Multiple Gaseous Discharge Display Panel Patents (Class 313/582)
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Patent number: 8125147Abstract: In a plasma display apparatus of the preset invention, a filter including an external light shielding sheet configured to shield externally incident light to the greatest extent possible is disposed at the front, thus effectively implementing a black image and improving the bright and dark room contrast. Furthermore, since the external light shielding sheet and an EMI shielding sheet are formed to be aligned, thereby sustaining the luminance of the screen.Type: GrantFiled: September 28, 2006Date of Patent: February 28, 2012Assignee: LG Electronics Inc.Inventors: Yu Park, Tae Deok Seo, Jun Hwan Ju, Hun Gun Park
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Patent number: 8125771Abstract: Disclosed herein is an electronic apparatus, including: a base chassis formed as a unitary member from a transparent material and having two faces positioned on the opposite sides to each other and individually formed as a first mounting face section and a second mounting face section; a display unit having a display panel thereon and attached to said first mounting face section of said base chassis; a control circuit board attached to said second mounting face section of said base chassis; and a rear cover attached to said second mounting face section of said base chassis and configured to cover said control circuit board.Type: GrantFiled: March 19, 2007Date of Patent: February 28, 2012Assignee: Sony CorporationInventors: Shuhei Yukawa, Masafumi Tanaka, Yutaka Ogasawara, Tooru Kuronuma
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Patent number: 8120253Abstract: A plasma display panel (PDP) with improved address voltage margin and reduced noise brightness such as discharge light or background light during an address discharge. The PDP includes a plurality of barrier ribs between a front substrate and a rear substrate to define a plurality of main discharge spaces and a plurality of auxiliary discharge spaces along a stepped surface of the barrier ribs. The auxiliary discharge spaces provide a shorter discharge path than the main discharge spaces. Address electrodes are provided on the rear substrate for generating address discharges together with the scan electrodes on the front substrate at locations adjacent to the auxiliary discharge spaces. Phosphor layers are respectively formed in the main discharge spaces, and a discharge gas is injected in the main discharge spaces and the auxiliary discharge spaces.Type: GrantFiled: November 20, 2008Date of Patent: February 21, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Mun-Ho Nam, Jun-Yong Park
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Patent number: 8120252Abstract: A plasma display panel (PDP) is disclosed. In one embodiment, the PDP includes i) a front substrate and a rear substrate spaced apart from and facing each other and ii) a barrier rib portion dividing a space between the front substrate and the rear substrate into a plurality of discharge cells, wherein the barrier rib portion comprises first barrier ribs and second barrier ribs formed on the first barrier ribs, wherein the second barrier ribs are less in width than the first barrier ribs, wherein the widths of the first and second barrier ribs are defined along a first direction substantially parallel with one of the front and rear substrates, and wherein the second barrier ribs are closer to the first substrate than the first barrier ribs.Type: GrantFiled: June 22, 2010Date of Patent: February 21, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Sung-Hee Cho, Jung-Min Kim
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Patent number: 8119027Abstract: A green phosphor represented by Formula (A1-xTbx)a(B1-yMny)bCcOb+1.5(a+c), wherein A includes La, and Yb and/or Gd, B includes at least one kind selected from Mg, Zn, Sc, V, Cr, Co, Ni, Cu, In, Zr, Nb, Ta, Mo, and Sn, C includes at least one selected from Al, B, Ga, Si, P, Ti, Fe, B, and Ge, 0?x?1, 0?y?1, 0.8?a?1.2, 0<b?1.5, 8?c?30, and having a magnetoplumbite type crystal structure.Type: GrantFiled: January 13, 2006Date of Patent: February 21, 2012Assignee: Hitachi Plasma Display LimitedInventors: Toshiaki Onimaru, Shinya Fukuta, Shigeo Kasahara
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Patent number: 8115387Abstract: A plasma display panel includes a first and a second plate facing each other via a discharge space. On the first plate, a first and a second bus electrode are provided which extend in a first direction and are disposed at intervals. In a cell, a first and a second display electrode are provided and coupled to the first and the second bus electrode respectively, and facing each other. In addition, on a dielectric layer covering the first and the second bus electrode and the first and the second display electrode, a plurality of address electrodes are provided which are disposed at respective positions facing first barrier ribs. Then, a protective layer is formed directly on the address electrodes and the dielectric layer, covering a surface of the dielectric layer and the address electrodes, and being exposed to the discharge space of the cell.Type: GrantFiled: March 30, 2007Date of Patent: February 14, 2012Assignee: Hitachi, Ltd.Inventors: Takashi Sasaki, Akira Otsuka
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Patent number: 8114312Abstract: A display device comprising at least one phosphor layer, the phosphor layer containing a green phosphor represented by the following formula: (A1-xBx) (Zn1-yMny) Al10O17 wherein, A is an element selected from Ca, Ba and Sr, B is a rare-earth element, x is a number satisfying 0.0001?x?0.1, and y is a number satisfying 0.02?y?0.14.Type: GrantFiled: February 28, 2005Date of Patent: February 14, 2012Assignee: Hitachi Plasma Patent Licensing Co., Ltd.Inventors: Toshiaki Onimaru, Shinya Fukuta, Tomonari Misawa, Hironori Sakata, Shigeo Kasahara
