KR100669684B1 - Green Emitting Phosphor for Plasma Display Panel - Google Patents

Green Emitting Phosphor for Plasma Display Panel Download PDF

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KR100669684B1
KR100669684B1 KR1020010008437A KR20010008437A KR100669684B1 KR 100669684 B1 KR100669684 B1 KR 100669684B1 KR 1020010008437 A KR1020010008437 A KR 1020010008437A KR 20010008437 A KR20010008437 A KR 20010008437A KR 100669684 B1 KR100669684 B1 KR 100669684B1
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emitting phosphor
light emitting
green light
phosphor
molar ratio
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KR20020068157A (en
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박도형
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삼성에스디아이 주식회사
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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
    • C09K11/643—Chalcogenides with alkaline earth metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20—Constructional details
    • H01J11/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J11/42—Fluorescent layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/42—Fluorescent layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

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Abstract

본 발명은 아래의 화학식 1로 표시되는 PDP용 녹색 발광 형광체를 개시한다.The present invention discloses a green light emitting phosphor for PDP represented by Chemical Formula 1 below.

BaAlXO1+1.5x:Mn BaAl X O 1 + 1.5x : Mn

여기서, Al/(Ba+Mn)의 몰비는 12.0 ~ 13.0이고, Mn의 몰비는 0.10 이상 0.20미만이다. 본 발명에 따른 PDP용 녹색 발광 형광체는 종래의 PDP용 녹색 발광 형광체에 비하여 발광휘도 특성이 크게 향상된다.Here, the molar ratio of Al / (Ba + Mn) is 12.0-13.0, and the molar ratio of Mn is 0.10 or more and less than 0.20. The green light emitting phosphor for PDP according to the present invention greatly improves the luminous luminance characteristic as compared to the conventional green light emitting phosphor for PDP.

Description

플라즈마 디스플레이 패널용 녹색발광형광체{Green Emitting Phosphor for Plasma Display Panel}Green Emitting Phosphor for Plasma Display Panel

도 1은 본 발명에 따른 BaAlXO1+1.5x:Mn PDP용 녹색 발광 형광체에 있어서 Al/(Ba+Mn)의 몰비 및 Mn의 몰비에 따른 상대휘도의 변화를 나타낸 그래프이다.1 is a graph showing a change in relative luminance according to the molar ratio of Al / (Ba + Mn) and the molar ratio of Mn in the BaAl X O 1 + 1.5x : Mn PDP green light emitting phosphor according to the present invention.

본 발명은 플라즈마 디스플레이 패널(이하, PDP)에 적용될 수 있는 녹색발광 형광체에 관한 것으로서, 보다 상세하게는 발광휘도가 향상된 PDP용 녹색발광 형광체에 관한 것이다. The present invention relates to a green light emitting phosphor that can be applied to a plasma display panel (hereinafter referred to as PDP), and more particularly, to a green light emitting phosphor for PDP with improved luminance.

형광체라 함은 에너지 자극에 의해 온도방사 이외의 원인으로 발광하는 성질을 지니는 물질을 의미하며, 오늘날 실용화되고 있는 대부분의 형광체는 천연산의 광물보다는 공업적 기술에 의해 인위적으로 합성된 것이 일반적이다.Phosphor refers to a material having a property of emitting light due to energy stimulation other than temperature radiation, and most of the phosphors that are practically used today are artificially synthesized by industrial technology rather than minerals of natural acid.

형광체는 일반적으로 형광램프, 형광수은램프, 복사용 램프 등과 같은 광원용; 음극선관, 전계발광소자, 플라즈마 디스플레이 패널 등과 같은 표시소자; 및 X선 증감지, 신틸레이터(scintillater) 등과 같은 검지용 기기등에 사용되고 있으며 새로운 멀티미디어 기기의 개발과 더불어 향후에도 다양한 용도에 이용될 전망이 다. Phosphors are generally used for light sources such as fluorescent lamps, fluorescent mercury lamps, radiation lamps and the like; Display elements such as cathode ray tubes, electroluminescent devices, plasma display panels, and the like; It is used in detection devices such as X-ray sensitizer and scintillater, and is expected to be used for various purposes in the future with the development of new multimedia devices.

