Patents by Inventor Masami Iseki
Masami Iseki 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: 10264201Abstract: Provided is a solid-state image pickup apparatus which includes a plurality of groups, each including an output line to which the pixel signals are output from pixels in a corresponding column and an AD conversion unit configured to perform AD conversion on the pixel signals output to the output line for some of the plurality of rows to generate a digital signal. An adjustment period for ensuring a difference in length between a first horizontal period and a second horizontal period and executing an operation of the AD conversion unit is set in a period excluding a period from first timing at which the output of the pixel signals to the output line starts, to second timing at which the AD conversion unit starts the AD conversion.Type: GrantFiled: March 16, 2017Date of Patent: April 16, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Masami Iseki, Kazuhiro Sonoda
-
Publication number: 20170289479Abstract: Provided is a solid-state image pickup apparatus which includes a plurality of groups, each including an output line to which the pixel signals are output from pixels in a corresponding column and an AD conversion unit configured to perform AD conversion on the pixel signals output to the output line for some of the plurality of rows to generate a digital signal. An adjustment period for ensuring a difference in length between a first horizontal period and a second horizontal period and executing an operation of the AD conversion unit is set in a period excluding a period from first timing at which the output of the pixel signals to the output line starts, to second timing at which the AD conversion unit starts the AD conversion.Type: ApplicationFiled: March 16, 2017Publication date: October 5, 2017Inventors: Masami Iseki, Kazuhiro Sonoda
-
Patent number: 9208720Abstract: An organic EL displaying apparatus which suppresses a defective display caused by a leak current at a time when an emission period controlling transistor is off is provided. The organic EL displaying apparatus comprises a plurality of pixels each of which includes an organic EL element, a power supply line, a driving transistor and the emission period controlling transistor, a data line, and a control line. In this apparatus, in a certain one of the pixels, a resistance Roff—ILM between source and drain electrodes of the emission period controlling transistor in an off state of the emission period controlling transistor, and a resistance Rbk—Dr between source and drain electrodes of the driving transistor in a state that a minimum gradation displaying data voltage has been applied to a gate electrode of the driving transistor satisfy Roff—ILM?Rbk—Dr.Type: GrantFiled: November 15, 2011Date of Patent: December 8, 2015Assignees: Canon Kabushiki Kaisha, Hitachi Displays, Ltd.Inventors: Junya Tamaki, Nobuhiko Sato, Masami Iseki, Kouji Ikeda, Masahiro Tamura, Takeshi Izumida, Naoki Tokuda
-
Patent number: 9205669Abstract: Each data line includes base parts covering contact holes and line parts extending in an array direction of pixel circuits and connecting adjacent base parts to each other. The line parts have a smaller width in a direction perpendicular to the array direction than the base parts and are connected to the base parts while being offset in the direction perpendicular to the array direction from each other on both sides of at least two base parts that include first and second base parts. A connection position of the first base part with the line part on one side among both sides of the base units is located on the pixel circuit side with respect to the other side, and a connection position of the second base part on the one side is located on an opposite side to the pixel circuit side with respect to the other side.Type: GrantFiled: October 27, 2014Date of Patent: December 8, 2015Assignee: Canon Kabushiki KaishaInventors: Kouji Ikeda, Masami Iseki
-
Patent number: 9172837Abstract: Provided is a light source for exposure including: a circuit section which includes plural pixel circuits arranged in one direction, a scanning circuit which outputs a scanning signal, a scanning line which supplies the pixel circuits with the scanning signal; light-emitting elements connected to the pixel circuits; and data lines which supply a lead wire with a data signal via the pixel circuits, wherein a data line group including the plural data lines, a light-emitting element group including the plural light-emitting elements, and the circuit section are arranged in this order in a direction perpendicular to a direction in which the plural pixel circuits are arranged.Type: GrantFiled: August 29, 2014Date of Patent: October 27, 2015Assignee: Canon Kabushiki KaishaInventors: Kouji Ikeda, Takanori Yamashita, Masami Iseki
-
