With Phosphor Embedding Material Patents (Class 313/502)
-
Patent number: 8383249Abstract: The present invention relates to organic light emitting devices (OLEDs), and more specifically to phosphorescent organic materials used in such devices. More specifically, the present invention relates to emissive phosphorescent material which comprise at least one tridentate ligand bound to a metal center, wherein at least one of the bonds to the tridentate ligand is a carbon-metal bond.Type: GrantFiled: October 4, 2007Date of Patent: February 26, 2013Assignee: Universal Display CorporationInventors: Robert W. Walters, Jui-Yi Tsai, Peter Borden Mackenzie, Scott Beers
-
Publication number: 20130043782Abstract: In one aspect, an illumination apparatus includes a waveguide, embedded in which are a light-emitting source and a photoluminescent material. Output light is emitted from at least a portion of a first surface of the waveguide. The photoluminescent material includes nano-size phosphor particles and/or quantum dots.Type: ApplicationFiled: August 24, 2012Publication date: February 21, 2013Applicant: Oree, Inc.Inventors: Noam Meir, Eran Fine
-
Patent number: 8372526Abstract: A device is provided, having an anode, a cathode, and an intermediate connector disposed between the anode and the cathode. A first organic layer including an emissive sublayer is disposed between the anode and the intermediate connector, and a second including an emissive sublayer is disposed between the intermediate connector and the cathode. The intermediate connector includes a first metal having a work function lower than 4.0 eV and a second metal having a work function lower than 5.0 eV. The work function of the first metal is at least 0.5 eV less than the work function of the second metal. The first metal is in contact with a sublayer of the second organic layer that includes a material well adapted to receive holes from a low work function metal.Type: GrantFiled: July 16, 2008Date of Patent: February 12, 2013Assignee: Universal Display CorporationInventor: Brian D'Andrade
-
Patent number: 8372529Abstract: Provided are an organic electroluminescence device, which: shows high luminous efficiency; is free of any pixel defect; and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound of a specific structure having a ?-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, or oxygen atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.Type: GrantFiled: October 11, 2011Date of Patent: February 12, 2013Assignee: Idemitsu Kosan Co., Ltd.Inventors: Tomoki Kato, Masaki Numata, Kazuki Nishimura, Toshihiro Iwakuma, Chishio Hosokawa
-
Publication number: 20130033170Abstract: A solid state light engine includes a bridge rectifier having a rectified output. At least one light emitting diode (LED) is connected to the bridge rectifier, the at least one LED including a die portion, a layer of phosphor free resin positioned upon the die portion, and a plurality of phosphor particles adhered to the layer of phosphor free resin. A pair of AC power input terminals are electrically connected to the input of the bridge rectifier for use in coupling the bridge rectifier to an AC power source. A pair of DC power input terminals are connected to the rectified output of the bridge rectifier for use in coupling the bridge rectifier to a circuit productive of a DC voltage at the pair of DC power terminals. The layer of phosphor free resin includes a polymeric resin.Type: ApplicationFiled: August 10, 2012Publication date: February 7, 2013Applicant: LIGHTING SCIENCE GROUP CORPORATIONInventors: Robert J. Burdalski, Joseph B. Mazzochette
-
Publication number: 20130033169Abstract: There is provided a method for producing a light emitting device having a small light emitting area and showing high light extraction efficiency. An uncured resin 13? is dropped on either one or both of a light emitting element 11 and a tabular member 14 in such an amount that the resin is maintained on them by surface tension, the light emitting element 11 and the tabular member 14 are piled up with the uncured resin 13? maintained between them and on a side of the light emitting element by surface tension of the uncured resin 13? to form an uncured resin layer 13? having an inclined side 130, and then the resin layer 13 is cured. The tabular member is constituted with a material having an alkali metal oxide content of 0.2% by weight or lower.Type: ApplicationFiled: August 4, 2012Publication date: February 7, 2013Inventors: Kosaburo Ito, Toshihiro Seko, Kazuhiko Ueno, Naoto Suzuki
-
Patent number: 8367219Abstract: Provided are an anthracene-based compound represented by Formula 1 or 2 and an organic light emitting device employing the same: where R is a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 aralkyl group or a substituted or unsubstituted C2-C30 heteroaryl group, L is a bivalent linking group and a substituted or unsubstituted C6-C30 arylene group or a substituted or unsubstituted C2-C30 heteroarylene group, and m is an integer of 0 to 3.Type: GrantFiled: September 29, 2008Date of Patent: February 5, 2013Assignees: Samsung Electronics Co., Ltd., Samsung Display Co., Ltd.Inventors: Sang-hoon Park, O-hyun Kwon, Seung-gak Yang, Yu-jin Kim, Yu-ri Choi
