With Dielectric Member Patents (Class 313/586)
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Patent number: 8072141Abstract: A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) and an external light shield sheet which absorbs external light incident upon the PDP. The external light shield sheet includes a base unit and a plurality of pattern units which are formed in the base unit. Each of the pattern units contains 2-10 weight % of light absorption particles having a size of 1 ?m or less. Since the external light shield sheet which can absorb and shield as much external light as possible is disposed at the front of the PDP, the plasma display device can effectively realize black images and improve bright room contrast.Type: GrantFiled: August 10, 2007Date of Patent: December 6, 2011Assignee: LG Electronics Inc.Inventors: Hong Rae Cha, Ji Hoon Sohn, Sam Je Cho, Woo Sung Jang, Woon Seo Shin
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Patent number: 8072143Abstract: A PDP and a manufacturing method for the PDP are provided, the PDP being capable of suppressing discharge delay due to improved discharge properties of a protective layer, and exhibiting superior image display performance despite having a high-definition cell structure. A magnesium oxide powder layer (16) is formed by distributing magnesium oxide particles (16a) flatly on a surface layer (8). Each of the magnesium oxide particles (16a) includes halogen atoms at and in a vicinity of the surface thereof. The magnesium oxide particles (16a) are manufactured such that the halogen atoms exist particularly at the surface of each of magnesium oxide particles (16a) through to a depth of 4 nm or less toward the core of each of the magnesium oxide particles (16a).Type: GrantFiled: March 12, 2008Date of Patent: December 6, 2011Assignee: Panasonic CorporationInventors: Hiroshi Asano, Takahiro Hamada, Seigo Shiraishi
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Patent number: 8057979Abstract: A photosensitive paste composition for forming a black layer on top of plasma display panel (PDP) barrier ribs includes black pigment nanoparticles for contrast enhancement and a cyclic acid anhydride for fundamentally preventing the gelation of the paste composition. The photosensitive paste composition prevents electrical or optical crosstalk between adjacent discharge cells to achieve better contrast. The fundamental prevention of the gelation of the paste composition permits the paste composition to have good storage stability.Type: GrantFiled: January 4, 2006Date of Patent: November 15, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Beom-Wook Lee, Dong-Hee Han, Sang-Wook Sin, Jin-Hwan Jeon
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Patent number: 8053986Abstract: A Plasma Display Panel (PDP) enabling optimization of a process to apply phosphor paste in order to achieve mass production using a jet nozzle method includes dummy areas structured to determine whether application conditions such as an ejecting pressure or the like are stable by measuring a depth of the applied layer after applying phosphor paste at a portion thereof in advance. The PDP includes: a first substrate and a second substrate opposing each other; address electrodes arranged on the first substrate; display electrodes arranged on the second substrate along a direction perpendicular to the address electrodes; barrier ribs arranged in a space between the first substrate and the second substrate to define a plurality of discharge cells, and phosphor layers arranged in each of the discharge cells.Type: GrantFiled: September 13, 2007Date of Patent: November 8, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Byung-Soo Jeon
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Patent number: 8053988Abstract: A plasma display device including a plasma display panel (PDP) having electrodes between two substrates, a chassis base attached to and configured to support the PDP, printed circuit boards (PCBs) configured to drive the electrodes, and a plurality of flexible printed circuits (FPCs) connected to the plurality of PCBs and the electrodes, wherein at least one PCB configured to drive the electrodes is attached to the PDP.Type: GrantFiled: April 16, 2008Date of Patent: November 8, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Ul-Je Kim
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Patent number: 8053989Abstract: A plasma display panel includes a front panel including a glass substrate, a display electrode formed thereon, a dielectric layer formed so as to cover the display electrode, and a protective layer formed on the dielectric layer; and a rear panel disposed facing the front panel so that discharge space is formed and including an address electrode formed in a direction intersecting the display electrode, and a barrier rib for partitioning the discharge space. The dielectric layer of the front panel contains bismuth oxide and calcium oxide without containing lead, and does not contain lead. The protective layer on the dielectric layer is formed by forming a base film on the second dielectric layer and attaching a plurality of crystal particles made of metal oxide to the base film so as to be distributed over an entire surface of the base film.Type: GrantFiled: February 25, 2009Date of Patent: November 8, 2011Assignee: Panasonic CorporationInventors: Koyo Sakamoto, Akira Shiokawa, Kaname Mizokami, Shinichiro Ishino, Hiroyuki Kado, Yoshinao Ooe, Hideji Kawarazaki, Kazuo Uetani
