Patents by Inventor Masataka Nakada

Masataka Nakada 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: 10804487
    Abstract: A flexible device with fewer defects caused by a crack is provided. A flexible device with high productivity is also provided. Furthermore, a flexible device with less display failure even in a high temperature and high humidity environment is provided. A light-emitting device includes a first flexible substrate, a second flexible substrate, a buffer layer, a first crack inhibiting layer, and a light-emitting element. A first surface of the first flexible substrate faces a second surface of the second flexible substrate. The buffer layer and the first crack inhibiting layer are provided over the first surface of the first flexible substrate. The buffer layer overlaps with the first crack inhibiting layer. The light-emitting element is provided over the second surface of the second flexible substrate.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 13, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masataka Nakada, Takayuki Abe, Naoyuki Senda
  • Patent number: 10763282
    Abstract: A semiconductor device including an oxide semiconductor in which on-state current is high is provided. The semiconductor device includes a first transistor provided in a driver circuit portion and a second transistor provided in a pixel portion; the first transistor and the second transistor have different structures. Furthermore, the first transistor and the second transistor are transistors having a top-gate structure. In an oxide semiconductor film of each of the transistors, an impurity element is contained in regions which do not overlap with a gate electrode. The regions of the oxide semiconductor film which contain the impurity element function as low-resistance regions. Furthermore, the regions of the oxide semiconductor film which contain the impurity element are in contact with a film containing hydrogen. The first transistor provided in the driver circuit portion includes two gate electrodes between which the oxide semiconductor film is provided.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: September 1, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Junichi Koezuka, Masami Jintyou, Yukinori Shima, Daisuke Kurosaki, Masataka Nakada, Shunpei Yamazaki
  • Publication number: 20200052100
    Abstract: A semiconductor layer containing a metal oxide is formed, a gate insulating layer containing an oxide is formed over the semiconductor layer, and a metal oxide layer is formed over the gate insulating layer. Heat treatment is performed after the metal oxide layer is formed, and the metal oxide layer is removed after the heat treatment is performed. After the metal oxide layer is removed, a gate electrode overlapping with part of the semiconductor layer is formed over the gate insulating layer. Then, a first element is supplied through the gate insulating layer to a region of the semiconductor layer that does not overlap with the gate electrode. Examples of the first element include phosphorus, boron, magnesium, aluminum, and silicon. The steps performed after the metal oxide layer is removed are each preferably performed at a temperature lower than or equal to the temperature of the heat treatment.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 13, 2020
    Inventors: Junichi KOEZUKA, Kenichi OKAZAKI, Masataka NAKADA, Yasuharu HOSAKA
  • Publication number: 20190355764
    Abstract: A semiconductor device including an oxide semiconductor in which on-state current is high is provided. The semiconductor device includes a first transistor provided in a driver circuit portion and a second transistor provided in a pixel portion; the first transistor and the second transistor have different structures. Furthermore, the first transistor and the second transistor are transistors having a top-gate structure. In an oxide semiconductor film of each of the transistors, an impurity element is contained in regions which do not overlap with a gate electrode. The regions of the oxide semiconductor film which contain the impurity element function as low-resistance regions. Furthermore, the regions of the oxide semiconductor film which contain the impurity element are in contact with a film containing hydrogen. The first transistor provided in the driver circuit portion includes two gate electrodes between which the oxide semiconductor film is provided.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 21, 2019
    Inventors: Junichi KOEZUKA, Masami JINTYOU, Yukinori SHIMA, Daisuke KUROSAKI, Masataka NAKADA, Shunpei YAMAZAKI
  • Publication number: 20190288092
    Abstract: A semiconductor device is manufactured with high mass productivity at low cost. Yield in a manufacturing process of the semiconductor device is improved. An island-shaped metal oxide layer is formed over a substrate, a resin layer is formed over the metal oxide layer to cover an end portion of the metal oxide layer, and the metal oxide layer and the resin layer are separated by light irradiation. After forming the resin layer and before the light irradiation, an insulating layer is formed over the resin layer. For example, the resin layer is formed in an island shape and the insulating layer is formed to cover an end portion of the resin layer. In the case where an adhesive layer is formed over the resin layer, the adhesive layer is preferably formed to be located inward from the end portion of the metal oxide layer.