-
Patent number: 8367220Abstract: Provided are an anthracene-based compound represented by Formula 1 or 2 and an organic light emitting device employing the same: where R is a hydrogen atom, a halogen atom, a cyano group, a hydroxyl group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C5-C30 heterocycloalkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 aralkyl group or a substituted or unsubstituted C2-C30 heteroaryl group, L is a bivalent linking group and a substituted or unsubstituted C6-C30 arylene group or a substituted or unsubstituted C2-C30 heteroarylene group, and m is an integer of 0 to 3.Type: GrantFiled: December 19, 2008Date of Patent: February 5, 2013Assignees: Samsung Electronics Co., Ltd., Samsung Display Co., Ltd.Inventors: Sang-hoon Park, O-hyun Kwon, Seung-gak Yang, Yu-jin Kim, Yu-ri Choi, Kwan-hee Lee
-
Patent number: 8358065Abstract: A display panel package structure is disclosed, which includes a first substrate, a metal wire layer formed on the first substrate, an insulating layer formed on the metal wire layer, a second substrate, a frit formed on an edge of the second substrate for sealing the first substrate and the second substrate, and a conductive layer formed between the frit and the insulating layer corresponding to the frit for conducting a heat when the frit is heated.Type: GrantFiled: August 30, 2010Date of Patent: January 22, 2013Assignee: Au Optronics CorporationInventors: Chih-Che Liu, Shih-Feng Hsu
-
Patent number: 8350463Abstract: A phosphor of the alpha-sialon type is provided, wherein the general empirical formula is M1p/2Si12?p?qAlp+qOqN16?q:D; where M1 is one or more elements from the group Li, Mg, Ca, Y and the lanthanoids with the exception of Ce and La; D is a co-doping consisting of M2 and Mn, where M2=one or more elements from the group Ce, Pr, Eu, Tb, Yb and Er; in this situation q=0 to 2.5 and p=0.5 to 4 is chosen.Type: GrantFiled: July 20, 2009Date of Patent: January 8, 2013Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Bianca Pohl, Frank Jermann
-
Solid state light sheet having wide support substrate and narrow strips enclosing LED dies in series
Patent number: 8344397Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: May 3, 2011Date of Patent: January 1, 2013Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky -
Patent number: 8343638Abstract: An organic light emitting diode is disclosed, and includes a light-efficiency-improvement layer containing a compound represented by Formula 1:Type: GrantFiled: August 18, 2009Date of Patent: January 1, 2013Assignee: Samsung Display Co., Ltd.Inventors: Seung-Gak Yang, Hee-Yeon Kim, Jae-Yong Lee, Jong-Hyuk Lee
-
Patent number: 8339035Abstract: An organic EL light emitting module includes an organic EL light emitting panel 5 including an organic EL light emitting unit 52 formed on a substrate 51 and electrode terminals 53 for supplying power to the organic EL light emitting unit 52; a circuit substrate 3, electrically connected to the electrode terminals 53, for supplying power to the electrode terminals 53; and a casing 4 to which the organic EL light emitting panel 5 and the circuit substrate 3 are attached. The electrode terminals 53 are disposed at left and right end portions of the organic EL light emitting panel 5 having a substantially rectangular shape when viewed from the top, and extended portions 4a protruding by a predetermined width are formed at side surfaces of the casing 4 where the electrode terminals 53 of the organic EL light emitting panel 5 are absent.Type: GrantFiled: April 7, 2011Date of Patent: December 25, 2012Assignee: Panasonic CorporationInventors: Satoshi Fukano, Hideharu Kawachi, Shigetsugu Sumiyama
-
Patent number: 8338839Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: April 4, 2011Date of Patent: December 25, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
-
Patent number: 8338000Abstract: Embodiments of the present invention are directed to a heterocyclic compound and an organic light-emitting device including the heterocyclic compound. The organic light-emitting devices using the heterocyclic compounds have high-efficiency, low driving voltage, high luminance and long lifespan.Type: GrantFiled: August 6, 2010Date of Patent: December 25, 2012Assignee: Samsung Display Co., Ltd.Inventors: Yoon-Hyun Kwak, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Jong-Hyuk Lee, Jin-O Lim, Hyung-Jun Song
-
Patent number: 8338840Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: April 28, 2011Date of Patent: December 25, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
-
Patent number: 8338841Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: April 28, 2011Date of Patent: December 25, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
