WO2004076587A1 - 低電圧・高電流密度用緑色発光蛍光体とそれを用いた電界放出型表示装置 - Google Patents
低電圧・高電流密度用緑色発光蛍光体とそれを用いた電界放出型表示装置 Download PDFInfo
- Publication number
- WO2004076587A1 WO2004076587A1 PCT/JP2004/002265 JP2004002265W WO2004076587A1 WO 2004076587 A1 WO2004076587 A1 WO 2004076587A1 JP 2004002265 W JP2004002265 W JP 2004002265W WO 2004076587 A1 WO2004076587 A1 WO 2004076587A1
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- Prior art keywords
- phosphor
- activator
- green light
- current density
- low voltage
- Prior art date
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Classifications
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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
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
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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
- C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
- C09K11/592—Chalcogenides
- C09K11/595—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
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/54—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing 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
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
- C09K11/562—Chalcogenides
- C09K11/565—Chalcogenides with zinc 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
- C09K11/08—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
- C09K11/08—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
- C09K11/7743—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing terbium
- C09K11/77492—Silicates
Definitions
- the present invention relates to a green light emitting phosphor for low voltage and high current density, and a light emitting device using the same.
- display devices which are the core devices of digital networks, are required to have larger screens, higher definition, and compatibility with various sources such as computers.
- a field emission display device using an electron-emitting device such as a field emission cold-cathode device has a large screen and a thin screen capable of displaying various types of information with high precision and high definition.
- FED field emission display device
- an electron-emitting device such as a field emission cold-cathode device
- FED has the same basic display principle as a cathode ray tube (CRT), and emits light by exciting a phosphor with an electron beam.
- the acceleration voltage (excitation voltage) of the electron beam is 3 to 15 kV, which is lower than that of a CRT, and the current density of the electron beam is higher. Research on the body has not always been sufficiently advanced.
- FEDs are classified into two types: high-voltage FEDs with an excitation voltage of 5 kV to 15 kV, and low-voltage FEDs with an excitation voltage of less than 5 kV. It is considered that the emission characteristics of the phosphor are close to the emission characteristics of the CRT, but there is not enough knowledge about the emission characteristics of the phosphor under high current density excitation. At the moment, no sight was available.
- the phosphor constituting the fluorescent film is required to be resistant to the high current density electron beam.
- the crystal structure of the green luminescent zinc sulfide phosphor (ZnS: Cu, Au, A1 (Au is optional)) is changed from cubic to hexagonal.
- hexagonal zinc sulfide phosphor is effective in suppressing luminance degradation due to a high current density electron beam, but its luminescent color shifts to shorter wavelengths by using a hexagonal crystal structure. There was a problem of deviation. Since the variation of the emitted color is remarkable in the green luminescent zinc sulfide phosphor, it is strongly demanded to realize a green luminescent phosphor having high brightness and high color purity for FED.
- the present invention has been made to address such a problem, and has been made to improve the emission color of a green light emitting phosphor used in a display device such as a field emission display device (FED), and to provide a sufficient light emission.
- the purpose is to improve luminance while maintaining chromaticity.
- the display characteristics such as color reproducibility and reliability have been improved in order to respond to the high current density of the electron beam that excites the phosphor film. It aims to provide a field emission display (FED).
- a first aspect of the present invention is a green light emitting phosphor for low voltage and high current density, wherein (a) a zinc silicate phosphor using manganese as an activator, and (b) a rare earth silicate containing terbium as an activator. And (c) at least one phosphor selected from a zinc sulfide phosphor having a hexagonal crystal structure using copper and aluminum as activators.
- the second embodiment of the present invention comprises (a) a zinc silicate phosphor using manganese as an activator, (b) a rare earth silicate phosphor using terbium as an activator, and (c) copper and aluminum.
- a green light emitting phosphor for low voltage and high current density characterized by comprising at least two kinds of phosphors selected from zinc sulfide phosphors having a hexagonal crystal structure as an activator.
- a third aspect of the present invention is that (a) a zinc silicate phosphor using manganese as an activator, (b) a rare earth silicate phosphor using terbium as an activator, and (c) copper and aluminum oxide. And a zinc sulfide phosphor having a hexagonal crystal structure and an activator as the activator, which is a green light-emitting phosphor for low voltage and high current density.
