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公开(公告)号：US20240184130A1
公开(公告)日：2024-06-06
申请号：US18511505
申请日：2023-11-16
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Takanori ARUGA , Hajime AKIMOTO
IPC: G02B30/26
Abstract: An image display device includes: a first display device configured to display a first image; an imaging optical system including: an input element configured to receive light emitted from the first display device, and an output element configured to receive light traveling via the input element and to emit light to form a real image corresponding to the first image; an optical member configured to reflect light emitted from the imaging optical system; and a second display device configured to display a second image. The imaging optical system is substantially telecentric at a real image side. The first display device is configured such that the light emitted from the first display device exhibits a substantially Lambertian light distribution. The imaging optical system and the optical member are configured such that the real image is formed between the imaging optical system and the optical member.
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公开(公告)号：US20240184129A1
公开(公告)日：2024-06-06
申请号：US18526318
申请日：2023-12-01
Applicant: NICHIA CORPORATION
Inventor： Hajime AKIMOTO , Takashi SAKAMOTO , Masae YAMAWAKI
CPC classification number: G02B30/10 , G02B17/006
Abstract: An image display device includes: an imaging element; a light source configured to irradiate light toward the imaging element; a light-shielding member configured to shield a portion of light of at least the light source; and a light-transmitting member configured to transmit light emitted from the imaging element, the light-transmitting member selectively controlling a transmission of light of at least some wavelengths of the light emitted from the imaging element.
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公开(公告)号：US20240184109A1
公开(公告)日：2024-06-06
申请号：US18513895
申请日：2023-11-20
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Takanori ARUGA , Hajime AKIMOTO
CPC classification number: G02B27/0101 , G02B5/3083 , G02B27/0983 , G02B27/283
Abstract: A light source unit includes a display device configured to display an image, a reflective polarizing element on which light emitted from the display device is incident, a reflecting member, and a waveplate. The reflective polarizing element transmits a first polarized light and reflects a second polarized light. The reflecting member reflects, toward the reflective polarizing element, light transmitted by the reflective polarizing element. The waveplate is interposed in a portion of an optical path between the reflective polarizing element and the reflecting member. The optical path is of light emitted from the display device, transmitted by the reflective polarizing element, reflected by the reflecting member, and reflected by the reflective polarizing element. A normal of the waveplate is tilted with respect to a direction of the optical path transmitted by the waveplate partway from the reflective polarizing element toward the reflecting member.
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公开(公告)号：US20240030399A1
公开(公告)日：2024-01-25
申请号：US18473038
申请日：2023-09-22
Applicant: NICHIA CORPORATION
Inventor： Hajime AKIMOTO
CPC classification number: H01L33/62 , H01L33/22 , H01L33/32 , H01L33/505 , H01L25/0753 , H01L25/167 , H01L27/124 , H01L33/0075 , H01L2933/0066 , H01L2933/0016 , H01L2933/0041
Abstract: A method for manufacturing an image display device according to an embodiment includes: preparing a first substrate, the first substrate including a circuit element, a first wiring layer connected to the circuit element, and a first insulating film covering the circuit element and the first wiring layer; forming a conductive layer including a single-crystal metal on the first insulating film; forming a semiconductor layer including a light-emitting layer on the single-crystal metal; forming a light-emitting element including a light-emitting surface by patterning the semiconductor layer; forming a second insulating film covering the first insulating film, the conductive layer, and the light-emitting element; forming a first via extending through the first and second insulating films; forming a second wiring layer on the second insulating film; and removing at least a portion of the conductive layer on the light-emitting surface.
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公开(公告)号：US20230122669A1
公开(公告)日：2023-04-20
申请号：US18067436
申请日：2022-12-16
Applicant: NICHIA CORPORATION
Inventor： Hajime AKIMOTO
Abstract: A production method for an image display device, the method including: preparing at least one structure including a semiconductor layer formed on a first substrate; forming a first metal layer on a second substrate; bonding the semiconductor layer to the first metal layer; removing the first substrate; forming a light-emitting element by etching the semiconductor layer, the light-emitting element including a bottom surface on the first metal layer, and a light-emitting surface located opposite to the bottom surface; forming a first insulating film that covers the second substrate and the light-emitting element; forming a circuit element on the first insulating film; forming a second insulating film that covers the circuit element and the first insulating film; exposing a surface that includes the light-emitting surface by removing portions of the first insulating film and the second insulating film; and forming a wiring layer on the second insulating film.