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Patent number: 8115388Abstract: There is provided a plasma display panel device using phosphors to improve reliability and color reproductivity or color performance. A plasma display panel includes: a discharge gas for generating ultraviolet light as a result of electric discharge, and a phosphor layer containing a phosphor for emitting light as a result of excitation by the ultraviolet light, in which the phosphor contains an Eu activated silicate phosphor added with at least one element selected from Al, Ga, Y and Gd, represented by the following General Formula (1): M13-yM2Si2O8:Euy??(1) wherein M1 is at least one element selected from the group consisting of Ba, Ca, and Sr; M2 is at least one element selected from the group consisting of Mg and Zn; and y satisfies the condition of 0.001?y?0.2.Type: GrantFiled: October 8, 2008Date of Patent: February 14, 2012Assignee: Hitachi, Ltd.Inventors: Hirotaka Sakuma, Hitoshi Oaku, Choichiro Okazaki, Shin Imamura, Masaaki Komatsu
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Patent number: 8113899Abstract: A method for producing a plasma display panel, the method comprising the steps of: (i) preparing a front panel and a rear panel, the front panel being a panel wherein an electrode A, a dielectric layer A and a protective layer are formed on a substrate A, and the rear panel being a panel wherein an electrode B, a dielectric layer B, a partition wall and a phosphor layer are formed on a substrate B; (ii) applying a glass frit material onto a peripheral region of the substrate A or B, and then opposing the front and rear panels with each other such that the glass frit material is interposed therebetween; (iii) supplying a gas into a space formed between the opposed front and rear panels from a direction lateral to the opposed front and rear panels, under such a condition that the front and rear panels are heated; and (iv) melting the glass frit material to cause the front and rear panels to be sealed.Type: GrantFiled: July 14, 2009Date of Patent: February 14, 2012Assignee: Panasonic CorporationInventors: Tomohiro Okumura, Ryuichi Murai, Takahiro Takisawa, Hiroyoshi Sekiguchi, Takayuki Ashida, Yoshihiro Sakaguchi
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Patent number: 8115703Abstract: A method for driving a plasma display panel is provided in which wasteful power consumption is reduced and light emission efficiency is improved when the number of cells to be lighted is relatively small. The method includes classifying a display ratio into plural group ranges, selecting a suitable display pulse waveform for each group range, detecting the display ratio of an object to be displayed in a real display, and plural types of display pulses having different waveforms are used differently in accordance with the result of the detection. The display ratio means a ratio of the number of cells to be lighted to the number of cells of the screen.Type: GrantFiled: July 5, 2011Date of Patent: February 14, 2012Assignees: Hitachi Plasma Patent Licensing Co., Ltd., Fujitsu Hitachi Plasma Display LimitedInventors: Naoki Itokawa, Yoshiho Seo, Yasunobu Hashimoto, Tetsuya Sakamoto, Tomokatsu Kishi
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Patent number: 8113898Abstract: Plasma-shells filled with ionizable gas are positioned on or within a rigid, flexible, or semi-flexible substrate. Each plasma-shell is electrically connected to one or more electrical conductors such as electrodes with an electrically conductive bonding substance to form an electrical connection to each electrode. The electrically conductive bonding substance may comprise a pad connected to the plasma-shell and/or an electrode. The bonding substance is made of a light reflective material that reflects photons to enhance light output from a plasma-shell.Type: GrantFiled: October 8, 2009Date of Patent: February 14, 2012Assignee: Imaging Systems Technology, Inc.Inventors: Daniel K. Wedding, Oliver M. Strbik, III, Carol Ann Wedding
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Patent number: 8110987Abstract: A gas discharge (plasma) display comprising gas filled microshells positioned on a substrate in electrical contact with two or more electrodes. Each microshell may contain a luminescent material.Type: GrantFiled: November 21, 2008Date of Patent: February 7, 2012Assignee: Imaging Systems Technology, Inc.Inventor: Carol Ann Wedding
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Publication number: 20120026434Abstract: A transflective display device of the present invention includes a backlight module, an electrophoretic device, and a liquid crystal panel. The electrophoretic device includes a first substrate; a second substrate; an electrophoretic layer; a collector; a gate electrode and a plurality of transparent electrodes. The first substrate has at least a pixel region, and a device region and a display region are defined in the pixel region. The first substrate is disposed oppositely to the second substrate, and the electrophoretic layer is disposed between the first substrate and the second substrate. The electrophoretic layer includes a transparent fluid and a plurality of opaque charged particles. The collector, the gate electrode, and the plurality of transparent electrodes are disposed between the first substrate and the second substrate, wherein the collector and the gate electrode are disposed in the device region and the transparent electrodes are disposed in the display region.Type: ApplicationFiled: January 4, 2011Publication date: February 2, 2012Inventor: Wen-Zheng Chen
