Halogen-containing Patents (Class 428/691)
  • Patent number: 10230052
    Abstract: A highly efficient light-emitting element capable of providing a plurality of emission colors is provided, which does not easily deteriorate and can minimize a decrease in external quantum efficiency even when a light-emitting layer has a stacked structure. A light-emitting device, an electronic device, and a lighting device which have low power consumption and long lifetime are provided. A light-emitting element includes a plurality of light-emitting layers stacked between a pair of electrodes. The light-emitting layers each contain a host material and a guest material. The guest materials of the light-emitting layers are substances which have different HOMO levels but have substantially the same LUMO levels and emit light of different colors. A light-emitting device, an electronic device, and a lighting device are fabricated using the light-emitting element.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: March 12, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki Suzuki, Satoshi Seo, Sachiko Kawakami, Tsunenori Suzuki
  • Patent number: 10111300
    Abstract: An improved transparent thin film electroluminescent display including a substrate, an active layer capable of emitting a wavelength range of visible light, a viewing side surface and a narrowband reflector reflecting part of the light of the active layer back towards the viewing side surface is disclosed. Said narrowband reflector and viewing side surface are arranged on opposite sides of the active layer. A method for manufacturing an improved transparent thin film electroluminescent display including a narrowband reflector is also disclosed.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 23, 2018
    Assignee: BENEQ OY
    Inventor: Kari Härkönen
  • Patent number: 10056550
    Abstract: The present invention relates to organic copolymers and organic semiconducting compositions comprising these materials, including layers and devices comprising such organic semiconductor compositions. The invention is also concerned with methods of preparing suchorganic semiconductor compositions and layers and uses thereof. The invention has application in the field of printed electronics and is particularly useful as a semiconducting material for use in formulations for organic thin filmtransistor (OTFT) backplanes for displays, integrated circuits, organic light emitting diodes (OLEDs), photodetectors, organic photovoltatic (OPV) cells, sensors, memory elements and logic circuits.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: August 21, 2018
    Assignee: SMARTKEM LIMITED
    Inventor: Russell Jon Griffiths
  • Patent number: 9412963
    Abstract: The disclosure relates to organic electroluminescent elements, materials for use in the elements, and devices using the elements, which include a compound represented by the following General Formula (1): where R1 to R12 each independently represents a hydrogen atom or a substituent and which may be bound to each other to form a non-aromatic ring, where Z1 to Z4 each independently represents a hydrogen atom or a substituent, and where Z1 and Z2, and Z3 and Z4 may be bound to each other to form a ring.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: August 9, 2016
    Assignee: UDC Ireland Limited
    Inventors: Koji Takaku, Yasunori Yonekuta, Katsuyuki Youfu, Wataru Sotoyama, Tianhua Ouyang, Tetsu Kitamura, Toru Watanabe
  • Patent number: 9343681
    Abstract: A highly efficient light-emitting element capable of providing a plurality of emission colors is provided, which does not easily deteriorate and can minimize a decrease in external quantum efficiency even when a light-emitting layer has a stacked structure. A light-emitting device, an electronic device, and a lighting device which have low power consumption and long lifetime are provided. A light-emitting element includes a plurality of light-emitting layers stacked between a pair of electrodes. The light-emitting layers each contain a host material and a guest material. The guest materials of the light-emitting layers are substances which have different HOMO levels but have substantially the same LUMO levels and emit light of different colors. A light-emitting device, an electronic device, and a lighting device are fabricated using the light-emitting element.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: May 17, 2016
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki Suzuki, Satoshi Seo, Sachiko Kawakami, Tsunenori Suzuki
  • Patent number: 9331286
    Abstract: The present disclosure relates to an organic electroluminescent compound employed as a hole transport material or a hole injection material and an organic electroluminescent device including the same. The organic electroluminescent compound is represented by [Chemical Formula 1] and an organic electroluminescent device employing the organic electroluminescent compound as a hole transport material exhibits very superior luminous efficiency and lifetime characteristics.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: May 3, 2016
    Assignee: SFC CO. LTD.
