KR910002681B1 - Green-radiation fluorescent substance - Google Patents
Green-radiation fluorescent substance Download PDFInfo
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- KR910002681B1 KR910002681B1 KR1019880004270A KR880004270A KR910002681B1 KR 910002681 B1 KR910002681 B1 KR 910002681B1 KR 1019880004270 A KR1019880004270 A KR 1019880004270A KR 880004270 A KR880004270 A KR 880004270A KR 910002681 B1 KR910002681 B1 KR 910002681B1
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Abstract
Description
첨부 도면은 본 발명의 형광체에 있어서 세륨(Ce) 함유량과 발광휘도와의 관계를 나타낸 그래프이다.The accompanying drawings are graphs showing the relationship between cerium (Ce) content and light emission luminance in the phosphor of the present invention.
본 발명은 녹색 발광 형광체에 관한 것으로서, 특히 미량의 세륨(Ce)을 함유시켜 발광 휘도를 향상시킨 동, 금부활 알루미늄 공부활 황화아연 녹색 발광 형광체에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to green light emitting phosphors, and more particularly, to copper and gold-reinforced aluminum sulfide zinc sulfide green light emitting phosphors containing a small amount of cerium (Ce) to improve luminescence brightness.
종래의 칼라 텔레비젼 브라운관의 녹색 발광 성분 형광체로서는 동부활 알루미늄 공부활 황화아연 형광체(이하 ZnS : CuAl로 표기), 동부활 알루미늄 공부활 황화 카드뮴아연 형광체(이하(ZnCd)S : CuAl로 표기), 동, 금부활 알루미늄 공부활 황화아연 형광체(이하 ZnS : CuAuAl로 표기)가 알려져 있다.The green luminescent component phosphor of the conventional color television CRT is a copper active aluminum lead-activated zinc sulfide phosphor (hereinafter referred to as ZnS: CuAl), a copper active aluminum lead-active cadmium zinc sulfide phosphor (hereinafter referred to as (ZnCd) S: CuAl), copper And gold-activated aluminum superactive zinc sulfide phosphors (hereinafter referred to as ZnS: CuAuAl) are known.
이중 ZnS : CuAl 녹색 형광체는 발광색이 다소 단파장측에 있어, 실용의 칼라 텔레비젼 브라운관에 사용시 백색 휘도가 충분치 않고, 또한 백색을 나타내는 경우에는 청, 녹색 형광체에 비해 발광 효율이 낮은 적색 형광체의 전류 배분을 증가해야 하므로 적색 전자총 수명 저하로 인한 화질 저하의 문제가 있어 현재는 칼라 텔레비젼 브라운관용 녹색 발광 성분으로는 거의 사용하지 않고 있다.Among the ZnS: CuAl green phosphors, the emission color is rather short-wavelength, and when used in a practical color television CRT, the white luminance is not sufficient, and when the color is white, the current distribution of the red phosphor, which is lower in luminous efficiency than the blue and green phosphors, is obtained. Since it has to be increased, there is a problem of deterioration in image quality due to a decrease in the red electron gun life, and currently it is rarely used as a green light emitting component for color television CRTs.
(ZnCd)S : CuAl 녹색 형광체는 발광색 및 발광휘도의 면에서 ZnS : CuAl, ZnS : CuAuAl 녹색 형광체보다 우수하나, 형광체중에 포함된 카드뮴(Cd)의 공해와 인체유해 문제로 그 사용이 억제되고 있다. 따라서 최근에는 ZnS : CuAl, (ZnCd)S : CuAl 녹색 형광체 대신에 칼라 텔레비젼 브라운관의 녹색 발광 성분으로서 ZnS : CuAuAl 녹색 형광체가 사용되고 있다.(ZnCd) S: CuAl green phosphor is superior to ZnS: CuAl, ZnS: CuAuAl green phosphors in terms of emission color and luminance, but its use is suppressed due to pollution and human body harmfulness of cadmium (Cd) contained in the phosphor. . Therefore, in recent years, ZnS: CuAuAl green phosphors have been used as green light emitting components of color television CRTs instead of ZnS: CuAl and (ZnCd) S: CuAl green phosphors.
