WO2018124858A1 - Phosphor having high color reproducibility coated with 550-600 nm light absorber, and led using same - Google Patents
Phosphor having high color reproducibility coated with 550-600 nm light absorber, and led using same Download PDFInfo
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- WO2018124858A1 WO2018124858A1 PCT/KR2018/000066 KR2018000066W WO2018124858A1 WO 2018124858 A1 WO2018124858 A1 WO 2018124858A1 KR 2018000066 W KR2018000066 W KR 2018000066W WO 2018124858 A1 WO2018124858 A1 WO 2018124858A1
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000006096 absorbing agent Substances 0.000 title claims description 11
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract 2
- 150000001875 compounds Chemical class 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011358 absorbing material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 150000004767 nitrides Chemical group 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 4
- 239000000463 material Substances 0.000 abstract description 18
- 230000031700 light absorption Effects 0.000 abstract description 7
- 239000010419 fine particle Substances 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
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- the present invention relates to a phosphor and an LED (Display) that implement color reproducibility such as high temperature reliability and color purity maintenance.
- the LED can realize various colors by adjusting the composition ratio of the compound semiconductor, so that the three primary colors of RED, GREEN, and BLUE light can be synthesized. Phosphor used for this is used as the main material to realize the white of the LED.
- the LED phosphor absorbs the light emitted from the LED and emits light. When the absorbed light is converted into light of different wavelengths and applied to the blue LED, it can be combined with blue light emitted from the blue LED and light of different colors emitted by the excited fluorescent material to produce a color other than blue. It is. Therefore, the brightness, color rendering, color temperature, etc. of the final LED light source is determined by the light conversion efficiency and the light color of the fluorescent material, so it may be very important to use an appropriate phosphor in an illumination white LED.
- An object of the present invention is to produce a phosphor with a high color reproducibility by selectively absorbing only yellow light by coating on green or red phosphor using an oxide and acetate of 20nm or less having a purple color, which is a complementary color of yellow.
- an object of the present invention is to produce an LED using a high color reproducible phosphor exhibiting a color reproducibility of 100% of DCI and NTSC of 100% or more.
- the present invention comprises the steps of preparing a liquid light absorber comprising hydrothermally treating the particles of less than 20nm of purple selected from the group consisting of Nd-based compounds and oxides, Nb-based compounds and compounds, Co-based compounds and oxides;
- a yellow light absorbing material (Yellow light absorption materials) is coated on a green or red phosphor and used to produce a phosphor exhibiting a DCI superposition ratio of 100% or color gamut of NTSC 100% or more.
- the present invention is characterized by coating the green or red phosphors using an oxide and an acetate of 20 nm or less having a purple color, which is a complementary color of yellow, to selectively absorb only yellow light, thereby improving color reproducibility.
- the coating material uses particles of 0.1 to 50 nm of Nd compounds and oxides, Nb compounds and compounds, Co compounds and oxides. If the particle size is larger than 50 nm, there is a problem of lowering the luminance.
- the coating content of the coating material is 1 to 100% by weight based on 100 weight of the phosphor, and the content of the coating material is less than the above range, the characteristic wavelength light absorption is inadequate, and if the content of the coating material is low, the brightness is reduced.
- the coating method is characterized by uniformly mixing with the phosphor using a liquid light absorber and drying at 80 ⁇ 300 °C. At this time, if the drying temperature is less than 80 °C water or a solvent is present to reduce the fluorescence properties, if the drying temperature is higher than 300 °C to reduce the fluorescent properties due to phosphor degradation.
- the green phosphor is Nitride-based, Silicate-based, the red phosphor is characterized by using the KSF, Sulfide-based.
- the light absorption region of the phosphor according to the present invention is characterized by absorbing yellow light of 560 ⁇ 600nm.
- the phosphor of the present invention is a high color reproducible phosphor, which exhibits a color reproduction ratio of 100% of DCI and NTSC of 100% or more.
- Another aspect of the invention is characterized in that for producing an LED comprising the high color reproducible phosphor.
- the present invention by using the microparticles of 20nm or less, even if a large amount is used, it is possible to minimize the luminance decrease.
- the phosphor of the present invention absorbs unnecessary light in the 560 ⁇ 600nm band is possible to reproduce a high color.