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Patent Agency Ranking
公开(公告)号：US20200212269A1
公开(公告)日：2020-07-02
申请号：US16726935
申请日：2019-12-26
Applicant: NICHIA CORPORATION
Inventor： Hajime AKIMOTO
Abstract: An image display device includes a plurality of pixels each of which includes a plurality of first subpixels and a second subpixel. The plurality of first subpixels is configured to emit red light, green light, and blue light. The second subpixel is configured to emit blue light. The plurality of pixels includes at least one pixel in which the plurality of first subpixels includes a defective subpixel which is supposed to emit predetermined light with a predetermined color. The second subpixel includes a light-emitting element and a wavelength conversion layer provided over the light-emitting element to convert emission light emitted from the light-emitting element to converted light with the predetermined color if the predetermined color is red or green.
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公开(公告)号：US20200043405A1
公开(公告)日：2020-02-06
申请号：US16525588
申请日：2019-07-30
Applicant: NICHIA CORPORATION
Inventor： Hajime AKIMOTO
IPC: G09G3/32
Abstract: An image display device includes pixel circuits arranged in a matrix configuration between a first power supply line and a second power supply line. Each of the pixel circuits includes a light-emitting element and a first circuit connected to the light-emitting element and configured to set a duration during which a current is supplied to the light-emitting element based on a result of comparing a first signal and a first direct current voltage. The first signal includes a triangular wave signal. The first direct current voltage is set in a prescribed period. At least one of the pixel circuits includes a second circuit connected in series to the first circuit. The second circuit is configured to control a current supplied to the first circuit based on a second direct current voltage set in a period different from the prescribed period.
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公开(公告)号：US20250120235A1
公开(公告)日：2025-04-10
申请号：US18988316
申请日：2024-12-19
Applicant: NICHIA CORPORATION
Inventor： Hajime AKIMOTO
IPC: H10H29/14 , H10H20/01 , H10H20/82 , H10H20/833 , H10H20/851 , H10H20/856 , H10H20/857
Abstract: An image display device includes: a light-transmitting substrate including a first surface; a circuit element located on the first surface; a first wiring layer electrically connected to the circuit element; a first insulating film covering the circuit element and the first wiring layer on the first surface; a conductive layer that comprises a light-reflective part and is located on the first insulating film; a first light-emitting element located on the light-reflective part and electrically connected to the light-reflective part; a second insulating film covering the first insulating film, the conductive layer, and at least a portion of the first light-emitting element; a second wiring layer located on the second insulating film, the second wiring layer being electrically connected to a surface of the first light-emitting element; and a first via extending through the first and second insulating films and electrically connecting the first wiring layer and the second wiring.
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公开(公告)号：US20240391377A1
公开(公告)日：2024-11-28
申请号：US18632012
申请日：2024-04-10
Applicant: Nichia Corporation
Inventor： Hajime AKIMOTO , Yuta HAMAZAKI
Abstract: An automobile includes a vehicle, a light source, a sensor, and a controller. The light source is disposed in the vehicle and configured to emit first light toward a first region of a road surface and emit second light toward a second region that is located directly below the vehicle on the road surface and is different from the first region. The sensor is disposed in the vehicle to detect the second light regularly reflected in the second region. The controller is configured to control the light source to set at least one of an intensity or a spectrum of the first light or an image projected with the first light based on a detection result of the sensor.
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公开(公告)号：US20240210683A1
公开(公告)日：2024-06-27
申请号：US18538112
申请日：2023-12-13
Applicant: NICHIA CORPORATION
Inventor： Takanori ARUGA , Wataru KITAHARA , Hajime AKIMOTO
CPC classification number: G02B27/0101 , G02B5/3083 , G02B27/0977 , G02B2027/0112
Abstract: A light source unit includes: a display device configured to emit light having a substantially Lambertian light distribution and to display an image, the display device including a plurality of pixels arranged in a matrix configuration in a same plane, wherein pixels among the plurality of pixels located at an outermost perimeter are arranged so that straight lines connecting centers of the pixels located at the outermost perimeter do not form a rectangle; and an imaging optical system including: an input element on which light emitted from the display device is incident, and an output element on which light traveling via the input element is incident, light emitted from the output element forming a first image corresponding to the image. The imaging optical system is substantially telecentric at a first image side.
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