Patents by Inventor Hajime Kimura

Hajime Kimura 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: 11152366
    Abstract: A semiconductor device with a large storage capacity per unit area is provided. A semiconductor device includes a memory cell. The memory cell includes a first conductor; a first insulator over the first conductor; a first oxide over the first insulator and including a first region, a second region, and a third region positioned between the first region and the second region; a second insulator over the first oxide; a second conductor over the second insulator; a third insulator positioned in contact with a side surface of the first region; and a second oxide positioned on the side surface of the first region, with the third insulator therebetween. The first region includes a region overlapping the first conductor. The third region includes a region overlapped by the second conductor. The first region and the second region have a lower resistance than the third region.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: October 19, 2021
    Inventors: Shunpei Yamazaki, Hajime Kimura, Takayuki Ikeda, Kiyoshi Kato, Yuta Endo, Junpei Sugao
  • Patent number: 11150418
    Abstract: An optical connector ferrule according to an embodiment includes an MT ferrule, and a spacer mounted on an optical end surface of the MT ferrule and having a guide hole into which a guide pin is inserted. The spacer has a contact surface that contacting the counterpart connector and a recess surrounded by the contact surface. The spacer includes a lens part exposed on a bottom surface of the recess and optically coupled to the optical end surface of the MT ferrule and a base part that retains the lens part by surrounding the lens part. The material of the lens part and the material of the base part are different from each other, and the difference between the linear expansion coefficient of the base part and the linear expansion coefficient of the MT ferrule is 0.5×10?5/° C. or less.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: October 19, 2021
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., JAPAN COMMUNICATION ACCESSORIES MANUFACTURING CO., LTD.
    Inventors: Dai Sasaki, Takayuki Shimazu, Hajime Arao, Takuro Watanabe, Sho Yakabe, Motoyoshi Kimura, Manabu Izaki
  • Publication number: 20210318568
    Abstract: To provide a display device or the like that enables stable curing of a resin. The display device includes a first circuit and a second circuit over the same substrate. The first circuit has a function of performing display; the second circuit has a function of driving the first circuit; the second circuit includes a transistor and a capacitor; the transistor includes an oxide semiconductor layer over a first insulating layer; the capacitor includes a first conductive layer, a second insulating layer, and a second conductive layer; the first conductive layer is positioned over the first insulating layer; one of a source and a drain of the transistor is electrically connected to the second conductive layer; and the first conductive layer and the oxide semiconductor layer include the same metal element.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 14, 2021
    Inventors: Hajime KIMURA, Tetsuji ISHITANI
  • Patent number: 11143925
    Abstract: An object is to provide a display device that performs accurate display. A circuit is formed using a transistor that includes an oxide semiconductor and has a low off-state current. A precharge circuit or an inspection circuit is formed in addition to a pixel circuit. The off-state current is low because the oxide semiconductor is used. Thus, it is not likely that a signal or voltage is leaked in the precharge circuit or the inspection circuit to cause defective display. As a result, a display device that performs accurate display can be provided.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 12, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Atsushi Umezaki
  • Publication number: 20210311340
    Abstract: It is an object to provide a liquid crystal display device which has excellent viewing angle characteristics and higher quality. The present invention has a pixel including a first switch, a second switch, a third switch, a first resistor, a second resistor, a first liquid crystal element, and a second liquid crystal element. A pixel electrode of the first liquid crystal element is electrically connected to a signal line through the first switch. The pixel electrode of the first liquid crystal element is electrically connected to a pixel electrode of the second liquid crystal element through the second switch and the first resistor. The pixel electrode of the second liquid crystal element is electrically connected to a Cs line through the third switch and the second resistor. A common electrode of the first liquid crystal element is electrically connected to a common electrode of the second liquid crystal element.