상기와 같은 형광체는 적용되는 기기가 노출되는 광원의 파장대에서 여기하는 특성을 갖는 것으로 선택되어야 하며, 각 적용 기기에 알맞는 전류포화특성, 열화특성, 발광휘도, 색순도, 잔광특성, 구동전압, 고전류밀도하에서의 저항력 및 기타 물성이 바람직하게 갖추어져야 한다. Such phosphors should be selected to have the characteristics of excitation in the wavelength range of the light source to which the applied device is exposed, the current saturation characteristics, deterioration characteristics, luminous luminance, color purity, afterglow characteristics, driving voltage, high current suitable for each application equipment Resistance and other physical properties under density should preferably be provided.

그런데 PDP용 녹색 발광 형광체로서 현재 대부분의 경우 Zn2SiO5:Mn 형광체가 사용되고 있다. 이는 Zn2SiO5:Mn 형광체의 경우 색좌표의 이동이 용이하며 Mn의 양에 따라 잔광시간을 조절하기 용이하기 때문이다. 하지만 이 형광체는 구동전압을 높여야 하며 발광휘도를 향상시키기 어려운 문제점이 있다.However, in most cases, Zn 2 SiO 5 : Mn phosphor is used as a green light emitting phosphor for PDP. This is because, in the case of Zn 2 SiO 5 : Mn phosphor, color coordinates are easy to move and afterglow time is easily adjusted according to the amount of Mn. However, this phosphor has a problem that it is difficult to increase the driving voltage and improve the luminance of light.

따라서, 최근 BaAl12O19:Mn 형광체가 고휘도, 짧은 잔광시간, 낮은 구동전압 등의 장점 때문에 PDP용 녹색발광 형광체로서 주목 받고 있다. Therefore, BaAl 12 O 19 : Mn phosphor has recently attracted attention as a green light emitting phosphor for PDP because of its advantages such as high brightness, short afterglow time, and low driving voltage.

일반적으로 BaAlxO1+1.5x:Mn 형광체는 헥사-알루미네이트 구조를 기본구조로 하는 데, 가장 적합한 조성식은 Al = 12인 경우로서 이 때 가장 전형적인 헥사-알루미네이트 구조를 한다. 그런데 BaAlxO1+1.5x:Mn 형광체에 있어서 특정한 첨가물을 첨가하여 발광휘도를 향상시키기 위한 시도가 있다. 그러나, 이 경우 예를 들면 Mg 등이 Ba 좌석에 치환되는 등 격자상수(lattice parameter)는 약간 변화되어 발광휘도 등의 특성이 약간 변화되나 결정구조는 기본적으로 헥사-알루미네이트 구조로 유지되므로 발광휘도를 향상이 미미하다.In general, BaAl x O 1 + 1.5x : Mn phosphors have a hexa-aluminate structure as a basic structure, and the most suitable compositional formula is Al = 12, which has the most typical hexa-aluminate structure. However, there is an attempt to improve the luminance of light emission by adding a specific additive in BaAl x O 1 + 1.5x : Mn phosphor. However, in this case, for example, the lattice parameter is changed slightly, for example, Mg is substituted for the Ba seat, and the light emission luminance is slightly changed, but the crystal structure is basically maintained in the hexa-aluminate structure, so that the luminance is emitted. The improvement is insignificant.

따라서, 본 발명이 이루고자 하는 기술적 과제는 발광휘도가 향상된 PDP용 BaAlxO1+1.5x:Mn 녹색발광 형광체를 제공하는 데 있다.Accordingly, an object of the present invention is to provide a BaAl x O 1 + 1.5x : Mn green light emitting phosphor for PDPs with improved luminance.

상기 기술적 과제를 달성하기 위해서 본 발명은 아래의 화학식 1로 표시되는 PDP용 녹색발광형광체를 제공한다:In order to achieve the above technical problem, the present invention provides a green light emitting phosphor represented by Chemical Formula 1 below:

<화학식 1><Formula 1>

BaAlXO1+1.5x:Mn BaAl X O 1 + 1.5x : Mn

여기서, Al/(Ba+Mn)의 몰비는 12.0 ~ 13.0이고, Ba를 치환하는 Mn의 상대적 양은 0.10 이상 0.20미만이다. Here, the molar ratio of Al / (Ba + Mn) is 12.0-13.0, and the relative amount of Mn which substitutes Ba is 0.10 or more and less than 0.20.

