Electrode Insulated From Fluid Medium Patents (Class 345/71)
  • Patent number: 8976442
    Abstract: Electro-wetting display devices are disclosed. The electro-wetting display may include an upper structure and a lower structure opposite to each other, a hydrophobic insulating layer covering a bottom surface of the upper structure, hydrophilic partitions disposed between the hydrophobic insulating layer and the lower structure to define pixel regions, and a colorless conductive fluid and a colored non-conductive fluid filling each of the pixel regions. A specific gravity of the colored non-conductive fluid may be smaller than a specific gravity of the colorless conductive fluid.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: March 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Gi Heon Kim
  • Patent number: 8531356
    Abstract: In a plasma display panel, a protective layer of a front plate is formed of a base protective layer and a particle layer. The base protective layer is a thin film of metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. The particle layer is formed in a manner that single-crystal particles of magnesium oxide having a peak of emission intensity at 200-300 nm two times or higher than another peak of emission intensity at 300-550 nm in the emission spectrum in cathode luminescence emission are stuck on the base protective layer. A panel driving circuit drives the plasma display panel with a subfield structure in which subfields are temporally disposed so that a magnitude of luminance weight has a monotonous decrease from a subfield where an all-cell initializing operation is performed to a subfield where a next all-cell initializing operation is performed.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: September 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Mitsuhiro Murata, Takuji Tsujita, Toshikazu Wakabayashi, Hiroshi Asano, Masaharu Terauchi
  • Patent number: 8531357
    Abstract: Protective layer (26) of front plate (20) of a plasma display panel has base protective layer (26a) and particle layer (26b). Base protective layer (26a) is formed of a thin film of metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. Particle layer (26b) is formed by sticking, to base protective layer (26a), single crystal particles (27) of magnesium oxide having an NaCl crystal structure that is surrounded by a specified two-type orientation face formed of (100) face and (111) face or a specified three-type orientation face formed of (100) face, (110) face, and (111) face. The panel driving circuit drives the panel while temporally disposing the subfields so that the luminance weight monotonically decreases from a subfield in which an all-cell initializing operation is performed to the subfield immediately before the subfield in which its next all-cell initializing operation is performed.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: September 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Mitsuhiro Murata, Yusuke Fukui, Toshikazu Wakabayashi, Hiroshi Asano
  • Patent number: 8508437
    Abstract: A plasma display device has a crystal particle made of MgO single crystal where the cathode luminescence emission spectrum exhibits a desired characteristic, and displays an image by a driving method in the initializing period. The initializing period has the first half for applying the voltage, which gradually increases from a first voltage and to a second voltage, to a second electrode, and the latter half for applying the voltage, which gradually decreases from a third voltage and to a fourth voltage.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: August 13, 2013
    Assignee: Panasonic Corporation
    Inventors: Mitsuhiro Murata, Takuji Tsujita, Masaharu Terauchi, Toshikazu Wakabayashi, Hiroshi Asano, Shinichiro Hashimoto, Keiji Akamatsu
  • Patent number: 8508467
    Abstract: A display device (10) includes an upper substrate (first substrate) (2), a lower substrate (second substrate) (3), and a conductive liquid (16) that is movably sealed in a display space (S) formed between the upper substrate (2) and the lower substrate (3). In the display device (10), a signal electrode (first electrode) (4) is provided on the upper substrate (2), and a scanning electrode (second electrode) (5) and a reference electrode (third electrode) (6) are provided on the lower substrate (3). The signal electrode (4) comes into contact with the conductive liquid (16) and is made of a material that is electrochemically inert to the conductive liquid (16).
