With Dielectric Member Patents (Class 313/586)
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Patent number: 8227987Abstract: Provided are a protecting layer for a plasma display panel (PDP), a method of forming the same, and a PDP including the protecting layer. The protecting layer includes a magnesium oxide-containing layer having a surface to which magnesium oxide-containing particles having a magnesium vacancy-impurity center (VIC) are attached. The protecting layer is resistant to plasma ions and has excellent electron emission effects, and thus, a PDP including the protecting layer can be operated at low voltage with high discharge efficiency.Type: GrantFiled: December 12, 2008Date of Patent: July 24, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Min-Suk Lee, Jong-Seo Choi, Suk-Ki Kim, Yury Matulevich, Jae-Hyuk Kim, Soon-Sung Suh, Hee-Young Chu
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Patent number: 8227988Abstract: Provided is a material for forming barrier ribs, barrier ribs formed using the material, and a PDP comprising the barrier ribs. The material is photosensitive and made from a glass frit composition which is environmentally friendly (no Pb or Bi) and also prevents light scattering. The primary component of the glass frit is P2O5. Other components can be included in the barrier rib forming material such as an alkali-based metal oxide, B2O3, SiO2, etc. The barrier rib formed of the glass frit can additionally include a photosensitive organic material which may include a crosslinking agent, a polyfunctional monomer or oligomer, a photo initiator, a binder and an additive. A method of forming the barrier ribs comprising the glass frit composition is also provided as is a PDP including such barrier ribs.Type: GrantFiled: September 10, 2009Date of Patent: July 24, 2012Assignee: Samsung SDI Co., LtdInventors: Beom-Wook Lee, Jong-Seo Choi, Kwi-Seok Choi, Myung-Duk Lim, Bum-Jin Chang, Jong-Hee Hwang
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Patent number: 8227972Abstract: A display filter includes a base film disposed on a display panel. The base film includes a phototransmissive unit having a constant horizontal cross-sectional area, and a light absorbing unit which includes a light absorbing material and surrounds the phototransmissive unit. A plasma display panel (PDP) may include the display filter. The display filter may improve ambient contrast by increasing the transmittance of light emitted by a display panel and by blocking externally incident light.Type: GrantFiled: July 1, 2010Date of Patent: July 24, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Yeon-Joo Choi, Cha-Won Hwang, Sang-Mi Lee, Seung-Goo Baek
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Patent number: 8223090Abstract: A plasma display device is disclosed. The device includes a plasma display panel including an address electrode, first and second display electrodes crossing the address electrode, a dielectric layer covering the display electrodes, and an MgO protective layer covering the dielectric layer. The device also includes a driver configured to generate a sustain pulse width of 1 to 3.5 ?s, and a statistical delay time (Ts) depending on temperature is represented by the following Formula 1: y=A×e?kx??(Formula 1), wherein k is a constant, x is 1/temperature, y is 1/Ts, and A is a constant. The MgO protective layer may be formed by MgO deposition in which water vapor partial pressure is in a range of from 2×10?7 to 6×10?7 Torr·l/s. The temperature dependency of the discharge characteristics is reduced, response speed is improved, and the discharge stability is improved.Type: GrantFiled: March 18, 2008Date of Patent: July 17, 2012Assignee: Samsung SDI Co., Ltd.Inventor: Ki-Dong Kim
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Patent number: 8222814Abstract: The present invention improves discharge characteristics of a protective layer in order to provide a PDP that exhibits excellent display performance even if the PDP is of a fine-cell structure. The present invention also provides a manufacturing method for the PDP. In particular, a protective layer 8 is composed of an MgO film layer 81 and an MgO particle layer 82 that is made of MgO particles 16. The MgO particles 16 are formed by burning an MgO precursor and satisfy that a/b?1.2, where a denotes a spectrum integral value in a wavelength region of a CL spectrum from 650 nm to 900 nm, exclusive of 900 nm, and b denotes a spectrum integral value in a wavelength region of the CL spectrum from 300 nm to 550 nm, exclusive of 550 nm.Type: GrantFiled: October 19, 2007Date of Patent: July 17, 2012Assignee: Panasonic CorporationInventors: Masaharu Terauchi, Yusuke Fukui, Takuji Tsujita, Michiko Okafuji, Mikihiko Nishitani