- the phosphor of the present invention is capable of NTSC 100% or more color reproduction and DTI overlap ratio 100%.
- the phosphor of the present invention has an effect of improving reliability and maintaining optical characteristics, and thus, a light emitting device having excellent fluorescent characteristics can be manufactured.
- 1 and 2 are graphs showing the optical property evaluation results of the light absorber of the present invention.
- the DCI overlap ratio may be achieved at 100% and the color gamut of NTSC may be greater than 100%.
- the present invention is characterized in that the color is increased by selectively absorbing only yellow light by coating on green or red phosphors using oxides and acetates of 20 nm or less having a purple color, which is a complementary color of yellow.
- Nd compounds and oxides (best), Nb compounds and compounds, Co compounds and oxides, 0.1-50 nm particles were used. If the particles are larger than this size, the brightness is lowered.
- the content of the coating material was 1 to 100% by weight based on 100 weight of the phosphor.
- the liquid absorber was uniformly mixed with the phosphor and dried at 80 to 300 ° C.
- the drying temperature is lower than 80 ° C, the fluorescent property is reduced due to the presence of moisture or a solvent.
- the drying temperature is higher than 300 ° C, the fluorescent property is reduced due to phosphor degradation.
- Nitride type and Silicate type were used as green phosphors, and KSF and Sulfide type were used as red phosphors.
- the phosphor coated with the light absorbing material of the present invention absorbed the row light of 560-600 nm.
- the wavelength absorption varies depending on the content of the light absorption coating materials.
- Nd-Acetate + Acetic acid + pure water mixture was treated with hydrothermal (Hydro thermal, 120 ⁇ 250 °C) to prepare a highly transparent Nd 2 O 3 Sol of less than 10nm of purple.
- Highly transparent Nd 2 O 3 Sol and the phosphor were uniformly mixed by content, and then uniformly dried at 80 to 300 ° C. while removing H 2 O using an evaporator.
- Phosphor and LED display manufactured according to the present invention can be seen that the high color reproduction is possible by absorbing unnecessary light in the 560 ⁇ 600nm band, NTSC 100% or more color reproduction and DTI overlap ratio 100% is possible.
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Abstract
The present invention is characterized by providing: a phosphor having high color reproducibility, the color reproducibility of which has been increased by coating a violet 0.1-50 nm oxide and acetate, which is a yellow light absorption material, on a green or red phosphor; and a device for manufacturing an LED. According to the present invention, fine particles are used, and thus it is possible to minimize a reduction in luminance even when a large amount is used. The phosphor of the present invention can absorb unnecessary light in the 560-600 nm band to achieve high color reproducibility, and can achieve a color gamut equal to or greater than NTSC 100%, and a DTI redundancy ratio of 100%.
Description
본 발명은 고온 신뢰성 및 색순도 유지 등의 색재현성을 구현한 형광체 및 LED(Display)에 관한 것이다.The present invention relates to a phosphor and an LED (Display) that implement color reproducibility such as high temperature reliability and color purity maintenance.
LED는 화합물 반도체의 조성비를 조절함으로써 다양한 색상 구현이 가능하여 RED, GREEN, BLUE 빛의 삼원색을 합성하여 나타낼 수 있다. 이에 사용되는 형광체가 LED의 백색을 구현하게 하는 주요 소재로 사용되고 있다. LED 형광체는 LED로부터 방출된 광을 흡수하여 빛을 발광하는 역할을 한다. 흡수한 빛을 다른 파장의 빛으로 바꾸어 방출하는 물질로 이를 청색 LED에 적용하면 청색 LED에서 나오는 청색광과 이에 의해 여기된 형광 물질이 방출하는 다른 색의 빛이 조합되어 청색 외에 다른 색을 만들어 낼 수 있는 것이다. 따라서 형광 물질의 광 변환 효율과 광색에 의해 최종 LED광원의 휘도,연색성,색온도 등이 결정되기 때문에 조명용 백색 LED에 있어 적절한 형광체의 사용은 매우 중요하다 할 수 있다.The LED can realize various colors by adjusting the composition ratio of the compound semiconductor, so that the three primary colors of RED, GREEN, and BLUE light can be synthesized. Phosphor used for this is used as the main material to realize the white of the LED. The LED phosphor absorbs the light emitted from the LED and emits light. When the absorbed light is converted into light of different wavelengths and applied to the blue LED, it can be combined with blue light emitted from the blue LED and light of different colors emitted by the excited fluorescent material to produce a color other than blue. It is. Therefore, the brightness, color rendering, color temperature, etc. of the final LED light source is determined by the light conversion efficiency and the light color of the fluorescent material, so it may be very important to use an appropriate phosphor in an illumination white LED.
