphors (ZnS: Ag, Al). Among these phosphors, the blue light emitting phosphor used in the high current density projection type cathode ray tube is a ZnS: Ag, Al phosphor.

그런데 상기 ZnS:Ag,Al 형광체는 투사형 음극선관과 같이 고전류밀도 영역에서 발광하게 되는 형광체로서는 전류에 대한 특성이 썩 좋지 않기 때문에 특히 휘도 및 전류휘도 포화 특성면에서의 개선이 요구되고 있어서 이에 대한 많은 연구가 진행되고 있다. 특히 희토류계 형광체에 대한 관심이 높아지고 있는데, 이는 고가이지만 휘도 특성이 좋고 특히 투사관과 같은 고전류밀도 조건하에서 우수한 전류-휘도 포화 특성을 갖기 때문이다.However, since the ZnS: Ag, Al phosphor emits light in a high current density region, such as a projection cathode ray tube, the characteristics of the current are not very good, and therefore, the improvement in luminance and current luminance saturation characteristics is required. Research is ongoing. In particular, interest in rare earth-based phosphors is increasing because they are expensive but have good luminance characteristics and particularly have excellent current-luminance saturation characteristics under high current density conditions such as projection tubes.

본 발명의 목적은 상기한 연구에 부합하여 특히 휘도 특성과 γ 특성이 향상된 투사형 청색발광 형광체를 제공하고자 하는 것이다.It is an object of the present invention to provide a projection type blue light-emitting phosphor having improved luminance and gamma characteristics, in particular in accordance with the above studies.

상기한 본 발명의 목적은 은 부활, 알루미늄 공부활 황화아연 형광체(ZnS:Ag,Al)와 터븀 부활 규산이트륨 형광체(Y2SiO5:Tb)의 혼합 청색발광 형광체에 의해 달성된다.The object of the present invention described above is achieved by a mixed blue light emitting phosphor of silver activated, aluminum sintered zinc sulfide phosphor (ZnS: Ag, Al) and terbium activated yttrium silicate phosphor (Y 2 SiO 5 : Tb).

특히 상기 Y2SiO5:Tb 형광체는 청색안료가 코팅된 형광체인 것이 바람직하며, 상기 두 형광체의 혼합량은 Y2SiO5:Tb의 양이 혼합형광체 총량과의 혼합량을 기준으로 하여 20중량% 이하가 되도록 하는 것이 바람직하다. ZnS:Ag,Al 형광체에 Y2SiO5:Tb 형광체를 미량만 혼합하여도 본 발명의 효과는 얻을 수 있으며, 혼합량이 20중량%를 초과하게 되면 색순도가 열화되는 문제가 있으므로, 휘도 향상 효과와 색순도 열화의 문제를 동시에 고려할 때 상기 범위가 적당하다는 것이다. 더욱 바람직한 Y2SiO5:Tb의 혼합량은 혼합 형광체 총량의 10중량% 이하가 되도록 한다.In particular, the Y 2 SiO 5 : Tb phosphor is preferably a blue pigment-coated phosphor, the mixing amount of the two phosphors is less than 20% by weight based on the total amount of Y 2 SiO 5 : Tb and the total amount of the mixed phosphor It is preferable to Even if only a small amount of the Y 2 SiO 5 : Tb phosphor is mixed with the ZnS: Ag, Al phosphor, the effect of the present invention can be obtained. When the amount exceeds 20% by weight, the color purity is deteriorated. The range is appropriate when considering the problem of color purity deterioration at the same time. More preferably, the amount of Y 2 SiO 5 : Tb mixed is 10% by weight or less of the total amount of the mixed phosphors.

