Light Conversion Patents (Class 313/501)
  • Patent number: 10782611
    Abstract: A photosensitive composition, a quantum dot polymer composite pattern prepared therefrom, and a layered structure and an electronic device including the same. The photosensitive composition includes plurality of quantum dots; a luminescent material other than a quantum dot; a carboxylic acid group containing binder; a photopolymerizable monomer having a carbon-carbon double bond; and a photoinitiator, and the luminescent material comprises a fluorophore, a nanosized inorganic phosphor, or a combination thereof.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: September 22, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeyeon Yang, Eun Joo Jang, Hyo Sook Jang, Shin Ae Jun
  • Patent number: 10767111
    Abstract: A method is disclosed for forming a blended phosphor composition. The method includes the steps of firing precursor compositions that include europium and nitrides of at least calcium, strontium and aluminum, in a refractory metal crucible and in the presence of a gas that precludes the formation of nitride compositions between the nitride starting materials and the refractory metal that forms the crucible. The resulting compositions can include phosphors that convert frequencies in the blue portion of the visible spectrum into frequencies in the red portion of the visible spectrum.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: September 8, 2020
    Assignee: CREE, INC.
    Inventors: Brian T. Collins, Christopher P. Hussell, David T. Emerson, Ronan P. Le Toquin
  • Patent number: 10768470
    Abstract: A color conversion panel includes a color base substrate including a first transmissive area, a second transmissive area and a third transmissive area; a light blocking pattern on the color base substrate and defining the first transmissive area, the second transmissive area, and the third transmissive area; a first color filter in the first transmissive area and the second transmissive area; a first color conversion layer on the first color filter at the first transmissive area; a second color conversion layer on the first color filter in the second transmissive area; and a second color filter on the first transmissive area, the second transmissive area, and the third transmissive area. The first color conversion layer and the second color conversion layer are each between the first color filter and the second color filter.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: September 8, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyoungwon Park, Soodong Kim, Minki Nam, Sungwoon Kim
  • Patent number: 10756304
    Abstract: An organic light-emitting display panel and a display device are provided. The light-emitting display panel includes a first electrode layer including a reflective electrode, and a second electrode layer arranged opposite to the first electrode layer and including a semi-reflective electrode. The light-emitting display panel also includes a light-emitting material layer between the two electrode layers. The second electrode layer has a first side facing the light-emitting material layer and an opposing second side. Further, the light-emitting display panel includes a light-coupling layer group disposed on the opposing second side of the second electrode layer. The light-coupling layer group includes at least one light-coupling stacked layer including a first light-coupling layer arranged close to the second electrode layer and a second light-coupling layer arranged far away from the second electrode layer.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: August 25, 2020
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Guofeng Zhang, Yingteng Zhai, Haijing Chen
  • Patent number: 10754220
    Abstract: A display device includes: a display panel and a photonic crystal grating disposed on a light-emitting side of the display panel; wherein the photonic crystal grating has a fully light-transmitting state and a grating state used for 3D display.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: August 25, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Pengming Chen
  • Patent number: 10756303
    Abstract: Disclosed is a light emitting device including a plurality of organic electroluminescent sections each including a first reflective layer, an organic light emitting layer and a second reflective layer in this order, and a light extraction surface from which light emitted from each of the organic electroluminescent sections through the second reflective layer is extracted. The second reflective layer includes a first metal layer, a transparent layer and a second metal layer in this order from the organic light emitting layer side, and in each of the organic electroluminescent sections, a microcavity structure is formed by a structure that includes a first reflective interface on the organic light emitting layer side of the first reflective layer, a second reflective interface on the organic light emitting layer side of the first metal layer, and a third reflective interface on the organic light emitting layer side of the second metal layer.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: August 25, 2020
    Assignee: JOLED INC.
    Inventor: Toshihiro Fukuda
  • Patent number: 10746377
    Abstract: A short wavelength infrared (SWIR) energy emitting system or material for producing SWIR energy from an emission source emitting electromagnetic energy. The SWIR energy system or material comprises a phosphor material, an electromagnetic energy blocking member, a substrate for delivering the system or material to an electromagnetic energy emission source, and optionally, a securing member. The SWIR energy system or material may be in the form of a tape, sheet, or other laminar material capable of producing short wave infrared emission when excited at wavelengths shorter than that of the emission.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: August 18, 2020
    Assignee: Cyalume Technologies, Inc.
