Patents by Inventor Koji KUSUNOKI

Koji KUSUNOKI 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: 11908850
    Abstract: A display device with high resolution is provided. A display device with high display quality is provided. The display device includes a substrate, an insulating layer, a plurality of transistors, and a plurality of light-emitting diodes. The plurality of light-emitting diodes are provided in a matrix over the substrate. Each of the plurality of transistors is electrically connected to at least one of the plurality of light-emitting diodes. The plurality of light-emitting diodes are positioned closer to the substrate than the plurality of transistors are. The plurality of light-emitting diodes emit light toward the substrate. Each of the plurality of transistors includes a metal oxide layer and a gate electrode. The metal oxide layer includes a channel formation region. The top surface of the gate electrode is substantially level with the top surface of the insulating layer.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: February 20, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Koji Kusunoki, Shingo Eguchi, Takayuki Ikeda
  • Patent number: 11900721
    Abstract: A novel electronic device is provided. An electronic device capable of executing various types of processing by simple operation is provided. An electronic device with a high security level is provided. The electronic device includes a control portion, a detection portion, and a memory portion. The detection portion has a function of detecting touch operation and a function of obtaining fingerprint data on a touching finger. The memory portion has a function of retaining fingerprint data on a plurality of finger registered in advance.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: February 13, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Koji Kusunoki
  • Publication number: 20240046857
    Abstract: The power consumption of a display device is reduced. The power consumption of a driver circuit in a display device is reduced. A pixel included in the display device includes a display element. The pixel is configured to have a function of retaining a first voltage corresponding to a first input pulse signal and a function of driving the display element with a third voltage obtained by addition of a second voltage corresponding to a second input pulse signal to the first voltage.
    Type: Application
    Filed: October 17, 2023
    Publication date: February 8, 2024
    Inventors: Shunpei YAMAZAKI, Kei TAKAHASHI, Susumu KAWASHIMA, Koji KUSUNOKI, Kazunori WATANABE
  • Publication number: 20240049543
    Abstract: A high-resolution display device with reduced display unevenness is provided. In the display device, a plurality of pixels are included over a substrate; each of the plurality of pixels includes a transistor and a light-emitting element; the light-emitting element includes a first electrode, an EL layer over the first electrode, and a second electrode over the EL layer; the first electrode is electrically connected to the transistor; in the plurality of pixels, the first electrodes in adjacent pixels are separated by an insulating layer; the second electrode includes a conductive material having light-transmitting property with respect to visible light; the second electrode of each of the plurality of pixels is shared; and light is emitted from the second electrode side. A wiring is included; in a plane view with respect to the substrate, the wiring is placed in a region where the EL layer is not placed; and the second electrode is placed over and in contact with the wiring.
    Type: Application
    Filed: December 14, 2021
    Publication date: February 8, 2024
    Inventors: Koji KUSUNOKI, Kazunori WATANABE, Satoshi YOSHIMOTO, Tomoaki ATSUMI, Daisuke KUBOTA, Naoto KUSUMOTO
  • Publication number: 20240036427
    Abstract: A high-aperture-ratio liquid crystal display device or a high-definition liquid crystal display device is provided. The display device includes a transistor including a semiconductor layer including an oxide semiconductor film, a gate insulating layer, a gate electrode, a first conductive layer, and a second conductive layer; a liquid crystal element including the second conductive layer including an oxide conductive film, a third conductive layer, and a liquid crystal; and a first insulating layer. The first insulating layer includes a first side surface over the first conductive layer. The semiconductor layer is in contact with a top surface of the first conductive layer and the first side surface. The gate insulating layer includes a portion facing the first side surface with the semiconductor layer therebetween. The gate electrode includes a portion facing the first side surface with the semiconductor layer and the gate insulating layer therebetween.