    Inventors: Sang-woo Park, Byung-sun Yang, Se-Jin Lee
  • Patent number: 9224967
    Abstract: A white organic light emitting device includes: first and second electrodes formed to face each other on a substrate; a first stack configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked between the first and second electrodes; a second stack configured with a second hole transportation layer, a second light emission layer, a third light emission layer, a second electron transportation layer and an electron injection layer which are stacked between the first stack and the second electrode; and a charge generation layer interposed between the first and second stacks and configured to adjust a charge balance between the two stacks.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: December 29, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Tae Sun Yoo, Hwa Kyung Kim, Hong Seok Choi, Jae Il Song, Mi Young Han, Shin Han Kim, Hye Min Oh
  • Publication number: 20140186657
    Abstract: The present invention concerns a method for the treatment of stimulable phosphors and/or screens for use in diagnosis, in particular medical radiography. The method comprises subjecting the stimulable phosphors and/or screens to an epoxide containing gaseous compound, promptly following their manufacture. By applying the method according to the invention yellowing of the stimulable phosphors and/or screens is prevented in a safe and efficient manner; thereby the disadvantages known as such resulting from such yellowing will not occur.
    Type: Application
    Filed: May 23, 2012
    Publication date: July 3, 2014
    Applicant: AGFA HEALTHCARE NV
    Inventors: Paul Leblans, Jean-Pierre Tahon
  • Patent number: 8669547
    Abstract: There is provided an organic light-emitting diode luminaire. The luminaire includes a patterned first electrode, a second electrode, and an electroluminescent layer therebetween. The electroluminescent layer includes: a host material capable of electroluminescence having an emission color that is blue; a first electroluminescent dopant having an emission color that is green; and a second electroluminescent dopant having an emission color that is in the red/orange region. The additive mixing of all the emitted colors results in an overall emission of white light.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: March 11, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Daniel David Lecloux, Norman Herron, Vsevolod Rostovtsev
  • Publication number: 20130127332
    Abstract: The teachings are generally directed to phosphors having combination coatings with multifunctional characteristics that increase the performance and/or reliability of the phosphor. The teachings include highly reliable phosphors having coatings that contain more than one inorganic component, more than one layer, more than one thicknesses, more than one combination of layers or thicknesses, a gradient-interface between components, a primer thickness or layer to inhibit or prevent leaching of phosphor components into the coatings, a sealant layer to inhibit or prevent entry of moisture or oxygen from the environment, a mixed composition layer as a sealant and multifunctional combination coatings.
    Type: Application
    Filed: November 7, 2012
    Publication date: May 23, 2013
    Applicant: Intematix Corporation
    Inventor: Intematix Corporation
  • Patent number: 8344611
    Abstract: A blue-green emitting Ce3+-activated oxyfluoride phosphor for use with a light emitting diode (LED) in solid state lighting applications. The blue-green emitting Ce3+-activated oxyfluoride phosphor is represented as: (Sr1-x-yAEy)3(Al1-zTz)O4F:Ce3+x wherein 0<x?0.3, 0?y?1, AE includes at least one element selected from alkaline earth metals on the periodic table, for example, Mg, Ca and Ba, 0?z?1, and T includes at least one atom selected from Al, B, Ga, and In. The blue-green emitting Ce3+-activated oxyfluoride phosphor may be combined with another phosphor to generate the white light. Specifically, the present invention provides for white light generation by combining the blue-green emitting Ce3+-activated oxyfluoride phosphor with either a near-ultraviolet (UV) LED and red emitting phosphor, or with a near-UV LED and a red-yellow phosphor.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: January 1, 2013
    Assignee: The Regents of the University of California
    Inventors: Won-Bin Im, Ram Seshadri, Steven P. DenBaars
  • Publication number: 20120097855
    Abstract: A scintillator panel which has achieved enhanced sharpness and sensitivity is disclosed, comprising on a first support a phosphor layer comprising phosphor columnar crystals formed by a process of vapor phase deposition and containing a parent component of cesium iodide (CsI) and an activator of thallium (Tl), and the phosphor layer comprising a first layer of a CsI layer which is in the bottom portion of the phosphor layer and does not contain any activator of thallium, and on the first layer, a second layer of a CsI—Tl layer which contains the activator of thallium and exhibits not more than 32% of a coefficient of variation of concentration of thallium in the direction of thickness.
