Class / Patent application number | Description | Number of patent applications / Date published |
313499000 | Semiconductor depletion layer type | 82 |
20080197764 | Electroluminescence Light Source - Electroluminescence light source having a transparent substrate ( | 08-21-2008 |
20080203899 | ELECTRO-LUMINESCENT DISPLAY WITH IMPROVED EFFICIENCY - A full-color, light-emitting display device has improved efficiency with a large color gamut. The full-color, light-emitting display device has a plurality of pixels, each pixel having four or more colors of light-emitting elements. Three of the colors of light-emitting elements emits red, green, and blue light, and at least one of the colors of light-emitting elements emitting light is perceived to be within the gamut defined by the chromaticity coordinates of the red, green, and blue colored light-emitting elements. The light-emitting elements for emitting red, green, and blue colors of light each comprise a different species of inorganic light-emitting particles for emitting a different color of light. Each of the red, green, and blue species produces light having an emission spectrum with a full-width, half-maximum of less than or equal to 70 nm. | 08-28-2008 |
20080238295 | ELECTROLUMINESCENT DEVICE, METHOD OF MANUFACTURING THE DEVICE, ELECTRONIC DEVICE, THIN-FILM STRUCTURE, AND METHOD OF FORMING THIN FILM - An electroluminescent device includes a substrate having a bank-forming face on one surface thereof, a bank formed on the bank-forming face, and a thin-film layer constituting an electroluminescent element at a region surrounded by the bank. The thin-film layer is formed by filling the region surrounded by the bank with a thin-film material liquid and solidifying the liquid. The bank-forming face and a contact face with the thin-film layer have curved surfaces so that the central portions thereof are convexed toward the substrate side. | 10-02-2008 |
20090021139 | LIGHTING DEVICE - Lighting devices comprising first and second solid state light emitters and an optical device (e.g., optical fiber). If the emitters are illuminated, ( | 01-22-2009 |
20090058260 | Organic light-emitting device comprising buffer layer and method for fabricating the same -
Disclosed herein are an organic light-emitting device having a structure formed by the sequential deposition of a substrate, a first electrode, at least two organic layers and a second electrode, in which the organic layers include a light-emitting layer, and one of the organic layers, which is in contact with the second electrode, is a buffer layer comprising a compound represented by the following formula 1, as well as a fabrication method thereof:
| 03-05-2009 |
20090079326 | Light-Emitting Element, Light-Emitting Device, and Electronic Device - It is an object of the present invention to provide a light-emitting element with high light emission efficiency. It is another object of the present invention to provide a light-emitting element with a long lifetime. A light-emitting device is provided, which includes a light-emitting layer, a first layer, and a second layer between first electrode and a second electrode, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and a light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode. | 03-26-2009 |
20090243465 | LIGHT-EMITTING DEVICE - A light-emitting device having an anode and a cathode is disclosed herein. An embodiment of the light-emitting device comprises a first lead connected to the anode of the light-emitting device and a second lead connected to the cathode of the light-emitting device. The first lead has a first bend, wherein the direction of the first bend indicates that the first lead is connected to the anode. The second lead has a second bend, wherein the direction of the second bend indicates that the second lead is connected to the cathode. | 10-01-2009 |
20100164364 | LIGHT EMITTING DEVICE - A light emitting apparatus ( | 07-01-2010 |
20100314991 | LIGHT-EMITTING DEVICE HAVING A PATTERNED SUBSTRATE AND THE METHOD THEREOF - This disclosure provides a light-emitting device including a patterned substrate and the manufacturing method thereof. The patterned substrate has a plurality of depressions and/or extrusions for scattering light emitted from a light-emitting layer. Each of the plurality of depressions and/or extrusions comprises a top portion, a bottom portion, and a sidewall portion enclosing the top portion and the bottom portion, and at least part of the sidewall portion comprises a curve. In a preferred embodiment, the light-emitting device further comprises a rough surface formed on at least one of the top portion, the bottom portion, and the sidewall portion. | 12-16-2010 |
20100320899 | ELECTRO-LUMINESCENT DEVICE INCLUDING METAL-INSULATOR TRANSITION LAYER - Provided is an electro-luminescent device (ELD) including a metal-insulator transition (MIT) layer. The ELD includes: a substrate; a EL phosphor layer positioned on the substrate and comprising luminescent center ions generating light; the MIT layer disposed on a surface of the EL phosphor layer and being abruptly changed from an insulator to a metal according to a variation of a voltage; a first insulator adhered to the MIT layer to distribute a voltage applied from an external source; and a second insulator disposed on the other side of the EL phosphor layer. | 12-23-2010 |
20110006667 | SECURITY AND/OR VALUABLE DOCUMENT HAVING A TYPE II SEMICONDUCTOR CONTACT SYSTEM - The invention relates to a security and/or value document having a security feature, to an ink for making the security feature, to a method for making such a security and/or value document, and to a method for verifying such a security and/or value document. | 01-13-2011 |
20110006668 | Lighting Structures Including Diffuser Particles Comprising Phosphor Host Materials - A lighting structure may include a semiconductor light emitting device configured to generate light responsive to an electrical signal applied thereto. In addition, an encapsulating material may be configured to transmit light generated by the semiconductor light emitting device, and the encapsulating material may include yttrium aluminum garnet (YAG) diffuser particles and phosphor particles therein. More particularly, the yttrium aluminum garnet (YAG) diffuser particles and the phosphor particles may have different compositions. | 01-13-2011 |
20110025190 | LUMINOUS DEVICE - The present invention relates to the field of luminous devices, in particular to a luminous device ( | 02-03-2011 |