-
Patent number: 8338842Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: May 3, 2011Date of Patent: December 25, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
-
Publication number: 20120313506Abstract: The present invention provides a novel organic compound having excellent heat resistance. By using the novel organic compound, a light-emitting device and an electronic device having excellent heat resistance can be provided. A quinoxaline derivative represented by the general formula (1) is provided. Since the quinoxaline derivative represented by the general formula (1) has excellent heat resistance, when it is used for a light-emitting element, a light-emitting device using the light-emitting element also have excellent heat resistance. Further, electronic devices having excellent heat resistance can be provided.Type: ApplicationFiled: August 24, 2012Publication date: December 13, 2012Inventors: Masakazu Egawa, Nobuharu Ohsawa
-
Patent number: 8330361Abstract: Exemplary embodiments of the present invention relate to an OLED display. The OLED display according to exemplary embodiments of the present invention includes: a substrate; a plurality of pixel electrodes on the substrate; a pixel defining layer on the substrate and having a plurality of openings exposing the plurality of pixel electrodes; a plurality of organic emission layers on corresponding pixel electrodes of the plurality of pixel electrodes; a sealing member including a plurality of concave lens containers and covering the plurality of organic emission layers and the pixel defining layer; and at least one condenser in the plurality of lens containers. The at least one condenser is configured to form a condensing area on the pixel defining layer for each of the plurality of lens containers.Type: GrantFiled: March 24, 2009Date of Patent: December 11, 2012Assignee: Samsung Display Co., Ltd.Inventor: Eun-Ah Kim
-
Patent number: 8330348Abstract: 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.Type: GrantFiled: May 19, 2006Date of Patent: December 11, 2012Assignee: Osram Opto Semiconductors GmbHInventors: Dirk Berben, Homer Antoniadis, Frank Jermann, Benjamin Claus Krummacher, Norwin Von Malm, Martin Zachau
-
Patent number: 8330349Abstract: The present invention is directed to phosphors and white light emitting diodes and a method for preparing a Ce3+ doped calcium silicate phosphor represented by a chemical formula of (Ca1-yMy)2-x-zSiO4:Ce3+x,N+z, wherein x is 0<x?0.5, y is 0?y?0.5, z is 0<z?0.5, M is at least one metal selected from Mg, Sr and Ba, and N is at least one metal selected from Li, Na, K and Rb, as well as white LEDs produced comprising the same. The phosphor of the present invention can be excited using conventional InGaN-based blue light emitting diodes, as well as GaN-based near-UV light emitting diodes to emit light across the visible spectrum.Type: GrantFiled: September 29, 2008Date of Patent: December 11, 2012Assignee: Korea Advanced Institute of Science and TechnologyInventors: Ho Seong Jang, Duk Young Jeon
-
Patent number: 8330358Abstract: An illumination device includes a transparent substrate and multiple first metal lines. The transparent substrate includes an emitting area and a peripheral area and the emitting area includes multiple sub-emitting areas. The first metal lines are disposed on the transparent substrate, each first metal line has an end connected to a corresponding one of the sub-emitting areas and an opposite end connected to the peripheral area. Each sub-emitting area includes an insulating layer, a second metal line and an OLED layer. The second metal line is disposed between the transparent substrate and the OLED layer, the insulating layer is between the first metal lines and the second metal line, each first metal line is overlapped with the second metal line in vertical projection. One of the first metal lines, which is connected to a first one of the sub-emitting areas, passes through a second one of the sub-emitting areas.Type: GrantFiled: March 3, 2011Date of Patent: December 11, 2012Assignee: AU Optronics Corp.Inventors: Chen-Chi Lin, Chieh-Wei Chen, Chun-Liang Lin, Ting-Kuo Chang
-
Patent number: 8318044Abstract: A light emitting device is disclosed. The light emitting device may include a light emitting diode (LED) for emitting light and phosphor adjacent to the LED. The phosphor may be excitable by light emitted by the LED and may include a first compound having a host lattice comprising first ions and oxygen. In one embodiment, the host lattice may include silicon, the copper ions may be divalent copper ions and first compound may have an Olivin crystal structure, a ?-K2SO4 crystal structure, a trigonal Glaserite (K3Na(SO4)2) or monoclinic Merwinite crystal structure, a tetragonal Ackermanite crystal structure, a tetragonal crystal structure or an orthorhombic crystal structure. In another embodiment, the copper ions do not act as luminescent ions upon excitation with the light emitted by the LED.Type: GrantFiled: June 25, 2009Date of Patent: November 27, 2012Assignee: Seoul Semiconductor Co., Ltd.Inventors: Chung-Hoon Lee, Gundula Roth, Walter Tews