    Type: Application
    Filed: March 4, 2010
    Publication date: April 26, 2012
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventors: Shigetami Kasai, Hiroshi Isa, Makoto Iijima, Yasushi Nagata
  • Publication number: 20120076992
    Abstract: A process for incorporating light emitting materials into aircraft interiors is described. The method includes selecting at least one light emitting material, incorporating the selected at least one light emitting material into one or more of a laminate coating and an extruded component, and installing the one or more of a laminate coating and extruded component into an aircraft cabin configuration.
    Type: Application
    Filed: December 1, 2011
    Publication date: March 29, 2012
    Inventor: John N. Harris
  • Publication number: 20110210254
    Abstract: A method is disclosed, in at least one embodiment, for producing a scintillator for a radiation detector, in which the scintillator is produced in layers by depositing a scintillator material using a PVD process. By using a PVD process, owing to lower process temperatures of less than 300° C., it is possible to produce scintillators with decay times of less than 1.1 ns over large surfaces. In this way, the prerequisites for quantitative and energy-selective detection of individual radiation quanta can be satisfied even with fluxes of more than 108 X-ray quanta/mm2*s. At least one embodiment of the invention also relates to a scintillator produced by such a method.
    Type: Application
    Filed: February 28, 2011
    Publication date: September 1, 2011
    Applicant: Siemens Aktiengesellschaft
    Inventors: Peter Hackenschmied, Stefan Wirth
  • Patent number: 7901538
    Abstract: A transparent conductive multi-layer structure having a smooth base material 1, a transparent conductive layer 2 formed on the smooth base material 1 by coating, an auxiliary electrode layer 3 formed in a pattern on the transparent conductive layer 2, and a transparent substrate 5 joined to the transparent conductive layer 2 and auxiliary electrode layer 3 through an adhesive layer 4. On a smooth peeled-off surface of the transparent conductive layer 2 from which the smooth base material 1 has been peeled off, various devices are formed to set up devices such as a dye-sensitized solar cell and an organic electroluminescent device.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: March 8, 2011
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventor: Masaya Yukinobu
  • Patent number: 7811624
    Abstract: Charge transport materials are provided, and methods for making the same.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 12, 2010
    Assignee: Dupont Displays, Inc.
    Inventor: Hailiang Wang
  • Publication number: 20100062261
    Abstract: A complex with separated scintillator and photocatalyst and a manufacturing method thereof are disclosed. The complex with separated scintillator and photocatalyst includes a transparent substrate, a scintillantor layer on one side of the substrate, and a photocatalyst layer on the other side of the substrate. The manufacturing method of the complex consists of the following steps: depositing photocatalyst on one side of a transparent substrate, depositing scintillator on the other side of the transparent substrate, and sintering the transparent substrate with coatings to form a complex with separated scintillator and photocatalyst. Thus the present invention prevents the lowering of photocatalytic performance caused by contact of scintillator with photocatalyst and can be applied to produce large-area photocatalytic reactors easily.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 11, 2010
    Inventors: Chih-Ching CHANG, Yih-Ping CHEN
  • Publication number: 20090309094
    Abstract: An organic electroluminescent device of a composite material that includes at least two emissive polymers confined into a layered inorganic host matrix, which effectively isolates the polymer chains from their neighbors, and a method for manufacturing same. The isolation of the emitting chains inhibits energy transfer and exciton diffusion between polymer chains, such that the electrically generated excitons recombine radiatively before their energy could be funneled to the emissive moiety with the lowest band gap. The emission color of such a composite is a combination of the emission of the confined polymers, and can be either white light, or can be tuned by selection of the ratio of the mixtures to output light of any desired color. The different polymers can either be mixed and then intercalated into the host matrix, or they can each be intercalated separately into the host matrix and the resulting composites mixed.
    Type: Application
    Filed: February 27, 2007
    Publication date: December 17, 2009
    Applicant: Technion Research and Development Foundation Ltd.