    Inventors: William R. Palmer, Stephen L. Palmer
  • Patent number: 10698309
    Abstract: A light source module of a photo printer includes a first micro light source, a second micro light source, a rod lens array and a microlens. The first micro light source emits a first light beam. The second micro light source emits a second light beam. The rod lens array is arranged between the first micro light source, the second micro light source and a film paper. The microlens is arranged between the first micro light source, the second micro light source and the rod lens array. The microlens is used for converging the projection angles of the first light beams and the second light beam. The microlens has an optical axis. The second micro light source is arranged along the optical axis. The first micro light source is arranged beside a first side of the optical axis.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: June 30, 2020
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Yun-Yi Lin, Mu-Jung Wang
  • Patent number: 10700303
    Abstract: An organic light-emitting diode including an anode, a cathode, and a luminescent layered structure is provided. The luminescent layered structure is disposed between the anode and the cathode. The luminescent layered structure has a luminescent layer and a sensitizer layer. The luminescent layer has a luminescent-layer ground state, a luminescent-layer singlet state and a luminescent-layer triplet state, in which two times of the luminescent-layer triplet state is higher than the luminescent-layer singlet state. The sensitizer layer has a sensitizer-layer triplet state, which is between the luminescent-layer singlet state and the luminescent-layer triplet state. The molecules of the sensitizer layer at the sensitizer layer triplet layer transfers energy to the molecules of the luminescent layer at the luminescent-layer triplet state and triggers triplet-triplet annihilation upconversion in the luminescent layer such that the luminescent layer emits light of a first color.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: June 30, 2020
    Assignees: YUAN ZE UNIVERSITY, NICHEM FINE TECHNOLOGY CO, LTD., WISECHIP SEMICONDUCTOR INC., TETRAHEDRON TECHNOLOGY CORPORATION, SHINE MATERIALS TECHNOLOGY CO., LTD.
    Inventors: Jiun-Haw Lee, Tien-Lung Chiu, Chia-Hsun Chen, Pei-Hsi Lee
  • Patent number: 10687478
    Abstract: A lighting array for providing artificial light include a square or rectangular frame on which a plurality of chip on board (COB) units are mounted. Each COB units includes a light emitting diode (LED) element. The COB units are mounted in an arrangement of columns and rows, where there are an odd number of columns defined, and COB units on odd numbered columns do not share rows with COB units positioned on even numbered columns. The arrangement achieves a greater uniformity of light intensity over a given growing area compared to conventional lighting systems, at similar light output levels.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: June 23, 2020
    Inventors: Austin Rouse, Anne-Marie Rouse
  • Patent number: 10670940
    Abstract: A display panel including a substrate, a display device, a dielectric layer, and an optical resonance structure is provided. The substrate has a layout area and a light transmitting area located outside the layout area. The display device is disposed on the layout area of the substrate. The display device includes a first display electrode, a second display electrode, and a display media layer deposited between the first display electrode and the second display electrode. The dielectric layer is disposed on the substrate and covers the display device. The optical resonance structure is disposed on the dielectric layer and distributed correspondingly to the display device. The optical resonance structure includes a first transflective layer and a second transflective layer stacked on the display device and separated from each other.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 2, 2020
    Assignees: Industrial Technology Research Institute, Intellectual Property Innovation Corporation
    Inventors: Chih-Chia Chang, Yi-Hsiang Huang, Kai-Ming Chang, Kuan-Ting Chen
  • Patent number: 10662375
    Abstract: A method for producing a nitride fluorescent material having high emission luminance can be provided. The method includes heat-treating a raw material mixture containing silicon nitride, silicon, an aluminium compound, a calcium compound, and a europium compound.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: May 26, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Kazuya Nishimata, Hiroyuki Watanabe, Shoji Hosokawa
  • Patent number: 10605422
    Abstract: An organic light-emitting diode comprising an organic layer sequence, a radiation exit area and an encapsulation. The organic layer sequence comprises at least one radiation-emitting region which generates electromagnetic radiation in the spectral range from infrared radiation to UV radiation during operation. The radiation exit area is structured, so that the electromagnetic radiation has a directional emission profile. The encapsulation forms a seal of the organic layer sequence against environmental influences.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: March 31, 2020
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Ulrich Kastner-Jung, Markus Klein, Stan Maes, Romana Sigl, Annette Haid, Stephan Lintner, Julian Herget, Gregor Matjan
  • Patent number: 10586890
    Abstract: An opto-electronic device with two-dimensional injection layers is described. The device can include a semiconductor structure with a semiconductor layer having one of an n-type semiconductor layer or a p-type semiconductor layer, and a light generating structure formed on the semiconductor layer. A set of tilted semiconductor heterostructures is formed over the semiconductor structure. Each tilted semiconductor heterostructure includes a core region, a set of shell regions adjoining a sidewall of the core region, and a pair of two-dimensional carrier accumulation (2DCA) layers. Each 2DCA layer is formed at a heterointerface between one of the sidewalls of the core region and one of the shell regions. The sidewalls of the core region, the shell regions, and the 2DCA layers each having a sloping surface, wherein each 2DCA layer forms an angle with a surface of the semiconductor structure.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 10, 2020
    Assignee: Sensor Electronic Technology, Inc.
