With Dielectric Member Patents (Class 313/586)
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Patent number: 7583027Abstract: A plasma display apparatus is provided. The plasma display apparatus may include an upper substrate positioned facing a lower substrate, an upper electrode pair including a scan electrode and a sustain electrode formed on the upper substrate, an address electrode formed on the lower substrate, and at least one barrier rib positioned between the upper substrate and the lower substrate. A dielectric layer may be formed on the upper substrate, covering the upper electrode pair. In certain embodiments, a dielectric constant of a portion of the dielectric layer in an area between the scan electrode and the sustain electrode may be different from a portion of the dielectric layer in an area that overlaps the scan electrode and the sustain electrode. In alternative embodiments, a dielectric constant of a portion of the dielectric layer in an area that overlaps the at least one barrier rib may be different from a dielectric constant in an area that does not overlap the at least one barrier rib.Type: GrantFiled: January 12, 2006Date of Patent: September 1, 2009Assignee: LG Electronics Inc.Inventor: Hyung Dal Joo
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Patent number: 7576489Abstract: A plasma display panel module includes a plasma display panel having a rear plate and a front plate installed in parallel with the rear plate, an aluminum plate, and a plurality of fixing devices. The rear plate of the plasma display panel is installed between the front plate of the plasma display panel and the aluminum plate. The plurality of fixing devices has one end fixed to the aluminum plate, and the other end fixed to the front plate of the plasma display panel.Type: GrantFiled: June 20, 2006Date of Patent: August 18, 2009Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Yao-Tung Hsu
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Patent number: 7576491Abstract: A plasma display panel that is adaptive for improving yield and mass productivity and a fabricating method thereof. A plasma display panel according to an embodiment of the present invention includes a first substrate; a second substrate facing the first substrate with a discharge space therebetween; a sealing layer located between the first substrate and the second substrate; and a buffer layer formed between the first substrate and the sealing layer to compensate the thermal stress of the first substrate and the sealing layer.Type: GrantFiled: April 23, 2004Date of Patent: August 18, 2009Assignee: LG Electronics Inc.Inventor: Young Joon Ahn
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Patent number: 7576488Abstract: Disclosed is a multi-typed plasma display panel for preventing internal penetration of a seal line by forming a barrier rib in a vertical direction, in a horizontal direction or in both directions. In the multi-typed plasma display panel, a barrier rib is formed according to a cross-section in a vertical direction, in a horizontal direction or in both directions so that a seal line of the cross-section is prevented from being penetrated internally. In the horizontal direction, an auxiliary barrier rib may be further formed outside the barrier rib. Additionally, a dielectric of the rear panel is removed as large as an area separated from the cross-section in a predetermined distance so that the seal line may be formed in a condition where a glass is exposed.Type: GrantFiled: December 24, 2003Date of Patent: August 18, 2009Assignee: Orion PDP Co., Ltd.Inventors: Gwon Jin Moon, Gwang Pyo Choi, Seok Joon Moon, Hea Sung Jang
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Patent number: 7576492Abstract: A plasma display panel including a first substrate and a second substrate opposing one another with a predetermined gap therebetween, address electrodes formed along a first direction on the first substrate, and barrier ribs mounted in the gap between the first and second substrates and defining a plurality of discharge cells. First electrodes and second electrodes are formed on the second substrate along a second direction, which crosses the first direction. The address electrodes include expanded segments with an enlarged width in areas corresponding to the discharge cells, and indented segments that are indented at areas corresponding to gaps between the first electrodes and the second electrodes.Type: GrantFiled: April 6, 2005Date of Patent: August 18, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Jeong-Nam Kim, Tae-Ho Lee, Yon-Goo Park, Min-Sun Yoo
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Publication number: 20090200942Abstract: A plasma display panel capable of reducing further a surface discharge voltage without additionally providing a process leading to cost increase, and contributing to the reduction in address discharge delay.Type: ApplicationFiled: July 26, 2005Publication date: August 13, 2009Inventors: Takashi Sasaki, Yuka Kobayashi
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Patent number: 7573200Abstract: An object of the present invention is to reduce power consumption in a plasma display panel (PDP) by reducing the discharge firing voltage, while suppressing the occurrence of discharge variability when the PDP is driven, as well as ensuring the wall-charge holding performance of a protective film surface. To achieve this, a front panel of a PDP of the present invention has a catalyst layer dispersed on a surface of display electrodes formed in stripes on one side of a glass substrate, and needle crystals composed of graphite formed to stand upright on the catalyst layer. The needle crystals form a phase-separated structure with the materials of a dielectric film and a protective film.Type: GrantFiled: November 10, 2004Date of Patent: August 11, 2009Assignee: Panasonic CorporationInventors: Shinichi Yamamoto, Mikihiko Nishitani, Yukihiro Morita