- a fourth aspect of the present invention is a field emission display device, comprising: a phosphor film including a blue light-emitting phosphor layer, a green light-emitting phosphor layer, and a red light-emitting phosphor layer; and an accelerating voltage of 15 k applied to the phosphor film.
- An electron source which emits light by irradiating an electron beam having a voltage of not more than V and a current density of not less than 1 ⁇ A / cm 2, and an envelope for vacuum-sealing the electron source and the fluorescent film.
- the green light emitting phosphor layer includes the green light emitting phosphor for low voltage and high current density described above.
- FIG. 1 is a cross-sectional view showing a configuration example of a field emission display (FED) according to an embodiment of the present invention.
- FED field emission display
- a first embodiment of the present invention is a green light-emitting phosphor for low voltage and high current density, (a) a manganese-activated zinc silicate phosphor, and (b) a terbium-activated rare earth silicate phosphor, (C) It is composed of one kind of phosphor selected from copper oxidized zinc sulfide phosphor having a hexagonal crystal structure. This phosphor emits green light when irradiated with an electron beam having an accelerating voltage of 15 kV or less (for example, 3 to 15 kV) and a current density of 1 ⁇ AZ cm 2 or more, and emits electric field. It is suitably used as a phosphor for a type display device (FED).
- FED type display device
- the second embodiment is a green light-emitting phosphor for low voltage and high current density as in the first embodiment, and comprises (a) a manganese-activated zinc silicate phosphor, and (b) a terbium-containing phosphor. It is composed of an active rare earth silicate phosphor and (c) two kinds of phosphors selected from copper and aluminum activated zinc sulfide phosphors having a hexagonal crystal structure. This phosphor also emits green light when irradiated with an electron beam with an accelerating voltage of 15 kV or less and a current density of 1 ⁇ A / cm 2 or more, and is used as a phosphor for FED. .
- a green light-emitting phosphor emitting green light for low voltage and high current density (a) a manganese-activated zinc silicate phosphor, (b) a terbium-activated rare earth silicate phosphor, and (c) It consists of three types of phosphors, copper and aluminum activated zinc sulfide phosphors, which have a hexagonal crystal structure. This phosphor is also suitable as a phosphor for FED.
- (a) a manganese-activated zinc silicate phosphor and (b) a terbium-activated zinc silicate are used to improve chromaticity and achieve higher luminance.
- the content ratio of at least one green phosphor to at least one of the green light-emitting phosphors should be equal to or more than (c) the content ratio of hexagonal copper and aluminum-activated zinc sulfide phosphor. desirable.
- (a) manganese activated zinc silicate phosphor represented by the general formula: Z n 2 S i O 4 : phosphor having a substantially represented compositions are in M n and the like.
- the activation amount of Mn is 0.1 to 15 with respect to the phosphor matrix (Zn 2 SiO 4 ) in order to obtain good emission chromaticity and high luminance as a green phosphor. It is preferable to be in the range of mol%.
- terbium-activated yttrium silicate phosphor examples include a phosphor having a composition substantially represented by the general formula: Y 2 SiO 5 : Tb.
- the activation amount of Tb is 0.1 to 20 mol% with respect to the phosphor base material (Y 2 SiO 5 ) in order to obtain good emission chromaticity and high luminance as a green phosphor. It is preferable to set the range.
- manganese activated zinc silicate phosphor is a component (Z n 2 S i O 4 : M n), and, (b) terbium-activated silicate I Tsu tri um phosphor component (Y 2 S i O 5 : T b) can be produced by any known calcination method.
- each raw material powder is weighed so as to have the above-described composition, and these are thoroughly mixed with a flux using a pole mill or the like. At 1200-1400 ° C for 2-6 hours.
- the raw material powders are not limited to oxides, but carbonates, nitrates, and the like that can be easily decomposed into oxides by heating. Oxalates, hydroxides and the like can be used.