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Patent number: 8223101Abstract: A flat panel display is disclosed. The flat panel display includes a plurality of electrically addressable pixels, a plurality of thin-film transistor driver circuits each been electrically coupled to an associated at least one of the pixels, respectively, a passivating layer on the thin-film transistor driver circuits and at least partially around the pixels, a conductive frame on the passivating layer, and a plurality of nanostructures on the conductive frame, wherein, creating a voltage difference between the pixels and the conductive frame by addressing one of the pixels using the associated driver circuit causes the nanostructures to emit electrons that induce a corresponding one of the pixels to emit light.Type: GrantFiled: October 29, 2008Date of Patent: July 17, 2012Assignee: Copytele, Inc.Inventors: Frank DiSanto, Denis Krusos
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Patent number: 8222816Abstract: A multi plasma display panel is disclosed. The multi plasma display panel includes a plurality of plasma display panels positioned adjacent to one another, each of the plurality of plasma display panels including, a front substrate on which a first electrode is positioned, a rear substrate on which a second electrode crossing the first electrode is positioned, a barrier rib between the front substrate and the rear substrate, the barrier rib providing a plurality of discharge cells, and an exhaust hole on the rear substrate. The exhaust hole is formed in at least one of the plurality of discharge cells. A size of a discharge cell in which the exhaust hole is formed is greater than a size of at least one discharge cell in which the exhaust hole is not formed.Type: GrantFiled: December 15, 2009Date of Patent: July 17, 2012Assignee: LG Electronics Inc.Inventors: Soomyun Lee, Yonggi Choi, Kyungtae Kim
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Publication number: 20120176031Abstract: A plasma display panel includes a front plate and a rear plate disposed so as to face the front plate. A discharge space is formed between the front plate and the rear plate. The front plate includes display electrodes and a dielectric layer formed to coat the display electrodes. The dielectric layer includes hollow fine particles which are hollowed out inside.Type: ApplicationFiled: March 20, 2012Publication date: July 12, 2012Inventors: Takashi FURUTANI, Yukako Doi, Yasuhiko Nakada, Hiroyuki Ajiki
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Publication number: 20120176030Abstract: A plasma display panel includes a front plate, and a rear plate disposed oppositely to the front plate and having barrier ribs to partition a discharge cell between the front plate and the rear plate. The front plate has a first electrode and a second electrode in parallel with the first electrode inside the discharge cell. The first electrode includes a first bus electrode, and a plurality of first transparent electrodes electrically connected to the first bus electrode and protruding toward a second-electrode side. The second electrode includes a second bus electrode, and a plurality of second transparent electrodes electrically connected to the second bus electrode and protruding toward a first-electrode side. A discharge gap is provided between tips of the plurality of first transparent electrodes and tips of the plurality of second transparent electrodes.Type: ApplicationFiled: January 27, 2011Publication date: July 12, 2012Inventors: Shinichiro Hori, Koichi Mizuno, Kimio Amemiya
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Patent number: 8217575Abstract: A plasma display panel (PDP) including: first and second opposing substrates; a discharge layer disposed between the substrates, having discharge cells; address electrodes disposed on the first substrate, extending in a first direction, across the discharge cells; and display electrodes disposed on the second substrate, extending across the discharge cells in a second direction. The discharge layer includes: a discharge enhancement layer disposed on the first substrate, having first spaces; and a barrier rib layer disposed on the discharge enhancement layer, having second spaces that are connected to the first spaces, so as to form the discharge cells. The discharge enhancement layer further includes a perimeter member disposed in a dummy area provided at the edges of an effective area of the PDP.Type: GrantFiled: October 11, 2010Date of Patent: July 10, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Soon-Dong Jeong, Jae-Huy Park, Kyoung-Sik Jeon, Sun-Sik Kong, Bon-Joo Koo, Jung-Min Kim, Young-Soo Seo, Hyoung-Bin Park, Yu-Il Jang, Sung-Mun Ryu, Chong-In Chung, Sang-Hyuck Ahn, Jung-Sup Kwak
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Patent number: 8216017Abstract: In a method of fabricating a planar light source, a first substrate is formed at first. First electrodes approximately parallel to each other are formed on the first substrate. Sets of first dielectric patterns are formed on the first substrate. Each set of the first dielectric patterns includes at least two first striped dielectric patterns, and each of the first striped dielectric patterns covers one of the first electrodes correspondingly. The edges of the top of each first striped dielectric pattern are raised in a peak shape. A phosphor layer is formed between the first striped dielectric patterns of each set of the first dielectric patterns. A second substrate is formed. The first and second substrates are bound; meanwhile, a discharge gas is injected into the discharge space.Type: GrantFiled: August 24, 2009Date of Patent: July 10, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Yu-Heng Hsieh, Chu-Chi Ting, Shinn-Haw Huang, Chang-Jung Yang, Chia-Hua Ai