-
Patent number: 8319418Abstract: The present invention relates to an organic electro-luminescence display device and a method for fabricating the same, in which damage to a pad portion is prevented for improving yield. The organic electro-luminescence display device includes a thin film transistor array unit formed on a front surface of a lower substrate and a pad portion extended from the thin film transistor array unit, an organic EL array unit on the thin film transistor array unit having a matrix of organic EL cells, and a protective member for protecting the organic EL array unit and the thin film transistor array unit and exposing the pad portion to an outside, wherein the lower substrate has a thickness of a first region overlapped with the pad portion thicker than a thickness of a second region overlapped with the thin film transistor array unit.Type: GrantFiled: December 28, 2009Date of Patent: November 27, 2012Assignee: LG Display Co., Ltd.Inventors: Jae-Young Lee, Tae-Yeon Yoo
-
Publication number: 20120293063Abstract: Provided is an optoelectronic device that includes: a light source; an emission layer disposed on the light source and including light emitting particles dispersed in a matrix polymer; and a polymer film disposed on the emission layer. The polymer film includes two layers: a first layer including a first polymer and a second layer including a second polymer. The first polymer includes a polymerized product of a first monomer including at least two thiol (—SH) groups and a siloxane-based second monomer or oligomer including at least one carbon-carbon unsaturated bond at a terminal end, and the second polymer includes a polymerized product of a third monomer including at least two thiol (—SH) groups and a fourth monomer including at least two carbon-carbon unsaturated bonds at a terminal end.Type: ApplicationFiled: May 9, 2012Publication date: November 22, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun A. KANG, Young Hwan KIM, Eun Joo JANG, Shin Ae JUN, Hyo Sook JANG
-
Patent number: 8308980Abstract: A light emitting device is disclosed. The light emitting device may include a light emitting diode (LED) for emitting light and phosphor adjacent to the LED. The phosphor may be excitable by light emitted by the LED and may include a first compound having a host lattice comprising first ions and oxygen. In one embodiment, the host lattice may include silicon, the copper ions may be divalent copper ions and first compound may have an Olivin crystal structure, a ?-K2SO4 crystal structure, a trigonal Glaserite (K3Na(SO4)2) or monoclinic Merwinite crystal structure, a tetragonal Ackermanite crystal structure, a tetragonal crystal structure or an orthorhombic crystal structure. In another embodiment, the copper ions do not act as luminescent ions upon excitation with the light emitted by the LED.Type: GrantFiled: June 25, 2009Date of Patent: November 13, 2012Assignee: Seoul Semiconductor Co., Ltd.Inventors: Chung Hoon Lee, Gundula Roth, Walter Tews
-
Patent number: 8310144Abstract: A luminair and a display device including a light emitting diode, a light exit window and a luminescent layer arranged between the light emitting diode and the light exit window. The light emitting diode emits light of a first primary color. The luminescent layer is arranged between the light emitting diode and the light exit window for converting part of the light emitted by the light emitting diode into light of a second primary color. The luminescent layer includes a garnet luminescent material of one of at least Lutetium, Cerium, Silicon and Nitrogen, or a combination of a garnet luminescent material of at least Lutetium and Cerium and a garnet luminescent material of at least Cerium and at least one of Yttrium and Gadolinium.Type: GrantFiled: October 15, 2007Date of Patent: November 13, 2012Assignee: Koninklijke Philips Electronics N.V.Inventors: Christoph Gerard August Hoelen, Rene Theodorus Wegh, Jan Broere, Ludo Haenen
-
Patent number: 8310143Abstract: A lighting device comprising at least one solid state light emitter and at least one lumiphor. If each solid state light emitter is illuminated and each lumiphor is excited, a mixture of light emitted has x, y color coordinates within an area defined by the coordinates 0.32, 0.40; 0.36, 0,48; 0.43, 0.45; 0.42, 0.42; and 0.36, 0.38. The lumiphor(s) comprises phosphor particles, in the range of from 3 to 7 micrometers (or 5-15, 10-20, or 15-25 micrometers), or having a mean particle size of 5, 10, 15, 20 micrometers. Also, a lighting device comprising at least one emitter and at least one lumiphor in which the lumiphor comprises phosphor particles having sizes as mentioned above, where the lighting device has an efficacy of at least 60 (or 70, or 80) lumens per watt.Type: GrantFiled: August 22, 2007Date of Patent: November 13, 2012Assignee: Cree, Inc.Inventors: Antony Paul Van De Ven, Gerald H. Negley