대부분의 LED가 컬러 필터(Color filter)를 적용한다 하더라도 DCI 중첩비 100%를 만족하기는 어렵고, NTSC의 경우도 OLED나 QDEF 필름을 사용하지 않은 LED용 형광체를 사용해서는 100% 이상의 색재현성을 나타내기가 어렵다.Although most LEDs use color filters, it is difficult to satisfy the DCI overlap ratio of 100%, and NTSC also exhibits over 100% color reproducibility using LED phosphors without OLED or QDEF film. Difficult
기존 재료는 Yellow 파장대를 흡수하는 재료는 많으나 입자 사이즈가 커서 휘도 저하를 크게 발생시켰고, 또한 유기 안료를 사용하여 고온 신뢰성 및 색순도 유지가 어려운 단점이 있었다.Existing materials have many materials that absorb yellow wavelength range, but large particle size has caused a large decrease in luminance, and it is difficult to maintain high-temperature reliability and color purity using organic pigments.
본 발명의 목적은 노란색의 보색인 퍼플 컬러를 가진 20nm 이하의 산화물 및 초산염 등을 이용하여 그린이나 레드 형광체에 코팅하여 노란색 광만 선택적으로 흡수시켜 색재현성을 높인 형광체를 제조하는 것이다.An object of the present invention is to produce a phosphor with a high color reproducibility by selectively absorbing only yellow light by coating on green or red phosphor using an oxide and acetate of 20nm or less having a purple color, which is a complementary color of yellow.
또한 본 발명은 DCI 중첩비 100% 및 NTSC 100% 이상의 색재현율을 나타내는 고색재현성 형광체를 사용하여 LED 를 제조하는 것을 목적으로 한다.In addition, an object of the present invention is to produce an LED using a high color reproducible phosphor exhibiting a color reproducibility of 100% of DCI and NTSC of 100% or more.
본 발명은 Nd계 화합물 및 산화물, Nb계 화합물 및 화합물, Co계 화합물 및 산화물로 이루어진 군으로부터 선택되는 보라색의 20nm 이하의 입자를 수열처리하여 포함하는 액상 흡광제를 제조하는 단계; The present invention comprises the steps of preparing a liquid light absorber comprising hydrothermally treating the particles of less than 20nm of purple selected from the group consisting of Nd-based compounds and oxides, Nb-based compounds and compounds, Co-based compounds and oxides;
상기 액상 흡광제를 그린 또는 레드 형광체와 균일하게 혼합하는 단계;및Uniformly mixing the liquid absorber with a green or red phosphor; and
상기 흡광제와 형광체의 혼합물을 80~300℃에서 건조하여 균일하게 코팅하는 단계;를 포함하는 고색재현성 형광체를 제조하는 것을 특징으로 한다.It characterized in that it comprises a high color reproducible phosphor comprising; drying the mixture of the light absorber and the phosphor at 80 ~ 300 ℃ uniform coating.
본 발명에서는 노란색 흡광제(Yellow light absorption materials)를 그린 또는 레드 형광체에 코팅하여 사용할 경우 DCI 중첩비 100% 달성이나 NTSC 100%이상의 색재현율을 나타내는 형광체를 제조하는 것을 특징으로 한다.In the present invention, when a yellow light absorbing material (Yellow light absorption materials) is coated on a green or red phosphor and used to produce a phosphor exhibiting a DCI superposition ratio of 100% or color gamut of NTSC 100% or more.
본 발명은 노란색의 보색인 퍼플 컬러를 가진 20nm 이하의 산화물 및 초산염등을 이용하여 그린 또는 레드 형광체에 코팅하여, 노란색 광만 선택적으로 흡수시켜서 색재현성을 높인 것을 특징으로 한다.The present invention is characterized by coating the green or red phosphors using an oxide and an acetate of 20 nm or less having a purple color, which is a complementary color of yellow, to selectively absorb only yellow light, thereby improving color reproducibility.
