Patents Examined by Natalie K. Walford
  • Patent number: 7598669
    Abstract: Provided is a light emitting diode and method for fabricating the same, and a display device using the same, wherein the light emitting diode at least comprises a high refractive index layer on a light transmissive substrate; and an organic electroluminescence (EL) element formed of one organic thin layer or a plurality of organic thin layers interposed between a transparent first electrode and a second electrode formed on the high refractive index layer, and the high refractive index layer has a refractive index higher than that of an emitting layer or has a refractive index of 1.65 or more, and an interface between the high refractive index layer and the light transmissive substrate is roughed to have its center line average roughness in a range of 0.01 ?m to 0.6 ?m so that light leakage is be prevented and light extraction efficiency becomes higher.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: October 6, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Satoru Toguchi, Hitoshi Ishikawa, Atsushi Oda
  • Patent number: 7598668
    Abstract: An organic semiconductor device includes organic semiconductor layers (3, 4) and an electron injecting electrode (5) which is composed of MgAu alloy and injects electrons into the organic semiconductor layers (3, 4). The MgAu alloy forming the electron injecting electrode (5) may contain not more than 85 atom % of Au. The organic semiconductor device may further include a hole injecting electrode (2) for injecting holes into the organic semiconductor layers (3, 4). The electron injecting electrode and the hole injecting electrode are arranged apart from each other in such a manner that they fit to each other. The organic semiconductor device may further include a gate electrode which is arranged opposite, via an insulating film, to the region between the electron injecting electrode and the hole injecting electrode.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: October 6, 2009
    Assignees: Kyoto University, Pioneer Corporation, Hitachi, Ltd., Mitsubishi Chemical Corporation, Rohm Co., Ltd.
    Inventors: Takahito Oyamada, Chihaya Adachi
  • Patent number: 7594841
    Abstract: A method for fabricating a carbon nanotube field emitter array is disclosed, which has the steps of (a) providing a substrate; (b) forming a cathode layer having a first pattern on the substrate; (c) forming an opaque insulating layer having a second pattern on the substrate, wherein a predetermined part of the cathode layer is exposed; (d) forming a gate layer having the second pattern on the opaque insulating layer; (e) forming a carbon nanotube layer on the entire top surface of the substrate; and (f) exposing the carbon nanotube layer to a light beam coming from the backside of the substrate.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: September 29, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Jyh-Rong Sheu, Ching-Hsun Chao, Liang-You Jiang, Yu-Yang Chang, Cheng-Chung Lee
  • Patent number: 7586257
    Abstract: A green pixel is provided with an organic EL element having an emissive layer which emits green light, but is not provided with a color filter. On the other hand, red and blue pixels comprise organic EL elements having an emissive layer which emits white light. The white emissive layer is composed of a lamination of an orange organic emissive layer and a blue organic emissive layer. The red and blue pixels are further provided with red and blue color filters, respectively, to limit the emitted white light to those colors.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: September 8, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Patent number: 7582000
    Abstract: A method of making an electroluminescent (EL) light which includes at least one design. A flexible EL lamp is used which has a front electrode, a phosphor layer, a dielectric layer and a rear electrode layer. A pattern is cut out from the flexible EL lamp and at least one line is determined on the cut out to divide the design into at least two geometric areas, which are preferably of approximately equal size. A scribe line is cut into the rear electrode along such line, which forms split electrode areas in the rear electrode. Connecting devices are attached to each split electrode area, which are adapted to be connected to a power source. A method of making an EL light that is adaptable to be inserted into a channel, with the light having at least one indicia such as a letter, number, symbol or the like. A first form of the desired indicia is cut out from a plastic backing sheet. A second form of the desired indicia is cut out from flexible EL lamp of the form mentioned above.
    Type: Grant
    Filed: January 7, 2006
    Date of Patent: September 1, 2009
    Assignee: Electro-Luminx Lighting Corporation
    Inventors: Steven Paul Pendlebury, Robert Joseph Ponticelli, Sr.
