Patents by Inventor Tomoaki Handa
Tomoaki Handa 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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Patent number: 9093024Abstract: An image display device and method of driving an image display device with alternative repeating of an emission period during which the light emitting element is made to emit light and a non-emission period during which light emission of the light emitting element is stopped. The terminal voltage of a storage capacitor is set to the voltage of a signal line, whereby light emission luminance of the light emitting element in a next emission period is set.Type: GrantFiled: August 29, 2012Date of Patent: July 28, 2015Assignee: Sony CorporationInventors: Tomoaki Handa, Yuuki Seo, Hiroshi Sagawa, Katsuhide Uchino
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Patent number: 8896503Abstract: The present invention sets power supply drive signals DS[1] and DS[2] at a power supply voltage Vcc in a timesharing for odd lines and their subsequent even lines and sets a write signal WS to correspond to the time division setting, thereby sharing a scan line of the write signal WS between the odd lines and the subsequent even lines.Type: GrantFiled: July 27, 2009Date of Patent: November 25, 2014Assignee: Sony CorporationInventors: Tomoaki Handa, Junichi Yamashita, Katsuhide Uchino
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Patent number: 8755048Abstract: A movable body spectrum measuring apparatus including a dictionary data storing unit for storing spectrum data containing wavelength information and light intensity information of an object being measured, and a limitation information storing unit for storing limitation information to regulate the wavelength information into partial wavelength information. The movable body spectrum measuring apparatus further including a discrimination level setting unit for setting selectively the limitation information corresponding to the discrimination level required of the object being measured, a restricting unit for restricting the spectrum data regarding the observation light to the spectrum data composed exclusively of the wavelength information limited by the limitation information, and a discrimination unit for discriminating the object being measured based on the comparison between the restricted spectrum data and the spectrum data regarding the dictionary data storing unit.Type: GrantFiled: May 29, 2009Date of Patent: June 17, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Ryuji Funayama, Shinya Kawamata, Masato Endo, Yasukata Yokochi, Yasuhiro Yoshida, Tomoaki Handa, Kenichi Kitahama
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Patent number: 8704811Abstract: The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line.Type: GrantFiled: October 31, 2013Date of Patent: April 22, 2014Assignee: Sony CorporationInventors: Tomoaki Handa, Takayuki Taneda, Katsuhide Uchino
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Publication number: 20140055431Abstract: The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line.Type: ApplicationFiled: October 31, 2013Publication date: February 27, 2014Applicant: SONY CORPORATIONInventors: Tomoaki Handa, Takayuki Taneda, Katsuhide Uchino
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Patent number: 8605065Abstract: The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line.Type: GrantFiled: June 18, 2013Date of Patent: December 10, 2013Assignee: Sony CorporationInventors: Tomoaki Handa, Takayuki Taneda, Katsuhide Uchino
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Publication number: 20130278573Abstract: The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line.Type: ApplicationFiled: June 18, 2013Publication date: October 24, 2013Inventors: Tomoaki Handa, Takayuki Taneda, Katsuhide Uchino
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Patent number: 8553022Abstract: Disclosed herein is an image display device including a display section, a signal line driving circuit, and a scanning line driving circuit. The display section is formed by arranging pixel circuits in a form of a matrix. The signal line driving circuit is configured to output a driving signal for a signal line to the signal line of the display section. The scanning line driving circuit is configured to output a driving signal for a scanning line to the scanning line of the display section. The pixel circuits each include at least a light emitting element, a driving transistor configured to drive the light emitting element connected to a source by a driving current corresponding to a gate-to-source voltage, a storage capacitor configured to retain the gate-to-source voltage, and a writing transistor configured to set a terminal voltage of the storage capacitor by a voltage of the signal line.Type: GrantFiled: July 22, 2009Date of Patent: October 8, 2013Assignee: Sony CorporationInventors: Tomoaki Handa, Yuuki Seo, Katsuhide Uchino
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Patent number: 8502808Abstract: The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line.Type: GrantFiled: August 12, 2009Date of Patent: August 6, 2013Assignee: Sony CorporationInventors: Tomoaki Handa, Takayuki Taneda, Katsuhide Uchino
