Patents Assigned to Semiconductor Energy Laboratory Co., Ltd.
  • Publication number: 20250151508
    Abstract: A long-lifetime light-emitting device is provided. The light-emitting apparatus includes a first light-emitting device and a first color conversion layer. The first color conversion layer contains a first substance. An EL layer of the first light-emitting device includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The second layer contains a third organic compound. The third layer contains a fourth organic compound. The light-emitting layer contains a fifth organic compound and a sixth organic compound. The fourth layer contains a seventh organic compound. The first organic compound is an organic compound having an electron accepting property to the second organic compound. The fifth organic compound is an emission center substance. The HOMO level of the second organic compound is higher than or equal to ?5.7 eV and lower than or equal to ?5.4 eV.
    Type: Application
    Filed: January 2, 2025
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Nobuharu Ohsawa, Shunpei Yamazaki
  • Publication number: 20250151443
    Abstract: An imaging device which has a stacked-layer structure and can be manufactured easily is provided. The imaging device includes a signal processing circuit, a memory device, and an image sensor. The imaging device has a stacked-layer structure in which the memory device is provided above the signal processing circuit, and the image sensor is provided above the memory device. The signal processing circuit includes a transistor formed on a first semiconductor substrate, the memory device includes a transistor including a metal oxide in a channel formation region, and the image sensor includes a transistor formed on a second semiconductor substrate.
    Type: Application
    Filed: January 3, 2025
    Publication date: May 8, 2025
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Tatsuya ONUKI, Kiyoshi KATO, Takanori MATSUZAKI, Hajime KIMURA, Shunpei YAMAZAKI
  • Publication number: 20250151601
    Abstract: The heat resistance of an organic semiconductor device including a step of forming an aluminum oxide film over and in contact with an organic semiconductor layer is improved. A heating step is performed after a layer containing an organometallic compound for a mask for an organic semiconductor layer, which is represented by General Formula (G1) below, is provided over the organic semiconductor layer. In General Formula (G1), Ar represents a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms, X represents oxygen or sulfur, M represents a metal, n represents an integer greater than or equal to 1 and less than or equal to 5, and n is the same as the valence of the metal M. Note that when n is greater than or equal to 2, a plurality of Ars may be the same or different and Xs may be the same or different.
    Type: Application
    Filed: August 9, 2022
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yui YOSHIYASU, Kyoko TAKEDA, Masatoshi TAKABATAKE, Sachiko KAWAKAMI, Tsunenori SUZUKI, Toshiki SASAKI, Naoaki HASHIMOTO, Tomoya AOYAMA
  • Publication number: 20250151612
    Abstract: A light-emitting device with high reliability is provided. The light-emitting device includes a first electrode, a second electrode, and an EL layer. The EL layer is positioned between the first electrode and the second electrode. The EL layer includes a light-emitting layer and an electron-injection layer. The electron-injection layer contains a metal or an oxide of the metal, a first organic compound, and a second organic compound. The first organic compound includes a first ?-electron deficient heteroaromatic ring with an electron-donating group. The second organic compound includes a second ?-electron deficient heteroaromatic ring. The LUMO level of the second organic compound is lower than that of the first organic compound by 0.20 eV or more.
    Type: Application
    Filed: October 31, 2024
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshiki SASAKI, Nobuharu OHSAWA, Hiromi SEO, Shinya FUKUZAKI
  • Publication number: 20250147552
    Abstract: An e-book reader in which destruction of a driver circuit at the time when a flexible panel is handled is inhibited. In addition, an e-book reader having a simplified structure. A plurality of flexible display panels each including a display portion in which display control is performed by a scan line driver circuit and a signal line driver circuit, and a binding portion fastening the plurality of display panels together are included. The signal line driver circuit is provided inside the binding portion, and the scan line driver circuit is provided at the edge of the display panel in a direction perpendicular to the binding portion.
    Type: Application
    Filed: January 9, 2025
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Jun KOYAMA, Yasuyuki ARAI, Ikuko KAWAMATA, Atsushi MIYAGUCHI, Yoshitaka MORIYA
  • Publication number: 20250151534
    Abstract: A display device with a narrow bezel is provided. The display device includes a pixel circuit and a driver circuit which are provided on the same plane. The driver circuit includes a selection circuit and a buffer circuit. The selection circuit includes a first transistor. The buffer circuit includes a second transistor. The first transistor has a region overlapping with the second transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. One of a source and a drain of the second transistor is electrically connected to the pixel circuit.
