Light Conversion Patents (Class 313/501)
  • Patent number: 8040036
    Abstract: Disclosed is an organic light emitting device and a method of manufacturing the same. The organic light emitting device includes a base rod, and a plurality of organic light emitting units. Each of the plurality of organic light emitting units includes a first electrode formed on the base rod, an organic layer formed on the first electrode, and a second electrode formed on the organic layer. The plurality of organic light emitting units are formed in longitudinal direction of the base rod and come into continuous contact with each other. The first electrode of each of the organic light emitting units comes into contact with the second electrode of each of the organic light emitting units adjoining said first electrode of each of the organic light emitting units.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: October 18, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Hyeon Choi, Se-Hwan Son
  • Patent number: 8040058
    Abstract: The preparation of microlenses on a substrate and light emitting devices employing microlenses on the surface from which light is emitted is described. The miscrolenses are formed on a surface that has been coated to have functionality that promotes a sufficiently large contact angle of the microlense on the surface and contains functionality for bonding the microlense to the coating. The microlenses are formed on the coating by deposition of a microlense precursor resin as a microdrop by inkjet printing and copolymerizing the resin with the bonding functionality in the coating. The coating can be formed from a mixture of silane coupling agents that contain functionality in some of the coupling agents that is copolymeriable with the resin such that the microlens can be formed and bonded to the surface by photopolymerization.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: October 18, 2011
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Elliot P. Douglas, Jiangeng Xue
  • Patent number: 8040042
    Abstract: Disclosed is an organic EL device comprising a transparent electroconductive anode layer which is formed by a simple coating method that enables film formation at a low temperature, which organic EL device is free from electrical short circuit between the transparent electroconductive anode layer and a cathode layer. Also disclosed is a transparent electroconductive layered structure used for manufacturing such an organic EL device. The transparent electroconductive layered structure is characterized by comprising a flat and smooth substrate, a transparent electroconductive anode layer which is formed on the substrate by a coating method and mainly composed of conductive particles, and a transparent substrate joined to the transparent electroconductive anode layer via an adhesive layer. The transparent electroconductive layered structure is also characterized in that the flat and smooth substrate can be separated from the transparent electroconductive anode layer.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: October 18, 2011
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventor: Masaya Yukinobu
  • Patent number: 8040046
    Abstract: An organic electroluminescent display includes a pair of substrates; an organic electroluminescent device between the pair of substrates, including: a pair of electrodes of an anode and a cathode, and a light-emitting layer between the pair of electrodes; and a light scattering film on a substrate on the viewing side of the pair of substrates, including: a transparent substrate film, and a light scattering layer which contains a light transmitting resin and a light scattering particle having a particle size of from 0.3 ?m to 1.2 ?m, wherein a ratio of (np/nb) is from 0.80 to 0.95 or from 1.05 to 1.35, taking a refractive index of the light scattering particle and the light transmitting resin as np and nb, respectively.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: October 18, 2011
    Assignee: Fujifilm Corporation
    Inventors: Katsumi Inoue, Ryuji Saneto
  • Patent number: 8040040
    Abstract: A light source, includes a component (6) for emitting light, arranged to emit a major part of light generated within the component through a face (8) of the component (6), and at least one structure (7;18) for coupling out light, having a base (11;19) in contact with the face (8) of the component (6) and arranged to emit light through an aperture (12;20) opposite the base (11;19). An interface between the component (6) and an environment surrounding the base (7;18) is arranged to keep at least part of the light generated in the component confined to at least a layer of the component (6) adjoining the base (11;19). The base (11; 19) is in contact with the face (8) over an area (A2) smaller than the area (A0) of the face (8).
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: October 18, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Marcellinu Petrus Carolus Michael Krijn, Michel Cornelis Josephus Marie Vissenberg, Peter Alexander Duine
  • Patent number: 8040057
    Abstract: A display panel includes a substrate and an electrode disposed on the substrate. A contact angle ? between the substrate and the electrode is expressed by the following Equation 1: arc tangent(T/S)???arc tangent(40T/S) (S: surface area of electrode cross section, T: peak height of electrode cross section).
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: October 18, 2011
    Assignee: LG Electronics Inc.