본 발명에 따른 형광체에 있어서, 상기 Al/(Ba+Mn)의 몰비는 12.5인 것이 특히 바람직하다.In the phosphor according to the present invention, the molar ratio of Al / (Ba + Mn) is particularly preferably 12.5.

본 발명에 따른 형광체에 있어서, 상기 Ba를 치환하는 Mn의 상대적 양은 0.15인 것이 특히 바람직하다.In the phosphor according to the invention, it is particularly preferable that the relative amount of Mn replacing Ba is 0.15.

이하, 실시예를 통해 본 발명에 따른 PDP용 녹색발광형광체의 제조방법을 더욱 자세히 설명하고자 하는데, 본 발명의 범위가 하기 실시예에 의하여 제한되는 것이 아님은 물론이다.Hereinafter, a method of manufacturing a green light emitting phosphor for PDP according to the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.

실시예 1  Example 1

Mn의 몰비를 0.10으로 고정한 채 Al/(Ba+Mn)의 몰비가 10.5, 11.0, 11.5, 12.0, 12.5, 13.0으로 변화되도록 BaCO3, Al2O3, MnCO3를 각각 필요량 만큼 칭량하여 건식혼합하였다. 이어서, 분위기를 환원성으로 하기 위해서 H2 5%/N2 95%의 혼합 가스를 주입하면서 상기 혼합물을 1,300℃에서 약 2시간 소성하여 BaAlXO1+1.5x:Mn 녹색발광형광체를 얻었다. Dry mixing by weighing BaCO 3 , Al 2 O 3 , MnCO 3 as necessary to change the molar ratio of Al / (Ba + Mn) to 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, while keeping the molar ratio of Mn at 0.10. It was. Subsequently, in order to reduce the atmosphere, the mixture was calcined at 1,300 ° C. for about 2 hours while injecting a mixed gas of H 2 5% / N 2 95% to obtain BaAl X O 1 + 1.5x : Mn green light emitting phosphor.

이렇게 하여 얻은 형광체의 상대휘도(곡선 a)를 측정하여 첨부한 도 1에 나타냈다. 이때 상대휘도는 녹색 표준 샘플인 일본 Kasei사의 PSS2 녹색 형광체(징크 실리케이트 형광체)와 비교한 것이다. The relative luminance (curve a) of the phosphor thus obtained was measured and shown in FIG. In this case, the relative luminance is compared with the PSS2 green phosphor (ink silicate phosphor) manufactured by Kasei, Japan, which is a green standard sample.

실시예 2  Example 2

Mn의 몰비를 0.15로 고정한 채 Al/(Ba+Mn)의 몰비가 10.5, 11.0, 11.5, 12.0, 12.5, 13.0으로 변화되도록 BaCO3, Al2O3, MnCO3를 각각 필요량 만큼 칭량하여 건식혼합하였다. 이어서, 분위기를 환원성으로 하기 위해서 H2 5%/N2 95%의 혼합 가스를 주입하면서 상기 혼합물을 1,300℃에서 약 2시간 소성하여 BaAlXO1+1.5x:Mn 녹색발광형광체를 얻었다. Dry mixing by weighing BaCO 3 , Al 2 O 3 , MnCO 3 as necessary to change the molar ratio of Al / (Ba + Mn) to 10.5, 11.0, 11.5, 12.0, 12.5, and 13.0, while fixing the molar ratio of Mn to 0.15. It was. Subsequently, in order to reduce the atmosphere, the mixture was calcined at 1,300 ° C. for about 2 hours while injecting a mixed gas of H 2 5% / N 2 95% to obtain BaAl X O 1 + 1.5x : Mn green light emitting phosphor.

