Patents by Inventor Mitsuyoshi Makino
Mitsuyoshi Makino has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080284684Abstract: A plasma display device and a method for driving the plasma display device are provided, wherein deterioration in image quality in a period immediately after power-on can be restrained while improving dark contrast. When driving a PDP, by applying various drive pulses, that includes a phosphor layer containing a secondary electron emissive material in respective discharge cells, drive pulses having different pulse waveforms are generated in a period from power-on of the plasma display device to after a lapse of a predetermined period of time, and in a period after a lapse of the predetermined period of time.Type: ApplicationFiled: May 13, 2008Publication date: November 20, 2008Applicant: Pioneer CorporationInventors: Mitsuhiro ISHIZUKA, Mitsuyoshi Makino, Hajime Homma, Koji Hashimoto, Masanori Ishihara, Tsutomu Tokunaga, Tatsuya Sugimoto
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Patent number: 7027011Abstract: A method of driving a plasma display panel including a plurality of scanning electrodes covered with a dielectric layer, and a plurality of sustaining electrodes covered with a dielectric layer, including the steps of (a) applying scanning pulses in time-division to the scanning electrodes in an addressing period in which a cell or cells emitting light is(are) selected, and applying sustaining pulses to the sustaining electrodes in a sustaining period for generating preliminary discharge and preliminary erasing discharge before the cell or cells emitting light is(are) selected, and (b) applying a serrate pulse to the scanning or sustaining electrodes when the preliminary erasing discharge is generated, the serrate pulse having an inclination smaller than 10 V/?s, wherein a period of time until the generation of the preliminary erasing discharge from the termination of the preliminary discharge is set shorter than 3T where T indicates a decay time constant of priming particles.Type: GrantFiled: March 21, 2003Date of Patent: April 11, 2006Assignee: Pioneer CorporationInventor: Mitsuyoshi Makino
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Publication number: 20050007312Abstract: A plasma display device is provided which is capable of solving a problem that luminance of a black display caused by light emitted by pre-discharge and pre-erasing discharge is high, of enhancing a contrast ratio by lowering display luminance, of reducing discharge currents that flow by writing discharge without lowering display luminance. By dividing surface discharge electrodes on a side where writing discharge is made to occur into first and second portions, writing discharge to select a state of being displayed or being non-displayed is made to occur by using only the first portion. Then, sustaining discharge to realize light-emission for displaying is made to occur by using the first and second portions. This causes currents that flow by writing discharge to decrease and writing operations to be performed in a stable manner. Since no reduction in currents that flow by sustaining discharge occurs, displaying at high luminance can be maintained.Type: ApplicationFiled: July 8, 2004Publication date: January 13, 2005Inventors: Yoshito Tanaka, Mitsuyoshi Makino
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Publication number: 20040239594Abstract: A plasma display apparatus includes a plasma display panel (PDP) and a driving control section outputting drive control signals to drive the plasma display panel. The PDP includes a front substrate and a rear substrate. A discharge spaces are formed between the front substrate and the rear substrate. The front substrate includes a scanning electrode, a sustaining electrode and a priming discharge electrode. A priming discharge gap and a display gap are formed between predetermined electrodes. The rear substrate includes a data electrode. The drive control signals directs an operation of distributing a field into subfields, generating a priming discharge in the priming discharge gap in the subfields, and generating the priming discharge in the display gap in at least one of the subfields. The PDP is driven based on the first drive control signal.Type: ApplicationFiled: May 26, 2004Publication date: December 2, 2004Applicant: NEC PLASMA DISPLAY CORPORATIONInventor: Mitsuyoshi Makino
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Patent number: 6744200Abstract: A plasma display panel includes display cells disposed in matrix at cross points of a plurality of common electrodes and a plurality of data electrodes. In each of the display cells, data writing discharge and sustaining discharge are performed to emit light. Brightness is controlled by applying a sustaining pulse having a frequency higher than &mgr;iV/(&pgr;d2) between the sustaining electrodes, where &mgr;i is an ion mobility of the discharge gas filled in the display cell, V is a maximum value of the applied voltage, and d is a distance between the sustaining electrodes performing the sustaining discharge.Type: GrantFiled: January 15, 2002Date of Patent: June 1, 2004Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Patent number: 6670775Abstract: A PDP driving method, in which a stable writing discharge can be realized by using a scanning pulse whose width is narrow without changing a structure of the panel and an image having high light emitting luminance can be realized in the large number of scanning lines, is provided. When a scanning pulse is applied to scanning electrodes, a writing discharge is generated at all of display cells. Electric charge particles generated by the writing discharge at the display cells are supplied to display cells on the next scanning line by diffusion. The writing discharge is stably generated in high speed at the next scanning line when a scanning pulse is applied to the