    Inventor: Dohwan Kim
  • Patent number: 8040055
    Abstract: An organic light emitting diode (OLED) display device for displaying a white color using a first color and a second color that are complementary to each other. The OLED display device includes a substrate, a lower electrode on the substrate in a first direction, a first organic layer on a first region of the lower electrode and having a first EML for displaying a first color, a second organic layer on a second region of the lower electrode and having a second EML for displaying a second color that is complementary to the first color, and an upper electrode disposed on the first and second organic layers in a second direction crossing the first direction, wherein the first organic layer has a different thickness from the second organic layer. In addition, a thin film transistor (TFT) may disposed between the substrate and the lower electrode.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: October 18, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Mo Koo, Oh-Keun Song, Hye-In Jeong, Hyuk-Sang Jun, Tae-Shick Kim, Seon-Hee Kim
  • Patent number: 8040045
    Abstract: An organic electroluminescent light source has at least one substrate and layers that are arranged on the substrate. The layers include electrodes of which at least one electrode is transparent and one acts as an anode and one as a cathode, and at least one organic electroluminescent layer that is arranged between the electrodes. The organic electroluminescent layer has regions that emit blue light and/or green light, and at least one phosphor layer that is arranged in the beam path of the light leaving the organic electroluminescent light source and that partly covers the electroluminescent layer.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: October 18, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Hans-Helmut Bechtel, Wolfgang Busselt, Peter Schmidt, Joerg Meyer, Herbert Friedrich Boerner, Stefan Peter Grabowski
  • Patent number: 8040056
    Abstract: An embodiment of the present invention is an organic EL display panel including a plurality of first electrodes, a confining wall which covers an edge part of the first electrode and sections the plurality of first electrodes into different pixels, a luminescent medium layer which has a plurality of layers including a luminescent layer and a second electrode formed on the luminescent medium layer, and an organic EL display panel also includes at least two layers which are included in the luminescent medium layer and which are formed into a stripe shape and are perpendicular to each other.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: October 18, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yuko Abe, Eiichi Kitazume, Koji Takeshita
  • Patent number: 8033692
    Abstract: A first lighting device comprises at least one plural cavity element and a plurality of solid state light emitters. A second lighting device comprises at least one plural cavity element, a plurality of solid state light emitters and at least one encapsulant region, at least a portion of the plural cavity element being surrounded by the encapsulant region. Each plural cavity element has at least two optical cavities. Each optical cavity comprises a concave region in the plural cavity element. At least one solid state light emitter is present in each of at least two of the optical cavities.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: October 11, 2011
    Assignee: Cree, Inc.
    Inventors: Gerald H. Negley, Antony Paul Van De Ven
  • Publication number: 20110241538
    Abstract: An image display device including a light emission section which emits light to an intensity adjusting section and a wavelength conversion section which change the intensity and wavelength of the emitted light. Phosphors and phosphor like materials are employed in wavelength conversion and a liquid crystal is employed for the light adjustment. The light emission device may include plural semiconductor light emitting elements having a different wavelength ranges such as diodes stacked in a compact and predetermined order such that wavelengths of light from each diode are emitted from the light emitting elements.
    Type: Application
    Filed: June 13, 2011
    Publication date: October 6, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Satoshi KOMOTO, Masayuki Ishikawa, Tadashi Umeji, Kuniaki Konno, Koichi Nitta, Haruhiko Okazaki
  • Patent number: 8030843
    Abstract: A phosphor for use, for example, with an ultraviolet LED to provide a broad-spectrum white light approximating diffuse sunlight, that includes quantum dots spaced from an activator material by a capping layer surrounding the quantum dots. This approach of spacing an activator material from the quantum dots provides improved spectral output for quantum dots of materials such as zinc sulfide.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: October 4, 2011
    Assignee: Wisys Technology Foundation
    Inventor: Charles Phillip Gibson
  • Patent number: 8026659
    Abstract: This invention discloses a wavelength converting material. The wavelength converting material comprises a metal haloaluminate compound phosphor with a chemical formula Mw-pAlyOzXq:Rp, wherein M is at least one element selected from the group of Be, Mg, Ca, Sr, Ba and Zn; X is at least one element selected from the group of F, Cl, Br, and I; R is one or more elements selected from the group of the transition metals and at least one element selected from the lanthanide series. Because the emitting wavelength of the metal haloaluminate compound phosphor is 550˜650 nm which is from the green to the red light spectrum, the white light mixed by the converted light of the metal haloaluminate phosphor and the blue light has better color rendering index. Besides, this invention also discloses the optoelectronic devices comprising the metal haloaluminate compound phosphor.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: September 27, 2011