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Patent number: 8049423Abstract: A PDP includes a first substrate and a second substrate disposed to face each other, a plurality of address electrodes on the first substrate, a plurality of display electrodes on the second substrate, the display electrodes facing the first substrate and crossing the address electrodes, a first dielectric layer on the second substrate, the display electrodes being between the first dielectric layer and the second substrate, a first protective layer on the dielectric layer, the first protective layer including a low work function material, and a second protective layer on the first protective layer, the second protective layer including a high work function material and openings exposing the first protective layer in regions corresponding to the display electrodes.Type: GrantFiled: July 23, 2009Date of Patent: November 1, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Chun-Gyoo Lee, Seong-Chan Bae, Sang-Hun Jang, Yong-Shik Hwang
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Patent number: 8044590Abstract: To provide a plasma display panel of improving a discharge time-lag. A plasma display panel of the present invention is characterized in that it comprises a pair of substrate assemblies opposed to each other sandwiching discharge spaces formed to seal a discharge gas therein, wherein one of the pair of substrate assemblies comprises: display electrodes arranged on a substrate; a dielectric layer for covering the display electrodes; and a protective layer for covering the dielectric layer, and the protective layer is configured so that a plurality of MgO single crystals are adhered to an MgO film in such a manner that crystal orientations of the plurality of MgO single crystals are aligned in one direction.Type: GrantFiled: August 10, 2007Date of Patent: October 25, 2011Assignee: Hitachi, Ltd.Inventors: Yasuhito Yamaryo, Yoshiyuki Kaneko, Takahiro Ueno, Hiroyuki Tachihara, Atsuo Ohtomi
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Patent number: 8044589Abstract: A plasma display apparatus may include an external light shielding sheet attached to a front of a panel to absorb and shield externally incident light. Accordingly, a black image can be implemented close to an original color and bright and dark room contrast can be improved. Furthermore, thickness of the external light shielding sheet and height of a pattern unit have a given ratio in order to properly secure an aperture ratio of the external light shielding sheet. Accordingly, light emitted into the panel can transmit toward a user side.Type: GrantFiled: March 30, 2007Date of Patent: October 25, 2011Assignee: LG Electronics Inc.Inventors: Yu Park, Tae Deok Seo, Jun Hwan Ju
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Patent number: 8043653Abstract: In method of forming a dielectric film and a Plasma Display Panel (PDP) using the dielectric film, a paste is coated on a substrate and forms a dielectric film, and a lateral surface of a terminal portion of the dielectric film has a contact angle in a range of 30 to 80° with respect to a surface of the substrate. The PDP preferably includes: a first substrate and a second substrate facing each other and forming a discharge space; a plurality of pairs of sustain electrodes arranged on the first substrate; and a plurality of address electrodes arranged on the second substrate. At least one dielectric film is preferably arranged between the first substrate and the second substrate, and a lateral surface of a terminal portion of the dielectric film preferably has a contact angle in a range of 30 to 80° with respect to a surface of the first substrate.Type: GrantFiled: November 20, 2008Date of Patent: October 25, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Tae-Joung Kweon
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Patent number: 8040679Abstract: A display apparatus includes a display panel and a chassis base for supporting the display panel. The chassis base has a plurality of metallic plates on a common plane and an electrically insulating connector between edges of a pair of adjacent metallic plates.Type: GrantFiled: July 31, 2008Date of Patent: October 18, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Jae-Young Yeo
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Patent number: 8040062Abstract: Provided is an electroconductive laminate having a substrate and an electroconductive film formed on the substrate, wherein the electroconductive film has a multilayer structure having an oxide layer and a metal layer alternately laminated from the substrate side in a total layer number of (2n+1) (wherein n is an integer of at least 1); the oxide layer predominantly contains zinc oxide and titanium oxide having a refractive index of at least 2.3; the oxide layer has an atomic ratio of titanium to a total amount of titanium and zinc of 15-50 atomic %; and the metal layer predominantly contains silver or a silver alloy. Also provided is a process for producing the electroconductive laminate.Type: GrantFiled: May 30, 2007Date of Patent: October 18, 2011Assignee: Asahi Glass Company, LimitedInventors: Tamotsu Morimoto, Hideaki Miyazawa, Masahiro Fusen, Koichi Kanda, Susumu Nakagama
