Electroluminescent Lamp Patents (Class 427/66)
  • Publication number: 20090053396
    Abstract: An object of the invention is to improve patterning accuracy while maintaining low cost, high throughput and a high degree of freedom of an optical material in a matrix type display device and a manufacturing method thereof. In order to achieve the object, a difference in height, a desired distribution of liquid repellency and affinity to liquid, or a desired potential distribution is formed by utilizing first bus lines in a passive matrix type display device or utilizing scanning lines, signal lines, common current supply lines, pixel electrodes, an interlevel insulation film, or a light shielding layer in an active matrix type display device. A liquid optical material is selectively coated at predetermined positions by utilizing the difference in height, the desired distribution of liquid repellency and affinity to liquid, or the desired potential distribution.
    Type: Application
    Filed: August 27, 2008
    Publication date: February 26, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Mutsumi Kimura, Hiroshi Kiguchi
  • Publication number: 20090041929
    Abstract: In an apparatus for film formation, constituted so that an organic EL molecular gas is ejected into an ejection vessel, a plurality of organic EL material vessels are provided together with a piping system for connecting the plurality of organic EL material vessels to the ejection vessel. The plurality of organic EL material vessels are selectively put into a supply state of organic EL molecules. The piping system is constructed so that the carrier gas is fed into each organic EL material vessel in such a manner that the pressure during film formation and the pressure during non-film formation are equal to each other. During non-film formation, the carrier gas is allowed to flow from one of the organic EL material vessels to other material vessel.
    Type: Application
    Filed: March 28, 2006
    Publication date: February 12, 2009
    Applicants: TOHOKU UNIVERSITY
    Inventors: Tadahiro Ohmi, Takaaki Matsuoka, Shozo Nakayama, Hironori Ito
  • Patent number: 7488542
    Abstract: Organic light emitting devices are disclosed which are comprised of a heterostructure for producing electroluminescence wherein the heterostructure is comprised of an emissive layer containing a phosphorescent dopant compound.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: February 10, 2009
    Assignees: The Trustees of Princeton University, The University of Southern California
    Inventors: Mark E. Thompson, Yujian You, Andrei Shoustikov, Scott Sibley, Paul E. Burrows, Stephen R. Forrest
  • Patent number: 7488506
    Abstract: The present invention provides a manufacturing method for forming an organic electro-luminescent device by forming a homogeneous light emitting layer which does not incur the phase separation. The light emitting layer is formed by discharging ink compositions composed of at least two electro-luminescent materials on the substrate following the order which starts with an ink composition which has the fewest number of organic electro-luminescent materials or which is most difficult to be phase separated.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: February 10, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Katsuyuki Morii, Shunichi Seki
  • Publication number: 20090033207
    Abstract: A method is provided for fabricating a high quantum efficiency silicon (Si) nanoparticle embedded SiOXNY film for luminescence (electroluminescence—EL and photoluminescence—PL) applications. The method provides a bottom electrode, and deposits a Si nanoparticle embedded non-stoichiometric SiOXNY film, where (X+Y<2 and Y>0), overlying the bottom electrode. The Si nanoparticle embedded SiOXNY film is annealed. The annealed Si nanoparticle embedded SiOXNY film has an extinction coefficient (k) of less than about 0.001 as measured at 632 nanometers (nm), and a PL quantum efficiency (PLQE) of greater than 20%.
    Type: Application
    Filed: October 11, 2008
    Publication date: February 5, 2009
    Inventors: Pooran Chandra Joshi, Jiandong Huang, Apostolos T. Voutsas
  • Patent number: 7485337
    Abstract: A method of transferring organic material from a donor element onto a substrate of an OLED device, includes providing a linear laser light beam which is moved relative to the donor element and substrate and which has a predetermined number of laser modulatable channels, each of which when activated causes laser light to illuminate the donor element which heats to a sufficient level to vaporize organic material and transfer such material onto a substrate; and selecting the pattern of activated laser modulatable channels such that only a portion of the OLED device receives organic material during a single relative motion pass of the linear laser light beam to the donor element and substrate.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: February 3, 2009
    Assignee: Eastman Kodak Company
    Inventors: Kelvin Nguyen, Lee W. Tutt, Michael L. Boroson
  • Publication number: 20090026943
    Abstract: An optical device is provided which is capable of emitting light of a predetermined color (mixed color) other than the intrinsic colors of light emitting layers from each pixel, with a simple design, and with a reduced number of drive lines (electrodes) to achieve the predetermined color (mixed color). The optical device 1 includes one or a plurality of self light emitting elements 100, each one of which corresponds to one pixel 10 that includes a pair of electrodes 3 and 8 formed on a substrate 2 and at least a light emitting layer 6 between the electrodes. The light emitting layer 6 includes a first light emitting layer 61 that at least emits light of a first color and a second light emitting layer 62 that emits light of a second color that is different from the first color in each pixel 10. There are a first light emitting region 161 that emits light of the first color and a second light emitting region 162 that emits light of the second color within the same opening 11 of each pixel 10.
