Patents Examined by Glenn D. Zimmerman
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Patent number: 6917158Abstract: An organic light-emitting diode is described in which the anode comprises midfrequency magnetron sputtered aluminum-doped zinc oxide to increase the device stability and to decrease the material cost. Due the novel deposition technique, ZnO:Al film with ITO-like electrical conductivity can be deposited and improved device performance, especially the long-term stability can be obtained which are attributed to the modification of the ZnO:Al conductivity and surface chemistry.Type: GrantFiled: March 8, 2002Date of Patent: July 12, 2005Assignee: City University of Hong KongInventors: Shuit-Tong Lee, Xin Jiang, Chun-Sing Lee, Fu-Lung Wong
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Patent number: 6909226Abstract: An insulator (2) is inserted into a metallic shell (1) in the direction of an axis O, and a sealing material powder (160) is charged into a circumferential gap (20) formed between the inner circumferential surface of a rear end portion of the metallic shell (1) and the outer circumferential surface of the insulator (2). The compressed sealing-material-powder layer (61) contains talc in an amount of from 75% to 99.7% by mass and at least one of magnesite and dolomite in an amount of from 0.3% to 25% by mass, and satisfies 0.5?M?1.3 and 0.5?L?2×(M×4.5), wherein L in mm represents height as measured in the direction of the axis O, and M in mm represents thickness as measured radially with respect to the axis O.Type: GrantFiled: February 26, 2003Date of Patent: June 21, 2005Assignee: NGK Spark Plug Co., Ltd.Inventor: Akira Suzuki
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Patent number: 6882109Abstract: The reliability of the airtight sealed section is improved by providing a metallic or ceramic insertion member at a portion positioned between an electricity introducing member and a narrow tube in the airtight sealed section. The difference between the inner diameter of the narrow tube and the outer diameter of the insertion member is made 0.02 to 0.6 mm. The electricity introducing member is constructed by a halogen-resistant first member and a second member whose coefficient of linear expansion is similar to that of the narrow tube, and the junction of the first member and second member is covered with a halogen-resistant glass sealant. The difference between the insertion length of the second member into the narrow tube and the flow-in length of the glass sealant into the narrow tube is made 1 mm or more.Type: GrantFiled: March 8, 2001Date of Patent: April 19, 2005Assignee: Japan Storage Battery Co., Ltd.Inventors: Kuniaki Nakano, Jiro Honda, Shigeyuki Mori, Yasaburo Takeji, Shinji Taniguchi
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Patent number: 6879091Abstract: An electron emissive composition comprises a barium tantalate composition in an amount of about 50 to about 95 wt %; and a ferroelectric oxide composition in an amount of about 5 to about 50 wt %, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition in an amount of about 50 to about 95 wt % with a ferroelectric oxide composition in an amount of about 5 to about 50 wt % to form an electron emissive precursor composition, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition; and sintering the composition at a temperature of about 1000° C. to about 1700° C.Type: GrantFiled: May 30, 2003Date of Patent: April 12, 2005Assignee: General Electric CompanyInventors: Shankar Madras Venugopal, Alok M. Srivastava, Holly Ann Comanzo, Vikas Midha, William Winder Beers, Gopi Chandran Ramachandran, Mukunda Srinivas Adyam
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Patent number: 6861792Abstract: A variable pitch color selection mask for configured for an image display apparatus. A substrate having phosphor-based red, green, and blue subpixels is covered by a refraction layer. The color selection mask layer is printed onto the refraction layer, with the mask layer being configured to shield the blue and green subpixels from a first beam, shield the red and green subpixels from a second beam, and shield the red and blue subpixels from a third beam.Type: GrantFiled: April 1, 2002Date of Patent: March 1, 2005Assignees: Sony Corporation, Sony Electronics, Inc.Inventor: Ben Russ
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Patent number: 6856087Abstract: A full-color display device is disclosed. The present invention comprises a plurality of pixel units each comprising a base, a plurality of transparent conductive substrates, a plurality of light emitting elements, and a plurality of electrode parts. The base has at least three openings formed thereon, the bottom of each opening is a reflective surface, and each of the transparent conductive substrates individually covers each opening. Each of the light emitting elements is individually disposed on one side of each transparent conductive substrate and held in each opening. Each of the electrode parts is formed on the base and electrically connected to the electrodes of the light emitting elements and the transparent conductive substrates.Type: GrantFiled: January 6, 2003Date of Patent: February 15, 2005Assignee: Highlink Technology CorporationInventors: Ming-Der Lin, Kwang-Ru Wang, Shih-Cheng Huang, Ming-Fa Yeh, Yi-Tai Chung
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Patent number: 6836069Abstract: An organic electroluminescence (EL) display unit includes a plurality of pixels formed on a glass substrate and each including a TFT area and a luminescence area. An edge cover film covers the TFT area and exposes the luminescence area through a window formed in the edge cover film. The edge of the edge cover film adjacent to the window has a taper angle equal to or smaller than 30 degrees. This taper angle is obtained by a post-baking treatment in addition to a step alleviating film formed in the luminescence area to underlie the organic EL element.Type: GrantFiled: February 11, 2003Date of Patent: December 28, 2004Assignee: Samsung SDI Co., Ltd.Inventor: Daisuke Iga