  • Patent number: 7576486
    Abstract: An organic electroluminescent device including a pair of electrodes, and at least two organic emitting layers held between the pair of electrodes, (1) two organic emitting layers being arranged with an electron barrier layer interposed therebetween, (2) the two organic emitting layers both including an electron-transporting emitting material.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: August 18, 2009
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Masahide Matsuura, Hiroshi Yamamoto, Hisayuki Kawamura, Chishio Hosokawa
  • Patent number: 7567025
    Abstract: Disclosed is a plasma display panel (PDP) apparatus having a film-type filter and a filter support structure for supporting and fixing the film-type filer to a panel of the PDP apparatus. The PDP apparatus includes a panel divided into a display region and a non-display region, and a film-type filter electrically connected to the non-display region of the panel via a ground layer or a grounding member. By such construction, the filter can be grounded and supported. The film-type filter has a main body part and a projected part which is provided in such a manner that at least one film among a plurality of films constituting the main body part are extended from an edge portion of the main body part. The projected part of the filter is electrically connected to a heat sink frame disposed on a rear side of the panel so that charges accumulated on the filter can be discharged out.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: July 28, 2009
    Assignee: LG Electronics Inc.
    Inventor: Yu Park
  • Patent number: 7554259
    Abstract: An apparatus is provided with a plurality of organic light emitting devices, each having an organic light emitting layer that synthesizes two or more colors of light that are complementary to each other thereby producing white light, and a resonant structure by which a resonant wavelength is set to a predetermined wavelength, and outputs the white light via the resonant structure. The apparatus further comprises a plurality of wavelength selection units on a path through which the white light is outputted, each wavelength selection unit transmitting only light of a particular wavelength included in the outputted white light, the predetermined wavelength substantially coinciding with a wavelength corresponding to a primary color whose luminous intensity is, if without the resonant structure, the lowest of three primary colors included in the produced white light to bring it close to white light ideal for an image display light source.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: June 30, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Noriyuki Matsusue
  • Patent number: 7550924
    Abstract: A high-pressure discharge lamp has an outer envelope (1) in which a discharge vessel (11) is arranged. The discharge vessel encloses a discharge space (13) with an ionizable filling. The discharge vessel has two mutually opposed neck-shaped portions (2,3) through which current supply conductors (4,5) extend to a pair of electrodes (6,7) in the discharge space. A lamp base (8) of electrically insulating material supports the discharge vessel. The lamp base also supports the outer envelope (1). The outer envelope encloses the current supply conductors and is connected to the lamp base in a gas-tight manner. By controlling the atmosphere in the outer envelope, a simplified and compact high-pressure discharge lamp is provided with an accurate positioning of the discharge vessel with respect to the optical axis of the lighting system. The high-pressure discharge lamp can be suitably applied in an assembly with a reflector.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: June 23, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Leo Gustaaf Joanna Emiel Marien, Willibrordus Hubertus Martinus Maria Van De Spijker, Nancy Jean Caruso, Jean-François Lavaud
  • Patent number: 7541734
    Abstract: It is an object of the present invention to provide a light-emitting device that is high in color purity of light and is high in light extraction efficiency, where sputtering is used to form an electrode on an electroluminescent layer without damage to a layer including an organic material.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: June 2, 2009
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Hisao Ikeda, Yasuo Nakamura, Keiko Saito
  • Patent number: 7537503
    Abstract: An electron beam apparatus in which a spacer having a high-resistance film coating a surface of a base material is inserted between a rear plate having electron emitting elements and row-direction wires, and a faceplate having a metal back. The row-direction wires and the metal back are electrically connected via the high-resistance film. An electric field near an electron emitting element near the spacer is maintained to substantially constant irrespective of the positional relationship between the spacer and the electron emitting element near the spacer. When a sheet resistance value of the high-resistance film on a first facing surface of the spacer that faces a row-direction wire is represented by R1, and a sheet resistance value of the high-resistance film on a side surface adjacent to the electron emitting element is represented by R2, R2/R1 is 10 to 200.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: May 26, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taro Hiroike, Koji Yamazaki, Yoichi Ando
  • Patent number: 7538485
    Abstract: An OLED display panel according to the present invention comprises: a substrate; a plurality of banks, each having a tapered shape of cross section in a traverse direction comprises by a pair of side surfaces, an upper surface and a bottom surface respectively connected to the side surfaces, the banks being arranged on a top surface of the substrate in side by side at an interval; and an electrode layer covering the top surface of the substrate between banks and the side surfaces of the banks adjacent to such top surface.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: May 26, 2009
    Assignees: Chi Mei Optoelectronics Corp., Kyocera Corporation
    Inventor: Koji Murayama
  • Patent number: 7534156
    Abstract: An organic light-emitting diode. The diode structure includes a substrate having edges, and a sealing layer formed on the edges thereof, wherein at least a breach is formed at a corner of the sealing layer. A method of fabricating the OLED is also disclosed.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: May 19, 2009
    Assignee: Au Optronics Corp.