20110057557 | PROJECTION LED MODULE AND METHOD OF MAKING A PROJECTION LED MODULE - A projection light emitting diode (LED) module is provided. According to one embodiment, the LED module converts LED light to polarized light and emits the polarized light. One embodiments of the LED module includes a reflective polarizer positioned in a light emission path of the LED light, wherein the reflective polarizer polarizes the LED light, and the reflective polarizer further transmits the first polarization state light and reflects the second polarization state light; and a polarization conversion element bonded to the reflective polarizer, the polarization conversion element positioned between the LED light and the reflective polarizer, wherein the polarization conversion element coverts the second polarization state light to a desired polarization state light. A reflecting cup may be provided to increase the reflection of light back through the polarization conversion element and the reflective polarizer. The LED module may be configured for use with commercially available LED packages. | 03-10-2011 |
20110095675 | LIGHT EMITTING DEVICE AND ELECTRONIC DEVICE - A light emitting device includes a light emitting element having a first electrode layer, a second electrode layer, and a light emitting layer disposed between the first electrode layer and the second electrode layer above a substrate, a reflection layer which is disposed between the substrate and the first electrode layer and reflects light emitted by the light emitting layer toward the light emitting layer, a semi-transparent semi-reflective layer which is disposed above the light emitting layer and reflects a portion of light emitted by the light emitting layer toward the light emitting layer, and transmits the other portion of the light, and a reflection enhancing layer which is disposed on the semi-transparent semi-reflective layer and includes a first layer having a refractive index higher than a refractive index of the semi-transparent semi-reflective layer, the first layer being in contact with the semi-transparent semi-reflective layer. | 04-28-2011 |
20120104935 | WHITE LIGHT ELECTROLUMINESCENT DEVICES WITH ADJUSTABLE COLOR TEMPERATURE - Solid state lighting devices include a first luminescent element ( | 05-03-2012 |
20130134867 | LIGHT EMITTING DIODE WITH IMPROVED LIGHT EXTRACTION EFFICIENCY - Disclosed is a light emitting diode (LED) having improved light extraction efficiency. The LED includes a light emitting structure which is positioned on a substrate and has a first conductive type semiconductor layer, an active layer and a second conductive type semiconductor layer. A first electrode pad is electrically connected to the first conductive type semiconductor layer. A second electrode pad is positioned on the substrate. An insulating reflective layer covers a portion of the light emitting structure, and is positioned under the second electrode pad, so that the second electrode pad is spaced apart from the light emitting structure. At least one upper extension is connected to the second electrode pad to be electrically connected to the second conductive type semiconductor layer. Further, a pattern of light extraction elements is positioned on the second conductive type semiconductor layer. | 05-30-2013 |
20150334805 | ELECTROLUMINESCENT DEVICES HAVING NANOSTRUCTURE-FILM ELECTRODE(S) - An electroluminescent (EL) device is described, comprising an EL material, an electrode and nanostructures. The nanostructures may form an interconnected network, and may be employed in the EL material and/or in the electrode. A second electrode is also described, wherein an electric field formed between the two electrodes excites phosphors in the EL material to produce light. | 11-19-2015 |
313500000 | Matrix or array | 20 |
20080218058 | Organic light emitting diode display device - A passivation layer formed over and under a first pixel electrode is provided to prevent corrosion of the first pixel electrode of an organic light emitting diode (OLED) display device. The OLED display device includes: a substrate, a first passivation layer disposed on the substrate, a first pixel electrode disposed over the first passivation layer, a second passivation layer disposed over the first pixel electrode, a second pixel electrode disposed over the second passivation layer, an organic layer including an emission layer disposed over the second pixel electrode, and a counter electrode disposed over the organic layer. Each of the first and second passivation layers is formed of one selected from the group consisting of NiCr, Al | 09-11-2008 |
20080224595 | Organic EL device - The present invention provides a high-efficiency organic EL device that can be fabricated by a simple process and that can prevent color shift arising from variations in film thickness. The organic EL light-emitting device includes a plurality of independent light-emitting elements that constitute first, second, and third emission color subpixels. The light-emitting elements constituting the first emission color subpixels and the second emission color subpixels have a semitransparent reflective layer between a transparent substrate and a transparent electrode, and this semitransparent reflective layer is configured so as to function with the reflective electrode as a resonator for the light of the emission colors. The light-emitting elements constituting the third emission color subpixels additionally have a color conversion layer between the transparent substrate and the transparent electrode. | 09-18-2008 |
20080231168 | DISPLAY SUBSTRATE, ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE, AND MANUFACTURING METHOD THEREOF - A display substrate, an organic light emitting diode display device having the same, and a manufacturing method thereof are disclosed. The display substrate includes a first pixel separating portion and a second pixel separating portion extending from the pixel separating portion and disposed around a pixel portion. Therefore, the number of processes for forming the organic light emitting diode display device can be reduced, and corrosion of a first electrode of the organic light emitting diode display device can be prevented. | 09-25-2008 |