    Inventors: Gitti Frey, Eyal Aharon, Michael Kalina
  • Publication number: 20090130484
    Abstract: Disclosed is a silicate phosphor represented by Formula: Lia-xAxSrb-y-z-lByEuzClSic-mDmOd-nEn where A includes at least one ion selected from the group consisting of Na, K, Rb, and Cs. B includes at least one ion selected from the group consisting of Mg, Ca, Ba and Zn. C includes at least one ion selected from the group consisting of Sc, Y, La, Gd, Ce, Pr, Nd, Sm, Tb, Dy, Ho, Er, Tm, Yb, Lu and Bi. D includes at least one ion selected from the group consisting of B, Al, Ga, In and TI. E includes at least one ion selected from the group consisting of F, Cl, Br, and I. Further disclosed is a white light emitting device including the silicate phosphor.
    Type: Application
    Filed: June 13, 2008
    Publication date: May 21, 2009
    Applicant: Samsung Electro-mechanics Co., Ltd.
    Inventors: Tae-gon KIM, Seoung-jae IM, Shunichi KUBOTA, Young-sic KIM
  • Publication number: 20090092854
    Abstract: The present invention relates to organic light emitting devices (OLEDs), and more specifically to phosphorescent organic materials used in such devices. More specifically, the present invention relates to emissive phosphorescent material which comprise at least one tridentate ligand bound to a metal center, wherein at least one of the bonds to the tridentate ligand is a carbon-metal bond.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 9, 2009
    Inventors: Robert W. Walters, Jui-Yi Tsai, Peter Borden Mackenzie, Scott Beers
  • Publication number: 20090008561
    Abstract: The present invention provides an imaging scintillation radiation detector comprising a doped lanthanide halide microcolumnar scintillator formed on a substrate. The scintillation radiation detectors of the invention typically comprise a substrate. The substrate can be either opaque or optically transparent. In a particular embodiment of the present invention the microcolumnar scintillator is a lanthanide-halide (LaHalide3) doped with at least cerium. The invention also provides methods for the vapor deposition of a doped microcolumnar lanthanide-halide scintillator film.
    Type: Application
    Filed: July 3, 2007
    Publication date: January 8, 2009
    Applicant: Radiation Monitoring Devices, Inc.
    Inventors: Vivek Nagarkar, Valeriy Gaysinskiy
  • Publication number: 20080305361
    Abstract: The present invention provides a novel organometallic complex which emits green phosphorescence so as to enrich variations of phosphorescent materials for green color which is one of three primary colors. An organometallic complex comprising a structure represented by a general formula (G1) is provided. In the formula, R1 represents an alkyl group having 1 to 4 carbon atoms, and R2 and R3 individually represent hydrogen or an alkyl group having 1 to 4 carbon atoms. In addition, R4 to R7 individually represent an electron-withdrawing group, hydrogen or an alkyl group having 1 to 4 carbon atoms. Note that at least one of R4 to R7 represents an electron-withdrawing group. In addition, M is a central metal and represents either an element belonging to Group 9 in the periodic table or an element belonging to Group 10 in the periodic table.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 11, 2008
    Inventors: Hideko Inoue, Satoshi Seo, Nobuharu Ohsawa
  • Publication number: 20080268285
    Abstract: Provided is an organic electroluminescent device for emitting blue light, which has high luminous efficiency and good drive durability. This organic electroluminescent device for emitting blue light includes an anode 2, a cathode 6, and a layer which contains an organic compound interposed between the anode 2 and the cathode 6, the layer which contains an organic compound including at least a light-emitting layer 4, wherein the light-emitting layer 4 contains a bipolar host having a hole mobility and an electron mobility of 10?4 cm2/s or greater, a light-emitting dopant and a carrier trapping dopant, and the light-emitting dopant energy gap EgB, the bipolar host energy gap Egh, and the carrier trapping dopant energy gap Egd are such that Egd>Egh>EgB.
    Type: Application
    Filed: April 15, 2008
    Publication date: October 30, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Keiji Okinaka, Masataka Yashima, Akihito Saitoh, Naoki Yamada
  • Publication number: 20080268284
    Abstract: An anthracene derivative represented by a general formula (1) and an organic compound represented by a general formula (8) are provided. Further, by use of the anthracene derivative represented by the general formula (1), a light-emitting element with high emission efficiency can be obtained. Furthermore, by use of the anthracene derivative represented by the general formula (1), a light-emitting element that emits blue light with high color purity can be obtained.