    Inventor: Guo-Huei Sz
  • Patent number: 7531958
    Abstract: A semi-transmissive film is provided underneath a transparent electrode of an organic EL element. The optical length of the interval between the upper surface of the semi-transmissive film and the lower surface of a counter electrode serving as a reflective layer is configured such that this interval functions as a microresonator for selecting light having a specific wavelength. A color filter is provided underneath the semi-transmissive film to further restrict the wavelength of light which has passed through the semi-transmissive film.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: May 12, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Patent number: 7531961
    Abstract: Phosphor layers (110G, 110B, and 110R) are made of a combination of: blue and green phosphors that are positively charged on their surfaces and baked in an oxygen-nitrogen atmosphere to reduce oxygen vacancy, and that have a ?-alumina crystal structure; and a red phosphor made of an yttrium oxide compound. Uniformly forming such phosphor layers on the wall surfaces of barrier ribs (109) provides equal charge characteristics of the phosphors of respective colors, reduces oxygen vacancy in the phosphors, and inhibits adsorption of various gases in the panel production process. This can stabilize the discharge characteristics and prevent luminance degradation at driving the panel.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: May 12, 2009
    Assignee: Panasonic Corporation
    Inventors: Masaki Aoki, Hiroyuki Kawamura, Kazuhiko Sugimoto, Hiroshi Setoguchi, Junichi Hibino, Yoshinori Tanaka
  • Patent number: 7531957
    Abstract: A display apparatus including a substrate 22; an organic EL device including an electrode 24 which is formed on the substrate 22, an organic EL layer 26 which is formed on the electrode 24, and an electrode 30 which is formed on the organic EL layer 26; an inorganic insulating film 34 which is formed on the organic EL device, sealing the organic EL layer; and a substrate 38 which is formed on the inorganic insulating film 34, wherein the material and the thickness of the substrate 22 and the substrate 38 are set such that the neutral axis when a bending stress is applied is located in the vicinity of the interface between the inorganic insulating film 34 and the substrate 38. By configuring such a display apparatus, occurrence of cracks in the inorganic insulating film is prevented, and the organic EL device can be effectively protected against moisture and oxygen. As a result, the reliability of the display apparatus can be improved.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: May 12, 2009
    Assignee: FUJIFILM Corporation
    Inventor: Yoshiaki Sakamoto
  • Patent number: 7528543
    Abstract: A display device with increased lifespan is presented. The device includes a plurality of thin film transistors, a passivation layer formed on the thin film transistors, a plurality of pixel electrodes formed on the passivation layer and electrically connected to the thin film transistors, and a wall dividing the pixel electrodes. The wall has a main section and an auxiliary section that is lower than the main section. A caved-in section is disposed between the main section and the auxiliary section. An organic layer is formed on the pixel electrodes.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: May 5, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jianpu Wang, Joon-chul Goh, Dong-won Lee, Jung-soo Rhee, Song-mi Hong
  • Patent number: 7525252
    Abstract: The present invention is directed to the use of a molybdenum-rhenium alloy in the construction of sealing tubes for high pressure discharge lamps.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: April 28, 2009
    Assignee: General Electric Company
    Inventors: Luana E. Iorio, Bruce A. Knudsen, Bernard P. Bewlay, James S. Vartuli, Timothy J. Sommerer
  • Patent number: 7511407
    Abstract: An optical filter of a plasma display panel (PDP) and its fabrication method are disclosed. The optical filter includes an electromagnetic wave shield layer having a bias angle formed by cutting a mesh film along a predetermined direction.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: March 31, 2009
    Assignee: LG Electronics, Inc.
    Inventors: Myeong Soo Chang, Hong Rae Cha, Byung Gil Ryu, Kyung Ku Kim, Young Sung Kim
  • Patent number: 7508122
    Abstract: In a field emitter (100) including a substrate (110), the substrate (110) has a substantially non-conductive top substrate surface (112). A conductive cathode member (130) is disposed on the top substrate surface (112) and has a top cathode surface (132). A conductive gate member (120) is disposed on the top substrate surface (112) and is substantially coplanar with the cathode member (130). An emitter structure (140) extends away from the top cathode surface (132). The gate member (120) is spaced apart from the cathode member (130) at a distance so that when a predetermined potential is applied between the cathode member (130) and gate member (120), the emitter structure (140) will emit electrons.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: March 24, 2009
    Assignee: General Electric Company
    Inventor: William Hullinger Huber