그러나 ZnS : CuAuAl 녹색형광체는 (ZnCd) S : CuAl 녹색 형광체에 비해 그 발광 휘도가 10-12% 낮고, 칼라텔레비젼 브라운관 특히 고콘트라스트 칼라 텔레비젼 브라운관에 있어서는 보다 고 휘도의 발광을 나타내는 형광막이 상업적으로 요구되고 있어, 이에 따라 보다 고휘도의 발광을 나타내는 ZnS : CuAuAl 녹색 형광체가 요망되고 있다.However, ZnS: CuAuAl green phosphors have a 10-12% lower emission luminance than (ZnCd) S: CuAl green phosphors, and commercially required fluorescent films exhibiting higher luminance in color television CRT tubes, especially in high contrast color TV CRTs. Accordingly, there is a demand for a ZnS: CuAuAl green phosphor that exhibits higher luminance of light emission.
본 발명은 종래 ZnS : CuAuAl 녹색 형광체보다 더 높은 발광 휘도를 나타내는 ZnS : CuAuAlCe 녹색 형광체를 제공하는 것을 목적으로 한다.An object of the present invention is to provide a ZnS: CuAuAlCe green phosphor which exhibits higher emission luminance than a conventional ZnS: CuAuAl green phosphor.
본 발명자는 위의 목적을 달성하기 위하여 황화아연모체 1g에 대해 동부활량이 2×10-5g 내지 3×10-4g 금부활량이 5×10-5g 내지 25×10-4g, 알루미늄 공부활량이 3.5×10-5g 내지 50×10-3g인 실용적인 ZnS : CuAuAl 녹색 형광체에 대하여 여러 가지 실험을 하여왔다.In order to achieve the above object, the present inventors have an eastern activity of 2 × 10 -5 g to 3 × 10 -4 g gold reactivity of 5 × 10 -5 g to 25 × 10 -4 g, aluminum for 1 g of zinc sulfide Various experiments have been carried out on practical ZnS: CuAuAl green phosphors having an active capacity of 3.5 × 10 −5 g to 50 × 10 −3 g.
그 결과 이 ZnS : CuAuAl 녹색 형광체를 제조하는데 있어서, 형광체 원료중에 소량의 세륨(Ce)을 함유시키면 발광색을 실질적으로 변화시키지 않고 발광 휘도를 향상시키는 것이 가능하다는 것을 알게 되었다.As a result, in producing this ZnS: CuAuAl green phosphor, it was found that when a small amount of cerium (Ce) is contained in the phosphor raw material, it is possible to improve the emission luminance without substantially changing the emission color.
본 발명의 녹색 발광 형광체는 동부활량이 2×10-5g 내지 3×10-4g, 금부활량이 5×10-5g 내지 25×10-4g 알루미늄 공부활량이 3.5×10-5g 내지 50×10-3g의 범위에 있는 Zns : CuAuAl 녹색 형광체에 대해 세륨(Ce)을 함유시킨 형광체이며, 세륨(Ce)함유량이 황화아연 모체 1g에 대해 0보다 많고 5×10-3g이하인 것을 특징으로 한다.The green light emitting phosphor of the present invention has an eastern activity of 2 × 10 -5 g to 3 × 10 -4 g, and a gold reactivity of 5 × 10 -5 g to 25 × 10 -4 g of aluminum activity of 3.5 × 10 -5 g A phosphor containing cerium (Ce) in a Zns: CuAuAl green phosphor in the range of from 50 × 10 −3 g, wherein the content of cerium (Ce) is greater than 0 and less than 5 × 10 −3 g for 1 g of zinc sulfide matrix It is characterized by.