    Assignee: Epistar Corporation
    Inventors: Yu-Sheng Tang, Ru-Shi Liu, Shu-Fen Hu, Chien-Yuan Wang
  • Patent number: 8022625
    Abstract: There is provided an electro-luminescence device in which a display base substrate including a display body layer having a switching element disposed in the shape of a matrix and a light emitting element having a light emitting state controlled by the switching element and a sealing layer having a gas barrier layer that is formed on the display body layer and has at least a function for blocking water vapor and a protection substrate made of a translucent material and having a surface on which at least two types of gap control layers made of different materials are stacked are bonded such that a gap control layer, disposed on the uppermost layer, of the gap control layers and the gas barrier layer are brought into contact with each other, wherein the gap control layer disposed on the uppermost layer has a Young's modulus lower than the gas barrier layer.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: September 20, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Kenji Hayashi
  • Patent number: 8021008
    Abstract: A lighting apparatus includes a source of light of a first spectral characteristic, a reflector or a diffusely reflective chamber or cavity having a transmissive optical passage, and a liquid containing quantum dots. The quantum dots provide a wavelength shift of at least some light emitted by the source of light to produce a desired second spectral characteristic in the light output.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: September 20, 2011
    Assignee: ABL IP Holding LLC
    Inventor: David P. Ramer
  • Publication number: 20110222277
    Abstract: Solid state lighting devices include least one solid state emitter and multiple lumiphors, arranged to output aggregated emissions comprising at least one short wavelength blue peak, at least one long wavelength blue (LWB) peak, at least one yellow and/or green peak, and at least one red and/or orange peak. Presence of long wavelength blue enhances color rendering. At least one solid state emitter may include a short wavelength blue LED, LWB LED, and/or UV LED. Multiple emitters may be provided. Resulting devices may provide CRI greater than 85, efficiency of greater than 50 lm/watt, and color stability in a range of ?u?v??0.008 over a temperature change of 75° C.
    Type: Application
    Filed: February 18, 2011
    Publication date: September 15, 2011
    Applicant: CREE, INC.
    Inventors: Gerald H. Negley, Antony Paul van de Ven, Bernd P. Keller, Ronan P. LeToquin, Peter Scott Andrews
  • Publication number: 20110221330
    Abstract: Solid state lighting devcies include least one solid state emitter and multiple lumiphors, arranged to output aggregated emissions comprising at least one short wavelength blue peak, at least one long wavelength blue (LWB) peak, at least one yellow and/or green peak, and at least one red and/or orange peak. Presence of long wavelength blue enhances color rendering. At least one solid state emitter may include a short wavelength blue LED, LWB LED, and/or UV LED. Multiple emitters may be provided. Resulting devices may provide CRI greater than 85, efficiency of greater than 50 lm/watt, and color stability in a range of ?u?v??0.008 over a temperature change of 75° C.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 15, 2011
    Applicant: CREE, INC.
    Inventors: Gerald H. Negley, Antony Paul Van De Ven, Bernd P. Keller, Ronan P. LeToquin, Peter Scott Andrews
  • Patent number: 8013514
    Abstract: The invention is directed to an organic electroluminescent (EL) display device having an improved light extracting efficiency due to a photonic crystal layer formed proximate one side of a stack. Among other elements, the stack may include a first electrode formed on a substrate, an organic light emitting layer formed above the first electrode, and a second electrode formed above the organic light emitting layer. Additionally, the photonic crystal layer may be configured to correspond to a wavelength of colored light. An organic EL display device having an improved light extracting efficiency may be manufactured using a thermal transfer donor film to adhere the photonic crystal layer to the stack.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: September 6, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jin-Woo Park, Ho-Kyoon Chung, Jang-Hyuk Kwon, Mu-Hyun Kim, Seung-Yong Song, Young-Rag Do, Yoon-Chang Kim, Tae-Min Kang, Seong-Taek Lee
  • Patent number: 8013515
    Abstract: A light-emitting module (1) includes a substrate (10), a plurality of light-emitting elements (14) formed on the substrate (10), and phosphor layers (15) covering each of the light-emitting elements (14). Each of the phosphor layers (15) includes a first phosphor region (15a) and a second phosphor region (15b) that are divided in the direction substantially parallel to the surface of the substrate (10). Each of the first phosphor region (15a) and the second phosphor region (15b) includes a phosphor that absorbs light emitted from the light-emitting element (14) and emits fluorescence. The maximum peak wavelength of fluorescence emitted from the first phosphor region (15a) is longer than that of fluorescence emitted from the second phosphor region (15b).