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Patent number: 6833673Abstract: A plasma display panel is provided which has a novel cell structure excelling in light emission efficiency. Each display electrode arranged on a first substrate making a substrate pair is formed in a manner to have a three-dimensional structure including an elongated power supplying portion stretching over plural cells aligned in one direction, and discharge portions protruding from the power supplying portion in the direction of electrode arrangement for each cell so as to be close to a second substrate.Type: GrantFiled: January 3, 2003Date of Patent: December 21, 2004Assignee: Fujitsu LimitedInventors: Osamu Toyoda, Motonari Kifune, Kazunori Inoue
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Patent number: 6820993Abstract: The planar light emitting mechanism comprises a rectangular light guiding plate and a lamp. The lamp is disposed on a side of the light guiding plate, having a brighter effective emitting area and two curved darker emitting areas. The darker emitting areas are adjacent to the corners of the rectangular light guiding plate, wherein the brighter effective emitting area is between the darker emitting areas.Type: GrantFiled: August 20, 2003Date of Patent: November 23, 2004Assignee: Toppoly Optoelectronics Corp.Inventors: Ching-Huang Lin, Hua-Nan Huang
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Patent number: 6819040Abstract: A composition and method of forming an internal neutral density filter on a luminescent screen assembly of a cathode ray tube (CRT) is disclosed. The luminescent screen assembly is formed on an interior surface of a glass faceplate panel of the CRT tube. The luminescent screen assembly includes a patterned light-absorbing matrix that defines three sets of fields corresponding to one of a blue region, a green region and a red region. An internal neutral density filter is formed on the light-absorbing matrix. An array of blue, green and red color phosphors is formed on the internal neutral density filter corresponding to one of the blue region, the green region and the red region defined in the light-absorbing matrix. The internal neutral density filter has a composition including a red pigment, a blue pigment and at least one non-pigmented oxide particle.Type: GrantFiled: February 27, 2003Date of Patent: November 16, 2004Assignee: Thomson Licensing S. A.Inventors: Farzad Parsapour, Bhanumurthy Venkatrama Subrahmanya Gunturi, Steven Anthony Colbert, Brian Thomas Collins
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Patent number: 6805603Abstract: A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.Type: GrantFiled: August 5, 2002Date of Patent: October 19, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tatsuya Kawamura, Toshizo Kobayashi, Hiroshi Enami, Yoshiharu Nishiura, Takaharu Yanata
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Patent number: 6777869Abstract: A transparent emissive display is created using a transparent anode and a transparent cathode so that images can be viewed from both sides of the field emission display panel. When the phosphor material emits the image, it can pass through the field emission material, if such a material is effectively made transparent by the manner in which it is deposited. The cathode conducting layer and the cathode substrate are thus also made transparent. Alternatively, multiple displays can be stacked together.Type: GrantFiled: April 9, 2003Date of Patent: August 17, 2004Assignee: SI Diamond Technology, Inc.Inventor: Igor Pavlovsky
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Patent number: 6759802Abstract: An image forming apparatus comprises first and second substrates, a support frame arranged between the first and second substrates, and surrounding a space between the first and second substrates, electron emitting devices arranged on the first substrate facing the space, and an image forming member arranged on the second substrate. A spacer is disposed in the space between the first and second substrates, and a conductive film is arranged on the second substrate to surround the image forming member. The conductive film is supplied with a potential lower than that applied to the image forming member, and the spacer has a length greater than that of the image forming member. Each longitudinal end of the spacer is arranged between the inner periphery of the support frame and a respective plane through which a corresponding end of the conductive film extends perpendicularly to a principal surface of the second substrate.Type: GrantFiled: December 28, 2000Date of Patent: July 6, 2004Assignee: Canon Kabushiki KaishaInventor: Yoichi Ando
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Patent number: 6727642Abstract: Disclosed are flat panel field emitter displays whose unit cell structure adopt a planar cathode structure in stead of a conventional microtip structure, so as to increase the degree of integration and can be operated at low operation voltages at high speeds. In the structure, a channel insulator is formed below the cathode and underlaid by a gate. By means of the gate voltage, the electron emission from the cathode can be controlled. The electrodes in the structure are arranged in the order of anode, cathode and gate, allowing the simplification of processes. With the ease of controlling the distance between electrodes, the displays can be applied for almost all video systems from small sizes to large screen area displays, in place of conventional displays. The displays allows conventional semiconductor processes and facilities to be utilized as they are.Type: GrantFiled: September 20, 2000Date of Patent: April 27, 2004Assignee: Korea Advanced Institute of Science & TechnologyInventors: Gyu Hyeong Cho, Nam Sung Jung, Gyun Chae, Tae Ha Ryoo, Jon Woon Hong, Seung Tak Ryu, Young Ki Kim
