Patents by Inventor Yoshifumi Sekiguchi
Yoshifumi Sekiguchi 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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Publication number: 20200203120Abstract: A charged particle beam device includes a scintillator and a light guide. The light guide has an incident surface configured to incident a light from the scintillator, an emission surface configured to emit a light incident from the incident surface, and a first surface configured to guide the light incident from the incident surface to a side of the emission surface. The light guide has a bent portion. The bent portion has a second surface configured to guide the light to the side of the emission surface in regions excluding a region between the incident surface and the emission surface.Type: ApplicationFiled: January 24, 2020Publication date: June 25, 2020Inventors: Yoshifumi SEKIGUCHI, Shin IMAMURA, Hajime KAWANO, Shahedul HOQUE
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Patent number: 10679821Abstract: A charged particle beam device includes a scintillator and a light guide. The light guide has an incident surface configured to incident a light from the scintillator, an emission surface configured to emit a light incident from the incident surface, and a first surface configured to guide the light incident from the incident surface to a side of the emission surface. The light guide has a bent portion. The bent portion has a second surface configured to guide the light to the side of the emission surface in regions excluding a region between the incident surface and the emission surface.Type: GrantFiled: January 24, 2020Date of Patent: June 9, 2020Assignee: Hitachi High-Tech CorporationInventors: Yoshifumi Sekiguchi, Shin Imamura, Hajime Kawano, Shahedul Hoque
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Patent number: 10641607Abstract: A height detection apparatus is configured to project a pattern on a sample arranged at any of a plurality of reference positions and configured to detect a height of the sample. The apparatus includes: a projection optical system that generates a plurality of spatially separated light beams each having the pattern and projects the generated spatially separated light beams onto the sample; an imaging element that images the pattern reflected from the sample; a detection optical system that guides the pattern reflected from the sample to the imaging element; and at least one optical path length correction member disposed on an optical path different from an optical path having a shortest optical path length among a plurality of optical paths corresponding to the plurality of light beams at a position where the plurality of light beams is spatially separated.Type: GrantFiled: April 9, 2019Date of Patent: May 5, 2020Assignee: Hitachi High-Technologies CorporationInventors: Yoshifumi Sekiguchi, Naoya Nakai, Koichi Taniguchi, Makoto Suzuki
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Publication number: 20200133055Abstract: A color display device comprises an array of a plurality of sub-pixels including a red sub-pixel, a blue sub-pixel, a first green sub-pixel and a second green sub-pixel. The first green sub-pixel and the second green sub-pixel are smaller than that of the red sub-pixel or the blue sub-pixel. The two adjacent first green sub-pixels are arranged in a first direction, the two adjacent second green sub-pixels are arranged in the first direction. The blue sub-pixel is directly adjacent to the red sub-pixel in a second direction; the blue sub-pixel is directly adjacent to the two first green sub-pixels and the two second green sub-pixels.Type: ApplicationFiled: December 26, 2019Publication date: April 30, 2020Inventors: Shoichi HIROTA, Shinichi KOMURA, Yoshifumi SEKIGUCHI, Tsunenori YAMAMOTO, Masaya ADACHI
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Patent number: 10593512Abstract: The present invention provides a light guide capable of guiding light generated by a scintillator at high efficiency to a photoreceiving element, a detector, and a charged particle beam device. For attaining the purpose, the present invention proposes a light guide that guides light generated by a scintillator to a photoreceiving element, provided with a scintillator containment portion formed of a first surface facing a surface opposite to a charged particle incident surface of the scintillator and a second surface facing a surface different from the surface opposite to the charged particle incident surface of the scintillator, and a tilted surface reflecting light incident from the second surface to the inside of the light guide.Type: GrantFiled: February 3, 2017Date of Patent: March 17, 2020Assignee: Hitachi High-Technologies CorporationInventors: Yoshifumi Sekiguchi, Shin Imamura, Hajime Kawano, Shahedul Hoque
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Patent number: 10566503Abstract: The purpose of the present invention is to decrease the process temperature for a multilayer glass into which an optical element is to be packed, thereby reducing the damage to the optical element during processing. A multilayer glass according to the present invention is so configured that a gap formed between glass plates is sealed with a sealing material that can fix at a process temperature lower than a temperature employed for the processing of an optical element (see FIG. 1).Type: GrantFiled: March 14, 2016Date of Patent: February 18, 2020Assignee: HITACHI, LTD.Inventors: Hiroki Kaneko, Takashi Naito, Yoshifumi Sekiguchi, Tatsuya Miyake