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: August 13, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoko Teranishi, Akio Miyata, Shinichi Nakano, Toshiki Matsuoka
  • Patent number: 8482490
    Abstract: In a plasma display device, a plurality of agglomerated particle groups in which a plurality of crystal particles made of a metal oxide agglomerate are disposed in the periphery of a protective layer thereof. The plasma display device is driven by the following driving method to display images. An initializing period has a first half of the initializing period in which a second electrode is applied with a voltage gradually rising from a first voltage to a second voltage, and a second half of the initializing period in which the second electrode is applied with a voltage gradually falling from a third voltage to a fourth voltage.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: July 9, 2013
    Assignee: Panasonic Corporation
    Inventors: Mitsuhiro Murata, Kaname Mizokami, Toshikazu Wakabayashi, Shinichiro Hashimoto, Keiji Akamatsu
  • Patent number: 8466853
    Abstract: A driving method of a plasma display device according to an exemplary embodiment groups a plurality of address electrodes extending in a first direction into a plurality of groups, and logically divides each of the groups into a plurality of sub-groups. During a first period, a first pulse is sequentially applied to the plurality of groups, and a second pulse is sequentially applied to the plurality of sub-groups included in at least one of the plurality of groups during a second period following the first period. The first and second periods are address periods for sensing in a second direction crossing the first direction.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: June 18, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Tae-Yong Song, Suk-Jae Park, Woo-Joon Chung
  • Patent number: 8362979
    Abstract: In a plasma display panel, a protective layer of a front plate includes a base protective layer and a particle layer. The base protective layer is formed of a thin film containing magnesium oxide. The particle layer is formed by sticking, to base protective layer, agglomerated particles in which a plurality of single-crystal particles of magnesium oxide are agglomerated. A panel driving circuit drives the panel in a manner that subfields are temporally disposed so that a luminance weight is monotonically decreased from a subfield in which an all-cell initializing operation is performed to a subfield immediately preceding a subfield in which a next all-cell initializing operation is performed.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: January 29, 2013
    Assignee: Panasonic Corporation
    Inventors: Mitsuhiro Murata, Kaname Mizokami, Toshikazu Wakabayashi
  • Patent number: 8319705
    Abstract: The plasma display device has a display panel having first and second display electrodes and address electrodes, an electrode drive circuit, and a drive control circuit for controlling the electrode drive circuit. The drive control circuit performs a reset drive control, address drive control and sustain drive control in each subfield. The drive control circuit performs an all cell reset drive control which resets all cells in a first subfield out of the plurality of subfields, and an ON cell reset drive control which resets ON cells in a second subfield. At a first temperature T1, an ultimate potential of an slope pulse of the first display electrode is controlled to be a first potential in the ON cell reset drive control, and at a second temperature T2>T1, the ultimate potential is controlled to be a second potential higher than the first potential.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: November 27, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Kumagai, Katsumi Ito
  • Patent number: 8274486
    Abstract: A touch screen assembly and method of manufacturing thereof that includes a single layer of conductive material is provided. The conductive material is configured to include a horizontal pattern and a vertical pattern of electrodes, with one of the patterns having gaps between the electrodes, such that the electrodes in the horizontal pattern do not come into direct contact with electrodes in the vertical pattern. To provide a connection between the electrodes separated by gaps in the interrupted pattern, an insulating material is placed onto the gaps over the uninterrupted pattern, and a printable and electrically conductive connector is positioned over the insulating material and functions to couple at least two electrodes together. In one embodiment, the conductive connector includes carbon nanotubes.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: September 25, 2012
    Assignee: Flextronics AP, LLC
    Inventors: Fabrice Barbier, Farouk Zabel
  • Patent number: 8269419
    Abstract: A plasma display panel equipped with a front substrate and a back substrate facing each other to form a discharge space. On the discharge space side of the front substrate there are disposed a metal oxide layer and magnesium oxide crystal particles. An area ratio of the magnesium oxide crystal particles to the metal oxide layer is 0.1% to 85%.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: September 18, 2012
    Assignee: Panasonic Corporation
    Inventors: Taro Naoi, Hai Lin, Eishiro Otani, Hiroshi Ito
  • Patent number: 8115702