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: September 6, 2011
    Assignee: Panasonic Corporation
    Inventors: Noriyasu Tanimoto, Hideo Nagai, Yoshirou Tooya
  • Patent number: 8004175
    Abstract: A light-emitting material is provided allowing a light-emitting body having an excellent low-excitation characteristic and high brightness to be obtained by using a light-emitting material containing a light-emitting base material that emits light through radiative transition of electrons in material atoms, the light-emitting base having nanoparticles added thereto and dispersed therein, the light-emitting material also allowing a reduction in excitation energy and an increase in brightness to be simultaneously achieve, thereby allowing, for a wide range of light-emitting bodies, a reduction in excitation energy and a significant improvement in brightness to be achieved in a simple structure. Also provided is a light-emitting body having the light-emitting material and a light-emitting method.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 23, 2011
    Assignees: Mitsubishi Heavy Industries, Ltd., Japan Nuclear Cycle Development Institute
    Inventors: Mikio Toda, Toshiro Nishi, Nobuki Oka, Hiroyuki Tsutaya, Kuniaki Ara, Hiroaki Ohira, Kazuya Kurome, Naoki Yoshioka
  • Patent number: 7990045
    Abstract: The invention relates to phosphor-conversion (PC) sources of white light, which are composed of at least two groups of emitters, such as blue electroluminescent light-emitting diodes (LEDs) and wide-band (WB) or narrow-band (NB) phosphors that partially absorb and convert the flux generated by the LEDs to other wavelengths, and to improving the quality of the white light emitted by such light sources. In particular, embodiments of the present invention describe new 3-4 component combinations of peak wavelengths and bandwidths for white PC LEDs with partial conversion. These combinations are used to provide spectral power distributions that enable lighting with a considerable portion of a high number of spectrophotometrically calibrated colors rendered almost indistinguishably from a blackbody radiator or daylight illuminant, and which differ from distributions optimized using standard color-rendering assessment procedures based on a small number of test samples.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: August 2, 2011
    Assignee: Sensor Electronic Technology, Inc.
    Inventors: Arturas Zukauskas, Rimantas Vaicekauskas, Feliksas Ivanauskas, Henrikas Vaitkevicius, Michael Shur
  • Patent number: 7986088
    Abstract: A fluorescence conversion medium comprising, a fluorescent fine particle formed of an inorganic nanocrystal which absorbs visible and/or near ultraviolet light and emits visible fluorescence, and a transparent medium which disperses the fluorescent fine particle therein, an absorbance at a wavelength where the fluorescent intensity is maximized being in the range of 0.1 to 1.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: July 26, 2011
    Assignees: Idemitsu Kosan Co., Ltd., Sony Corporation
    Inventors: Takashi Sekiya, Jiro Yamada
  • Patent number: 7986087
    Abstract: Disclosed is a color conversion member which is improved in the prevention of a deterioration in color conversion function, the prevention of reflection of external light, and color rendering properties. The color conversion member comprises a transparent substrate, two or more types of color conversion layers, and a color filter layer. The color conversion layers function to convert incident lights for respective pixels to outgoing lights of colors different from the incident lights. The two or more types of color conversion layers are arranged on said transparent substrate. The color filter layer is provided on the transparent substrate side of any one of the color conversion layers or between the above any one of the color conversion layers and the color conversion layers adjacent to the above any one the color conversion layers.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: July 26, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masaaki Asano, Koji Arai
  • Publication number: 20110175520
    Abstract: Solid state light emitting devices and/or solid state lighting devices use three or more phosphors excited by energy from a solid state source. The phosphors are selected and included in proportions such that the visible light output of such a device exhibits a radiation spectrum that approximates a black body radiation spectrum for the rated color temperature for the device, over at least a predetermined portion of the visible light spectrum.