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Patent number: 8035302Abstract: A plasma display panel includes a front substrate providing an image display surface, a rear substrate facing the front substrate, barrier ribs arranged between the front and rear substrates to defining a plurality of discharge cells, a plurality of discharge electrodes extending across the discharge cells to generate a discharge, a front dielectric layer on the front substrate to bury the discharge electrodes, first phosphors coated within the discharge cells, second phosphors on upper surfaces of the barrier ribs and extending from the first phosphors, and a discharge gas filled into the discharge cells, wherein one or more of the front substrate, the front dielectric layer, and/or the barrier ribs is colored with a first color, and the first and second phosphors are colored with a second color.Type: GrantFiled: November 6, 2007Date of Patent: October 11, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Chong-Gi Hong
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Patent number: 8025543Abstract: A plasma display panel and the manufacturing method thereof. Forming partition wall structures on the back substrate of the paste display panel and forming the column-shaped protrusions at the positions corresponding to the cuts on the rib on the front substrate of the plasma display panel. The manufacturing process is simple and the alignment of the front and back substrate is easy. In addition, the size of the opening of the rib and the size of the cut can be easily adjusted according to the needs of the application during the manufacturing process.Type: GrantFiled: December 10, 2007Date of Patent: September 27, 2011Assignee: Au Optronics CorporationInventors: Chu-Shan Lin, Bing-Ming Ho, Tzu-Pang Chiang
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Patent number: 8022629Abstract: A plasma display panel having a dielectric with a stepped structure and a method for manufacturing the same are disclosed. The plasma display panel includes a first panel comprising a plurality of electrode pairs each including a scan electrode and a sustain electrode, and a dielectric layer formed over the electrode pairs, a second panel comprising a plurality of address electrodes arranged to cross the plurality of electrode pairs, and barrier ribs formed on the second substrate, to define discharge cells. The dielectric layer includes recesses respectively arranged between two electrodes arranged in each discharge cell and between two electrodes arranged adjacent to each other at opposite sides of each barrier rib.Type: GrantFiled: March 27, 2008Date of Patent: September 20, 2011Assignee: LG Electronics Inc.Inventor: Jong Rae Lim
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Patent number: 8022628Abstract: A plasma display panel has a front substrate including a plurality of display electrode pairs, a dielectric layer, and a protective layer, and a rear substrate including a plurality of data electrodes, a barrier rib, and a phosphor layer. The front substrate and rear substrate face each other so that the display electrode pairs and the data electrodes intersect, and a hydrogen-absorbing material containing palladium is disposed inside the plasma display panel.Type: GrantFiled: November 5, 2008Date of Patent: September 20, 2011Assignee: Panasonic CorporationInventors: Hiroshi Sogou, Shigeyuki Okumura
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Patent number: 8018154Abstract: A PDP can be driven at low voltage while having a charge retention property in a protection layer, and has favorable image display properties. Additionally, the PDP prevents the occurrence of discharge delay and realizes high-quality image display by performing favorable high-speed driving in a high definition PDP. To achieve this, a surface layer (8) is formed to a film thickness of 1 ?m in an oxygen atmosphere having an oxygen partial pressure of 0.025 Pa or more, the surface layer (8) is provided on a face of a dielectric layer (7) on a discharge space side. Furthermore, MgO particles (16) are dispersed on a surface of the surface layer (8). The surface layer (8) has the effects of protecting the dielectric layer (7) from ion bombardment during discharge, reducing the firing voltage, and preventing excessive electron loss. Also, the MgO particles (16) have a high initial electron emission property.Type: GrantFiled: April 27, 2007Date of Patent: September 13, 2011Assignee: Panasonic CorporationInventors: Yusuke Fukui, Takuji Tsujita, Jun Hashimoto, Hikaru Nishitani, Masaharu Terauchi, Mikihiko Nishitani
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Publication number: 20110215719Abstract: A technology for PDP, etc. by which discharge delay improving effects can be enhanced over the prior art. In a representative embodiment, there is provided a process for manufacturing a PDP with a magnesium oxide (MgO) crystal layer (priming particle emitting layer) exposed in discharge space, the MgO crystal layer comprised of powder (grains) of MgO crystal, which process comprises performing thermal treatment of the MgO crystal in an oxygenous atmosphere. In particular, the thermal treatment is performed so that the lower limit of grain diameter of MgO crystal is 50 nm or greater.Type: ApplicationFiled: September 21, 2007Publication date: September 8, 2011Inventor: Tomonari Misawa
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Patent number: 8013531Abstract: A plasma display panel is formed of front panel including at least display electrodes, dielectric layer that are formed on glass substrate, and a rear panel including electrodes, barrier ribs, and phosphor layers that are formed on a substrate. Dielectric layer is formed of multiple layers, i.e. lower dielectric layer and upper dielectric layer, and these layers are made of identical material to each other, and the material contains CaO and BaO, and the content of CaO is greater than that of BaO.Type: GrantFiled: November 19, 2008Date of Patent: September 6, 2011Assignee: Panasonic CorporationInventors: Kazuhiro Morioka, Yui Saitou, Akira Kawase, Shinsuke Yoshida, Tatsuo Mifune