본 발명의 녹색 발광 형광체는 세륨(Ce)을 함유하지 않은 형광체보다도 고휘도를 나타내지만, 그 발광색은 세륨(Ce)을 함유하지 않은 종래의 ZnS : CuAuAl 녹색 형광체의 발광색과 거의 같다.The green luminescent phosphor of the present invention exhibits higher luminance than the phosphor containing no cerium (Ce), but its emission color is almost the same as that of the conventional ZnS: CuAuAl green phosphor containing no cerium (Ce).
본 발명의 세륨(Ce)을 소량 함유하는 ZnS : CuAlAlCe 녹색 형광체는 이하에 설명하는 제조 방법에 의해 제조된다.The ZnS: CuAlAlCe green fluorescent substance containing a small amount of cerium (Ce) of this invention is manufactured by the manufacturing method demonstrated below.
부활제인 동 및 금은 황산동(CuSo4,5H2O), 질산동(Cu(NO3)2,6H2O)등의 동화합물과 염화금산(HAuCL4, 2H2O) 등의 금화합물로서, 또한 공부활제인 알루미늄은 황산알루미늄(Al2(SO4)3, 18H2O) 질산 알루미늄(Al(NO3)3,9H2O)등의 알루미늄 화합물로서 첨가된다.Copper and gold as activators are copper compounds such as copper sulfate (CuSo 4, 5H 2 O), copper nitrate (Cu (NO 3 ) 2, 6H 2 O), and gold compounds such as gold chloride (HAuCL 4 , 2H 2 O). In addition, aluminum, which is an active agent, is added as an aluminum compound such as aluminum sulfate (Al 2 (SO 4 ) 3 , 18H 2 O) aluminum nitrate (Al (NO 3 ) 3 , 9H 2 O).
동부활량은 황화아연 모체 1g에 대해 2×10-5g 내지 3×10-4g의 범위에 있고 발광 색도점의 견지에서 바람직하게는 8×10-5g 내지 17×10-5g의 범위가 좋다.The eastern activity is in the range of 2 × 10 −5 g to 3 × 10 −4 g for 1 g of zinc sulfide matrix and preferably in the range of 8 × 10 −5 g to 17 × 10 −5 g in light of the luminous chromaticity point. Is good.
다음에 금부활량은 황화아연 모체 1g에 대해 5×10-5g 내지 25×10-4g의 범위에 있고, 보다 바람직한 것은 8×10-5g 내지 5×10-4g의 범위이다.Next, the gold reactivity amount is in the range of 5 × 10 −5 g to 25 × 10 −4 g with respect to 1 g of the zinc sulfide matrix, more preferably in the range of 8 × 10 −5 g to 5 × 10 −4 g.
또한 알루미늄의 공부활량은 황화아연 모체 1g에 대해 3.5×10-5g 내지 50×10-3g의 범위에 있고, 보다 바람직하기는 1×10-4g 내지 1×10-3g의 범위이다.In addition, the activity of aluminum is in the range of 3.5 × 10 −5 g to 50 × 10 −3 g with respect to 1 g of zinc sulfide matrix, and more preferably in the range of 1 × 10 −4 g to 1 × 10 −3 g. .
세륨(Ce)은 산화세륨(CeO2), 질산세륨(Ce(NO3)3)등의 세륨 화합물로서 첨가된다. 이 경우 첨가되는 세륨(Ce)의 양은 황화아연모체 1g에 대해 0보다 많고 5×10-3g 이하의 범위에 있고, 발광 휘도의 점에서 보다 바람직한 것은 1×10-5g 내지 1×10-3g 이하가 좋다. 부활제인 동 및 금, 알루미늄과 첨가물인 세륨의 황화아연에의 첨가는 위의 물질을 고체 상태로 첨가하는 건식법이나 적당한 용매에 용해하여 첨가하는 습식법으로도 무방하다.Cerium (Ce) is added as a cerium compound such as cerium oxide (CeO 2), cerium nitrate (Ce (NO 3) 3) . In this case, the amount of cerium (Ce) added is in the range of more than 0 and less than 5 x 10 -3 g for 1 g of zinc sulfide, and more preferably 1 x 10 -5 g to 1 x 10 - in terms of luminescence brightness. 3 g or less is good. The addition of copper and gold, aluminum, and activator, cerium, as an additive to zinc sulfide may be performed by a dry method of adding the above substances in a solid state or by a wet method of dissolving in an appropriate solvent.