    Type: Application
    Filed: May 10, 2010
    Publication date: July 21, 2011
    Inventors: David P. RAMER, Jack C. RAINS, JR.
  • Patent number: 7982384
    Abstract: An image display device including a light emission section which emits light to an intensity adjusting section and a wavelength conversion section which change the intensity and wavelength of the emitted light. Phosphors and phosphor like materials are employed in wavelength conversion and a liquid crystal is employed for the light adjustment. The light emission device may include plural semiconductor light emitting elements having a different wavelength ranges such as diodes stacked in a compact and predetermined order such that wavelengths of light from each diode are emitted from the light emitting elements.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: July 19, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Komoto, Masayuki Ishikawa, Tadashi Umeji, Kuniaki Konno, Koichi Nitta, Haruhiko Okazaki
  • Patent number: 7982387
    Abstract: An optoelectronic component comprises a first electrode (3), a radiation-emitting layer sequence (1) having an active region (10) on the first electrode (3), which region has a main extension plane (E) with a surface normal (N) and emits an electromagnetic primary radiation having a non-Lambertian emission characteristic, a second electrode (4) on the radiation-emitting layer sequence (1), said second electrode being transparent to the primary radiation, and a wavelength conversion layer (2) in the beam path of the primary radiation, which converts the primary radiation at least partly into an electromagnetic secondary radiation.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: July 19, 2011
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Benjamin Claus Krummacher, Florian Schindler, Norwin von Malm, Manfred Url
  • Patent number: 7977868
    Abstract: A full-color active matrix organic light emitting display including a transparent substrate, a color filter positioned on an upper surface of the substrate, a spacer layer formed on the upper surface of the color filter, a metal oxide thin film transistor backpanel formed on the spacer layer and defining an array of pixels, and an array of single color, organic light emitting devices formed on the backpanel and positioned to emit light downwardly through the backpanel, the spacer layer, the color filter, and the substrate in a full-color display.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: July 12, 2011
    Assignee: Cbrite Inc.
    Inventors: Chan-Long Shieh, Gang Yu
  • Patent number: 7973466
    Abstract: An organic electroluminescent display device includes: a substrate having a pixel region and a non-pixel region surrounding the pixel region; a first electrode on the substrate in the pixel region; an organic luminescent layer on the first electrode; a second electrode on the organic luminescent layer; and a light-shielding means corresponding to the non-pixel region.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 5, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Du-Hwan Oh, Hoon-Ju Chung, Byeong-Koo Kim, Yong-Min Ha
  • Patent number: 7967653
    Abstract: A full color display comprising a red, a green, and a blue light emitting diode, each light emitting diode including a light emitting region having at least one layer of single crystal rare earth material, the rare earth material in each of the light emitting diodes having at least one radiative transition, and the rare earth material producing a radiation wavelength of approximately 640 nm in the red light emitting diode, 540 nm in the green light emitting diode, and 460 nm in the blue light emitting diode. Generally, the color of each LED is determined by selecting a rare earth with a radiative transition producing a radiation wavelength at the selected color. In cases where the rare earth has more than one radiative transition, tuned mirrors can be used to select the desired color.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: June 28, 2011
    Inventors: Michael Lebby, Vijit Sabnis, Petar B. Atanackovic
  • Patent number: 7969085
    Abstract: A color-change material layer comprising: a color-change material that converts light of a second frequency range higher than a first frequency range to light of the first frequency range; and a transparent material having a refractive index of at least 1.6 intermixed with the color-change material, wherein the layer is substantially non-scattering to light of the first frequency range.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: June 28, 2011
    Assignee: Global OLED Technology LLC
    Inventor: Ronald S. Cok
  • Patent number: 7963677
    Abstract: A light source device includes a light source unit emitting light of a first wavelength and a wavelength converting element converting light of the first wavelength into light of a second wavelength. An external resonator transmits light of the second wavelength toward an emission destination and reflects light of the first wavelength to resonate between the light source unit and the external resonator. A wavelength separating section transmits light converted from the first wavelength to the second wavelength while traveling from the external resonator to the light source unit and reflects light of the first wavelength in order to separate the different wavelength light. A turnback section reflects light of the second wavelength separated by the wavelength separating section toward the emission destination. In addition, the wavelength separating section reflects light of the first wavelength from the light source unit to travel toward the wavelength converting element.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: June 21, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Shunji Kamijima
  • Patent number: 7965036
    Abstract: The present invention relates to a method of manufacturing an LED device which emits light of multi-wavelengths. The invention also relates to a method of manufacturing LED devices which emit light of high quality from throughout the whole surface in a uniform manner. In particular, utilizing the manufacturing method of LED devices which emit light of multi-wavelengths makes it possible to produce LED devices of high quality in a simple and cost-efficient way, not by using adhesives, but by a sputtering or PLD method. In addition, since the characteristics of the desired emitted light can be controlled by controlling the amount and type of the phosphors during the manufacture of sputtering targets, high quality LED devices can be manufactured easily.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: June 21, 2011
    Assignee: Samsung Co., Ltd.