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Patent number: 8013528Abstract: A plasma display member comprises a plurality of substantially stripe-shaped address electrodes (7) formed on a substrate (5), a dielectric layer (6) covering the address electrodes, main barrier ribs (8) located on the dielectric layer and formed substantially in parallel with the address electrodes, and auxiliary barrier ribs (9) formed orthogonal to the main barrier ribs. In the plasma display member, the pitch (Pt1) between the outermost main barrier rib of the main barrier ribs located in the non-display region on both sides in the lateral direction of a display region and the main barrier rib adjacent to the outermost main barrier rib is integer times the pitch (Pt2) between the main barrier ribs located in the display region, where the integer is two or more. In addition, exposure processing is performed a plurality of times by using a photomask having a specific shape, thereby making it possible to obtain a plasma display having a high display quality and a high productivity.Type: GrantFiled: January 29, 2009Date of Patent: September 6, 2011Assignee: Toray Industries, Inc.Inventors: Takafumi Otsu, Tetsuo Uchida
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Patent number: 8008861Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate facing the front substrate, a barrier rib that is positioned between the front substrate and the rear substrate and partitions a discharge cell, and a phosphor layer formed inside the discharge cell. The phosphor layer includes a first phosphor layer emitting first color light, a second phosphor layer emitting second color light, and a third phosphor layer emitting third color light. The first phosphor layer includes a first pigment. A thickness of the second phosphor layer is larger than a thickness of the first phosphor layer.Type: GrantFiled: July 1, 2008Date of Patent: August 30, 2011Assignee: LG Electronics Inc.Inventors: Heekwon Kim, Byungho Rhee, Jinyoung Kim, Gibum Lee
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Patent number: 8004191Abstract: A plasma display panel is disclosed. The plasma display panel has discharge cells which each have a range of widths between the first substrate and the second substrate. In addition, the discharge spaces are separated by non-discharge spaces having heights which are less than the heights of the discharge spaces.Type: GrantFiled: November 6, 2009Date of Patent: August 23, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Seung-Hyun Son, Sang-Ho Jeon, Hyeon-Seok Kim, Bok-Chun Yun, Sil-Keun Jeong, Eui-Jeong Hwang, Jung-Min Kim, Sung-Hyun Choi, Mun-Ho Nam, Hyun-Chul Kim, Sung-Soo Kim, Hye-Jung Lee, Sang-Hyuck Ahn, Sung-Hee Cho, Gi-Young Kim, Myoung-Sup Kim, Hyoung-Bin Park
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Patent number: 8004171Abstract: A plasma display panel including a front panel having a first substrate, a first electrode, a first dielectric layer and a protective layer wherein the first electrode is formed on the first substrate, the first dielectric layer is formed over the first substrate so as to cover the first electrode, and the protective layer is formed on the first dielectric layer, and a rear panel having a second substrate, a second electrode, a second dielectric layer and a phosphor layer wherein the second electrode is formed on the second substrate, the second dielectric layer is formed over the second substrate so as to cover the second electrode, the phosphor layer is formed on the second dielectric layer.Type: GrantFiled: May 9, 2008Date of Patent: August 23, 2011Assignee: Panasonic CorporationInventors: Hideki Yamashita, Hironobu Inoue, Motoi Hatanaka, Tomohiro Okumura
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Patent number: 7999473Abstract: A plasma display panel is disclosed. The plasma display panel has discharge cells which each have a range of widths between the first substrate and the second substrate. In addition, the discharge spaces are separated by non-discharge spaces having heights substantially the same as the heights of the discharge spaces.Type: GrantFiled: November 6, 2009Date of Patent: August 16, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Seung-Hyun Son, Sang-Ho Jeon, Hyeon-Seok Kim, Bok-Chun Yun, Sil-Keun Jeong, Eui-Jeong Hwang, Jung-Min Kim, Sung-Hyun Choi, Mun-Ho Nam, Hyun-Chul Kim, Sung-Soo Kim, Hye-Jung Lee, Sang-Hyuck Ahn, Sung-Hee Cho, Gi-Young Kim, Myoung-Sup Kim
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Patent number: 7994717Abstract: A high-luminance plasma display panel has a plurality of discharge cells including a phosphor film emitting visible rays by excitation caused by ultraviolet light generated by the discharge of a discharge gas. The phosphor film has at least two layers of a phosphor layer and a reflecting layer, and the phosphor layer is arranged closer to the discharge space side than the reflecting layer. A film thickness Wt of the phosphor film is 40 ?m or less, and a film thickness Wp of the phosphor layer, a particle diameter dp of a phosphor that is at least a part of components of the phosphor layer, a film thickness Wr of the reflecting layer, and a particle diameter dr of a reflecting material that is at least a part of components of the reflecting layer satisfy 2dp?Wp?5dp and 2dr?Wr?Wt?Wp.Type: GrantFiled: December 12, 2006Date of Patent: August 9, 2011Assignee: Hitachi, Ltd.Inventors: Kenji Okishiro, Keizo Suzuki, Tatsuya Miyake, Choichiro Okazaki