    Inventors: Grigory Simin, Michael Shur, Alexander Dobrinsky
  • Patent number: 10582842
    Abstract: A light source apparatus irradiates an observation target with first light in a wavelength region which does not include a wavelength region where an absorption peak of a target substance included in the observation target is present and second light in a wavelength region where the absorption peak is present. An image acquiring circuit includes an emphasized image information generating circuit which generates emphasized image information on the basis of first image information acquired by an imaging apparatus when the observation target is irradiated with the first light and second image information acquired by the imaging apparatus when the observation target is irradiated with the second light.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 10, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuaki Tamura, Takeshi Ito
  • Patent number: 10584853
    Abstract: A light-emitting device includes a plurality of semiconductor laser elements including a first semiconductor laser element, and a plurality of reflectors including a first reflector for reflecting light emitted from the first semiconductor laser element, each of reflectors reflecting light emitted from corresponding one of the plurality of semiconductor laser elements. Light emitted from the first semiconductor laser element passes through a gap between two of the plurality of reflectors excluding the first reflector and reaches the first reflector. Lights emitted from the plurality of semiconductor laser elements are extracted in a direction different than an incident direction thereof toward the plurality of reflectors.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: March 10, 2020
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Masao Kamiya, Masaaki Osawa, Satoshi Wada, Yuhki Kawamura, Kento Hayashi
  • Patent number: 10573790
    Abstract: An optoelectronic arrangement having a radiation conversion element and a method for producing a radiation conversion element are disclosed. In an embodiment, an optoelectronic arrangement includes a semiconductor chip having an active region configured to generate radiation, a radiation conversion element arranged downstream of the semiconductor chip in an emission direction and a reflective polarization element arranged downstream of the radiation conversion element in the emission direction. The radiation conversion element has a plurality of conversion elements, each of which has an axis of symmetry, the spatial orientation of the axes of symmetry has a preferred direction and a radiation emitted by the radiation conversion element has a preferred polarization. The reflective polarization element largely allows radiation with the preferred polarization to pass through and largely reflects radiation polarized perpendicularly to the preferred polarization.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: February 25, 2020
    Assignee: OSRAM OLED GMBH
    Inventors: Wolfgang Mönch, Britta Göötz, Frank Singer, Martin Straßburg, Tilman Schimpke
  • Patent number: 10539297
    Abstract: Light modules for converting the wavelength of light are described herein along with methods for using and making such modules and devices incorporating such modules.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: January 21, 2020
    Assignee: CRYSTALPLEX CORPORATION
    Inventors: Gregory Miller, William R. Freeman
  • Patent number: 10497651
    Abstract: An encapsulated integrated circuit is provided that includes an integrated circuit (IC) die. An encapsulation material encapsulates the IC die. An electromagnetic interference (EMI) shield is provided by a photonic bandgap (PBG) structure that is included within the encapsulation material. The PBG structure is configured to have a photonic bandgap with a frequency range approximately equal to a range of frequencies that may cause EMI.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 3, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Benjamin Stassen Cook, Daniel Lee Revier
  • Patent number: 10488018
    Abstract: An integrated light source includes: an emissive radiation source having a first spectrum; an optical element located to direct emissions from the emissive radiation source; a volumetric spectrum converter located to convert emissions directed from the emissive radiation source to emissions having a second spectrum different from the first spectrum; an optical reflector located about the converter; an output filter, the reflector being located to reflect the converter emissions towards the output filter; and a package body having an internal cavity containing the emissive radiation source, optical element, converter, reflector, and filter, wherein desired light radiates from the cavity through the filter.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: November 26, 2019
    Assignee: INFINITE ARTHROSCOPY, INC. LIMITED
    Inventors: Eugene Malinskiy, Ilya Malinskiy, Daniel Dudley, Howard Fein
  • Patent number: 10451880
    Abstract: A display device includes a frame and an image display device. The image display device includes an image forming device, a light guide device, and a lens system. The image forming device includes light emitting elements 300 arranged in a two-dimensional matrix. Each of the light emitting elements 300 has a laminated structure 301 including at least one layer of light emitting laminates 310, 320, and 330 each including a first electrode, a second electrode, and a light emitting layer provided between the first electrode and the second electrode. The laminated structure 301 has a through hole 360 through which light from the light emitting layer is emitted toward the lens system. An antireflection layer 370 is formed in a portion of the laminated structure facing the lens system.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: October 22, 2019