    Type: Application
    Filed: March 25, 2008
    Publication date: October 30, 2008
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Sachiko KAWAKAMI, Nobuharu OHSAWA
  • Patent number: 7436115
    Abstract: The present invention discloses a method for fabricating an electroluminescent lamp that includes a step in which an electroluminescent active layer is formed by curing a UV curable electroluminescent composition. Embodiments of the method of the present invention in which each layer of a multilayer electroluminescent device are fabricated from UV curable compositions are also disclosed. A UV curable dielectric composition suitable for utilization in an electroluminescent lamp is also provided.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: October 14, 2008
    Inventors: Roy C. Krohn, Scott E. Howe, Christopher C. Ryan
  • Publication number: 20080241592
    Abstract: An organic electroluminescent device includes a light-emitting layer containing at least one host material and at least one luminescent dopant serving as a guest. The host material is a polymer having repeating units linked to each other by non-conjugated bonds and the luminescent dopant is a ?-conjugated oligomer.
    Type: Application
    Filed: March 19, 2008
    Publication date: October 2, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tetsuji FUJITA
  • Publication number: 20080233432
    Abstract: Objects of the present invention are to provide a composition in which an organometallic complex is dissolved and a method for fabricating a light-emitting element using the composition, and to provide a light-emitting element, a light-emitting device, and an electronic device each fabricated using the composition in which the organometallic complex is dissolved. The present invention provides a composition that includes a solvent and an organometallic complex including a ligand having a pyrazine skeleton, bonded to a Group 9 or Group 10 element. A method for fabricating light-emitting elements, which is suitable for industrial application, can be realized by the application of the composition of the present invention to fabrication of a light-emitting element. Furthermore, a light-emitting element with high emission efficiency, a light-emitting device and electronic device with low power consumption can be realized by use of the composition.
    Type: Application
    Filed: March 17, 2008
    Publication date: September 25, 2008
    Inventors: Hideko Inoue, Satoshi Seo, Satoko Shitagaki
  • Publication number: 20080220289
    Abstract: There is provided an organic light emitting device including: an anode, a cathode, and layer containing an organic compound, the layer being interposed between the anode and the cathode, in which the layer containing an organic compound contains at least one kind of the oligofluorene compound represented by the following general formula (I): wherein: R1 and R2 each represent an alkyl group, and may be identical to or different from each other, and R1's and R2's by which different fluorene rings are substituted may be identical to or different from each other, provided that at least four substituents of all substituents each represented by R1 or R2 are each an alkyl group having 4 or more carbon atoms, and at least four substituents of all the substituents are each an alkyl group having 1 or 2 carbon atoms; and n represents an integer of 4 to 10.
    Type: Application
    Filed: February 25, 2008
    Publication date: September 11, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shunsuke Shioya, Koichi Suzuki, Satoru Shiobara
  • Publication number: 20080213623
    Abstract: The invention relates to a method for producing polyfluoroanthenes containing repeat units of general formula (I), said method consisting of the following steps: a) a monomer fluoroanthene derivative of formula IIa is produced; b) optionally the monomer fluoroanthene derivative of formula IIa is converted into another monomer fluoroanthene derivative of formula IIb; and c) the monomer fluoroanthene derivative of formula IIa or IIb is polymerised, optionally together with at least one other comonomer. The invention also relates to polyfluoroanthenes that can be produced according to the inventive method, films, a light-emitting layer containing or consisting of at least one inventive polyfluoroanthene, OLEDs containing at least one inventive polyfluoroanthene, OLEDs containing an inventive light-emitting layer, a device containing an inventive OLED, and the use of the inventive polyfluoroanthene emitter substances in OLEDs.
    Type: Application
    Filed: April 3, 2006
    Publication date: September 4, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Florian Dotz, Simon Nord, Horst Weiss, Joachim Rosch
  • Publication number: 20080213624
    Abstract: There is provided an organic electronic device having an anode and a cathode and having organic layers therebetween. The organic layers are, in order: a buffer layer including a conductive polymer and a fluorinated acid polymer; a hole transport layer; a photoactive layer including a dopant material and a host material; and an electron transport layer; wherein at least one of the dopant material and the host material is a fused polycyclic aromatic compound.