    Type: Application
    Filed: January 27, 2006
    Publication date: January 29, 2009
    Inventor: Toshinao Yuki
  • Publication number: 20090026930
    Abstract: An aromatic compound represented by Formula 1 below and an organic light-emitting diode including the same: M1-(B)n-M2 ??(1) The aromatic compound has excellent thermal stability and emission characteristics. Thus, the organic light-emitting diode employing the aromatic compound can exhibit a low driving voltage, high efficiency, and high brightness.
    Type: Application
    Filed: March 28, 2008
    Publication date: January 29, 2009
    Inventors: Dong-woo Shin, Byoung-ki Choi, Tae-yong Noh, O-hyun Kwon, Myeong-suk Kim, Yu-jin Kim, Eun-sil Han, Woon-jung Paek
  • Publication number: 20090026927
    Abstract: A display device, includes: an insulating substrate; a common electrode which is formed on the insulating substrate; a common voltage applying layer which is formed between the insulating substrate and the common electrode, and comprises an upper surface which faces the common electrode and a side surface of the opposite sides of the upper surface; and an organic insulating layer which is formed between the insulating substrate and the common electrode, and is formed with a contact hole which exposes at least a part of the side surface of the common voltage applying layer, the common electrode electrically connected to a side surface contact portion of the common voltage applying layer which is exposed through the contact hole.
    Type: Application
    Filed: February 13, 2008
    Publication date: January 29, 2009
    Inventors: Beohm-rock Choi, Un-cheol Sung, Jung-soo Rhee, Young-rok Song
  • Publication number: 20090021154
    Abstract: Provided is an organic light-emitting apparatus in which a crack or the like produced when removing a passivation layer on an external connection terminal is prevented from developing with the elapse of time and the moisture resistance of a light-emitting area is not impaired. The organic light-emitting apparatus includes a substrate; an organic planarization layer for planarizing unevenness of the substrate; an organic light-emitting device including a lower electrode, an organic compound layer, and an upper electrode; and a passivation layer for covering the organic light-emitting device, in which the organic planarization layer has formed therein a recessed or protruding discontinuous portion for dividing a region including a light-emitting area and a region including an external connection terminal, and the discontinuous portion is covered with the passivation layer.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 22, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yukito Aota
  • Publication number: 20090021159
    Abstract: The present invention provides an organic light emitting device, wherein an electron injecting electrode, at least one organic material layer including a light emitting layer, and a hole injecting electrode are laminated; and an inorganic insulating layer formed from the materials having a band gap of 3.3 eV or more, and a band offset of 0.45 eV or less, is provided between the electron injecting electrode and the organic material layer; and a method for preparing the same.