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Publication number: 20120320029Abstract: An image display device and method of driving an image display device with alternative repeating of an emission period during which the light emitting element is made to emit light and a non-emission period during which light emission of the light emitting element is stopped. The terminal voltage of a storage capacitor is set to the voltage of a signal line, whereby light emission luminance of the light emitting element in a next emission period is set.Type: ApplicationFiled: August 29, 2012Publication date: December 20, 2012Applicant: Sony CorporationInventors: Tomoaki Handa, Yuuki Seo, Hiroshi Sagawa, Katsuhide Uchino
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Patent number: 8269697Abstract: The present invention disposes a switch transistor between a driving transistor and a light emitting element, and sets the switch transistor in an off state during a non-emission period. Thereby, a variation in threshold voltage of the driving transistor is corrected while destruction of the light emitting element due to a reverse bias is avoided.Type: GrantFiled: April 30, 2009Date of Patent: September 18, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Yuuki Seo, Hiroshi Sagawa, Katsuhide Uchino
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Publication number: 20120188545Abstract: Disclosed is a movable body spectrum measuring apparatus, which is capable of discriminating an object being measured highly precisely by the photographic data regarding a spectrum sensor and is capable of processing the photographic data in real time. The movable body spectrum measuring apparatus discriminates the object being measured based on the spectrum data relating to the observation light detected by a spectrum sensor. The movable body spectrum measuring apparatus comprises a dictionary data storing unit for storing the spectrum data containing the wavelength information and the light intensity information of the object being measured, and a limitation information storing unit for storing limitation information to regulate the wavelength information into partial wavelength information.Type: ApplicationFiled: May 29, 2009Publication date: July 26, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryuji Funayama, Shinya Kawamata, Masato Endo, Yasukata Yokochi, Yasuhiro Yoshida, Tomoaki Handa, Kenichi Kitahama
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Patent number: 8212747Abstract: Disclosed herein is an image display device including a display section formed by arranging pixel circuits in a matrix form. Each pixel circuit includes at least a light emitting element, a drive transistor, a holding capacitor, and a write transistor. A light emission and non-light emission periods are alternately repeated. A light emission period start voltage and a non-light emission period start voltage are alternately output to the signal line. The terminal voltage of the holding capacitor is set to start the light emission and non-light emission periods. The write signal is set to sequentially delay the timings. The power drive signal is set in units of a plurality of successive lines. The drain voltage of the drive transistor is pulled up to high level at a time other than when the one of the terminals is connected to the signal line by the write signal in different lines.Type: GrantFiled: June 11, 2009Date of Patent: July 3, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Katsuhide Uchino, Tetsuro Yamamoto
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Patent number: 8199078Abstract: A display apparatus includes: a display area formed by disposing pixel circuits in a matrix; a signal line drive circuit for generating drive signals for signal lines in accordance with image data, and outputting the drive signals for the signal lines to signal lines of the display area, respectively; and a scanning line drive circuit for outputting write signals to scanning lines for write of the display area, respectively; wherein when there is no change in the image data, the scanning line drive circuit stops the write signals from being outputted.Type: GrantFiled: July 1, 2009Date of Patent: June 12, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Tetsuro Yamamoto, Yuuki Seo, Katsuhide Uchino
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Patent number: 8094252Abstract: A method of driving a display apparatus formed by arranging display devices each having a driving circuit and a current-driven type light emitting portion, the method comprising the steps of: performing a threshold voltage cancelling process in units of a display device row in which a predetermined reference voltage is applied to a gate electrode of a driving transistor of Q×N display devices configuring groups of display device rows and a predetermined driving voltage is applied to one source/drain region of the Q×N display devices so as to change the electric potential of the other source/drain region toward an electric potential calculated by subtracting a threshold voltage of the driving transistor from the reference voltage during a period TQ; and sequentially performing a writing process, in which video signals are applied to the gate electrodes of the driving transistor of N display devices configuring the display device row, Q times.Type: GrantFiled: September 15, 2010Date of Patent: January 10, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Tetsuro Yamamoto, Hideki Sugimoto, Katsuhide Uchino