-
Patent number: 8310153Abstract: An organic light emitting diode display device and a method of fabricating the same are disclosed. In one embodiment, the organic light emitting diode display device includes i) a base substrate including a first device region and a first encapsulation region, ii) an organic light emitting diode (OLED) disposed on the first device region, iii) an inner filler formed over the OLED and the first device region, iv) a light transmission layer formed on the inner filler, v) an encapsulation substrate including a second device region and a second encapsulation region corresponding to the first device region and first encapsulation region, respectively, wherein the second device region is formed over the light transmission layer and vi) an encapsulation agent disposed on the first and second encapsulation regions, and configured to encapsulate the base substrate with the encapsulation substrate.Type: GrantFiled: October 21, 2009Date of Patent: November 13, 2012Assignee: Samsung Display Co., Ltd.Inventor: Hun Kim
-
Patent number: 8304976Abstract: A lighting system provides a system optical output, such as white light, as a function of an applied electrical signal. The system output can be characterized by a color temperature or other measure that represents the color or output spectrum of the output. The system is designed so that the color temperature changes as a function of the applied electrical signal. The changes in color temperature are at least in part a result of a phenomenon known as “current crowding”.Type: GrantFiled: June 25, 2010Date of Patent: November 6, 2012Assignee: 3M Innovative Properties CompanyInventor: Michael A. Haase
-
Patent number: 8304984Abstract: Disclosed is an organic electroluminescent element in which light extraction efficiency is improved without lowering the electrical conductivity or the transporting or blocking performance for electrons or holes in a transparent electrode or an organic layer. The organic electroluminescent element of the invention is characterized in that it comprises a transparent substrate and provided thereon, at least a first electrode section with a light transmission property, an organic light emission layer section and a second electrode section in this order, the first electrode section containing at least metal nanowires, wherein an average refractive index of the first electrode section is lower than that of the organic light emission layer section.Type: GrantFiled: September 15, 2009Date of Patent: November 6, 2012Assignee: Konica Minolta Holdings, Inc.Inventors: Hirokazu Koyama, Yoshiyuki Suzuri
-
Patent number: 8304979Abstract: A light emitting device (10) of the present invention includes luminescent particles (14) and a pair of electrodes (12, 16) for injecting an electric current into the luminescent particles (14). An inorganic hole transport material (15) is disposed between the electrodes (12, 16). The luminescent particles (14) are dispersed in the inorganic hole transport material (15). Conductive fine particles may be adhered to at least a part of the surfaces of the luminescent particles (14) for the purpose of achieving further high brightness and high efficiency.Type: GrantFiled: December 4, 2008Date of Patent: November 6, 2012Assignee: Panasonic CorporationInventors: Masayuki Ono, Shogo Nasu, Eiichi Satoh, Reiko Taniguchi, Takayuki Shimamura, Masaru Odagiri
-
Patent number: 8297793Abstract: Disclosed is a light emitting device and a method of manufacturing the same. The light emitting device comprises a substrate comprising a cavity, a multi-color light emitting unit on a first region of the cavity, and a white light emitting unit on a second region of the cavity.Type: GrantFiled: September 13, 2007Date of Patent: October 30, 2012Assignee: LG Innotek Co., Ltd.Inventor: Wan Ho Kim
-
Patent number: 8288942Abstract: A white light emitting solid-state lamp is disclosed having an output of at least 75 lumens per watt at 20 milliamps drive current. The lamp includes a light emitting diode, an encapsulant, and a header. The diode includes a conductive silicon carbide substrate for electrical contact and a Group III nitride active portion on the silicon carbide substrate for generating desired frequency photons under the application of current across the diode. The header includes a reflective cup for supporting the diode and for providing electrical contact to the diode and to the active portion. The encapsulant includes a phosphor, present in at least portions of the encapsulant for generating responsive frequencies when the phosphor is excited by the frequencies emitted by the diode.Type: GrantFiled: September 15, 2005Date of Patent: October 16, 2012Assignee: Cree, Inc.Inventor: James Ibbetson
-