상기 코팅물질은 Nd계 화합물 및 산화물, Nb계 화합물 및 화합물, Co계 화합물 및 산화물의 0.1~50nm 의 입자를 사용한다. 만일 입자 크기가 50nm 를 초과할 클 경우에는 휘도를 저하시키는 문제점이 있다.The coating material uses particles of 0.1 to 50 nm of Nd compounds and oxides, Nb compounds and compounds, Co compounds and oxides. If the particle size is larger than 50 nm, there is a problem of lowering the luminance.
또한 상기 코팅 물질의 코팅 함량은 형광체 100중량 대비 1~100 중량%를 사용하며, 코팅 물질 함량이 상기 범위보다 적으면 특성 파장 광흡수가 미비하고, 많으면 휘도를 저하시킨다.In addition, the coating content of the coating material is 1 to 100% by weight based on 100 weight of the phosphor, and the content of the coating material is less than the above range, the characteristic wavelength light absorption is inadequate, and if the content of the coating material is low, the brightness is reduced.
코팅 방법은 액상 흡광제 사용하여 형광체와 균일하게 혼합하고 80~300℃ 에서 건조하는 것을 특징으로 한다. 이때, 건조 온도가 80℃ 미만이면 수분이나 용제가 존재하여 형광 특성을 감소시키고, 건조 온도가 300℃ 보다 높으면 형광체 열화로 형광 특성을 감소시킨다.The coating method is characterized by uniformly mixing with the phosphor using a liquid light absorber and drying at 80 ~ 300 ℃. At this time, if the drying temperature is less than 80 ℃ water or a solvent is present to reduce the fluorescence properties, if the drying temperature is higher than 300 ℃ to reduce the fluorescent properties due to phosphor degradation.
그린 형광체는 Nitride계, Silicate계를 사용하며, 레드 형광체는 KSF, Sulfide계를 사용하는 것을 특징으로 한다.The green phosphor is Nitride-based, Silicate-based, the red phosphor is characterized by using the KSF, Sulfide-based.
본 발명에 따른 형광체의 광 흡수 영역은 560~600nm 의 옐로우 광을 흡수하는 것을 특징으로 한다.The light absorption region of the phosphor according to the present invention is characterized by absorbing yellow light of 560 ~ 600nm.
또한 본 발명의 형광체는 DCI 중첩비 100% 및 NTSC 100% 이상의 색재현율을 나타내는 것을 특징으로 하는 고색재현성 형광체이다.In addition, the phosphor of the present invention is a high color reproducible phosphor, which exhibits a color reproduction ratio of 100% of DCI and NTSC of 100% or more.
본 발명의 또 다른 측면은 상기 고색재현성 형광체를 포함하는 LED 를 제조하는 것을 특징으로 한다.Another aspect of the invention is characterized in that for producing an LED comprising the high color reproducible phosphor.
본 발명에 따르면 20nm 이하의 미세입자를 사용하여, 많은 양을 사용하더라도 휘도 저하를 최소화할 수 있다.According to the present invention, by using the microparticles of 20nm or less, even if a large amount is used, it is possible to minimize the luminance decrease.
또한 본 발명의 형광체는 560~600nm대의 불필요한 광을 흡수하여 고색재현이 가능하다.In addition, the phosphor of the present invention absorbs unnecessary light in the 560 ~ 600nm band is possible to reproduce a high color.
또한 본 발명의 형광체는 NTSC 100% 이상의 색재현율 및 DTI 중첩비 100% 가능하다. In addition, the phosphor of the present invention is capable of NTSC 100% or more color reproduction and DTI overlap ratio 100%.
또한 본 발명의 형광체는 신뢰성이 향상되며 광특성 유지가 가능한 효과가 있어서, 형광특성이 우수한 발광장치를 제조할 수 있다.In addition, the phosphor of the present invention has an effect of improving reliability and maintaining optical characteristics, and thus, a light emitting device having excellent fluorescent characteristics can be manufactured.
도 1 및 도 2는 본 발명의 흡광체의 광 특성 평가 결과를 나타낸 그래프이다.1 and 2 are graphs showing the optical property evaluation results of the light absorber of the present invention.