20080231169 | LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING THE SAME - By using a light emitting device including a substrate and a light emitting unit, the light emitting unit including: a plurality of light emitting elements that are mounted on substrate and electrically connected to external electrodes; a first sealing member layer containing a first fluorescent material, formed to cover light emitting elements; and a second sealing member layer containing a second fluorescent material, formed on first sealing member layer, as well as a method for manufacturing thereof, it becomes possible to provide a light emitting device capable of suppressing color shifts and the like by the fluorescent materials, and of being easily manufactured, as well as a method for manufacturing the same. | 09-25-2008 |
20080238296 | ELECTRON-EMITTING DEVICE AND DISPLAY APPARATUS - An electron-emitting device includes a first electrode; an insulating film that is disposed on the first electrode, includes at least one step in an upper surface thereof, and includes a first surface on a lower step portion of the step and a second surface on an upper step portion of the step; a second electrode that is disposed on the first surface at a distance apart from the step; and a third electrode that is disposed on the second surface at a distance apart from the step. | 10-02-2008 |
20080238297 | ORGANIC EL DISPLAY AND METHOD OF MANUFACTURING THE SAME - An organic EL display includes an array of electrodes including first and second electrodes, a counter electrode, and an organic layer including a first emitting layer interposed between the array of electrodes and the counter electrode and a second emitting layer interposed between the first emitting layer and the counter electrode. Each of the first and second emitting layers is a continuous layer extending over a display region. Portions of a laminate including the array of electrodes, the organic layer and the counter electrode that correspond to the first and second electrodes form first and second organic EL elements different in luminous colors from each other. | 10-02-2008 |
20080265745 | ORGANIC LED DISPLAY APPARATUS AND MANUFACTURING METHOD THEREOF - An organic LED display apparatus comprises a substrate and an upper cover. The substrate comprises a display area, a plurality of inner leads and a plurality of outer leads. The upper cover overlays the display area and the plurality of inner leads, and is hermetically combined with the substrate by means of an encapsulating material. The plurality of outer leads is covered with an insulating material that is laid on the outer leads immediately after they are formed on the substrate. Therefore, the plurality of outer leads can be protected from scratches and damage. | 10-30-2008 |
20080278063 | ELECTROLUMINESCENT DEVICE HAVING IMPROVED POWER DISTRIBUTION - An electroluminescent device comprising a first electrode and a second electrode having an EL unit formed there-between, wherein the EL unit comprises a light-emitting layer containing quantum dots, and the first and second electrodes define one or more light-emitting areas; wherein at least a portion of the second electrode is transparent and light emitted by the EL unit is viewed from a first side of the electroluminescent device that is nearer the second electrode; and one or more reflective elements that are electrically-conductive and are formed as part of the second electrode or in electrical communication with the second electrode; and wherein the reflective elements are located at least partially within the light emitting areas. | 11-13-2008 |
20080284312 | Semiconductor Device and Driving Method Thereof - In a light emitting device, a variation in intensity caused by varying a threshold value of a TFT for supplying a current to a light emitting element for each pixel becomes a burden to an improvement of an image quality of the light emitting device. A voltage equal to the threshold value of a TFT ( | 11-20-2008 |
20090128005 | Organic Electroluminescent Element and Manufacturing Method Thereof - An organic electroluminescent element | 05-21-2009 |
20090140632 | MOTHER GLASS AND METHOD OF FABRICATING ORGANIC ELECTRO LUMINESCENCE DISPLAY DEVICE USING THE SAME - A mother glass including a plurality of organic electro luminescence arrays having a scan pad and a data pad, wherein the plurality of organic electro luminescence arrays are arranged in a matrix type, comprising a non-array area, arranged between the organic electro luminescence arrays arranged in the matrix type, and an edge area located at an exterior of the arrangement of the matrix; at least more than one positive shorting bar formed at the edge area to supply with a positive voltage; at least more than one negative shorting bar formed at the edge area to supply with a negative voltage; a first line formed at the non-array area to electrically connect the data pad, formed in each of organic electro luminescence arrays, to the positive shorting bar; and a second line formed at the non-array area to electrically connect the scan pad, formed in each of organic electro luminescence arrays, to the negative shorting bar. | 06-04-2009 |
20090206727 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device capable of displaying two images. The organic light emitting display device according to an embodiment of the present invention includes a first substrate including a plurality of pixel circuits and first organic light emitting diodes in a region defined by a plurality of data lines and scan lines, and a second substrate spaced from and facing the first substrate, the second substrate including second organic light emitting diodes. A pixel of the organic light emitting display device includes a corresponding one of the pixel circuits and a corresponding one of the first organic light emitting diodes and a corresponding one of the second organic light emitting diodes coupled to the pixel circuit. | 08-20-2009 |
20110148285 | Light Emitting Device - It is an object of the invention to provide a light emitting device in which burden on a light emitting element having low luminous efficiency is relieved, and the deterioration of a light emitting element, the reduction in color reproduction due to the deteriorated light emitting element, and increase in electric power consumption can be suppressed. A light emitting device according to the invention has light emitting elements each of which emits one of colors corresponding to three primary colors. Further, one feature of the light emitting device according to the invention has a light emitting element which emits a neutral color. The light emitting device according to the invention has a structure in which a plurality of pixels having light emitting elements each of which emits one of colors corresponding to three primary colors, and a light emitting element which emits a neutral color as one group, are arranged. | 06-23-2011 |