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Patent number: 8207672Abstract: A technique for achieving both discharge voltage reduction and discharge stabilization in a PDP and the like is provided. This PDP manufacturing method includes, for a structure of a front plate structure (11) to be exposed to a discharge space (30) to be filled with a discharge gas, a step of forming a first layer (4) having an effect of discharge protective layer on a dielectric layer (3), a step of forming a second layer (5) for protecting the first layer on the first layer, and a step of forming a third layer (6) of a powder for discharge stabilization to be exposed to the discharge space (30), the steps being performed in vacuum manufacturing process. And, the structure is made such that a surface of the first layer is exposed to the discharge space (30) by a step of removing the second layer by an aging discharge in the discharge space (30).Type: GrantFiled: October 2, 2007Date of Patent: June 26, 2012Assignee: Hitachi, LtdInventors: Keiichi Betsui, Shinya Fukuta, Tadayoshi Kosaka, Minoru Hasegawa, Hajime Inoue, Yoshiho Seo, Tomonari Misawa
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Patent number: 8198813Abstract: A plasma display panel including a front panel including a front glass substrate, a display electrode formed on the substrate, a dielectric layer formed to cover the display electrode, and a protective layer formed on the dielectric layer; and a rear panel 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 protective layer includes a base film on the dielectric layer and aggregated particles of a plurality of aggregated metal-oxide crystal particles attached to the base film so that they are distributed over an entire surface. The aggregated particles are attached so that the number of aggregated particles per 10000 ?m2 is not less than 45 and not more than 350.Type: GrantFiled: January 27, 2009Date of Patent: June 12, 2012Assignee: Panasonic CorporationInventors: Yoshinao Ooe, Shinichiro Ishino, Yuichiro Miyamae, Koyo Sakamoto, Shinya Nakashima, Ryoichi Inoue, Kaname Mizokami
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Patent number: 8198810Abstract: A method of manufacturing an electromagnetic wave shield for a plasma display panel having a first panel having an image-displaying surface, the method including coating the image-displaying surface of the first panel with a coating solution to form a hydrophobic layer; applying a conductive ink to the hydrophobic layer utilizing an ink-jet applicator to form a pattern of the conductive ink; and heating the conductive ink and the hydrophobic layer to form a conductive mesh pattern on the hydrophobic layer.Type: GrantFiled: December 3, 2009Date of Patent: June 12, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jaeseok Lim, Sangyoung Jin, Minhyung Kim, Heeyoul Yoon, Ria Ju, Younghak Pyo, Seunghyuck Paek, Sangchul Seo
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Patent number: 8193707Abstract: The black bus electrode of plasma display panel is formed from a conductive composition comprising a conductive powder, glass powder, organic binder, organic solvent, and black pigment, wherein the conductive powder is platinum particle or gold particle.Type: GrantFiled: November 6, 2007Date of Patent: June 5, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Hasashi Matsuno, Michael F. Barker
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Patent number: 8188661Abstract: A plasma display panel (PDP), which is capable of performing a display with a high brightness and having a low power consumption, includes a front panel having display electrodes formed, a dielectric layer covering the display electrodes, and a protective layer formed on the dielectric layer. Further, the PDP includes rear panel having address electrodes formed along a direction intersecting the display electrodes, and barrier ribs. The front and rear panels form, therebetween, a discharge space portioned by the barrier ribs and filled with discharge gas. A protective layer is formed of a metal oxide of MgO and CaO, such that an X-ray diffraction analysis on a surface of the protective layer indicates that the metal oxide has a peak between a diffraction angle where a peak of MgO occurs and a diffraction angle where a peak of CaO occurs along an identical orientation of the MgO peak.Type: GrantFiled: September 28, 2009Date of Patent: May 29, 2012Assignee: Panasonic CorporationInventors: Jun Hashimoto, Masashi Gotou, Yasuyuki Noguchi
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Patent number: 8188659Abstract: An electrode composition includes a metal in an amount of about 52% to about 62% by weight of the composition, a glass insulation material in an amount of about 5% to about 7% by weight of the composition, a coloring agent in an amount of about 3% to about 9% by weight of the composition, and a vehicle.Type: GrantFiled: April 8, 2008Date of Patent: May 29, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Chul-Hong Kim, Jung-Keun Ahn, Hyun-Mi Jeong, Yeon-Joo Choi