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Patent number: 7994719Abstract: A back face panel in a plasma display panel is provided with barrier-rib portions, fluorescent barrier-rib portions including a mixed material of a barrier-rib material and a phosphor material and formed on side faces thereof, and a phosphor portion including the phosphor material and formed in a manner so as to cover the fluorescent barrier-rib portions, and each of barrier ribs is formed by each barrier-rib portion and each fluorescent barrier-rib portion, while a phosphor layer is formed by each phosphor portion and each fluorescent barrier-rib portion.Type: GrantFiled: October 29, 2007Date of Patent: August 9, 2011Assignee: Panasonic CorporationInventors: Masahiro Muro, Tomohiro Okumura
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Patent number: 7990067Abstract: Row electrode pairs and column electrodes are provided between the front glass substrate and the back glass substrate. Magnesium oxide single-crystal particles, which are doped with aluminum and have characteristics of causing cathode luminescence having a peak within a wavelength range of 200 nm to 300 nm upon excitation by application of electron beams, are disposed in a position facing the discharge cells, and form part of a protective layer for a dielectric layer overlying the row electrodes and/or phosphor layers.Type: GrantFiled: October 16, 2007Date of Patent: August 2, 2011Assignee: Panasonic CorporationInventors: Taro Naoi, Hai Lin
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Patent number: 7986097Abstract: A PDP includes a first substrate and a second substrate facing each other, a plurality of first discharge electrodes on the first substrate, a first dielectric layer covering the first discharge electrodes, a plurality of second discharge electrodes on the second substrate and intersecting the first discharge electrodes, a second dielectric layer covering the second discharge electrodes, and a sealing material between the first substrate and the second substrate, wherein an absolute value of thermal expansion coefficient difference between the second dielectric layer and the sealing material is less than or equal to 13×10?7/° C.Type: GrantFiled: October 23, 2009Date of Patent: July 26, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Tae-Joung Kweon, Sung-Hune Yoo
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Patent number: 7977882Abstract: A PDP is equipped with row electrode pairs deposited on the inner face of a front glass substrate and a dielectric layer covering the row electrode pairs. A discharge space defined between the front glass substrate and the back glass substrate is filled with a discharge gas. The dielectric layer has a laminated structure made up of a first dielectric layer formed of a smaller nano-particle silica film including silica particles of a particle diameter of 10 nm to 25 nm, and a second dielectric layer formed of a larger nano-particle silica film including silica particles of a particle diameter of 25 nm to 40 nm.Type: GrantFiled: May 21, 2008Date of Patent: July 12, 2011Assignee: Panasonic CorporationInventors: Takeru Okada, Kenji Kawai
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Patent number: 7977879Abstract: A plasma display panel is disclosed. The plasma display panel includes a first substrate and a second substrate positioned adjacent to each other, a first barrier rib positioned between the first substrate and the second substrate and partitioning a discharge area, a sealing portion attaching the first substrate to the second substrate, and an auxiliary barrier rib. The auxiliary barrier rib may be spaced apart from the sealing portion with a predetermined distance therebetween, extended from the first barrier rib, and may include a portion with a height lower than a height of the first barrier rib positioned in the discharge area.Type: GrantFiled: July 23, 2008Date of Patent: July 12, 2011Assignee: LG Electronics Inc.Inventor: Gijin Kwon
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Patent number: 7977881Abstract: A plasma display panel is provided. The plasma display panel includes a front substrate including an upper dielectric layer, a rear substrate including a lower dielectric layer, and a seal layer between the front substrate and the rear substrate. A length of a longer side of the front substrate is longer than a length of a longer side of the rear substrate, and a length of a shorter side of the front substrate is shorter than a length of a shorter side of the rear substrate. An interval between an end of the front substrate and an end of the upper dielectric layer in a direction crossing the longer side of the front substrate is less than an interval between an end of the front substrate and an end of the upper dielectric layer in a direction crossing the shorter side of the front substrate.Type: GrantFiled: December 24, 2008Date of Patent: July 12, 2011Assignee: LG Electronics Inc.Inventor: Jaeyoung Oh
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Patent number: 7969093Abstract: A plasma display panel and a manufacturing method thereof are disclosed. The panel includes a substrate having a plurality of discharge cells, and barrier ribs defining the discharge cells, the barrier ribs contain carbon in an amount of 0.1 to 10% by weight.Type: GrantFiled: October 5, 2007Date of Patent: June 28, 2011Assignee: LG Electronics Inc.Inventors: Jin Woo Park, Gi Jin Kwon, Yoon Kwan Lee, Kwon Hue Son
