Patents by Inventor Yoshinori Okada

Yoshinori Okada 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).

  • Publication number: 20130250394
    Abstract: Disclosed is an electrochromic display device including a display substrate, a display electrode provided on the display substrate, a first electrochromic layer provided on the display electrode, an intermediate display electrode provided above the first electrochromic layer separately from the first electrochromic layer, a second electrochromic layer provided on and contacting the intermediate display electrode, an opposed substrate, an opposed electrode provided on the opposed substrate, and an electrolyte solution provided between a surface of the display substrate on which the display electrode is formed and a surface of the opposed substrate on which the opposed electrode is formed, wherein the intermediate display electrode contains a rod-shaped, whisker-shaped, or long-fiber-shaped electrically conductive fine particle, and at least a portion of a space in the electrically conductive fine particle is filled with a material forming the second electrochromic layer.
    Type: Application
    Filed: March 22, 2013
    Publication date: September 26, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshinori Okada, Tohru Yashiro, Yoshihisa Naijo, Sukchan Kim, Shigenobu Hirano, Koh Fujimura, Hiroyuki Takahashi, Kazuaki Tsuji, Toshiya Sagisaka, Keiichiroh Yutani, Mamiko Inoue
  • Patent number: 8525294
    Abstract: A package-on-package includes a semiconductor package, and a coil provided at the semiconductor package. The semiconductor package includes a bottom face, and a solder ball protruded from the bottom face. An axis of the coil is inclined with respect to the normal line of the bottom face.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: September 3, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Akira Tada, Hiroki Tanabe, Yoshinori Okada, Ikuo Kudo
  • Publication number: 20120154892
    Abstract: An ion conductor includes a mixture including an electrolyte including a salt including inorganic or organic pairs of negative and positive ions, and a low-molecular liquid crystal material. Further, an impedance of the ion conductor varies in accordance with an increase of a voltage applied to the ion conductor due to an orientation response of the low-molecular liquid crystal material, the impedance being determined by an AC impedance method.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 21, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tohru YASHIRO, Shigenobu Hirano, Koh Fujimura, Yoshihisa Naijo, Yoshinori Okada, Hiroyuki Takahashi, Akishige Murakami
  • Patent number: 8203549
    Abstract: A plasma display panel driving method and a plasma display apparatus are disclosed in which a suitable address discharge can be performed at a next scanning timing by reducing voltage changes in a sustain electrode and a scan electrode caused by a change of an address pulse when the address pulse is applied to an address electrode at a scanning timing. The plasma display panel driving method drives a plasma display panel which includes plural scan electrodes extending in a first direction and plural address electrodes extending in a second direction orthogonal to the first direction. In the method, a negative polarity scan pulse is applied to a scan electrode, a positive polarity address pulse is applied to an address electrode from an address electrode driving circuit, and an address discharge is generated.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: June 19, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Hidenori Ohnuki, Akihiro Machida, Yoshinori Okada, Tomohiro Mitou, Satoshi Yuri
  • Publication number: 20120139825
    Abstract: An electrochromic display device includes a display substrate, a counter substrate facing the display substrate, counter electrodes arranged on the counter substrate, an electrolyte layer arranged between the display substrate and the counter electrodes, display electrodes separately arranged from one another between the display substrate and the counter electrodes, electrochromic layers to develop or reduce a color by redox reactions, the electrochromic layers being formed on the respective display electrodes arranged such that the electrochromic layers face the set of the counter electrodes, a voltage applying unit to select one of the display electrodes to connect the selected display electrode and the counter electrodes to apply a voltage between the connected display electrode and counter electrodes, a disconnecting unit to disconnect the unselected display electrodes from the counter electrodes, and an interelectrode connecting unit to connect the display electrodes.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 7, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tohru YASHIRO, Shigenobu Hirano, Yoshihisa Naijo, Koh Fujimura, Akishige Murakami, Hiroyuki Takahashi, Yoshinori Okada
  • Publication number: 20120139824
    Abstract: A disclosed electrochromic display element includes a display substrate, a counter substrate facing the display substrate, display electrodes arranged between the display substrate and the counter substrate, electrochromic layers formed on the respective display electrodes, a plurality of drive elements arranged on the counter substrate at predetermined intervals, a plurality of pixel electrodes arranged on the drive elements, a charge retention layer formed over the pixel electrodes as a continuous layer, the charge retention layer being formed of a mixed film including a polymer and one of electric conductive microparticles and semiconductor microparticles, and an electrolyte layer sandwitched between the display substrate and the charge retention layer.
    Type: Application
    Filed: November 30, 2011
    Publication date: June 7, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hiroyuki TAKAHASHI, Yoshinori OKADA, Tohru YASHIRO, Akishige MURAKAMI, Shigenobu HIRANO, Yoshihisa NAIJO
  • Publication number: 20110309347
    Abstract: An organic electroluminescence device includes a cathode, a stacked structure provided on the cathode and including an organic layer that includes an organic light emitting layer, and a transparent anode provided on the stacked structure, The transparent anode includes a metal oxide and a conductive polymer.