    Type: Application
    Filed: February 26, 2008
    Publication date: September 4, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: DANIEL DAVID LECLOUX, Eric Maurice Smith, Norman Herron, Charles J. Dubois, Weishi Wu
  • Publication number: 20080200736
    Abstract: A fluorene compound and an organic light-emitting element including the fluorene compound are provided. The fluorene compound is represented by the following general formula [1], and the fluorene compound is a material for an organic light-emitting element. A steric hindrance group is introduced directly on a fluorene ring in the fluorene compound.
    Type: Application
    Filed: February 14, 2008
    Publication date: August 21, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuya Kosuge, Jun Kamatani, Naoki Yamada, Ryota Ooishi, Shinjiro Okada
  • Publication number: 20080171228
    Abstract: Systems for displaying images. An exemplary embodiment of a system comprises an organic electroluminescent diode, having a hole injection layer. The hole injection layer comprises compounds having the structure showing in formula wherein at least one of two adjacent R1 groups link together with the carbon atoms to which they are attached to form a saturated ring system having from 4 to 20 atoms, and remaining R1 and R2 are the same or different and comprise hydrogen or halogen atom.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 17, 2008
    Applicant: TPO DISPLAYS CORP.
    Inventors: Liang-Jyi Chen, Hsiang-Lun Hsu
  • Publication number: 20080160345
    Abstract: An object is to provide an organometallic complex that can emit red light. Another object is to provide an organometallic complex having high emission efficiency. Still another object is to provide an organometallic complex that can emit red light with high luminous efficiency. The present invention provides an organometallic complex having a structure represented by the following general formula (G1?). In the formula, Ar represents an aryl group having 6 to 25 carbon atoms; R1 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an alkoxy group having 1 to 4 carbon atoms; R2 to R8 each represent any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and a halogen group; at least one of pairs R3 and R4, R4 and R5, and R5 and R6 may be bound to each other to form a ring; and M represents a central metal of Group 9 elements and Group 10 elements.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 3, 2008
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideko Inoue, Satoshi Seo, Nobuharu Ohsawa
  • Patent number: 7368093
    Abstract: Fused solid of an europium halide containing a less amount of europium oxyhalide impurities is prepared by a process in which a starting europium halide is heated to fuse in the presence of a halogen source and then cooled to give the fused solid.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: May 6, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Tomotake Ikada, Atsunori Takasu, Yasuo Iwabuchi
  • Patent number: 7354526
    Abstract: A processing method for glass substrate of the present invention includes: applying heat and external force to a glass substrate and then cooling it down to thereby form a compression stressed part having a different etching rate from that of other parts with respect to an etching reagent to be used, on the surface of the glass substrate and in the vicinity thereof, and performing chemical etching using the etching reagent on the glass substrate having the compression stressed part formed thereon, so as to form a relief on the surface of the glass substrate.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: April 8, 2008
    Assignees: Olympus Corporation, Nippon Sheet Glass Co., Ltd.