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Patent number: 8106586Abstract: An AC or DC PDP containing a fluorescent conversion material (FCM) that produces IR when excited by a gas discharge. In one embodiment, the fluorescent conversion material is rare earth doped chalcogenide. The PDP may comprise a multiplicity of plasma-sells or plasma-tubes on a substrate, each plasma-shell or plasma-tube containing FCM.Type: GrantFiled: May 31, 2008Date of Patent: January 31, 2012Assignee: Imaging Systems Technology, Inc.Inventors: Carol Ann Wedding, Oliver M. Strbik, III, Edwin F. Peters, Thomas J. Pavliscak
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Patent number: 8102104Abstract: Provided is a front-side filter which can be easily attached to a cover of a display device, but is difficult to detach from the cover even after long term use and further provided is a PDP device including the same filter. The front-side filter includes a filter base having at least one function among a near-infrared ray shielding function, and a neon light shielding function, and an electromagnetic wave shielding function; and an antireflective layer with an edge pattern, formed on a side of the filter base in such a way that the entire edge portion or a part of the edge portion of the filter base is exposed through the edge pattern to provide a fixing means formed in the edge pattern.Type: GrantFiled: November 7, 2005Date of Patent: January 24, 2012Assignee: Samsung Corning Precision Materials Co., Ltd.Inventors: Dong-keun Sin, Eui-soo Kim, Nam-soo Kim, Jong-won Lee, Young-chae Cho
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Patent number: 8098012Abstract: A photosensitive composition, which has a cross-linking monomer having at least two ethylenic double bonds, a photopolymerization initiator, and an organic solvent, and a method of preparing a barrier rib for a plasma display panel, wherein the photosensitive composition is used. The photosensitive composition provides improved adherence to an inorganic material and an organic material.Type: GrantFiled: August 27, 2009Date of Patent: January 17, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Hyea-Weon Shin, Yon-Goo Park, Bong-Gi Kim, Chan-Seok Park, Sung-Mun Ryu
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Patent number: 8098013Abstract: A plasma display device includes: a front substrate and a back substrate facing each other and interposing a discharge gap; and a plurality of discharge cells formed by the front substrate and the back substrate, wherein a mixture gas containing Xe is filled in the discharge gap, and a red, green, or blue phosphor materials is arranged in each of the discharge cells. The plasma display device performs a reset operation by, at least, a weak discharge. A crystal material is arranged in the red, green, and blue phosphor materials so as to make weak discharge firing voltages for reset discharges in respective discharge cells uniform.Type: GrantFiled: July 14, 2009Date of Patent: January 17, 2012Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Norihiro Uemura, Shunichiro Nobuki, Naoya Tokoo, Masakazu Sagawa
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Patent number: 8093813Abstract: A plasma display panel enhancing an emission efficiency of a green phosphor layer by increasing an excitation efficiency of a green phosphor layer using visible light emitted from a dielectric layer or barrier ribs, the plasma display panel including a first substrate and a second substrate disposed to face the first substrate. A plurality of display electrodes are formed on the first substrate. A first dielectric layer is formed on the first substrate to cover the display electrodes. A plurality of address electrodes are formed on the second substrate in a direction crossing the display electrodes. A second dielectric layer is formed on the second substrate to cover the address electrodes. Barrier ribs are disposed in a space between the first dielectric layer and the second dielectric layer to form a plurality of discharge cells. The second dielectric layer and the barrier ribs comprise a short wavelength phosphor material.Type: GrantFiled: August 31, 2010Date of Patent: January 10, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Younggil Yoo, Bohoon Kim
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Patent number: 8093811Abstract: A technique for improving impact resistance performance of a panel is provided in a module or display apparatus with a flat display panel. In a PDP module, a filter is bonded onto a front surface side of a PDP, and a base chassis is bonded to a rear surface side with a two-sided tape. In an attaching portion for the base chassis and a casing, a spring structure portion having a sloped portion and a space is provided in an area of the base chassis so as to correspond to a connecting part of the casing. Impact to glass of the PDP is buffered to an impact force in a direction vertical to a surface of the PDP due to a spring property of the spring structure portion.Type: GrantFiled: June 16, 2009Date of Patent: January 10, 2012Assignees: Hitachi, Ltd., Fujitsu Hitachi Plasma Display LimitedInventors: Akito Tanokuchi, Kuninori Suzuki, Kazuo Imaoka
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Patent number: 8092982Abstract: Photosensitive paste compositions, barrier ribs of plasma display panels (PDPs) prepared using the same, and PDPs including the barrier ribs are provided. The photosensitive paste composition includes an organic-inorganic complex sol and an inorganic material, wherein the average refractive index (N1) of the organic-inorganic complex sol and the average refractive index (N2) of the inorganic material satisfy the equation ?0.2?N1?N2?0.2. Using the photosensitive paste composition, patterned barrier ribs for PDPs having high resolution and high precision can be made by exposure to light only once. Barrier ribs having higher reflective indices than conventional barrier ribs can also be obtained.Type: GrantFiled: March 25, 2008Date of Patent: January 10, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Beom-Wook Lee, Jong-Seo Choi, Kwi-Seok Choi, Dong-Hyun Kang, Seung-Han Lee, Myung-Duk Lim, Hoon-Bae Lee, Bum-Jin Chang, Min-Jae Lee