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Patent number: 7573198Abstract: A plasma display apparatus comprises a plasma display panel comprising an electrode, a drive board and a connection unit adhered to a terminal of the drive board and electrically connected to the electrode.Type: GrantFiled: July 5, 2006Date of Patent: August 11, 2009Assignee: LG Electronics Inc.Inventor: Tae Hwa Hwang
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Patent number: 7573202Abstract: A microdischarge device that includes one or more electrodes encapsulated in a nanoporous dielectric. The devices include a first electrode encapsulated in the nanoporous dielectric and a second electrode that may also be encapsulated with the dielectric. The electrodes are configured to ignite a microdischarge in a microcavity when an AC or a pulsed DC excitation potential is applied between the first and second electrodes. The devices include linear and planar arrays of microdischarge devices. The microcavities in the planar arrays may be selectively excited for display applications.Type: GrantFiled: October 4, 2004Date of Patent: August 11, 2009Assignee: The Board of Trustees of the University of IllinoisInventors: J. Gary Eden, Sung-Jin Park
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Patent number: 7569991Abstract: A plasma display panel and manufacturing process therefor, providing an improved barrier rib strength in an opposing discharge structure. The plasma display panel may include a front substrate and a rear substrate, address electrodes extending in a predetermined direction on the rear substrate, and a barrier rib layer disposed between the front and rear substrates for defining a plurality of discharge spaces. The barrier rib layer includes barrier rib members for defining the plurality of discharge spaces, and display electrodes forming opposing electrodes with the discharge spaces therebetween, with grooves formed in a direction crossing the address electrodes on the barrier rib members facing the front substrate, and inner surfaces of the grooves that are coated with display electrodes.Type: GrantFiled: January 31, 2006Date of Patent: August 4, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Yoshitaka Terao, Takashi Miyama, Yukika Yamada
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Patent number: 7567036Abstract: A crystalline MgO layer is provided in a position facing a discharge cell formed in a discharge space between the front and back substrates. The crystalline MgO layer includes magnesium oxide crystals caused to emit ultraviolet light with a peak wavelength of between 230 nm and 250 nm by the action of ultraviolet light emitted from xenon in a discharge gas. A phosphor layer emits visible light by being excited by the ultraviolet light emitted from the magnesium oxide layer and the ultraviolet light emitted from the discharge gas.Type: GrantFiled: March 18, 2005Date of Patent: July 28, 2009Assignee: Pioneer CorporationInventors: Atsushi Hirota, Lin Hai, Taro Naoi, Takeshi Sasaki
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Publication number: 20090184641Abstract: A plasma display panel (PDP) having improved impact resistance, the PDP including: a front substrate on which sustain electrodes are disposed at predetermined intervals; a front dielectric layer covering the sustain electrodes; a rear substrate that is disposed to face the front substrate, and on which address electrodes are disposed to cross the sustain electrodes; a rear dielectric layer covering the address electrodes; barrier ribs formed between the front substrate and the rear substrate, the barrier ribs defining discharge spaces; and phosphor layers formed in the discharge spaces, wherein the front dielectric layer has a Vickers hardness of 350 to 500 Hv.Type: ApplicationFiled: January 21, 2009Publication date: July 23, 2009Inventor: Sung-Hune Yoo
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Patent number: 7564188Abstract: A plasma display panel including a first substrate and a second substrate opposing each other, partition walls disposed between the first substrate and the second substrate and defining a plurality of discharge cells, pairs of first electrodes disposed at first side surfaces of the partition walls and opposing each other in the respective discharge cells, pairs of second electrodes disposed at second side surfaces of the partition walls and opposing each other in the respective discharge cells and extending in a direction intersecting the first electrodes, and a dielectric layer formed at the first side surfaces and the second side surfaces of the partition walls covering the first and the second electrodes. A convex portion of the dielectric layer covers at least one electrode.Type: GrantFiled: May 5, 2005Date of Patent: July 21, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Ik Kwon, Kyoung-Doo Kang
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Patent number: 7564187Abstract: A Plasma Display Panel (PDP) includes: a first substrate; a second substrate arranged parallel to the first substrate; first barrier ribs arranged between the first and second substrates and defining discharge cells with the first and second substrates; second barrier ribs arranged between the first and second substrates, defining the discharge cells with the first substrate, the second substrate, and the first barrier ribs and being wider than the first barrier ribs; first discharge electrodes arranged inside the first barrier ribs to surround the discharge cells; second discharge electrodes arranged inside the second barrier ribs to surround the discharge cells and separated from the first discharge electrodes; phosphor layers arranged closer to the first barrier ribs and arranged inside the discharge cells; and a discharge gas contained within the discharge cells.Type: GrantFiled: August 10, 2006Date of Patent: July 21, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-Doo Kang, Won-Ju Yi