    Inventors: Hyo Chul Yun, Geum Jae Jo, Young Chun Kim, Dong Hyun Cho
  • Patent number: 7965030
    Abstract: An organic light emitting diode (OLED) comprising a substrate, a 1st electrode disposed on the substrate and including at least one lead, a 2nd electrode including at least one lead, an organic light-emitting layer disposed between the 1st electrode and the 2nd electrode, and a conductive layer. At least one of (1) the substrate and the 1st electrode and (2) the 2nd electrode are transparent. The conductive layer is disposed on one of the 1st electrode and the 2nd electrode, and effectively surrounds the light-emitting layer and the other of the 1st electrode and the 2nd electrode.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: June 21, 2011
    Assignee: Merck Patent GmbH
    Inventors: Thomas A. Frank, Peter Fangyun Hsu, Edgar Boehm, Anton Volker Heinrich
  • Patent number: 7965034
    Abstract: An organic electro-luminescence display device includes at least one light emission device, the organic light emission device having a first electrode; at least one thin film transistor for driving the light emission device, a pixel electrode being connected to the at least one thin film transistor; a conductive layer formed of a conductive polymer material to electrically connect the light emission device and the pixel electrode.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: June 21, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Gee Sung Chae, Jin Wuk Kim
  • Patent number: 7960912
    Abstract: A light-emitting device includes a cathode, an anode, a first light-emitting layer that is disposed between the cathode and the anode and that emits light of a first color, a second light-emitting layer that is disposed between the first light-emitting layer and the cathode and that emits light of a second color different from the first color, and an intermediate layer that is disposed between and in contact with the first light-emitting layer and the second light-emitting layer and that functions to prevent energy transfer of excitons between the first light-emitting layer and the second light-emitting layer. The intermediate layer includes a first intermediate layer disposed in contact with the first light-emitting layer and mainly containing a first intermediate material and a second intermediate layer disposed in contact with the second light-emitting layer and mainly containing a second intermediate material different from the first intermediate material.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: June 14, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Koji Yasukawa, Masayuki Mitsuya, Hidetoshi Yamamoto
  • Patent number: 7956537
    Abstract: A display device includes: a support substrate including a display region where a plurality of display elements are arranged and a peripheral region where a drive circuit for each display element is provided in the periphery of the display region; a seal resin layer formed in at least the peripheral region; an opposed substrate bonded through the seal resin layer to the support substrate, sealing the display elements; an organic insulating film formed on the support substrate so as to insulate the drive circuit; a separation groove formed through the thickness of the organic insulating film so as to surround the display region and separate the organic insulating film into an inner portion and an outer portion; and a framelike projection formed on the opposed substrate so as to be opposed to the separation groove.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: June 7, 2011
    Assignee: Sony Corporation
    Inventor: Tadakatsu Nakadaira
  • Publication number: 20110127904
    Abstract: An embodiment of the present invention provide a lighting module, which comprises a carrier, at least one light source disposed on and electrically connected with the carrier, a molding compound mixed with a fluorescent material to encapsulate the light source and a portion of the carrier, and a color temperature converter disposed over or doped into the molding compound.