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Patent number: 8093810Abstract: A plasma display device embodying a touch panel function utilizing infrared rays that are generated when displaying an image and that are emitted in a uniform distribution manner in a display area. The plasma display device includes: a plasma display panel (PDP) for displaying an image; a chassis base attached to and supporting the PDP; an infrared ray sensor at a front surface or a rear surface of the PDP for detecting a change in amount of infrared rays emitted from the PDP; and a controller for receiving a detection signal and determining a position of the change in amount of infrared rays, the position of the change in amount of infrared rays defining a touch position.Type: GrantFiled: February 12, 2009Date of Patent: January 10, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Sang-Hoon Yim, Chun-Gyoo Lee, Jong-Han Rhee, Yu-Jeong Cho
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Patent number: 8093812Abstract: This invention provides a plasma tube array-type display sub-module that realizes one seamless large screen of a display device and prevents degradation in quality of an image to be displayed on the large screen. The electromagnetic wave shield layer is formed so as to extend beyond an effective display region over, where the plurality of plasma tubes is arranged on one side of the front-side supporting sheet. Moreover, at least one further function layer is formed only over the effective display region. The front-side supporting sheet with display electrodes and the electromagnetic wave shield layer is bent toward the back direction along a side end of the effective display region in order to join plasma tube array-type display sub-modules.Type: GrantFiled: June 17, 2009Date of Patent: January 10, 2012Assignee: Shinoda Plasma Co., Ltd.Inventors: Tetsuya Makino, Koji Shinohe, Hitoshi Hirakawa, Kenji Awamoto
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Patent number: 8093814Abstract: An electrode-forming composition and a plasma display panel manufactured using the electrode-forming composition are provided.Type: GrantFiled: May 15, 2007Date of Patent: January 10, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Chul-Hong Kim, Hyun-Mi Jeong
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Publication number: 20120001539Abstract: Some embodiments include methods of forming plasma-generating microstructures. Aluminum may be anodized to form an aluminum oxide body having a plurality of openings extending therethrough. Conductive liners may be formed within the openings, and circuitry may be formed to control current flow through the conductive liners. The conductive liners form a plurality of hollow cathodes, and the current flow is configured to generate and maintain plasmas within the hollow cathodes. The plasmas within various hollow cathodes, or sets of hollow cathodes, may be independently controlled. Such independently controlled plasmas may be utilized to create a pattern in a display, or on a substrate. In some embodiments, the plasmas may be utilized for plasma-assisted etching and/or plasma-assisted deposition. Some embodiments include constructions and assemblies containing multiple plasma-generating structures.Type: ApplicationFiled: September 13, 2011Publication date: January 5, 2012Applicant: MICRON TECHNOLOGY, INC.Inventors: Neal Rueger, Stephen J. Kramer
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Patent number: 8089434Abstract: A sheet in an electronic display is composed of a substrate containing an array of wire electrodes. The wire electrodes are preferably electrically connected to patterned transparent conductive electrode lines. The wire electrodes are used to carry the bulk of the current. The wire electrodes are capable of being extended away from the substrate and connected directly to the printed circuit board. The transparent conductive electrode (TCE) is used to spread the charge or voltage from the wire electrode across the pixel. It is a patterned film and must be at least 50% transparent, and, for most applications, is preferably over 90% transparent. In most display applications, the electroded surface of the electroded sheet has to be flattened. Use of a thin polymer substrate yields a light, flexible, rugged sheet that may be curved, bent or rolled.Type: GrantFiled: December 11, 2006Date of Patent: January 3, 2012Assignee: Nupix, LLCInventors: Chad B. Moore, Giacomo James Piazza
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Patent number: 8089210Abstract: This invention provides a plasma tube array-type display sub-module capable of reducing a possibility of occurrence of troubles on a plasma tube array during a manufacturing process even in a case where irregularities are formed on the back side of the plasma tube array, and a display device. The plasma tube array-type display sub-module comprises a plasma tube array including a plurality of plasma tubes arranged in parallel, the plasma tube array being held between an address electrode support sheet having address electrodes formed thereon and a display electrode support sheet having display electrodes formed thereon, wherein the plasma tube array is fixed to a sub-module frame through an intermediate layer that is made of a material more flexible than that of the plasma tube array and can deform along the irregularities on the address electrode support sheet of the plasma tube array.Type: GrantFiled: June 17, 2009Date of Patent: January 3, 2012Assignee: Shinoda Plasma Co., Ltd.Inventors: Koji Shinohe, Takamitsu Bunno, Yoshio Shibukawa, Bingang Guo, Naganori Tsutsui, Hitoshi Hirakawa, Kenji Awamoto