    Inventors: Takeshi Hidaka, Hiroaki Kasai, Masamichi Hijino, Yasushi Nakamura, Akihiro Koyama, Keiji Tsunetomo, Junji Kurachi, Hirotaka Koyo, Shinya Okamoto, Yasuhiro Saito
  • Publication number: 20080038584
    Abstract: A main object of the present invention is to provide an organic EL element having high chromatic purity and excellent display quality. To achieve the object, the present invention provides an organic electroluminescence element comprising: a transparent substrate; a transparent or semitransparent-first electrode layer formed on the transparent substrate; an organic EL layer formed on the transparent or semitransparent-first electrode layer and containing at least a light emitting layer; a semitransparent-second electrode layer formed on the organic EL layer; a transparent or semitransparent-optical path length adjusting layer formed on the semitransparent-second electrode layer and made of an inorganic material; and a reflecting layer formed on the transparent or semitransparent-optical path length adjusting layer.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 14, 2008
    Inventor: Tomonori AKAI
  • Patent number: 7294960
    Abstract: An organic EL device comprises a plurality of organic EL elements, each of which has a pair of electrodes and functional layers including at least a light-emitting layer between the electrodes. With respect to components other than the light-emitting layer, the structure of the functional layer in one organic EL element among the organic EL elements is different from those of the functional layers in other organic EL elements.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: November 13, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Shunichi Seki, Masahiro Uchida
  • Patent number: 7199519
    Abstract: The luminance of different colors of light emitted from EL elements in a pixel portion of a light emitting device is equalized and the luminance of light emitted from the EL elements is raised. The pixel portion of the light emitting device has EL elements whose EL layers contain triplet compounds and EL elements whose EL layers contain singlet compounds in combination. The luminance of light emitted from the plural EL elements is thus equalized. Furthermore, a hole transporting layer has a laminate structure to thereby cause the EL elements to emit light of higher luminance.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: April 3, 2007
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Nishi, Mayumi Mizukami, Hisao Ikeda
  • Patent number: 7125998
    Abstract: The present invention relates to novel organometallic compounds which are phosphorescence emitters. Compounds of this type can be used as active components (=functional materials) in a series of different types of, application which can be classed within the electronics industry in the broadest sense. The compounds according to the invention are described by the formulae (I), (Ia), (II), (IIa), (V), (VII), (IX), (XI), (XIII) and (XV).
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: October 24, 2006
    Assignee: Merck Patent GmbH
    Inventors: Philipp Stossel, Hubert Spreitzer, Heinrich Becker
  • Patent number: 7049010
    Abstract: Provided is a conjugated poly(1,4-arylene vinylene) compound comprising an arylene unit having adjacent substituents, said substituents being oriented such as to affect the electronic structure of the compound sufficiently to cause a blue-shift in the photoluminescence and/or electroluminescence of the compound.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: May 23, 2006
    Assignee: Cambridge Display Technology Limited
    Inventors: Andrew Bruce Holmes, Beng Sim Chuah, Franco Cacialli, Steven Carl Moratti
  • Patent number: 7042151
    Abstract: The luminance of different colors of light emitted from EL elements in a pixel portion of a light emitting device is equalized and the luminance of light emitted from the EL elements is raised. The pixel portion of the light emitting device has EL elements whose EL layers contain triplet compounds and EL elements whose EL layers contain singlet compounds in combination. The luminance of light emitted from the plural EL elements is thus equalized. Furthermore, a hole transporting layer has a laminate structure to thereby cause the EL elements to emit light of higher luminance.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: May 9, 2006
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Nishi, Mayumi Mizukami, Hisao Ikeda
  • Patent number: 7018724
    Abstract: In an organic EL device comprising a cathode, an anode, and two or more stacked organic layers therebetween including a light emitting layer, an electron injecting organic layer containing an organic salt or complex of a metal having a standard electrode potential of more negative than ?1.8 V at 25° C. is formed close to the cathode by coating, and an organic layer containing a high molecular weight EL material is disposed close to the electron injecting organic layer. A multilayer structure of organic layers can be formed by coating, and the organic EL device has a high luminance, high efficiency, high reliability, long life and ease of handling.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: March 28, 2006
    Assignee: TDK Corporaiton
    Inventors: Emiko Kambe, Masahiro Shinkai
  • Patent number: 7012368
    Abstract: There is provided an organic electro luminescence device which includes at least one thin organic layer between an anode substrate and a cathode. The cathode includes first to fourth electrodes stacked on the thin organic layer. The first and third electrodes are formed of alkali metal or alkali earth metal, and the second and fourth electrodes are formed of aluminum (Al) or silver (Ag).
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: March 14, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Kyung Man Kim
  • Patent number: 6916501
    Abstract: The present invention discloses a method for fabricating an electroluminescent lamp that includes a step in which an electroluminescent active layer is formed by curing a UV curable electroluminescent composition. Embodiments of the method of the present invention in which each layer of a multilayer electroluminescent device are fabricated from UV curable compositions are also disclosed. A UV curable dielectric composition suitable for utilization in an electroluminescent lamp is also provided.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: July 12, 2005
    Assignee: Allied PhotoChemical, Inc.