20110156573 | DUAL PANEL TYPE ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME - An organic electroluminescent device including a switching element and a driving element connected to the switching element on a substrate including a pixel region, a cathode connected to the driving element, in which the cathode includes molybdenum (Mo), an emitting layer on the cathode, and an anode on the emitting layer. | 06-30-2011 |
20110279014 | OLED DEVICE WITH EMBEDDED CHIP DRIVING - An electroluminescent device having a plurality of current driven pixels arranged in rows and columns, such that when current is provided to a pixel it produces light, including each pixel having first and second electrodes and current responsive electroluminescent media disposed between the first and second electrodes; at least one chiplet having a thickness less than 20 micrometers; including transistor drive circuitry for controlling the operation of at least four pixels, the chiplet being mounted on a substrate and having connection pads; a planarization layer disposed over at least a portion of the chiplet; a first conductive layer over the planarization layer and connected to at least one of the connection pads; and a structure for providing electrical signals through the first conductive layer and at least one of the connection pads of the chiplet so that the transistor drive circuitry of the chiplet controls current to the four pixels. | 11-17-2011 |
20120086328 | LIGHT-EMITTING DISPLAY AND METHOD OF MANUFACTURING THE SAME - A light-emitting display capable of maintaining low power consumption and improving display quality irrespective of the configuration of an auxiliary wiring. A second electrode and an auxiliary wiring are electrically connected to each other through a conductive contact section. Moreover, only a part of the auxiliary wiring is connected to the contact section. Even if the surface of the auxiliary wiring is oxidized, an increase in connection resistance is prevented. Moreover, a restriction on layout is not imposed at the time of forming the contact section. | 04-12-2012 |
20120319564 | COLOR ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE - A color display device that increases the efficiency of use of white light emitted from an organic light-emitting diode (OLED) in producing an improved color display. The device includes a plurality of color OLED display pixels, which include an OLED, a color filter layer, and a color conversion matrix sandwiched between the OLED and the color filter layer. The color filter layer has a plurality of color filter elements including a red, green and blue color filter element. The array of subpixels comprised in the color conversion matrix is composed of semiconductor nanocrystals uniformly dispersed in an organic binding material, which may be employed in either down-emitting or up-emitting color OLED display devices. | 12-20-2012 |
20130076231 | METHOD OF MANUFACTURING AN ELECTRIC OPTICAL DEVICE IN WHICH EXTERNAL CONNECTION TERMINALS ARE FORMED - An electro-optical device includes an effective display region including a pixel, the pixel including a first electrode, a second electrode, and a light-emitting layer between the first electrode and the second electrode; and a wiring line connected to the second electrode at a position to the periphery of the effective display region, the wiring line including a first wiring layer and a second wiring layer that are electrically connected to each other and that overlap each other, the first wiring layer and the second wiring layer both extending in a direction in which an edge of the effective display region extends, the first wiring layer and the second wiring layer extending in the direction a distance that is longer than a distance in which the edge of the effective display region extends in the direction. | 03-28-2013 |
20130076232 | LIGHT EMITTING DEVICE - It is an object of the invention to provide a light emitting device in which burden on a light emitting element having low luminous efficiency is relieved, and the deterioration of a light emitting element, the reduction in color reproduction due to the deteriorated light emitting element, and increase in electric power consumption can be suppressed. A light emitting device according to the invention has light emitting elements each of which emits one of colors corresponding to three primary colors. Further, one feature of the light emitting device according to the invention has a light emitting element which emits a neutral color. The light emitting device according to the invention has a structure in which a plurality of pixels having light emitting elements each of which emits one of colors corresponding to three primary colors, and a light emitting element which emits a neutral color as one group, are arranged. | 03-28-2013 |
20140197727 | FLEXIBLE LED DISPLAY SCREEN - A flexible LED display screen is disclosed. The LED display screen includes a screen cloth, a plurality of rear pressure plates and a plurality of LED unit modules, wherein each module includes a housing, a light plate, a face shield and a plurality of LED lights which are arranged on the light plate in a array with at least two rows and two columns, the light plate is provided between the housing and the face shield, each module is connected to the front side of the screen cloth; the plurality of rear pressure plates are provided on the rear side of the screen cloth, each plate is opposite to each module respectively, a fixing hole is provided in the screen cloth, and a fixing member passes through the fixing hole to fix the rear pressure plates and the LED unit modules on two sides of the screen cloth. | 07-17-2014 |
313501000 | Light conversion | 44 |
20080231170 | Wavelength Converter, Light-Emitting Device, Method of Producing Wavelength Converter and Method of Producing Light-Emitting Device - A light-emitting device comprises a light-emitting element | 09-25-2008 |
20080246388 | INFRARED DISPLAY WITH LUMINESCENT QUANTUM DOTS - A display device that includes an underlying excitation source, a converting layer, and an optical filter layer. The underlying excitation source emits light in a spatial pattern that may or may not be altered in time and has a short wavelength capable of being at least partially absorbed by the overlying converting layer. The converting layer can be a contiguous film or pixels of quantum dots that can be dispersed in a matrix material. This converting layer is capable of absorbing at least a portion of the wavelength(s) of the light from the underlying excitation source and emitting light at one or more different wavelengths. The optical filter layer prevents the residual light from the excitation source that was not absorbed by the converting layer from being emitted by the display device. | 10-09-2008 |
