Patents by Inventor Tsukasa Yagi

Tsukasa Yagi 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: 20170358635
    Abstract: To provide a display device capable of lowering power consumption while reducing a weight by using the organic electroluminescence element for the backlight. A display device that is provided with a light-transmitting shutter element panel wherein shutter elements that control light transmission are arranged in a matrix and with a backlight panel that has organic electroluminescence elements and that is arranged so as to overlap the shutter element panel. The area in which the shutter elements are arrayed on the shutter element panel is partitioned into partitioned areas, and the organic electroluminescence elements are arranged so as to individually overlap the partitioned area that corresponds thereto.
    Type: Application
    Filed: October 5, 2015
    Publication date: December 14, 2017
    Applicant: KONICA MINOLTA, INC.
    Inventors: Kazuyoshi OMATA, Tsukasa YAGI
  • Publication number: 20170307928
    Abstract: Provided is a display device that can perform stable field-sequential drive. The display device is provided with a backlight (100) and with a field-sequential display panel (200). The backlight has light-emitting units that are organic electroluminescence elements that can emit light of the three primary colors red, green, and blue. At least one electrode of the organic electroluminescence elements comprises Ag or an alloy that includes Ag as a principal component.
    Type: Application
    Filed: October 20, 2015
    Publication date: October 26, 2017
    Inventors: Kazuyoshi OMATA, Tsukasa YAGI
  • Publication number: 20170309860
    Abstract: Provided is a display device that can reduce electric power consumption. The display device is provided with a backlight (100) and with a field-sequential display panel (200). The backlight has light-emitting units that comprise an organic electroluminescence element in which are layered a plurality of light-emitting units that emit light of different colors. The light-emitting units that can emit white light or yellow light are provided furthest to a light-emission-surface side.
    Type: Application
    Filed: October 20, 2015
    Publication date: October 26, 2017
    Applicant: KONICA MINOLTA, INC.
    Inventors: Kazuyoshi OMATA, Takatoshi TSUJIMURA, Tsukasa YAGI
  • Patent number: 9772095
    Abstract: An object of the present invention is to provide an organic EL device that includes an electrode having a light-emitting function and a touch sensing function, an organic electroluminescent module that includes a specific controlling circuit and can contribute to reduction in sizes and thickness and simplified production steps of the device, and a smart device and an illumination device each including the organic electroluminescent module. The organic electroluminescent module of the present invention has a touch sensing function and includes a capacitive touch sensing circuit unit and a light-emitting device driving circuit unit including a light-emitting device driving circuit section for driving an organic electroluminescent panel. The organic electroluminescent panel includes paired opposite plate electrodes therein.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: September 26, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kazuyoshi Omata, Tsukasa Yagi, Kuniaki Shida
  • Patent number: 9755166
    Abstract: A luminescent device that has at least an anode layer (32), a cathode layer (36), and an organic EL layer (34) formed on a transparent substrate (30), and has the organic EL layer (34) placed between the anode layer (32) and the cathode layer (36) is disclosed. In this luminescent device, notches (22) are formed at the rim portion of the transparent substrate, and patterning is performed on the transparent substrate (30) so that the organic EL layer (34) avoids the notches (22), and the anode layer (32) and the cathode layer (34) overlap the organic EL layer (34). Part of the anode layer (32) and part of the cathode layer (36) are exposed through the respective notches (22) of the transparent substrate (30).
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: September 5, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Masaru Iwagaki, Tsukasa Yagi, Masahiro Morikawa, Nobuya Miki
  • Publication number: 20170123541
    Abstract: An object of the present invention is to provide an organic electroluminescent module having a touch sensing function, the organic electroluminescent module containing: a touch sensing circuit unit containing a capacitive touch sensing circuit section; and a light-emitting device driving circuit unit containing a light-emitting device driving circuit section for driving an organic electroluminescent panel, wherein the organic electroluminescent panel has a configuration composed of two or more organic electroluminescent elements each laid out in series, the organic electroluminescent element comprises paired opposite plate electrodes therein, one of the paired electrodes is a touch sensing electrode, the touch sensing electrode being connected to the touch sensing circuit unit, and the two or more organic electroluminescent elements laid out in series respectively have an independent sensing device to carry out touch sensing independently.