- the obtained fired product is thoroughly washed with pure water (including hot pure water) to remove unnecessary soluble components, and the washed fired material is washed. After filtration and drying, it is placed in an alumina crucible and baked in a reducing atmosphere at a temperature of 1200 to 1500 ° C for 2 to 6 hours. Then, after finely pulverizing the calcined product, it is washed with pure water to remove unnecessary soluble components, and further filtered and dried to obtain a target phosphor.
- pure water including hot pure water
- hexagonal copper and aluminum activated zinc sulfide phosphors include phosphors having a composition substantially represented by the general formula: ZnS: Cu, A1.
- the hexagonal zinc sulfide phosphor has excellent resistance to deterioration based on its crystal structure. It is possible to suppress excessive luminance deterioration and the like.
- the ratio of the hexagonal crystal in the zinc sulfide crystal structure is preferably set to 50% or more. If the proportion of the hexagonal crystal is less than 50%, satisfactory impact resistance to electron beams cannot be obtained.
- the proportion of hexagonal crystals in the crystal structure is preferably at least 80%, more preferably at least 95%, and it is particularly desirable that substantially all of the crystal structure be hexagonal.
- C u is the first activator which forms the luminescence center (main activator), of l X 10- 5 ⁇ l X 1 0- 3 g zinc sulfide lg is a phosphor host It is preferable to contain it in the range. Be less than l X 10- 5 g with respect to the first C u content zinc sulfide lg of a activator, also exceed 1 X 10- 3 g, emission luminance and emission chromaticity Decreases. The content of C u is more preferably in the range of 3 X 10- 5 ⁇ 8 X 10- 4 g zinc sulfide lg, more preferably 5 X10—The range is from 5 to 5X10-4g.
- a 1 is a second activator (co-activator) that is directly excited by an electron beam, and causes the first activator to emit light with the excitation energy of such a second activator. Accordingly, the emission intensity of the zinc sulfide phosphor (for example, ZnS: Cu phosphor) can be increased.
- the content of A 1 is the second activator is preferably contained in the range of lX10- 5 ⁇ 5X10- 3 g zinc sulfide lg is a fluorescent substance matrix. Also the content of A 1 is less than 1X10- 5 g zinc sulfide lg, also beyond the 5Xl (T 3 g, emission luminance decreases also emission chromaticity also deteriorates. Containing A 1 the amount is more preferably to 3X10- 5 ⁇ 3X10- 3 g range zinc sulfide lg, more preferably in the range of 5 ⁇ 10 ⁇ 5 ⁇ 1 ⁇ 10- 3 g.
- the hexagonal copper and aluminum activated zinc sulfide phosphor as the component (c) is produced, for example, as follows.
- a predetermined amount of activator raw material is added to the zinc sulfide raw material, which is the phosphor matrix, and fluxes such as chlorinated realm and magnesium chloride are added as necessary, and these are wet-mixed.
- a phosphor material is dispersed in ion-exchanged water to form a slurry, and an arbitrary amount of activator material and flux are added thereto and mixed with a stirrer. The mixing time is set so that the activator is sufficiently dispersed.
- the slurry containing the phosphor raw material and the activator is transferred to a drying container and dried with a dryer to obtain a phosphor raw material.
- such a phosphor material is charged into a heat-resistant container such as a quartz crucible together with an appropriate amount of sulfur and activated carbon.
- the sulfur is mixed with the dried phosphor raw material using a blender, for example, for about 30 to 180 minutes, and the mixed material is filled in a heat-resistant container and then covered with the surface.
- a sulfurizing atmosphere such as a hydrogen sulfide atmosphere, a sulfur vapor atmosphere, or a reducing atmosphere (for example, an atmosphere of 3 to 5% hydrogen and the remaining nitrogen).
- a sulfurizing atmosphere such as a hydrogen sulfide atmosphere, a sulfur vapor atmosphere, or a reducing atmosphere (for example, an atmosphere of 3 to 5% hydrogen and the remaining nitrogen).
- the firing temperature is preferably in the range of 1050 to 1230 ° C.
- the firing time is preferably 30 to 360 minutes, depending on the firing temperature. If the firing time is too short, a mixed crystal of hexagonal and cubic may be formed. Cooling after firing is preferably rapid cooling to prevent a phase change from hexagonal to cubic.