20080284313 | Structured Luminescence Conversion Layer - An apparatus device such as a light source is disclosed which has an OLED device and a structured luminescence conversion layer deposited on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The structured luminescence conversion layer contains regions such as color-changing and non-color-changing regions with particular shapes arranged in a particular pattern. | 11-20-2008 |
20080290785 | Light Emitting Device with an Improved Caalsin Light Converting Material - Light emitting device with a light source to emit primary light and a light conversion layer to convert at least a part of the primary light into secondary light comprising a CaAlSiN light converting material with a transmissivity of >10% to ≦80% for a light in the wavelength range from >580 to ≦lOOOnm. | 11-27-2008 |
20080309219 | PHOSPHORS AND LIGHTING APPARATUS USING THE SAME - A phosphor has a chemical formula of: A(B | 12-18-2008 |
20090167149 | LIGHT SOURCE DEVICE AND ENDOSCOPE APPARATUS COMPRISING THE SAME - A light source device includes a first semiconductor light source, a second semiconductor light source, and a wavelength converter. The first semiconductor light source emits light in a first wavelength range. The second semiconductor light source emits light in a second wavelength range different from the first wavelength range. The wavelength converter absorbs the light in the first wavelength range to emit light in a third wavelength range different from either of the first wavelength range and the second wavelength range, and transmits the light in the second wavelength range substantially entirely. | 07-02-2009 |
20090179549 | ELECTRONIC DISPLAY INCLUDING A LIGHT-EMITTING ELEMENT AND A COLOR FILTER SANDWICHED BETWEEN TWO POLARIZERS - It is an object of the invention to achieve weight saving and downsizing of an electronic apparatus, in particular a portable electronic apparatus while enlarging a display screen thereof. The invention provides an electronic apparatus using a light emitting device which includes a light emitting element, a color filter provided on either side of an anode or a cathode of the light emitting element, and two polarizers sandwiching the light emitting element and the color filter, in which the anode and the cathode transmit light, deflection angles of the two polarizers are different from each other, and light obtained from the light emitting element is white. | 07-16-2009 |
20090189512 | FLUORESCENCE EMITTING DEVICE - [Object] To provide a light emitting device which can take out fluorescence with luminance higher than conventional by efficiently converting excitation light into fluorescence. | 07-30-2009 |
20090261708 | GLASS-PHOSPHOR CAPPING STRUCTURE FOR LEDS - An LED and method for increasing the reliability of LEDs are provided. The LED contains a semiconductor die, a reflector, and a glass capping structure. The glass structure may be solid or formed from multiple layers of uniform or varying dimensions. The glass structure is coated with a phosphor that emits light of a different wavelength than the die. The phosphor is disposed between adjacent layers if the glass structure has multiple layers. The die is disposed in a cavity of the reflector. The cavity may be evacuated or filled with a transparent material. | 10-22-2009 |
20100060143 | Color stabilized light source having a thermally conductive luminescent element and a light emitting diode - A color stabilized light source has a thermally conductive luminescent element in conjunction with a light emitting diode. A thermal pathway through the LED allows the thermally conductive luminescent element to maintain its output level even at high flux levels. | 03-11-2010 |
20100176713 | PHOSPHOR PARTICLE GROUP AND LIGHT EMITTING APPARATUS USING THE SAME - Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles each of which is a β-type SiAlON substantially represented by a general formula: EuaSibAlcOdNe, where 0.0055≦a≦0.4, b+c=12, d+e=16, wherein 60% or more of the phosphor particle group is composed of the phosphor particles in which a value obtained by dividing a longer particle diameter by a shorter particle diameter is greater than 1.0 and not greater than 3.0. A high-efficiency and stable light emitting apparatus using a β-type SiAlON, which includes a light converter using the phosphor particle group, and a phosphor particle group therefor are also provided. | 07-15-2010 |
20100201254 | LIGHT EMITTING ELEMENT AND LIGHT EMITTING DEVICE USING THE LIGHT EMITTING ELEMENT - The light emitting element includes a first electrode and a second electrode opposite each other and electrically connected respectively to a first conductive-type layer and a second conductive type layer constituting a semiconductor structure. The first electrode has a pair of electrode extending portions disposed opposite each other on an electrode forming surface over the first conductive-type layer which is positioned at the light extracting side. In the opposing direction of the pair of electrode extending portions, a half distance I | 08-12-2010 |
20100207511 | SEMICONDUCTOR LIGHT EMITTING DEVICE - A light emitting device is provided in which fluorescence emitted from each phosphor in the color conversion plate containing multiple types of phosphors is hard to be absorbed by the other phosphor, and the light from the light emitting element is allowed to reach each of the phosphors efficiently. The color conversion plate has a sea-island structure including a sea region and an island region, and the island region contains the first phosphor and the sea region contains the second phosphor. The fluorescent wavelength of the first phosphor is longer than the fluorescent wavelength of the second phosphor. With the sea-island structure as described above, the contact area between the region containing the first phosphor and the region containing the second phosphor is reduced. The fluorescence of the second phosphor is hard to be absorbed by the first phosphor which has a longer wavelength. | 08-19-2010 |
20100213820 | BETA-SIALON PHOSPHOR POWDER AND PRODUCTION METHOD THEREOF - A β-sialon phosphor particle in which Eu (europium) is solid-soluted in a crystal having a β-type Si | 08-26-2010 |