    Abstract: A plasma display device and a method of driving the same, capable of reducing or preventing the deterioration of components such as a switching device, due to an overcurrent. In a reset period, in order to cause the voltage of a scan electrode to ramp down from a first voltage to a second voltage, a panel driver includes a falling ramp switch that repeats turn-on/turn-off operations, alternately coupling and de-coupling a low-level power supply to the scan electrode, resulting in a gradually falling ramp waveform. A switch controller generates a switching pulse to control the falling ramp switch. Each turn-on time of the switching pulse for the initial falling ramp waveform following a power-on of the plasma display device is controlled to be shorter than each turn-on time of the switching pulse for other falling ramp waveform.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 14, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ito Kazuhiro, Yoo-jin Song, Tae-wook Kim
  • Patent number: 8076851
    Abstract: 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: Grant
    Filed: May 3, 2010
    Date of Patent: December 13, 2011
    Assignee: Panasonic Corporation
    Inventors: Taro Naoi, Hai Lin, Eishiro Otani, Hiroshi Ito
  • Patent number: 7777695
    Abstract: A plasma display device which selectively generates address discharge in each display cell in accordance with pixel data based on a video signal in an address period, applies a sustain pulse between row electrodes forming each row electrode pair in a sustain period, and applies, in the sustain period, a discharge timing control pulse to one row electrode of each row electrode pair, so that the discharge timing control pulse partly overlaps with a first sustain pulse in terms of time, which is applied to the other row electrode of each row electrode pair.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: August 17, 2010
    Assignee: Panasonic Corportion
    Inventors: Motofumi Ikeda, Yoshichika Sato, Nobuhiko Saegusa, Shigeru Iwaoka
  • Publication number: 20100007586
    Abstract: A plasma display panel (PDP) is disclosed. In one embodiment, the PDP includes: i) first and second substrates facing each other, ii) a plurality of first barrier ribs formed between the first and second substrates and configured to define a plurality of discharge cells and iii) a plurality of second barrier ribs dividing each of the discharge cells into a first sub-discharge cell and a second sub-discharge cell, wherein a phosphor layer is formed in the first sub-discharge cells and is not formed in the second sub-discharge cells. According to one embodiment, the PDP has high driving efficiency obtained by improving an address voltage margin, and high image quality obtained by removing noise brightness caused by discharge light resulting from an address discharge, and is suitable for an image display with high efficiency and high resolution.
    Type: Application
    Filed: March 26, 2009
    Publication date: January 14, 2010
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jun-Yong Park, Won-Hee Jeong, Joo-Sick Jung, Su-Bin Song
  • Patent number: 7615927
    Abstract: A plasma display panel includes a first substrate and a second substrate provided opposing one another with a predetermined gap therebetween. A plurality of barrier ribs are mounted in the gap between the first and second substrates to define a plurality of discharge cells. A plurality of phosphor layers are respectively formed in the discharge cells. A plurality of display electrodes are formed on the first substrate along a first direction, and a plurality of address electrodes are formed on the first substrate along a second direction which intersects the first direction and separated from the display electrodes.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: November 10, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Takahisa Mizuta
  • Patent number: 7605780
    Abstract: A display apparatus having a display part to receive a predetermined weight number of sustain pulses to display a frame of an image time-shared into a plurality of subfields, the display apparatus includes a motion detector to determine whether an input image is a still image, and a pulse driver to transmit a number of sustain pulses to the display part, and to decrease the number of sustain pulses transmitted to the display part to cause every frame to be smaller than the weight number when the motion detector determines the input image to be the still image. In this display apparatus and control method thereof, image sticking is prevented without deteriorating gradation representation and without a visual error.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: October 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byoung-hwa Jung, Jong-sul Min, Young-sun Kim
  • Patent number: 7598932
    Abstract: The present invention relates to a plasma display apparatus and driving method thereof. The plasma display apparatus according to the present invention comprises a Plasma Display Panel (PDP), an energy storage part for recovering energy from the PDP, and an energy supply and recovery controller that forms a current path so that the energy storage part can be charged or discharged. In the energy supply and recovery controller, a reference bias voltage is a negative voltage. The driving method of the plasma display apparatus according to the present invention comprises the steps of supplying energy to the PDP, and maintaining a reference bias voltage of a recovery switch part to a negative voltage when an energy storage part recovers energy from the PDP.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: October 6, 2009
    Assignee: LG Electronics Inc.