    Assignee: SONY CORPORATION
    Inventor: Kazuma Aiki
  • Patent number: 10439109
    Abstract: A method of combining a first phosphor material and a second phosphor material and devices made therefrom. The method includes providing a first phosphor material, combining the first phosphor material with a host matrix to create a first phosphor mixture, curing the first phosphor mixture at one or more predetermined temperatures, and depositing the cured first phosphor mixture onto a substrate having a second phosphor material. The first phosphor material includes red emission phosphor particles and the second phosphor material includes yellow emission phosphor particles and the host matrix includes a silsesquioxane host material, silsesquioxane-silicate host material, a sol gel host material, or an alkali/silicate water glass host material.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: October 8, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Nicholas Francis Borrelli, Nadja Teresia Lonnroth, Wageesha Senaratne
  • Patent number: 10417943
    Abstract: A point-of-sale advertising system for use with a display case having a front glass sheet positioned in front of a cavity for accepting goods, the system containing a transparent LCD positioned behind the front glass sheet, and a plurality of LEDs positioned adjacent to one pair of opposing edges of the LCD and arranged so that light which is emitted from the LEDs is directed backwards towards the cavity. Further embodiments may also contain a door assembly and frame surrounding the front glass sheet and LCD, a switch positioned to determine when the door assembly is open or closed, and electrical circuitry adapted to turn off the LEDs when the door is open and turn on the LEDs when the door is closed.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: September 17, 2019
    Assignee: Manufacturing Resources International, Inc.
    Inventor: William Dunn
  • Patent number: 10353223
    Abstract: A backlight assembly includes a light source portion including a plurality of light sources. The light sources are configured to emit light. A wavelength conversion member is disposed on the light source portion. The wavelength conversion member is configured to convert a wavelength of light emitted from the light source portion. The wavelength conversion member includes a first substrate disposed on the light source portion, a second substrate disposed on the first substrate, and a plurality of wavelength conversion layers interposed between the first substrate and the second substrate. Each of the plurality of wavelength conversion layers correspond to a light source of the plurality of light sources.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 16, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hoon Kim, Dong Hyeon Lee, Seung Hwan Baek, Ju Young Yoon, Han Moe Cha, Young Jun Choi
  • Patent number: 10355181
    Abstract: A light-emitting device includes: a base member having a conductive pattern; a light-emitting element arranged on the base member so as to be electrically connected to the conductive pattern; and a dielectric multi-layer film located on an upper surface of the light-emitting element. The dielectric multi-layer film has a first spectral reflectivity in an emission peak wavelength region of the light-emitting element and a second spectral reflectivity in a region that is located at a longer wavelength side of the emission peak wavelength region by 50 nm, and the second spectral reflectivity is greater by 10% or more than the first spectral reflectivity.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: July 16, 2019
    Assignee: NICHIA CORPORATION
    Inventor: Motokazu Yamada
  • Patent number: 10330964
    Abstract: The present disclosure provides a color changing device, a display module, a manufacturing method thereof, and a display control method. The color changing device includes a plurality of color changing blocks and a color control circuit connected to the plurality of color changing blocks and configured to control each color changing block to exhibit a corresponding color. Each color changing block includes a transparent electrode, a transparent insulation layer arranged on the transparent electrode and provided with a groove, gold nanoparticles filled in the groove and electrically connected to the transparent electrode, and a plurality of electrode sheets coated with silver ions and covering the groove. The electrode sheets of different color changing blocks are insulated from each other.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 25, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Yanqiu Li, Hetao Wang
  • Patent number: 10327293
    Abstract: A display device includes a substrate, a first light emitting element, and a second light emitting element. The substrate includes at least one pixel area. The first light emitting element and the second emitting element are disposed in the pixel area. The first light emitting element emits light of a first color and has a first luminous efficiency-injection current density function. The second light emitting element emits light of a second color and has a second luminous efficiency-injection current density function, intersected with the first luminous efficiency-injection current density function to define a critical transform current density. The light of the first color and the light of the second color have a same color system.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 18, 2019