위의 부활제, 공부활제 및 세륨 이외에도 일반적인 용제로서 사용되는 알칼리금속 할로겐화물, 알칼리토류금속 할로겐화물 및 할로겐화 암모늄등을 첨가해도 좋다.Alkali metal halides, alkaline earth metal halides, and ammonium halides, which are used as general solvents, may be added in addition to the above-mentioned activators, study agents, and cerium.
또한 산화방지를 위해 유황을 첨가하는 경우도 있다. 위의 부활제, 공부활제, 첨가물 및 용제의 혼합조작은 유봉이나 볼밀등의 혼합장치를 사용하여 충분히 혼합한다.In addition, sulfur may be added to prevent oxidation. Mixing operation of the above activator, study agent, additives and solvent is mixed well using a mixing device such as pestle or ball mill.
다음에 위의 혼합 조작에서 얻어진 원료 혼합물을 석영이나 알루미나 도지기등의 내열성 용기에 충진하여 소성을 한다.Next, the raw material mixture obtained in the above mixing operation is filled into a heat resistant container such as quartz or alumina porcelain and fired.
소성은 황화수소 분위기 또는 이황화탄소를 포함한 황화성 분위기등과 같이 황화물 형광체 제조에서 일반적으로 채용되는 환원성 분위기중에서 실시된다.Firing is carried out in a reducing atmosphere generally employed in the manufacture of sulfide phosphors, such as hydrogen sulfide atmosphere or sulfide atmosphere containing carbon disulfide.
소성온도는 940℃에서 1030℃의 범위가 적당하고, 보다 바람직하게는 980℃ 내지 1010℃ 온도 범위에서 행한다.The firing temperature is preferably in the range of 940 ° C to 1030 ° C, more preferably in the temperature range of 980 ° C to 1010 ° C.
소성시간은 채용하는 소성 온도등에 따라 다르나, 일반적으로 30분 내지 6시간이 적당하다.The firing time depends on the firing temperature to be employed, but generally 30 minutes to 6 hours is appropriate.
소성후 얻어진 형광체를 수세하여 건조하면 본 발명의 형광체를 얻는다. 얻어진 본 발명의 형광체는 종래의 Zns : CuAuAl 녹색 형광체보다도 고휘도의 녹색 발광을 나타낸다.The phosphor obtained after firing is washed with water and dried to obtain the phosphor of the present invention. The obtained phosphor of the present invention exhibits higher luminance green light emission than the conventional Zns: CuAuAl green phosphor.
