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).
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Patent number: 9653487Abstract: 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: GrantFiled: February 3, 2015Date of Patent: May 16, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Kenichi Okazaki, Masataka Nakada, Masahiro Katayama
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Patent number: 9653523Abstract: A flexible input and output device in which defects due to a crack is reduced. The input and output device includes a first flexible substrate, a second flexible substrate, a first buffer layer, a first crack inhibiting layer, an input device, and a light-emitting element. A first surface of the first flexible substrate faces a second surface of the second flexible substrate. The first buffer layer, the first crack inhibiting layer, and the input device are provided on the first surface side of the first flexible substrate. The first buffer layer includes a region overlapping with the first crack inhibiting layer. The first buffer layer is between the first crack inhibiting layer and the first surface. The input device includes a transistor and a sensor element. The light-emitting element is provided on the second surface side of the second flexible substrate.Type: GrantFiled: April 20, 2015Date of Patent: May 16, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Naoyuki Senda, Masataka Nakada, Takayuki Abe, Koji Kusunoki, Hideaki Shishido
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Publication number: 20170131594Abstract: A novel display device that is highly convenient or reliable. The display device includes a first display element, a second display element, a color film, and a reflective electrode. The first display element includes a first pixel electrode and a liquid crystal layer. The second display element includes a second pixel electrode and a light-emitting layer. The first pixel electrode is electrically connected to the reflective electrode. The reflective electrode includes an opening through which light emitted from the light-emitting layer passes. The color film faces the reflective electrode with the liquid crystal layer placed therebetween.Type: ApplicationFiled: November 2, 2016Publication date: May 11, 2017Inventors: Masataka NAKADA, Takayuki CHO, Daisuke KUBOTA
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Publication number: 20170123251Abstract: A novel display device capable of adjusting color purity is provided. A novel display device with improved adhesion of a color filter is provided. A novel display device capable of excellent reflective display is provided. The display device includes a transistor, a reflective electrode layer formed on the same surface as a source electrode layer or a drain electrode layer of the transistor, a first insulating layer over the reflective electrode layer, a coloring layer which is over the first insulating layer and overlaps with the reflective electrode layer, a second insulating layer over the coloring layer, and a pixel electrode layer over the second insulating layer. The coloring layer includes at least a first opening and a second opening. The pixel electrode layer is electrically connected to the transistor through the first opening. The second insulating layer is in contact with the first insulating layer in the second opening.Type: ApplicationFiled: January 17, 2017Publication date: May 4, 2017Inventors: Masataka NAKADA, Hidenori MORI, Hisashi OHTANI
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Patent number: 9640669Abstract: In a semiconductor device including a transistor, the transistor is provided over a first insulating film, and the transistor includes an oxide semiconductor film over the first insulating film, a gate insulating film over the oxide semiconductor film, a gate electrode over the gate insulating film, a second insulating film over the oxide semiconductor film and the gate electrode, and a source and a drain electrodes electrically connected to the oxide semiconductor film. The first insulating film includes oxygen. The second insulating film includes hydrogen. The oxide semiconductor film includes a first region in contact with the gate insulating film and a second region in contact with the second insulating film. The first insulating film includes a third region overlapping with the first region and a fourth region overlapping with the second region. The impurity element concentration of the fourth region is higher than that of the third region.Type: GrantFiled: March 6, 2015Date of Patent: May 2, 2017Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Shunpei Yamazaki, Junichi Koezuka, Yukinori Shima, Masami Jintyou, Daisuke Kurosaki, Masataka Nakada
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Publication number: 20170102598Abstract: 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: ApplicationFiled: October 4, 2016Publication date: April 13, 2017Inventors: Masataka NAKADA, Masahiro KATAYAMA, Seiji YASUMOTO, Hiroki ADACHI, Masataka SATO, Koji KUSUNOKI, Yoshiharu HIRAKATA