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Publication number: 20090179568Abstract: A lower dielectric layer which increases internal light reflectivity, and a plasma display panel (PDP) including the lower dielectric layer. The lower dielectric layer includes a white pigment of which concentration increases along a direction of light emitted outward from the inside of the PDP to effectively increase the internal light reflectivity.Type: ApplicationFiled: December 19, 2008Publication date: July 16, 2009Inventor: Tae-Joung Kweon
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Publication number: 20090179569Abstract: A plasma display panel including: a front panel including a front substrate, a sustain electrode on a surface of the front substrate extending in one direction and including an X electrode and a Y electrode, and a first dielectric layer including an anodized material of the sustain electrode on a surface of the sustain electrode not contacting the front substrate; a rear panel facing the front panel, and including a rear substrate, an address electrode on one surface of the rear substrate facing the front substrate, and a second dielectric layer covering the address electrode; and a barrier rib partitioning a plurality of discharge cells between the front panel and the rear panel in a pattern.Type: ApplicationFiled: December 29, 2008Publication date: July 16, 2009Inventors: Tae-Seung Cho, Young-Do Choi, Jae-Ik Kwon, Byoung-Min Chun, Won-Yi Lee, Kwang-Sik Lee
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Patent number: 7560864Abstract: A plasma display panel including slanted electrodes is disclosed. In one embodiment, the plasma display panel includes: i) a front substrate, ii) a rear substrate facing the front substrate, iii) a dielectric wall interposed between the front and rear substrates to define discharge cells together with the front and rear substrates, iv) discharge electrodes including first and second discharge electrodes slanted at predetermined angles and embedded in the dielectric wall, wherein the first and second discharge electrodes surround on a diagonal, discharge corners of a discharge cell, respectively, and v) red, green, and blue phosphor layers formed in the discharge cells. Since the discharge electrodes are slanted, degradation of the phosphor layers due to the collision of ions during the discharge can be minimized. Therefore, the lifetime of the panel can be prolonged.Type: GrantFiled: August 23, 2005Date of Patent: July 14, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Jung-Suk Song
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Patent number: 7557506Abstract: A Plasma Display Panel (PDP) that reduces a discharge voltage includes: a substrate; pairs of sustain electrodes arranged on the substrate; and a dielectric layer covering the pairs of sustain electrodes, the dielectric layer having grooves and the grooves having a plurality of protrusions arranged thereon.Type: GrantFiled: August 29, 2006Date of Patent: July 7, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Hyun Kim, Kyoung-Doo Kang, Se-Jong Kim, Yun-Hee Kim, Hyun Soh, Jin-Won Han
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Patent number: 7557508Abstract: A plasma display panel plasma display panel includes a first substrate, a second substrate facing the first substrate, address electrodes between the first and second substrates, barrier ribs between the first and the second substrates, the barrier ribs defining discharge cells, phosphor in each discharge cell and first and second opaque electrodes between the first and second substrates, the first and second opaque electrodes extending orthogonally to the address electrodes. Each opaque electrode includes a first layer and a second layer, the first layer being narrower than the second layer. Each discharge cell is between a corresponding address electrode on a first side and a corresponding pair of first and second opaque electrodes on a second side, opposite the first side.Type: GrantFiled: November 15, 2005Date of Patent: July 7, 2009Assignee: Samsung SDI Co. Ltd.Inventors: Ki-Jung Kim, Tae-Kyoung Kang
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Patent number: 7554268Abstract: Provided is a plasma display panel including a first substrate and a second substrate facing each other, barrier ribs that define a plurality of discharge cells, address electrodes which extend across the discharge cells and a plurality of pairs of sustain electrodes which cross the address electrodes and generate a sustain discharge. Two sustain electrodes of a sustain electrode pair each include two or more electrode portions and connection portions for electrically coupling the electrode portions. Each electrode portion has a line width B, and each connection portion has a line width S. The ratio of the line width S to the line width B is 0.20?S/B?0.92 to balance improved brightness with reduced power consumption for the plasma display panel. Further, the sustain electrode can be manufactured so the electrode portions are formed integrally with the connection portions to facilitate ease of manufacturing.Type: GrantFiled: May 15, 2006Date of Patent: June 30, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Dong-Hyun Kim
