Light Conversion Patents (Class 313/501)
  • 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: 9747838
    Abstract: A pixel may include an organic light emitting diode (OLED) with a cathode electrode coupled to a second power source, a first transistor with a first electrode coupled to a data line, with a second electrode coupled to a first node, the first transistor being turned on when a scan signal is supplied to a scan line, a first capacitor coupled between the first node and a third power source to charge a first capacitor voltage corresponding to a data signal supplied from the data line, and a pixel circuit charged by the first capacitor voltage to supply current corresponding to a charged first power source voltage from a first power source to the second power source via the OLED.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: August 29, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chul-Kyu Kang
  • Patent number: 9746757
    Abstract: The present disclosure provides a display panel, including: a reflector; a phase retarder configured to change a polarization direction of a light beam passing through the phase retarder; a light-absorbing black matrix configured to absorb the light beam; and a polarization scattering film. After passing through the polarization scattering film, a polarized light beam from a projector is transmitted along an original light path, then the polarized light beam is transmitted through the phase retarder, reflected by the reflector and directed again to the polarization scattering film so as to be scattered. After passing through the polarization scattering film, a light beam with a polarization direction different from the polarized light beam from the projector is scattered by the polarization scattering film and then absorbed by the light-absorbing black matrix.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: August 29, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Guangkui Qin
  • Patent number: 9741698
    Abstract: A light-emitting device includes a substrate, a first light-emitting element mounted on the substrate, an annular transparent dam formed on the substrate so as to surround the first light-emitting element, a second light-emitting element that is mounted on the substrate so as to be embedded in an interior of the dam and that has a shorter peak emission wavelength than that of the first light-emitting element, and a sealing material filled inside the dam so as to seal the first light-emitting element.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: August 22, 2017
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Shota Shimonishi, Kazuhiro Sakai, Shigeo Takeda, Tomohiro Miwa
  • Patent number: 9728685
    Abstract: A light emitting device includes a base that has an element mounting surface, a light emitting element that is mounted on the element mounting surface and that has maximum light intensity in a directly upward direction, and a coating member that contains a fluorescent body that is excited by light from the light emitting element, and that is constituted by a single layer that coats an upper part of the light emitting element. The fluorescent body exists at a position other than directly above the light emitting element.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: August 8, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Daisuke Iwakura, Yusaku Achi
  • Patent number: 9719660
    Abstract: Systems and methods to provide multiple channels of light to form a blended white light output, the systems and methods utilizing recipient luminophoric mediums to alter light provided by light emitting diodes. The predetermined blends of luminescent materials within the luminophoric mediums provide predetermined spectral power distributions in the white light output.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: August 1, 2017
    Assignee: EcoSense Lighting Inc.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • Patent number: 9690037
    Abstract: A liquid crystal display device including a backlight unit and a fluorescent film, and a boundary fluorescent body is described.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: June 27, 2017
    Assignee: LG Display Co., Ltd.
    Inventor: Jung-Hyun Ham
  • Patent number: 9685486
    Abstract: A display may have an array of pixels formed from organic light-emitting diodes of different colors. Each organic light-emitting diode may have an anode, a cathode, and an emissive layer between the anode and cathode. To prevent undesired color shifts with off-axis viewing angles, evaporated color filters may be formed on the cathode in alignment with the light-emitting diodes. The color filters may include red color filters that overlap the red diodes but not the green and blue diodes, may include red, blue, and green filters that overlap respective red, green, and blue diodes, or may include an orange filter that overlaps red and green diodes and a blue filter that overlaps blue diodes. The color filters may serve as a capping layer for the diodes or a capping layer that is separate from the color filters can be incorporated into the display.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 20, 2017
    Assignee: Apple Inc.
    Inventors: Kwang Ohk Cheon, Rui Liu, Cheng Chen
  • Patent number: 9679952
    Abstract: An organic electroluminescence display device including pixels, a first bank provided between the pixels and covering a periphery edge part of a pixel electrode, a second bank provided on a first upper surface of the first bank and including a second upper surface and a first side surface, an auxiliary wiring provided on the second upper surface and including a third upper surface and a second side surface, an organic electroluminescence layer in contact with the pixel electrode, the first and second banks, and the auxiliary wiring, a common pixel electrode bridging the pixels, the organic electroluminescence layer includes a first region in contact with the pixel electrode, the first upper surface and the first side surface, and a second region in contact with the auxiliary wiring and separated from the first region, and the common pixel electrode is in contact with the second side surface.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: June 13, 2017
    Assignee: Japan Display Inc.