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Patent number: 7965041Abstract: A plasma display panel is formed of a front panel including display electrodes, a dielectric layer, and a protective layer that are formed on a glass substrate, and a rear panel including electrodes, barrier ribs, and phosphor layers that are formed on a substrate. The front panel and the rear panel are faced with 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 CaO and BaO, and the content expressed in mole % of CaO is greater than that of BaO.Type: GrantFiled: August 4, 2008Date of Patent: June 21, 2011Assignee: Panasonic CorporationInventors: Akira Kawase, Kazuhiro Morioka, Yui Saitou, Shinsuke Yoshida, Tatsuo Mifune
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Patent number: 7965040Abstract: Each of the red, green and blue column electrodes has widened portions each having a row-direction width larger than that of the other portions. Each of the widened portions faces a head portion of each of the transparent electrodes of a pair of row electrodes constituting each row electrode pair. The widened portion of the green column electrode facing the green discharge cell provided with the green phosphor layer is located in a different position in the column direction from a position of each of the widened portions of the red and blue column electrodes respectively facing the red and blue discharge cells respectively provided with the red and blue phosphor layers.Type: GrantFiled: May 12, 2008Date of Patent: June 21, 2011Assignee: Panasonic CorporationInventors: Shingo Iwasaki, Yoshihiko Kamo, Jiro Fujimori
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Patent number: 7956540Abstract: A PDP (101) with a reduced discharge inception voltage and discharge sustaining voltage for improving luminous efficiency has at least a pair of substrates (110 and 111) that are disposed in opposition to sandwich a discharge space therebetween. At least a portion of at least one of the substrates has two or more display electrode pairs (104) that include narrow bus electrodes (159 and 169), a dielectric layer (107) formed so as to cover the display electrode pairs (104), and a protective layer (108) formed so as to cover the dielectric layer (107). The dielectric layer (107) has a dense film structure with a dielectric breakdown voltage of 1.0×106 [V/cm] to 1.0×107 [V/cm].Type: GrantFiled: August 11, 2005Date of Patent: June 7, 2011Assignee: Panasonic CorporationInventors: Hiroyuki Yamakita, Masatoshi Kitagawa, Mikihiko Nishitani
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Patent number: 7956541Abstract: A plasma display panel is formed of a front panel including display electrodes, a dielectric layer, and a protective layer that are formed on a glass substrate, and a rear panel including electrodes, barrier ribs, and phosphor layers that are formed on a substrate. The front panel and the rear panel are faced with 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 two kinds of R2O, where R is selected from the group consisting of Li, Na, and K.Type: GrantFiled: August 4, 2008Date of Patent: June 7, 2011Assignee: Panasonic CorporationInventors: Kazuhiro Morioka, Akira Kawase, Yui Saitou, Shinsuke Yoshida, Tatsuo Mifune
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Patent number: 7952278Abstract: A protective layer of a plasma display panel includes smoky magnesium oxide, the smoky magnesium oxide having single crystal magnesium oxide with a plurality of cavities therein.Type: GrantFiled: December 30, 2008Date of Patent: May 31, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Min-Suk Lee, Jong-Seo Choi, Matulevich Yuri, Suk-Ki Kim, Young-Su Kim, Deok-Hyun Kim, Hee-Young Chu, Soon-Sung Suh
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Patent number: 7948181Abstract: A plasma display panel includes a front substrate having a first color, a rear substrate facing the front substrate, barrier ribs disposed between the front and rear substrates and defining discharge cells, the barrier ribs having a second color, phosphor layers disposed in the discharge cells, display electrodes arranged on the front substrate and extending in a first direction, the discharge electrodes corresponding to the discharge cells, a dielectric layer disposed on the front substrate and covering the display electrodes, the dielectric layer having a third color, address electrodes arranged on the rear substrate and extending in a second direction crossing the first direction, the address electrodes corresponding to the discharge cells, and a filter disposed on the front substrate and having a fourth color. The first through fourth colors realize a subtractive color mixture through a complementary coloring with each other.Type: GrantFiled: February 22, 2008Date of Patent: May 24, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Chong-Gi Hong, Young-Soo Seo, Yong-Jun Kim, Ki-Jong Eom
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Patent number: 7940006Abstract: A plasma display device includes: a plasma display panel; a front glass; a conductive filter attached to a front surface or a back surface of the front glass; a back cover; and a plurality of glass pressing pieces each of which presses a corresponding one of four sides of the front glass and makes the conductive filter and the back cover be connected electrically. Among the plurality of glass pressing pieces, glass pressing pieces disposed on one pair of opposite sides of the front glass are electrically connected with the conductive filter at the front surface side thereof, and glass pressing pieces disposed on the other pair of opposite sides of the front glass are electrically connected with the conductive filter at the back surface side thereof.Type: GrantFiled: January 21, 2009Date of Patent: May 10, 2011Assignee: Panasonic CorporationInventors: Kei Ichikawa, Masaaki Ofuji, Seiji Hamada