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Patent number: 7554270Abstract: A composition for a dielectric of a plasma display panel laminating a plurality of layers, includes: a lower layer composition containing inorganic powder and a binder resin, an upper layer composition containing inorganic powder, a binder resin, a photopolymerizable monomer and a photopolymerization initiator, the upper layer composition being provided above the lower layer, and an intermediate layer composition containing a thermally decomposable resin, the intermediate layer composition being provided between the lower layer and the upper layer.Type: GrantFiled: May 17, 2004Date of Patent: June 30, 2009Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Hitoshi Setsuda, Akira Kumazawa, Kiminori Oshio, Hiroyuki Obiya
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Patent number: 7550923Abstract: The invention relates to a faceplate including a dielectric layer and a protection layer. According to the invention, in order to re-scatter the UV radiation, the interface between the dielectric layer and the protection layer is structured such that it has an average roughness, which is included in the wavelength domain of said radiation, of between 130 and 20 nm in particular. Such re-scattering means are significantly more economical and effective than previous means. The aforementioned roughness can be obtained by performing an abrasion operation on the surface of the dielectric layer.Type: GrantFiled: October 21, 2002Date of Patent: June 23, 2009Assignee: Thomson LicensingInventors: Jean-Pierre Creusot, Yvan Raverdy
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Publication number: 20090134795Abstract: A plasma display panel (PDP) for preventing (or reducing) a chemical reaction of Na2O of a sodalime glass substrate and a metal of an electrode. The PDP includes first and second substrates, a barrier rib, a phosphor layer, an address electrode, and a display electrode. The first and second substrates are provided to face each other, the barrier rib is provided between the first and second substrates to partition discharge cells, and the phosphor layer is formed in each discharge cell. The address electrode is between the first and second substrate and extending in a first direction. The display electrode is between the first and second substrates and extending in a second direction crossing the first direction. Here, the first substrate and/or the second substrate is a sodalime glass substrate including Na2O, and a frit is between the sodalime glass substrate and the address electrode and/or the display electrode.Type: ApplicationFiled: May 7, 2008Publication date: May 28, 2009Inventor: Tae-Joung Kweon
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Patent number: 7538493Abstract: A plasma display panel including a dielectric layer, which covers X and Y electrodes and has a groove interposed between the X and Y electrode. The growth direction of crystals of a protecting layer disposed on the groove where discharge is focused is optimized to increase the expected life of the plasma display panel and to increase the amount of discharge. The plasma display panel includes a front substrate and a rear substrate facing each other, discharge cells interposed between the front substrate and the rear substrate, X and Y electrodes extending parallel to each other, and a dielectric layer that covers the X and Y electrodes and has a groove with an inclined surface interposed between the electrodes. A (1,1,1) growth direction of the crystals corresponding to the inclined surface of the groove is perpendicular to the inclined surface of the groove.Type: GrantFiled: March 9, 2006Date of Patent: May 26, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Se-Jong Kim
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Publication number: 20090128036Abstract: A plasma display panel (PDP) having high driving efficiency obtained by improving an address voltage margin; having high image quality obtained by removing noisy brightness such as discharge light generated when an address discharge occurs or background light; and suitable for an image display with high efficiency and high resolution. The PDP includes a plurality of first barrier ribs between a first substrate and a second substrate, the first barrier ribs defining a plurality of unit cells; and a plurality of second barrier ribs dividing each of the unit cells into a main discharge space and an auxiliary discharge space. A row of the auxiliary discharge spaces is adjacent and between two rows of the main discharge spaces. The PDP also includes a phosphor layer in the main discharge spaces; and a plurality of grooves in the second barrier ribs between the main discharge spaces and the auxiliary discharge spaces.Type: ApplicationFiled: November 12, 2008Publication date: May 21, 2009Inventor: Jung-Min Kim
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Patent number: 7535178Abstract: A plasma display panel has the front glass substrate and the back glass substrate which are placed opposite each other on either side of a discharge space, row electrode pairs formed on the front glass substrate, a dielectric layer covering the row electrode pairs, and a protective layer covering the dielectric layer. The protective layer has a structure of a lamination of a thin-film MgO layer by either vapor deposition or spattering and a MgO layer including magnesium oxide crystals causing a cathode-luminescence emission having a peak within a wavelength range of 200 nm to 300 nm upon excitation by an electron beam. A ternary discharge gas including neon, xenon and helium fills the discharge space.Type: GrantFiled: September 9, 2005Date of Patent: May 19, 2009Assignee: Pioneer CorporationInventors: Masahiko Ushizawa, Takashi Ohtoh, Kunimoto Tsuchiya