- the obtained calcined product is washed with ion-exchanged water and the like, dried, and, if necessary, sieved to remove coarse particles, thereby obtaining a hexagonal zinc sulfide phosphor ( Z n S: Cu, A 1) are obtained.
- the green light-emitting phosphor for a display device comprises: (a) a manganese-activated zinc silicate phosphor; and (b) a terbium-activated zinc silicate phosphor. And (c) two or more of the three kinds of hexagonal zinc sulfide phosphors can be obtained by directly mixing them. Then, using such a phosphor mixture or a green light-emitting phosphor composed of one kind of phosphor according to the first embodiment, the green light-emitting phosphor layer is formed by a known slurry method or a printing method. Can be formed.
- the luminance of the green light-emitting phosphor deteriorates with time.
- the luminance can be improved while satisfying the emission color (emission chromaticity) required for the green emission component for FED while suppressing the light emission. In other words, it is possible to stably obtain high-luminance green light emission having the emission chromaticity required for the green light-emitting component for FED.
- FED field emission display
- FIG. 1 shows the essentials of one embodiment of such a field emission display (FED). It is sectional drawing which shows a part structure.
- FED field emission display
- reference numeral 1 denotes a face plate, which has a phosphor layer 3 formed on a transparent substrate such as a glass substrate 2.
- the phosphor layer 3 has a blue light-emitting phosphor layer, a green light-emitting phosphor layer, and a red light-emitting phosphor layer formed corresponding to pixels, and is separated by a light absorption layer 4 made of a black conductive material. It has a structure.
- the green light-emitting phosphor layer is constituted by the green light-emitting phosphor of the first to third embodiments.
- the blue light emitting phosphor layer and the red light emitting phosphor layer can be composed of various known phosphors, respectively.
- the blue light-emitting phosphor layer, the green light-emitting phosphor layer, the red light-emitting phosphor layer, and the light-absorbing layer 4 that separates the layers are formed sequentially in the horizontal direction.
- the portion where the layer 3 and the light absorbing layer 4 exist is an image display area.
- Various patterns such as a dot shape or a stripe shape can be applied to the arrangement pattern of the phosphor layer 3 and the light absorption layer 4.
- the metal back layer 5 is made of a metal film such as an A1 film, and reflects light traveling in the direction of a rear plate, which will be described later, of the light generated in the phosphor layer 3 to improve the luminance.
- the metal back layer 5 has a function of giving conductivity to the image display area of the face plate 1 to prevent charges from being accumulated, and has a function to prevent an electron source (electron emission source) of the rear plate from being charged. Acts as an electrode. Further, the metal back layer 5 has a function of preventing the gas remaining in the face plate 1 and the vacuum vessel (envelope) from being ionized by an electron beam, thereby preventing the phosphor layer 3 from being damaged by ions generated. In addition, the gas generated from the phosphor layer 3 during use is prevented from being released into the vacuum vessel (envelope), preventing the degree of vacuum from lowering. It also has the effect of doing so.
- a getter film 6 formed of an evaporable getter material made of Ba or the like is formed on the metal back layer 5. The gas generated during use is efficiently adsorbed by the getter film 6.
- the face plate 1 and the rear plate 7 are arranged to face each other, and the space therebetween is hermetically sealed via the support frame 8.
- the support frame 8 is joined to the face plate 1 and the rear plate 7 by a joining material 9 made of flat glass or In or its alloy, and the face plate 1, the rear plate 7 and the support frame are joined together. 8 forms a vacuum container as an envelope.
- the rear plate 7 has a substrate 10 made of an insulating substrate such as a glass substrate or a ceramic substrate, or a Si substrate, and a number of electron-emitting devices 11 formed on the substrate 10. .
- These electron-emitting devices 11 include, for example, a field-emission cold cathode and a surface-conduction electron-emitting device.
- Wiring (not shown) is provided on the surface on which the electron-emitting device 11 of the rear plate 7 is formed. . That is, a large number of electron-emitting devices 11 are formed in a matrix shape in accordance with the phosphor of each pixel, and the wirings that intersect each other drive the matrix-shaped electron-emitting devices 11 line by line. X-Y wiring).