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Patent number: 8084943Abstract: Disclosed is a plasma display panel wherein reduction of reflection and improvement in contrast and sharpness of image light can be attained at the same time. Specifically disclosed is a plasma display panel (10) comprising a front plate (200) and a back plate (100) arranged at a distance from each other, a partition wall (110) for dividing the discharge space formed between the front plate (200) and the back plate (100), a phosphor layer (130) formed within a discharge cell (120) defined by the partition wall (110), electrodes respectively arranged on the front plate (200) and the back plate (100) for producing a discharge within the discharge cell (120), and a front filter (300) arranged on the viewer side of the front plate (200). The front filter (300) has two resin layers (320, 330) having different refractive indexes on the viewer side, and the viewer side surface of the front filter (300) and the interface between the two resin layers (320, 330) respectively have fine recesses and projections.Type: GrantFiled: November 27, 2008Date of Patent: December 27, 2011Assignee: Panasonic CorporationInventor: Syunsuke Kimura
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Patent number: 8080940Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate positioned to be opposite to the front substrate, a barrier rib positioned between the front substrate and the rear substrate, and a seal layer positioned between the front substrate and the rear substrate. The seal layer includes a plurality of beads, and a size of the bead is larger than a height of the barrier rib.Type: GrantFiled: December 28, 2007Date of Patent: December 20, 2011Assignee: LG Electronics Inc.Inventors: Jaeyoung Oh, Woogon Jeon, Heerak Kim, Daeil Han
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Patent number: 8076850Abstract: A light emitting tube array is provided which includes: front and rear plates; and a plurality of elongated light emitting tubes each filled with a discharge gas and disposed parallel to each other between the front and rear plates, the front plate being transparent and having an enough rigidity to support the light emitting tubes, the front plate including at least one pair of display electrodes provided thereon in contact with the light emitting tubes as extending perpendicularly to the light emitting tube, the rear plate having an enough flexibility to adapt to variation in sectional dimensions of the light emitting tubes, the rear plate including address electrodes provided thereon in contact with the respective light emitting tubes as extending longitudinally of the light emitting tubes.Type: GrantFiled: December 3, 2008Date of Patent: December 13, 2011Assignee: Shinoda Plasma CorporationInventors: Yoshio Shibukawa, Koji Shinohe, Hitoshi Hirakawa, Kenji Awamoto
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Patent number: 8076704Abstract: An organic light emitting device according to an embodiment includes a thin film transistor substrate including a plurality of thin film transistors and an over-coating film formed on the thin film transistors. The over-coating film includes a curved surface on at least two pixels among pixels of different colors and the slope angles of depressed portions forming the curved surface are respectively different from each other depending on the colors of the pixels. A plurality of first electrodes formed on the over-coating film includes a surface formed according to the curved surface, an organic light emitting member formed on the first electrodes includes a surface formed according to the curved surface, and a second electrode formed on the organic light emitting member includes a surface formed according to the curved surface. Slope angles of the depressed portions increase according to a decrease of wavelengths of the colors of the pixels.Type: GrantFiled: May 27, 2008Date of Patent: December 13, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Baek-Woon Lee, Young-In Hwang
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Patent number: 8076851Abstract: A plasma display panel including a front substrate and a back substrate facing each other across a discharge space, and a plurality of row electrode pairs and a plurality of column electrodes extending in a direction orthogonal to the row electrodes. The row electrodes and said column electrodes being provided between the front substrate and the back substrate and forming unit light emission areas at intersections with each other within the discharge space. A crystal having a volumetric particle-size distribution in which a ratio of a crystal having a particle size of 0.7 ?m or less is 25% or less, is provided in an area facing the discharge space between the front substrate and the back substrate.Type: GrantFiled: May 3, 2010Date of Patent: December 13, 2011Assignee: Panasonic CorporationInventors: Taro Naoi, Hai Lin, Eishiro Otani, Hiroshi Ito
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Patent number: 8076849Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate on which first and second electrodes are positioned parallel to each other, a rear substrate on which a third electrode is positioned to intersect the first and second electrodes, and a barrier rib positioned between the front and rear substrates to partition a discharge cell. At least one of the first or second electrode has a single-layered structure. At least one of the first or second electrode includes a plurality of line portions intersecting the third electrode, a projecting portion projecting from the line portion, and a connecting portion connecting at least two line portions to each other. The projecting portion and the connecting portion are positioned in a straight line.Type: GrantFiled: October 24, 2007Date of Patent: December 13, 2011Assignee: LG Electronics Inc.Inventors: Seongnam Ryu, Woogon Jeon, Wootae Kim, Kyunga Kang, Jeonghyun Hahm, Jaesung Kim