    Inventors: Sunggon Shin, Yunkwon Jung
  • Patent number: 7573200
    Abstract: 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: Grant
    Filed: November 10, 2004
    Date of Patent: August 11, 2009
    Assignee: Panasonic Corporation
    Inventors: Shinichi Yamamoto, Mikihiko Nishitani, Yukihiro Morita
  • Publication number: 20090109141
    Abstract: An in-liquid plasma electrode 1 according to the present invention is an in-liquid plasma electrode for generating plasma in a liquid L and has a conductive member 11 having an electric discharge end surface 111 in contact with the liquid L, and an insulating member 16 covering an outer periphery of the conductive member 11 at least except the electric discharge end surface 111. Preferably, d and x satisfy ?2d?x?2d, where d is a length of a minor axis of the cross section when a conductive end portion 110 of the conductive member 11 having the electric discharge end surface 11 has a roughly circular cross section, or d is a length of a short side of the cross section when the conductive end portion 110 has a roughly rectangular cross section, and x is a distance from a reference plane 161 to a plane containing the electric discharge end surface 111 when the reference plane 161 is an end surface 161 of the insulating member 16 in roughly parallel with the electric discharge end surface 111.
    Type: Application
    Filed: December 2, 2005
    Publication date: April 30, 2009
    Inventors: Hitotoshi Murase, Toshihisa Shimo, Hiroaki Takashima, Hiromichi Toyota, Shinfuku Nomura, Tsunehiro Maehara
  • Publication number: 20090085842
    Abstract: A plasma display apparatus includes a plasma display panel (PDP) and electrode drivers. The electrode drivers supply driving voltages to scan electrodes and sustain electrodes of the PDP through a connection circuit which includes a base film and electrode line groups electrically separated from one another. Electrodes from a first electrode line group are connected to sustain electrodes of a first sustain electrode group and electrode lines from a second electrode line group to sustain electrodes of a second sustain electrode group. During a predetermined period of an address period, a first bias voltage is applied to the sustain electrodes of the first sustain electrode group and a second bias voltage different from the first bias voltage is applied to the sustain electrodes of the second sustain electrode group.
    Type: Application
    Filed: February 6, 2008
    Publication date: April 2, 2009
    Applicant: LG ELECTRONICS INC.
    Inventors: Yongsin KIM, Junghoan KIM, Kwangseon LEE, Inyoung LEE
  • Publication number: 20090046039
    Abstract: A plasma display panel and a method for manufacturing the same ate provided. The plasma display panel includes a first substrate, a second substrate, and a drive device. The first substrate includes at least one address electrode, a dielectric layer, phosphors, and at least one barrier rib. The second substrate may be bonded to the first substrate with the at least one barrier ribs between the first and second substrates. The second substrate includes at least one pair of sustain electrodes, a dielectric layer, and a protective layer including a single crystal magnesium oxide nano powder. The drive device provides at least one of a ramp-up or a ramp-down waveform, wherein at least one of (1) the ramp-up waveform has a different peak voltage based on the temperature of the plasma display panel or (2) the ramp-down waveform has a different lowest voltage based on the temperature of the plasma display panel.