본 발명에서는 노란색 흡광제(Yellow light absorption materials)를 그린 또는 레드 형광체에 코팅하여 사용할 경우 DCI 중첩비 100% 달성 및 NTSC 100%이상의 색재현율을 나타낼 수 있다.In the present invention, when yellow light absorbing materials (Yellow light absorption materials) are coated on green or red phosphors, the DCI overlap ratio may be achieved at 100% and the color gamut of NTSC may be greater than 100%.
본 발명은 노란색의 보색인 퍼플 컬러를 가진 20nm 이하의 산화물 및 초산염 등을 이용하여 그린 또는 레드 형광체에 코팅하여 노란색 광만 선택적으로 흡수시켜 색재현성을 높인 것을 특징으로 한다.The present invention is characterized in that the color is increased by selectively absorbing only yellow light by coating on green or red phosphors using oxides and acetates of 20 nm or less having a purple color, which is a complementary color of yellow.
1. 코팅물질1. Coating material
Nd계 화합물 및 산화물(가장 우수), Nb계 화합물 및 화합물, Co계 화합물 및 산화물, 0.1~50nm 입자를 사용하였다. 입자가 상기 크기보다 클 경우 휘도를 저하시킨다.Nd compounds and oxides (best), Nb compounds and compounds, Co compounds and oxides, 0.1-50 nm particles were used. If the particles are larger than this size, the brightness is lowered.
2. 코팅물질의 함량2. Content of coating material
코팅물질의 함량은 형광체 100중량 대비 1~100 중량% 를 사용하였다.The content of the coating material was 1 to 100% by weight based on 100 weight of the phosphor.
코팅물질의 함량이 상기 범위보다 적으면 특정 파장의 광흡수가 미비하고, 코팅물질의 함량이 많으면 휘도를 저하시킨다.When the content of the coating material is less than the above range, light absorption of a specific wavelength is insufficient, and when the content of the coating material is high, the luminance is lowered.
3. 코팅 방법3. Coating method
액상 흡광제를 사용하여 형광체와 균일하게 혼합하고 80~300℃에서 건조시켰다. 이때 건조 온도가 80℃ 보다 낮으면 수분이나 용제가 존재하여 형광 특성이 감소되고, 건조 온도가 300℃보다 높으면 형광체 열화로 형광 특성 감소하게 된다.The liquid absorber was uniformly mixed with the phosphor and dried at 80 to 300 ° C. In this case, when the drying temperature is lower than 80 ° C, the fluorescent property is reduced due to the presence of moisture or a solvent. When the drying temperature is higher than 300 ° C, the fluorescent property is reduced due to phosphor degradation.
본 발명에서는 그린 형광체로 Nitride계, Silicate계를 사용하였으며, 레드 형광체로 KSF, Sulfide계를 사용하였다.In the present invention, Nitride type and Silicate type were used as green phosphors, and KSF and Sulfide type were used as red phosphors.
4. 흡수 영역 4. Absorption area
본 발명의 광흡수 물질이 코팅된 형광체는 560~600nm 의 열로우 광을 흡수하였다.The phosphor coated with the light absorbing material of the present invention absorbed the row light of 560-600 nm.
5. 흡광제(Light absorption coating materials)의 함량에 따라 파장 흡수가 다르다.5. The wavelength absorption varies depending on the content of the light absorption coating materials.
이하에서는 구체적인 실시예를 통하여 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to specific examples.
실시예 1. 고투명 Nd2O3 Sol 제조Example 1 Preparation of Highly Transparent Nd 2 O 3 Sol
Nd-Acetate + Acetic acid + pure water 혼합액을 수열(Hydro thermal, 120 ~ 250℃)처리하여 보라색의 10nm이하의 고투명 Nd2O3 Sol 을 제조하였다.Nd-Acetate + Acetic acid + pure water mixture was treated with hydrothermal (Hydro thermal, 120 ~ 250 ℃) to prepare a highly transparent Nd 2 O 3 Sol of less than 10nm of purple.