next scanning line by receiving the electric charge particles, consequently, the width of the scanning pulse can be made to be narrow. In order that the writing discharge is generated at display cells, which do not shift to a sustaining discharge, a sub scanning pulse being negative polarity is applied to common electrodes.Type: GrantFiled: May 23, 2002Date of Patent: December 30, 2003Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Publication number: 20030184502Abstract: A method of driving a plasma display panel including a plurality of scanning electrodes covered with a dielectric layer, and a plurality of sustaining electrodes covered with a dielectric layer, including the steps of (a) applying scanning pulses in time-division to the scanning electrodes in an addressing period in which a cell or cells emitting light is(are) selected, and applying sustaining pulses to the sustaining electrodes in a sustaining period for generating preliminary discharge and preliminary erasing discharge before the cell or cells emitting light is(are) selected, and (b) applying a serrate pulse to the scanning or sustaining electrodes when the preliminary erasing discharge is generated, the serrate pulse having an inclination smaller than 10 V/&mgr;s, wherein a period of time until the generation of the preliminary erasing discharge from the termination of the preliminary discharge is set shorter than 3T where T indicates a decay time constant of priming particles.Type: ApplicationFiled: March 21, 2003Publication date: October 2, 2003Applicant: NEC PLASMA DISPLAY CORPORATIONInventor: Mitsuyoshi Makino
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Patent number: 6496167Abstract: A front glass substrate and a back glass substrate are disposed, confronting each other to interpose a certain space therebetween. A discharge gas is enclosed within the space. The space is divided into a plural of display cells and a plural of priming discharge cells. Display data write and sustaining discharges for displaying an image are caused in display cells by priming effects from priming discharge cells. Display cell electrodes control discharges at display cells. A pair of priming discharge electrodes for causing discharges in priming discharge cells is provided independently of display cell electrodes, and is driven independently of display cells. The priming discharge cells are independently of display cells with respect to structure and driving control, and may discharge preliminarily by a sine wave driving method using a low drive frequency.Type: GrantFiled: April 16, 2001Date of Patent: December 17, 2002Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Publication number: 20020175633Abstract: A PDP driving method, in which a stable writing discharge can be realized by using a scanning pulse whose width is narrow without changing a structure of the panel and an image having high light emitting luminance can be realized in the large number of scanning lines, is provided. When a scanning pulse is applied to scanning electrodes, a writing discharge is generated at all of display cells. Electric charge particles generated by the writing discharge at the display cells are supplied to display cells on the next scanning line by diffusion. The writing discharge is stably generated in high speed at the next scanning line when a scanning pulse is applied to the next scanning line by receiving the electric charge particles, consequently, the width of the scanning pulse can be made to be narrow. In order that the writing discharge is generated at display cells, which do not shift to a sustaining discharge, a sub scanning pulse being negative polarity is applied to common electrodes.Type: ApplicationFiled: May 23, 2002Publication date: November 28, 2002Inventor: Mitsuyoshi Makino
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Patent number: 6426732Abstract: A discharge sustaining pulse voltage comprising a preceding high voltage V1 of a short duration t1 and a subsequent low voltage V2 of a long duration t2 is applied to common and scanning electrodes of a plasma display panel.Type: GrantFiled: May 22, 1998Date of Patent: July 30, 2002Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Patent number: 6414654Abstract: A method of driving a plasma display panel is disclosed. The sustain discharge frequency of sustain electrodes and scan electrodes is set to a high level during the first half of a sustain discharge period during which there are few discharges and the effect of saturation need not be considered. On the other hand, the sustain discharge frequency of sustain electrodes and scan electrodes is set to a lower level in order to limit the effect of saturation during the latter half of a sustain discharge period in which the number of discharges is great and saturation cannot be ignored.Type: GrantFiled: June 29, 1998Date of Patent: July 2, 2002Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Publication number: 20020067127Abstract: A plasma display panel includes display cells disposed in matrix at cross points of a plurality of common electrodes and a plurality of data electrodes. In each of the display cells, data writing discharge and sustaining discharge are performed to emit light. Brightness is controlled by applying a sustaining pulse having a frequency higher than &mgr;i V(&pgr;d2) between the sustaining electrodes, where &mgr;i; is an ion mobility of the discharge gas filled in the display cell, V is a maximum value of the applied voltage, and d is a distance between the sustaining electrodes performing the sustaining discharge.Type: ApplicationFiled: January 15, 2002Publication date: June 6, 2002Applicant: NEC CORPORATIONInventor: Mitsuyoshi Makino