Patent number: 9167635Abstract: A light emitting apparatus includes a light emitting element, a driving circuit which has a driving transistor having a gate, a drain, and a source, and a capacitor having one end connected to the gate, a power line, and first and second voltage lines, and, in a period in which the gate and the drain are short-circuited and the drain and the light emitting element are blocked, the source is connected to the first voltage line and the other end of the capacitor is connected to the second voltage line to hold a voltage in the capacitor, and, in a period in which the gate and the drain are disconnected and the drain and the light emitting element are connected, the source is connected to the power line, and the other end of the capacitor is connected to the source to supply a current to the light emitting element.Type: GrantFiled: September 18, 2013Date of Patent: October 20, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Takanori Yamashita, Masami Iseki, Tsuyoshi Yabukane
-
Patent number: 9165508Abstract: A display apparatus includes: a plurality of pixel circuits 6; a reference voltage source for supplying a reference voltage to a reference voltage line 4; a first switch for connecting the reference voltage source to the reference voltage line 4; a data line 5 for supplying a data voltage to the pixel circuit, wherein the pixel circuit 6 includes a light emitting element, a driving transistor M1 having a source connected to an anode of the light emitting element, a holding capacitor CS having one end connected to a gate of the driving transistor M1 and having the other end connected to the source of the driving transistor M1, a second switch for connecting the gate of the driving transistor M1 to the data line 5, and a third switch for connecting the source of the driving transistor M1 to the reference voltage line 4.Type: GrantFiled: February 14, 2013Date of Patent: October 20, 2015Assignee: Canon Kabushiki KaishaInventors: Takanori Yamashita, Masami Iseki, Tatsuhito Goden
-
Patent number: 9142160Abstract: An exemplary embodiment of the present invention is a display apparatus. In the display apparatus, each row has as many row selection lines as the number of colors of light emitting elements, and row selection signals are supplied via the row selection lines such that a first row selection signal and a second row selection signals are supplied to driving circuits of light emitting elements of each color in first and second periods alternately and a plurality of times at different intervals in each frame. In the first period, light-emission or no-light-emission data signals are supplied over data lines. In the second period, only no-light-emission data signals are supplied. One of the first and second row selection signals is supplied with the same timing for all colors, while the other one of the row selection signals is supplied with timing different among the colors.Type: GrantFiled: June 12, 2012Date of Patent: September 22, 2015Assignee: Canon Kabushiki KaishaInventors: Tatsuhito Goden, Masami Iseki
-
Patent number: 9036211Abstract: A light emitting apparatus including: a plurality of light emitting elements; a drive circuit including a transistor and a capacitor having one end connected to a gate of the transistor; and a signal supply circuit for receiving a digital gradation signal and outputting an analog voltage signal to the drive circuit, including a computation circuit configured to correct the input digital gradation signal to generate a corrected digital gradation signal, in which the drive circuit is configured to conduct an auto-zero operation which reduce the gate-source voltage of the transistor to a threshold voltage by flowing the drain current to the capacitor, and the computation circuit is configured to generate the corrected digital gradation signal by multiplying a correction coefficient to the input digital gradation signal subtracted by a particular signal common to the plurality of light emitting elements.Type: GrantFiled: March 10, 2014Date of Patent: May 19, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Takanori Yamashita, Masami Iseki, Kouji Ikeda, Shuhei Takahashi
-
Publication number: 20150116445Abstract: Each data line includes base parts covering contact holes and line parts extending in an array direction of pixel circuits and connecting adjacent base parts to each other. The line parts have a smaller width in a direction perpendicular to the array direction than the base parts and are connected to the base parts while being offset in the direction perpendicular to the array direction from each other on both sides of at least two base parts that include first and second base parts. A connection position of the first base part with the line part on one side among both sides of the base units is located on the pixel circuit side with respect to the other side, and a connection position of the second base part on the one side is located on an opposite side to the pixel circuit side with respect to the other side.Type: ApplicationFiled: October 27, 2014Publication date: April 30, 2015Inventors: Kouji Ikeda, Masami Iseki