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Patent number: 8183778Abstract: The present invention provides a phosphor with high luminance and color purity. The phosphor of the present invention is represented by the general formula: aYO3/2·(3?a)CeO3/2·bAlO3/2·cGaO3/2, where 2.80?a?2.99, 1.00?b?5.00, 0?c?4.00, and 4.00?b+c?5.00 are satisfied. In the phosphor, a peak whose peak top is located in the range of diffraction angle 2? of not less than 16.7 degrees but not more than 16.9 degrees is present in an X-ray diffraction pattern obtained by measurement on the phosphor using an X-ray with a wavelength of 0.774 ?.Type: GrantFiled: April 9, 2010Date of Patent: May 22, 2012Assignee: Panasonic CorporationInventors: Kojiro Okuyama, Yayoi Okui, Seigo Shiraishi
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Patent number: 8183777Abstract: A high definition plasma display panel which can display a video of a higher brightness and yet can be driven at a low power consumption is realized. To this end, a plasma display panel includes front panel including display electrode formed on glass substrate, dielectric layer 8 covering display electrode, and protective layer formed on dielectric layer; and a rear panel opposing to front panel to form a discharge space filled with discharge gas, and including an address electrode formed along a direction intersecting with display electrode, and a barrier rib partitioning the discharge space. Protective layer is formed of a metal oxide made of magnesium oxide and calcium oxide and contains silicon. In an X-ray diffraction analysis on a surface of protective layer, a diffraction angle where a peak of the metal oxide occurs exists between a diffraction angle where a peak of the magnesium oxide occurs and a diffraction angle where a peak of the calcium oxide occurs.Type: GrantFiled: December 10, 2009Date of Patent: May 22, 2012Assignee: Panasonic CorporationInventors: Jun Hashimoto, Masashi Gotou
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Patent number: 8183774Abstract: In a front plate for PDP, which includes: a large number of display electrodes formed in stripes on a substrate; a plurality of terminal groups for connection with an external drive circuit, each terminal group being formed along an edge of the substrate, the edge being extended in a direction orthogonal to an extending direction of the display electrode; and a large number of lead electrodes extended from the display electrodes, respectively, in a non-image display region on the substrate to gather toward any one of the terminal groups without intersecting each other, the lead electrodes being connected to corresponding terminals in the relevant terminal group, respectively, further, a large number of strip-shaped aid members for aiding formation of a dielectric layer are formed in a region located between the adjacent terminal groups. Thus, it is possible to make a circumference of a dielectric layer even although a dielectric material to be used is low in viscosity.Type: GrantFiled: December 11, 2008Date of Patent: May 22, 2012Assignee: Panasonic CorporationInventor: Shuzo Tsuchida
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Patent number: 8183775Abstract: “Discharge delay” and “dependence of discharge delay on temperatures” are solved by improving a protective layer, thus a PDP can be driven at a low voltage. Furthermore, the PDP can display excellent images by suppressing “dependence of discharge delay on space charges.” Liquid-phase magnesium alkoxide (Mg(OR)2) or acetylacetone magnesium ate whose purity is 99.95% or more is prepared, and is hydrolyzed by adding a small amount of acids to the solution. Thus, a gel of magnesium hydroxide that is a magnesium oxide precursor is formed. Burning the gel in atmosphere at 700° C. or more produces powder containing MgO particles 16a-16d having the NaCl crystal structure with (100) and (111) crystal faces or with (100), (110) and (111) crystal faces. By pasting the powder on a dielectric layer 7 or a surface layer 8, the MgO powder 16 is formed so as to serve as the protective layer.Type: GrantFiled: May 31, 2007Date of Patent: May 22, 2012Assignee: Panasonic CorporationInventors: Yusuke Fukui, Masaharu Terauchi, Takuji Tsujita
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Patent number: 8179044Abstract: A plasma display device with lowered discharge voltage by mixing activated carbon with phosphor layers and/or barrier ribs to produce carbon dioxide. The plasma display device includes a first substrate and a second substrate spaced from the first substrate, wherein the first substrate and the second substrate are sealed together. A plurality of barrier ribs are on the first substrate for defining a plurality of discharge cells between the first substrate and the second substrate. A phosphor layer is in the plurality of discharge cells, and a gas mixture including carbon dioxide is between the first and second substrates, wherein at least one of the phosphor layer or the plurality of barrier ribs includes an activated carbon.Type: GrantFiled: February 2, 2010Date of Patent: May 15, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Younggil Yoo, Kyeongwoon Chung
