Patents by Inventor Katsuhiro Kanauchi

Katsuhiro Kanauchi 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).

  • Patent number: 10283568
    Abstract: A first luminous body is formed on a substrate and is linear. A second luminous body is also formed on the substrate and is linear. The second luminous body extends in parallel with the first luminous body. A first anode and a first cathode are formed on the substrate, and supply electric power to the first luminous body. A second anode and a second cathode are also formed on the substrate, and supply electric power to the second luminous body. The first anode and the first cathode extend in parallel with each other, and the second anode and the second cathode extend in parallel with each other. In a range overlapping with the first luminous body when seen in a plan view, the first anode is not connected to the second anode, and the first cathode is not connected to the second cathode.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 7, 2019
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Shuichi Seki, Masaki Murakata, Katsuhiro Kanauchi
  • Patent number: 9936559
    Abstract: A light-emitting device (10) includes a first light-emitting region (100) and a second light-emitting region (200). The first light-emitting region (100) emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region (200) emits a light ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device (10) are improved.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: April 3, 2018
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Shuichi Seki, Shigehiro Umetsu, Hiroki Tan, Katsuhiro Kanauchi
  • Publication number: 20160329382
    Abstract: A first luminous body is formed on a substrate and is linear. A second luminous body is also formed on the substrate and is linear. The second luminous body extends in parallel with the first luminous body. A first anode and a first cathode are formed on the substrate, and supply electric power to the first luminous body. A second anode and a second cathode are also formed on the substrate, and supply electric power to the second luminous body. The first anode and the first cathode extend in parallel with each other, and the second anode and the second cathode extend in parallel with each other. In a range overlapping with the first luminous body when seen in a plan view, the first anode is not connected to the second anode, and the first cathode is not connected to the second cathode.
    Type: Application
    Filed: July 20, 2016
    Publication date: November 10, 2016
    Inventors: Shuichi Seki, Masaki Murakata, Katsuhiro Kanauchi
  • Publication number: 20160323965
    Abstract: A light-emitting device (10) includes a first light-emitting region (100) and a second light-emitting region (200). The first light-emitting region (100) emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region (200) emits a light ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device (10) are improved.
    Type: Application
    Filed: July 7, 2016
    Publication date: November 3, 2016
    Inventors: Shuichi SEKI, Shigehiro UMETSU, Hiroki TAN, Katsuhiro KANAUCHI
  • Patent number: 9420662
    Abstract: A light-emitting device (10) includes a first light-emitting region (100) and a second light-emitting region (200). The first light-emitting region (100) emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region (200) emits alight ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device (10) are improved.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 16, 2016
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Shuichi Seki, Shigehiro Umetsu, Hiroki Tan, Katsuhiro Kanauchi
  • Patent number: 9419059
    Abstract: A first luminous body is formed on a substrate and is linear. A second luminous body is also formed on the substrate and is linear. The second luminous body extends in parallel with the first luminous body. A first anode and a first cathode are formed on the substrate, and supply electric power to the first luminous body. A second anode and a second cathode are also formed on the substrate, and supply electric power to the second luminous body. The first anode and the first cathode extend in parallel with each other, and the second anode and the second cathode extend in parallel with each other. In a range overlapping with the first luminous body when seen in a plan view, the first anode is not connected to the second anode, and the first cathode is not connected to the second cathode.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: August 16, 2016
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Shuichi Seki, Masaki Murakata, Katsuhiro Kanauchi
  • Patent number: 9215766
    Abstract: A drive device for a light-emitting element that improves accuracy while driving the light-emitting element at small currents for which a comparatively simple configuration is provided. The drive device includes detecting means, comparing means, a driving voltage source, and offset means. The detecting means detects a voltage corresponding to a current flowing through a first resistor for current detection. The first resistor is coupled to a light-emitting element in series. The comparing means compares a magnitude of the detection voltage of the detecting unit with a comparison voltage. The driving voltage source applies a voltage corresponding to a comparison result by the comparing means to a series circuit of the light-emitting element and the first resistor. The offset means corrects the voltage corresponding to a current flowing through the first resistor by a correction voltage.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: December 15, 2015
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Hideo Ochi, Nobuhiko Saegusa, Katsuhiro Kanauchi
  • Publication number: 20150270316
    Abstract: A first luminous body is formed on a substrate and is linear. A second luminous body is also formed on the substrate and is linear. The second luminous body extends in parallel with the first luminous body. A first anode and a first cathode are formed on the substrate, and supply electric power to the first luminous body. A second anode and a second cathode are also formed on the substrate, and supply electric power to the second luminous body. The first anode and the first cathode extend in parallel with each other, and the second anode and the second cathode extend in parallel with each other. In a range overlapping with the first luminous body when seen in a plan view, the first anode is not connected to the second anode, and the first cathode is not connected to the second cathode.