    Type: Application
    Filed: February 5, 2007
    Publication date: January 22, 2009
    Inventor: Jung-Hyoung Lee
  • Patent number: 7479051
    Abstract: There is provided an organic EL panel which is obtained by sequentially laminating a first electrode, an organic material layer and a second electrode on a substrate and selectively providing a light emitting portion, being a portion of emitting light, in the organic material layer, wherein the organic material layer is heated at a position other than the light emitting portion with a heating member having a deformable heating portion to change an optical characteristic of the position while avoiding deterioration of the first electrode, the second electrode and the substrate.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: January 20, 2009
    Assignee: Pioneeer Corporation
    Inventor: Ayako Yoshida
  • Publication number: 20090017192
    Abstract: Provided is a method for moving, in a vacuum chamber carrying therein a fixedly-provided evaporation source, a substrate toward the evaporation source together with a mask closely attached to the substrate surface, and onto the surface substrate, evaporating a material vaporized in the evaporation source through an aperture formed to the mask. In this method of the invention, means for moving the substrate toward the evaporation source is provided with cooling means not to come in contact with but to be in proximity to a surface of the mask on the evaporation source side, and a cooling plate formed with an aperture proximal to the evaporation source is disposed. With such a configuration, the steam of the material coming from the evaporation source is directed to the mask and the substrate through the aperture of the cooling plate.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 15, 2009
    Inventor: Hiroyasu Matsuura
  • Publication number: 20090015149
    Abstract: An organic electroluminescent device and a method of fabricating the same are provided. The organic electroluminescent device includes a first substrate, a second substrate, a thin film transistor formed on the first substrate, a light emitting diode comprising first and second electrodes and an organic luminescent layer that are formed on the thin film transistor, and first and second passivation layers formed on the first substrate on which the light emitting diode is formed.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 15, 2009
    Inventors: Jae Yoon Lee, Kang Ju Lee, Se Young Park
  • Publication number: 20090014412
    Abstract: A film forming apparatus is provided with a processing chamber having a substrate holding table for holding a substrate to be processed inside the container; a gas material generation unit arranged outside the processing chamber, for generating a gas material by evaporating or sublimating a film forming source material including a metal; a gas material supply unit for supplying the processing chamber with the gas material; and a transport path for transporting the gas material to the gas material supply unit from the gas material generation unit. The film forming apparatus is characterized in that a metal-containing layer is formed on an organic layer including a light emitting layer on the target substrate.
    Type: Application
    Filed: February 20, 2007
    Publication date: January 15, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Toshihisa Nozawa, Shingo Watanabe
  • Publication number: 20090015150
    Abstract: Disclosed is an organic light emitting device and a method for manufacturing the same. The organic light emitting device includes a first electrode, one or more organic compound layers, and a second electrode. The first electrode includes a conductive layer and an n-type organic compound layer disposed on the conductive layer. A difference in energy between an LUMO energy level of the n-type organic compound layer of the first electrode and a Fermi energy level of the conductive layer of the first electrode is 4 eV or less. One of the organic compound layers interposed between the n-type organic compound layer of the first electrode and the second electrode is a p-type organic compound layer forming an NP junction along with the n-type organic compound layer of the first electrode. A difference in energy between the LUMO energy level of the n-type organic compound layer of the first electrode and an HOMO energy level of the p-type organic compound layer is 1 eV or less.
    Type: Application
    Filed: June 19, 2008
    Publication date: January 15, 2009
    Applicant: LG CHEM, LTD.
    Inventors: Min-Soo Kang, Se-Hwan Son, Hyeon Choi
  • Publication number: 20090003882
    Abstract: An insulator (12), which is provided between a lower electrode (11) by patterning a substrate and a counter electrode (15), defines a light emitting area by covering on ends of the lower electrode (11). The light emitting area (13) has a shape of which edges in a first direction of the substrate are defined by at least the insulator (12) and other edges in a second direction on the substrate different from the first direction are defined by one of the lower electrode (11) and the counter electrode (15). A plurality of the light emitting elements is placed independent electrically in the second direction on the substrate, whereby a light emitting array and an exposure apparatus is formed.
    Type: Application
    Filed: April 20, 2006
    Publication date: January 1, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tetsurou Nakamura, Yuuji Toyomura
  • Publication number: 20090004365
    Abstract: An OLED includes an anode formed over a substrate and a contaminant-scavenging layer formed over the anode, wherein the contaminant-scavenging layer includes one or more organic materials but not a hexaazatriphenylene derivative, each having an electron-accepting property and a reduction potential greater than ?0.1 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials provide more than 50% by mole ratio of the contaminant-scavenging layer. The OLED also includes an organic electroluminescent unit formed over the contaminant-scavenging layer, wherein the organic electroluminescent unit includes a hole-transporting layer, a light-emitting layer, and an electron-transporting layer, and a cathode formed over the organic electroluminescent unit.