    Type: Application
    Filed: April 28, 2008
    Publication date: February 19, 2009
    Inventors: Yong Sin Kim, Jung Hoan Kim, Kwang Seon Lee, In Yong Lee
  • Patent number: 7452607
    Abstract: Provided is a nonlead glass for covering an electrode, which comprises, in mol %, B2O3 15-65%, SiO2 2-38%, MgO 2-30%, MgO+CaO+SrO+BaO 5-45%, Li2O 1-15%, Li2O+Na2O+K2O 2-25% and others, and which comprises ZnO 0-15%. Provided is a nonlead glass for covering an electrode, which comprises, in mol %, B2O3 25-65%, SiO2 2-38%, MgO 2-30%, MgO+CaO+SrO+BaO 5-45%, Li2O+Na2O+K2O 2-25%, Al2O3 0-30, TiO 0-10% and ZnO 0-15%.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: November 18, 2008
    Assignee: Asahi Glass Company, Limited
    Inventors: Hitoshi Onoda, Yu Goshima, Yumiko Aoki
  • Publication number: 20080278419
    Abstract: A plasma display panel includes a discharge space between two substrate assemblies opposed to each other, wherein a priming particle-emitting layer containing magnesium oxide crystals to which a halogen element is added in an amount of 1 to 10000 ppm is placed in such a way that the priming particle-emitting layer is exposed to the discharge space.
    Type: Application
    Filed: March 10, 2008
    Publication date: November 13, 2008
    Inventors: Tomonari Misawa, Koichi Sakita
  • Publication number: 20080259003
    Abstract: 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: Application
    Filed: March 27, 2008
    Publication date: October 23, 2008
    Inventor: Jong Rae LIM
  • Patent number: 7403174
    Abstract: A method and an apparatus for improving the gray-scale linearity of a plasma display. At least two types of gray-scale allocations are mixed for forming the original gray scale, or different gray scales are mixed to derive the original gray scale, so as to obtain the required brightness. Therefore, by using multiple combinations to adjust the original gray scale, the required brightness is obtained, and the gray scale linearity for all the gray scales is improved.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: July 22, 2008
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chun-Hsu Lin, Hui-Chen Lin, Ching-Hui Lin, Kuang-Lang Chen
  • Publication number: 20080165093
    Abstract: An alternating current type plasma display panel with electrodes of asymmetrical construction and a method for driving the same. A first pulse is applied to the first electrode. A second pulse is applied to the second electrode, the second pulse having a width and a phase different from those of the first pulse. The pulse widths are adjusted according to a size of the electrodes to make an amount of a wall charge in two electrodes substantially uniform, thereby making the intensity and an amount of the light uniform.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 10, 2008
    Inventors: Tae-seung Cho, Jae-ik Kwon, Young-do Choi
  • Publication number: 20080158105
    Abstract: A plasma display panel including: a first substrate; a plurality of first electrodes and a plurality of second electrodes, the first and second electrodes being disposed in parallel on the first substrate; a first dielectric surrounding the first electrodes and the second electrodes and connecting the first electrodes and the second electrodes; a passivation layer on the first dielectric and on the first electrodes and the second electrodes; a second substrate facing the first substrate; a plurality of third electrodes on the second substrate and crossing the first electrodes and the second electrodes; and a second dielectric on the third electrodes.
    Type: Application
    Filed: September 20, 2007
    Publication date: July 3, 2008
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Byoung-min Chun, Kwang-sik Lee, Won-ju Yi, Kyoung-doo Kang, Yong-shik Hwang, Tae-seung Cho, Seok-gyun Woo, Jong-woo Choi, Seong-gi Choo, Young-do Choi, Jae-ik Kwon, Hyun-min Son
  • Patent number: 7375722
    Abstract: In a circuit driving a capacitive load Cp, current passed through a transistor Q3, a diode D1 and a recovering coil L is passed through lines L1, L2, and the inductance components of the lines L1 and L2, and the drain-source capacitances of the transistors Q1 and Q2 generate LC resonance. Capacitors C1 and C2 are connected in parallel to the drain-source regions of the transistors Q1 and Q2 to increase the total drain-source capacitance and reduce the resonance frequency, so that unwanted electromagnetic wave radiation in a frequency band affecting other electronic devices is suppressed.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: May 20, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Kigo, Hidehiko Shoji, Jumpei Hashiguchi
  • Publication number: 20070285356
    Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus includes an upper substrate, a scan electrode, a sustain electrode, a dielectric layer, a lower substrate, and address electrodes. The scan and sustain electrodes are formed on the upper substrate, and the dielectric layer covers the scan and sustain electrodes. The lower substrate faces the upper substrate, and the address electrodes are formed on the lower substrate. In plasma display apparatus, at least one of the scan and sustain electrodes is formed as one layer. A reset signal including a gradually falling setdown period is supplied to the scan electrode more than two times in at least one reset period among a plurality of subfields.
