Patents by Inventor Michiaki Sakamoto
Michiaki Sakamoto 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: 11762227Abstract: The purpose is to form images in a middle of a transparent media. Accordingly, the present invention has a structure as follows. A display device including: a plate shaped display medium, having a first major surface and a second major surface, disposed on the pedestal, in which the display medium includes the liquid crystal display panel, disposed in a first transparent medium of refractive index n1, first LEDs, which supply light to the liquid crystal display panel, are disposed in the pedestal, a second transparent medium of refractive index n2 exists between the first LEDs and the liquid crystal display panel, and n2>n1.Type: GrantFiled: July 12, 2021Date of Patent: September 19, 2023Assignee: Japan Display Inc.Inventors: Youhei Iwai, Michiaki Sakamoto
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Publication number: 20230187558Abstract: A semiconductor device includes a gate electrode on a substrate, a gate insulating film on the gate electrode, an oxide semiconductor film via the gate insulating film on the gate electrode, a source electrode and a drain electrode on the oxide semiconductor film, a protective film provided on the source electrode and the drain electrode; and a conductive layer provided on the protective film and overlapped on the oxide semiconductor layer. The protective film includes a first silicon oxide film and a first silicon nitride film. The first oxide film is in contact with the oxide semiconductor layer. The gate insulating film includes a second silicon nitride film and a second silicon oxide film. The second silicon oxide film is in contact with the oxide semiconductor layer. The oxide semiconductor layer has a first region located between the source electrode and the drain electrode in a plan view.Type: ApplicationFiled: February 1, 2023Publication date: June 15, 2023Applicant: Japan Display Inc.Inventors: Masashi TSUBUKU, Michiaki SAKAMOTO, Takashi OKADA, Toshiki KANEKO, Tatsuya TODA
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Patent number: 11594641Abstract: A semiconductor device includes a gate electrode on a substrate, a gate insulating film on the gate electrode, an oxide semiconductor film via the gate insulating film on the gate electrode, a source electrode and a drain electrode on the oxide semiconductor film, a protective film provided on the source electrode and the drain electrode; and a conductive layer provided on the protective film and overlapped on the oxide semiconductor layer. The protective film includes a first silicon oxide film and a first silicon nitride film. The first oxide film is in contact with the oxide semiconductor layer. The gate insulating film includes a second silicon nitride film and a second silicon oxide film. The second silicon oxide film is in contact with the oxide semiconductor layer. The oxide semiconductor layer has a first region located between the source electrode and the drain electrode in a plan view.Type: GrantFiled: December 4, 2020Date of Patent: February 28, 2023Assignee: Japan Display Inc.Inventors: Masashi Tsubuku, Michiaki Sakamoto, Takashi Okada, Toshiki Kaneko, Tatsuya Toda
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Patent number: 11579700Abstract: A display apparatus includes: a display panel; an enclosure enclosing the display panel; a cover member covering a front surface of the display panel; an actuator connected to the cover member and having a function of applying vibration to the cover member; and a viscous body arranged between the display panel and the cover member. The viscous body is bonded to the display panel and the cover member, and, when a periodic stress having a vibration frequency of ½ period per second is applied to the viscous body, a dynamic elastic modulus of the viscous body is equal to or lower than 1×10?3 of Young's modulus of the viscous body.Type: GrantFiled: September 3, 2021Date of Patent: February 14, 2023Assignee: Japan Display Inc.Inventors: Shinichiro Oka, Michiaki Sakamoto
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Publication number: 20220203402Abstract: A tactile device includes: a substrate provided with a first surface; an organic piezoelectric film arranged on the first surface side; a plurality of electrodes arranged on the first surface; and a plurality of drive circuits arranged between the substrate and the organic piezoelectric film. The plurality of electrodes includes: a common electrode arranged across a plurality of cells; and a plurality of driving electrodes respectively arranged in the plurality of cells. The plurality of drive circuits includes: a first drive circuit capable of supplying a first driving signal; and a second drive circuit capable of supplying a second driving signal. The plurality of driving electrodes includes: a first driving electrode connected to the first drive circuit; and a second driving electrode connected to the second drive circuit. The first driving electrode and the second driving electrode are arranged in each of the plurality of cells.Type: ApplicationFiled: March 17, 2022Publication date: June 30, 2022Applicant: Japan Display Inc.Inventor: Michiaki SAKAMOTO