    Type: Application
    Filed: September 8, 2008
    Publication date: January 1, 2009
    Inventors: Liang-Sheng Liao, Kevin P. Klubek, Wojciech K. Slusarek, Tukaram K. Hatwar
  • Publication number: 20080315756
    Abstract: An organic light emitting display and a manufacturing method that prevents an open edge from occurring when forming an emission layer of an organic light emitting display in order to prevent a dielectric breakdown from occurring at the edge of an anode electrode. The organic light emitting display includes: a substrate; an active layer formed on the substrate; a planarization layer formed on the active layer; an anode electrode formed on the planarization layer; a pixel definition layer formed on the upper surface of the planarization layer to cover an edge of the anode electrode; and an organic thin film formed on the pixel definition layer, wherein the pixel definition layer includes a thick film portion and a step portion that is formed to be stepped down at both ends of the thick film portion.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 25, 2008
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Heechul JEON, Juwon YOON
  • Publication number: 20080315757
    Abstract: An electronic device containing a hole transporting semiconductive polymer comprising a first repeat unit comprising a first nitrogen of a triarylamine in the polymer backbone and a second nitrogen of an arylamine pendant from the polymer backbone, characterised in that said semiconductive polymer performs the function of transporting holes to or from a semiconductive material in said device.
    Type: Application
    Filed: December 18, 2006
    Publication date: December 25, 2008
    Applicants: Cambridge Display Technology Limited, CDT Oxford Limited
    Inventors: Mary McKiernan, Natasha Conway, Richard Wilson
  • Publication number: 20080309229
    Abstract: A semiconductive polymer comprising a first repeat unit in the polymer backbone comprising general formula 1: where a=1 or 2; b=0 or 1; and c=0, 1 or 2, provided that when c=0 then b=0; Ar1, Ar2, Ar3, Ar4, Ar5, and Ar6 each independently represent an aryl or heteroaryl ring or a fused derivative thereof; characterised in that at least one of Ar1, Ar2, Ar4, and Ar5 is non-conjugating; and provided that (a) when a=1, Ar1 is not linked to Ar2 by a direct bond, (b) when b=1 and c=1, Ar4 is not linked to Ar5 by a direct bond, (c) when b=0 and c=1, Ar2 is not linked to Ar5 by a direct bond, (d) when a=2, the Ar1 groups are not linked by a single bond, and (e) when c=2, the Ar5 groups are not linked by a single bond.
    Type: Application
    Filed: December 18, 2006
    Publication date: December 18, 2008
    Applicants: Cambridge Display Technology Limited, CDT Oxford Limited
    Inventors: Annette Steudel, Nalinkumar Lallubhai Patel, Jonathan Pillow, Mary McKiernan, Sophie Heidenhain, Natasha Conway
  • Publication number: 20080309230
    Abstract: An organic electroluminescence display device made by a laser induced thermal imaging process has a substrate having first and second electrode layers, and an organic layer having red, green, and blue light-emitting layers between the electrode layers. Thermosetting light-emitting materials are used to form the red, green, and blue light-emitting layers, and a laser is then selectively irradiated onto a light-to-heat conversion layer formed on the substrate to deliver heat energy converted from light energy through the light-to-heat conversion layer to the thermosetting light-emitting materials so that curing is progressed to form patterned light-emitting layers. In accordance with the fabrication method of the present invention, the light-emitting materials may be patterned using a laser, thereby fabricating a large scaled organic electroluminescence display device and simplifying the process by not using a mask when the light-emitting layers are formed.
    Type: Application
    Filed: July 22, 2008
    Publication date: December 18, 2008
    Inventors: Nam-Choul Yang, Tae-Min Kang, Myung-Won Song, Seong-Taek Lee, Min-Chul Suh, Byung-Doo Chin, Mu-Hyun Kim
  • Publication number: 20080305245
    Abstract: Disclosed are compositions, useful in ink jet printing methods, that prevent clogging during dispensing, achieve stable dispensing, prevent precipitating of content matter during dispensing, and prevent phase separation during film formation. Also disclosed are uniform, homogenous, functional films formed using the compositions and manufacturing methods therefor, as well as organic EL devices and other such display devices and manufacturing methods therefor. The compositions contain a functional material and a solvent comprising at least one benzene derivative having one or more substituents, whereby the substituents have at least three carbon atoms in total.