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Patent number: 8094253Abstract: Disclosed herein is a driving method of a display device. The display device includes display elements arranged in a form of a two-dimensional matrix and each have a driving circuit and a light emitting section. The driving circuit includes a driving transistor having a gate electrode and source/drain regions and a capacitance section, and a current flowing through the light emitting section via the source/drain regions of the driving transistor. The driving method includes the step of performing a first writing process, a second writing process, and then setting the gate electrode of the driving transistor in a floating state. A current corresponding to a value of a voltage retained in the capacitance section for retaining a voltage of the gate electrode of the driving transistor with respect to a source region of the driving transistor flows through the light emitting section, so that the light emitting section emits light.Type: GrantFiled: January 3, 2011Date of Patent: January 10, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Naobumi Toyomura, Hideki Sugimoto, Katsuhide Uchino
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Publication number: 20110205252Abstract: Disclosed herein is a driving method of a display device. The display device includes display elements arranged in a form of a two-dimensional matrix and each have a driving circuit and a light emitting section. The driving circuit includes a driving transistor having a gate electrode and source/drain regions and a capacitance section, and a current flowing through the light emitting section via the source/drain regions of the driving transistor. The driving method includes the step of performing a first writing process, a second writing process, and then setting the gate electrode of the driving transistor in a floating state. A current corresponding to a value of a voltage retained in the capacitance section for retaining a voltage of the gate electrode of the driving transistor with respect to a source region of the driving transistor flows through the light emitting section, so that the light emitting section emits light.Type: ApplicationFiled: January 3, 2011Publication date: August 25, 2011Applicant: Sony CorporationInventors: Tomoaki Handa, Naobumi Toyomura, Hideki Sugimoto, Katsuhide Uchino
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Publication number: 20110157158Abstract: A display panel module includes: a pixel array unit in which sub-pixels each having a current-driven self luminous device and a pixel circuit controlling the drive of the self luminous device are arranged in a matrix state; a signal line drive unit driving signal lines; a writing control line drive unit controlling writing of potentials appearing at the signal lines to the sub-pixels based on a scanning clock of a given frequency; and a power supply control unit controlling supply and stop of drive power supply with respect to the sub-pixels, which supplies drive power supply prescribing a lighting period of the self luminous devices in the unit of given plural horizontal lines at the same timing in the order of completion of signal potential writing based on the scanning clock after waiting time of a given length passes after completion of the signal potential writing of a first horizontal line in which the signal potential writing is completed first as well as controls the length of the lighting period in oType: ApplicationFiled: November 10, 2010Publication date: June 30, 2011Applicant: Sony CorporationInventors: Hiroshi Hasegawa, Tomoaki Handa
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Publication number: 20110096065Abstract: A method of driving a display apparatus formed by arranging display devices each having a driving circuit and a current-driven type light emitting portion, the method comprising the steps of: performing a threshold voltage cancelling process in units of a display device row in which a predetermined reference voltage is applied to a gate electrode of a driving transistor of Q×N display devices configuring groups of display device rows and a predetermined driving voltage is applied to one source/drain region of the Q×N display devices so as to change the electric potential of the other source/drain region toward an electric potential calculated by subtracting a threshold voltage of the driving transistor from the reference voltage during a period TQ; and sequentially performing a writing process, in which video signals are applied to the gate electrodes of the driving transistor of N display devices configuring the display device row, Q times.Type: ApplicationFiled: September 15, 2010Publication date: April 28, 2011Applicant: Sony CorporationInventors: Tomoaki Handa, Tesuro Yamamoto, Hideki Sugimoto, Katsuhide Uchino
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Patent number: 7864172Abstract: A cathode potential controller for controlling a common cathode potential applied to a self light emission type display panel in which an emission state of each of pixels is driven and controlled in accordance with an active matrix drive system, the cathode potential controller including: a self light emitting element; a constant current source; an electrode-to-electrode voltage measuring portion; a cathode potential determining portion; and a cathode potential applying portion.Type: GrantFiled: May 21, 2008Date of Patent: January 4, 2011Assignee: Sony CorporationInventors: Hidekazu Miyake, Mitsuru Tada, Tomoaki Handa, Atsushi Ozawa