Patents Examined by Kenneth J. Ramsey
  • Patent number: 6733355
    Abstract: The present invention provides a method for manufacturing a triode field emission display (FED) that can accommodate a large screen size and that has holes that are minutely and uniformly formed.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: May 11, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seong-Yeon Hwang, Sang-Jin Lee, Jong-Min Kim
  • Patent number: 6729922
    Abstract: A light-emitting device is produced at a decreased cost by inspecting defects in the pixels in the step of fabrication. TFTs possessed by the pixels on the element substrate and TFTs possessed by the peripheral drive circuits are inspected by using the inspection device to detect defects in a step in a process for finishing the light-emitting device. This makes it possible to decrease the loss that results when the defective products are processed through up to the final step, and to improve the yield by repairing the defective products in a step of repairing.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: May 4, 2004
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Masaaki Hiroki
  • Patent number: 6729927
    Abstract: A method for making a shadow mask array is taught. Producing a plurality of shadow mask sections; inspecting the plurality of shadow mask sections to determine which shadow mask sections are acceptable as meeting predetermined criteria; positioning a predetermined number of the acceptable mask sections into predetermined locations relative to one another to form a mask section array thereby distributing any error in individual mask sections across the mask section array; and attaching the individual mask sections of the mask section array to a support structure. The support structure allows for expansion and/or contraction of the individual mask sections of the mask section array while maintaining relative positioning of the individual shadow mask section in the shadow mask array.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: May 4, 2004
    Assignee: Eastman Kodak Company
    Inventors: Joseph E. Stagnitto, Thomas W. Palone, Camiel J. Raes, James A. White, Joseph Yokajty, Gopalan Rajeswaran
  • Patent number: 6729928
    Abstract: A method and structure are provided for simultaneously fabricating polysilicon cones for a field emitter and a porous insulating oxide layer for supporting a gate material. The porous insulating oxide is fabricated by first making the polysilicon porous in the field regions by an anodic etch and then oxidation. This is a fully self-aligned process and only one masking is used. Shaping of the gate material in close proximity to the top of the cone is achieved by a lift-off technique and requires no special deposition techniques like depositions at a grazing incidence to improve the emitter.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: May 4, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Leonard Forbes, Kie Y. Ahn
  • Patent number: 6729924
    Abstract: An electrophoretic display device is provided with an improved display quality by distributing an electrophoretic liquid mixture containing electrophoretic particles to respective pixels in substantially equal amounts, thereby obviating a display density fluctuation due to a difference in distributed amount of the electrophoretic particles at the respective pixels. The equal distribution is performed through a process including the use of a temporary adsorbing member carrying the electrophoretic particles in an electrostatically adsorbed form in a pattern corresponding to an arrangement pattern, followed by transfer of the electrophoretic particles to the respective pixels, or a process including distribution of a distribution liquid containing the electrophoretic particles to the respective pixels followed by a step of adding the dispersion liquid.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: May 4, 2004
    Inventors: Tsutomu Ikeda, Masahiro Nakanishi
  • Patent number: 6726520
    Abstract: This invention provides an electron source manufacturing apparatus which can be easily downsized and operated. The electron source manufacturing apparatus includes a support member for supporting a substrate (10) having a conductor (11), a vessel (12) which has a gas inlet port (15) and a gas exhaust port (16) and covers a partial region of the surface of the substrate (10); a gas inlet unit (24) connected to the gas inlet port (15) to introduce gas into the vessel, an exhaust unit (26) connected to the gas exhaust port to evacuate the interior of the vessel, and a voltage application unit (32) for applying a voltage to the conductor.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: April 27, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiko Takeda, Masaru Kamio, Masataka Yamashita, Yasue Sato, Hitoshi Oda, Keisuke Yamamoto, Miki Tamura, Hideshi Kawasaki, Kazuhiro Jindai
  • Patent number: 6726519
    Abstract: The object of the present invention is to provide a phosphor ink applying device that can apply phosphor ink in a plurality of lines to an intricately-shaped surface of a back panel of a PDP while preventing phosphor colors mixing. A valve is provided for the aperture of each nozzle of the phosphor ink applying device and the opening and closing of each valve is controlled according to the shape of the portion of the surface to which ink is to be applied. In this way, mixing of colors can be prevented on an intricately-shaped back panel such as that with auxiliary barrier ribs.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: April 27, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Suzuki, Hiroyuki Kawamura, Keisuke Sumida, Nobuyuki Kirihara