20100213821 | LIGHT EMITTING DEVICE PROVIDED WITH A WAVELENGTH CONVERSION UNIT INCORPORATING PLURAL KINDS OF PHOSPHORS - A light-emitting device includes a light-emitting element for emitting primary light, and a wavelength conversion unit for absorbing part of the primary light and emitting secondary light having a wavelength longer than that of the primary light, wherein the wavelength conversion unit includes plural kinds of phosphors having light absorption characteristics different from each other, and then at least one kind of phosphor among the plural kinds of phosphors has an absorption characteristic that can absorb the secondary light emitted from at least another kind of phosphor among the plural kinds of phosphors. | 08-26-2010 |
20100244662 | ELECTROLUMINESCENT PHOSPHOR-CONVERTED LIGHT SOURCE AND METHOD FOR MANUFACTURING THE SAME - A luminescent light source ( | 09-30-2010 |
20100295442 | Solid State Illumination Device - A solid state illumination device includes a semiconductor light emitter mounted on a base and surrounded by sidewalls, e.g., in a circular, elliptical, triangular, rectangular or other appropriate arrangement, to define a chamber. A top element, which may be reflective, may be coupled to the sidewalls to further define the chamber. The light produced by the semiconductor light emitter is emitted through the sidewalls of the chamber. The sidewalls and/or top element may include wavelength converting material, for example, as a plurality of dots on the surfaces. An adjustable wavelength converting element may be used within the chamber, with the adjustable wavelength converting element being configured to adjust the surface area that is exposed to the light emitted by the semiconductor light emitter in the chamber to alter an optical property of the chamber. | 11-25-2010 |
20100327733 | MULTIPLE LAYER PHOSPHOR BEARING FILM - A multiple layer phosphor bearing film having a phosphor bearing layer comprising phosphor, a transparent protective layer, and an adhesive configured to adhere the film to a light source. | 12-30-2010 |
20110001422 | LIGHT EMITTING DIODE COMPONENT - In a lighting package, a printed circuit board supports at least one light emitting die. A light transmissive cover is disposed over the at least one light emitting die. A phosphor is disposed on or inside of the light transmissive dome-shaped cover. The phosphor outputs converted light responsive to irradiation by the at least one light emitting die. An encapsulant substantially fills an interior volume defined by the light-transmissive cover and the printed circuit board. | 01-06-2011 |
20110025191 | Method and Apparatus for Generating Phosphor Film with Textured Surface - An optical device deploring a phosphor layer having a textured surface to improve output of visual light is disclosed. A light emitting device includes a solid state light emitter and a phosphor layer. The solid state light emitter, for example, is configured to convert electrical energy to optical light. The phosphor layer includes a first surface and a second surface, wherein the first surface, for example, is the top surface while the second surface is the bottom surface. The phosphor layer is disposed over the solid state light emitter for generating luminous light in response to the optical light. The first surface of the phosphor layer, in one embodiment, is configured to include a texture, which has similarly shaped uniform configurations, capable of reducing total internal reflection. | 02-03-2011 |
20110025192 | ILLUMINATION DEVICE WITH LED AND A TRANSMISSIVE SUPPORT COMPRISING A LUMINESCENT MATERIAL - The invention provides an illumination device ( | 02-03-2011 |
20110062857 | LIGHT EMITTING DIODE LIGHT SOURCE DEVICE WITH COLOR TEMPERATURE ADJUSTMENT CAPABILITY - An LED light source device with color temperature adjustment capability includes at least one light-emitting diode and a color temperature conversion element. A front end of the light-emitting diode has a light-emitting end. The color temperature conversion element is disposed in front of the light-emitting end of the light-emitting diode. The color temperature conversion element includes a light-transmitting substrate and color temperature conversion materials. The color temperature conversion materials are provided on/in the light-transmitting substrate. The color temperature conversion materials include high refractive index materials and low refractive index materials. The high refractive index materials that are selected from the group consisting of TiO | 03-17-2011 |
20110089815 | LIGHT-EMITTING DEVICE - A light-emitting device includes a photonic crystal layer formed above a light-emitting chip and covered with a phosphor layer for diffusing light emitted from the light-emitting chip. The diffused light further excites the phosphor layer to emit colored light of multiple colors. The multiple colors are then mixed to generate white light. | 04-21-2011 |
20110127904 | LIGHTING MODULE - An embodiment of the present invention provide a lighting module, which comprises a carrier, at least one light source disposed on and electrically connected with the carrier, a molding compound mixed with a fluorescent material to encapsulate the light source and a portion of the carrier, and a color temperature converter disposed over or doped into the molding compound. | 06-02-2011 |
20110175520 | LIGHTING USING SOLID STATE DEVICE AND PHOSPHORS TO PRODUCE LIGHT APPROXIMATING A BLACK BODY RADIATION SPECTRUM - Solid state light emitting devices and/or solid state lighting devices use three or more phosphors excited by energy from a solid state source. The phosphors are selected and included in proportions such that the visible light output of such a device exhibits a radiation spectrum that approximates a black body radiation spectrum for the rated color temperature for the device, over at least a predetermined portion of the visible light spectrum. | 07-21-2011 |
20110221330 | HIGH CRI LIGHTING DEVICE WITH ADDED LONG-WAVELENGTH BLUE COLOR - Solid state lighting devcies include least one solid state emitter and multiple lumiphors, arranged to output aggregated emissions comprising at least one short wavelength blue peak, at least one long wavelength blue (LWB) peak, at least one yellow and/or green peak, and at least one red and/or orange peak. Presence of long wavelength blue enhances color rendering. At least one solid state emitter may include a short wavelength blue LED, LWB LED, and/or UV LED. Multiple emitters may be provided. Resulting devices may provide CRI greater than 85, efficiency of greater than 50 lm/watt, and color stability in a range of Δu′v′≦0.008 over a temperature change of 75° C. | 09-15-2011 |