도면은 동부활양이 1.5×10-4g, 금부활양이 1.4×10-4g인 본 발명의 ZnS : CuAuAlCe 녹색 형광체에 있어서 세륨(Ce) 함유량과 발광 휘도와의 관계를 나타낸다. 도면에서 세륨(Ce) 함유량을 나타내는 횡축은 ZnS 모체 1g에 대한 세륨(Ce) g수를 나태내고 있고, 또한 발광 휘도를 나타내는 종축은 동, 금의 부활량을 동일하게 한 경우에 Ce를 함유하지 않은 ZnS : CuAuAl 녹색 형광체의 발광 휘도를 100%로 한 상대치를 나타낸다.The figure shows the relationship between cerium (Ce) content and luminescence brightness in the ZnS: CuAuAlCe green phosphor of the present invention having an eastern activator of 1.5 × 10 −4 g and a gold rejuvenation of 1.4 × 10 −4 g. In the figure, the abscissa axis showing the cerium (Ce) content indicates the number of cerium (Ce) grams per 1 g of the ZnS matrix, and the ordinate axis indicating the luminescence brightness does not contain Ce when the activating amounts of copper and gold are the same. The relative value which made the luminescence brightness of the non-ZnS: CuAuAl green
도면에서 알 수 있는 바와 같이 본 발명의 형광체는 세륨(Ce) 함유량이 황화아연 모체 1g에 대해 0보다 많고 5×10-3g이하인 경우에 종래의 Zns : CuAuAl 형광체보다도 고휘도의 발광을 나타내고 특히 세륨(Ce) 함유량이 황화아연 모체 1g에 대해 1×10-5g 내지 1×10-3g의 범위에 있는 경우에 발광 휘도의 향상이 현저하다. 게다가 도면은 동부활량이 황화아연 모체 1g에 대해 1.5×10-4g, 금부활량이 1.4×10-4g인 본 발명의 녹색 형광체에서의 세륨(Ce) 함유량과 발광 휘도의 관계이나, 동, 금부활량이 다른 형광체에 대해서도 세륨(Ce) 함유량과 발광 휘도와의 관계는 도면과 같은 경향을 보이는 것이 확인되었다. 다음에 실시예를 통하여 본 발명을 설명한다.As can be seen from the figure, the phosphor of the present invention exhibits higher luminance than the conventional Zns: CuAuAl phosphor when the cerium (Ce) content is more than 0 and less than 5 x 10 -3 g for 1 g of zinc sulfide matrix, and especially cerium When the (Ce) content is in the range of 1 × 10 −5 g to 1 × 10 −3 g with respect to 1 g of the zinc sulfide matrix, the improvement of the luminescence brightness is remarkable. In addition, the diagram shows the relationship between the cerium (Ce) content and the luminescence brightness in the green phosphor of the present invention having an eastern activity of 1.5 × 10 −4 g and a gold activation amount of 1.4 × 10 −4 g with respect to 1 g of a zinc sulfide matrix. It was confirmed that the relationship between the cerium (Ce) content and the luminescence brightness also showed a tendency as shown in the figure for phosphors with different gold reactivity. Next, the present invention will be described by way of examples.
[실시예 1]Example 1
●황화아연 ZnS 1000gZinc sulfide ZnS 1000 g
●산화세륨 CeO21.22×10-5gCerium oxide CeO 2 1.22 * 10 -5 g
●황산동 CuSO4·5H2O 0.59gCopper Sulfate CuSO 4 · 5H 2 O 0.59 g
●염화금산 HAuCl4·2H2O 0.27gGeum chloride HAuCl 4 2H 2 O 0.27 g
●질산알루미늄 Al(NO3)3·9H2O 4.17g● aluminum nitrate Al (NO 3) 3 · 9H 2 O 4.17g
●요오드화칼륨 KI 12gPotassium iodide KI 12 g
●요오드화암모늄 NH4I 10gAmmonium iodide NH 4 I 10 g
●황 S 20gSulfur S 20 g
위의 각 원료를 볼밀을 사용하여 충분 혼합한 후 석영 도가니에 충진하였다. 뚜껑을 덮은 후 이 도가니를 전기로에 넣고 980℃, 3시간 소성하였다.Each of the above raw materials were sufficiently mixed using a ball mill and filled in a quartz crucible. After the lid was covered, the crucible was placed in an electric furnace and calcined at 980 ° C. for 3 hours.
소성후 얻어진 소성물을 도가니에서 꺼내어, 수세하거 건조하였다. 이와 같이하여 Ce 함유량이 황화아연 1g에 대해 1×10-5g, 동, 금부활양 및 알루미늄 공부활양이 황화아연 모체 1g에 대해 각각 1.5×10-4g, 1.4×10-4g 및 3×10-4g인 본 발명의 Ce를 함유하는 ZnS : CuAuAlCe 형광체를 얻었다.The baked material obtained after baking was taken out of the crucible, washed with water, and dried. In this way, the Ce content is 1 × 10 −5 g for 1 g of zinc sulfide, copper, gold reactivation and aluminum for 1.5 g 10 −4 g, 1.4 × 10 −4 g and 1 g for zinc sulfide matrix, respectively. A ZnS: CuAuAlCe phosphor containing Ce of the present invention, 3 × 10 −4 g, was obtained.