이렇게 하여 얻은 형광체의 상대휘도(곡선 b)를 측정하여 첨부한 도 1에 나타냈다. 이때 상대휘도는 녹색 표준 샘플인 일본 Kasei사의 PSS2 녹색 형광체(징크 실리케이트 형광체)와 비교한 것이다. The relative luminance (curve b) of the phosphor thus obtained was measured and shown in FIG. In this case, the relative luminance is compared with the PSS2 green phosphor (ink silicate phosphor) manufactured by Kasei, Japan, which is a green standard sample.

비교예 1  Comparative Example 1

Mn의 몰비를 0.20으로 고정한 채 Al/(Ba+Mn)의 몰비가 10.5, 11.0, 11.5, 12.0, 12.5, 13.0으로 변화되도록 BaCO3, Al2O3, MnCO3를 각각 필요량 만큼 칭량하여 건식혼합하였다. 이어서, 분위기를 환원성으로 하기 위해서 H2 5%/N2 95%의 혼합 가스를 주입하면서 상기 혼합물을 1,300℃에서 약 2시간 소성하여 BaAlXO1+1.5x:Mn 녹색발광형광체를 얻었다. Dry mixing by weighing BaCO 3 , Al 2 O 3 , MnCO 3 as necessary to change the molar ratio of Al / (Ba + Mn) to 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, while keeping the molar ratio of Mn at 0.20 It was. Subsequently, in order to reduce the atmosphere, the mixture was calcined at 1,300 ° C. for about 2 hours while injecting a mixed gas of H 2 5% / N 2 95% to obtain BaAl X O 1 + 1.5x : Mn green light emitting phosphor.

이렇게 하여 얻은 형광체의 상대휘도를 측정하였으나 실시예 1 및 2의 결과와 비교하였을 때 발광휘도 특성이 불량하였으므로 도 1에는 표시하지 않았다.The relative luminance of the phosphor thus obtained was measured, but the emission luminance characteristics were poor when compared with the results of Examples 1 and 2, and thus not shown in FIG. 1.

비교예 2  Comparative Example 2

Mn의 몰비를 0.25로 고정한 채 Al/(Ba+Mn)의 몰비가 10.5, 11.0, 11.5, 12.0, 12.5, 13.0으로 변화되도록 BaCO3, Al2O3, MnCO3를 각각 필요량 만큼 칭량하여 건식혼합하였다. 이어서, 분위기를 환원성으로 하기 위해서 H2 5%/N2 95%의 혼합 가스를 주입하면서 상기 혼합물을 1,300℃에서 약 2시간 소성하여 BaAlXO1+1.5x:Mn 녹색발광형광체를 얻었다. Dry mixing by weighing BaCO 3 , Al 2 O 3 , MnCO 3 as necessary to change the molar ratio of Al / (Ba + Mn) to 10.5, 11.0, 11.5, 12.0, 12.5, and 13.0 while fixing the molar ratio of Mn to 0.25 It was. Subsequently, in order to reduce the atmosphere, the mixture was calcined at 1,300 ° C. for about 2 hours while injecting a mixed gas of H 2 5% / N 2 95% to obtain BaAl X O 1 + 1.5x : Mn green light emitting phosphor.

이렇게 하여 얻은 형광체의 상대휘도를 측정하였으나 실시예 1 및 2의 결과와 비교하였을 때 발광휘도 특성이 불량하였으므로 도 1에는 표시하지 않았다.The relative luminance of the phosphor thus obtained was measured, but the emission luminance characteristics were poor when compared with the results of Examples 1 and 2, and thus not shown in FIG. 1.

도 1을 참조하면, Al/(Ba+Mn)의 몰비의 측면에서 이 몰비가 12.0 ~ 13.0, 더욱 바람직하게는 12.5일 때 BaAlXO1+1.5x:Mn 녹색 발광 형광체의 상대휘도가 가장 우수한 것을 알 수 있다. 또한, Mn의 몰비의 측면에서 이 몰비가 0.10 이상 0.20 미만일 때, 더욱 바람직하게는 0.15일 때 BaAlXO1+1.5x:Mn 녹색 발광 형광체의 상대휘도가 가장 우수한 것을 알 수 있다.Referring to FIG. 1, in terms of the molar ratio of Al / (Ba + Mn), when the molar ratio is 12.0 to 13.0, more preferably 12.5, BaAl X O 1 + 1.5x : Mn green light emitting phosphor has the highest relative luminance. It can be seen that. In terms of the molar ratio of Mn, when the molar ratio is 0.10 or more and less than 0.20, more preferably 0.15, the relative luminance of BaAl X O 1 + 1.5x : Mn green light emitting phosphor is excellent.