    Type: Application
    Filed: October 25, 2017
    Publication date: September 19, 2019
    Inventors: Masahiro KATAYAMA, Masayoshi DOBASHI, Masataka NAKADA
  • Publication number: 20190244981
    Abstract: To provide a semiconductor device including a planar transistor having an oxide semiconductor and a capacitor. In a semiconductor device, a transistor includes an oxide semiconductor film, a gate insulating film over the oxide semiconductor film, a gate electrode over the gate insulating film, a second insulating film over the gate electrode, a third insulating film over the second insulating film, and a source and a drain electrodes over the third insulating film; the source and the drain electrodes are electrically connected to the oxide semiconductor film; a capacitor includes a first and a second conductive films and the second insulating film; the first conductive film and the gate electrode are provided over the same surface; the second conductive film and the source and the drain electrodes are provided over the same surface; and the second insulating film is provided between the first and the second conductive films.
    Type: Application
    Filed: March 22, 2019
    Publication date: August 8, 2019
    Inventors: Shunpei YAMAZAKI, Kenichi OKAZAKI, Masahiro KATAYAMA, Masataka NAKADA
  • Patent number: 10373981
    Abstract: A semiconductor device includes a transistor and a capacitor. The transistor includes a first conductive film; a first insulating film including a film containing hydrogen; a second insulating film including an oxide insulating film; an oxide semiconductor film including a first region and a pair of second regions; a pair of electrodes; a gate insulating film; and a second conductive film. The capacitor includes a lower electrode, an inter-electrode insulating film, and an upper electrode. The lower electrode contains the same material as the first conductive film. The inter-electrode insulating film includes a third insulating film containing the same material as the first insulating film and a fourth insulating film containing the same material as the gate insulating film. The upper electrode contains the same material as the second conductive film. A fifth insulating film containing hydrogen is provided over the transistor.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: August 6, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenichi Okazaki, Masataka Nakada, Masahiro Katayama
  • Patent number: 10367013
    Abstract: A semiconductor device including an oxide semiconductor in which on-state current is high is provided. The semiconductor device includes a first transistor provided in a driver circuit portion and a second transistor provided in a pixel portion; the first transistor and the second transistor have different structures. Furthermore, the first transistor and the second transistor are transistors having a top-gate structure. In an oxide semiconductor film of each of the transistors, an impurity element is contained in regions which do not overlap with a gate electrode. The regions of the oxide semiconductor film which contain the impurity element function as low-resistance regions. Furthermore, the regions of the oxide semiconductor film which contain the impurity element are in contact with a film containing hydrogen. The first transistor provided in the driver circuit portion includes two gate electrodes between which the oxide semiconductor film is provided.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 30, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Junichi Koezuka, Masami Jintyou, Yukinori Shima, Daisuke Kurosaki, Masataka Nakada, Shunpei Yamazaki
  • Patent number: 10345668
    Abstract: Provided is a novel display panel that is highly convenient or highly reliable, a novel input/output device that is highly convenient or highly reliable, or a method for manufacturing a novel display panel that is highly convenient or highly reliable. The present inventors conceived a structure including a first intermediate film, a first electrode including a region in contact with the first intermediate film, a pixel that includes a first display element including the first electrode and a pixel circuit electrically connected to the first display element, a signal line electrically connected to the pixel, and a terminal that includes a third conductive film electrically connected to the signal line and a second intermediate film including a region in contact with the third conductive film.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: July 9, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masataka Nakada, Masahiro Katayama, Seiji Yasumoto, Hiroki Adachi, Masataka Sato, Koji Kusunoki, Yoshiharu Hirakata
  • Publication number: 20190189856
    Abstract: An object is to provide a highly reliable light emitting device which is thin and is not damaged by external local pressure. Further, another object is to manufacture a light emitting device with a high yield by preventing defects of a shape and characteristics due to external stress in a manufacture process. A light emitting element is sealed between a first structure body in which a fibrous body is impregnated with an organic resin and a second structure body in which a fibrous body is impregnated with an organic resin, whereby a highly reliable light emitting device which is thin and has intensity can be provided. Further, a light emitting device can be manufactured with a high yield by preventing defects of a shape and characteristics in a manufacture process.