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Patent number: 6356017Abstract: A plasma display panel includes display cells disposed in matrix at cross points of a plurality of common electrodes and a plurality of data electrodes. In each of the display cells, data writing discharge and sustaining discharge are performed to emit light. Brightness is controlled by applying a sustaining pulse having a frequency higher than &mgr;iV/(&pgr;d2) between the sustaining electrodes, where &mgr;i is an ion mobility of the discharge gas filled in the display cell, V is a maximum value of the applied voltage, and d is a distance between the sustaining electrodes performing the sustaining discharge.Type: GrantFiled: January 11, 1999Date of Patent: March 12, 2002Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Patent number: 6313580Abstract: A front glass substrate and a back glass substrate are disposed, confronting each other to interpose a certain space therebetween. A discharge gas is enclosed within the space. The space is divided into a plural of display cells and a plural of priming discharge cells. Display data write and sustaining discharges for displaying an image are caused in display cells by priming effects from priming discharge cells. Display cell electrodes control discharges at display cells. A pair of priming discharge electrodes for causing discharges in priming discharge cells is provided independently of display cell electrodes, and is driven independently of display cells. The priming discharge cells are independently of display cells with respect to structure and driving control, and may discharge preliminarily by a sine wave driving method using a low drive frequency.Type: GrantFiled: April 8, 1999Date of Patent: November 6, 2001Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Publication number: 20010020924Abstract: A front glass substrate and a back glass substrate are disposed, confronting each other to interpose a certain space therebetween. A discharge gas is enclosed within the space. The space is divided into a plural of display cells and a plural of priming discharge cells. Display data write and sustaining discharges for displaying an image are caused in display cells by priming effects from priming discharge cells. Display cell electrodes control discharges at display cells. A pair of priming discharge electrodes for causing discharges in priming discharge cells is provided independently of display cell electrodes, and is driven independently of display cells. The priming discharge cells are independently of display cells with respect to structure and driving control, and may discharge preliminarily by a sine wave driving method using a low drive frequency.Type: ApplicationFiled: April 16, 2001Publication date: September 13, 2001Inventor: Mitsuyoshi Makino
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Patent number: 6160530Abstract: In an AC drive type plasma display panel, a pre-discharge pulse and/or a sustain discharge pulse has a leading-edge voltage changing rate of less than 100 V/.mu.s.Type: GrantFiled: April 2, 1998Date of Patent: December 12, 2000Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Patent number: 6097365Abstract: A color plasma display panel having a plurality of data drivers is disclosed. Data drivers which output data pulses for writing display information into pixels are divided for different emitted light colors, that is, into an R data driver, a G data driver and a B data driver. The R data driver is connected to data electrodes which form pixel columns of R, the G data driver is connected to data electrodes which form pixel columns of G, and the B data driver is connected to data electrodes which form pixel columns of B. The R data driver, G data driver and B data driver can adjust the data pulse widths, output voltages and output timings thereof independently of each other.Type: GrantFiled: December 18, 1997Date of Patent: August 1, 2000Assignee: NEC CorporationInventor: Mitsuyoshi Makino
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Patent number: 6088010Abstract: An AC-discharge color plasma display panel has a matrix of unit discharge spaces which include unit discharge spaces for emitting light in the same color that are arranged along the scan electrodes, and sets of three adjacent unit discharge spaces for emitting light in three different colors that are arranged along the data electrode. Scan pulses and data pulses applied to the unit discharge spaces to generate writing discharges according to display information and pairs of sustaining pulses applied to the unit discharge spaces to generate and maintain sustaining discharges are controllable with respect to pulse durations, oscillation frequencies, voltages, etc. for each of the colors. A method of driving the AC-discharge color plasma display panel is also disclosed.Type: GrantFiled: October 20, 1997Date of Patent: July 11, 2000Assignee: NEC CorporationInventors: Mitsuyoshi Makino, Toshihiro Yoshioka
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Patent number: 5789862Abstract: An AC plasma display panel includes first and second plates, a discharge space, a plurality of pairs of scan electrodes and common electrodes, and a plurality of data electrodes. The first and second plates are arranged opposite to each other through a predetermined gap, at least one of which is transparent. The discharge space is partitioned into a plurality of pixels. The pairs of scan electrodes and common electrodes are formed on the inner surface of the first plate in the row direction to allow emission sustaining surface discharge therebetween. The pixels are arranged at the intersections of the scan and common electrodes and the data electrodes. In this arrangement, the following relation is established0.80.ltoreq.h/d.ltoreq.1.25where d is the surface discharge gap between the scan and common electrodes, and h is the opposing discharge gap between the scan and common electrodes and the data electrodes.Type: GrantFiled: June 6, 1997Date of Patent: August 4, 1998Assignee: NEC CorporationInventor: Mitsuyoshi Makino