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Patent number: 10551664Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: GrantFiled: March 9, 2017Date of Patent: February 4, 2020Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
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Publication number: 20190323835Abstract: A height detection apparatus is configured to project a pattern on a sample arranged at any of a plurality of reference positions and configured to detect a height of the sample. The apparatus includes: a projection optical system that generates a plurality of spatially separated light beams each having the pattern and projects the generated spatially separated light beams onto the sample; an imaging element that images the pattern reflected from the sample; a detection optical system that guides the pattern reflected from the sample to the imaging element; and at least one optical path length correction member disposed on an optical path different from an optical path having a shortest optical path length among a plurality of optical paths corresponding to the plurality of light beams at a position where the plurality of light beams is spatially separated.Type: ApplicationFiled: April 9, 2019Publication date: October 24, 2019Inventors: Yoshifumi SEKIGUCHI, Naoya NAKAI, Koichi TANIGUCHI, Makoto SUZUKI
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Publication number: 20190115186Abstract: The present invention provides a light guide capable of guiding light generated by a scintillator at high efficiency to a photoreceiving element, a detector, and a charged particle beam device. For attaining the purpose, the present invention proposes a light guide that guides light generated by a scintillator to a photoreceiving element, provided with a scintillator containment portion formed of a first surface facing a surface opposite to a charged particle incident surface of the scintillator and a second surface facing a surface different from the surface opposite to the charged particle incident surface of the scintillator, and a tilted surface reflecting light incident from the second surface to the inside of the light guide.Type: ApplicationFiled: February 3, 2017Publication date: April 18, 2019Applicant: Hitachi High-Technologies CorporationInventors: Yoshifumi SEKIGUCHI, Shin IMAMURA, Hajime KAWANO, Shahedul HOQUE
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Publication number: 20180294386Abstract: The purpose of the present invention is to decrease the process temperature for a multilayer glass into which an optical element is to be packed, thereby reducing the damage to the optical element during processing. A multilayer glass according to the present invention is so configured that a gap formed between glass plates is sealed with a sealing material that can fix at a process temperature lower than a temperature employed for the processing of an optical element (see FIG. 1).Type: ApplicationFiled: March 14, 2016Publication date: October 11, 2018Applicant: HITACHI, LTD.Inventors: Hiroki KANEKO, Takashi NAITO, Yoshifumi SEKIGUCHI, Tatsuya MIYAKE
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Publication number: 20170178577Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: ApplicationFiled: March 9, 2017Publication date: June 22, 2017Inventors: Shoichi HIROTA, Shinichi KOMURA, Yoshifumi SEKIGUCHI, Tsunenori YAMAMOTO, Masaya ADACHI
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Patent number: 9626918Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: GrantFiled: October 20, 2014Date of Patent: April 18, 2017Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
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Publication number: 20150035738Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: ApplicationFiled: October 20, 2014Publication date: February 5, 2015Inventors: Shoichi HIROTA, Shinichi KOMURA, Yoshifumi SEKIGUCHI, Tsunenori YAMAMOTO, Masaya ADACHI
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Patent number: 8891044Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: GrantFiled: October 10, 2007Date of Patent: November 18, 2014Assignees: Japan Display Inc., Panasonic Liquid Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
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Patent number: 8780298Abstract: A liquid crystal display device includes: a light guide plate having an emission surface emitting light to a liquid crystal panel and a plurality of side surfaces; and a plurality of light sources LEDPKG inputting light to the light guide plate from at least one side surface. The light guide plate is divided into a plurality of parts extending from the light inputted one side surface to an opposite side surface and the plurality of parts include at least one first part and at least one second part. The first part and the second part are adjacent to each other, and two-dimensionally overlap with the display area, respectively. At least the second part has a shape for emitting the light from an emission surface, and a sectional shape in the extending direction of the first part is greater than that of the second part.Type: GrantFiled: January 20, 2011Date of Patent: July 15, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshifumi Sekiguchi, Ikuo Hiyama