  • Patent number: 6726518
    Abstract: A method for making an electrode structure and an electrode structure for a display device comprising a gate electrode proximate to an emitter and a focusing electrode separated from the gate electrode by an insulating layer containing a ridge. When the focusing electrode is an aperture-type electrode, the upper surface of the ridge protrudes closer to the emitter than the sidewall of the gate electrode or the sidewall of the focusing electrode. When the focusing electrode is a concentric-type electrode, the ridge protrudes above the upper surface of the gate electrode or the upper surface of the focusing electrode.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: April 27, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Benham Moradi, Zhong-Yi Xia, Tianhong Zhang
  • Patent number: 6726517
    Abstract: The object of the present invention is to form the fine structure on a cathode surface homogeneously and reproducibly to realize the increased emission current value and stability with a simple process in the electron emission element forming process. An electron emission part of an electron emission element that is a crystalline thin film of electron emissive material formed in self-aligning fashion by means of a laser ablation process, in which a laser beam is irradiated onto a target material and the material ejected and emitted from the target material is deposited to form a thin film on a substrate facing to the target, is used as the thin film electron source. The above-mentioned structure is effective to realize the low electron emission threshold value and the increased emission current value and stability, and realize the reduced cost with the structure that is simpler than the conventional structure.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: April 27, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuka Yamada, Takehito Yoshida, Nobuyasu Suzuki, Toshiharu Makino, Yoshikazu Hori
  • Patent number: 6722937
    Abstract: A flat-panel display is hermetically sealed by a process in which a first plate structure (30) is positioned generally opposite a second plate structure (32) such that sealing material (34) provided over the second plate structure lies between the plate structures. In a gravitational sealing technique, the first plate structure is positioned vertically below the second plate structure. The sealing material is heated so that it moves vertically downward under gravitational influence to meet the first plate structure and seal the plate structures together. In a global-heating gap-jumping technique, the plate structures and sealing material are globally heated to cause the sealing material to jump a gap between the sealing material and the first plate structure. When the first plate structure is positioned vertically above the second plate structure, the sealing material moves vertically upward to meet the first plate structure and close the gap.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: April 20, 2004
    Assignees: Candescent Technologies Corporation, Candescent Intellectual Property Services, Inc., Sony Corporation
    Inventors: Paul N. Ludwig, Theodore S. Fahlen, Shinji Kanagawa, Jennifer Y. Sun
  • Patent number: 6722936
    Abstract: The invention relates to a method for producing a field emission display (FED) that includes a first substrate with electrodes of an anode structure and a luminescent material that at least partly covers these electrodes. The electrodes of a cathode structure are affixed on a second substrate and include field emitters. The anode structure and the cathode structure are aligned with one another and interconnected in spaced-apart disposition in a gas-tight manner along their lateral edges, except for a gas inlet opening and a gas outlet opening. The field emitters are deposited by heating only the electrodes of the cathode structure while flowing a carrier gas through the gas inlet opening and the gas outlet opening.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: April 20, 2004
    Assignee: Electrovac, Fabrikation elektrotechnischer Spezialartikel Gesellschaft m.b.H.
    Inventor: Ernst Hammel
  • Patent number: 6719600
    Abstract: A mercury capsule for use in a fluorescent lamp comprises a shell defining a chamber and a bore extending through the shell. A body of mercury is disposed in the chamber. A plug is disposed in the bore to seal the bore. The plug exhibits a melting point reached in manufacture of the fluorescent lamp, to melt from the bore to open an exit passageway for the mercury. A method for making the capsule is provided.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: April 13, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Mark W. Grossman, William A. George, William J. Roche
  • Patent number: 6719602
    Abstract: A nanotube length control method involving a nanotube and a discharge needle so that the nanotube with its base end portion fastened to a holder and its tip end portion caused to protrude is set so as for its tip end to face the tip end of the discharge needle. A voltage is applied across the nanotube and the discharge needle so that an electrical discharge is caused to occur between the tip end of the nanotube and the tip end of the discharge needle, thus cutting down the tip end of the nanotube by this discharge, and it is possible to control the length of the tip end portion of the nanotube.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: April 13, 2004
    Assignees: Daiken Chemical Co., Ltd.