    Type: Application
    Filed: December 28, 2006
    Publication date: December 13, 2007
    Inventors: Seong Nam Ryu, Woo Gon Jeon, Sang Min Hong, Woo Tae Kim, Kyung A. Kang, Jeong Hyun Hahm, Jae Sung Kim
  • Patent number: 6897564
    Abstract: A plasma display panel having a trench discharge cell and a method of fabricating the same are disclosed in the present invention. The plasma display panel having a plurality of trench discharge cells includes a transparent substrate having at least one isolated trench in a discharge cell, one or more sustain electrodes in each trench and extended to outside of the trench, one or more bus electrodes on the sustain electrode, and a dielectric layer formed on an entire surface of the transparent substrate including the sustain electrodes, the bus electrodes, and the trench, wherein the dielectric layer has a first portion on the bottom of the trench, a second portion outside the trench of the substrate, and a third portion on side-walls of the trench, and wherein the trench has a first length perpendicular to a direction of the sustain electrodes and a second length parallel to a direction of the sustain electrodes and the first length is greater than the second length.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: May 24, 2005
    Assignee: Plasmion Displays, LLC.
    Inventors: Dae-Il Kim, William Kokonaski
  • Patent number: 6839045
    Abstract: A display apparatus, that includes current driving type luminescent elements, has a driving system that takes the conduction types of TFTs to control the emission of the luminescent elements into consideration. In order to reduce driving voltage and improve display quality simultaneously, the arrangement is provided such that if the second TFT which performs the “on-off” function of the current for the luminescent element is of an N channel type, the potential of the common power supply line (“com”) is lowered below the potential of the opposite electrode (“op”) of the luminescent element to obtain a higher gate voltage (“Vgcur”).
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: January 4, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Tokuroh Ozawa, Mutsumi Kimura
  • Patent number: 6731255
    Abstract: A method of driving a plasma display panel showing images having frames composed of odd and even fields. The plasma display panel has scan electrodes and address electrodes perpendicular to the scan electrodes. In the method, first the odd and then the even scan electrodes, or vice versa, are addressed in the frame and subsequently sustained. This method saves time, which may be used to speed up the plasma display device.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: May 4, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Gerrit Hendrik Van Leeuwen, Antonius Hendricus Maria Holtslag
  • Patent number: 6456264
    Abstract: In an address-while-display (AWD) driving method in which addressing and sustaining are simultaneously performed, a plasma display panel (PDP) is driven with an automatic power control function for reducing power consumption when there are lots of ON pixels over the entire PDP, that is, the brightness of the screen of the PDP is higher than a predetermined level. In the PDP driving method, in order to suppress power consumption for maintaining a bright state of the screen, discharge sustain pulses at respective sub-fields for implementing gray scale display of each frame are invalidated using erase pulses in a constant ratio for each sub-field, while all the video signals applied in the form of the AWD driving waveforms are continuously applied to the respective frame periods in which all the video signals are displayed without interruption, that is, irrespective of whether discharge is performed.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: September 24, 2002
    Assignee: Samsung SDI Co., LTD
    Inventors: Kyoung-ho Kang, Jeong-duk Ryeom
  • Patent number: 6198220
    Abstract: A sealing structure for an organic light emitting device display. The sealing structure comprises a metal film overlying a dielectric film. The sealing structure has low moisture and oxygen permeability. At least one of the metal layers may react with moisture or oxygen to seal off pin holes. A net low stress sealing structure may be formed by combining tensile and compressive films. The sealing structure may be etched to create openings for connection to outside circuitry. The innovative sealing structure minimizes moisture leakage and vertical shorts between diode cathode and anode.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: March 6, 2001