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Patent number: 8659718Abstract: Provided is a liquid crystal display device (1) with increased light use efficiency and thin frame on the side on which the light emitting diode is disposed, including: a liquid crystal panel (3); a backlight unit (5) including a light guide plate (12) and light emitting diodes being disposed side by side in a longitudinal direction of an incident surface; an intermediate frame (9), which includes a plurality of protruding portions that protrude to an exiting surface side of the light guide plate (12); and an end portion reflection sheet (14), which is disposed on an exiting surface side of the intermediate frame (9) and adjacent to the plurality of protruding portions, extends in an array direction of the light emitting diodes, and includes tongue-shaped portions each extending between adjacent ones of the plurality of protruding portions.Type: GrantFiled: December 21, 2011Date of Patent: February 25, 2014Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshifumi Sekiguchi, Naoki Sato, Naoki Iwasaki, Takaaki Kitada
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Patent number: 8421957Abstract: A liquid crystal display device includes a liquid crystal panel and an illuminating device having a plurality of LED packages which include LED's and a lens. Each LED package includes a high refractive index member containing a substance having a larger refractive index than that of a material forming the lens and which seals the LED. The lens is shaped to have a recess near its center, and is shaped so that a moving radius increases as a polar angle increases within a range of 0 to 80 degrees. The moving radius is defined as a distance starting from the lens center and ending in the lens surface, and the polar angle is defined as an angle that is made by the moving radius to the center axis that is vertical to a plane on which said LED package is located and passing through the center of the lens.Type: GrantFiled: July 13, 2011Date of Patent: April 16, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshifumi Sekiguchi, Ikuo Hiyama, Tsunenori Yamamoto, Hiroki Kaneko, Toshiaki Tanaka
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Patent number: 8384845Abstract: The side surface of the light guide plate includes an incident surface which faces the light source unit in an opposed manner, and a fixing surface which is directed in the left-and-right direction orthogonal to the top-and-bottom direction which is the direction along which the light source unit and the incident surface each other in an opposed manner. An engaging portion which is engageable with a lower frame is formed on the fixing surface or an edge portion which forms the fixing surface. The engaging portion is configured to allow a change of a distance between the incident surface and the lower frame due to expansion or shrinkage of the light guide plate while restricting the movement of the light guide plate in the top-and-bottom direction.Type: GrantFiled: January 24, 2011Date of Patent: February 26, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshifumi Sekiguchi, Yoshiro Mikami, Ikuo Hiyama, Naoki Iwasaki, Masaki Tsubokura
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Publication number: 20120162569Abstract: Provided is a liquid crystal display device (1) with increased light use efficiency and thin frame on the side on which the light emitting diode is disposed, including: a liquid crystal panel (3); a backlight unit (5) including a light guide plate (12) and light emitting diodes being disposed side by side in a longitudinal direction of an incident surface; an intermediate frame (9), which includes a plurality of protruding portions that protrude to an exiting surface side of the light guide plate (12); and an end portion reflection sheet (14), which is disposed on an exiting surface side of the intermediate frame (9) and adjacent to the plurality of protruding portions, extends in an array direction of the light emitting diodes, and includes tongue-shaped portions each extending between adjacent ones of the plurality of protruding portions.Type: ApplicationFiled: December 21, 2011Publication date: June 28, 2012Applicant: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshifumi SEKIGUCHI, Naoki SATO, Naoki IWASAKI, Takaaki KITADA
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Patent number: 8194203Abstract: A liquid crystal display device is provided with a backlight where there is little inconsistency in the temperature in the fluorescent lamps and which can illuminate the liquid crystal panel well even when the structure is thin.Type: GrantFiled: February 19, 2009Date of Patent: June 5, 2012Assignees: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.Inventors: Yoshifumi Sekiguchi, Naoki Iwasaki, Yoshihiro Imajo