    Type: Application
    Filed: February 7, 2019
    Publication date: June 20, 2019
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiaki OIKAWA, Shingo Eguchi, Mitsuo Mashiyama, Masatoshi Kataniwa, Hironobu Shoji, Masataka Nakada, Satoshi Seo
  • Patent number: 10304919
    Abstract: To provide a display device with a manufacturing yield and/or a display device with suppressed mixture of colors between adjacent pixels. The display device includes a first pixel electrode, a second pixel electrode, a first insulating layer, a second insulating layer, and an adhesive layer. The first insulating layer includes a first opening. The second insulating layer includes a second opening. The first opening and the second opening are provided between the first pixel electrode and the second pixel electrode. In a top view, a periphery of the second opening is positioned on an inner side than a periphery of the first opening. The adhesive layer has a region overlapping with the second insulating layer below the second insulating layer.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: May 28, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yasuhiro Jinbo, Kohei Yokoyama, Yuki Tamatsukuri, Naoto Goto, Masami Jintyou, Masayoshi Dobashi, Masataka Nakada, Akihiro Chida, Naoyuki Senda
  • Patent number: 10249768
    Abstract: The semiconductor device includes a first transistor provided in a driver circuit portion and a second transistor provided in a pixel portion; the first transistor and the second transistor have different structures. In an oxide semiconductor film of each of the transistors, an impurity element is contained in regions which do not overlap with a gate electrode. The regions of the oxide semiconductor film which contain the impurity element function as low-resistance regions. Furthermore, the regions of the oxide semiconductor film which contain the impurity element are in contact with a film containing hydrogen. Furthermore, the first transistor provided in the driver circuit portion may include the oxide semiconductor film in which a first film and a second film are stacked, and the second transistor provided in the pixel portion may include the oxide semiconductor film which differs from the first film in the atomic ratio of metal elements.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: April 2, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Junichi Koezuka, Masami Jintyou, Yukinori Shima, Daisuke Kurosaki, Masataka Nakada, Shunpei Yamazaki
  • Patent number: 10249645
    Abstract: To provide a semiconductor device including a planar transistor having an oxide semiconductor and a capacitor. In a semiconductor device, a transistor includes an oxide semiconductor film, a gate insulating film over the oxide semiconductor film, a gate electrode over the gate insulating film, a second insulating film over the gate electrode, a third insulating film over the second insulating film, and a source and a drain electrodes over the third insulating film; the source and the drain electrodes are electrically connected to the oxide semiconductor film; a capacitor includes a first and a second conductive films and the second insulating film; the first conductive film and the gate electrode are provided over the same surface; the second conductive film and the source and the drain electrodes are provided over the same surface; and the second insulating film is provided between the first and the second conductive films.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: April 2, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenichi Okazaki, Masahiro Katayama, Masataka Nakada
  • Patent number: 10205062
    Abstract: An object is to provide a highly reliable light emitting device which is thin and is not damaged by external local pressure. Further, another object is to manufacture a light emitting device with a high yield by preventing defects of a shape and characteristics due to external stress in a manufacture process. A light emitting element is sealed between a first structure body in which a fibrous body is impregnated with an organic resin and a second structure body in which a fibrous body is impregnated with an organic resin, whereby a highly reliable light emitting device which is thin and has intensity can be provided. Further, a light emitting device can be manufactured with a high yield by preventing defects of a shape and characteristics in a manufacture process.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: February 12, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiaki Oikawa, Shingo Eguchi, Mitsuo Mashiyama, Masatoshi Kataniwa, Hironobu Shoji, Masataka Nakada, Satoshi Seo
  • Publication number: 20180374995
    Abstract: An object is to provide a highly reliable light emitting device which is thin and is not damaged by external local pressure. Further, another object is to manufacture a light emitting device with a high yield by preventing defects of a shape and characteristics due to external stress in a manufacture process. A light emitting element is sealed between a first structure body in which a fibrous body is impregnated with an organic resin and a second structure body in which a fibrous body is impregnated with an organic resin, whereby a highly reliable light emitting device which is thin and has intensity can be provided. Further, a light emitting device can be manufactured with a high yield by preventing defects of a shape and characteristics in a manufacture process.