    Inventors: Roy C. Krohn, Scott E. Howe, Christopher C. Ryan
  • Patent number: 6908695
    Abstract: A light emitting element having a superior light emitting characteristic is provided by forming a region partly including a phosphor (light emitting region) in manufacturing of a light emitting element having an organic compound layer using a high molecular weight material. A solution in which a high polymer having a degree of polymerization of 50 or more is dissolved in a solvent is applied by a spin coating method, and then a low polymer which is composed of the same repetition units as the high polymer and has a degree of polymerization of 2 to 5 and a phosphor are coevaporated to form a light emitting region (105) and only a low polymer is vapor-deposited on the light emitting region to form an organic compound layer (103). Thus, the light emitting region (105) can be partly formed.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: June 21, 2005
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Satoko Shitagaki
  • Patent number: 6905785
    Abstract: Provided is a method of producing a polymeric fluorescent substance wherein one or more monomers represented by the general formula (1) are polymerized in the presence of a zerovalent nickel complex, X1—Ar1—X2??(1) wherein, Ar1 represents a divalent group selected from the group consisting of arylene groups, divalent heterocyclic compound groups, and divalent or trivalent hetero atom-bonded arylene or divalent heterocyclic compound groups, and X1 and X2 represent leaving groups. By using the polymeric fluorescent substance, a high performance polymer LED can easily be obtained.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: June 14, 2005
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takanobu Noguchi, Yoshiaki Tsubara, Shuji Doi
  • Patent number: 6887972
    Abstract: A polymeric material comprising alternate substituted fluorene and phenylene units, as represented by the following formula wherein R1, R2, R3 and R4, which may be identical or different, are each selected from the group consisting of H, a (C1-C22) linear or branched alkyl, alkoxy or oligo (oxyetylene) group, a (C6-C30) cycloalkyl group, and an unsubstituted or substituted aryl group, and n is from about 3 to about 5000.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: May 3, 2005
    Assignee: Agency for Science, Technology and Research
    Inventors: Wei Huang, Wang Lin Yu, Jian Pei, Soo Jin Chua
  • Patent number: 6885149
    Abstract: A highly transparent non-metallic cathode is disclosed that comprises a metal-doped organic electron injection layer that is in direct contact with a transparent non-metallic electron injecting cathode layer, such as indium tin oxide (ITO), wherein the metal-doped organic electron injection layer also functions as an exciton blocking or hole blocking layer. The metal-doped organic electron injection layer is created by diffusing an ultra-thin layer of about 5-10 ? of a highly electropositive metal such as Li throughout the layer. A representative embodiment of the highly transparent non-metallic cathode comprises a layer of ITO, a layer of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), which acts as an electron injection, exciton blocking, and hole blocking layer, and an ultra-thin layer of lithium, which degenerately dopes the layer of BCP, improving the electron injecting properties of the BCP layer.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: April 26, 2005
    Assignee: The Trustees of Princeton University
    Inventors: Gautam Parthasarathy, Chihaya Adachi, Paul E. Burrows, Stephen R. Forrest
  • Patent number: 6864628
    Abstract: The luminance of different colors of light emitted from EL elements in a pixel portion of a light emitting device is equalized and the luminance of light emitted from the EL elements is raised. The pixel portion of the light emitting device has EL elements whose EL layers contain triplet compounds and EL elements whose EL layers contain singlet compounds in combination. The luminance of light emitted from the plural EL elements is thus equalized. Furthermore, a hole transporting layer has a laminate structure to thereby cause the EL elements to emit light of higher luminance.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: March 8, 2005
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Nishi, Mayumi Mizukami, Hisao Ikeda
  • Patent number: 6815095
    Abstract: A binderless stimulable phosphor screen is provided, comprising a vapor deposited phosphor layer on a support, wherein between the support and the phosphor layer a ceramic layer is present, wherein said ceramic layer preferably comprises a mixture of pigments so that the optical density of the phosphor screen is higher for the stimulating wavelength than for the stimulated emission wavelength of the vapor deposited phosphor.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: November 9, 2004
    Assignee: AGFA-Gevaert
    Inventors: Paul Leblans, Luc Struye, Ludo Joly