Patent number: 8288784Abstract: An organic light emitting display device includes a substrate and a plurality of pixels on the substrate. The pixels include a plurality of first electrodes, a second electrode, a white light emitting layer, and a first thin film layer between the first electrodes and the second electrode. White light emitted from the white light emitting layer causes resonance to occur between the first electrodes and the second electrode.Type: GrantFiled: September 10, 2010Date of Patent: October 16, 2012Assignee: Samsung Display Co., Ltd.Inventor: Jae-Young Cho
-
Patent number: 8288943Abstract: The invention provides an illumination device (10) with a light emitting diode (20), a transmissive support (50) comprising a luminescent material (51), and a translucent exit window (60). The ratio of the diffuser cavity cross section (212) and LED cavity cross section (211) is larger than (1). With the proposed illumination device (10), the lamp may in particular look white when it is in the off-state and illuminated with white light. Other advantages are that an intrinsically efficient system may be provided and that a warm white option may be provided.Type: GrantFiled: April 1, 2009Date of Patent: October 16, 2012Assignee: Koninklijke Philips Electronics N.V.Inventors: Johannes Petrus Maria Ansems, Lars Rene Christian Waumans
-
Patent number: 8267733Abstract: A laminated structure is formed by placing a cover substrate over a device substrate with a projection structure in between in the vacuum atmosphere. Next, the laminated structure is taken out into the air in a state that a space between the device substrate and the cover substrate is maintained in the vacuum atmosphere. Subsequently, the portion of the organic layer formed on the auxiliary electrode is removed by irradiating laser light to the laminated structure. Since the space between the device substrate and the cover substrate is maintained in the vacuum atmosphere, even if the laser light is emitted to the laminated structure taken out into the air, the laser light is emitted to the portion of the organic layer formed on the auxiliary electrode in the vacuum atmosphere.Type: GrantFiled: May 16, 2008Date of Patent: September 18, 2012Assignee: Sony CorporationInventor: Nobuo Ozawa
-
Patent number: 8269409Abstract: The present invention comprises a process of mixing a luminous substance in powder form to a transferable grade molding compound in a pelletized or powder form, such as a clear epoxy, to derive a homogeneous mixture that can be pressed and sintered into solid pellets. The solid pellets are further processed so as to permit their deposition on and around a light emitting semiconductor driver so as to obtain a white light emitting semiconductor device. This white light emitting device can be used in a variety of lighting applications.Type: GrantFiled: March 14, 2005Date of Patent: September 18, 2012Assignee: Microsemi CorporationInventor: Stephen G. Kelly
-
Patent number: 8258690Abstract: The present invention is characterized by a DC-driven inorganic EL element useful for mobile and other applications, the EL element including at least plural electrode layers, and a light emitter layer made of an inorganic composition, which is provided between the electrode layers, wherein the attainted brightness in the DC drive is 10000 cd/m2 or more.Type: GrantFiled: October 11, 2005Date of Patent: September 4, 2012Assignee: Kuraray Co., Ltd.Inventors: Tadashi Ueda, Seikoh Yamauchi, Jiro Kanamori, Yoshisada Hayashi
-
Patent number: 8253326Abstract: A light-emitting device of the present invention includes: a light-emitting element; and a phosphor layer containing phosphors that absorb light from the light-emitting element and wavelength-convert the absorbed light to emit light. The phosphor layer has a structure in which the phosphors are disposed on an applied adhesive with a thickness equal to or less than an average particle size of the phosphors. A thickness of the phosphor layer is equal to or less than five times the average particle size of the phosphors, and an occupancy ratio of the phosphors in the phosphor layer is 50% or more. Further, the phosphors disposed on the adhesive has an adjusted particle size.Type: GrantFiled: July 20, 2010Date of Patent: August 28, 2012Assignee: Dowa Electronics Materials Co., Ltd.Inventors: Tsukasa Maruyama, Tetsuya Ikuta
-
Patent number: 8247959Abstract: Disclosed herein are solid state illumination systems which provide improved color quality and/or color contrast. The systems provide total light having delta chroma values for each of the fifteen color samples of the color quality scale that are preselected to provide enhanced color contrast relative to an incandescent or blackbody light source, in accordance with specified values which depend on color temperature. Illumination systems provided herein may comprise one or more organic electroluminescent element, or they may comprise a plurality of inorganic light emitting diodes, wherein at least two inorganic light emitting diodes have different color emission bands. Methods for the manufacture of illumination systems having improved color quality and/or color contrast are also provided.Type: GrantFiled: December 30, 2008Date of Patent: August 21, 2012Assignee: General Electric CompanyInventors: William Winder Beers, Gary Robert Allen