    Type: Application
    Filed: January 13, 2025
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideaki SHISHIDO, Naoto KUSUMOTO
  • Publication number: 20250147370
    Abstract: The display device includes a first substrate provided with a driver circuit region that is located outside and adjacent to a pixel region and includes at least one second transistor which supplies a signal to the first transistor in each of the pixels in the pixel region, a second substrate facing the first substrate, a liquid crystal layer between the first substrate and the second substrate, a first interlayer insulating film including an inorganic insulating material over the first transistor and the second transistor, a second interlayer insulating film including an organic insulating material over the first interlayer insulating film, and a third interlayer insulating film including an inorganic insulating material over the second interlayer insulating film. The third interlayer insulating film is provided in part of an upper region of the pixel region, and has an edge portion on an inner side than the driver circuit region.
    Type: Application
    Filed: January 9, 2025
    Publication date: May 8, 2025
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Yasuharu HOSAKA, Yukinori SHIMA, Kenichi OKAZAKI, Shunpei YAMAZAKI
  • Publication number: 20250147353
    Abstract: The display device includes: a flexible display panel including a display portion in which scanning lines and signal lines cross each other; a supporting portion for supporting an end portion of the flexible display panel; a signal line driver circuit for outputting a signal to the signal line, which is provided for the supporting portion; and a scanning line driver circuit for outputting a signal to the scanning line, which is provided for a flexible surface of the display panel in a direction which is perpendicular or substantially perpendicular to the supporting portion.
    Type: Application
    Filed: January 10, 2025
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satohiro OKAMOTO, Yasuyuki Arai, Ikuko Kawamata, Atsushi Miyaguchi, Yoshitaka Moriya
  • Publication number: 20250147354
    Abstract: A display device includes a first region and a second region adjacent to the first region. A display element included in the first region has a function of reflecting visible light and a function of emitting visible light. A display element included in the second region has a function of emitting visible light. In an electronic device including the display device, the first region is located on a first surface (e.g., top surface) on which a main image is displayed, and the second region is located on a second surface (e.g., side surface) on which an auxiliary image is displayed.
    Type: Application
    Filed: January 6, 2025
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Daisuke Kubota, Naoto Kusumoto
  • Publication number: 20250151569
    Abstract: The display defects of a display device are reduced. The display quality of the display device is improved. The display device includes a display panel and a first conductive layer. The display panel includes a display element including a pair of electrodes. An electrode of the pair of electrodes which is closer to one surface of the display panel is supplied with a constant potential. A constant potential is supplied to the first conductive layer. The second conductive layer provided on the other surface of the display panel is in contact with the first conductive layer, whereby the second conductive layer is also supplied with the constant potential. The second conductive layer includes a portion not fixed to the first conductive layer.
    Type: Application
    Filed: January 3, 2025
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Toshiyuki ISA
  • Publication number: 20250148942
    Abstract: A semiconductor device that can be highly integrated is provided. The semiconductor device includes a semiconductor layer, a first insulating layer, a second insulating layer, a third insulating layer, and a first conductive layer. The third insulating layer is positioned over the semiconductor layer and includes a first opening over the semiconductor layer. The first conductive layer is positioned over the semiconductor layer, the first insulating layer is positioned between the first conductive layer and the semiconductor layer, and the second insulating layer is provided in a position that is in contact with a side surface of the first opening, the semiconductor layer, and the first insulating layer.
    Type: Application
    Filed: January 13, 2025
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Yukinori SHIMA, Masami JINTYOU
  • Publication number: 20250146126
    Abstract: There have been cases where transistors formed using oxide semiconductors are inferior in reliability to transistors formed using amorphous silicon. Thus, in the present invention, a semiconductor device including a highly reliable transistor formed using an oxide semiconductor is manufactured. An oxide semiconductor film is deposited by a sputtering method, using a sputtering target including an oxide semiconductor having crystallinity, and in which the direction of the c-axis of a crystal is parallel to a normal vector of the top surface of the oxide semiconductor. The target is formed by mixing raw materials so that its composition ratio can obtain a crystal structure.
    Type: Application
    Filed: January 13, 2025
    Publication date: May 8, 2025
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Tetsunori MARUYAMA, Yuki IMOTO, Hitomi SATO, Masahiro WATANABE, Mitsuo MASHIYAMA, Kenichi OKAZAKI, Motoki NAKASHIMA, Takashi SHIMAZU
  • Patent number: 12294031
    Abstract: One of the objects is to improve display quality by reduction in malfunctions of a circuit. In a driver circuit formed using a plurality of pulse output circuits having first to third transistors and first to fourth signal lines, a first clock signal is supplied to the first signal line; a preceding stage signal is supplied to the second signal line; a second clock signal is supplied to the third signal line; an output signal is output from the fourth signal line. Duty ratios of the first clock signal and the second clock signal are different from each other. A period during which the second clock signal is changed from an L-level signal to an H-level signal after the first clock signal is changed from an H-level signal to an L-level signal is longer than a period during which the preceding stage signal is changed from an L-level signal to an H-level signal.