    Type: Application
    Filed: April 22, 2021
    Publication date: October 7, 2021
    Inventor: Hajime Kimura
  • Patent number: 11139323
    Abstract: Provided is a digital circuit (30) that comprises: a switching circuit (31) having first transistors (32, 33) supplied with power supply potentials (VDD, VSS); correcting circuits (34, 36) connected between an input terminal (IN) inputted with an input signal and control terminals (gates) of the first transistors; capacitors (C2, C3) connected between the control terminals and the input terminal; diode-connected second transistors (35, 37) that are provided between nodes (N5, N6) between the capacitors and the control terminals and the power supply potentials and have the substantially sanle threshold voltage as the first transistors; and switches (SW2, SW3) connected in series with the second transistors.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: October 5, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 11133332
    Abstract: An object is to provide a semiconductor device with high aperture ratio or a manufacturing method thereof. Another object is to provide semiconductor device with low power consumption or a manufacturing method thereof. A light-transmitting conductive layer which functions as a gate electrode, a gate insulating film formed over the light-transmitting conductive layer, a semiconductor layer formed over the light-transmitting conductive layer which functions as the gate electrode with the gate insulating film interposed therebetween, and a light-transmitting conductive layer which is electrically connected to the semiconductor layer and functions as source and drain electrodes are included.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: September 28, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Publication number: 20210296372
    Abstract: A semiconductor device having a configuration hardly generating variations in the current value due to a deteriorated EL element is to be provided. A capacitance element is disposed between the gate and the source of a driving TFT, video signals are inputted to the gate electrode, and then it is in the floating state. Suppose an EL element is deteriorated and the anode potential rises, that is, the source potential of the driving TFT rises, the potential of the gate electrode of the driving TFT, being in the floating state by coupling of the capacitance element, is to rise by the same amount. Accordingly, even when the anode potential rises due to the deteriorated EL element, the rise is added to the gate electrode potential as it is, and the gate-source voltage of the driving TFT is allowed to be constant.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 23, 2021
    Inventor: Hajime KIMURA
  • Patent number: 11126053
    Abstract: It is an object of the present invention to apply a sufficient electrical field to a liquid crystal material in a horizontal electrical field liquid crystal display device typified by an FFS type. In a horizontal electrical field liquid crystal display, an electrical field is applied to a liquid crystal material right above a common electrode and a pixel electrode using plural pairs of electrodes rather than one pair of electrodes. One pair of electrodes includes a comb-shaped common electrode and a comb-shaped pixel electrode. Another pair of electrodes includes a common electrode provided in a pixel portion and the comb-shaped pixel electrode.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: September 21, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Hideki Uochi
  • Patent number: 11121203
    Abstract: Display irregularities in light emitting devices, which develop due to dispersions per pixel in the threshold value of TFTs for supplying electric current to light emitting elements, are obstacles to increasing the image quality of the light emitting devices. An electric potential in which the threshold voltage of a TFT (105) is either added to or subtracted from the electric potential of a reset signal line (110) is stored in capacitor means (108). A voltage, in which the corresponding threshold voltage is added to an image signal, is applied to a gate electrode of a TFT (106). TFTs within a pixel are disposed adjacently, and dispersion in the characteristics of the TFTs does not easily develop. The threshold value of the TFT (105) is thus canceled, even if the threshold values of the TFTs (106) differ per pixel, and a predetermined drain current can be supplied to an EL element (109).
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: September 14, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Yoshifumi Tanada
  • Publication number: 20210278922
    Abstract: A touch panel including an oxide semiconductor film having conductivity is provided. The touch panel includes a transistor, a second insulating film, and a touch sensor. The transistor includes a gate electrode; a gate insulating film; a first oxide semiconductor film; a source electrode and a drain electrode; a first insulating film; and a second oxide semiconductor film. The second insulating film is over the second oxide semiconductor film so that the second oxide semiconductor film is positioned between the first insulating film and the second insulating film. The touch sensor includes a first electrode and a second electrode. One of the first and second electrodes includes the second oxide semiconductor film.
    Type: Application
    Filed: May 11, 2021
    Publication date: September 9, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Hajime KIMURA, Masami JINTYOU, Yasuharu HOSAKA, Naoto GOTO, Takahiro IGUCHI, Daisuke KUROSAKI, Junichi KOEZUKA
  • Patent number: 11114054
    Abstract: A driver circuit includes a circuit 200, a transistor 101_1, and a transistor 101_2. A signal is selectively input from the circuit 200 to a gate of the transistor 101_1 and the transistor 101_2, so that the transistor 101_1 and the transistor 101_2 are controlled to be on or off. The transistor 101_1 and the transistor 101_2 are turned on or off; thus, the wiring 112 and the wiring 111 become conducting or non-conducting.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: September 7, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Atsushi Umezaki
  • Publication number: 20210271144
    Abstract: To provide a semiconductor device, a liquid crystal display device, and an electronic device which have a wide viewing angle and in which the number of manufacturing steps, the number of masks, and manufacturing cost are reduced compared with a conventional one. The liquid crystal display device includes a first electrode formed over an entire surface of one side of a substrate; a first insulating film formed over the first electrode; a thin film transistor formed over the first insulating film; a second insulating film formed over the thin film transistor; a second electrode formed over the second insulating film and having a plurality of openings; and a liquid crystal over the second electrode. The liquid crystal is controlled by an electric field between the first electrode and the second electrode.