20110241538 | IMAGE DISPLAY DEVICE AND LIGHT EMISSION DEVICE - An image display device including a light emission section which emits light to an intensity adjusting section and a wavelength conversion section which change the intensity and wavelength of the emitted light. Phosphors and phosphor like materials are employed in wavelength conversion and a liquid crystal is employed for the light adjustment. The light emission device may include plural semiconductor light emitting elements having a different wavelength ranges such as diodes stacked in a compact and predetermined order such that wavelengths of light from each diode are emitted from the light emitting elements. | 10-06-2011 |
20110279015 | LIGHTING DEVICE AND METHOD OF MAKING - A lighting device comprising first and second groups of non-white light sources emitting light outside a first area on a 1976 CIE Chromaticity Diagram bounded by a curves 0.01 u′v′ above and below the blackbody locus and within a second area enclosed by saturated light curves from 430 to 465 nm and from 560 to 580 nm and segments from 465 to 560 nm and from 580 to 430 nm and a supplemental light emitter in the range of 600 to 640 nm. Also, a lighting device, comprising a first string of non-white phosphor converted light sources with excitation sources having dominant wavelengths that differ by at least 5 nm, a second string of non-white light sources, and a third string of supplemental light emitters in the range of 600 to 640 nm. | 11-17-2011 |
20110291548 | LAMP COVER FOR LIGHT EMITTING DEVICE - A lamp cover containing phosphor for providing white light emission is disclosed. The lamp cover is comprised of a light-partial-reflective cap structure providing the outer surface of the lamp cover, wherein the light-partial-reflective cap structure is composed of a plurality of light transparent layers and a plurality of vacuum layers that are alternatively stacked from outside to inside, a supporting transparent cap structure providing the inner surface of the lamp cover, and a phosphor mixed structure mechanically supported by the outer surface of the supporting transparent cap structure, wherein the outer surface of the phosphor mixed structure is adjacent to the most inner vacuum layer of the light-partial-reflective cap structure. Once the lamp cover is combined with a phosphor exciting light source, the light-partial-reflective cap structure partially prevents phosphor exciting light from escaping from the lamp cover by using Fresnel reflection. | 12-01-2011 |
20120068594 | Semiconductor Light Emitting Devices with Densely Packed Phosphor Layer at Light Emitting Surface - An LED includes a chip having a light emitting surface, and a coating of phosphor-containing material on the light emitting surface. Phosphor particles are arranged in a densely packed layer within the coating at the light emitting surface, and such that the light emitting surface is in contacting relationship with the phosphor particles. | 03-22-2012 |
20120074835 | LED Wavelength-Coverting Plate with Microlenses in Multiple Layers - A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes multiple layers of microlenses deposited thereon. The microlenses may have an index of refraction different from an index of refraction of the wavelength-converting plate. | 03-29-2012 |
20120074836 | LED Wavelength-Converting Plate with Microlenses - A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes microlenses deposited thereon. The microlenses may have an index of refraction different from the index of refraction of the wavelength-converting plate. The microlenses on the top surface of the plate increase lumen output in a direction normal to the top surface of a wavelength-converting plate. | 03-29-2012 |
20120074837 | OPTICAL LENS HAVING FLUORESCENT LAYER ADAPTED FOR LED PACKAGING STRUCTURE - An optical lens having a fluorescent layer is provided. The optical lens is adapted for being employed in an LED packaging structure. The optical lens includes a substrate, at least one lens body, a lens shade, and a packaging member. The substrate is positioned at a bottommost side of the packaging structure, and the lens shade is positioned at a topmost side of the packaging structure. The lens body is positioned over the substrate and beneath the lens shade. A plurality of light emitting units are disposed on the substrate. The packaging member is adapted for packaging the substrate and the lens shade. The lens body is secured by the packing member so as to be positioned over the light emitting units. The lens body includes a fluorescent layer buried inside the lens body, and the lens body is positioned apart from the light emitting units for a certain distance. | 03-29-2012 |
20120081000 | LED ENCAPSULATION PROCESS AND SHIELD STRUCTURE MADE THEREBY - The present invention discloses an LED encapsulation process and a shield structure made thereby. Firstly, a first encapsulation layer is provided, phosphor powder is uniformly disposed on a surface of the first encapsulation layer, and a second encapsulation layer is disposed on the phosphor powder to fully cover the first encapsulation layer so that the phosphor powder is sandwiched between the two encapsulation layers to ensure its arrangement position. Finally, the aforementioned members are heated and stamped to form one piece which is cut into a required shield shape. | 04-05-2012 |
20120112626 | WHITE LIGHT-EMITTING SEMICONDUCTOR DEVICES - A white light-emitting semiconductor device having improved reproducibility of bright red. The device outputs light having a blue component, a green component, and a red component. Each of the light components (blue, green, and red) consists of a light-emitting semiconductor element and/or a phosphor that absorbs light emitted by a light-emitting semiconductor element and emits light through wavelength conversion. The outputted light has a spectrum which has a maximum wavelength in the range of 615-645 nm, and the intensity at a wavelength of 580 nm of the outputted light, which has been normalized with respect to luminous flux, is 80-100% of the intensity at a wavelength of 580 nm of standard light for color rendering evaluation, which has been normalized with respect to luminous flux. | 05-10-2012 |