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Kuo-Lung Lo, Chin-Yuan Ho, Chen-Chi Lin
  • Patent number: 10312304
    Abstract: An organic light-emitting diode panel and a manufacturing method using the same are provided in the present invention. The OLED panel includes at least a pixel. The pixel includes an anode conducting layer, an insulation layer, an emitting layer (EML), a cathode layer and a reference voltage layer. The anode conducting layer is disposed on a transparent substrate. The insulation layer is disposed on the anode conducting layer and has a first cavity and a second cavity, wherein there is a distance between the first anode layer and the bottom of second cavity. There are a hole injection layer (HIL) and a hole transmission layer (HTL). The HIL is disposed on the first anode conducting layer. The HTL is disposed on the HIL. There are a cathode layer, an electronic injection layer (EIL) and an electronic transmission layer (ETL) in the second cavity. The cathode layer is exposed by the bottom of the second cavity. The EIL is disposed on the cathode layer. The ETL is disposed on the EIL.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: June 4, 2019
    Assignee: FOCALTECH SYSTEMS CO., LTD.
    Inventor: Chun-Fu Wang
  • Patent number: 10288939
    Abstract: The present disclosure discloses a backlight and a manufacturing method thereof, a light guide plate and a manufacturing method thereof and a display device. The backlight is a direct type backlight, and the backlight includes: a light guide plate having a main body of a plate shape, a plurality of light emitting units that are placed toward to a plane side of the light guide plate; where the light guide plate comprises a Quantum Dot (QD) layer on a first surface of the main body wherein the first surface is substantially flat.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: May 14, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Huijuan Wang, Xue Dong, Yonglian Qi, Fei Wang, Zhenhua Lv, Hongshu Zhang
  • Patent number: 10264226
    Abstract: Light is made more expressive by a simple configuration of an illumination device. An illumination device (10) includes: a projection section on which beams of light which beams are emitted from a first LED (1A) and a second LED (1B), respectively, are to be projected; and a light emission control section (3) configured to control the first LED (1A) and the second LED (1B) so as to temporally change intensities of the beams of light. The first LED (1A) and the second LED (1B) are provided so that the beams of light which beams are emitted from the first LED (1A) and the second LED (1B), respectively, overlap in part in the projection section, and assuming that a part of the projection section in which part the beams of light overlap is an overlapping part, the light emission control section (3) changes the intensities of the beams of light so that at least any one of a size, a location, and a shape of the overlapping part is temporally changed.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: April 16, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Arai
  • Patent number: 10253950
    Abstract: A method for producing a multifunctional layer, a method for producing an electrophoresis substrate, and a method for producing a converter plate and an optoelectronic component are disclosed. In an embodiment the method includes providing an electrophoresis substrate comprising a carrier having a front side and a back side, wherein a first electrically conductive layer and a second electrically conductive layer are located on the front side, electrophoretically depositing a first material onto the first electrically conductive layer, electrophoretically depositing a second material onto the second electrically conductive layer and arranging a filler material between the first material and the second material, wherein the filler material forms a common boundary surface with the first material and the second material.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: April 9, 2019
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Ion Stoll, Frank Singer, Georg Dirscherl
  • Patent number: 10249152
    Abstract: The described embodiments relate generally to an accessory device for a tablet device. The accessory device takes the form of a flexible screen protector that can be disposed over a display portion of the tablet device. Because the flexible screen protector covers the display of the tablet there is no visual way for the tablet to provide notifications to the user while the screen protector overlays it. By providing a data and power connection between the tablet and the accessory device, the processor of the tablet device can command illumination elements disposed in the accessory device to be illuminated in any of a number of illumination states. Each of the illumination states can be associated with an operating state of the tablet device thereby allowing the tablet device to visually communicate operating state information while the display is covered.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: April 2, 2019
    Assignee: Apple Inc.