- the support frame 8 is provided with a signal input terminal and a row selection terminal (not shown). These terminals correspond to the cross wiring (X-Y wiring) of the rear plate 7 described above.
- the thin flat plate may cause deflection or the like.
- Reinforcing members (atmospheric pressure support members, spacers) 12 are appropriately arranged between the face plate 1 and the rear plate 7 to prevent such bending and provide strength against atmospheric pressure. May be.
- a green light-emitting fluorescent material Since the green light emitting phosphor for a display device of the present invention is used as the light body layer, it is possible to improve display characteristics such as initial luminance and color reproducibility. As described above, according to the green light-emitting phosphor for low voltage and high current density of the present invention, its emission color can be improved, and luminance can be improved while maintaining sufficient chromaticity. Therefore, by using such a green-emitting phosphor, the display characteristics such as color reproducibility and reliability have been improved while responding to the high current density of the electron beam that excites the phosphor film. It is possible to provide a field emission display (FED).
- FED field emission display
- Examples 1 ⁇ 3 (c) hexagonal zinc sulfide phosphor of (Z ii S: C u, A 1) and (a) manganese activated zinc silicate phosphor (Z n 2 S i O 4 : Mn) and (b) terbium-activated lithium silicate phosphor (Y 2 SiO 5: Tb) were prepared at 100%, respectively, to prepare phosphors.
- phosphor films were formed by the slurry method using the phosphors or the phosphor mixtures obtained in Examples 1 to 10, respectively.
- a phosphor film was formed using a cubic zinc sulfide phosphor (ZnS: Cu, A1).
- the phosphor film is formed by dispersing a phosphor or a phosphor mixture having the composition shown in Table 1 in an aqueous solution containing polyvinyl alcohol or the like to form a slurry. These slurries are applied to a spin coater (spin coater). ) was applied by coating on a glass substrate. Number of rotations of spin coating machine and slurry By adjusting the viscosity, the thickness of each phosphor film was set to 3 ⁇ 10 ⁇ 3 mg / mm 3 .
- Each emission luminance was determined as a relative value when the luminance of the phosphor film according to the comparative example was set to 100.
- Emission chromaticity was measured using Topcon SR-3 as a chromaticity measuring device. The emission chromaticity was measured in a dark room where the chromaticity during emission was not affected externally. Table 1 shows the measurement results of the emission luminance and emission chromaticity.
- the green light-emitting phosphors obtained in Examples 1 to 10 emit an electron beam having a higher current density at a lower accelerating voltage (15 kV or less) than those of the comparative example. It can be seen that the color of light emitted upon irradiation is improved, and that the color has good light emission chromaticity. In addition, it can be seen that the luminance is greatly improved.
- Example 11 A green-emitting phosphor obtained in Example 4, the blue-emitting phosphor (Z n S: A g, A 1 phosphors), and the red light emitting phosphor: the (Y 2 O 2 S E u phosphor) respectively A face plate was formed by forming a phosphor layer on a glass substrate.
- the face plate and a rear plate having a large number of electron-emitting devices were assembled via a support frame, and these gaps were hermetically sealed while being evacuated. It was confirmed that the FED obtained in this way had excellent color reproducibility and exhibited good display characteristics even after driving at room temperature and rated operation for 1000 hours.
- the green light-emitting phosphor for low voltage and high current density of the present invention its emission color can be improved, and luminance can be improved while maintaining sufficient chromaticity. Therefore, by using such a green-emitting phosphor, the display characteristics such as color reproducibility and reliability have been improved while responding to the high current density of the electron beam that excites the phosphor film.