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Publication number: 20110298364Abstract: A plasma display panel has a front plate, and a rear plate arranged so as to be opposed to the front plate. The front plate has a display electrode, a dielectric layer to cover the display electrode, and a protective layer to cover the dielectric layer. The protective layer has a luminescence peak in a wavelength ranging from not less than 350 nm to not more than 550 nm under irradiation of light having a wavelength of 146 nm. In addition, the protective layer has a luminescence peak in a wavelength ranging from not less than 350 nm to not more than 550 nm under irradiation of light having a wavelength of 173 nm. A ratio A/B between a peak intensity of luminescence under the light having the wavelength of 146 nm and a peak intensity of luminescence under the light having the wavelength of 173 nm falls within a range from more than 3.0 to not more than 7.0.Type: ApplicationFiled: February 8, 2011Publication date: December 8, 2011Inventors: Hideji Kawarazaki, Keiji Horikawa, Chiharu Koshio, Kanako Okumura
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Publication number: 20110298363Abstract: A first aim of the present invention is to provide a PDP capable of stably delivering favorable image display performance and being driven with low power, by improving the surface layer to improve secondary electron emission characteristics and charge retention characteristics. A second aim of the present invention is to provide a PDP, in addition to having the above-mentioned effects, capable of reducing an aging time. In order to achieve these aims, a crystalline film of a film thickness of approximately 1 ?m is disposed as a surface layer (protective film) 8 on a surface of the dielectric layer 7 that faces a discharge space. The surface layer 8 is made by adding Sr to CeO2, and a concentration of Sr in the surface layer 8 is in a range of 11.8 mol % to 49.4 mol % inclusive. With this structure, an attempt is made to improve the secondary electron emission characteristics and aging characteristics in the surface layer 8.Type: ApplicationFiled: January 13, 2010Publication date: December 8, 2011Applicant: PANASONIC CORPORATIONInventors: Yusuke Fukui, Masahiro Sakai, Mikihiko Nishitani, Yosuke Honda, Michiko Okafuji, Yasuhiro Yamauchi
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Patent number: 8072142Abstract: A plasma display panel (PDP) with excellent display quality, including a dielectric layer that does not contain lead, satisfies transmittance, insulation resistance and dielectric constant, and suppresses coloring. The PDP includes front panel and a rear panel disposed facing each other and sealed together at the peripheries thereof with discharge space provided therebetween. The front panel includes display electrodes, a dielectric layer and a protective layer on a front glass substrate. The rear panel includes electrodes, barrier ribs and phosphor layers on a substrate. In the PDP, the display electrode includes metal bus electrodes containing silver. The dielectric layer includes a first dielectric layer covering metal bus electrodes and containing bismuth oxide, and a second dielectric layer covering the first dielectric layer and containing bismuth oxide. The thickness ratio of the second dielectric layer to the first dielectric layer is 1.3 or more and 7.2 or less.Type: GrantFiled: February 8, 2007Date of Patent: December 6, 2011Assignee: Panasonic CorporationInventors: Akira Kawase, Kazuhiro Morioka, Tatsuo Mifune
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Patent number: 8072778Abstract: A plasma display device capable of reducing an electromagnetic interference wave due to a driving current flowing in a plasma display panel is provided. The plasma display device includes a plasma display panel having electrodes that are parallel to each other, a driver circuit board for applying a voltage to the electrodes, a chassis conductor holding the plasma display panel and to which a ground of the driver circuit board is connected, and a first additional conductor plate provided to the chassis conductor via an insulating layer and to which grounds of at least one circuit board in circuit boards other than the driver circuit board are attached.Type: GrantFiled: March 16, 2009Date of Patent: December 6, 2011Assignee: Panasonic CorporationInventors: Hiroshi Kunimoto, Hirotsugu Fusayasu, Shouichi Mimura, Kei Ichikawa, Masafumi Kumoi, Ryo Matsubara, Masato Tobinaga, Toshiyuki Nakaie
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Patent number: 8072141Abstract: A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) and an external light shield sheet which absorbs external light incident upon the PDP. The external light shield sheet includes a base unit and a plurality of pattern units which are formed in the base unit. Each of the pattern units contains 2-10 weight % of light absorption particles having a size of 1 ?m or less. Since the external light shield sheet which can absorb and shield as much external light as possible is disposed at the front of the PDP, the plasma display device can effectively realize black images and improve bright room contrast.Type: GrantFiled: August 10, 2007Date of Patent: December 6, 2011Assignee: LG Electronics Inc.Inventors: Hong Rae Cha, Ji Hoon Sohn, Sam Je Cho, Woo Sung Jang, Woon Seo Shin