Y2SiO5:Tb 형광체는 녹색발광 희토류 형광체인데 γ 특성이 우수한 형광체로 알려져 있다. 본 발명에서는 투사관용 ZnS:Ag,Al 청색발광 형광체에 γ 특성이 우수한 상기 Y2SiO5:Tb 형광체를 소량혼합시킴으로써 ZnS:Ag,Al 형광체의 청색좌표(x/y=0.1459/0.0578)를 거의 벗어나지 않으면서도 휘도 및 포화특성을 크게 향상시킨 형광체를 얻는 것이다.The Y 2 SiO 5 : Tb phosphor is a green light emitting rare earth phosphor and is known as a phosphor having excellent γ properties. In the present invention, the blue coordinates (x / y = 0.1459 / 0.0578) of the ZnS: Ag, Al phosphor are almost mixed by mixing a small amount of the Y 2 SiO 5 : Tb phosphor having excellent γ characteristics with the ZnS: Ag, Al blue luminescent phosphor for a projection tube. It is possible to obtain a phosphor in which the luminance and saturation characteristics are greatly improved without departing.

아래 표 1은 본 발명의 혼합형광체에 있어서 각각의 원료 형광체의 γ 특성치 및 색좌표를 나타낸 것이다.Table 1 below shows the γ characteristic values and color coordinates of each raw material phosphor in the mixed phosphor of the present invention.

[표 1]TABLE 1

상기 표 1로부터 Y2SiO5:Tb 형광체는 녹색발광 형광체임을 알 수 있는데, 이 때문에 Y2SiO5:Tb 형광체의 혼합량은 청색 색좌표에 영향을 주지 않을 정도의 소량으로 하는 것이 필요하다.It can be seen from Table 1 that the Y 2 SiO 5 : Tb phosphor is a green light emitting phosphor, and therefore, the amount of the Y 2 SiO 5 : Tb phosphor mixed in a small amount does not affect the blue color coordinate.

Y2SiO5:Tb 형광체를 소량 혼합한다 하더라도 색좌표의 벗어남이 크지는 않지만, 본 발명자는 상기 Y2SiO5:Tb 형광체의 혼합에 따른 색좌표 문제를 완전히 해결할 수 있는 방법을 계속적으로 연구하던 중, 상기 Y2SiO5:Tb 녹색발광 형광체의 표면을 청색안료로 코팅하는 것에 의해 이 문제를 완전히 해결할 수 있었다.Even if a small amount of Y 2 SiO 5 : Tb phosphor is mixed, the deviation of the color coordinates is not large, but the present inventors are continuously studying a method to completely solve the color coordinate problem caused by the mixing of the Y 2 SiO 5 : Tb phosphor. This problem could be completely solved by coating the surface of the Y 2 SiO 5 : Tb green light-emitting phosphor with a blue pigment.

상기 청색 안료로서는 통상의 청색 안료가 모두 사용될 수 있는데, 바람직하게는 군청(ultramarine; 3NaAl·SiO2·Na2S2), 감청(Prussian blue; Fe4[Fe(CN)6]3·nH2O), 코발트 블루(cobalt blue; CoO·nAl2O3), 세룰리안 블루(cerulean blue; CoO·nSnO2), 황화제2구리(CuS) 등이 사용될 수 있다.As the blue pigment, all conventional blue pigments may be used. Preferably, ultramarine (3NaAl.SiO 2 .Na 2 S 2 ), prussian blue; Fe 4 [Fe (CN) 6 ] 3 .nH 2 O), cobalt blue (CoO nAl 2 O 3 ), cerulean blue (CoO nSnO 2 ), cupric sulfide (CuS) and the like may be used.

이하 본 발명을 구체적인 실시예를 통하여 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail through specific examples.

먼저, ZnS:Ag,Al 형광체의 제조방법을 설명하기로 한다.First, a method of manufacturing a ZnS: Ag, Al phosphor will be described.