위의 본 발명의 형광체는 전자선 여기(戾起)하에서 녹색 발광을 보이고, 그 발광 휘도는 금, 동부활양 및 알루미늄 공부활량이 동일하나, Ce를 함유하지 않은 종래의 ZnS : CuAuAl 형광체(CeO2를 사용하지 않은 종래의 형광체도 위와 동일한 방법으로 제도되었다. 실시예 2이하도 동일하다)의 119%이었다. 게다가 위의 본 발명의 색도점은 (X=0.334, Y=0.596)이고, 상기 종래의 ZnS : CuAuAl 형광체의 발광 색도점(X=0.334, Y=0.596)과 거의 동일하였다.The above phosphor of the present invention shows green light emission under electron beam excitation, and its emission luminance is the same as that of gold, eastern activity, and aluminum activity, but does not contain a conventional ZnS: CuAuAl phosphor (CeO 2). The conventional phosphor which did not use was also drawn in the same manner as above, which was also 119% of Example 2 or below. Furthermore, the chromaticity point of the present invention was (X = 0.334, Y = 0.596), and was almost the same as the emission chromaticity point (X = 0.334, Y = 0.596) of the conventional ZnS: CuAuAl phosphor.
[실시예 2]Example 2
CeO2양을 1.22×10-4g으로 하는 것 이외는 실시예 1과 전부 동일하다. Ce 함유량이 황화아연 1g에 대해 1×10-4g이고, 동, 금부활량 및 알루미늄 공부활량이 황화아연 모체에 대해 각각 1.5×10-4g, 1.4×10-4g 및 3×10-4g인 본 발명의 Ce를 함유하는 ZnS : CuAuAlCe 형광체를 얻었다. 위의 본 발명의 형광체는 전자선 여기하에서 녹색 발광을 보이고, 그 발광 휘도는 동, 금부활량 및 알루미늄 공부활량이 동일하고, Ce를 함유하지 않은 종래 Zns : CuAuAl 형광체의 120%이었다. 게다가 위의 본 발명의 발광 색도점은 (X=0.334, Y=0.594)이고, 상기 종래의 ZnS : CuAuAl 형광체의 발광 색도점(X=0.334, Y=0.592)과 거의 동일하였다.All of them were the same as in Example 1 except that the amount of CeO 2 was 1.22 × 10 −4 g. Ce content is 1 × 10 -4 g for 1 g of zinc sulfide and copper, gold and aluminum activity are 1.5 × 10 -4 g, 1.4 × 10 -4 g and 3 × 10 -4 for zinc sulfide matrix, respectively A ZnS: CuAuAlCe phosphor containing Ce of the present invention, which was g, was obtained. The above phosphor of the present invention exhibits green light emission under electron beam excitation, and its luminescence brightness is equal to 120% of the conventional Zns: CuAuAl phosphor containing no copper, gold reactivity and aluminum activity. Furthermore, the emission chromaticity point of the present invention was (X = 0.334, Y = 0.594), and was almost the same as the emission chromaticity point (X = 0.334, Y = 0.592) of the conventional ZnS: CuAuAl phosphor.
[실시예 3]Example 3
CeO2양을 1.22×10-3g으로 하는 것이외는 실시예 1과 전부 동일하며, Ce 함유량이 황화아연 1g에 대해 1×10-3이고, 동, 금부활량. 및 알루미늄 공부활량이 황화아연 모체에 대해 각각 1.5×10-4g, 1.4×10-4g 및 3×10-3g인 본 발명의 Ce를 함유하는 ZnS : CuAuAlCe 형광체를 얻었다.CeO 2, and the amount of all the same as in Example 1 except that as 1.22 × 10 -3 g, 1 × 10 -3 , and copper, gold fan hwalryang for the Ce content to 1g of zinc sulfide. And ZnS: CuAuAlCe phosphors containing Ce of the present invention having an aluminum activity of 1.5 × 10 −4 g, 1.4 × 10 −4 g, and 3 × 10 −3 g, respectively, for the zinc sulfide matrix.