실시예 2. 코팅 및 건조Example 2. Coating and Drying
고투명 Nd2O3 Sol과 형광체를 함량별로 균일 혼합 후 증발기를 이용하여 H2O 를 제거하면서 80~300℃ 에서 균일 코팅 건조하였다.Highly transparent Nd 2 O 3 Sol and the phosphor were uniformly mixed by content, and then uniformly dried at 80 to 300 ° C. while removing H 2 O using an evaporator.
도 1 및 도 2에서는 광 특성 평가 결과를 나타내었다.1 and 2 show the optical property evaluation results.
본 발명에 따라 제조된 형광체 및 LED 디스플레이는 560~600nm 대의 불필요한 광을 흡수하여 고색재현이 가능하고, NTSC 100%이상의 색재현율 및 DTI 중첩비 100% 가능함을 알 수 있다.Phosphor and LED display manufactured according to the present invention can be seen that the high color reproduction is possible by absorbing unnecessary light in the 560 ~ 600nm band, NTSC 100% or more color reproduction and DTI overlap ratio 100% is possible.
Claims (7)
- 노란색 흡광제(Yellow light absorption materials)인 0.1~50nm 의 보라색 산화물 및 초산염이 그린 또는 레드 형광체에 코팅되어 색재현성을 높인 고색재현성 형광체.A high color reproducible phosphor coated with green or red phosphors coated with yellow light absorbing materials (0.1-50 nm of purple oxide and acetate) to increase color reproducibility.
- 제1항에 있어서,The method of claim 1,상기 보라색 산화물은 Nd계 화합물 및 산화물, Nb계 화합물 및 산화물, Co계 화합물 및 산화물인 것을 특징으로 하는 고색재현성 형광체.The purple oxide is a high color reproducible phosphor, characterized in that the Nd-based compound and oxide, Nb-based compound and oxide, Co-based compound and oxide.
- 제1항에 있어서,The method of claim 1,상기 코팅된 노란색 흡광제의 함량은 형광체 100중량 대비 1~100 중량%인 것을 특징으로 하는 고색재현성 형광체.The content of the coated yellow light absorber is high color reproducible phosphor, characterized in that 1 to 100% by weight based on 100 weight of the phosphor.
- 제1항에 있어서,The method of claim 1,상기 그린 형광체는 Nitride계, 또는 Silicate계이며, 레드 형광체는 KSF, 또는 Sulfide계인 것을 특징으로 하는 고색재현성 형광체.The green phosphor is Nitride-based, or Silicate-based, the red phosphor is KSF, or Sulfide-based high color reproducible phosphor.
- 제1항에 있어서,The method of claim 1,상기 형광체는 DCI 중첩비 100% 및 NTSC 100% 이상의 색재현율을 나타내는 것을 특징으로 하는 고색재현성 형광체.The phosphor is a high color reproducible phosphor, characterized in that the color reproduction ratio of 100% DCI and NTSC 100% or more.
- 제1항 내지 제5항 중 어느 한 항의 고색재현성 형광체를 포함하는 LED.An LED comprising the high color reproducible phosphor of any one of claims 1 to 5.
- Nd계 화합물 및 산화물, Nb계 화합물 및 화합물, Co계 화합물 및 산화물로 이루어진 군으로부터 선택되는 보라색의 20nm 이하의 입자를 수열처리하여 포함하는 액상 흡광제를 제조하는 단계;Preparing a liquid light absorber comprising hydrothermally treating the particles having a diameter of 20 nm or less selected from the group consisting of Nd-based compounds and oxides, Nb-based compounds and compounds, Co-based compounds and oxides;상기 액상 흡광제를 그린 또는 레드 형광체와 균일하게 혼합하는 단계;및Uniformly mixing the liquid absorber with a green or red phosphor; and상기 흡광제와 형광체의 혼합물을 80~300℃에서 건조하여 균일하게 코팅하는 단계;를 포함하는 고색재현성 형광체의 제조방법.Drying the mixture of the light absorber and the phosphor at 80 ~ 300 ℃ uniform coating; manufacturing method of a high color reproducible phosphor comprising.
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| KR1020180000242A KR102161109B1 (en) | 2016-12-30 | 2018-01-02 | HIGH COLOR REPRODUCIBILITY PHOSPHOR COATED WITH 550 ~ 600nm LIGHT ABSORBING AGENT AND LED USING THE SAME |
| KR10-2018-0000242 | 2018-01-02 |
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