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Publication number: 20170104049Abstract: 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: ApplicationFiled: October 11, 2016Publication date: April 13, 2017Inventors: Daiki NAKAMURA, Kohei YOKOYAMA, Yasuhiro JINBO, Toshiki SASAKI, Masataka NAKADA, Naoto GOTO, Takahiro IGUCHI
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Publication number: 20170053950Abstract: 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: ApplicationFiled: November 8, 2016Publication date: February 23, 2017Inventors: Junichi KOEZUKA, Masami JINTYOU, Yukinori SHIMA, Daisuke KUROSAKI, Masataka NAKADA, Shunpei YAMAZAKI
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Publication number: 20170033238Abstract: 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: ApplicationFiled: August 2, 2016Publication date: February 2, 2017Inventors: Junichi KOEZUKA, Masami JINTYOU, Yukinori SHIMA, Daisuke KUROSAKI, Masataka NAKADA, Shunpei YAMAZAKI
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Patent number: 9553114Abstract: A novel display device capable of adjusting color purity is provided. A novel display device with improved adhesion of a color filter is provided. A novel display device capable of excellent reflective display is provided. The display device includes a transistor, a reflective electrode layer formed on the same surface as a source electrode layer or a drain electrode layer of the transistor, a first insulating layer over the reflective electrode layer, a coloring layer which is over the first insulating layer and overlaps with the reflective electrode layer, a second insulating layer over the coloring layer, and a pixel electrode layer over the second insulating layer. The coloring layer includes at least a first opening and a second opening. The pixel electrode layer is electrically connected to the transistor through the first opening. The second insulating layer is in contact with the first insulating layer in the second opening.Type: GrantFiled: October 16, 2014Date of Patent: January 24, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Masataka Nakada, Hidenori Mori, Hisashi Ohtani
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Patent number: 9530894Abstract: 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: GrantFiled: February 5, 2015Date of Patent: December 27, 2016Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Junichi Koezuka, Masami Jintyou, Yukinori Shima, Daisuke Kurosaki, Masataka Nakada, Shunpei Yamazaki
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Patent number: 9525011Abstract: A flexible input and output device in which defects due to a crack is reduced. The input and output device includes a first flexible substrate, a second flexible substrate, a first buffer layer, a first crack inhibiting layer, an input device, and a light-emitting element. A first surface of the first flexible substrate faces a second surface of the second flexible substrate. The first buffer layer, the first crack inhibiting layer, and the input device are provided on the first surface side of the first flexible substrate. The first buffer layer includes a region overlapping with the first crack inhibiting layer. The first buffer layer is between the first crack inhibiting layer and the first surface. The input device includes a transistor and a sensor element. The light-emitting element is provided on the second surface side of the second flexible substrate.Type: GrantFiled: April 20, 2015Date of Patent: December 20, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Naoyuki Senda, Masataka Nakada, Takayuki Abe, Koji Kusunoki, Hideaki Shishido
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Patent number: 9502440Abstract: A novel display device capable of excellent reflective display is provided. The display device includes a transistor including a gate electrode layer, a gate insulating layer over the gate electrode layer, a semiconductor layer over the gate insulating layer, and a source electrode layer and a drain electrode layer over the gate insulating layer and the semiconductor layer; a reflective electrode layer on the same plane as the source electrode layer and the drain electrode layer; a coloring layer overlapping with the reflective electrode layer; a pixel electrode layer overlapping with the coloring layer; and an anti-oxidation conductive layer connected to one of the source electrode layer and the drain electrode layer. The pixel electrode layer is connected to the transistor through the anti-oxidation conductive layer.Type: GrantFiled: December 30, 2015Date of Patent: November 22, 2016Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Masataka Nakada, Hidenori Mori, Hisashi Ohtani
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Publication number: 20160336352Abstract: 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: ApplicationFiled: July 27, 2016Publication date: November 17, 2016Inventors: Shunpei YAMAZAKI, Kenichi OKAZAKI, Masahiro KATAYAMA, Masataka NAKADA