    Type: Application
    Filed: August 4, 2008
    Publication date: December 11, 2008
    Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, SEIKO EPSON CORPORATION
    Inventors: Sadao Kanbe, Shunichi Seki
  • Patent number: 7462372
    Abstract: A method of manufacturing a light emitting device of upward emission type and a thin film forming apparatus used in the method are provided. A plurality of film forming chambers are connected to a first transferring chamber. The plural film forming chambers include a metal material evaporation chamber, an EL layer forming chamber, a sputtering chamber, a CVD chamber, and a sealing chamber. By using this thin film forming apparatus, an upward emission type EL element can be fabricated without exposing the element to the outside air. As a result, a highly reliable light emitting device is obtained.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: December 9, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshimitsu Konuma, Hiroko Yamazaki
  • Publication number: 20080299294
    Abstract: The present invention discloses an anthracene compound which can be used as emitting material in organic electroluminescence devices is disclosed. The mentioned anthracene compound is represented by the following formula [I] Wherein Ar1 and Ar2 are the same or different and each is selected from a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted anthryl group.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 4, 2008
    Inventor: Feng-Wen Yen
  • Publication number: 20080299398
    Abstract: In a light emitting device having a light emitting element, mounted on a substrate, at least one portion of which is coated with a mold component, the mold component is provided with resin particles and or inorganic material particles, phosphor particles and a sealing resin, and phosphor particles have a specific gravity different from that of resin particles and/or the inorganic material particles, and are made from a grain-shaped phosphor which, when irradiating with excited light, emits fluorescent light having a wavelength longer than that of the excited light, with resin particles and/or the inorganic material particles and the phosphor particles being dispersed in sealing resin; thus, the present invention relates to such a light emitting device and a method for manufacturing the same.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 4, 2008
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Toshio Hata, Masahiro Konishi, Makoto Agatani
  • Publication number: 20080299365
    Abstract: Organic light emitting devices including an electron transport-emission layer, and methods of preparing the same are included. The electron transport-emission layer may be an electron transport-red emission layer, an electron transport-green emission layer or an electron transport-blue emission layer. The methods produce high yields of the organic light emitting devices and are less expensive than conventional methods.
    Type: Application
    Filed: May 16, 2008
    Publication date: December 4, 2008
    Inventors: Kyung-Hoon Choi, Kwan-Hee Lee, Min-Seung Chun, Choon-Woo Lim
  • Publication number: 20080299295
    Abstract: As finer patterns of relief printing plates are produced, the spacing between the convex portions of the relief printing plates decreases, and a sufficient relief depth, which is the depth of a concave portions between the convex portions, cannot be obtained. In one embodiment of the present invention, there is provided a relief printing plate for use when a coating liquid is supplied to convex portions of the relief printing plate, the coating liquid located on the convex portions is printed, and a pattern composed of the coating liquid is formed on the print surface, this relief printing plate comprising a metal support having convex portions and a resin layer disposed on the convex portions of the support.
    Type: Application
    Filed: September 21, 2007
    Publication date: December 4, 2008
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Hironori Kawakami, Koji Takeshita, Takahisa Shimizu, Nahoko Inokuchi
  • Publication number: 20080297045
    Abstract: A light-emitting device, including a substrate and a first electrode formed over the substrate. A light-emitting layer is formed over the first electrode. A second electrode is formed over the light-emitting layer. At least one of the first and second electrodes is transparent. A light-scattering layer comprising electrically-conductive, light-scattering particles is located in physical and electrical contact with the first or second electrode. The light-scattering layer is formed on a side of the first or second electrode, and opposite the light-emitting layer.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 4, 2008
    Inventor: Ronald S. Cok
  • Publication number: 20080290795
    Abstract: Provided is an organic electroluminescence device in which a reduction in luminance is suppressed and a lifetime is significantly improved. The object is achieved by an organic electroluminescence device having organic compound layers including an organic emitting layer, which is interposed between at least one pair of electrodes, in which the organic emitting layer is formed of an organic compound material containing an impurity composed of a hydroxyl group-containing compound at a concentration of less than 0.15% by mass, and a method of selecting an organic compound material for the organic electroluminescence device, the method including: determining the content of the impurity; and selecting an organic compound material in which the content is less than 0.15% by mass so that the material is used for forming the organic emitting layer. Provided are a coating film-forming ink, a method of forming a thin film, and a method of producing an organic electroluminescence device.