-
Publication number: 20150062669Abstract: Provided is a light source for exposure including: a circuit section which includes plural pixel circuits arranged in one direction, a scanning circuit which outputs a scanning signal, a scanning line which supplies the pixel circuits with the scanning signal; light-emitting elements connected to the pixel circuits; and data lines which supply a lead wire with a data signal via the pixel circuits, wherein a data line group including the plural data lines, a light-emitting element group including the plural light-emitting elements, and the circuit section are arranged in this order in a direction perpendicular to a direction in which the plural pixel circuits are arranged.Type: ApplicationFiled: August 29, 2014Publication date: March 5, 2015Inventors: Kouji Ikeda, Takanori Yamashita, Masami Iseki
-
Patent number: 8847934Abstract: A displaying apparatus having a finer-pitch circuit constitution is provided without deteriorating a displaying quality and increasing each pixel size. In the displaying apparatus which can suppress a characteristic variation of a driving transistor included in each pixel circuit by using a control circuit, the control circuit is arranged on an outer side of a region in which the plurality of pixel circuits are arranged, and there are a second capacitor in which an input data signal is supplied to one end thereof, a first voltage follower circuit of which an input is connected to the other end of the second capacitor and of which an output is connectable to a data line, and a second voltage follower circuit of which an input is connected to the data line and of which an output is connectable to the other end of the second capacitor.Type: GrantFiled: December 10, 2012Date of Patent: September 30, 2014Assignee: Canon Kabushiki KaishaInventors: Takanori Yamashita, Masami Iseki, Fujio Kawano, Tatsuhito Goden
-
Publication number: 20140268239Abstract: A light emitting apparatus including: a plurality of light emitting elements; a drive circuit including a transistor and a capacitor having one end connected to a gate of the transistor; and a signal supply circuit for receiving a digital gradation signal and outputting an analog voltage signal to the drive circuit, including a computation circuit configured to correct the input digital gradation signal to generate a corrected digital gradation signal, in which the drive circuit is configured to conduct an auto-zero operation which reduce the gate-source voltage of the transistor to a threshold voltage by flowing the drain current to the capacitor, and the computation circuit is configured to generate the corrected digital gradation signal by multiplying a correction coefficient to the input digital gradation signal subtracted by a particular signal common to the plurality of light emitting elements.Type: ApplicationFiled: March 10, 2014Publication date: September 18, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Takanori Yamashita, Masami Iseki, Kouji Ikeda, Shuhei Takahashi
-
Patent number: 8830147Abstract: A display apparatus includes a plurality of light emitting devices arranged in row and column directions, drive circuits for driving the light emitting devices, a plurality of scanning lines and a plurality of lighting lines connecting the drive circuits in the row direction, a plurality of data lines connecting the drive circuits in the column direction, and a control circuit for controlling the scanning lines, the lighting lines, and the data lines. The control circuit performs at least twice, while performing a first programming scanning and a second programming scanning respectively once, a light emitting scanning in which the plurality of lighting lines are sequentially selected and currents corresponding to the signals set to the drive circuits are supplied from the drive circuit connected to the selected lighting lines to the light emitting devices.Type: GrantFiled: June 17, 2008Date of Patent: September 9, 2014Assignee: Canon Kabushiki KaishaInventors: Noriyuki Shikina, Hideo Mori, Tatsuhito Goden, Somei Kawasaki, Masami Iseki
-
Patent number: 8803924Abstract: A display device includes a plurality of pixels respectively including, a light emitting element, a driving transistor configured to control driving current to the light emitting element, and a storage capacitor configured to be written voltage corresponding to a gradation value on and hold the voltage and configured to apply display voltage depending on the voltage corresponding to the gradation value between a gate and a source of the driving transistor. The display device further includes a stress voltage application unit configured to apply a stress voltage having a voltage value outside a range of a value capable of taking the display voltage between the gate and the source of the driving transistor.Type: GrantFiled: August 31, 2011Date of Patent: August 12, 2014Assignees: Japan Display Inc., Canon Kabushiki KaishaInventors: Hajime Akimoto, Toshihiro Sato, Akiharu Takabayashi, Masami Iseki