    Type: Application
    Filed: August 14, 2015
    Publication date: May 4, 2017
    Inventors: Kazuyoshi OMATA, Tsukasa YAGI
  • Patent number: 9574757
    Abstract: An object of the present invention is to provide an organic EL device that includes an electrode having a light-emitting function and a touch sensing function, an organic electroluminescent module that includes a specific controlling circuit and can contribute to reduction in sizes and thickness and simplified production steps of the device, and a smart device and an illumination device each including the organic electroluminescent module. The organic electroluminescent module of the present invention has a touch sensing function and includes a touch sensing circuit unit and a light-emitting device driving circuit unit including a light-emitting device driving circuit section for driving an organic electroluminescent panel. The organic electroluminescent panel includes paired opposite electrodes therein. The paired electrodes are connected to the light-emitting device driving circuit unit, and one of the paired electrodes is a touch sensing electrode that is connected to the touch sensing circuit unit.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: February 21, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kazuyoshi Omata, Tsukasa Yagi, Kuniaki Shida
  • Publication number: 20160363304
    Abstract: An object of the present invention is to provide an organic EL device that includes an electrode having a light-emitting function and a touch sensing function, an organic electroluminescent module that includes a specific controlling circuit and can contribute to reduction in sizes and thickness and simplified production steps of the device, and a smart device and an illumination device each including the organic electroluminescent module. The organic electroluminescent module of the present invention has a touch sensing function and includes a capacitive touch sensing circuit unit and a light-emitting device driving circuit unit including a light-emitting device driving circuit section for driving an organic electroluminescent panel. The organic electroluminescent panel includes paired opposite plate electrodes therein.
    Type: Application
    Filed: September 18, 2014
    Publication date: December 15, 2016
    Inventors: Kazuyoshi OMATA, Tsukasa YAGI, Kuniaki SHIDA
  • Publication number: 20160363305
    Abstract: An object of the present invention is to provide an organic EL device that includes an electrode having a light-emitting function and a touch sensing function, an organic electroluminescent module that includes a specific controlling circuit and can contribute to reduction in sizes and thickness and simplified production steps of the device, and a smart device and an illumination device each including the organic electroluminescent module. The organic electroluminescent module of the present invention has a touch sensing function and includes a touch sensing circuit unit and a light-emitting device driving circuit unit including a light-emitting device driving circuit section for driving an organic electroluminescent panel. The organic electroluminescent panel includes paired opposite electrodes therein. The paired electrodes are connected to the light-emitting device driving circuit unit, and one of the paired electrodes is a touch sensing electrode that is connected to the touch sensing circuit unit.
    Type: Application
    Filed: September 18, 2014
    Publication date: December 15, 2016
    Inventors: Kazuyoshi OMATA, Tsukasa YAGI, Kuniaki SHIDA
  • Patent number: 9497805
    Abstract: An organic EL element driving device that drives an organic EL element with a constant current is provided. The organic EL element driving device includes a power supply connected in series with the organic EL element, and a current control unit connected in series with the organic EL element. The current control unit includes a current detection circuit having a resistor for detecting the value of the current passing through the organic EL element. The current control unit sets a prescribed value for the current to be passed through the organic EL element in accordance with the luminance control, and performs control such that the current passing through the organic EL element has the prescribed value in accordance with an output from the current detection circuit. A value of the resistor in the current detection circuit is varied in accordance with the luminance control.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: November 15, 2016
    Assignee: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Tsukasa Yagi, Kouichi Ishida, Yuichi Iketsu, Kouji Miyawaki
  • Publication number: 20160164098
    Abstract: Provided is a flexible secondary battery that can achieve both flexibility and high capacity. The flexible secondary battery has flexibility and includes a lithium ion secondary battery including: a positive electrode and a negative electrode at least one of which contains a flexibilizer in its active material layer; and a Mn-containing active material contained in the positive electrode, wherein a degree of decompression inside the lithium ion secondary battery is 100 to 1000 Pa.