    Type: Application
    Filed: June 17, 2011
    Publication date: December 22, 2011
    Inventors: YOSHINORI OKADA, HIROYUKI TAKAHASHI
  • Publication number: 20110272781
    Abstract: A package-on-package includes a semiconductor package, and a coil provided at the semiconductor package. The semiconductor package includes a bottom face, and a solder ball protruded from the bottom face. An axis of the coil is inclined with respect to the normal line of the bottom face.
    Type: Application
    Filed: July 2, 2009
    Publication date: November 10, 2011
    Inventors: Akira Tada, Hiroki Tanabe, Yoshinori Okada, Ikuo Kudo
  • Publication number: 20110222139
    Abstract: An electrochromic display apparatus is disclosed that includes a stacked body which includes a display electrode and an electrochromic layer that are stacked on each other; a film which includes through holes, and is disposed on one of the display electrode and the electrochromic layer of the stacked body; and an opposed substrate on which an opposed electrode that faces toward the display electrode is formed.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 15, 2011
    Applicant: RICOH COMPANY, LTD.,
    Inventors: Yoshihisa NAIJO, Tohru Yashiro, Shigenobu Hirano, Masahiro Yanagisawa, Masahiro Masuzawa, Akishige Murakami, Hiroyuki Takahashi, Koh Fujimura, Yoshinori Okada
  • Publication number: 20100141625
    Abstract: In a driving method of a plasma display panel having a plurality of first electrodes provided so as to correspond to phosphors of a plurality of emitted light colors and having a plurality of second electrodes disposed so as to intersect with the first electrodes, the first electrodes for each of the emitted light colors that are provided so as to correspond to at least one of the phosphors of the emitted light colors among the first electrodes are brought into an electrically open state at the part of driving timings in a driving period. By doing so, gas discharge currents that flow through the first electrodes for each of the emitted light colors can be suppressed.
    Type: Application
    Filed: February 17, 2010
    Publication date: June 10, 2010
    Inventors: Yuji SANO, Akihiro Takagi, Tomokatsu Kishi, Toyoshi Kawada, Yoshinori Okada
  • Patent number: 7710351
    Abstract: A load drive circuit, successfully suppressed in unnecessary electromagnetic wave generation through suppressing transition time in the drive voltage waveform even under a reduced effective load, and a display device using this circuit are provided, wherein the circuit comprises a drive circuit inversively amplifying a signal, used for driving a load, input through an input terminal, and output from an output terminal; a first current source connected to the input terminal of the drive circuit and being capable of controlling current output; and a first switch circuit connected between the input terminal of the drive circuit and a first reference potential point.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: May 4, 2010
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Yuji Sano, Toyoshi Kawada, Yoshinori Okada
  • Patent number: 7598929
    Abstract: A PDP apparatus in which a large-sized plasma display panel, whose electrodes have large drive requirements, is driven by using already existing driver ICs, and a PDP apparatus in which the operating conditions when a plasma display panel is driven by using a plurality of driver ICs have been improved, are disclosed. According to a first aspect, one electrode of the plasma display panel is driven by combining a plurality of drive signals output from the driver IC and, according to a second aspect, in a configuration in which a plurality of electrodes are driven by a plurality of identical driver ICs, when some of a plurality of outputs of the driver ICs are not connected to the electrodes and not used, the unused outputs are distributed in each driver IC as evenly as possible.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: October 6, 2009
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Hidenori Ohnuki, Yoshinori Okada
  • Publication number: 20090244042
    Abstract: A plasma display panel driving method and a plasma display apparatus are disclosed in which a suitable address discharge can be performed at a next scanning timing by reducing voltage changes in a sustain electrode and a scan electrode caused by a change of an address pulse when the address pulse is applied to an address electrode at a scanning timing. The plasma display panel driving method drives a plasma display panel which includes plural scan electrodes extending in a first direction and plural address electrodes extending in a second direction orthogonal to the first direction. In the method, a negative polarity scan pulse is applied to a scan electrode, a positive polarity address pulse is applied to an address electrode from an address electrode driving circuit, and an address discharge is generated.
    Type: Application
    Filed: December 19, 2008
    Publication date: October 1, 2009
    Inventors: Hidenori Ohnuki, Akihiro Machida, Yoshinori Okada, Tomohiro Mitou, Satoshi Yuri
  • Patent number: 7550678
    Abstract: In a plasma display module, a flexible substrate is strengthened and a mounting structure for alleviating stresses is provided, thereby preventing the metal fatigue of wirings. In a PDP (Plasma Display Panel) module, a metal plate and a flexible substrate constituting a driver module are provided. On the flexible substrate, wirings not connected to electrodes of the panel (independent linear patterns) are disposed on an outer side of wirings and near an edge portion of the metal plate to which the flexible substrate is attached.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: June 23, 2009
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Tomoyuki Kawamura, Taizo Ohno, Yoshinori Okada, Takashi Sasaki, Hideki Isohata, Kenji Ishiwata
  • Publication number: 20090146985
    Abstract: A source driver includes a ladder circuit for outputting multilevel gradation voltages by resistance voltage division, a first decoder for selecting one of the gradation voltages which corresponds to the inputted image data to output the selected gradation voltage, an external power supply for supplying multilevel pre-charging voltages, a second decoder for selecting one of the pre-charging voltages which corresponds to the image data from, an operational amplifier for outputting the driving voltage corresponding to the inputted gradation voltage to the source electrode, a pre-charging switch interconnected between the operational amplifier and the second decoder, and a controller for controlling the pre-charging switch.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 11, 2009
    Applicant: Oki Semiconductor Co., Ltd.