-
Publication number: 20140078233Abstract: A light emitting apparatus includes a light emitting element, a driving circuit which has a driving transistor having a gate, a drain, and a source, and a capacitor having one end connected to the gate, a power line, and first and second voltage lines, and, in a period in which the gate and the drain are short-circuited and the drain and the light emitting element are blocked, the source is connected to the first voltage line and the other end of the capacitor is connected to the second voltage line to hold a voltage in the capacitor, and, in a period in which the gate and the drain are disconnected and the drain and the light emitting element are connected, the source is connected to the power line, and the other end of the capacitor is connected to the source to supply a current to the light emitting element.Type: ApplicationFiled: September 18, 2013Publication date: March 20, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Takanori Yamashita, Masami Iseki, Tsuyoshi Yabukane
-
Patent number: 8653541Abstract: A semiconductor device including a plurality of circuits that includes a transistor, where a semiconductor layer forming the transistor includes a first contact pad, a first part that is connected to the first contact pad and that extends in a direction intersecting a short direction of a pitch with which the circuits are arranged, a second part that extends from the first part in the short direction, and a second contact pad including the first part and the second part that are provided between the first contact pad and the second contact pad, where the second part overlaps an electrode layer across an insulating layer.Type: GrantFiled: April 19, 2010Date of Patent: February 18, 2014Assignee: Canon Kabushiki KaishaInventors: Kouji Ikeda, Takanori Yamashita, Masami Iseki
-
Patent number: 8629857Abstract: Light is prevented from being emitted from a region that overlaps a contract hole in a structure in which light emitting devices are stacked. A stacked organic electro-luminescent display apparatus includes a contact hole that electrically connects a first electrode or a second electrode to a driving circuit. The first or second electrode and a second organic compound layer are provided in the contact hole, and the second organic compound layer existing in the contact hole does not emit light.Type: GrantFiled: July 9, 2009Date of Patent: January 14, 2014Assignee: Canon Kabushiki KaishaInventors: Takashi Moriyama, Toshihiko Mimura, Nobuhiko Sato, Kohei Nagayama, Masami Iseki, Nozomu Izumi, Junya Tamaki
-
Publication number: 20130234918Abstract: A display apparatus includes: a plurality of pixel circuits 6; a reference voltage source for supplying a reference voltage to a reference voltage line 4; a first switch for connecting the reference voltage source to the reference voltage line 4; a data line 5 for supplying a data voltage to the pixel circuit, wherein the pixel circuit 6 includes a light emitting element, a driving transistor M1 having a source connected to an anode of the light emitting element, a holding capacitor CS having one end connected to a gate of the driving transistor M1 and having the other end connected to the source of the driving transistor M1, a second switch for connecting the gate of the driving transistor M1 to the data line 5, and a third switch for connecting the source of the driving transistor M1 to the reference voltage line 4.Type: ApplicationFiled: February 14, 2013Publication date: September 12, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Takanori Yamashita, Masami Iseki, Tatsuhito Goden
-
Patent number: 8514209Abstract: A display apparatus includes a plurality of pixels arranged in two-dimensions, each pixel including a pixel circuit and a light emitting element for emitting light at a luminance corresponding to a data signal, a data line, connected to each pixel circuit, for writing the data signal, and a light emitting period control signal line for supplying a light emitting period control signal. Each pixel circuit includes a light emitting element drive unit for supplying a current or voltage corresponding to the data signal to the light emitting element, and a light emitting period control unit for controlling a light emitting period of the light emitting element by the light emitting period control signal. The light emitting period control signals have two or more light emitting period control signals, and the respective pixels are divided into two or more groups by grouping the respective pixels disposed in a same row at least into a same group.Type: GrantFiled: June 22, 2010Date of Patent: August 20, 2013Assignee: Canon Kabushiki KaishaInventors: Kouji Ikeda, Masami Iseki