더욱 상세하게 설명하면, Al/(Ba+Mn)의 몰비가 12.5이고, Mn의 몰비가 0.15일 때 본 발명에 따른 BaAlXO1+1.5x:Mn 녹색 발광 형광체의 상대휘도는 상기 일본 Kasei사의 PSS2 녹색 형광체(징크 실리케이트 형광체) 보다 약 8% 증가하였다. 같은 조건에서 본 발명에 따른 BaAlXO1+1.5x:Mn 녹색 발광 형광체의 상대휘도는 일본 Kasei사의 바륨 알루미네이트 녹색 발광 형광체에 비하여 약 15% 증가하였다(미도시).In more detail, when the molar ratio of Al / (Ba + Mn) is 12.5 and the molar ratio of Mn is 0.15, the relative luminance of BaAl X O 1 + 1.5x : Mn green light emitting phosphor according to the present invention is Kasei Co., Ltd. It was about 8% more than the PSS2 green phosphor (zinc silicate phosphor). Under the same conditions, the relative luminance of BaAl X O 1 + 1.5x : Mn green light emitting phosphor according to the present invention was increased by about 15% compared to the barium aluminate green light emitting phosphor of Kasei, Japan (not shown).

상기한 바와 같이, 본 발명에 따른 BaAlXO1+1.5x:Mn PDP용 녹색 발광 형광체는 종래의 PDP용 녹색 발광 형광체에 비하여 상대휘도가 크게 향상되었다.As described above, the green light emitting phosphor for BaAl X O 1 + 1.5x : Mn PDP according to the present invention has significantly improved relative luminance as compared to the conventional green light emitting phosphor for PDP.

Claims (3)

아래의 화학식 1로 표시되는 플라즈마 디스플레이 패널(PDP)용 녹색발광형광체:A green light emitting phosphor for a plasma display panel (PDP) represented by Formula 1 below: <화학식 1><Formula 1> BaAlXO1+1.5x:Mn BaAl X O 1 + 1.5x : Mn 여기서, Al/(Ba+Mn)의 몰비는 12.0 ~ 13.0이고, Ba를 치환하는 Mn의 상대적 양은 0.10 이상 0.20미만이다. Here, the molar ratio of Al / (Ba + Mn) is 12.0-13.0, and the relative amount of Mn which substitutes Ba is 0.10 or more and less than 0.20. 제1항에 있어서, 상기 Al/(Ba+Mn)의 몰비는 12.5인 것을 특징으로 PDP용 녹색발광형광체. The green light emitting phosphor of claim 1, wherein the molar ratio of Al / (Ba + Mn) is 12.5. 제1항에 있어서, 상기 Ba를 치환하는 Mn의 상대적 양은 0.15인 것을 특징으로 하는 PDP용 녹색발광형광체. The green light emitting phosphor according to claim 1, wherein the relative amount of Mn replacing Ba is 0.15.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10149776A (en) * 1996-11-18 1998-06-02 Kasei Optonix Co Ltd Fluorescent film for plasma display
JPH1196910A (en) * 1997-09-18 1999-04-09 Fujitsu Ltd Method for forming phosphor layer of plasma display panel
KR20010018053A (en) * 1999-08-17 2001-03-05 김순택 Plasma display panel
KR100343548B1 (en) * 1999-11-16 2002-07-20 한국화학연구원 Barium aluminate phosphors and process for preparing them

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10149776A (en) * 1996-11-18 1998-06-02 Kasei Optonix Co Ltd Fluorescent film for plasma display
JPH1196910A (en) * 1997-09-18 1999-04-09 Fujitsu Ltd Method for forming phosphor layer of plasma display panel
KR20010018053A (en) * 1999-08-17 2001-03-05 김순택 Plasma display panel
KR100343548B1 (en) * 1999-11-16 2002-07-20 한국화학연구원 Barium aluminate phosphors and process for preparing them

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