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Patent number: 7936127Abstract: A plasma display apparatus is provided that includes a front substrate, a first electrode, a second electrode and a dielectric layer formed on the front substrate, a rear substrate faced with the front substrate, a third electrode formed on the rear substrate, and a barrier rib which is formed on the rear substrate and partitions discharge cells, wherein at least one of the first electrode and the second electrode is formed with one layer, and the width of at least one of barrier ribs which partitions the discharge cells in the outside of an effective display region is wider than the width of barrier ribs which partition the discharge cells in the inside of the effective display region. The plasma display apparatus does not include a transparent electrode consisting of ITO, reducing the manufacturing cost of the plasma display panel.Type: GrantFiled: November 8, 2006Date of Patent: May 3, 2011Assignee: LG Electronics Inc.Inventors: Seong Nam Ryu, Woo Gon Jeon, Sang Min Hong, Woo Tae Kim, Kyung A Kang, Jeong Hyun Hahm, Jae Sung Kim
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Patent number: 7932676Abstract: The present invention provides a plasma display panel (PDP) with a protective film improved so as to achieve a lower discharge starting voltage. A surface portion of the protective film 16 substantially is composed of magnesium (Mg), aluminum (Al), nitrogen (N), and oxygen (O). The protective film 16 is formed so that in the surface portion of the protective film 16, a ratio of the number of atoms of the aluminum to a total of the number of atoms of the magnesium and the number of atoms of the aluminum is at least 2.1% but not more than 66.5%, a ratio of the number of atoms of the nitrogen to a total of the number of atoms of the nitrogen and the number of atoms of the oxygen is at least 1.2% but not more than 17.2%, and a ratio of the total of the number of atoms of the nitrogen and the number of atoms of the oxygen to the total of the number of atoms of the magnesium and the number of atoms of the aluminum is at least 1.0 but not more than 1.35.Type: GrantFiled: July 16, 2009Date of Patent: April 26, 2011Assignee: Panasonic CorporationInventors: Mikihiko Nishitani, Masahiro Sakai, Yusuke Fukui, Yosuke Honda, Yasuhiro Yamauchi, Michiko Okafuji
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Patent number: 7932675Abstract: There is provided a plasma display panel including: a front plate having display electrodes, a dielectric layer, and a protective layer formed on a glass substrate; and a rear plate that has electrodes, barrier ribs, and a phosphor layer formed on a substrate and is disposed opposite to the front plate. Peripheries of the front plate and the rear plate are sealed to form a discharge space, the display electrodes contains at least silver, the dielectric layer is configured to include a first dielectric layer that covers the display electrodes and second dielectric layer that covers the first dielectric layer and contains bismuth oxide, the thickness of the first dielectric layer is equal to or larger than 5 ?m and equal to or smaller than 13 ?m, and the ratio of the thickness of the first dielectric layer to the thickness of the display electrodes is larger than 1 and equal to or smaller than 3.Type: GrantFiled: February 6, 2007Date of Patent: April 26, 2011Assignee: Panasonic CorporationInventors: Akira Kawase, Kazuhiro Morioka, Eiichi Uriu, Tatsuo Mifune
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Patent number: 7923931Abstract: A plasma display panel is disclosed. The plasma display panel includes a first panel including address electrodes, a first dielectric layer, and a phosphor layer formed on a first substrate, and a second panel bonded with the first panel by interposing barrier ribs therebetween, the second panel including a plurality of transparent electrodes and bus electrodes, a second dielectric layer, a first protective layer containing magnesium oxide doped with a crystalline oxide, and a second protective layer containing crystalline magnesium oxide.Type: GrantFiled: March 3, 2008Date of Patent: April 12, 2011Assignee: LG Electronics Inc.Inventors: Deok Hai Park, Min Soo Park, Young Sung Kim, Bo Hyun Kim
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Patent number: 7923930Abstract: A plasma panel device having a multiplicity of gas filled plasma-shells, each plasma-shell being positioned on or in a substrate and electrically connected to conductors or electrodes to define a gas discharge pixel or subpixel. The plasma-shell comprises a hollow gas filled geometric body and includes plasma-disc, plasma-dome, plasma-sphere, and other geometric shapes. The substrate may be rigid, flexible, or semi-flexible with a flat, curved, or irregular surface. Each substrate may comprise a single layer or multiple layers of the same or different materials. Substrate composites may be used such as mixtures, dispersions, suspensions, and so forth. The device may comprise a single substrate or a dual substrate device. A plasma-shell device with a flexible substrate may be bendable and rollable in at least two directions, X and Y, looking at the top or plan view.Type: GrantFiled: July 23, 2007Date of Patent: April 12, 2011Assignee: Imaging Systems TechnologyInventors: Carol Ann Wedding, Donald K. Wedding