    Type: Application
    Filed: September 10, 2012
    Publication date: September 24, 2015
    Applicants: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Shuichi Seki, Masaki Murakata, Katsuhiro Kanauchi
  • Publication number: 20150230314
    Abstract: A light-emitting device (10) includes a first light-emitting region (100) and a second light-emitting region (200). The first light-emitting region (100) emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region (200) emits alight ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device (10) are improved.
    Type: Application
    Filed: September 5, 2012
    Publication date: August 13, 2015
    Applicants: TOHOKU PIONEER CORPORATION, PIONEER CORPORATION
    Inventors: Shuichi Seki, Shigehiro Umetsu, Hiroki Tan, Katsuhiro Kanauchi
  • Publication number: 20130320884
    Abstract: A drive device for a light-emitting element that improves accuracy while driving the light-emitting element at small currents for which a comparatively simple configuration is provided. The drive device includes detecting means, comparing means, a driving voltage source, and offset means. The detecting means detects a voltage corresponding to a current flowing through a first resistor for current detection. The first resistor is coupled to a light-emitting element in series. The comparing means compares a magnitude of the detection voltage of the detecting unit with a comparison voltage. The driving voltage source applies a voltage corresponding to a comparison result by the comparing means to a series circuit of the light-emitting element and the first resistor. The offset means corrects the voltage corresponding to a current flowing through the first resistor by a correction voltage.
    Type: Application
    Filed: February 1, 2011
    Publication date: December 5, 2013
    Applicants: TOHOKU PIONEER CORPORATION, Pioneer Corporation
    Inventors: Hideo Ochi, Nobuhiko Saegusa, Katsuhiro Kanauchi
  • Patent number: 8125479
    Abstract: Treating light emitting elements 2 in all the display pixels in a light emitting display panel as objects, a maximum value of the forward voltages is drawn by a multi-input comparator 3a and a peak hold circuit 3b. Based on the maximum value of the forward voltages, a voltage boost circuit 6 switching operates a power FET to supply a boosted output by this operation to a constant current circuit 1 as the operational voltage VH. In the case where the maximum value of the forward voltages increases due to trouble or the like and based on this increment the operational voltage VH excessively increases, the operation of the voltage boost circuit 6 is stopped by a control output from an analog comparator 7a which functions as voltage limiter.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: February 28, 2012
    Assignee: Tohoku Pioneer Corporation
    Inventors: Akinori Hayafuji, Katsuhiro Kanauchi
  • Publication number: 20100220120
    Abstract: A drive apparatus is provided which can calculate a suitable APL value when driving a color display panel using PLE control. Further, a drive apparatus is provided which can inhibit output capacity of a power supply circuit by controlling display brightness according to a lighting rate of a pixel. An APL calculation means 20 is provided with a weighting means 22A for performing weighting according to a light emitting current rate of each color at the time of displaying a gray scale with respect to a picture signal of each of the colors R, G, and B. Being averaged by an averaging means 23, each signal weighted by this weighting means 22A acquires an APL value. The peak brightness control means 29 is controlled using this APL value so that PLE operation of controlling a peak brightness of the picture signal is realized.
    Type: Application
    Filed: April 30, 2010
    Publication date: September 2, 2010
    Applicant: TOHOKU PIONEER CORPORATION
    Inventors: Mayumi Ozaki, Katsuhiro Kanauchi, Akinori Hayafuji
  • Publication number: 20100020061
    Abstract: A display panel 1, in which light-emitting elements E11 to EMN are connected in a matrix state to the respective intersecting positions of a plurality of signal lines A1 to AM and a plurality of scan lines K1 to KN, is used. A scan line Kn is set to a scan selection potential (ground potential), and a pulse voltage from a pulse power supply 4 is applied to the other scan lines. When switches Sa1 to SaM as data selection means in a data driver 2 are placed in a state shown in a drawing, respective currents are applied to light-emitting elements to be emitted in a forward direction as rush currents through the parasitic capacitances of light-emitting elements in a non-scan state when the pulse voltage rises.