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Patent number: 7535177Abstract: A plasma display panel having a plurality of pixels, each pixel having at least three sub-pixels, each sub-pixel containing at least two discharge cells. The plasma display panel includes a transparent front panel, a back panel positioned to be separate from and parallel to the front panel, first barrier ribs located between the front panel and the back panel and defining discharge cells together with the front panel and the back panel, the first barrier ribs being made out of a dielectric material, front discharge electrodes located within the first barrier ribs and surrounding the discharge cells, back discharge electrodes also located within the first barrier ribs and also surrounding the discharge cells and being separated from the front discharge electrodes, phosphor layers located within the discharge cells, respectively, and a discharge gas present within the discharge cells.Type: GrantFiled: April 18, 2005Date of Patent: May 19, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Woo-Tae Kim, Kyoung-Doo Kang, Se-Jong Kim
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Patent number: 7531961Abstract: Phosphor layers (110G, 110B, and 110R) are made of a combination of: blue and green phosphors that are positively charged on their surfaces and baked in an oxygen-nitrogen atmosphere to reduce oxygen vacancy, and that have a ?-alumina crystal structure; and a red phosphor made of an yttrium oxide compound. Uniformly forming such phosphor layers on the wall surfaces of barrier ribs (109) provides equal charge characteristics of the phosphors of respective colors, reduces oxygen vacancy in the phosphors, and inhibits adsorption of various gases in the panel production process. This can stabilize the discharge characteristics and prevent luminance degradation at driving the panel.Type: GrantFiled: September 26, 2003Date of Patent: May 12, 2009Assignee: Panasonic CorporationInventors: Masaki Aoki, Hiroyuki Kawamura, Kazuhiko Sugimoto, Hiroshi Setoguchi, Junichi Hibino, Yoshinori Tanaka
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Patent number: 7531963Abstract: An insulation layer covering segment layers and a plurality of row electrodes arranged on a first substrate has, on its surface, first projections and second projections. The first projections have a shape and a height corresponding to those of the row electrode, and contacts partitions disposed on a second substrate. The second projections have a shape and a height corresponding to those of the segment layer. The partitions and the second projections constitute discharge barriers between columns, which prevents discharge interference from occurring between cells along the row electrodes.Type: GrantFiled: February 21, 2006Date of Patent: May 12, 2009Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Takashi Sasaki, Takahiro Takamori
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Publication number: 20090115335Abstract: A plasma display panel of the present invention includes a display electrode (5) and an address electrode (10) that cross each other. At least one selected from the display electrode (5) and the address electrode (10) is covered with a first dielectric layer (6) containing first glass. The first glass contains Bi2O3, and the electrode that is covered with the first dielectric layer (6) contains at least one selected from the group consisting of silver and copper. The first glass further contains 0 to 4 wt % of MoO3 and 0 to 4 wt % of WO3, and the total of the contents of MoO3 and WO3 in the first glass is in a range of 0.1 to 8 wt %.Type: ApplicationFiled: June 15, 2007Publication date: May 7, 2009Applicant: PANASONIC CORPORATIONInventors: Shinya Hasegawa, Osamu Inoue, Akira Kawase, Yasuhiko Nakada, Kazuhiro Yokota, Tsutomu Koshizuka, Seiji Toyoda
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Patent number: 7528548Abstract: A crystalline magnesium oxide layer, including magnesium oxide crystals causing a cathode-luminescence emission having a peak within a wavelength range of 200 nm to 300 nm upon excitation by an electron beam, is provided between the front glass substrate and the back glass substrate, facing the discharge cells. The phosphor layer of any one of red, green and blue colors has a discharge timing adjusting function for giving rise to an approximate match between a timing of a discharge initiated in the green discharge cell and a timing of a discharge initiated in the red or blue discharge cell.Type: GrantFiled: April 11, 2006Date of Patent: May 5, 2009Assignee: Pioneer CorporationInventors: Mario Amatsuchi, Atsushi Hirota
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Publication number: 20090102381Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate, a phosphor layer and a barrier rib between the front and rear substrates, and a discharge gas filled between the front and rear substrates. The phosphor layer includes a phosphor material and an additive material. The additive material includes at least one of magnesium oxide (MgO), zinc oxide (ZnO), silicon oxide (SiO2), titanium oxide (TiO2), yttrium oxide (Y2O3), aluminum oxide (Al2O3), lanthanum oxide (La2O3), europium oxide (EuO), cobalt oxide, iron oxide, or CNT (carbon nano tube). A pressure of the discharge gas lies substantially in a range between 400 torr and 500 torr.Type: ApplicationFiled: March 3, 2008Publication date: April 23, 2009Applicant: LG ELECTRONICS INC.Inventors: Heekwon KIM, Byunghyun KIM