    Inventor: Toshio Miyazawa
  • Patent number: 9680069
    Abstract: A light emitting device package is provided. The package includes a light emitting device including a substrate, and a light emitting structure having a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer stacked on the substrate; and a wavelength conversion film disposed in a path of light emitted by the light emitting device and having phosphor layers stacked on each other. A portion of the phosphor layers includes phosphor structures including a wavelength conversion material receiving light emitted from the light emitting device and converting a wavelength thereof and a binding resin binding the wavelength conversion material, and a transparent resin filling spaces between the phosphor structures.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: June 13, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung Mi Moon, Won Soo Ji
  • Patent number: 9605201
    Abstract: A light emitting device can include a wavelength conversion member with a high light extraction efficiency and capable of achieving a light emitting device with high performance. The wavelength conversion member can include phosphor particles formed from a base material and an activator agent added thereto and having an irregular surface; a matrix material including a light-transmitting material, the matrix material being present between the phosphor particles; and additive particles formed from the base material and adhering to the irregular surface of the phosphor particle to form a particle structure having an irregular surface including a projected section and a recessed section. The difference between the projected section and the recessed section of the irregular surface of the particle structure is larger than the difference between a projected section and a recessed section of the irregular surface of the phosphor particle without the additive particles adhering thereto.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: March 28, 2017
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yuta Yamaguchi
  • Patent number: 9606399
    Abstract: The exemplary embodiments of the present invention have a first refractive surface whose distance from a central axis gradually increasing as being distanced from a rear surface, and light from a light source can be effectively emitted from a first refractive surface to a lateral direction or an upper lateral direction.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 28, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Chang Hyuck Lee, Eun Sung Seo, Ki Cheol Kim, Hyun Ho Choi, Gi Seok Lee
  • Patent number: 9581300
    Abstract: An illumination module includes a color conversion cavity with a first interior surface having a first wavelength converting material and a second interior surface having a second wavelength converting material. A first LED is configured to receive a first current and to emit light that preferentially illuminates the first interior surface. A second LED is configured to receive a second current and emit light that preferentially illuminates the second interior surface. The first current and the second current are selectable to achieve a range of correlated color temperature (CCT) of light output by the LED based illumination device.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 28, 2017
    Assignee: Xicato, Inc.
    Inventors: Gerard Harbers, Serge J. A. Bierhuizen, Hong Luo
  • Patent number: 9557467
    Abstract: Provided is a display device, which includes a light source, a light guide plate, a light conversion member, and a display panel. Light is incident to the light guide plate from the light source. The light conversion member is between the light source and the light guide plate. The display panel is on the light guide plate. The light guide plate includes a central region corresponding to an available display region of the display panel for displaying an image, an outer region around the central region, and a total reflection surface inclined from an optical axis of the light source, and disposed in the outer region.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: January 31, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventors: In Jae Yeo, Eun Sung Seo
  • Patent number: 9547119
    Abstract: The invention relates to a color temperature variable light emitter and a method, adapted for generating color temperature variable light.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: January 17, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventor: Rifat Ata Mustafa Hikmet
  • Patent number: 9541256
    Abstract: A light conversion film including a first barrier film, a light conversion layer disposed on the first barrier film, the light conversion layer including a matrix resin and red quantum dots that are dispersed into the matrix resin, and a second barrier film disposed on the light conversion layer. The light conversion film satisfies following Equation (1): 5?(weight of quantum dot within light conversion layer/total weight of light conversion layer)×100×t?50, where, t is a thickness of the light conversion layer.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: January 10, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jinwoo Sung, Jinmok Oh, Byoungkwon Cho, Moongoo Choi
  • Patent number: 9535206
    Abstract: Display backlight structures may provide backlight illumination that passes through display layers in the display. Light-emitting diodes may emit blue light into an edge of a light guide plate. Optical films may overlap the light guide plate. The optical films may include a quantum dot enhancement film. A peripheral strip of yellow reflector or other light control structures may be incorporated into the backlight structures to reduce blue edge effects. The light control structures may have features with a spatially varying density, may be formed from quantum dot enhancement film, or may be formed form other structures. The light control structures may be formed on the surfaces of the optical films, on a reflective layer under the light guide plate, or on a surface of a mold frame or other structure that lies in a plane parallel to the plane of the light guide plate.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: January 3, 2017
    Assignee: Apple Inc.