ZnS 100g, Al(NO3)30.55g, NaI 0.33g, NH4I 0.067g, KI 0.083g, S 0.67g 및 250ppm 농도의 Ag 이온 용액 120ml를 균일하게 될 때까지 혼합한 후, 환원성 분위기하에서 950° 온도로 210분간 소성한다. 소성후 세정, 볼밀, 건조하여 ZnS:Ag,Al 형광체를 제조한다.ZnS 100g, Al (NO 3 ) 3 0.55g, NaI 0.33g, NH 4 I 0.067g, KI 0.083g, S 0.67g and 120ml of Ag ion solution at 250ppm concentration were mixed until uniform, then in a reducing atmosphere Fire for 210 minutes at 950 °. After firing, washing, ball milling, and drying to prepare a ZnS: Ag, Al phosphor.

얻어진 상기 ZnS:Ag,Al 형광체를 소정량의 코발트 블루 청색 안료가 코팅된 Y2SiO5:Tb 형광체와 균일하게 혼합한다. 비교를 위해 Y2SiO5:Tb 형광체와 혼합하지 않은 ZnS:Ag,Al(100%) 단일형광체를 시료 #1로하고, ZnS:Ag,Al(95%)+Y2SiO5:Tb(5%) 혼합 형광체를 시료 #2로 하고(비교를 위해 코발트 블루 안료가 코팅되지 않은 Y2SiO5:Tb 형광체를 혼합하여 시료 #2-1을 얻었다), ZnS:Ag,Al(90%)+Y2SiO5:Tb(10%) 혼합 형광체를 시료 #3로 하였다.The obtained ZnS: Ag, Al phosphor is uniformly mixed with a Y 2 SiO 5 : Tb phosphor coated with a predetermined amount of cobalt blue blue pigment. For comparison, ZnS: Ag, Al (100%) monophosphor was not mixed with Y 2 SiO 5 : Tb phosphor as sample # 1, and ZnS: Ag, Al (95%) + Y 2 SiO 5 : Tb (5 %) Y 2 SiO 5 uncoated cobalt blue pigment to the (compare the mixed phosphor as a sample # 2: a mixture of Tb phosphor to obtain a sample # 2-1), ZnS: Ag, Al (90%) + Y 2 SiO 5 : Tb (10%) mixed phosphor was used as Sample # 3.

얻어진 혼합형광체 분체의 특성을 ZnS:Ag,Al 형광체 분체의 특성과 함께 표 2에 나타내었다.The characteristics of the obtained mixed phosphor powder are shown in Table 2 together with the properties of the ZnS: Ag, Al phosphor powder.

[표 2]TABLE 2

* 상기 각 데이타는 cathodoluminescence 장치로 측정한 것이다.* Each of the above data is measured by cathodoluminescence apparatus.

표 2로부터 알 수 있는 바와 같이 본 발명의 혼합형광체는 종래의 ZnS:Ag,Al 단일형광체 보다 휘도가 크게 향상되고 색좌표도 거의 청색에 가까운 특성을 갖고 있다. 그리고 청색 안료가 코팅되지 않은 Y2SiO5:Tb 형광체를 혼합한 경우와 청색 안료가 코팅된 Y2SiO5:Tb 형광체라도 그 혼합량이 많은 경우에는 색좌표상에서 y값이 커져 색감이 좋지 못하다는 문제가 있음을 알 수 있다.As can be seen from Table 2, the mixed phosphor of the present invention has a much higher luminance than the conventional ZnS: Ag, Al monophosphor, and the color coordinates are almost blue. And Y 2 SiO 5 is a blue pigment, uncoated: when mixing the Tb phosphor and a blue pigment is coated Y 2 SiO 5: Tb phosphor, even the blending amount is large, the value of y is not good is increased color on a color coordinate when the matter It can be seen that there is.

휘도와 색감이 모두 우수한 시료 #2 혼합형광체를 사용하여 형광막을 제조하였다. 형광막은 침강법을 사용하여 제조하였으며 얻어진 형광막에 대한 휘도 및 γ 특성은 디마운터블 시스템(demountable system)을 사용하여 측정하였다.The fluorescent film was manufactured using the sample # 2 mixed phosphor excellent in both brightness and color. The fluorescent film was prepared using the sedimentation method, and the luminance and γ properties of the obtained fluorescent film were measured using a demountable system.