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Patent number: 7521868Abstract: A plasma display panel includes a first substrate and a second substrate disposed opposite to each other and having a plurality of discharge spaces therebetween forming a display region for implementing images. Display electrodes are provided in lateral sides of the discharge spaces and extend in a first direction. Address electrodes extend in a second direction crossing the display electrodes. A dummy cell region and a frit region are provided outside of the display region. The frit region includes a first frit formed on a periphery of the first substrate, a second frit formed on a periphery of the second substrate, a dielectric layer disposed between the first substrate and the second substrate and covering the display electrodes, and electrode terminals drawn out from the display electrodes to an edge of the first substrate and the second substrate.Type: GrantFiled: March 30, 2006Date of Patent: April 21, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-Doo Kang, Won-Ju Yi, Se-Jong Kim, Hun-Suk Yoo, Seok-Gyun Woo
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Patent number: 7521867Abstract: A plasma display panel (PDP) not only capable of reducing a discharge start voltage but also of making the discharge start voltage uniform in each cell without being adversely affected by the variations in the distance between electrodes caused during manufacture has been disclosed, wherein a pair of electrodes, provided in each of a plurality of cells respectively in which a discharge is caused to occur selectively for display in a discharge space, has facing edges, respectively, provided for discharge and the distance between the facing edges changes when viewed from a direction perpendicular to a substrate and the edges in each of the plurality of cells have substantially the same shape.Type: GrantFiled: September 9, 2004Date of Patent: April 21, 2009Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Takashi Sasaki, Masayuki Shibata, Takahiro Takamori, Hideki Harada
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Patent number: 7518311Abstract: An exemplary plasma display panel according to one embodiment includes a first substrate and a second substrate, a barrier rib, address electrodes, a phosphor layer, display electrodes, and a first dielectric layer. The first and second substrates are disposed facing each other. The barrier rib is disposed between the first and second substrates and forms discharge cells. The address electrode is formed in one direction on the first substrate corresponding to the discharge cells. The phosphor layer is formed in each discharge cell. A display electrode is formed in a direction that crosses the address electrode on the second substrate. A first dielectric layer covers the address electrode. The first dielectric layer is formed, in the direction of the length of the address electrode, up to at least one of the edges of the first substrate.Type: GrantFiled: July 13, 2005Date of Patent: April 14, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Chong-Gi Hong, Tae-Kyoung Kang
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Patent number: 7518232Abstract: The present invention relates to a plasma display panel (PDP) that includes a first substrate, an address electrode formed on the first substrate, a dielectric layer formed on the first substrate and covering the address electrode, a barrier rib formed on the dielectric layer, a second substrate, a display electrode formed on the second substrate, a dielectric layer formed on the second substrate and covering the display electrode, and a protection layer formed on the dielectric layer of the second substrate. Discharge cells are defined by barrier ribs, and a phosphor layer is formed in the discharge cells. Barrier ribs contains inorganic adsorbent. When a PDP is operated for a long time, residual carbon or water is generated inside discharge cells, and thereby contaminates a discharge gas contained in the discharge cells. The inorganic adsorbent included in the barrier ribs absorb the residual carbon or water improving efficiency and lifespan of the PDP.Type: GrantFiled: November 9, 2006Date of Patent: April 14, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Young-Gil Yoo
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Patent number: 7518312Abstract: A Plasma Display Panel (PDP) includes a plurality of substrates, dielectric walls, X-electrodes, Y-electrodes, and red, green, and blue phosphor layers. The substrates include front and rear substrates disposed opposite each other. The dielectric walls are disposed between the front and rear substrates to define discharge cells along with the substrates. Each of the X-electrodes includes first and second X-electrodes, separately disposed along a circumference of the discharge cell, and buried in the dielectric wall. Each of the Y-electrodes includes first and second Y-electrodes, separately disposed along the circumference of the discharge cell, and buried in the dielectric wall. Red, green, and blue phosphor layers are coated in the discharge cells. At least one of the X- and Y-electrodes, which starts a main discharge, has a different area from the other electrodes.Type: GrantFiled: February 14, 2006Date of Patent: April 14, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Tae-Joung Kweon