    Inventors: Yoshikazu Nakayama, Seiji Akita, Akio Harada
  • Patent number: 6720720
    Abstract: A color selection electrode and a method of producing the same, for a high definition cathode ray tube with a finer pitch of mask apertures free from limitations due to the thickness of the iron-alloy plate of the mask.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: April 13, 2004
    Assignee: Sony Corporation
    Inventor: Shinzo Takei
  • Patent number: 6719601
    Abstract: A fluorescent lamp capable of fully securing a portion for containing a mercury amalgam pellet and reliably preventing the mercury amalgam pellet from moving toward the inside a discharge tube, and a method for manufacturing the fluorescent lamp. The fluorescent lamp includes a glass tube having a fluorescent substance layer on the inner surface, a sealed portion formed at an end of the glass tube, a slender glass tube having an inner space that is in communication with the inside of the glass tube and is not in communication with the outside of the glass tube, and a mercury amalgam pellet contained in the slender glass tube. The slender glass tube has a small-diameter part with an inner diameter smaller than the diameter of the mercury amalgam pellet and a large-diameter part with an inner diameter larger than the diameter of the mercury amalgam pellet.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: April 13, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshiyoshi Oga, Noriyuki Uchida, Nobuyuki Tsubakihara
  • Patent number: 6716077
    Abstract: A preferred embodiment of the invention is directed to support structures such as spacers used to provide a uniform distance between two layers of a device. In accordance with a preferred embodiment, the spacers may be formed utilizing flow-fill deposition of a wet film in the form of a percursor such as silicon dioxide. Formation of spacers in this manner provides a homogenous amorphous support structure that may be used to provide necessary spacing between layers of a device such as a flat panel display.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: April 6, 2004
    Assignee: Micron Technology, Inc.
    Inventor: Brian A. Vaartstra
  • Patent number: 6716080
    Abstract: A process is disclosed for anodically bonding an array of spacer columns to one of the inner major faces on one of the generally planar plates of an evacuated, flat-panel video display. The process also includes an evacuated flat-panel display having spacer structures which are anodically bonded to an internal major face of the display, as well as a face plate assembly manufactured by the aforestated process.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: April 6, 2004
    Assignee: Micron Technology, Inc.
    Inventors: James J. Hoffman, Jason B. Elledge, Zhong-Yi Xia, David A. Cathey
  • Patent number: 6717356
    Abstract: An organic electroluminescent device and a method for fabricating the same are disclosed, the method including the steps of (1) forming a plurality of first electrode stripes on a transparent substrate at fixed intervals, (2) forming an array of partition walls made of an electrically insulating material on the first electrode elements; having a trapezoidal structure with the lower side wider than the upper side, (3) forming an organic electroluminescent multilayer, the second electrode, and the first protection layer in succession on the entire surface including on top of the partition walls, (4) removing upper portions of films, unequivocally including the second electrode layer on top of the partition walls, whereby electrically isolating any two adjacent pixels, and (5) forming the second protection layer on top of the etched-out surface, whereby simplifying fabrication processes, improving product yield and reducing product cost.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: April 6, 2004
    Assignee: LG Electronics Inc.
    Inventor: Sung Tae Kim
  • Patent number: 6716081
    Abstract: A multi-layered structure, and method for producing same, which may include at least one glass layer anodically bonded to an intermediate layer. The intermediate layer may function as an anodic bonding layer, an etch stop layer, and/or a hard mask layer. A template may be formed of the multi-layered structure by forming a desired pattern of openings therein by way of, for example, etching. Such a template may, for example, be used in the alignment and adherence of spacer structures to an electrode plate during the fabrication of flat panel displays. When used in this context, the construction of such a template results in more precise control of the patterning and sizing of the holes formed therein which thereby allows for more precise placement of spacer structures as well as the use of spacer structures exhibiting relatively higher aspect ratios during the fabrication of flat panel displays.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: April 6, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Won-Joo Kim, Robert J. Hanson, David H. Chun, Gary A. Evans, Seungwoo Lee, Jim J. Browning
  • Patent number: 6716078
    Abstract: A field emission display (30) having an anode plate (10) that has phosphor channels (13, 14, 15). The phosphor channels (13, 14, 15) are formed by depositing a first layer of photosensitive film (58) on a substrate (11). Stripes are patterned into the first layer photosensitive film (58) using ultraviolet light. A second layer of photosensitive film (59) is formed on the first layer of photosensitive film (58). Stripes are patterned into the second layer of photosensitive film (59) using ultraviolet light. The stripes in the second layer of photosensitive film (58) are substantially perpendicular to the first layer of photosensitive film (59). Both layers of photosensitive film are developed to form channel structures. Phosphor is formed in the channel structures to form the phosphor channels (13, 14, 15). The anode plate (10) is coupled to a cathode plate (31) to form the field emission display (30).
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: April 6, 2004
    Assignee: Motorola Inc.
    Inventors: Matthew Stainer, Shawn M. O'Rourke, Kazuo Kato, Susumu Sakamoto