[표 3]TABLE 3

* 상기 표에서 상대 휘도는 25KV의 전압에서, 전류값이 550μA일 때 측정한 값으로서 시료 #1에 대한 값이 1.17, 시료 #2에 대한 값이 1.41이었다.* In the above table, the relative luminance was measured when the current value was 550 μA at a voltage of 25 KV. The value for Sample # 1 was 1.17 and the value for Sample # 2 was 1.41.

* γ 특성치는 25KV 전압에서 전류를 증가시키면서 다음식에 따라 구한값이다.* The value of γ is obtained from the following equation while increasing the current at 25KV.

표 3으로부터 ZnS:Ag,Al 형광체에, 청색 안료가 코팅된 Y2SiO5:Tb 형광체를 소량 혼합하여 얻어진 시료의 휘도는 분체 상태에서나 형광막 상태 모두에서 ZnS:Ag,Al 단일형광체에 비해 휘도면에서 거의 20% 정도 향상되었음을 알 수 있다. γ 값도 약 5-6% 향상되어 ZnS:Ag,Al 단일형광체 보다 고전류밀도하에서 훨씬 우수한 형광체 특성을 보인다는 것을 알 수 있다.From Table 3, the luminance of the sample obtained by mixing a small amount of the Y 2 SiO 5 : Tb phosphor coated with a blue pigment to the ZnS: Ag, Al phosphor was higher than that of the ZnS: Ag, Al single phosphor in the powder state or the fluorescent film state. In fact, it is almost 20% better. It can be seen that the γ value is also improved by about 5-6%, which shows much better phosphor characteristics under high current density than the ZnS: Ag, Al single phosphor.

또한 Y2SiO5:Tb 형광체의 혼합으로 인하여 발생되는 색순도의 열화 문제는 청색 안료를 코팅함으로써 완전히 해결할 수 있게 되었다.In addition, the problem of degradation of color purity caused by mixing of Y 2 SiO 5 : Tb phosphors can be completely solved by coating a blue pigment.

제1도는 종래의 형광체와 본 발명의 혼합형광체에 대한 발광스펙트럼을 나타내는 그래프로서, a는 종래의 ZnS:Ag,Al 형광체에 대한 것이고, b는 본 발명의 시료 #2 혼합형광체에 대한 것이며, c는 본 발명의 시료 #3 혼합형광체에 대한 것이다. 본 발명의 혼합 형광체의 경우 550nm 파장 영역에서 Y2SiO5:Tb 형광체에 의한 녹색 발광 피크가 나타나지만 이는 전체 면적에 비해 미미한 것으로서 형광체 자체의 순도 특성과 비교할 때 크게 문제되지 않는 것으로 판단된다.1 is a graph showing the emission spectrum of the conventional phosphor and the mixed phosphor of the present invention, a is for the conventional ZnS: Ag, Al phosphor, b is for the sample # 2 mixed phosphor of the present invention, c Is for sample # 3 mixed phosphor of the present invention. In the case of the mixed phosphor of the present invention, a green emission peak due to the Y 2 SiO 5 : Tb phosphor appears in the 550 nm wavelength region, which is insignificant compared to the total area, and is not considered to be a problem when compared with the purity characteristic of the phosphor itself.

이상과 같이 본 발명의 혼합 형광체는 황화아연계 청색발광 형광체의 휘도 특성 및 γ 특성을 향상시키기 위하여 희토류계 녹색발광 형광체를 소량 혼합하여 이루어진 것으로서, 우수한 휘도 향상 효과가 얻어진다. 또한 녹색발광 형광체의 표면을 청색 안료로서 코팅함으로써 이 형광체의 색좌표를 청색 영역으로 이동시키는 것이 가능하기 때문에 색순도에도 전혀 영향을 주지 않는 청색발광 형광체가 된다.As described above, the mixed phosphor of the present invention is obtained by mixing a small amount of rare earth-based green light-emitting phosphors in order to improve the luminance and γ properties of the zinc sulfide blue light-emitting phosphor. Further, by coating the surface of the green light emitting phosphor as a blue pigment, it is possible to shift the color coordinates of the phosphor to the blue region, thereby making it a blue light emitting phosphor which does not affect color purity at all.