    Type: Application
    Filed: November 2, 2010
    Publication date: June 2, 2011
    Inventor: Wen-Kuei TSAI
  • Patent number: 7952276
    Abstract: In a method of manufacturing an organic light emitting display, an organic light emitting layer and a second electrode are sequentially formed on a first sub-electrode, and a laser beam is irradiated onto the organic light emitting layer to partially remove the organic light emitting layer, so that the first sub-electrode is electrically connected to the second electrode. Thus, even though the second electrode is formed to have a small thickness in order to maximize an amount of light that is generated by the organic light emitting layer and exits to an exterior through the second electrode, the second electrode is electrically connected to the first sub-electrode, thereby reducing an electrical resistance of the second electrode.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Soo Lee, Chang-Woong Chu, Jin-Koo Chung
  • Patent number: 7950567
    Abstract: An organic light emitting diode (OLED) display device and a method of fabricating the same are disclosed. In one embodiment, the method includes: i) preparing a support and a flexible layer, ii) forming a first metal layers on one side of a support and a second metal layer on one side of a flexible layer, iii) performing a cleaning process to the first metal layer and the second metal layer, iv) forming a first radical layer on the first metal layer and a second radical layer on the second metal layer and v) joining the first and second radial layers to each other. At least one embodiment of the invention enhances process convenience and manufacturing yield, and reduces manufacturing costs and time for a flat panel display device having a flexible substrate.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: May 31, 2011
    Assignee: Samsung Mobile Display Co., Ltd
    Inventors: Jae-Seob Lee, Kyu-Sung Lee, Jung-Ha Lee
  • Patent number: 7952108
    Abstract: Reducing effects of thermal expansion in electronic components. An electronic device can include a support, such as a leadframe. An electronic component can be supported by the support. A first flexible layer can cover the electronic component. A second more rigid layer can cover the first layer. The first layer can be made from a material that is more flexible than the second layer thereby creating a mechanical buffer layer between the second layer and the electronic component such that the electronic component is protected from thermal expansion of the second portion caused by changes in temperature. The electronic component can be a laser. The first and second materials can be selected to disperse an optical emission from the optical transmitter.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: May 31, 2011
    Assignee: Finisar Corporation
    Inventors: Jose Joaquin Aizpuru, Christopher William Johnson, Bobby Marion Hawkins
  • Patent number: 7947973
    Abstract: An organic light-emitting device, including a substrate, an organic light-emitting element on the substrate, a sealing member on the organic light-emitting element, a ¼ wavelength layer on one surface of the substrate, the organic light-emitting element, or the sealing member, and a linear polarization layer on one surface of the substrate, the organic light-emitting element, the sealing member, or the ¼ wavelength layer, the linear polarization layer being closer to an image display surface than the ¼ wavelength layer.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: May 24, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Woo Song, Jong-Hyuk Lee, Won-Jong Kim, Yoon-Hyeung Cho, Joon-Gu Lee, Jae-Heung Ha
  • Patent number: 7934855
    Abstract: A flat light-emitting apparatus includes a light-emitting element for radiating visible light consisting of a first-wavelength light with a wavelength substantially not less than 600 nm and a second-wavelength light with a wavelength substantially not greater than 480 nm, a wavelength conversion material for generating a third-wavelength light when irradiated by the second-wavelength light, a first color filter for the passing of the first-wavelength light, a second color filter for the passing of the second-wavelength light, and a third color filter for the passing of the third-wavelength light.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: May 3, 2011
    Assignee: Epistar Corporation
    Inventors: Min-Hsun Hsieh, Chien-Wuan Wang
  • Publication number: 20110089815
    Abstract: A light-emitting device includes a photonic crystal layer formed above a light-emitting chip and covered with a phosphor layer for diffusing light emitted from the light-emitting chip. The diffused light further excites the phosphor layer to emit colored light of multiple colors. The multiple colors are then mixed to generate white light.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 21, 2011
    Applicant: AUROTEK CORPORATION
    Inventors: Cheng-Kuo Yeh, Jui-Hung Sun
  • Patent number: 7928640
    Abstract: A display apparatus includes a substrate; a plurality of pixels arranged above the substrate, each including a plurality of sub-pixels emitting light of different colors; a circularly polarizing member disposed above the pixels, the transmittance of light of a selected color through the circularly polarizing member being higher than that of light of the other colors therethrough; and a light-absorbing member disposed only above the sub-pixels, emitting light of the non-selected colors. The light-absorbing member absorbs light of the selected color.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: April 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Fukuda, Ryuichiro Isobe
  • Patent number: 7928646
    Abstract: An organic electroluminescent display device and fabrication method thereof is provided. The device includes a first substrate having at least one thin film transistor; an electroluminescent unit formed on the first substrate and electrically connect to the thin film transistor; a first protective layer formed on the electroluminescent unit; a second protective layer formed on the first protective layer; and a third protective layer formed on the second protective layer and in contact with the first protective layer. The device further comprises a second substrate sealed to the first substrate to form the electroluminescent unit between the first substrate and second substrate. In the device, the first protective layer comprising inorganic material, the second protective layer comprising organic material and the third protective layer comprising inorganic material are formed on the electroluminescent unit to reduce oxidation of electrodes by preventing infiltration of moisture.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: April 19, 2011
    Assignee: Chimei Innolux Corporation
    Inventors: Nishikawa Ryuji, Hsiang-Lun Hsu
  • Patent number: 7928647
    Abstract: A composite emitting device including: a supporting substrate, a first emitting part comprising a first electrode, a luminescent medium, and a second electrode stacked in this order on the supporting substrate, and a second emitting part including a fluorescent film arranged in a direction different from the light-out coupling direction relative to the luminescent medium, the luminescent medium emitting light by applying a voltage between the first electrode and the second electrode in the first emitting part, and the fluorescent film of the second emitting part absorbing light emitted from the luminescent medium to emit light.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: April 19, 2011
    Assignees: Akiyoshi Mikami, Idemitsu Kosan Co., Ltd.