    Assignee: eMagin Corporation
    Inventors: Gary W. Jones, Webster E. Howard, Steven M. Zimmerman
  • Patent number: 6195075
    Abstract: In a plasma display device having a three-dimensional matrix wiring arrangement of anodes, cathodes and address electrodes, writing discharge is caused between anodes and address electrodes to temporarily store writing charge on a dielectric layer, and the writing charge is discharged as an auxiliary discharge by applying a sustaining voltage to the cathodes, thereby inducing main discharge between the anodes and the cathodes.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: February 27, 2001
    Assignee: Matsushita Electronics Corporation
    Inventors: Taichi Shino, Hajime Mae, Kazunori Hirao, Yukiharu Ito, Naoki Kosugi
  • Patent number: 6195074
    Abstract: A three electrodes face discharge color plasma display panel (PDP) is disclosed. The three electrodes face discharge color PDP comprises a front glass substrate, a back glass substrate, a plurality of partition walls, a plurality of scanning and sustaining electrode lines, a plurality of common sustaining electrode lines, and a plurality of address electrode lines. The plurality of scanning and sustaining electrode lines are formed on the front glass substrate. The common sustaining electrode lines and the adress electrode lines are formed on the back glass substrate. Therefore, the brightness of the whole picture can be enhanced as an intensity of a visible light passing the front substrate increases. Also, a discharge interference occuring between adjacent cells can be minimized as a discharge region of a discharge space is formed up and down.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: February 27, 2001
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Se-Yong Kim
  • Patent number: 6084559
    Abstract: A plasma-display panel of high luminosity and efficiency which does not require auxiliary cells so that the panel structure has high-density cells, enabling longer emission time and smaller reactive power.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: July 4, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuaki Nagao, Junichi Hibino, Yusuke Takada
  • Patent number: 5907311
    Abstract: A liquid crystal cell and a plasma cell are layered together with a dielectric sheet in between. Data electrodes (column electrodes) are constructed to form parallel columns on the underside of an upper substrate in a display cell. Discharge channels filled with ionizable gas are constructed in parallel rows in a plasma cell. Row electrodes are constructed on the upperside of a lower substrate corresponding to each of the discharge channels, and reference electrodes to which reference voltages are applied, are constructed inside each of the discharge channels. Data voltages are applied to the data electrodes and drive pulses are applied to the row electrodes. The polarities of the data voltages are changed so as to be opposite to the polarities of the drive pulses with respect to the reference voltages. Each time the polarities of the drive pulses are inverted, plasma discharges are generated in the discharge channel corresponding to the row electrodes to which the drive pulses are applied.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: May 25, 1999
    Assignee: Sony Corporation
    Inventor: Tomoya Yano
  • Patent number: 5523770
    Abstract: A plurality of signal electrodes D arranged in parallel to each other are formed on a major surface of a first substrate 4. A second substrate 6 is opposed to the first substrate. A plurality of plasma electrodes 7 arranged in parallel to each other and intersecting the signal electrodes D are printed on a major surface of the second substrate 6. In addition, an opaque insulating striped pattern 8 is printed so as to intersect and overlap with the plasma electrodes 7. A liquid crystal layer 5 is sandwiched between the first and second substrates 4 and 6. Further, a plasma chamber 10 having consecutive spaces is formed between the liquid crystal layer 5 and the second substrate 6, and filled with an ionizable gas. The gap space of the plasma chamber 10 can be controlled on the basis of the film thicknesses of the plasma electrodes 7 and the striped pattern 8. The gas is selectively ionized by discharge generated between the two adjacent plasma electrodes 7.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: June 4, 1996
    Assignee: Sony Corporation
    Inventor: Shoichi Tanamachi