    Type: Application
    Filed: October 25, 2006
    Publication date: January 28, 2010
    Applicants: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Katsuhiro Kanauchi, Akinori Hayafuji, Shuichi Seki
  • Publication number: 20090244051
    Abstract: The present invention is to provide a display device which efficiently drives light emitting display pixels and which can restrain an excessive increment of an operational voltage outputted from a power supply circuit due to trouble of the circuit or the like. Treating light emitting elements 2 in all the display pixels in a light emitting display panel as objects, a maximum value of the forward voltages is drawn by a multi-input comparator 3a and a peak hold circuit 3b. Based on the maximum value of the forward voltages, a voltage boost circuit 6 switching operates a power FET to supply a boosted output by this operation to a constant current circuit 1 as the operational voltage VH. In the case where the maximum value of the forward voltages increases due to trouble or the like and based on this increment the operational voltage VH excessively increases, the operation of the voltage boost circuit 6 is stopped by a control output from an analog comparator 7a which functions as a voltage limiter.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 1, 2009
    Applicant: TOHOKU PIONEER CORPORATION
    Inventors: Akinori Hayafuji, Katsuhiro Kanauchi
  • Patent number: 7557802
    Abstract: Treating light emitting elements 2 in all the display pixels in a light emitting display panel as objects, a maximum value of the forward voltages is drawn by a multi-input comparator 3a and a peak hold circuit 3b. Based on the maximum value of the forward voltages, a voltage boost circuit 6 switching operates a power FET to supply a boosted output by this operation to a constant current circuit 1 as the operational voltage VH. In the case where the maximum value of the forward voltages increases due to trouble or the like and based on this increment the operational voltage VH excessively increases, the operation of the voltage boost circuit 6 is stopped by a control output from an analog comparator 7a which functions as a voltage limiter.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: July 7, 2009
    Assignee: Tohoku Pioneer Corporation
    Inventors: Akinori Hayafuji, Katsuhiro Kanauchi
  • Patent number: 7471288
    Abstract: A clock signal in synchronization with a data writing signal, every scanning line, which is supplied from a light-emitting control circuit 4 to a scanning driver 6, is supplied to an oscillator 12 which generates a reference switching signal, according to a PWM method, in a DC-DC converter 8. Thereby, the timing at data writing every scanning line is in synchronization with the phase of a ripple component superimposed on a driving voltage Va from the DC-DC converter 8. Accordingly, a problem that there is caused a state in which light-emitting intensity is different every scanning line can be solved because the same voltage Vgs between a gate and a source is supplied every scanning line to a light-emitting driving transistor Tr2 at any time even if the ripple component by switching of the DC-DC converter is superimposed on the driving voltage Va.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: December 30, 2008
    Assignee: Tohoku Pioneer Corporation
    Inventors: Akinori Hayafuji, Katsuhiro Kanauchi
  • Publication number: 20070085785
    Abstract: A drive apparatus is provided which can calculate a suitable APL value when driving a color display panel using PLE control. Further, a drive apparatus is provided which can inhibit output capacity of a power supply circuit by controlling display brightness according to a lighting rate of a pixel. An APL calculation means 20 is provided with a weighting means 22A for performing weighting according to a light emitting current rate of each color at the time of displaying a gray scale with respect to a picture signal of each of the colors R, G, and B. Being averaged by an averaging means 23, each signal weighted by this weighting means 22A acquires an APL value. The peak brightness control means 29 is controlled using this APL value so that PLE operation of controlling a peak brightness of the picture signal is realized.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 19, 2007
    Applicant: TOHOKU PIONEER CORPORATION
    Inventors: Mayumi Ozaki, Katsuhiro Kanauchi, Akinori Hayafuji
  • Publication number: 20070063934
    Abstract: One frame (period) is divided into a plurality of sub-frames including a lighting period and a non-lighting period for a pixel, and gradation control is carried out by selecting the above-mentioned sub-frames and by summing the lighting periods of the pixel within one frame period. In addition, proportions of the above-mentioned lighting period and the non-lighting period for every sub-frame are changed so as to perform selection operation of a gamma value of a gradation characteristic. A sum of the lighting periods within one frame period of the pixel at the time of setting the maximum gradation by way of the above-mentioned gradation control is set to be the same at the time of selecting any gamma value selected by the above-mentioned gamma value selection operation. Thus, it is possible to control luminosity changes generated when switching gamma values of gradation characteristics, especially at the time of the maximum gradation, and reduce degrees of a user's sense of incongruity.
    Type: Application
    Filed: September 14, 2006
    Publication date: March 22, 2007
    Applicant: TOHOKU PIONEER CORPORATION
    Inventors: Mayumi Ozaki, Katsuhiro Kanauchi
  • Patent number: 7193589
    Abstract: In a drive device for an active type light emitting display panel which can apply a reverse bias voltage to an EL element, in order to be able to compensate deterioration in light-emitting efficiency of the EL element accompanied by applying of the reverse bias voltage and the like, one pixel 10 is composed of a controlling TFT (Tr1), the driving TFT (Tr2), a capacitor C1, and the EL element E1. Switching switches SW1, SW2 mutually enables a supplying state of a forward current to the EL element E1 and an applying state of the reverse bias voltage to be selected. In one control form according to the present invention, when the applying state of the reverse bias voltage shifts to the supplying state of the forward current, by switching one switch first, the anode and cathode of the EL element E1 are made to the same electrical potential to allow electrical charges to be discharged.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: March 20, 2007
    Assignee: Tohoku Pioneer Corporation
    Inventors: Takayoshi Yoshida, Katsuhiro Kanauchi
  • Publication number: 20060261744
    Abstract: A constant electric current value supplied to a monitoring element Ex is controlled based on dimmer information, during which time a forward voltage Vf is produced and acquired by a peak hold circuit 9. Based on output of the peak hold circuit 9, an output voltage VH of a DC-DC converter 5 is controlled, and provided as a drive voltage for a display panel.
    Type: Application
    Filed: May 9, 2006
    Publication date: November 23, 2006
    Applicant: TOHOKU PIONEER CORPORATION
    Inventors: Akinori Hayafuji, Katsuhiro Kanauchi