    Inventors: Chenhua You, Jun Qi, Sheng Min Wang, Victor H. Yin
  • Patent number: 9496466
    Abstract: Light emitter devices with improved light extraction and related methods are disclosed. In one embodiment, the light emitter device can include a submount, at least one light emitting chip disposed over the submount, and a lens disposed over the light emitting chip. The lens can include a lens base that can have substantially the same geometry as a geometry of the submount.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: November 15, 2016
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Justin Lydon, Raymond Rosado, Jeffrey C. Britt
  • Patent number: 9491400
    Abstract: A display apparatus with an image pickup apparatus has a display unit for displaying an image by a plurality of light-transparent display pixels and an image pickup unit arranged at a rear surface of the display unit to pick up object light from an object at a front surface of the display unit. The display unit has a plurality of light-transparent phase adjustment units which are arranged in correspondence to the display pixels and adjust an optical-path length of object light. The plurality of phase adjustment units have different thicknesses in the optical axis direction of the object light which transmits, and the phase adjustment units having the same thickness are arranged at a predetermined period.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: November 8, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Nagano
  • Patent number: 9490402
    Abstract: A white light emitting LED device comprises: base, blue light LED chips, light reflector and transparent substrate covered with a phosphor coating; two ends of the light reflector connect the base and the transparent substrate, respectively, the inner surface of the light reflector is covered with a light-reflecting coating; blue light LED chips are set on the surface of the base pointing to the transparent substrate, and the electrode leads of blue light LED chips pass through the base; blue light LED chip is a single chip, or a group of chips connected in series, or in parallel, or in a mixed manner; the transparent substrate has the shape of a plane, or a convex, or a semi-cylinder. The present invention gets the white light by utilizing the blue lights emitted by the blue light LED chips to irradiate the transparent substrate which is covered with a phosphor coating.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: November 8, 2016
    Inventor: Zhiqiang Qian
  • Patent number: 9454936
    Abstract: A display apparatus is provided. The display apparatus includes a first light source unit comprising a first light source that emits light having a first spectral band and a photo-converter that converts the light having the first spectral band to a first color light. A spectral band of the first color light is different from the first spectral band of the light emitted from the first light source. The display apparatus also includes a second light source unit comprising a second light source that emits light having a second spectral band. The light having the second spectral band corresponds to a second color light, and has a same color as the light having the first spectral band. A spectral band of the second color light is different from the spectral band of the first color light.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: September 27, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Hyuk Kang, Jae Byung Park, Junghyun Kwon, Sungtae Shin, Dong-Hoon Lee, Hyundeok Im, Hyun Min Cho
  • Patent number: 9424783
    Abstract: Provided is a display device. The display device includes a display panel and first to third light source units. The display panel includes a plurality of pixels. The first to third light source units are disposed on a rear of the display panel. The first light source unit emits yellow light. The second light source unit emits a first blue light in a first wavelength band. The third light source unit emits a second blue light in a second wavelength band. The second wavelength band includes light of a longer wavelength than light of the first wavelength band. The first wavelength band ranges from about 430 nm to about 455 nm. The second wavelength band may ranges from about 460 nm to about 505 nm.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: August 23, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byeong-Hee Won, WonSang Park, Mingyeong Jo
  • Patent number: 9408274
    Abstract: A system including a first set of light emitting diodes, a second set of light emitting diodes, and a control module. The first set of light emitting diodes is configured to emit blue light having first wavelengths in a first wavelength range in a spectrum of blue light. The first set of light emitting diodes includes a green phosphor configured to convert the blue light having the first wavelengths to green light. The second set of light emitting diodes is configured to emit blue light having second wavelengths in a second wavelength range in the spectrum of blue light. The second set of light emitting diodes includes a red phosphor configured to convert the blue light having the second wavelengths to red light. The first wavelength range is less than the second wavelength range. The control module is configured to control currents through the first set of light emitting diodes and the second set of light emitting diodes.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: August 2, 2016
    Assignee: Marvell World Trade LTD.
    Inventors: Sehat Sutardja, Ravishanker Krishnamoorthy
  • Patent number: 9368557
    Abstract: There is provided a display device including a light-emitting element corresponding to a pixel for a color, and a white color filter corresponding to a white pixel. Transmittance of the white color filter is based on neutral density (ND) transmittance that is uniform throughout an entire wavelength band of visible light, and transmittance in a particular wavelength band in the entire wavelength band of the visible light is decreased to be lower than the ND transmittance.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: June 14, 2016
    Assignee: Sony Corporation
    Inventors: Mamoru Suzuki, Seonghee Noh, Masato Nakamura, Seiichiro Jinta, Gaku Izumi, Shinichi Teraguchi
  • Patent number: 9347646
    Abstract: A light emitting device for controlled color rendition includes a support unit; a luminous element mounted on the support unit; and a wavelength conversion unit formed on the support unit. The wavelength conversion unit covers the luminous element as an encapsulant containing first light wavelength converters emitting light of a first wavelength and second light wavelength converters emitting light of a second wavelength, where the first wavelength is larger than the second wavelength. The wavelength conversion unit includes a first mixture region adjacent to the luminous element and a second mixture region above the first mixture region. The first light wavelength converters are concentratively distributed in the first mixture region, and the second light wavelength converters are concentratively distributed in the second mixture region.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: May 24, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yong Tae Kim