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Patent number: 7919922Abstract: Provided are a green phosphor for a plasma display panel (PDP) represented by Formula 1 and a PDP including a phosphor layer formed of the same: (Y1-x-yGdx)Al3(BO3)4:Tby??Formula 1 where 0?x<1, 0<y<1 and 0<x+y<1. The luminance saturation characteristic of a green phosphor layer can be improved using the green phosphor for a PDP according to the present embodiments, and the green phosphor can also be mixed with conventionally used green phosphors. Image quality can be improved according to a mixing rate of the green phosphor and conventionally used green phosphors since color reproduction range widens and luminance does not decrease compared to using the conventional green phosphors.Type: GrantFiled: September 17, 2007Date of Patent: April 5, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Soon-Rewl Lee, Sung-Yong Lee, Young-Gil Yoo, Jin-Won Kim, Young-Kwan Kim
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Patent number: 7911141Abstract: A plasma display panel that achieves improved discharge efficiency and reduced discharge voltage is provided. The plasma display panel includes a substrate, a sustain electrode located on the substrate, a first dielectric layer located on the substrate formed with the sustain electrode, and a second dielectric layer located on the first dielectric layer and having a larger dielectric constant than a dielectric constant of the first dielectric layer.Type: GrantFiled: August 21, 2008Date of Patent: March 22, 2011Assignee: LG Electronics Inc.Inventor: Woong Kee Min
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Patent number: 7911142Abstract: Disclosed are an electron emission thin-film with improved secondary electron emission characteristics compared with conventional ones, a plasma display panel including the electron emission thin-film, and their manufacturing methods. Using a vacuum deposition system, a protective layer that is an MgO thin-film is formed on a dielectric layer formed on a front glass substrate. At the time of deposition, angles that lines linking the central point of a target material for the protective layer respectively with the central point and both ends points of the front glass substrate form with the front glass substrate are exclusively in a range of 30 to 80°. This enables at least some of MgO columnar crystals constituting the protective layer to have flat planes that are inclined with respect to the surface of the thin-film.Type: GrantFiled: November 27, 2006Date of Patent: March 22, 2011Assignee: Panasonic CorporationInventors: Koichi Kotera, Yoshinao Ooe, Hiroki Kono, Hiroyosi Tanaka
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Patent number: 7906908Abstract: A Plasma Display Panel (PDP) includes: a first substrate and a second substrate that are arranged in parallel with each other with a predetermined distance therebetween; a plurality of address electrodes arranged on the first substrate; a first dielectric layer arranged to cover the address electrodes; a plurality of barrier ribs having a predetermined height from the first dielectric layer to define discharge cells; red, blue, and green phosphor layers respectively arranged in the discharge cells; a plurality of display electrodes arranged on one side of the second substrate facing the first substrate in a direction crossing the address electrodes; a second dielectric layer arranged to cover the display electrodes; and a protective layer arranged to cover the second dielectric layer. The second dielectric layer satisfies values of CIE L*a*b* where 70.0<L*<74.5, 0.0<a*<1.0, and ?5.0<b*<?8.0.Type: GrantFiled: November 8, 2007Date of Patent: March 15, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Seong-Hun Choo
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Patent number: RE42233Abstract: Disclosed is a plasma display apparatus in which film-type front filter is connected. A plasma display apparatus of the present invention includes a panel formed by attaching an upper substrate to a lower substrate, an front filter attached to an entire surface of the panel and including extensions extending by predetermined lengths from edges of the panel in omni-directions, a back cover formed on a rear surface of the chassis base, and a filter supporter for electrically connecting the extensions to the back covers. The filter supporter is connected to the compass.Type: GrantFiled: September 5, 2007Date of Patent: March 22, 2011Assignee: LG Electronics Inc.Inventors: Young Sung Kim, Kyung-Ku Kim, Hong Rae Cha, Myeong-Soo Chang, Byung-Gil Ryu
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Patent number: RE42405Abstract: A partition is formed by the process including a step for providing a sheet-like partition material that covers a display area and outside thereof on the surface of the substrate, a step for providing a mask for patterning that covers the display area and the outside thereof, so that a pattern of the portion arranged outside of the display area of the mask is a grid-like pattern, a step for patterning the partition material covered partially with the mask by a sandblasting process, and a step for baking the partition material after the patterning.Type: GrantFiled: December 4, 2008Date of Patent: May 31, 2011Assignees: Fujitsu Hitachi Plasma Display Limited, Hitachi Plasma Patent Licensing Co., Ltd.Inventors: Akihiro Fujinaga, Kazunori Ishizuka, Tatsutoshi Kanae, Kazuhide Iwasaki, Toshiyuki Nanto, Yoshimi Kawanami, Masayuki Shibata, Yasuhiko Kunii, Tadayoshi Kosaka, Osamu Toyoda, Yoshimi Shirakawa