    Type: Application
    Filed: July 20, 2023
    Publication date: February 1, 2024
    Inventors: Koji KUSUNOKI, Susumu KAWASHIMA
  • Patent number: 11887972
    Abstract: A display device with a high luminance, a high contrast, and low power consumption is provided. The display device includes a transistor, a light-emitting element, a coloring layer, a phosphor layer, a first electrode, and a second electrode. The light-emitting element is electrically connected to the first electrode and the second electrode, the first electrode is electrically connected to the transistor, and the second electrode is positioned on the same plane as the first electrode. The coloring layer is positioned over the light-emitting element, the phosphor layer is positioned between the light-emitting element and the coloring layer, and the phosphor layer, the light-emitting element, and the coloring layer include a region in which they overlap with one another. The light-emitting element includes a light-emitting diode chip, and the phosphor layer has a function of emitting light of a complementary color of an emission color of the light-emitting element.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: January 30, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koji Kusunoki, Yosuke Tsukamoto, Kensuke Yoshizumi
  • Patent number: 11886250
    Abstract: A data processing device is provided. The data processing device includes a functional panel and a first surface to a fifth surface. The functional panel includes a first region to a fifth region. The second region performs display in one direction. The third region is positioned between the first region and the second region and can be bent. The fifth region is positioned between the first region and the fourth region and can be bent. The fourth region has a function of performing display in one direction in a state where the third region and the fifth region are bent. The first surface includes the first region and a light-emitting element. The light-emitting element emits light. The second surface includes the second region and a photoelectric conversion element. The photoelectric conversion element converts the light into an electric signal. The third surface is positioned between the first surface and the second surface, can be bent, and includes the third region.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: January 30, 2024
    Inventors: Koji Kusunoki, Ryo Hatsumi, Daisuke Kubota
  • Publication number: 20240028680
    Abstract: A semiconductor device including a biometric recognition function and a touch sensor or near touch sensor function is provided. The semiconductor device includes a light-emitting device and an imaging device. The imaging device includes a gate driver circuit and m rows of pixels (m is an integer more than or equal to 2). The gate driver circuit includes a plurality of first register circuits and second register circuits whose number is less than that of the first register circuits. The first register circuits are connected with each other in series and the second register circuits are connected with each other in series. The gate driver circuit has a function of operating in the first mode and the second mode. In the first mode, the first register circuits are in the on state and the second register circuits are in the off state, and in the second mode, the second register circuits are in the on state and the first register circuits are in the off state.
    Type: Application
    Filed: August 24, 2023
    Publication date: January 25, 2024
    Inventors: Satoshi YOSHIMOTO, Susumu KAWASHIMA, Koji KUSUNOKI, Kazunori WATANABE
  • Publication number: 20240023371
    Abstract: A novel method for fabricating a display apparatus is provided. An anode is formed over an insulating layer, an EL layer is formed over the anode, and a cathode is formed over the EL layer. A plurality of light-emitting elements are formed without provision of a partition by selectively removing parts of the anode, the EL layer, and the cathode. A conductive layer having a light-transmitting property is formed to cover the plurality of light-emitting elements. The cathodes of the plurality of light-emitting elements are electrically connected to the conductive layer.
    Type: Application
    Filed: November 25, 2021
    Publication date: January 18, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Shingo EGUCHI, Kenichi OKAZAKI, Koji KUSUNOKI, Kensuke YOSHIZUMI
  • Publication number: 20240021150
    Abstract: A novel display is provided. A display having a small change in chromaticity of a micro light-emitting diode in proportion to current density is provided. A display capable of reducing power consumption in the driver circuit when displaying a still image is provided. The display includes a plurality of pixels each including a display element and a microcontroller. The microcontroller includes a first transistor, a triangular wave generator circuit, a comparator, a switch, and a constant current circuit. The first transistor has a function of retaining a potential corresponding to data written to the pixel by being switched off. The triangular wave generator circuit has a function of generating a triangular wave signal. The comparator has a function of generating an output signal corresponding to the potential and the triangular wave signal.