Claims (4)

은 부활 알루미늄 공부활 황화아연 형광체(ZnS:Ag,Al)와 터븀 부활 규산이트륨 형광체(Y2SiO5:Tb)의 혼합 청색발광 형광체.A silver blue aluminum fluorescently mixed zinc sulfide phosphor (ZnS: Ag, Al) and a terbium-activated yttrium silicate phosphor (Y 2 SiO 5 : Tb). 제1항에 있어서, 상기 Y2SiO5:Tb 형광체가 그 표면에 청색안료가 코팅된 형광체인 것을 특징으로 하는 혼합 청색발광 형광체.The mixed blue light emitting phosphor according to claim 1, wherein the Y 2 SiO 5 : Tb phosphor is a phosphor coated with a blue pigment on its surface. 제2항에 있어서, 상기 청색 안료가 군청(ultramarine; 3NaAl·SiO2·Na2S2), 감청(Prussian blue; Fe4[Fe(CN)6]3·nH2O), 코발트 블루(cobalt blue; CoO·nAl2O3), 세룰리안 블루(cerulean blue; CoO·nSnO2) 및 황화제2구리(CuS) 중 적어도 하나인 것을 특징으로 하는 혼합 청색발광 형광체.The method of claim 2, wherein the blue pigment is ultramarine (3NaAl.SiO 2 .Na 2 S 2 ), Prussian blue; Fe 4 [Fe (CN) 6 ] 3 nH 2 O), cobalt blue (cobalt) blue; CoO.nAl 2 O 3 ), cerulean blue (CoO.nSnO 2 ) and cupric sulfide (CuS) is a mixed blue light emitting phosphor characterized in that at least one. 제1항에 있어서, 상기 Y2SiO5:Tb 형광체의 혼합량은 혼합형광체 총량을 기준으로하여 20중량% 이하인 것을 특징으로 하는 혼합 청색발광 형광체.The mixed blue light emitting phosphor according to claim 1, wherein the mixed amount of the Y 2 SiO 5 : Tb phosphor is 20% by weight or less based on the total amount of the mixed phosphor.
KR1019930001847A 1993-02-11 1993-02-11 A blue mixed phosphor KR100268716B1 (en)

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KR1019930001847A KR100268716B1 (en) 1993-02-11 1993-02-11 A blue mixed phosphor
MYPI93001149A MY109224A (en) 1993-02-11 1993-06-12 Mixed blue emitting phosphor.
US08/077,913 US5277841A (en) 1993-02-11 1993-06-18 Mixed blue emitting phosphor
JP5161601A JPH06248262A (en) 1993-02-11 1993-06-30 Blue emitting phosphor mixture
CN93107649A CN1039719C (en) 1993-02-11 1993-06-30 Mixed blue emitting phosphor
DE4321793A DE4321793A1 (en) 1993-02-11 1993-06-30 Mixed-blue-emitting phosphorescent substance

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KR20030055107A (en) * 2001-12-25 2003-07-02 가세이 옵토닉스 가부시키가이샤 Pigment-attached phosphor and method for producing the same

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KR100502334B1 (en) * 2000-12-29 2005-07-20 삼성에스디아이 주식회사 Blue phosphors for PDP doped with colored oxides and preparing process thereof

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JPS5523106A (en) * 1978-03-22 1980-02-19 Dainippon Toryo Co Ltd Blue luminescent composition and low speed electron beam-exciting fluorescent display tube

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JPS5523106A (en) * 1978-03-22 1980-02-19 Dainippon Toryo Co Ltd Blue luminescent composition and low speed electron beam-exciting fluorescent display tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030055107A (en) * 2001-12-25 2003-07-02 가세이 옵토닉스 가부시키가이샤 Pigment-attached phosphor and method for producing the same

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