    Type: Application
    Filed: September 4, 2018
    Publication date: December 27, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiaki Oikawa, Shingo EGUCHI, Mitsuo MASHIYAMA, Masatoshi KATANIWA, Hironobu SHOJI, Masataka NAKADA, Satoshi SEO
  • Publication number: 20180350994
    Abstract: In a transistor that includes an oxide semiconductor, a change in electrical characteristics is suppressed and the reliability is improved. A semiconductor device that includes a transistor is provided. The transistor includes a first conductive film that functions as a first gate electrode, a first gate insulating film, a first oxide semiconductor film that includes a channel region, a second gate insulating film, and a second oxide semiconductor film and a second conductive film that function as a second gate electrode. The second oxide semiconductor film includes a region higher in carrier density than the first oxide semiconductor film. The second conductive film includes a region in contact with the first conductive film.
    Type: Application
    Filed: November 9, 2016
    Publication date: December 6, 2018
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Yasuharu HOSAKA, Yukinori SHIMA, Masataka NAKADA, Masami JINTYOU
  • Patent number: 10147780
    Abstract: A novel display device that is highly convenient with low power consumption is provided. The display device includes a display element including a liquid crystal layer, a display element including a light-emitting layer, and a pixel circuit. Electrodes of the display element including the liquid crystal layer and the display element including the light-emitting layer are electrically connected to the pixel circuit. The electrode of the display element including the liquid crystal layer includes a reflective film including an opening. The pixel circuit includes a transistor including a semiconductor film. The number of insulating films in a region overlapping with the opening is smaller than that of insulating films overlapping with the semiconductor film. In addition, the display element including the light-emitting layer includes two light-emitting elements.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: December 4, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daiki Nakamura, Kohei Yokoyama, Yasuhiro Jinbo, Toshiki Sasaki, Masataka Nakada, Naoto Goto, Takahiro Iguchi
  • Patent number: 10096721
    Abstract: To provide a semiconductor device with small parasitic capacitance. Alternatively, to provide a semiconductor device with low power consumption. The semiconductor device includes a transistor and a capacitor. The transistor includes a first conductor, a first insulator over the first conductor, a semiconductor including a region overlapping with the first conductor with the first insulator interposed therebetween, a second insulator over the semiconductor, a second conductor including a region overlapping with the semiconductor with the second insulator interposed therebetween, and a third conductor and a fourth conductor including a region in contact with a top surface of the semiconductor. The capacitor includes a layer formed from the same layer as the first conductor and a layer formed from the same layer as the third conductor and the fourth conductor.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: October 9, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenichi Okazaki, Masataka Nakada, Masahiro Katayama
  • Publication number: 20180275474
    Abstract: Provided is a novel display panel that is highly convenient or highly reliable, a novel input/output device that is highly convenient or highly reliable, or a method for manufacturing a novel display panel that is highly convenient or highly reliable. The present inventors conceived a structure including a first intermediate film, a first electrode including a region in contact with the first intermediate film, a pixel that includes a first display element including the first electrode and a pixel circuit electrically connected to the first display element, a signal line electrically connected to the pixel, and a terminal that includes a third conductive film electrically connected to the signal line and a second intermediate film including a region in contact with the third conductive film.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 27, 2018
    Inventors: Masataka NAKADA, Masahiro KATAYAMA, Seiji YASUMOTO, Hiroki ADACHI, Masataka SATO, Koji KUSUNOKI, Yoshiharu HIRAKATA
  • Patent number: 10079330
    Abstract: An object is to provide a highly reliable light emitting device which is thin and is not damaged by external local pressure. Further, another object is to manufacture a light emitting device with a high yield by preventing defects of a shape and characteristics due to external stress in a manufacture process. A light emitting element is sealed between a first structure body in which a fibrous body is impregnated with an organic resin and a second structure body in which a fibrous body is impregnated with an organic resin, whereby a highly reliable light emitting device which is thin and has intensity can be provided. Further, a light emitting device can be manufactured with a high yield by preventing defects of a shape and characteristics in a manufacture process.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: September 18, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiaki Oikawa, Shingo Eguchi, Mitsuo Mashiyama, Masatoshi Kataniwa, Hironobu Shoji, Masataka Nakada, Satoshi Seo