-
Patent number: 8242684Abstract: 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.Type: GrantFiled: September 27, 2010Date of Patent: August 14, 2012Assignee: Osram Sylvania Inc.Inventors: Alan Piquette, Madis Raukas
-
Patent number: 8242518Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: April 4, 2011Date of Patent: August 14, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
-
Patent number: 8242685Abstract: An organic electroluminescence device includes an organic electroluminescence element having a function layer interposed between a first electrode and a second electrode. The function layer includes at least an organic light emission layer. The electroluminescence device includes: partition walls which define concave portions and each of formation areas of the organic electroluminescence element within each of the concave portions to arrange the function layer within the concave portion; and auxiliary electrodes which are each arranged continuously on the partition wall and within the concave portion.Type: GrantFiled: April 8, 2009Date of Patent: August 14, 2012Assignee: Seiko Epson CorporationInventors: Yuji Chino, Suguru Akagawa
-
Patent number: 8237350Abstract: A light-emitting device includes a package having, on a surface thereof, a first portion surrounded by a second portion; a semiconductor blue color light-emitting element mounted on the first portion; a first transparent resin layer covering the semiconductor blue color light-emitting element and contacted with the first and second portions. The first transparent resin layer in cross section has an arch-like outer profile. A laminated body having in cross section an arch-like profile is formed on the first transparent resin layer with end faces of the laminated body being contacted with the second portion, and includes in order a red fluorescent layer, a yellow fluorescent layer, a second transparent resin layer and a green fluorescent layer, the second transparent resin layer having a center portion disposed between end face portions, the center portion having a larger thickness than thicknesses of the end face portions.Type: GrantFiled: January 6, 2011Date of Patent: August 7, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Iwao Mitsuishi, Shinya Nunoue, Yasushi Hattori
-
Patent number: 8237348Abstract: Disclosed is a light-emitting device including a light-emitting element emitting primary light, and a light converter absorbing a part of the primary light emitted from the light-emitting element and emitting secondary light having a longer wavelength than the primary light. The light converter contains a green light-emitting phosphor and a red light-emitting phosphor. The green light-emitting phosphor is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2 (Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: GrantFiled: February 6, 2009Date of Patent: August 7, 2012Assignee: Sharp Kabushiki KaishaInventors: Masatsugu Masuda, Kenji Terashima
-
Patent number: 8232721Abstract: An apparatus such as a light source is disclosed which has an OLED device and an index bridging elastomer disposed on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The elastomer bridges the refractive index between the substrate and an intended target for said apparatus.Type: GrantFiled: September 8, 2005Date of Patent: July 31, 2012Assignee: Osram Opto Semiconductors GmbHInventors: Wencheng Su, Benjamin Krummacher
-
Publication number: 20120187822Abstract: An optical component for an LED lighting arrangement comprises a mixture of a transparent material and one or more photoluminescent (phosphor) materials. The phosphor material has the property of emitting photoluminescent light when illuminated by light of a wavelength range 300 to 500 nm. The transparent material comprises a silicone or an epoxy. The mixture of the transparent material and the phosphor material can be provided as a layer on at least a part of a surface of the component. In some embodiments the component has a concave and/or convex surface and the layer containing the phosphor material is provided on at least a part of these surfaces.Type: ApplicationFiled: March 30, 2012Publication date: July 26, 2012Applicant: INTEMATIX CORPORATIONInventor: Yi-Qun Li
-
Patent number: 8221903Abstract: The invention pertains to new materials based on donor carbene intermediates for the improvement of electron injection and electron transport in organic electronic components like organic light-emitting diodes (OLED's), organic field effect transistors (OFET's), and components based on organic photovoltaics, in particular organic solar cells.Type: GrantFiled: August 29, 2006Date of Patent: July 17, 2012Assignee: Osram Opto Semiconductors GmbHInventor: Andreas Kanitz