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Patent number: 8179043Abstract: A plasma display panel is formed of a front panel including display electrodes, a dielectric layer, and a protective layer which are formed on a glass substrate, and a rear panel including electrodes, barrier ribs, and phosphor layers all of which are formed on a substrate. The front panel and the rear panel confront each other, and peripheries thereof are sealed to form a discharge space therebetween. The dielectric layer of the front panel contains Bi2O3 and at least CuO and CoO, and the total content expressed in mole % of CuO and CoO falls within a range from 0.03% to 0.3%.Type: GrantFiled: August 4, 2008Date of Patent: May 15, 2012Assignee: Panasonic CorporationInventors: Akira Kawase, Kazuhiro Morioka, Yui Saitou, Shinsuke Yoshida, Tatsuo Mifune
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Patent number: 8169144Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate opposite the front substrate, a barrier rib that is positioned between the front substrate and the rear substrate to provide a discharge cell, a seal layer that attaches the front substrate to the rear substrate, and an exhaust hole that is formed on the rear substrate in a portion between the barrier rib and the seal layer. The exhaust hole is positioned in a portion overlapping an active area along a shorter side or a longer side of the rear substrate.Type: GrantFiled: January 27, 2010Date of Patent: May 1, 2012Assignee: LG Electronics Inc.Inventors: Younjin Kim, Jonghwa Baek, Hungun Park, Jain Goo, Wontae Kim, Sangyong Lee
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Patent number: 8164261Abstract: A plasma display panel includes a front plate and a rear plate disposed so as to face the front plate. A discharge space is formed between the front plate and the rear plate. The front plate includes display electrodes and a dielectric layer formed to coat the display electrodes. The dielectric layer includes hollow fine particles which are hollowed out inside.Type: GrantFiled: February 15, 2011Date of Patent: April 24, 2012Assignee: Panasonic CorporationInventors: Takashi Furutani, Yukako Doi, Yasuhiko Nakada, Hiroyuki Ajiki
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Patent number: 8164259Abstract: 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: GrantFiled: January 13, 2010Date of Patent: April 24, 2012Assignee: Panasonic CorporationInventors: Yusuke Fukui, Masahiro Sakai, Mikihiko Nishitani, Yosuke Honda, Michiko Okafuji, Yasuhiro Yamauchi
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Patent number: 8164260Abstract: A dielectric composition for plasma display panel and a plasma display panel including the same are disclosed. The dielectric composition includes about 38 to 68 parts by weight of Bi2O3, about 10 to 35 parts by weight of B2O3, about 1 to 17 parts by weight of SiO2, and about 1 to 15 parts by weight of Al2O3.Type: GrantFiled: December 11, 2007Date of Patent: April 24, 2012Assignee: LG Electronics Inc.Inventors: Woong Choi, Donghee Nam
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Patent number: 8159134Abstract: A preferred embodiment low stress electrode and a preferred array of microcavity plasma devices of the invention include a plurality of thin metal first electrodes and stress reduction structures and/or geometries designed to promote the flatness during and after processing. The first electrodes are buried in a thin metal oxide layer which protects the electrodes from the plasma in the microcavities. In embodiments of the invention, some or all of the electrodes are connected. Patterns of connections in a one- or two-dimensional array of microcavities can be defined. In preferred embodiments, the first electrodes comprise circumferential electrodes that surround individual microcavities. A second thin layer having a buried, second electrode is bonded to the first thin layer. A packaging layer, e.g., a thin glass or plastic layer, seals the discharge medium (a gas or vapor, or a combination of the two) into the microcavities.Type: GrantFiled: May 15, 2008Date of Patent: April 17, 2012Assignee: The Board of Trustees of the University of IllinoisInventors: J. Gary Eden, Sung-Jin Park
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Patent number: 8159133Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate positioned opposite the front substrate, and a barrier rib that is positioned between the front substrate and the rear substrate to partition discharge cells. The barrier rib includes a transverse barrier rib and a longitudinal barrier rib crossing each other. Depressions are positioned to be spaced apart from each other at a barrier crossing of the transverse barrier rib and the longitudinal barrier rib.Type: GrantFiled: November 28, 2008Date of Patent: April 17, 2012Assignee: LG Electronics Inc.Inventors: Jaeyoung Oh, Jiwon Woo