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Publication number: 20210397262Abstract: A display apparatus includes: a display panel; an enclosure enclosing the display panel; a cover member covering a front surface of the display panel; an actuator connected to the cover member and having a function of applying vibration to the cover member; and a viscous body arranged between the display panel and the cover member. The viscous body is bonded to the display panel and the cover member, and, when a periodic stress having a vibration frequency of ½ period per second is applied to the viscous body, a dynamic elastic modulus of the viscous body is equal to or lower than 1×10?3 of Young's modulus of the viscous body.Type: ApplicationFiled: September 3, 2021Publication date: December 23, 2021Applicant: Japan Display Inc.Inventors: Shinichiro OKA, Michiaki SAKAMOTO
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Publication number: 20210341810Abstract: The purpose is to form images in a middle of a transparent media. Accordingly, the present invention has a structure as follows. A display device including: a plate shaped display medium, having a first major surface and a second major surface, disposed on the pedestal, in which the display medium includes the liquid crystal display panel, disposed in a first transparent medium of refractive index n1, first LEDs, which supply light to the liquid crystal display panel, are disposed in the pedestal, a second transparent medium of refractive index n2 exists between the first LEDs and the liquid crystal display panel, and n2>n1.Type: ApplicationFiled: July 12, 2021Publication date: November 4, 2021Inventors: Youhei IWAI, Michiaki SAKAMOTO
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Publication number: 20210091226Abstract: A semiconductor device includes a gate electrode on a substrate, a gate insulating film on the gate electrode, an oxide semiconductor film via the gate insulating film on the gate electrode, a source electrode and a drain electrode on the oxide semiconductor film, a protective film provided on the source electrode and the drain electrode; and a conductive layer provided on the protective film and overlapped on the oxide semiconductor layer. The protective film includes a first silicon oxide film and a first silicon nitride film. The first oxide film is in contact with the oxide semiconductor layer. The gate insulating film includes a second silicon nitride film and a second silicon oxide film. The second silicon oxide film is in contact with the oxide semiconductor layer. The oxide semiconductor layer has a first region located between the source electrode and the drain electrode in a plan view.Type: ApplicationFiled: December 4, 2020Publication date: March 25, 2021Applicant: Japan Display Inc.Inventors: Masashi TSUBUKU, Michiaki SAKAMOTO, Takashi OKADA, Toshiki KANEKO, Tatsuya TODA
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Patent number: 10394369Abstract: According to one embodiment, a display device includes a display area with pixels, and a detection electrode which includes first conductive lines overlapping the display area. Each of the pixels includes a first subpixel, a second subpixel adjacent to the first subpixel in a first direction, a third subpixel adjacent to the first subpixel in a second direction, and a fourth subpixel adjacent to the third subpixel in the first direction and to the second subpixel in the second direction. The pixels are arranged in the first direction with a first pitch, and the first conductive lines are arranged in the first direction with a second pitch which falls within a range of 2.2 times the first pitch or more and 3.2 times the first pitch or less.Type: GrantFiled: October 13, 2016Date of Patent: August 27, 2019Assignee: Japan Display Inc.Inventors: Takeyuki Tsuruma, Masaru Uchiyama, Michiaki Sakamoto, Koji Ishizaki
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Patent number: 10191336Abstract: The purpose of the invention is to suppress image persistence. The structure if the invention is as follows: A liquid crystal display device comprising: scanning lines extending in a first direction and arranged in a second direction, video signal lines arranged to cross the scanning lines, a pixel area is surrounded by the scanning lines and the video signal lines, a pixel electrode is formed in the pixel area, wherein conductive wirings are formed over the video signal lines via an organic insulating film in a plan view in the display area where images are displayed, a width in the first direction of the conductive wiring is bigger than a width in the first direction of the video signal line, an amount that the conductive wiring protrude the video signal line in a plan view is essentially the same in both side of the video signal line.Type: GrantFiled: October 16, 2017Date of Patent: January 29, 2019Assignee: Japan Display Inc.Inventors: Masateru Morimoto, Michiaki Sakamoto, Takeshi Sato