20120126686 | FLOURESCENCE MATERIAL AND WHITE LIGHT ILLUMINATION ELEMENT - A fluorescence material and a white light illumination element are provided. The white light illumination element includes a light emitting diode (LED) chip, a first fluorescence material, and a second fluorescence material. The LED chip is configured on a substrate and emits an exciting light. The first fluorescence material and the second fluorescence material are configured on the LED chip. A composition of the first fluorescence material includes an aluminum nitride oxide doped with at least one of europium (Eu) and manganese (Mn). A first emitted light emitted by the first fluorescence material after the first fluorescence material absorbs the exciting light emitted from the LED chip and a second emitted light emitted by the second fluorescence material after the second fluorescence material absorbs the exciting light emitted from the LED chip are mixed to generate a white light. | 05-24-2012 |
20120242216 | LIGHT-EMITTING DEVICE - A light-emitting device that suppresses color unevenness can be provided. A transparent member can be disposed on a fluorescence-containing resin layer. Part of excitation light can be emitted upward from an edge surface of the fluorescence-containing resin layer directly and without passing through the transparent member. Thus, fluorescent light emitted in large quantities from a place near an edge surface of the transparent member can be mixed with the excitation light emitted from the edge surface of the fluorescence-containing resin layer directly without passing through the transparent member, thereby suppressing color unevenness at a location near the edge surface of the transparent member. | 09-27-2012 |
20120286646 | HALOPHOSPHATE PHOSPHOR AND WHITE LIGHT-EMITTING DEVICE - The present invention provides a blue (blue-green) phosphor that has sufficient emission intensity in the wavelength region around 490 nm and that has high emission luminance at a temperature region reached during LED operation. The present invention also provides a white light-emitting device that uses a high-luminance green phosphor having an emission peak wavelength of 535 nm or greater and that has improved bright blue reproducibility. | 11-15-2012 |
20130076233 | LIGHT-EMITTING ELEMENT AND LIGHTING DEVICE USING THE SAME - A light-emitting element according to an embodiment of the present invention includes a body including an upper surface, a lower surface opposite to the upper surface, and a peripheral side surface extending between peripheral edges of the upper surface and peripheral edges of the lower surface, the peripheral side surface including a front surface and a rear surface opposite to the front surface; a pair of element electrodes as a first element electrode and a second element electrode positioned at the rear surface of the body; and a support disposed at the rear surface of the body between the first element electrode and the second element electrode that are positioned at a lower area of the rear surface of the body. | 03-28-2013 |
20130285536 | WAVELENGTH CONVERTER AND SEMICONDUCTOR LIGHT EMITTING DEVICE - According to an embodiment, a wavelength converter includes a resin allowing light emitted from a light source to pass through, a plurality of particle-shaped fluorescent substances dispersed in the resin, and fillers dispersed in the resin with a particle diameter smaller than the fluorescent substance. The fluorescent substances absorb the light emitted from the light source and emits fluorescence having a wavelength different from a wavelength of the light emitted from the light source; and a distribution of the fillers has higher density near the fluorescent substance than a density at a middle position between the fluorescent substances adjacent to each other. | 10-31-2013 |
20140042896 | WHITE LIGHT-EMITTING SEMICONDUCTOR DEVICES - A white light-emitting semiconductor device having improved reproducibility of bright red. The device outputs light having a blue component, a green component, and a red component. Each of the light components (blue, green, and red) is based on a light-emitting semiconductor element and/or a phosphor that absorbs light emitted by a light-emitting semiconductor element and emits light through wavelength conversion. The outputted light has a spectrum which has a maximum wavelength in the range of 615-645 nm, and the intensity at a wavelength of 580 nm of the outputted light, which has been normalized with respect to luminous flux, is 80-100% of the intensity at a wavelength of 580 nm of standard light for color rendering evaluation, which has been normalized with respect to luminous flux. | 02-13-2014 |
20140084781 | LIGHT EMITTING DEVICE - A light emitting device includes a substrate including a base member, a plurality of wiring portions disposed on a surface of the base member, a covering portion having openings respectively exposing a part of the wiring portions, a plurality of light emitting elements respectively electrically connected to the wiring portions exposed from the covering portion, and sealing members respectively sealing the light emitting elements. At least a part of the covering portion contains a light-storing material. | 03-27-2014 |
20140152172 | LIGHT-EMITTING DIODE AND LIGHTING DEVICE INCLUDING THE SAME - In a first aspect of the present invention, a light-emitting diode includes a light-emitting element with a p-n junction, a first light-transmitting member including a phosphor and sealing the light-emitting element, and first and second covers disposed on opposite surfaces of the first light-transmitting member. It is disclosed that the first and second covers extend over edges of the opposite surfaces of the first light-transmitting member. In a second aspect of the present invention, a first cover disposed on a first parallel surface of a first light-transmitting member can be greater in thickness than a second cover. In some embodiments, it is disclosed that a second light-transmitting member with higher diffusion coefficient than the first light-transmitting member disposed in contact with a first perpendicular surface of the first light-transmitting member. | 06-05-2014 |
20140319995 | DISPLAY DEVICE - Disclosed is a display device. The display device includes: a light source; an optical sheet into which light is incident from the light source; a display panel disposed on the optical sheet and including an effective display region and a non-effective display region around the effective display region; and a light conversion/light-blocking sheet corresponding to the non-effective display region. | 10-30-2014 |