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Patent number: 8154203Abstract: A plasma display member does not cause an erroneous discharge in a display region end portion and includes: a substrate (1); a substantially stripe-shaped address electrode (2) arranged on the substrate (1); a dielectric layer (3) covering the address electrode (2) and a grid-shaped partition arranged on the dielectric layer (3) and having main walls (4) substantially parallel to the address electrode (2) and auxiliary walls (5) intersecting the main partitions (4). The auxiliary wall (5) intersecting the main wall (4) located at the outermost position among the main walls (4) located at non-display regions (7) at the right and left of a display region (6) has a bottom width identical to the bottom width (L1) of the main wall (4) located at the outermost position among the main walls (4) located at the non-display regions (7) at the right and left of the display region (6) which is multiplied by 0.3 to 1.0.Type: GrantFiled: July 30, 2007Date of Patent: April 10, 2012Assignee: Panasonic CorporationInventors: Minori Kamada, Kenichi Kawabe
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Patent number: 8154204Abstract: A plasma display panel includes a front plate having a dielectric layer covering a display electrode formed on a substrate and a protective layer formed on the dielectric layer, and a rear plate facing the front plate so as to form a discharge space. The plasma display panel also includes an address electrode in a direction crossing the display electrode, barrier ribs for partitioning the discharge space, and phosphor layers. The protective layer is constructed by forming a ground film on the dielectric layer and adhering agglomerated particles to the ground film. The agglomerated particles are produced by coagulating a plurality of crystal particles made of metal oxide.Type: GrantFiled: April 20, 2009Date of Patent: April 10, 2012Assignee: Panasonic CorporationInventors: Kaname Mizokami, Hiroshi Sogou, Shigeyuki Okumura
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Patent number: 8148899Abstract: A plasma display of this invention includes a front panel, and this front panel includes a substrate, a plurality of display electrode pairs formed in stripes on the substrate, a dielectric layer formed to cover the display electrode pair and the substrate, a dielectric-protective layer formed to cover the dielectric layer, and fine particles containing a crystal of a metal oxide, the fine particles being dispersed on a surface of the dielectric-protective layer. The display electrode pair is provided with a strip-shaped scanning electrode and a strip-shaped sustaining electrode each having a laminate structure of a transparent electrode and a bus electrode. In the surface of the dielectric-protective layer, a first region corresponding to a region facing the bus electrode of the scanning electrode is smaller than a second region corresponding to a region except the first region, with regard to a cover rate of the surface covered with the fine particles.Type: GrantFiled: April 1, 2009Date of Patent: April 3, 2012Assignee: Panasonic CorporationInventors: Satoshi Maeshima, Michiru Kuromiya, Seiji Nishitani, Masashi Morita
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Patent number: 8148898Abstract: A plasma display panel includes a first and a second panel. The first panel includes a first plate provided with a plurality of display electrodes extending in a first direction. The second panel includes a second plate facing the first plate via a discharge space, a plurality of first barrier ribs provided on the second plate, and a dent part opened to a side of the first plate. The dent part is provided in between the barrier ribs adjacent to each other. A width of the dent part along the first direction is formed to be narrower toward a side of the second plate from the side of the first plate for at least within a range from a position at a half of a depth to a bottom part of the dent part. As a result, a luminescent efficiency of the PDP can be improved.Type: GrantFiled: June 3, 2008Date of Patent: April 3, 2012Assignee: Hitachi, Ltd.Inventors: Hideaki Yanagita, Takashi Sasaki
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Patent number: 8143786Abstract: A plasma display panel includes a front panel including a glass front substrate, a display electrode formed on the substrate, 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 partitioning the discharge space. The protective layer is formed by forming a base film on the 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 at a covering rate of not less than 1% and not more than 15%.Type: GrantFiled: February 26, 2009Date of Patent: March 27, 2012Assignee: Panasonic CorporationInventors: Koyo Sakamoto, Shinichiro Ishino, Kaname Mizokami, Yuichiro Miyamae, Yoshinao Ooe