    Inventors: Jared A. Sartee, Justin Richard Wodrich
  • Patent number: 10180630
    Abstract: An illumination system has a microLED array 502. The microLED array 502 is imaged or placed very close to a phosphor coated glass disc 504 which upconverts the light from the microLED array into a narrow band emission. The plate has at least two different photoluminescent materials arranged to be illuminated by the microLED array and to thereby emit output light. The different photoluminescent materials have different emission spectral properties of the output light, e.g. different center wavelength and optionally different bandwidth. Illumination of different photoluminescent materials by the illumination sources is selectable, by selective activation of the microLEDs or by movement of the photoluminescent materials relative to the illumination sources, to provide different illumination of the different photoluminescent materials. This provides tunable spectral properties of the output light.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: January 15, 2019
    Assignee: ASML Netherlands B.V.
    Inventors: Teunis Willem Tukker, Nitesh Pandey, Coen Adrianus Verschuren
  • Patent number: 10181500
    Abstract: Disclosed are a display device and a method of manufacturing the same, which prevent a reduction in an aperture ratio and occurrence of color mixing caused by a process error of a black matrix and a color filter. The display device includes a plurality of color filters, an inorganic layer covering the plurality of color filters, and a black matrix disposed on the inorganic layer between the plurality of color filters.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: January 15, 2019
    Assignee: LG Display Co., Ltd.
    Inventor: JongSung Kim
  • Patent number: 10164155
    Abstract: A light emitting device is described. The light emitting device includes a substrate and a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region and has a first surface adjacent the substrate and a second surface opposite the first surface. The first surface of the semiconductor structure multiple cavities formed therein, which extend into at least one of the n-type region and the p-type region. The cavities are spaced apart and lined by a dielectric layer. At least a portion of the second surface is roughened to form multiple features spaced apart at a distance smaller than a distance between each of the cavities formed in the first surface to enhance extraction of light emitted from the light emitting layer. At least one contact is disposed between the first surface of the semiconductor structure and the substrate.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 25, 2018
    Assignee: Lumileds LLC
    Inventors: Jonathan J. Wierer, Aurelien Jean Francois David, Henry Kwong-Hin Choy
  • Patent number: 10128220
    Abstract: The present disclosure relates to a display substrate, a manufacturing method thereof, and a display device. The method of manufacturing a display substrate includes assembling LED microparticles of each color category onto a printing template corresponding to a respective color category; the surface of the printing template being provided with assembling grooves arranged in such a manner that sub-pixels of a corresponding color category are arranged; transferring the LED microparticles on each printing template onto a same base substrate respectively to form on the base substrate an array of LED microparticles arranged in a same manner as the sub-pixels.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: November 13, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Guangkui Qin
  • Patent number: 10109691
    Abstract: An organic EL display panel manufacturing method including: preparing a substrate; forming at least first electrodes on the substrate; forming, by performing photolithography on the substrate having the first electrodes, a bank layer made of a photoresist and having apertures corresponding one-to-one with the first electrodes; forming a functional layer in each of the apertures by applying an ink containing a functional material to the aperture and drying the applied ink; and forming at least a second electrode on the functional layer. The forming of the bank layer includes: applying the photoresist to the substrate having the first electrodes; forming apertures corresponding one-to-one with the first electrodes in the photoresist by performing exposure using a mask and then developing the photoresist; after forming the apertures, performing exposure of the photoresist having the apertures; after performing the exposure of the photoresist having the apertures, baking the photoresist.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: October 23, 2018
    Assignee: JOLED INC.