    Type: Application
    Filed: September 26, 2023
    Publication date: January 18, 2024
    Inventors: Kei TAKAHASHI, Koji KUSUNOKI, Kazunori WATANABE, Susumu KAWASHIMA, Kouhei TOYOTAKA, Shunpei YAMAZAKI
  • Patent number: 11869428
    Abstract: A display apparatus capable of image capturing with high sensitivity is provided. The display apparatus is configured to include first to third switches, a first transistor, a second transistor, and a light-emitting/receiving element. The first switch is electrically connected to a gate of the first transistor. The second switch is positioned between one of a source and a drain of the first transistor and one electrode of the light-emitting/receiving element. The third switch is positioned between the one electrode of the light-emitting/receiving element and a gate of the second transistor. The other of the source and the drain of the first transistor is supplied with a first potential. The other electrode of the light-emitting/receiving element is supplied with a second potential. The light-emitting/receiving element has a function of emitting light of a first color and a function of receiving light of a second color.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: January 9, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Susumu Kawashima, Koji Kusunoki, Kazunori Watanabe
  • Patent number: 11869417
    Abstract: The power consumption of a display device is reduced. The power consumption of a driver circuit in a display device is reduced. A pixel included in the display device includes a display element. The pixel is configured to have a function of retaining a first voltage corresponding to a first input pulse signal and a function of driving the display element with a third voltage obtained by addition of a second voltage corresponding to a second input pulse signal to the first voltage.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: January 9, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kei Takahashi, Susumu Kawashima, Koji Kusunoki, Kazunori Watanabe
  • Publication number: 20230412935
    Abstract: A semiconductor device capable of performing authentication in a short time can be provided. The semiconductor device includes a light-emitting unit and an imaging unit. The imaging unit includes a row driver circuit, and the row driver circuit includes first to m latch circuits (m is an integer greater than or equal to 2) and first to m register circuits. A first start pulse signal is input to a first latch circuit and second start pulse signals are input to first to m latch circuits. Scan signals output from the first to (m?1)-th register circuits are input to the second to m-th latch circuits, respectively. The first latch circuit has a function of outputting one of the first start pulse signal and the second start pulse signal to the first register circuit on the basis of data held, and the second to m-th latch circuits have a function of outputting one of the scan signal and the second start pulse signal to the second to m-th register circuits on the basis of data held.
    Type: Application
    Filed: October 26, 2021
    Publication date: December 21, 2023
    Inventors: Kazunori WATANABE, Satoshi YOSHIMOTO, Koji KUSUNOKI, Susumu KAWASHIMA, Motoharu SAITO
  • Publication number: 20230400740
    Abstract: A display device with a high aperture ratio is provided. The display device includes, in a pixel, a first transistor, a second transistor, a first insulating layer, a second insulating layer, a conductive layer, a pixel electrode, a layer containing a liquid crystal material, and a common electrode. The first insulating layer is positioned over a channel formation region of the first transistor. The conductive layer is positioned over the first insulating layer. The second insulating layer is positioned over the first transistor, the second transistor, the first insulating layer, and the conductive layer. The pixel electrode is positioned over the second insulating layer, the layer containing a liquid crystal material is positioned over the pixel electrode, and the common electrode is positioned over the layer containing a liquid crystal material. The common electrode overlaps with the conductive layer with the layer containing a liquid crystal material and the pixel electrode therebetween.
    Type: Application
    Filed: August 15, 2023
    Publication date: December 14, 2023
    Inventors: Shunpei YAMAZAKI, Koji KUSUNOKI, Susumu KAWASHIMA, Daisuke KUBOTA, Tetsuji ISHITANI, Akio YAMASHITA
  • Publication number: 20230403876
    Abstract: A display device having a high display quality is provided. A display device that can perform desired display without image data conversion is provided. The display device includes a first pixel. The first pixel includes a first light-emitting element, a color conversion layer, and a first memory circuit. The first light-emitting element exhibits blue light. The color conversion layer has a function of converting light emitted by the first light-emitting element into light having a longer wavelength. A first image signal and a first correction signal are supplied to the first pixel. The first memory circuit has a function of retaining the first correction signal and a function of adding the first correction signal to the first image signal. The first pixel has a function of displaying an image using the first image signal and the first correction signal.