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Patent number: 8138673Abstract: Apparatus and method using a gas discharge device for shielding an object and/or person from electromagnetic (EM) radiation including radar, microwaves, X-rays, and/or gamma rays. The device comprises multiple gas discharge cells, each cell being within a gas-filled hollow shell. The gas is selected to absorb radiation particularly when the gas is in a discharge state. The shell may be composed of a radiation absorption material.Type: GrantFiled: November 22, 2008Date of Patent: March 20, 2012Assignee: Imaging Systems TechnologyInventor: Carol Ann Wedding
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Patent number: 8125149Abstract: A plasma display panel includes a pair of substrates which are opposite to each other and one of which includes display electrodes (6) and a dielectric layer (8) formed thereon, and the display electrodes (6) are made of a glass material containing 0.1 wt % to 5 wt % of at least one oxide of molybdenum, cerium, copper, tin, manganese, ruthenium, antimony, and iron.Type: GrantFiled: February 15, 2008Date of Patent: February 28, 2012Assignee: Panasonic CorporationInventors: Shuzo Tsuchida, Akinobu Miyazaki, Tsutomu Koshizuka, Akira Kawase
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Patent number: 8125148Abstract: A plasma display panel includes a front substrate, a rear substrate arranged to face the front substrate, barrier ribs for partitioning discharge cells between the front substrate and the rear substrate, and an exhaust hole formed on the rear substrate in an area between the barrier ribs and the seal layer. A distance between the outermost barrier rib and the seal layer is less than a circumferential length of the exhaust hole.Type: GrantFiled: March 24, 2010Date of Patent: February 28, 2012Assignee: LG Electronics Inc.Inventors: Wontae Kim, Hungun Park, Younjin Kim
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Patent number: 8123986Abstract: A plasma display device and a method of manufacturing a plasma display panel (PDP) are provided. The method includes applying onto a substrate a black matrix paste for forming a black matrix and an electrode paste for forming an electrode; laminating a dielectric material on the substrate; and firing the black matrix paste, the electrode paste, and the dielectric material at the same time. Therefore, it is possible to simplify the manufacture of a PDP by firing electrodes, black matrices, and a dielectric material at the same time. In addition, it is possible to reduce the probability of the generation of air bubbles by appropriately reducing the amount of glass frit in a paste. Moreover, it is possible to enhance the efficiency of driving a PDP and the reliability of a plasma display device.Type: GrantFiled: June 26, 2007Date of Patent: February 28, 2012Assignee: LG Electronics Inc.Inventors: Jung Sok Noh, Young Woo Seo, Chang Min Han
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Patent number: 8125150Abstract: A plasma display panel (PDP) including first and second substrates arranged opposite to each other, a plurality of first electrodes between the first and second substrates, a dielectric layer disposed on the first substrate, a plurality of second electrodes disposed in a direction crossing the first electrodes, and red, green, and blue phosphor layers disposed between the first and second substrates, wherein the dielectric layer includes a lead-free glass and at least one of CoO, CuO, MnO2, Cr2O3, or Fe2O3 as a metal oxide additive.Type: GrantFiled: October 19, 2009Date of Patent: February 28, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Tae-Joung Kweon, Sung-Hune Yoo
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Patent number: 8120254Abstract: A plasma display panel (PDP) includes a front panel (2) having a front glass substrate (3) on which display electrodes (6) are formed, a dielectric layer (8) covering the display electrodes (6), and a protective layer (9) formed on the dielectric layer (8). The PDP panel also includes a rear panel (10) facing the front panel (2) to form a discharge space therebetween, and including address electrodes formed along a direction intersecting with the display electrodes (6) and barrier ribs partitioning the discharge space. The protective layer (9) includes a primary film (91) made of MgO and formed on the dielectric layer (8), and aggregated particles (92) formed of several crystal particles of MgO aggregated together and at least one type of particles (93) made of non-organic material and different from aggregated particles (92). The particles (92) and (93) are distributed on the primary film (91).Type: GrantFiled: January 6, 2009Date of Patent: February 21, 2012Assignee: Panasonic CorporationInventors: Koji Aoto, Keiji Horikawa, Kaname Mizokami
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Patent number: 8120255Abstract: A plasma display panel (PDP) includes a front panel having a front glass substrate, a display electrode formed on the substrate, a dielectric layer formed to cover the display electrode, and a protective layer formed on the dielectric layer. Further, the PDP includes a rear panel facing the front panel so that a discharge space is formed, wherein the rear panel includes an address electrode in a direction intersecting the display electrode, and includes a barrier rib partitioning the discharge space. The PDP also includes a seal material providing a seal between the front panel and the rear panel at outer peripheries thereof. In the protective layer, a base film is formed on the dielectric layer and aggregated particles of metal oxide crystal particles are attached to the base film and distributed over a surface of a region inside the seal material.Type: GrantFiled: December 12, 2008Date of Patent: February 21, 2012Assignee: Panasonic CorporationInventors: Hideji Kawarazaki, Kaname Mizokami, Shinichiro Ishino, Koyo Sakamoto, Yuichiro Miyamae, Yoshinao Ooe