    Type: Grant
    Filed: January 25, 2024
    Date of Patent: May 6, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Patent number: 12295260
    Abstract: A quinoxaline derivative that is a novel organic compound is provided. A quinoxaline derivative represented by General Formula (G1) has a structure in which a quinoxaline skeleton is bonded to the 9-position of an anthracene skeleton, the 10-position of the anthracene skeleton is bonded to a heteroaromatic ring, and the 3-position of the heteroaromatic ring is nitrogen. In General Formula (G1) shown above, a and b each independently represent a substituted or unsubstituted arylene group having 6 to 13 carbon atoms in a ring. In addition, m and n are each independently 0, 1, or 2.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: May 6, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroshi Kadoma, Satoshi Seo, Takumu Okuyama, Naoaki Hashimoto, Yusuke Takita, Tsunenori Suzuki
  • Patent number: 12295255
    Abstract: A light-emitting device with high emission efficiency and reliability is provided. The light-emitting device includes first and second fluorescent light-emitting layers. A host material used in the first fluorescent light-emitting layer has a function of converting triplet excitation energy into light emission, a guest material used in the first light-emitting layer has a molecular structure including a luminophore and a protecting group, and one molecule of the guest material includes five or more protecting groups. The introduction of the protecting groups into the molecule inhibits transfer of triplet excitation energy by the Dexter mechanism from the host material to the guest material. An alkyl group or a branched-chain alkyl group is used as the protecting groups. The materials are selected such that the triplet excitation energy level of the host material in the second light-emitting layer is lower than the triplet excitation energy level of the guest material in the second light-emitting layer.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: May 6, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Ishisone, Nobuharu Ohsawa, Satoshi Seo
  • Patent number: 12295256
    Abstract: A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.
    Type: Grant
    Filed: October 4, 2023
    Date of Patent: May 6, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takao Hamada, Hiromi Seo, Kanta Abe, Kyoko Takeda, Satoshi Seo
  • Patent number: 12294805
    Abstract: An imaging device with low power consumption is provided. A pixel includes a first circuit and a second circuit. The first circuit can generate imaging data and retain difference data that is a difference between the imaging data and data obtained in an initial frame. The second circuit includes a circuit that compares the difference data and a voltage range set arbitrarily. The second circuit supplies a reading signal based on the comparison result. With the use of the structure, reading from the pixel is not performed when it is determined that the difference data is within the set voltage range and reading from the pixel can be performed when it is determined that the difference data is outside the voltage range.
    Type: Grant
    Filed: February 22, 2024
    Date of Patent: May 6, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Seiichi Yoneda, Hiroki Inoue
  • Publication number: 20250142887
    Abstract: A semiconductor device with favorable electrical characteristics is provided. A semiconductor device with stable electrical characteristics is provided. The semiconductor device includes a semiconductor layer, a first insulating layer, and a first conductive layer. The first insulating layer is provided over the semiconductor layer. The first conductive layer is provided over the first insulating layer. The semiconductor layer includes a first region that overlaps with the first conductive layer and the first insulating layer, a second region that does not overlap with the first conductive layer and overlaps with the first insulating layer, and a third region that overlaps with neither the first conductive layer nor the first insulating layer. The semiconductor layer contains a metal oxide. The second region and the third region contain a first element. The first element is one or more elements selected from boron, phosphorus, aluminum, and magnesium.
    Type: Application
    Filed: December 26, 2024
    Publication date: May 1, 2025
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kenichi OKAZAKI, Masami JINTYOU, Kensuke YOSHIZUMI
  • Publication number: 20250138324
    Abstract: An electronic device with reduced power consumption is provided. A multifunction electronic device that is easily reduced in weight or size is provided. A composite device includes a sensor device and a display device. The sensor device includes a first communication portion and a sensor portion and can be worn on a human body. The display device includes a display portion, a second communication portion, and a control portion. The first communication portion has a function of transmitting a signal including information obtained by the sensor portion. The second communication portion has a function of receiving the signal. The control portion has a function of returning from a resting state in accordance with the signal. The control portion has a function of generating first image data on the basis of the information and outputting the first image data to the display portion. The display portion has a function of displaying an image on the basis of the first image data.
    Type: Application
    Filed: December 31, 2024
    Publication date: May 1, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Takayuki Ikeda, Shuichi Katsui, Yoshiaki Oikawa, Kensuke Yoshizumi
  • Publication number: 20250138650
    Abstract: A highly convenient display system is provided. A display system that enables a screen to be operated easily with a laser pointer is provided. A display system that enables a screen to be operated by a large number of people is provided. The display system includes a light-emitting apparatus and a display device. The light-emitting apparatus includes a means for emitting visible laser light and a means for emitting invisible light. The display device includes a display unit including a means for displaying an image and a means for obtaining positional information on a portion irradiated with the visible light, and a means for receiving the invisible light. The display system has a function of performing processing in accordance with the positional information when the invisible light is received.
    Type: Application
    Filed: January 3, 2025
    Publication date: May 1, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Koji Kusunoki, Daisuke Kubota, Kensuke Yoshizumi