    Type: Application
    Filed: April 4, 2008
    Publication date: November 27, 2008
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Takayasu Sado, Kiyoshi Ikeda, Kenichi Fukuoka, Chishio Hosokawa
  • Publication number: 20080286566
    Abstract: There is provided a new process for forming a light-emitting diode device having first, second, and third subpixel areas. In the process a hole injection layer is applied over an anode layer. The hole injection material has a conductive polymer and a fluorinated acid polymer. A hole transport layer is applied over the hole injection layer. A first electroluminescent material which is either green or red, is applied to the first subpixel areas. A second electroluminescent material which is either red or green, is applied to the second subpixel areas. A hole-blocking layer is applied overall. A blue electroluminescent material is applied overall, followed by deposition of a cathode. The second electroluminescent material emits a color different from that of the first electroluminescent material.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 20, 2008
    Inventor: SHIVA PRAKASH
  • Publication number: 20080286487
    Abstract: There is provided a process for forming a contained second layer over a first layer, including the steps: forming the first layer having a first surface energy and a first glass transition temperature; condensing an intermediate material over and in direct contact with the first layer to form an intermediate layer, said intermediate layer having a second surface energy which is lower than the first surface energy; patterning the intermediate layer to form uncovered areas of the first layer and covered areas of the first layer; and forming a contained second layer over the uncovered areas of the first layer. There is also provided a process for making an organic electronic device.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 20, 2008
    Inventors: Charles D. Lang, Paul Anthony Sant, Alberto Goenaga
  • Patent number: 7453201
    Abstract: In a display apparatus, second organic EL elements are closer to the edge of a display portion than first organic EL elements. The voltage drop in the first organic EL element is larger than that in the second organic EL element. The thickness of the organic compound layer in the first organic EL element is different from the thickness of the organic compound layer in the second organic EL element. The light-extraction efficiency in the first organic EL element is higher than the light-extraction efficiency in the second organic EL element.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: November 18, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuhito Goden, Somei Kawasaki, Masami Iseki
  • Patent number: 7452614
    Abstract: The present invention is related to a luminescent material generated by polymerization of a pyrromethene complex by glow discharge. The polymer material of the present invention exhibits semi-conductive properties and has a luminescence maximum in a spectrum region in the range of about 540 nm to about 585 nm with a half-width of the luminescence band in the range of about 55 nm to about 75 nm, a quantum yield of photoluminescence in the range of about 0.6 to about 0.8, and an electric conductivity at a temperature of about 20° C. in the range of about 1×10?10 S/cm to about 5×10?10 S/cm. The resultant polymer layer has a thickness in the range of about 0.01 ?m to about 10 ?m on a substrate placed between or on any of the electrodes. The starting pyrromethene complex may be a 1,3,5,7,8-pentamethyl-2,6-diethylpyrromethene difluoroborate complex (pyrromethene 567).
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: November 18, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Alexandr Ivanovich Drachev, Alla Borisovna Gilman, Alexandr Alexeevich Kuznetsov, Nikolay Mikhaylovich Surin
  • Patent number: 7452257
    Abstract: In order to suppress defect modes such as shrinkage or unevenness in light-emission in a light emitting element and to shorten a time needed for a pretreatment for forming a layer containing an organic compound (EL layer), according to the present invention, a light emitting element is formed by forming a first electrode that is electrically connected to a source region or a drain region of a thin film transistor, forming an insulating film to cover an edge portion of the first electrode, performing a plasma treatment on the first electrode and the insulating film in an atmosphere containing argon and oxygen, then, forming a layer containing an organic compound (EL layer) over the first electrode and the insulating film, and forming a second electrode over the layer containing an organic compound (EL layer).