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Patent number: 9443876Abstract: 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: GrantFiled: January 26, 2015Date of Patent: September 13, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Kenichi Okazaki, Masahiro Katayama, Masataka Nakada
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Patent number: 9412876Abstract: 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: GrantFiled: January 29, 2015Date of Patent: August 9, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Junichi Koezuka, Masami Jintyou, Yukinori Shima, Daisuke Kurosaki, Masataka Nakada, Shunpei Yamazaki
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Publication number: 20160111445Abstract: A novel display device capable of excellent reflective display is provided. The display device includes a transistor including a gate electrode layer, a gate insulating layer over the gate electrode layer, a semiconductor layer over the gate insulating layer, and a source electrode layer and a drain electrode layer over the gate insulating layer and the semiconductor layer; a reflective electrode layer on the same plane as the source electrode layer and the drain electrode layer; a coloring layer overlapping with the reflective electrode layer; a pixel electrode layer overlapping with the coloring layer; and an anti-oxidation conductive layer connected to one of the source electrode layer and the drain electrode layer. The pixel electrode layer is connected to the transistor through the anti-oxidation conductive layer.Type: ApplicationFiled: December 30, 2015Publication date: April 21, 2016Inventors: Masataka NAKADA, Hidenori MORI, Hisashi OHTANI
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Patent number: 9245907Abstract: A novel display device capable of excellent reflective display is provided. The display device includes a transistor including a gate electrode layer, a gate insulating layer over the gate electrode layer, a semiconductor layer over the gate insulating layer, and a source electrode layer and a drain electrode layer over the gate insulating layer and the semiconductor layer; a reflective electrode layer on the same plane as the source electrode layer and the drain electrode layer; a coloring layer overlapping with the reflective electrode layer; a pixel electrode layer overlapping with the coloring layer; and an anti-oxidation conductive layer connected to one of the source electrode layer and the drain electrode layer. The pixel electrode layer is connected to the transistor through the anti-oxidation conductive layer.Type: GrantFiled: March 18, 2014Date of Patent: January 26, 2016Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Masataka Nakada, Hidenori Mori, Hisashi Ohtani
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Patent number: 9246133Abstract: One embodiment of the present invention relates to a light-emitting device comprising an insulating surface; a lower electrode over the insulating surface; a protrusion over the insulating surface having a sidewall sloping toward the lower electrode; a light-transmitting partition overlapping with an end portion of the lower electrode and the sidewall of the protrusion; and a light-emitting element including the lower electrode, an upper electrode overlapping with the lower electrode, and a layer containing a light-emitting organic compound between the lower electrode and the upper electrode. In the light-emitting device, the sidewall of the protrusion can reflect light emitted from the light-emitting element. As a result, the light-emitting device that has reduced power consumption is provided.Type: GrantFiled: April 2, 2014Date of Patent: January 26, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Hisao Ikeda, Masataka Nakada, Masami Jintyou, Koji Ono
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Patent number: 9246009Abstract: An object is to improve water resistance and reliability of a semiconductor device by reducing the degree of peeling of a film. In a semiconductor device, a first inorganic insulating layer, a semiconductor element layer, a second inorganic insulating layer, an organic insulating layer, and a third inorganic insulating layer are sequentially stacked over a substrate. The second inorganic insulating layer is in contact with the first inorganic insulating layer in an opening portion provided in the semiconductor element layer. The third inorganic insulating layer is in contact with the second inorganic insulating layer in an opening portion provided in the organic insulating layer. In a region where the second inorganic insulating layer and the third inorganic insulating layer are in contact with each other, the second inorganic insulating layer has a plurality of irregularities or openings.Type: GrantFiled: April 13, 2015Date of Patent: January 26, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiaki Oikawa, Masayuki Kajiwara, Masataka Nakada, Masami Jintyou, Shunpei Yamazaki