    Inventors: Akiyoshi Mikami, Hitoshi Kuma
  • Patent number: 7923918
    Abstract: The present invention provides a reliable, long-life phosphor, or the like, which is prevented from darkening due to aging. A light emitting apparatus has a light emitting element and a phosphor layer. The phosphor layer has a phosphor excited by light from the light emitting element, and a binder which binds the phosphor. The binder is hydroxide oxide gel obtained by curing sol of a hydroxide oxide mixed with sol containing at least one metallic element selected from the group consisting of Al, Y, Gd, Lu, Sc, Ga, In, and B. Transmittance of hydroxide oxide in a gel state is higher than the transmittance in the polycrystal state where the sol-gel reaction is proceeded. In addition, the content of hydroxyl group or water of crystallization in the hydroxide oxide is 10% or less by weight.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: April 12, 2011
    Assignee: Nichia Corporation
    Inventors: Hiroto Tamaki, Shinsuke Sofue, Kunihiro Izuno, Junji Takeichi
  • Patent number: 7923917
    Abstract: A color conversion layer is provided which is capable of converting light from an emitting medium effectively to light containing a ray having a longer wavelength and exhibits less deterioration so as to have a long lifetime. The color conversion layer comprising a fluorescent medium for converting light emitted from an emitting medium to light having a longer wavelength, and having a haze value of 50% to 95%. The color conversion layer can be made thin, since the layer can efficiently convert the color of light from an emitting medium. The processibility such as patterning thereof is then improved.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: April 12, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mitsuru Eida, Hitoshi Kuma
  • Publication number: 20110062857
    Abstract: An LED light source device with color temperature adjustment capability includes at least one light-emitting diode and a color temperature conversion element. A front end of the light-emitting diode has a light-emitting end. The color temperature conversion element is disposed in front of the light-emitting end of the light-emitting diode. The color temperature conversion element includes a light-transmitting substrate and color temperature conversion materials. The color temperature conversion materials are provided on/in the light-transmitting substrate. The color temperature conversion materials include high refractive index materials and low refractive index materials. The high refractive index materials that are selected from the group consisting of TiO2, Ti3O5 or Ta2O5. The low refractive index materials that are selected from the group consisting of SiO2 or MgF2. The light beam emitted by the light-emitting diode passes through the color temperature conversion element to change its color temperature.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 17, 2011
    Inventors: CHUNG-MIN CHANG, KUO-CHIANG CHEN, YU-CHENG LIN, MING-TAN YANG, CHI-WEN GUO, CHIA-HUNG HSU
  • Patent number: 7906906
    Abstract: A light emitting device is provided. The light emitting device includes a substrate including a non-emission region and an emission region, an emission unit which is located on the subsrate and includes a first electrode, a second electrode and an emission layer interposed between the first and second electrodes, a shield cap adhered to the substrate to encapsulate the emission unit, and an inert liquid or an inert gas in a space between the substrate and the shield cap.
    Type: Grant
    Filed: March 25, 2006
    Date of Patent: March 15, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Jong Geun Yoon