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: November 18, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kaoru Tsuchiya, Ayumi Ishigaki, Keiko Saito
  • Publication number: 20080280161
    Abstract: A light emitting diode device includes a light emitting diode chip and a nanocrystal-metal oxide monolith having a nanocrystal-metal oxide composite disposed on a light emitting surface of the light emitting diode chip
    Type: Application
    Filed: April 30, 2008
    Publication date: November 13, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun Joo JANG, Shin Ae JUN, Jung Eun LIM
  • Publication number: 20080280162
    Abstract: An organic electronic device includes: a pair of electrodes, an organic film layer containing an organic substance having a benzothiadiazole skeleton, a metal oxide layer provided on the organic film layer by vacuum vapor deposition, and an interface formed between the pair of electrodes out of the organic film layer and the metal oxide layer.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Applicant: Seiko Epson Corporation
    Inventor: Katsuyuki Morii
  • Patent number: 7449252
    Abstract: An organic electroluminescent device, comprising an anode; a cathode; and a light-emitting functional portion sandwiched between the anode and the cathode, the light-emitting functional portion including a light-emitting part, an electron injection and transport part, and a hole injection and transport part; the anode being in contact with a titanium oxide particle thin layer.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: November 11, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Katsuyuki Morii, Hirofumi Sakai, Naoyuki Toyoda
  • Patent number: 7448396
    Abstract: An impurities elimination apparatus including a base plate, a first nozzle for removing impurities on the base plate using air suction, a glass substrate disposed on the base plate, and a second nozzle for coating the glass substrate with an organic material.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: November 11, 2008
    Assignee: LG Display Co., Ltd.
    Inventor: Chul Jeong
  • Publication number: 20080274268
    Abstract: A method of producing an organic EL device is provided that realizes excellent color reproducibility in the organic EL device as a result of the excellent transparency of the passivation layer. During formation of a passivation layer by a CVD method in the production of an organic EL device that is provided with the passivation layer, a layer in which the internal stress is compressive stress and a layer in which the internal stress is tensile stress are stacked by modulating a gas pressure while holding a gas composition ratio constant.
    Type: Application
    Filed: March 24, 2008
    Publication date: November 6, 2008
    Applicant: Fuji Electric Holdings Co., Ltd.
    Inventor: Shinji OGINO
  • Publication number: 20080265756
    Abstract: A conductive composition for use in an organic light-emitting device comprising: a polycation having a conjugated backbone; a polyanion to balance the charge on the polycation; and a semiconductive hole transport polymer containing side groups pendant from the polymer backbone, each side group comprising one or more groups XY, where XY represents a group with a high dissociation constant such that it is ionized completely.
    Type: Application
    Filed: July 14, 2006
    Publication date: October 30, 2008
    Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CDT OXFORD LIMITED
    Inventors: Mary J. McKiernan, Jeremy Burroughes, Annette Steudel
  • Publication number: 20080268136
    Abstract: There is provided a method of producing an organic light emitting apparatus including a substrate, an organic light emitting device formed on the substrate, and a device separating film formed on a periphery of the organic light emitting device, the organic light emitting device including a lower electrode, an organic compound layer, and an upper electrode from the substrate side in the stated order, includes: cleaning a substrate having at least the lower electrode and the device separating film formed thereon by irradiating the substrate with UV-light while introducing gas containing at least oxygen in an atmosphere and exhausting the gas under a pressure in a range of 10 Pa or more to 10,000 Pa or less; forming an organic compound layer on the cleaned lower electrode; and forming an upper electrode on the organic compound layer.
    Type: Application
    Filed: April 23, 2008
    Publication date: October 30, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuzo Tokunaga, Manabu Otsuka, Seiji Mashimo, Taro Endo, Naoya Nishida
  • Publication number: 20080265751
    Abstract: An organic light emissive device comprising: a first electrode; a second electrode; and an organic light emissive region between the first and second electrodes comprising an organic light emissive material which has a peak emission wavelength, wherein at least one of the electrodes is transparent and comprises a composite of a charge injecting metal and another material which is codepositable with the charge injecting metal, the other material having a different refractive index to that of the charge injecting metal and wherein the other material has a lower degree of quenching at the peak emission wavelength than the charge injecting metal whereby quenching of excitons by the at least one electrode is reduced, the charge injecting metal comprising either a low work function metal having a work function of no more than 3.5 eV or a high work function metal having a work function of no less than 4.5 eV.