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Patent number: 10078407Abstract: According to one embodiment, a display device includes a first substrate including a scanning line, a control line, a control electrode, a signal line, a pixel electrode, a first switching element, and a second switching element. The first switching element includes a first semiconductor layer, a first gate electrode, and a first insulating film. The second switching element includes a second semiconductor layer, a second gate electrode, and a second insulating film. The control electrode is overlapped with the second gate electrode.Type: GrantFiled: June 16, 2016Date of Patent: September 18, 2018Assignee: Japan Display Inc.Inventor: Michiaki Sakamoto
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Publication number: 20180129104Abstract: The purpose of the invention is to suppress image persistence. The structure if the invention is as follows: A liquid crystal display device comprising: scanning lines extending in a first direction and arranged in a second direction, video signal lines arranged to cross the scanning lines, a pixel area is surrounded by the scanning lines and the video signal lines, a pixel electrode is formed in the pixel area, wherein conductive wirings are formed over the video signal lines via an organic insulating film in a plan view in the display area where images are displayed, a width in the first direction of the conductive wiring is bigger than a width in the first direction of the video signal line, an amount that the conductive wiring protrude the video signal line in a plan view is essentially the same in both side of the video signal line.Type: ApplicationFiled: October 16, 2017Publication date: May 10, 2018Inventors: Masateru MORIMOTO, Michiaki SAKAMOTO, Takeshi SATO
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Patent number: 9911791Abstract: In a display device, light emitting areas and colored areas each have a predetermined planar shape having no rotational symmetry so that rotation of the area by an angle greater than or equal to 0° but smaller than 360° does not produce an initial shape of the area and are so arranged as to have different types of rotation angle. The colored areas are grouped based on a set of the colored areas of colors different from one another to forma plurality of full-color pixels. The full-color pixels are so arranged that the rotation angle of the colored areas of the same color have different types. In the full-color pixels of the same type, the colored areas of the same color have the same rotation angle. In the full-color pixels of different types, the colored areas of the same color have different rotation angles.Type: GrantFiled: October 27, 2016Date of Patent: March 6, 2018Assignee: Japan Display Inc.Inventors: Haochun Lee, Michiaki Sakamoto, Masaru Uchiyama, Masaya Adachi, Toshihiro Sato
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Patent number: 9736450Abstract: An image display device includes region of interest extraction unit, parallax image generation unit and 3D image display unit. Region of interest extraction unit generates depth image signal by depth image conversion employing depth threshold, depth image signal including information on distance in three-dimensional space between viewpoint and each pixel of two-dimensional image including region of interest desired to be noted by observer, depth image conversion being such that depth value indicating distance between viewpoint and each pixel of two-dimensional image is converted to depth value for 2D display when depth value is equal to or larger than depth threshold. Parallax image generation unit generates both-eye parallax image having parallax in region of interest alone, from two-dimensional image and image obtained by conversion of region of interest image representing region of interest at each of both-eye viewpoints, based on two-dimensional image and depth image signal.Type: GrantFiled: November 25, 2015Date of Patent: August 15, 2017Assignee: NLT TECHNOLOGIES, LTD.Inventors: Di Wu, Michiaki Sakamoto