    Type: Application
    Filed: June 26, 2014
    Publication date: June 9, 2016
    Applicant: Konica Minolta, Inc.
    Inventors: Hidekane Ozeki, Akira Kawakami, Tsukasa Yagi, Kazuhiro Yoshida, Takeshi Hakii, Toshiya Kondo
  • Publication number: 20150380681
    Abstract: An object of the present invention is to provide an organic electroluminescent element, which has a light emitting efficiency improved by suppressing the deterioration of storage property under a high temperature-high humidity atmosphere due to the recess-projection state of a surface of a gas barrier layer or a light scattering layer, or the like that is in contact with a light emitting unit, and by suppressing the occurrence of a short-circuit. The organic electroluminescent elements 100 and 400 in the present invention are each characterized by including a film substrate 4, and at least, a gas barrier layer 5, a smooth layer 1, and a light emitting unit 3 that is sandwiched between a pair of electrodes 2, 6 and has an organic functional layer, which are stacked in this order on the film substrate, wherein the gas barrier layer 5 is constituted by at least two kinds of gas barrier layers 5 that are different from each other in the composition or distribution state of the constitutional elements.
    Type: Application
    Filed: February 10, 2014
    Publication date: December 31, 2015
    Inventors: Keiichi FURUKAWA, Tsukasa YAGI
  • Publication number: 20150280152
    Abstract: A luminescent device that has at least an anode layer (32), a cathode layer (36), and an organic EL layer (34) formed on a transparent substrate (30), and has the organic EL layer (34) placed between the anode layer (32) and the cathode layer (36) is disclosed. In this luminescent device, notches (22) are formed at the rim portion of the transparent substrate, and patterning is performed on the transparent substrate (30) so that the organic EL layer (34) avoids the notches (22), and the anode layer (32) and the cathode layer (34) overlap the organic EL layer (34). Part of the anode layer (32) and part of the cathode layer (36) are exposed through the respective notches (22) of the transparent substrate (30).
    Type: Application
    Filed: October 16, 2013
    Publication date: October 1, 2015
    Applicant: KONICA MINOLTA, INC.
    Inventors: Masaru Iwagaki, Tsukasa Yagi, Masahiro Morikawa, Nobuya Miki
  • Patent number: 8710748
    Abstract: Disclosed is an illumination apparatus, which is constituted by a plurality of OLED devices and makes it possible to improve an accuracy of a dimming control operation. The apparatus is provided with a driving electric power source including: a pulse generating section; an OLED driving section; a first voltage source; a second voltage source; a current source; a switchover section that conducts a switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is increasing, and also conducts another switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is decreasing; and an OLED illumination disabling section that makes the second voltage source supply the second electric power to the OLED unit, only during the time when each of the pulses is the OFF state.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: April 29, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Yuichi Iketsu, Tsukasa Yagi, Kouichi Ishida
  • Publication number: 20130088174
    Abstract: An organic EL element driving device that drives an organic EL element with a constant current is provided. The organic EL element driving device includes a power supply connected in series with the organic EL element, and a current control unit connected in series with the organic EL element. The current control unit includes a current detection circuit having a resistor for detecting the value of the current passing through the organic EL element. The current control unit sets a prescribed value for the current to be passed through the organic EL element in accordance with the luminance control, and performs control such that the current passing through the organic EL element has the prescribed value in accordance with an output from the current detection circuit. A value of the resistor in the current detection circuit is varied in accordance with the luminance control.