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Patent number: 7514870Abstract: A plasma display panel and a method and apparatus for driving the same are provided that are capable of preventing miss-writing and improving discharge and light-emission efficiencies. In the panel, an upper substrate and a lower substrate are opposed to each other and have a plurality of discharge cells therebetween. A first upper electrode group is formed on the upper substrate and includes at least one electrode. A second upper electrode group is formed on the upper substrate in such a manner to be adjacent to the first upper electrode group and includes at least one electrode having a different width from the first upper electrode group. A data electrode is provided on the lower substrate in such a manner to be perpendicular to the first and second upper electrode groups.Type: GrantFiled: October 16, 2006Date of Patent: April 7, 2009Assignee: LG Electronics Inc.Inventors: Eun-Cheol Lee, Jae-Sung Kim, Young-Joon Ahn, Seok Dong Kang, Young-Kyo Shin, Sung-Yong Ahn, Song-Won Chi, Jae-Hong Lee, Tae-Wan Choi, Jeong-Pil Choi, Tae-Hyung Kim, Geun-Soo Lim
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Patent number: 7511428Abstract: A plasma display panel having a dielectric protection layer (14) including MgO and phosphorlayers (25R, 25G, 25B) for red, green, and blue respectively wherein none of the phosphor layers contain any member of the group consisting of Group IV elements, transition metals, alkali metals, and alkaline earth metals, or wherein all the phosphor layers each contain a specific amount of one or more members of the group consisting of Group IV group elements, transition metals, alkali metals and alkaline earth metals. In such a plasma display panel, changes over the course of time in the impedance of the dielectric protection layer (14) is suppressed, and the phosphor layers are uniform with respect to the directional characteristics of the changes of the impedances, which results in suppression of occurrence of black noise.Type: GrantFiled: October 10, 2003Date of Patent: March 31, 2009Assignee: Panasonic CorporationInventors: Hikaru Nishitani, Yukihiro Morita, Masatoshi Kitagawa
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Patent number: 7511426Abstract: A preferred embodiment microplasma device includes first and second substrates. An electrode array is disposed on the first substrate. Cavities are formed in the second substrate by laser micromachining, etching, or by chemical (wet or dry) etching and the second substrate is overlaid on the electrode array. The inter-electrode spacing and electrode width are set so that each cavity has at least one pair of electrodes underneath it to excite a microplasma discharge in the cavity. A need to precisely register the two substrates is avoided.Type: GrantFiled: November 8, 2004Date of Patent: March 31, 2009Assignee: The Board of Trustees of the University of IllinoisInventors: J. Gary Eden, Sung-O Kim
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Patent number: 7508138Abstract: Disclosed is a front substrate of a plasma display panel and fabricating method thereof, by which color temperature, color purity, and contrast of PDP are enhanced. The present invention includes an upper dielectric layer containing a colorant therein. And, the present invention includes the step of forming an upper dielectric layer having a colorant added thereto.Type: GrantFiled: December 30, 2003Date of Patent: March 24, 2009Assignee: LG Electronics Inc.Inventor: Sung Wook Lee
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Patent number: 7508135Abstract: A plasma display panel (PDP) that has a front substrate, a rear substrate arranged opposite to the front substrate, closed-type front barrier ribs arranged between the front substrate and the rear substrate and formed of a dielectric material, the front barrier ribs defining discharge cells together with the front and rear substrates, front and rear discharge electrodes arranged within the front barrier ribs and surrounding the discharge cells and spaced apart from each other, phosphor layers arranged within the discharge cells and a discharge gas injected into discharge cells.Type: GrantFiled: April 14, 2005Date of Patent: March 24, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-Doo Kang, Won-Ju Yi, Jae-Ik Kwon
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Patent number: 7508139Abstract: A novel design for a plasma display panel where a dielectric grid structure is formed between the front and the rear substrate. Some or all of the electrodes are formed within the dielectric grid structure. The electrodes surround individual discharge cells and thus produce a more efficient discharge. A resistive element is built into the electrodes to reduce current and to reduce power consumption. The sustain discharge electrodes, made of X and Y electrodes each are made of at least two separate electrode lines, all four electrodes being formed within the dielectric grid. By such a design, power consumption is reduced and light emission efficiency is improved.Type: GrantFiled: March 25, 2005Date of Patent: March 24, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Jae-Ik Kwon
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Patent number: 7504777Abstract: A plasma display panel (PDP) having a simple manufacturing process, and improved discharge stability, brightness, and light emission efficiency is disclosed. In one embodiment, the PDP includes i) an upper substrate and a lower substrate facing each other, ii) a plurality of barrier ribs disposed between the upper substrate and the lower substrate to define a plurality of discharge cells together with the upper substrate and the lower substrate, iii) at least one pair of discharge electrodes that generate a discharge and extend across the discharge cells consecutively disposed in one direction, iv) a plurality of address electrodes disposed to cross the discharge electrodes across the discharge cells consecutively disposed in another direction v) an upper dielectric layer and a lower dielectric layer respectively covering at least one pair of discharge electrodes and the address electrodes; a fluorescent layer disposed in the discharge cells, and vi) a discharge gas filled in the discharge cells.Type: GrantFiled: July 27, 2005Date of Patent: March 17, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Tae-Kyoung Kang