    Inventors: Kenichi Nendai, Nobuto Hosono
  • Patent number: 10081764
    Abstract: Tellurium compound nanoparticles, including: an element M1 where M1 is at least one element selected from Cu, Ag, and Au; an element M2 where M2 is at least one element selected from B, Al, Ga, and In; Te; and optionally an element M3 where M3 is at least one element selected from Zn, Cd, and Hg; wherein a crystal structure of the tellurium compound nanoparticles is a hexagonal system, the tellurium compound nanoparticles are of a rod shape and have an average short-axis length of 5.5 nm or less, and when irradiated with light at a wavelength in a range of 350 nm to 1,000 nm, the tellurium compound nanoparticles emit photoluminescence having a wavelength longer than the wavelength of the irradiation light.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: September 25, 2018
    Assignees: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, NICHIA CORPORATION
    Inventors: Tsukasa Torimoto, Tatsuya Kameyama, Yujiro Ishigami, Kouta Sugiura, Daisuke Oyamatsu
  • Patent number: 10036516
    Abstract: The present invention discloses an LED lamp, which includes an LED light source module including at least one group of LED light source components, and further includes three drive circuits and a control circuit. The LED light source components include a first, a second, and a third LED light source. The first light source includes a first blue LED chip, a green phosphor is coated on the first blue LED chip. The second light source includes a second blue LED chip, a yellow phosphor is coated on the second blue LED chip. The third light source includes a third red LED chip. The control circuit determines drive currents of various LED light sources and drives the LED light sources through the drive circuits.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: July 31, 2018
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Jianhua Yu, Riguang Chen, Xie Feng, Lei E
  • Patent number: 9985182
    Abstract: Provided is a light-emitting apparatus including a board, a resin frame fixed on the board, sets of light-emitting elements mounted in a region on the board surrounded by the resin frame, wherein the light-emitting elements configuring each set are connected in series to each other. The light-emitting apparatus further includes connection electrodes provided on the board and electrically connected to the light-emitting elements and capable of supplying a drive current selectively to the sets of light-emitting elements, and a sealing resin which includes a phosphor mixed therein and excited by light from the light-emitting elements, and is filled so as to bury the region on the board, to seal integrally the light-emitting elements. The thickness of the sealing resin immediately above the light-emitting elements differs for the respective sets, and thereby, a chromaticity of light emitted from the sealing resin differs when each set of light-emitting elements emits the light singly.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 29, 2018
    Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Yuka Watanabe, Takakazu Yano
  • Patent number: 9985187
    Abstract: A method of manufacturing a light emitting device, includes: mounting an LED chip on a substrate; forming a translucent sealing layer for sealing the LED chip; forming a protective layer on the sealing layer; forming a groove, which penetrates the substrate and the sealing layer, using a blade from a side opposite to the side of the substrate mounted with the LED chip, the groove being formed to extend to a lower surface or an inside of the protective layer; filling the groove with a reflector material; and removing and separating a portion of the protective layer in which at least the groove is formed, wherein the blade has a shape tapered toward an edge.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 29, 2018
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Yosuke Tsuchiya, Hiroyuki Tajima, Toshiaki Mori
  • Patent number: 9944851
    Abstract: A method for producing a nitride fluorescent material having high emission luminance can be provided. The method includes heat-treating a raw material mixture containing silicon nitride, silicon, an aluminum compound, a calcium compound, and a europium compound.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: April 17, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Kazuya Nishimata, Hiroyuki Watanabe, Shoji Hosokawa
  • Patent number: 9929321
    Abstract: The embodiment of the present disclosure provides a phosphor improved in the emission intensity maintenance ratio without impairing the emission intensity. The phosphor is a silicofluoride phosphor and shows an IR absorption spectrum satisfying the conditions of 0?I2/I1?0.01 and 6.7?(I3/I1)/CMn. In those conditional formulas, I1, I2 and I3 are intensities of the maximum peaks in the ranges of 1200 to 1240 cm?1, 3570 to 3610 cm?1 and 635 to 655 cm?1, respectively, and CMn is a weight percent of Mn contained the phosphor.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: March 27, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yumi Fukuda, Keiko Albessard, Yasushi Hattori, Seiichi Suenaga
  • Patent number: 9920891
    Abstract: A light source using a wavelength conversion member is increased in brightness. A wavelength conversion element 11 includes a plurality of wavelength conversion members 12 bundled together, each containing a dispersion medium and phosphor powder dispersed in the dispersion medium.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: March 20, 2018