    Type: Application
    Filed: May 20, 2021
    Publication date: September 2, 2021
    Inventor: Hajime Kimura
  • Patent number: 11106096
    Abstract: By increasing an interval between electrodes which drives liquid crystals, a gradient of an electric field applied between the electrodes can be controlled and an optimal electric field can be applied between the electrodes. The invention includes a first electrode formed over a substrate, an insulating film formed over the substrate and the first electrode, a thin film transistor including a semiconductor film in which a source, a channel region, and a drain are formed over the insulating film, a second electrode located over the semiconductor film and the first electrode and including first opening patterns, and liquid crystals provided over the second electrode.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 31, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Publication number: 20210257016
    Abstract: In a semiconductor device capable of product-sum operation, variations in transistor characteristics are reduced. The semiconductor device includes a first circuit including a driver unit, a correction unit, and a holding unit, and an inverter circuit. The first circuit has a function of generating an inverted signal of a signal input to an input terminal of the first circuit and outputting the inverted signal to an output terminal of the first circuit. The driver unit includes a p-channel first transistor and an n-channel second transistor having a back gate. The correction unit has a function of correcting the threshold voltage of one or both of the first transistor and the second transistor. The holding unit has a function of holding the potential of the back gate of the second transistor. The output terminal of the first circuit is electrically connected to an input terminal of the inverter circuit.
    Type: Application
    Filed: May 31, 2019
    Publication date: August 19, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Hajime KIMURA, Yoshiyuki KUROKAWA, Tatsunori INOUE
  • Publication number: 20210257015
    Abstract: A semiconductor device that enables lower power consumption and data storage imitating a human brain is provided. The semiconductor device includes a control unit, a memory unit, and a sensor unit. The memory unit includes a memory circuit and a switching circuit. The memory circuit includes a first transistor and a capacitor. The switching circuit includes a second transistor and a third transistor. The first transistor and the second transistor include a semiconductor layer including a channel formation region with an oxide semiconductor, and a back gate electrode. The control unit has a function of switching a signal supplied to the back gate electrode, in accordance with a signal obtained at the sensor unit.
    Type: Application
    Filed: May 31, 2019
    Publication date: August 19, 2021
    Inventors: Shunpei YAMAZAKI, Hajime KIMURA, Atsushi MIYAGUCHI, Yoshiaki OIKAWA
  • Publication number: 20210249444
    Abstract: In case the size of the transistor is enlarged, power consumption of the transistor is increased. Thus, the present invention provides a display device capable of preventing a current from flowing to a display element in signal writing operation without varying potentials of power source lines for supplying a current to the display element per row. In setting a gate-source voltage of a transistor by applying a predetermined current to the transistor, a potential of a gate terminal of the transistor is adjusted so as to prevent a current from flowing to a load connected to a source terminal of the transistor. Therefore, a potential of a wire connected to the gate terminal of the transistor is differentiated from a potential of a wire connected to a drain terminal of the transistor.
    Type: Application
    Filed: January 19, 2021
    Publication date: August 12, 2021
    Inventor: Hajime KIMURA
  • Publication number: 20210240292
    Abstract: To provide a novel input/output panel that is highly convenient or reliable, a novel input/output device that is highly convenient or reliable, a novel input/output panel, a novel input/output device, or a novel semiconductor device. The input/output panel includes a pixel, a sensor element, a signal line, a control line, and a scan line. The sensor element has a region overlapping with the pixel. The signal line is electrically connected to the sensor element and the pixel. The control line is electrically connected to the sensor element. The scan line is electrically connected to the pixel.
    Type: Application
    Filed: April 21, 2021
    Publication date: August 5, 2021
    Inventors: Hajime KIMURA, Shunpei YAMAZAKI
  • Publication number: 20210233485
    Abstract: It is an object to suppress deterioration of characteristics of a transistor in a driver circuit. A first switch for controlling whether to set a potential state of an output signal by being turned on and off in accordance with the first input signal, and a second switch for controlling whether to set a potential state of an output signal by being turned on and off in accordance with the second input signal are included. A first wiring and a second wiring are brought into electrical continuity by turning on and off the first switch or the second switch.
    Type: Application
    Filed: March 25, 2021
    Publication date: July 29, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Hajime KIMURA, Atsushi UMEZAKI
  • Patent number: 11073729
    Abstract: The liquid crystal display device includes an island-shaped first semiconductor film 102 which is formed over a base insulating film 101 and in which a source 102d, a channel forming region 102a, and a drain 102b are formed; a first electrode 102c which is formed of a material same as the first semiconductor film 102 to be the source 102d or the drain 102b and formed over the base insulating film 101; a second electrode 108 which is formed over the first electrode 102c and includes a first opening pattern 112; and a liquid crystal 110 which is provided over the second electrode 108.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: July 27, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura