Patent application number | Description | Published |
20080265748 | Oxynitride fluorescent material and light-emitting device - The invention has for its object the provision of an oxynitride fluorescent material has higher emission luminance than conventional rare earth element-activated sialon fluorescent materials. | 10-30-2008 |
20080297031 | Method of manufacturing phosphor, light-emitting device, and image display apparatus - A method of manufacturing a first phosphor of which emission spectrum shape well matches with a color filter of three primary colors of light, a light-emitting device including the first phosphor, and an image display apparatus including the light-emitting device are provided. The light-emitting device includes a semiconductor light-emitting element emitting excitation light and the first phosphor absorbing the excitation light and emitting green light. The first phosphor contains a solid solution of aluminum element and a metal element M selected from the group consisting of Mn, Ce and Eu in crystals of an oxynitride having a β-type Si | 12-04-2008 |
20090129052 | Illuminator with fluorescent substance - An illuminator includes a light emitting light source and a fluorescent substance. The fluorescent substance includes a crystal of nitride or oxy-nitride having a β-type Si | 05-21-2009 |
20090146549 | LIGHT EMITTING DEVICE AND ILLUMINATION DEVICE - An LED with a semiconductor light emitting element that emits a blue or a blue-violet light, and a fluorescent material that absorbs some or all of the light emitted from the element and emits a fluorescent light of a wavelength different from the absorbed light. The fluorescent material is a mixed fluorescent material obtained by mixing a first fluorescent material that emits a blue-green or a green light, a second fluorescent material that has a peak emission wavelength longer than that of the first fluorescent material and emits a green or a yellow-green light, a third fluorescent material that has a 1 peak emission wavelength longer than that of the second fluorescent material and emits a yellow-green, a yellow or a yellow-red light, and a fourth fluorescent material that has a peak emission wavelength longer than that of the third fluorescent material and emits a yellow-red or a red light. | 06-11-2009 |
20090153028 | Fluorescent substance, method for manufacturing the same and image display device - A fluorescent substance includes a crystal of nitride or oxy-nitride having a β-type Si | 06-18-2009 |
20090167153 | Light emitting diode lamp and light emitting device - The present invention aims at providing a white light emitting diode lamp (a bullet type light emitting diode lamp or a chip-type light emitting diode lamp to be mounted on a substrate) and light emitting device with warmness at a higher luminance, and an intermediate color light emitting diode lamp and light emitting device satisfying light emission in diversified color tones at a higher luminance. | 07-02-2009 |
20090272995 | RESIN COMPOSITION FOR OPTICAL SEMICONDUCTOR ELEMENT ENCAPSULATION, AND OPTICAL SEMICONDUCTOR DEVICE PRODUCED BY USING THE SAME - An epoxy resin composition for optical semiconductor element encapsulation includes an epoxy resin (Component (A)) mainly containing an epoxy compound represented by a specific structural formula (1), a curing agent (Component (B)), and at least one of an oxynitride phosphor and a nitride phosphor (Component (C)). Therefore, the phosphor component (C) is uniformly dispersed in the epoxy resin composition without segregation. Thus, the resin composition serves as an excellent optical semiconductor element encapsulation material which has an adequate light diffusion property and a high light transmittance and permits a reduction in internal stress. Therefore, a light emitting diode element encapsulated with the epoxy resin composition is capable of stably emitting light, and satisfactorily performs its functions. | 11-05-2009 |
20100072881 | SIALON PHOSPHOR - A SiAlON phosphor represented by a general formula (1) | 03-25-2010 |
20100164367 | FLUORESCENT SUBSTANCE, METHOD FOR PRODUCING THE SAME, AND LIGHT-EMITTING DEVICE USING THE SAME - The present invention provides a fluorescent substance exhibiting higher brightness as compared to conventional fluorescent substances, a method for producing the same, and a light-emitting device using such a fluorescent substance. Specifically, the fluorescent substance comprises an α-sialon crystal structure having the same crystal structure with an α-type silicon nitride crystal, which includes at least an M(0) element (where M(0) represents one or two elements selected from Sr and La), an M(1) element (where M(1) represents one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb), Si, Al, and nitrogen. | 07-01-2010 |
20100200874 | PHOSPHOR, METHOD FOR PRODUCING THE SAME AND LIGHT-EMITTING DEVICE USING THE SAME - The invention is a phosphor which includes a phosphor material having a composition represented by a general formula: M(0) | 08-12-2010 |
20100283381 | Phosphor and light emitting device - A JEM phase phosphor having superior luminous efficiency is obtained, and a light emitting device is provided, which includes first and second phosphors and in which fluorescence from the first phosphor is not much absorbed by the second phosphor, with the JEM phase phosphor used as a first phosphor. The first phosphor is the JEM phase phosphor having optical absorption of at most 30% at a wavelength in a relation of complementary color to the emission wavelength of the first phosphor. In the light emitting device having a combination of the first phosphor and the second phosphor emitting fluorescence of longer wavelength than the first phosphor, the first phosphor has optical absorption at the emission wavelength of the second phosphor of at most 30%. | 11-11-2010 |