    Inventors: Yoshinori Okada, Atsuhiro Miwata
  • Patent number: 7511441
    Abstract: A semiconductor integrated circuit capable of reducing the influence of the difference in ambient temperature etc. and realizing a stable phase adjustment circuit has been disclosed. The semiconductor integrated circuit comprises a delay time adjustment circuit for delaying the rising edge or the falling edge of an input signal and changing the amount of delay, a comparison circuit for comparing an output signal from the delay time adjustment circuit with a predetermined voltage, a high-level shift circuit for shifting an output signal from the comparison circuit into a signal on the basis of an output reference voltage, and an output amplifier circuit for amplifying an output signal from the high-level shift circuit and outputting a signal for driving the semiconductor device, wherein the delay time adjustment circuit, the comparison circuit, the high-level shift circuit, and the output amplifier circuit are formed on a single chip.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: March 31, 2009
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Makoto Onozawa, Tomokatsu Kishi, Yoshinori Okada, Masatoshi Hira
  • Publication number: 20080055288
    Abstract: A flat display apparatus comprises a flat display panel in which at least some of display electrodes are formed from a scan electrode and an address electrode arranged so as to intersect each other, and has a characteristic such that as the amount of driving load of the flat display panel increases, the activation energy of discharge gas increases and the panel driving voltage decreases. In a driving method for the flat display apparatus, when the amount of driving load of the flat display panel increases (S1 to S4), the driving voltage of the scanning electrode or the driving voltage (Vd) of the address electrode is reduced.
    Type: Application
    Filed: April 11, 2005
    Publication date: March 6, 2008
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Toyoshi Kawada, Katsuhiro Ishida, Yuji Sano, Yoshinori Okada
  • Publication number: 20080012608
    Abstract: Objective To provide a current driving circuit that can improve the driving current setting accuracy. Means to solve Transistors 1-1-1-n of bias voltage generating circuit 1 and transistors 3-1-3-8 of output circuits 2-1-2-160 are distributed and formed in a common region on a semiconductor substrate. In this way, the threshold voltage of the synthetic transistor constituted by transistors 1-1-1-n connected in parallel with each other is close to the average threshold voltage of transistors 3-1-3-8 of output circuits 2-1-2-160. As a result, the error in threshold voltage between this synthetic transistor and transistors 3-1-3-8 of output circuits 2-1-2-160 is about half the variation in threshold voltage of transistors 3-1-3-8 of output circuits 2-1-2-160. In other words, the error in threshold voltage of the transistors that constitute the current mirror circuit can be reduced.
    Type: Application
    Filed: January 6, 2006
    Publication date: January 17, 2008
    Inventors: Atsushi Sudoh, Yoshinori Okada, Seiji Murakami, Atsuhiro Miwata
  • Patent number: 7193403
    Abstract: A current driver that can control variation in the consumed current in conjunction with variation in the setting value of the driving current. The mirror current of transistors Q2-0 to Q2-7 at each of output circuits 10-1 to 10-160 keeps flowing through output terminal To1 or node N8 irrespective of the setting value of the pixel data. Also, the mirror current of transistor Q4D keeps flowing in the series circuit of transistors Q4D and Q5D irrespective of the setting value of the pixel data. Consequently, even when the setting value of the driving current varies in various ways, the current consumed in each output circuit can still be kept constant. As a result, it is possible to prevent variation in the voltage of the power supply line in conjunction with variation of the consumed current, and it is possible to reduce fluctuation in the driving current between output channels.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: March 20, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Atsushi Sudoh, Yoshinori Okada, Seiji Murakami, Atsuhiro Miwata
  • Publication number: 20060238691
    Abstract: In a plasma display module, a flexible substrate is strengthened and a mounting structure for alleviating stresses is provided, thereby preventing the metal fatigue of wirings. In a PDP (Plasma Display Panel) module, a metal plate and a flexible substrate constituting a driver module are provided. On the flexible substrate, wirings not connected to electrodes of the panel (independent linear patterns) are disposed on an outer side of wirings and near an edge portion of the metal plate to which the flexible substrate is attached.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 26, 2006
    Inventors: Tomoyuki Kawamura, Taizo Ohno, Yoshinori Okada, Takashi Sasaki, Hideki Isohata, Kenji Ishiwata