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Patent number: 6727644Abstract: Disclosed are organic electroluminescent devices comprising a substrate, an anode and a cathode disposed over the substrate, an emission layer (EML) disposed between the anode and the cathode, a hole-transport layer (HTL) disposed between the anode and the emission layer, and an electron-transport layer (ETL) disposed between the cathode and the emission layer. The EML and either the HTL, the ETL, or both the HTL and the ETL include a derivative of anthracene as a color-neutral dopant. A color-neutral dopant is a dopant whose presence does not alter the electroluminescent color of the device.Type: GrantFiled: August 6, 2001Date of Patent: April 27, 2004Assignee: Eastman Kodak CompanyInventors: Tukaram K. Hatwar, Ralph H. Young
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Patent number: 6713951Abstract: A shadow mask is formed by press molding and includes a substantially rectangular mask effective portion in the form of a gently sloped dome having electron beam passage apertures and a skirt portion extending from the peripheral edge of the mask effective portion. The skirt portion has a plurality of apertures arranged parallel to the peripheral edge of the mask effective portion and spaced from one another and belt portions formed between the apertures and an extending end edge of the skirt portion and extending along the extending end edge. Each of the apertures is formed so that its width increases from the peripheral edge of the mask effective portion toward the extending end edge side of the skirt portion.Type: GrantFiled: February 26, 2002Date of Patent: March 30, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Hisakazu Okamoto, Tetsuya Masumura
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Patent number: 6690106Abstract: A color cathode ray tube is constituted of a glass bulb which includes a panel portion having a faceplate portion with a phosphor screen on an inner surface thereof, a neck portion in which an electron gun is mounted, and a funnel portion which connects the panel portion and the neck portion. Assuming a thickness of a screen effective area of the faceplate portion along the tube axis direction as tc at a central section thereof, as tx at a peripheral section thereof along the major axis direction, and as td at a peripheral section thereof along the diagonal direction, the cathode ray tube has the relationship tc>td>tx.Type: GrantFiled: October 26, 2001Date of Patent: February 10, 2004Assignee: Hitachi, Ltd.Inventors: Haruhiko Yoshida, Nobuhiko Hosotani, Mitsuru Watanabe, Hiroshi Itou
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Patent number: 6680571Abstract: A device and a method are disclosed for introducing into the fluorescent lamps small amounts of mercury. The device is formed of a metallic container which is capable of containing powders of one or more compounds having the general formula TixZryHgz, but is not hermetically sealed, in order to allow the discharge of mercury vapors generated by the decomposition of such compounds. Some possible device geometries are disclosed, as well as some possible arrangements of the same inside lamps. Finally a method is disclosed for introducing mercury into a lamp by means of a device of the invention, without the device remaining in the resulting lamp.Type: GrantFiled: November 17, 1999Date of Patent: January 20, 2004Assignee: SAES Getters S.p.A.Inventors: Stefano Paolo Giorgi, Mario Borghi
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Patent number: 6674227Abstract: There is provided an electron gun for a cathode-ray tube, comprising a triode having a control electrode and an accelerating electrode for controlling the amount of electron beams emitted from a plurality of cathodes and accelerating the electron beams, a front focusing lens part configured of a plurality of electrodes focusing and accelerating a predetermined amount of the electron beams, and a main lens part configured of a plurality of electrodes for focusing the electron beams on a screen, in which the diameter of beam passage hole of the accelerating electrode of the triode corresponds to 140-220% of that of the control electrode. The thickness of the control electrode corresponds to 20-30% of the diameter of beam passage hole of the control electrode, and the distance between the control electrode and the accelerating electrode corresponds to 40-80% of the beam passage hole diameter of the control electrode.Type: GrantFiled: June 12, 2001Date of Patent: January 6, 2004Assignee: LG Electronics Inc.Inventors: Tae-Kyu Kim, Hyun-Cheol Kim
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Patent number: 6670746Abstract: The present invention relates to a cathode ray tube (CRT) having an improved electrical connector. An electrical connector is provided for detachably coupling an electrical lead to the electron gun through the neck of the CRT. The connector has a through passage defined by a diameter greater than the diameter of the neck. The neck is inserted in the passage and the connector is secured to the outer surface of the neck. Adjacent the passage is a plurality of integral resilient leaf springs extending toward the stem at a plurality of circumferentially spaced locations. The leaf spring elements include base elements for terminal engagement and tip ends projecting and bias toward the electrical leads of the electron gun to provide electrical connection to the cathode ray tube. The passage of the connector is preferably defined by an opening in a printed circuit board or other electrical terminal contact from which the leaf springs extend.Type: GrantFiled: December 12, 2001Date of Patent: December 30, 2003Assignee: Thomson Licensing S.A.Inventor: Istvan Gorog