    Type: Application
    Filed: August 10, 2005
    Publication date: October 30, 2008
    Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Euan C. Smith, Matthew Roberts, William Young, Clare Louise Foden
  • Publication number: 20080258605
    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: Application
    Filed: September 8, 2004
    Publication date: October 23, 2008
    Inventor: Masaya Yukinobu
  • Publication number: 20080260938
    Abstract: An object is to improve use efficiency of an evaporation material, to reduce manufacturing cost of a light-emitting device, and to reduce manufacturing time needed for a light-emitting device including a layer containing an organic compound. The pressure of a film formation chamber is reduced, a plate is rapidly heated by heat conduction or heat radiation by using a heat source, a material layer on a plate is vaporized in a short time to be evaporated to a substrate on which the material layer is to be formed (formation substrate), and then the material layer is formed on the formation substrate. The area of the plate that is heated rapidly is set to have the same size as the formation substrate and film formation on the formation substrate is completed by one application of heat.
    Type: Application
    Filed: December 3, 2007
    Publication date: October 23, 2008
    Inventors: Hisao Ikeda, Tomoya Aoyama, Takahiro Ibe, Yoshiharu Hirakata, Shunpei Yamazaki
  • Publication number: 20080258611
    Abstract: An organic electroluminescent structure has a first electrode, a first primary color luminescent patterned layer disposed on the first electrode, a second primary color luminescent patterned layer disposed on the first electrode, a third primary color luminescent and electron transport layer disposed on the first electrode, the first primary color luminescent patterned layer and the second primary color luminescent patterned layer, and a second electrode disposed on the third primary color luminescent and electron transport layer.
    Type: Application
    Filed: December 10, 2007
    Publication date: October 23, 2008
    Inventors: Ying-Ju Su, Chen-Ping Yu
  • Publication number: 20080252211
    Abstract: An EL lamp includes a substrate, which is transparent in at least a light-emitting region and an electrode assembly with a transparent electrode layer and a back electrode layer, which face each other in the light-emitting region. A phosphorescent layer and a dielectric layer are arranged between the transparent electrode layer and the back electrode layer. A first connection line is provided for connecting the transparent electrode to a driver circuit and a second connection line is provided for connecting the back electrode to a driver circuit. According to an important aspect of the invention, the EL lamp comprises an insulating layer for insulating the second connection line at least locally from the back electrode and/or, if the transparent electrode extends into a peripheral region of the EL lamp, for insulating the second connection line from the transparent electrode.
    Type: Application
    Filed: March 21, 2006
    Publication date: October 16, 2008
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Antonio Brunacci, Cecile Jouanique-Dubuis, Serge Kater
  • 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: 20080248240
    Abstract: Aspects of the invention include electroluminescent devices and methods for making the same. In certain embodiments, the devices include a substrate, a hole-injection electrode layer, a dielectric layer, an electroluminescent layer, an electron-injection electrode layer, and a cavity. In certain embodiments, the hole-injection electrode layer is positioned above the substrate, the dielectric layer is positioned above the hole-injection layer, and the electron-injection electrode layer is positioned above the dielectric layer. In certain embodiments, this order is reversed. In certain embodiments, the cavity extends through at least the dielectric layer and/or may extend through one or more of the electrode layers (e.g., the hole-injection and/or electron-injection electrode layer). In certain embodiments, the electroluminescent layer is positioned in the cavity and is in contact with the hole-injection electrode layer, the dielectric layer, and the electron-injection electrode layer.
    Type: Application
    Filed: September 11, 2007
    Publication date: October 9, 2008
    Inventor: Yijian Shi
  • Publication number: 20080248191
    Abstract: A method for making a light active device, including providing a mixture of light active material and a monomer in a first region and a second region. The light active material includes a plurality of electro-statically active microcapsules each comprising OLED material encapsulated within a polymer shell. Chains of the electro-statically active microcapsules are formed in the first region. The monomer is cured to form a polymer in the first region and in the second region to lock the chains of the electro-statically active microcapsules in the first region.
    Type: Application
    Filed: March 17, 2008
    Publication date: October 9, 2008
    Applicant: ARTICULATED TECHNOLOGIES, LLC
    Inventor: John J. Daniels