위의 본 발명의 형광체는 전자선 여기하에서 녹색 발광을 보이고, 그 휘도는 동, 금부활량 및 알루미늄 공부활량이 동일하고, Ce를 함유하지 않은 종래 ZnS : CuAuAl 형광체의 118%이었다.The above phosphor of the present invention exhibits green light emission under electron beam excitation, and its luminance is 118% of that of the conventional ZnS: CuAuAl phosphor containing no copper, gold reactivity and aluminum activity.
위의 본 발명의 발광 색도점은 (X=0.334, Y=0.589)이고, 상기 종래의 ZnS : CuAuAl 형광체의 발광 색도점(X=0.334, Y=0.592)과 거의 동일하였다.The emission chromaticity point of the present invention was (X = 0.334, Y = 0.589), and was almost the same as the emission chromaticity point (X = 0.334, Y = 0.592) of the conventional ZnS: CuAuAl phosphor.
이상에서 설명한 바와 같이 본 발명의 형광체는 종래의 ZnS : CuAuAl 형광체보다도 고휘도의 발광을 나타내는 것인데, 본 발명의 큰 이점은 첨가되는 세륨(Ce)은 발광색에 거의 영향을 미치지 않고, 따라서 동, 금부활량 알루미늄 공부활량이 같은 경우 본 발명의 형광체는 종래의 ZnS : CuAuAl 녹색 형광체와 거의 동일한 발광색을 나타낸다는 것이다.As described above, the phosphor of the present invention exhibits higher luminance than the conventional ZnS: CuAuAl phosphor. However, a great advantage of the present invention is that the added cerium (Ce) hardly affects the emission color. When the aluminum activity is the same, the phosphor of the present invention exhibits almost the same emission color as the conventional ZnS: CuAuAl green phosphor.
즉, 본 발명에 의하면 ZnS : CuAuAl 녹색 형광체를 얻기 위하여 형광체 원료 혼합물에 세륨(Ce)을 첨가하는 것에 의해 종래의 ZnS : CuAuAl과 거의 같은 발광색을 보이면서 ZnS : CuAuAl 형광체보다도 발광휘도가 높은 형광체를 얻는 것이 가능하다.That is, according to the present invention, by obtaining cerium (Ce) in the phosphor raw material mixture to obtain a ZnS: CuAuAl green phosphor, a phosphor having a higher luminous luminance than a ZnS: CuAuAl phosphor can be obtained while exhibiting a light emission color substantially the same as that of the conventional ZnS: CuAuAl phosphor. It is possible.
따라서 텔레비젼용 브라운관의 분야에서 보다 고휘도의 발광을 나타내는 Zns CuAuAl 형광체가 절실히 요구되는 오늘날, 본 발명의 형광체의 칼라 텔레비젼용 브라운관의 형광막의 녹색 발광 성분으로서의 이용가치는 매우 크다.Therefore, when the Zns CuAuAl phosphor which exhibits higher luminance light emission is urgently needed in the field of television CRT, the use value of the fluorescent substance of the fluorescent substance of the present invention as a green light emitting component of the fluorescent film of the CRT tube is very large.
게다가 본 발명의 형광체의 용도는 위의 용도에 국한되는 것이 아니라 종래의 Zns : CuAuAl 형광체 대신에 여러 용도에서 사용될 수 있다는 것은 물론이다.In addition, the use of the phosphor of the present invention is not limited to the above use, of course, can be used in various applications instead of the conventional Zns: CuAuAl phosphor.
Claims (4)
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| KR1019880004270A KR910002681B1 (en) | 1988-04-14 | 1988-04-14 | Green-radiation fluorescent substance |
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