    Type: Application
    Filed: June 13, 2011
    Publication date: April 11, 2013
    Inventors: Tsukasa Yagi, Kouichi Ishida, Yuichi Iketsu, Kouji Miyawaki
  • Publication number: 20120242233
    Abstract: Disclosed is an illumination apparatus, which is constituted by a plurality of OLED devices and makes it possible to improve an accuracy of a dimming control operation. The apparatus is provided with a driving electric power source including: a pulse generating section; an OLED driving section; a first voltage source; a second voltage source; a current source; a switchover section that conducts a switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is increasing, and also conducts another switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is decreasing; and an OLED illumination disabling section that makes the second voltage source supply the second electric power to the OLED unit, only during the time when each of the pulses is the OFF state.
    Type: Application
    Filed: November 22, 2010
    Publication date: September 27, 2012
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Yuichi Iketsu, Tsukasa Yagi, Kouichi Ishida
  • Patent number: 7777536
    Abstract: A synchronization circuit includes a first flip-flop circuit to hold an input signal which is asynchronous to a clock signal by the clock signal, and output an output signal, a second flip-flop circuit to hold the input signal by a signal of an opposite phase to the clock signal and output a signal, a comparing unit to compare the input signal and the output signal of the first flip-flop circuit and output a signal with a high or low level depending on whether the input signal and the output signal of the first flip-flop circuit have the same level, a selection unit to select one of the output signal of the first flip-flop circuit and the output signal of the second flip-flop circuit depending on the level of the signal outputted by the comparing unit, and a third flip-flop circuit to output the output signal selected by the selection unit.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: August 17, 2010
    Assignee: Ricoh Company, Ltd.
    Inventor: Tsukasa Yagi
  • Publication number: 20090153202
    Abstract: A synchronization circuit includes a first flip-flop circuit to hold an input signal which is asynchronous to a clock signal by the clock signal, and output an output signal, a second flip-flop circuit to hold the input signal by a signal of an opposite phase to the clock signal and output a signal, a comparing unit to compare the input signal and the output signal of the first flip-flop circuit and output a signal with a high or low level depending on whether the input signal and the output signal of the first flip-flop circuit have the same level, a selection unit to select one of the output signal of the first flip-flop circuit and the output signal of the second flip-flop circuit depending on the level of the signal outputted by the comparing unit, and a third flip-flop circuit to output the output signal selected by the selection unit.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 18, 2009
    Inventor: Tsukasa Yagi
  • Patent number: 7145538
    Abstract: A liquid crystal display device which carries out matrix driving of a liquid crystal layer by applying AC pulses to the liquid crystal layer through a plurality of scan electrodes and a plurality of data electrodes which face and cross each other. A method of driving such a liquid crystal display comprises a reset step of applying a reset pulse to liquid crystal to reset the liquid crystal to an initial state, a selection step of applying a selection pulse to the liquid crystal to select a final state of the liquid crystal, an evolution step of applying an evolution pulse to the liquid crystal to cause the liquid crystal to evolve to the selected final state. The reset pulse and the evolution pulse have alternating cycles which are longer than that of the selection pulse, and the adjustment of the alternating cycles of the reset pulse and of the evolution pulse are made by changing the pulse waveform applied to each of the scan electrodes.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: December 5, 2006
    Assignee: Minolta Co., Ltd.
    Inventors: Eiji Yamakawa, Tsukasa Yagi, Naoki Masazumi
  • Patent number: 6956595
    Abstract: While light of R, G and B is switched from one to another and directed to a plurality of light shutter elements made of PLZT, a voltage is applied in accordance with image data between individual electrodes for the respective light shutter elements and a common electrode for all the light shutter elements. While a half-wave voltage Vr for light of R is applied to the individual electrodes, the voltage applied to the common electrode is altered to 0V, Vr-Vg and Vr-Vb in synchronization with switch of the three primary colors so that half-wave voltages for the respective colors can be applied to the light shutter elements.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: October 18, 2005
    Assignee: Minolta Co., LTD
    Inventors: Tsukasa Yagi, Ken Matsubara, Tatsuya Kanazawa, Tomohiko Masuda