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Publication number: 20170179206Abstract: In a display device, light emitting areas and colored areas each have a predetermined planar shape having no rotational symmetry so that rotation of the area by an angle greater than or equal to 0° but smaller than 360° does not produce an initial shape of the area and are so arranged as to have different types of rotation angle. The colored areas are grouped based on a set of the colored areas of colors different from one another to forma plurality of full-color pixels. The full-color pixels are so arranged that the rotation angle of the colored areas of the same color have different types. In the full-color pixels of the same type, the colored areas of the same color have the same rotation angle. In the full-color pixels of different types, the colored areas of the same color have different rotation angles.Type: ApplicationFiled: October 27, 2016Publication date: June 22, 2017Applicant: Japan Display Inc.Inventors: Haochun LEE, Michiaki SAKAMOTO, Masaru UCHIYAMA, Masaya ADACHI, Toshihiro SATO
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Publication number: 20170177147Abstract: According to one embodiment, a display device comprises pixel electrodes, a drive electrode, a detection electrode, and a detection module. The pixel electrodes are provided for respective pixels arrayed in a display area. The drive electrode forms an electric field for image display with the pixel electrodes. The detection electrode is opposed to the drive electrode. And The detection module detects an object in proximity to the display area based on a signal obtained from the detection electrode. In the display device, the detection electrode includes conductive lines extending parallel to each other, and the conductive lines are arranged at randomized pitch.Type: ApplicationFiled: December 13, 2016Publication date: June 22, 2017Applicant: JAPAN DISPLAY INC.Inventors: MICHIAKI SAKAMOTO, KOJI ISHIZAKI, TAKEYUKI TSURUMA
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Publication number: 20170102817Abstract: According to one embodiment, a display device includes a display area with pixels, and a detection electrode which includes first conductive lines overlapping the display area. Each of the pixels includes a first subpixel, a second subpixel adjacent to the first subpixel in a first direction, a third subpixel adjacent to the first subpixel in a second direction, and a fourth subpixel adjacent to the third subpixel in the first direction and to the second subpixel in the second direction. The pixels are arranged in the first direction with a first pitch, and the first conductive lines are arranged in the first direction with a second pitch which falls within a range of 2.2 times the first pitch or more and 3.2 times the first pitch or less.Type: ApplicationFiled: October 13, 2016Publication date: April 13, 2017Applicant: Japan Display Inc.Inventors: Takeyuki TSURUMA, Masaru UCHIYAMA, Michiaki SAKAMOTO, Koji ISHIZAKI
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Patent number: 9541813Abstract: An image display device having improved image retention capability by analyzing the mechanism behind the creation of an unwanted electric field applied to an element after a power supply is turned off, and devising a drive method and so forth for compensating for the same, is provided. Electrophoretic particles contain three types of charged particles, C (cyan), M (magenta), and Y (yellow) that are mutually different in color and threshold voltage for starting electrophoresis. When the threshold voltages of C (cyan), M (magenta) and Y (yellow) are respectively Vth3, Vth2, and Vth3, these satisfy the relationship |Vth3|<|Vth2|<|Vth1|. Further, a voltage application unit applies a voltage (VE) different from a reference potential during the final period of image update period. The voltage (VE) is a compensation voltage that suppresses the movement of charged particles.Type: GrantFiled: January 30, 2012Date of Patent: January 10, 2017Assignee: NLT TECHNOLOGIES, LTD.Inventors: Michiaki Sakamoto, Koji Shigemura
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Publication number: 20160370931Abstract: According to one embodiment, a display device includes a first substrate including a scanning line, a control line, a control electrode, a signal line, a pixel electrode, a first switching element, and a second switching element. The first switching element includes a first semiconductor layer, a first gate electrode, and a first insulating film. The second switching element includes a second semiconductor layer, a second gate electrode, and a second insulating film. The control electrode is overlapped with the second gate electrode.Type: ApplicationFiled: June 16, 2016Publication date: December 22, 2016Applicant: Japan Display Inc.Inventor: Michiaki SAKAMOTO
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Patent number: 9361725Abstract: Provided are an image generation apparatus, three-dimensional image display apparatus, image generation method and non-transitory computer readable medium.Type: GrantFiled: April 19, 2013Date of Patent: June 7, 2016Assignee: NLT TECHNOLOGIES, LTD.Inventors: Di Wu, Michiaki Sakamoto