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Masaaki Kadomi, Yoshimasa Yamaguchi, Takashi Nishimiya
  • Patent number: 9899455
    Abstract: An organic light emitting diode display includes: a first organic light emitting element configured to emit light having a first wavelength; and a second organic light emitting element configured to emit light having a second wavelength substantially shorter than the first wavelength. The first organic light emitting element includes a first electrode, and the second organic light emitting element includes a second electrode having substantially higher reflectance for the light having the second wavelength than the first electrode.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: February 20, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byeong-Hee Won, Eun Jin Sung, Jong In Baek
  • Patent number: 9893138
    Abstract: A display panel includes a substrate, a plurality of first electrode series, a plurality of first electrode series and a plurality of conducting wires. The substrate is divided into a first display area and a second display area. The first display area and the second display area are respectively divided into light emitting zones and interval zones. The first electrode series are disposed in the first display area and the second display area. The second electrode series are disposed in the first display area and the second display area. Each first electrode series extends along a first direction. Each second electrode series extends along a second direction. The connection portion of each first electrode series extends into the interval zone of the first display area. The conducting wires are respectively coupled to the second electrode series in the first display area.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: February 13, 2018
    Assignee: RITDISPLAY CORPORATION
    Inventor: Chih-Yen Lee
  • Patent number: 9893285
    Abstract: A method of manufacturing an organic light-emitting display apparatus using a light-blocking photoresist layer which minimizes damage to an intermediate layer, including an emission layer, during a process for manufacturing the organic light-emitting display apparatus.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: February 13, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Waljun Kim, Yeonhong Kim, Junghyun Kim, Jongyun Kim, Sungeun Lee, Kwangyoung Choi
  • Patent number: 9869460
    Abstract: A lighting device that includes a first panel of light sources, where the first panel has a first edge. The lighting device can also include a second panel of light sources, where the second panel has a second edge, where the second edge of the second panel of light sources is mechanically coupled to the first edge of the first panel of light sources. The first panel of light sources and the second panel of light sources can form an angle relative to each other. Adjusting the angle can adjust the light output from the light sources. Such an angle can be formed based on a target level of light received by a target area.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: January 16, 2018
    Assignee: Cooper Technologies Company
    Inventors: Joseph Michael Manahan, Richard Rothenberger, Grant L. Gawronski
  • Patent number: 9812531
    Abstract: A light emitting device package can include a sub-mount having a first surface, a second surface, a bottom surface and a cavity; a first layer on the first surface; a second layer on the second surface; a third layer on the bottom surface; a light emitting device on the first layer and including a supporting layer including an anti-diffusion layer, a first electrode on the supporting layer, a semiconductor light emitting structure electrically connected to the first electrode, and a second electrode electrically connected to the semiconductor light emitting structure, in which the first and second electrodes electrically connect to the first layer and the second layer, respectively, and the semiconductor light emitting structure includes a light extraction structure; an ESD property improving diode on the second surface, electrically connected to the second layer and arranged a distance apart from the light emitting device, and a lens on the sub-mount.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: November 7, 2017
    Assignees: LG ELECTRONICS INC., LG INNOTEK CO., LTD.
    Inventors: Jun Ho Jang, Geun Ho Kim
  • Patent number: RE47591
    Abstract: An LED lamp provides a strong red color with a natural appearance. The LED lamp is provided with an LED module and a filter. The LED module includes a blue LED with a main emission peak in the 440 nm to 460 nm wavelength band, a green/yellow phosphor that is excited by light emitted by the blue LED, and a red phosphor that is excited by light emitted by at least one of the blue LED and the green/yellow phosphor. The filter reduces the spectral radiation intensity of at least a portion of the 570 nm to 590 nm wavelength band among light emitted by the LED module.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 3, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoko Matsubayashi, Hiroshi Yagi, Masanori Shimizu, Yoshio Manabe, Atsushi Motoya, Kazuhiro Matsuo, Toshio Mori