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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: 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: 8106587Abstract: Disclosed is a display apparatus comprising a panel assembly including a plurality of light-emitting cells divided into a light-emitting region and a non light-emitting region surrounding the light-emitting region, as viewed from a viewer, and a display filter disposed on the panel assembly and including an external light-shielding layer, the external light-shielding layer having light-shielding patterns formed on a side of the external light-shielding layer, wherein an area of the light-emitting region occupies about 60% or more of a total area of the plurality of light-emitting cells, and wherein a bias angle formed by an advancing direction of the light-shielding pattern and a longitudinal side of the panel assembly is about 5 degrees or less. The external light-shielding layer is applied to the display apparatus, thereby effectively preventing the moiré phenomenon from being occurred.Type: GrantFiled: July 27, 2007Date of Patent: January 31, 2012Assignee: Samsung Corning Precision Materials Co., Ltd.Inventors: Dae Chul Park, Seok Won Kim, Young Min Koo
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Patent number: 8102120Abstract: A plasma display panel that includes a first substrate and a second substrate facing each other, a plurality of address electrodes disposed on the first substrate, a plurality of display electrodes disposed on one side of the second substrate facing the first substrate in a direction crossing the address electrodes, and red, green, and blue phosphor layers disposed in a discharge space between the first and second substrates. The green phosphor layer includes a green phosphor and an inorganic pigment absorbing a wavelength of about 580 nm to about 640 nm. The plasma display panel includes a green phosphor layer having a reduced decay time and good color purity characteristics, as well as excellent luminance, discharge, and life-span characteristics.Type: GrantFiled: December 11, 2009Date of Patent: January 24, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Kyeongwoon Chung, Young Kwan Kim, Jung-Woo Moon, Soon-Rewl Lee, Young-Gil Yoo, Minkyu Kim, Jeong-Hyeon Ha, Jeong-Hee Kim
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Patent number: 8089211Abstract: “Discharge delay” and “dependence of discharge delay on temperatures” are solved by improving a protective layer, thus a PDP can be driven at a low voltage. Furthermore, the PDP can display excellent images by suppressing “dependence of discharge delay on space charges.” Liquid-phase magnesium alkoxide (Mg(OR)2) or acetylacetone magnesium ate whose purity is 99.95% or more is prepared, and is hydrolyzed by adding a small amount of acids to the solution. Thus, a gel of magnesium hydroxide that is a magnesium oxide precursor is formed. Burning the gel in atmosphere at 700° C. or more produces powder containing MgO particles 16a-16d having the NaCl crystal structure with (100) and (111) crystal faces or with (100), (110) and (111) crystal faces. By pasting the powder on a dielectric layer 7 or a surface layer 8, the MgO powder 16 is formed so as to serve as the protective layer.Type: GrantFiled: May 31, 2007Date of Patent: January 3, 2012Assignee: Panasonic CorporationInventors: Yusuke Fukui, Masaharu Terauchi, Takuji Tsujita
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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: 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: 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: RE43083Abstract: A gas discharge panel includes a first substrate and a second substrate. A plurality of display electrode pairs which are each made up of a sustain electrode and a scan electrode are formed on the first substrate, and the first substrate and the second substrate are set facing each other with a plurality of barrier ribs in between so as to form a plurality of cells. In this gas discharge panel, at least one of the sustain electrode and the scan electrode includes: a plurality of line parts; and a discharge developing part which makes a gap between adjacent line parts smaller in areas corresponding to channels between adjacent barrier ribs than in areas corresponding to the barrier ribs.Type: GrantFiled: August 16, 2001Date of Patent: January 10, 2012Assignee: Panasonic CorporationInventors: Masaki Nishimura, Hidetaka Higashino, Ryuichi Murai, Yusuke Takata, Nobuaki Nagao, Toru Ando, Naoki Kosugi, Hiroyuki Tachibana