    Type: Application
    Filed: August 14, 2023
    Publication date: December 14, 2023
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Satoshi SEO, Koji KUSUNOKI, Kei TAKAHASHI
  • Patent number: 11844236
    Abstract: A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a base material and a pair of pixels, and the base material covers the pair of pixels and has a light-transmitting property. The pair of pixels includes one pixel and another pixel, and the one pixel includes a light-emitting device and a first microlens. The light-emitting device emits light toward the base material, and the first microlens is interposed between the base material and the light emission and converges light. The first microlens includes a first surface and a second surface; the second surface is closer to the light-emitting device than the first surface is; and the second surface has a smaller radius of curvature than the first surface. The other pixel includes a photoelectric conversion device and a second microlens. The second microlens is interposed between the base material and the photoelectric conversion and converges external light incident from the base material side.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: December 12, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Daiki Nakamura, Ryo Hatsumi, Rai Sato, Shingo Eguchi, Koji Kusunoki
  • Patent number: 11842705
    Abstract: A display apparatus with low-power consumption is provided. The display apparatus includes an inverter circuit and a pixel having a function of adding data, and the inverter circuit has a function of inverting data supplied from a source driver. The inverter circuit has a function of inverting data supplied from a source driver. The pixel has a function of adding data supplied from the source driver and the inverter circuit. Accordingly, the pixel can generate a voltage several times higher than the output voltage of the source driver and can supply the voltage to a display device. With such a structure, the output voltage of the source driver can be lowered, so that a display apparatus with low power consumption can be achieved.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: December 12, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Susumu Kawashima, Koji Kusunoki, Kazunori Watanabe, Naoto Kusumoto
  • Publication number: 20230395036
    Abstract: A display apparatus with low power consumption is provided. The display apparatus includes a circuit for boosting a signal voltage output from a gate driver. The signal voltage from the gate driver can be boosted and then supplied to a pixel, which is suitable for driving a display device with a high threshold voltage. Furthermore, by utilizing a boosting function, output of the gate driver can be reduced, and power consumption can also be reduced. By combination with a pixel having a boosting function of image data, a display apparatus with lower power consumption can be achieved.
    Type: Application
    Filed: August 18, 2023
    Publication date: December 7, 2023
    Inventors: Kazunori WATANABE, Koji KUSUNOKI
  • Publication number: 20230395022
    Abstract: One embodiment of the present invention relates to a common semiconductor apparatus for driving two different circuits. The semiconductor apparatus is capable of switching a plurality of signal potentials and sequentially outputting the plurality of signal potentials to the outside. The semiconductor apparatus can make one of two different circuits arranged in a matrix operate in all the rows and can make the other circuit operate in all the rows or only in a specific row. For example, in the case where the semiconductor apparatus is applied to a row driver that drives pixels of a display device in which sensor elements are incorporated, the operation of display elements in pixels in all the rows and the operation of sensor elements in pixels in all the rows or in the specific row can be switched.
    Type: Application
    Filed: October 18, 2021
    Publication date: December 7, 2023
    Inventors: Satoshi YOSHIMOTO, Koji KUSUNOKI, Kazunori WATANABE, Susumu KAWASHIMA
  • Patent number: 11837607
    Abstract: A display device includes a liquid crystal element, a transistor, a scan line, and a signal line. The liquid crystal element includes a pixel electrode, a liquid crystal layer, and a common electrode. The scan line and the signal line are each electrically connected to the transistor. The scan line and the signal line each include a metal layer. The transistor is electrically connected to the pixel electrode. A semiconductor layer of the transistor includes a stack of a first metal oxide layer and a second metal oxide layer. The first metal oxide layer includes a region with lower crystallinity than the second metal oxide layer. The transistor includes a first region connected to the pixel electrode. The pixel electrode, the common electrode, and the first region are each configured to transmit visible light. Visible light passes through the first region and the liquid crystal element and exits from the display device.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: December 5, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenichi Okazaki, Daisuke Kurosaki, Yasutaka Nakazawa, Kazunori Watanabe, Koji Kusunoki