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Patent number: 8072144Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate on which a scan electrode and a sustain electrode are positioned, a first black layer positioned between the scan electrode and the front substrate and between the sustain electrode and the front substrate, a rear substrate on which an address electrode is positioned to intersect the scan electrode and the sustain electrode, and a barrier rib that is positioned between the front substrate and the rear substrate to partition a discharge cell. The first black layer includes cobalt (Co) material and ruthenium (Ru) material. The barrier rib including lead (Pb) equal to or less than 1,000 ppm (parts per million).Type: GrantFiled: January 16, 2008Date of Patent: December 6, 2011Assignee: LG Electronics Inc.Inventors: Gibum Lee, Jihoon Lee, Seongnam Ryu, Jongmun Yang, Myongsoon Jung, Jain Goo, Jeonghyun Hahm, Hyeonjae Lee, Jinyoung Kim
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Publication number: 20110291547Abstract: A Plasma Display Panel (PDP) enabling optimization of a process to apply phosphor paste in order to achieve mass production using a jet nozzle method includes dummy areas structured to determine whether application conditions such as an ejecting pressure or the like are stable by measuring a depth of the applied layer after applying phosphor paste at a portion thereof in advance. The PDP includes: a first substrate and a second substrate opposing each other; address electrodes arranged on the first substrate; display electrodes arranged on the second substrate along a direction perpendicular to the address electrodes; barrier ribs arranged in a space between the first substrate and the second substrate to define a plurality of discharge cells, and phosphor layers arranged in each of the discharge cells.Type: ApplicationFiled: August 2, 2011Publication date: December 1, 2011Applicant: SAMSUNG SDI CO., LTD.Inventor: Byung-Soo Jeon
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Publication number: 20110285281Abstract: A plasma display panel includes a front plate and a rear plate disposed in such a manner as to face the front plate. The front plate has a display electrode and a dielectric layer covering the display electrode. The dielectric layer contains substantially no lead components but contains MgO, SiO2, and K2O. A content of MgO is in a range between 0.3 mol % and 1.0 mol %, both inclusive. The content of SiO2 is in a range between 35 mol % and 50 mol %, both inclusive.Type: ApplicationFiled: December 17, 2010Publication date: November 24, 2011Inventors: Yoshiyuki Ota, Kazuhiro Morioka, Akira Kawase, Morio Fujitani, Tatsuo Mifune
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Publication number: 20110279030Abstract: A front plate and a back plate are superposed with each other in parallel, and pressed onto each other. Moreover, the back plate and a gas-blowing jig are brought into close contact with each other. The glass pipe in which a glass fiber filter paper is placed is pressed onto the back plate, with a solid-state glass frit ring interposed therebetween. Thus, by using a glass pipe, a nitrogen, Xe, or Ne gas is supplied into the panel, or the inside of the panel is evacuated.Type: ApplicationFiled: May 2, 2011Publication date: November 17, 2011Inventors: Takayuki ASHIDA, Tomohiro OKUMURA, Shuzo TSUCHIDA, Mamoru WATANABE
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Patent number: 8058804Abstract: A display panel includes a plurality of light guides which emit received light, and a plurality of external light blocking members which are disposed between exit surfaces of the plurality of light guides, and block light from the outside. Accordingly, the bright room contrast of the PDP is enhanced.Type: GrantFiled: March 19, 2007Date of Patent: November 15, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Seok-il Yoon, Jeong-ho Nho, Sung-hwan Lim, Wook-jae Jeon, Dae-hee Lee
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Patent number: 8058805Abstract: A PDP includes first and second substrates facing each other, a plurality of address electrodes disposed on one surface of the first substrate, a first dielectric layer covering the address electrodes, barrier ribs disposed between the first substrate and the second substrate and partitioning a plurality of discharge cells, a phosphor layer disposed in the discharge cells, a plurality of display electrodes disposed in a direction generally perpendicular to the address electrodes and positioned on the surface of the second substrate facing the first substrate, a second dielectric layer covering the display electrodes, and a protective layer covering the second dielectric layer. The protective layer includes particles of strontium oxide (SrO).Type: GrantFiled: March 1, 2010Date of Patent: November 15, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Sung-Hyun Lim, Young-Kee Kim
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Patent number: 8057979Abstract: A photosensitive paste composition for forming a black layer on top of plasma display panel (PDP) barrier ribs includes black pigment nanoparticles for contrast enhancement and a cyclic acid anhydride for fundamentally preventing the gelation of the paste composition. The photosensitive paste composition prevents electrical or optical crosstalk between adjacent discharge cells to achieve better contrast. The fundamental prevention of the gelation of the paste composition permits the paste composition to have good storage stability.Type: GrantFiled: January 4, 2006Date of Patent: November 15, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Beom-Wook Lee, Dong-Hee Han, Sang-Wook Sin, Jin-Hwan Jeon
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Patent number: 8054626Abstract: A display apparatus having a front substrate that is a display panel, a rear substrate disposed at a predetermined distance apart from the front substrate and facing the front substrate, the rear substrate comprising a back light unit, and a cooling device to remove heat generated by the rear substrate. The cooling device includes an actuator disposed between the front substrate and the rear substrate, the actuator to generate an ion wind using a voltage, a transparent electrode installed to face the actuator and which is grounded, a plurality of supports to support ends of the actuator, and a high-voltage power source to apply a voltage to the actuator.Type: GrantFiled: March 11, 2010Date of Patent: November 8, 2011Assignee: SAMSUNG Electronics Co., Ltd.Inventors: You-seop Lee, Jong-seok Kim