- a field emission display (FED) can be realized.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/546,380 US20060145591A1 (en) | 2003-02-28 | 2004-02-26 | Green light emitting phosphor for low voltage/high current density and field emission type display including the same |
EP04714919A EP1607461A1 (en) | 2003-02-28 | 2004-02-26 | Green light emitting phosphor for low voltage/high current density and field emissiion type display including the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-054732 | 2003-02-28 | ||
JP2003054732A JP2004263068A (ja) | 2003-02-28 | 2003-02-28 | 低電圧・高電流密度用緑色発光蛍光体とそれを用いた電界放出型表示装置 |
Publications (1)
Publication Number | Publication Date |
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WO2004076587A1 true WO2004076587A1 (ja) | 2004-09-10 |
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PCT/JP2004/002265 WO2004076587A1 (ja) | 2003-02-28 | 2004-02-26 | 低電圧・高電流密度用緑色発光蛍光体とそれを用いた電界放出型表示装置 |
Country Status (7)
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US (1) | US20060145591A1 (ja) |
EP (1) | EP1607461A1 (ja) |
JP (1) | JP2004263068A (ja) |
KR (1) | KR20050109512A (ja) |
CN (1) | CN1751109A (ja) |
TW (1) | TW200424282A (ja) |
WO (1) | WO2004076587A1 (ja) |
Families Citing this family (4)
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JP2005239774A (ja) * | 2004-02-24 | 2005-09-08 | Toshiba Corp | 表示装置用緑色発光蛍光体とそれを用いた電界放出型表示装置 |
EP1790707A1 (en) * | 2004-07-23 | 2007-05-30 | Kabushiki Kaisha Toshiba | Phosphor, process for producing phosphor and luminescent device |
CN101870867B (zh) * | 2010-06-29 | 2012-10-03 | 上海科炎光电技术有限公司 | 一种硫化物电子俘获发光材料 |
US20140261080A1 (en) * | 2010-08-27 | 2014-09-18 | Rolls-Royce Corporation | Rare earth silicate environmental barrier coatings |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5790851A (en) * | 1980-11-27 | 1982-06-05 | Mitsubishi Electric Corp | Cathode ray tube |
JPH0652808A (ja) * | 1992-07-31 | 1994-02-25 | Matsushita Electron Corp | カラー受像管 |
JP2002105446A (ja) * | 2000-09-29 | 2002-04-10 | Hitachi Ltd | ディスプレイ装置 |
EP1273645A1 (en) * | 2000-04-11 | 2003-01-08 | Kabushiki Kaisha Toshiba | Phosphor for display and field-emission display |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69532752T2 (de) * | 1994-12-16 | 2005-02-10 | Nippon Carbide Kogyo K.K. | Bei ultraviolettbestrahlung licht emittierende retroreflektierende schicht |
US5788881A (en) * | 1995-10-25 | 1998-08-04 | Micron Technology, Inc. | Visible light-emitting phosphor composition having an enhanced luminescent efficiency over a broad range of voltages |
JP2002280607A (ja) * | 2001-01-10 | 2002-09-27 | Toyoda Gosei Co Ltd | 発光装置 |
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2003
- 2003-02-28 JP JP2003054732A patent/JP2004263068A/ja not_active Abandoned
-
2004
- 2004-02-26 US US10/546,380 patent/US20060145591A1/en not_active Abandoned
- 2004-02-26 WO PCT/JP2004/002265 patent/WO2004076587A1/ja not_active Application Discontinuation
- 2004-02-26 CN CNA2004800047939A patent/CN1751109A/zh active Pending
- 2004-02-26 KR KR1020057015900A patent/KR20050109512A/ko not_active Application Discontinuation
- 2004-02-26 EP EP04714919A patent/EP1607461A1/en not_active Withdrawn
- 2004-02-27 TW TW093105194A patent/TW200424282A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5790851A (en) * | 1980-11-27 | 1982-06-05 | Mitsubishi Electric Corp | Cathode ray tube |
JPH0652808A (ja) * | 1992-07-31 | 1994-02-25 | Matsushita Electron Corp | カラー受像管 |
EP1273645A1 (en) * | 2000-04-11 | 2003-01-08 | Kabushiki Kaisha Toshiba | Phosphor for display and field-emission display |
JP2002105446A (ja) * | 2000-09-29 | 2002-04-10 | Hitachi Ltd | ディスプレイ装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1607461A1 (en) | 2005-12-21 |
KR20050109512A (ko) | 2005-11-21 |
US20060145591A1 (en) | 2006-07-06 |
TW200424282A (en) | 2004-11-16 |
JP2004263068A (ja) | 2004-09-24 |
CN1751109A (zh) | 2006-03-22 |
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