20110175519 | Oxynitride fluorescent material and light-emitting device - An oxynitride fluorescent material includes a JEM phase as a mother crystal and a luminescence center element Ce. The oxynitride fluorescent material has a fluorescence spectrum with a maximum emission wavelength of 420 nm to 500 nm inclusive and an excitation spectrum with a maximum excitation wavelength of 250 nm to 400 nm inclusive. | 07-21-2011 |
20110235309 | ILLUMINATION DEVICE FOR DISPLAY DEVICE, AND DISPLAY DEVICE - An illumination device for a display device, which is formed from a substrate and a plurality of white light-emitting devices disposed on top of the substrate, and can be used as a backlight for a liquid crystal display panel, wherein the white light-emitting devices have a light source and a phosphor that is excited by the light source and emits light, and a fluorescent material with a composition represented by a general formula: M(0) | 09-29-2011 |
20120032579 | Phosphor, production method thereof and light emitting instrument - A light emitting element includes a light-emitting source for emitting light at a wavelength of 330 to 500 nm and a constituent phosphor. The constituent phosphor includes a compound including M, A, Al, O, and N, where M is at least one kind of element selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb, and A is at least one kind of element selected from C, Si, Ge, Sn, B, Ga, In, Mg, Ca, Sr, Ba, Sc, Y, La, Gd, Lu, Ti, Zr, Hf, Ta, and W. | 02-09-2012 |
20120099291 | OXYNITRIDE FLUORESCENT MATERIAL AND LIGHT-EMITTING DEVICE - An oxynitride fluorescent material includes a JEM phase as a mother crystal and a luminescence center element Ce. The oxynitride fluorescent material has a fluorescence spectrum with a maximum emission wavelength of 420 nm to 500 nm inclusive and an excitation spectrum with a maximum excitation wavelength of 250 nm to 400 nm inclusive. | 04-26-2012 |
20120104448 | LIGHT-EMITTING DEVICE - A semiconductor light-emitting device that is high in luminous efficiency and that emits light which is high in color rendering property includes a semiconductor light-emitting element that emits blue light; a green fluorescent substance that absorbs the blue light and emits green light; and an orange fluorescent substance that absorbs the blue light and emits orange light, fluorescence emitted by the green fluorescent substance and the orange fluorescent substance having an emission spectrum that has a peak wavelength of not less than 540 nm and not more than 565 nm and that satisfies the relation of 0.70>PI(90)/PI(MAX)>0.55, where PI(MAX) represents an emission intensity at the peak wavelength, and PI(90) represents an emission intensity at a wavelength 90 nm longer than the peak wavelength. | 05-03-2012 |
20120119234 | PHOSPHOR, METHOD OF MANUFACTURING THE SAME, AND LIGHT-EMITTING DEVICE - The present invention is a phosphor expressed by the general formula (A | 05-17-2012 |
20120262648 | PHOSPHOR AND USE THEREOF - A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: | 10-18-2012 |
20120319155 | LIGHT-EMITTING DEVICE - Disclosed is a light-emitting device that exhibits good color rendering and highly efficiently emits white light in an incandescent bulb color range. The semiconductor light-emitting device ( | 12-20-2012 |
20130207146 | LIGHT-EMITTING DEVICE - There is realized a light-emitting device that emits, with high efficiency, white light with excellent color rendering index in a lamp color region. A light-emitting device ( | 08-15-2013 |
20130277698 | LIGHT-EMITTING DEVICE - There is realized a light-emitting device that emits, with high efficiency, white light with excellent color rendering index. A light-emitting device ( | 10-24-2013 |
20140028179 | PHOSPHOR, PRODUCTION METHOD FOR THE SAME, AND LIGHT-EMITTING DEVICE - A phosphor indicated by general formula Me | 01-30-2014 |
20140028180 | PHOSPHOR, PRODUCTION METHOD FOR THE SAME, AND LIGHT-EMITTING DEVICE - A phosphor with a high light-emitting intensity and indicated by general formula Me | 01-30-2014 |
20140167084 | PHOSPHOR, METHOD FOR PRODUCING THE SAME, AND LUMINESCENT DEVICE USING THE SAME - A blue phosphor having an emission peak wavelength different from that of conventional blue phosphors, a method for producing the same, and a high-intensity luminescent device using the phosphor are provided. The phosphor of the present invention is represented by a general formula Me | 06-19-2014 |
20140307415 | PHOSPHOR, PRODUCTION METHOD FOR THE SAME, AND LIGHT-EMITTING DEVICE - A phosphor with a high light-emitting intensity, indicated by general formula Me | 10-16-2014 |
20140332992 | PRODUCTION METHOD OF PHOSPHOR - A production method of a phosphor includes firing a starting material mixture in a nitrogen atmosphere at a temperature range between 1,500° C. inclusive and 2,200° C. inclusive. The starting material mixture is a mixture of metallic compounds, and is capable of constituting a composition including M, A, Al, O, and N (M is Eu; and A is one kind or two or more kinds of element(s) selected from C, Si, Ge, Sn, B, Ga, In, Mg, Ca, Sr, Ba, Sc, Y, La, Gd, Lu, Ti, Zr, Hf, Ta, and W) by firing. | 11-13-2014 |
20150083966 | FLUOROPHOR AND METHOD FOR PRODUCTION THEREOF AND ILLUMINATOR - A fluorophor includes: α-type sialon crystal which is expressed by a general formula: (Li | 03-26-2015 |