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Patent number: 8053986Abstract: A Plasma Display Panel (PDP) enabling optimization of a process to apply phosphor paste in order to achieve mass production using a jet nozzle method includes dummy areas structured to determine whether application conditions such as an ejecting pressure or the like are stable by measuring a depth of the applied layer after applying phosphor paste at a portion thereof in advance. The PDP includes: a first substrate and a second substrate opposing each other; address electrodes arranged on the first substrate; display electrodes arranged on the second substrate along a direction perpendicular to the address electrodes; barrier ribs arranged in a space between the first substrate and the second substrate to define a plurality of discharge cells, and phosphor layers arranged in each of the discharge cells.Type: GrantFiled: September 13, 2007Date of Patent: November 8, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Byung-Soo Jeon
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Patent number: 8053989Abstract: A plasma display panel includes a front panel including a glass substrate, a display electrode formed thereon, a dielectric layer formed so as to cover the display electrode, and a protective layer formed on the dielectric layer; and a rear panel disposed facing the front panel so that discharge space is formed and including an address electrode formed in a direction intersecting the display electrode, and a barrier rib for partitioning the discharge space. The dielectric layer of the front panel contains bismuth oxide and calcium oxide without containing lead, and does not contain lead. The protective layer on the dielectric layer is formed by forming a base film on the second dielectric layer and attaching a plurality of crystal particles made of metal oxide to the base film so as to be distributed over an entire surface of the base film.Type: GrantFiled: February 25, 2009Date of Patent: November 8, 2011Assignee: Panasonic CorporationInventors: Koyo Sakamoto, Akira Shiokawa, Kaname Mizokami, Shinichiro Ishino, Hiroyuki Kado, Yoshinao Ooe, Hideji Kawarazaki, Kazuo Uetani
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Patent number: 8053987Abstract: It is an object of the present invention to provide a PDP and an FED with excellent visibility and a high level of reliability that each have an antireflective function by which reflection of external light can be reduced. A plurality of adjacent pyramidal-shaped projections and an antireflective layer equipped with a covering film that covers the projections are provided. The reflection of light is prevented by the index of refraction of incident light from external being changed by a pyramid, which is a physical shape, projecting out toward an external side (atmosphere side) of a substrate that is to be used as a display screen as well as by the covering film used to cover the projections being formed of a material that has a higher index of refraction than the index of refraction of the pyramidal projection.Type: GrantFiled: December 5, 2007Date of Patent: November 8, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yuji Egi, Jiro Nishida, Takeshi Nishi
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Patent number: 8049423Abstract: A PDP includes a first substrate and a second substrate disposed to face each other, a plurality of address electrodes on the first substrate, a plurality of display electrodes on the second substrate, the display electrodes facing the first substrate and crossing the address electrodes, a first dielectric layer on the second substrate, the display electrodes being between the first dielectric layer and the second substrate, a first protective layer on the dielectric layer, the first protective layer including a low work function material, and a second protective layer on the first protective layer, the second protective layer including a high work function material and openings exposing the first protective layer in regions corresponding to the display electrodes.Type: GrantFiled: July 23, 2009Date of Patent: November 1, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Chun-Gyoo Lee, Seong-Chan Bae, Sang-Hun Jang, Yong-Shik Hwang
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Publication number: 20110260609Abstract: Embodiments of the invention provide for large arrays of microcavity plasma devices that can be made inexpensively, and can produce large area but thin displays or lighting sources Interwoven metal wire mesh, such as interwoven Al mesh, consists of two sets of wires which are interwoven in such a way that the two wire sets cross each other, typically at ?ght angles (90 degrees) although other patterns are also available Fabrication is accomplished with a simple and inexpensive wet chemical etching process The wires in each set are spaced from one another such that the finished mesh forms an array of openings that can be, for example, square, rectangular or diamond-shaped The size of the openings or microcavities is a function of the diameter of the wires in the mesh and the spacing between the wires in the mesh used to form the array of microcavity plasma devices.Type: ApplicationFiled: October 27, 2008Publication date: October 27, 2011Applicant: The Board of Trustees of the University of IllinoisInventors: J. Gary Eden, Sung-Jin Park, Andrew J. Price, Jason D. Readle, Clark J. Wagner