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Patent number: 7504775Abstract: A Plasma Display Panel (PDP) has a high aperture ratio of a discharge cell, a high light transmittance, and a high luminous efficiency and a stable and efficient discharge occurs uniformly at a low driving voltage on inner sidewalls of the discharge cell and concentrates in the center of the discharge cell.Type: GrantFiled: April 29, 2005Date of Patent: March 17, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Su-Bin Song, Kyoung-Doo Kang, Jun-Yong Park, Won-Ju Yi
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Patent number: 7501762Abstract: There are provided a PDP having a higher luminous efficiency and a process for producing the same. In a plasma display panel filled with a discharge gas between a front plate and a rear plate opposed to each other, the front plate 100 comprises a glass substrate 1, electrodes 2 (transparent electrodes 2a and bus electrodes 2b) on the glass substrate 1, the first dielectric layer 4 covering the electrodes 2 and the glass substrate 1 and containing a fluorine atom, the second dielectric layer 5 covering the first dielectric layer 4 and containing a fluorine atom at a less amount than that in the first dielectric layer 4, and a protective layer 6 covering the second dielectric layer 5.Type: GrantFiled: July 12, 2006Date of Patent: March 10, 2009Assignee: Panasonic CorporationInventors: Tomohiro Okumura, Hiroyuki Yamakita, Noriyasu Echigo, Mitsuo Saitoh, Junko Asayama, Keisuke Okada
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Patent number: 7501763Abstract: Provided is a gas discharge display panel that exhibits a favorable display performance by maintaining a wall charge retaining power, controlling discharge delay within a range adequate for optimal image display, and reducing the discharge starting voltage at comparatively low cost. Also provided is a PDP that exhibits more reliability with enhanced display quality by further improving the secondary electron emission factor ? compared to conventional cases and lowering the discharge starting voltage to widen the driving margin. In addition, provided is a manufacturing method of a gas discharge display panel, by which the manufacturing cost lowers by reduction of the exhaustion time in the sealing exhaustion process, and by which the driving circuit cost is reduced. In the present invention, the protective layer contains, with respect to a MgO content of the protective layer, Si in a range of 20 mass ppm to 5000 mass ppm inclusive and H in a range of 300 mass ppm to 10000 mass ppm inclusive.Type: GrantFiled: April 7, 2005Date of Patent: March 10, 2009Assignee: Panasonic CorporationInventors: Jun Hashimoto, Masatoshi Kitagawa, Mikihiko Nishitani, Masaharu Terauchi, Shinichi Yamamoto
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Patent number: 7501758Abstract: The present invention relates to a plasma display apparatus. A bus electrode with high definition is formed and is formed on barrier ribs with a predetermined margin therebetween so that it is not overlapped with a discharge space. Therefore, the bus electrode does not infiltrate into a discharge space due to alignment error on upper/lower substrates. Furthermore, a transparent electrode in which at least one or more projections are formed from the bus electrode to the inside of a discharge space constitutes a scan electrode or a sustain electrode. A width of the transparent electrode is formed to be narrower than that of the bus electrode. Therefore, capacitance by the upper plate electrode can be reduced.Type: GrantFiled: March 9, 2006Date of Patent: March 10, 2009Assignee: LG Electronics Inc.Inventor: Sung Yong Ahn
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Patent number: 7501761Abstract: A plasma display panel comprising first and second substrates positioned substantially parallel to each other, facing each other and separated from each other by a predetermined distance is disclosed. A plurality of address electrodes are formed on the first substrate. A first dielectric layer covers the address electrodes on the first substrate. A plurality of barrier ribs having predetermined heights are mounted on the first dielectric layer, creating discharge spaces between the first and second substrates. Phosphor layers are formed within the discharge spaces. A plurality of discharge sustain electrodes are formed on the second substrate and are positioned perpendicular to the address electrodes on the first substrate. A second dielectric layer is formed on the second substrate covering the discharge sustain electrodes. A MgO protection layer having a surface roughness (Rms) ranging from about 60 to about 250 ? covers the second dielectric layer.Type: GrantFiled: May 19, 2005Date of Patent: March 10, 2009Assignee: Samsung SDI Co., Ltd.Inventor: Ki-Dong Kim
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Publication number: 20090058298Abstract: A plasma display panel and a method of fabricating the same are provided. The plasma display panel may include a first panel having address electrodes, a first dielectric layer, and phosphors all provided with a first and a second panel having transparent electrodes, bus electrodes exhibiting a color that is complementary to a color of the first panel, a second dielectric layer, and a protect layer all provided with a second substrate. The first panel may be coupled to the second panel with barriers positioned therebetween so as to define a plurality of discharge cells.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Inventors: Gun Young Hong, Eun A. Moon