Patents by Inventor Yudai Numata
Yudai Numata 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: 20240151886Abstract: An optical filter is configured to have a regular transmittance of 60% or higher for light having a wavelength of 950 nm. The optical filter is also configured to be contracted by being heated at a temperature of 85° C. or higher, or a size change of the optical filter occurs from room temperature to 300° C. as monotonous increase in a tensile mode of a thermomechanical analyzer (TMA).Type: ApplicationFiled: January 19, 2024Publication date: May 9, 2024Applicant: NITTO DENKO CORPORATIONInventors: Yudai NUMATA, Masato KATSUDA, Shoichi MATSUDA
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Publication number: 20240118568Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.Type: ApplicationFiled: December 19, 2023Publication date: April 11, 2024Applicant: Japan Display Inc.Inventors: Yudai NUMATA, Kentaro OKUYAMA
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Patent number: 11914177Abstract: Disclosed is an optical filter with L* measured by the SCE method being 20 or greater, wherein: the linear transmittance with respect to light with wavelengths being at least a portion of a wavelength range from 760 nm to 2000 nm is 60% or greater; and, before and after a light resistance test wherein light of a xenon arc lamp (average integrated illuminance of light with wavelengths from 300 nm to 400 nm:120 W/m2) is shone for 300 hours, the absolute value of a change in C* measured by the SCE method using a spectroscopic colorimeter is 6 or less.Type: GrantFiled: March 15, 2021Date of Patent: February 27, 2024Assignee: NITTO DENKO CORPORATIONInventors: Masato Katsuda, Yudai Numata, Shoichi Matsuda
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Patent number: 11914176Abstract: This optical filter 10 has an L* of at least 20 as measured by the SCE method, wherein the linear transmittance is at least 60% with respect to light the wavelength of which falls at least partially within the wavelength range of 760 nm-2,000 nm, and the temperature, at which the optical filter contracts by being heated, is at least 85° C.Type: GrantFiled: March 15, 2021Date of Patent: February 27, 2024Assignee: NITTO DENKO CORPORATIONInventors: Yudai Numata, Masato Katsuda, Shoichi Matsuda
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Patent number: 11914180Abstract: An optical filter has a back-scattering property. The linear transmittance thereof to light of at least some avelengths in the wavelength range of 760-2000 nm is 60% or higher. The azimuth is 20° from an incidence plane when the polar angle of the direction of incidence of incident light is 0°. The value of a bidirectional reflectance distribution function in the direction ‘here the polar angle is ?60’ is BRDF (0°; 20°, ?60°). The azimuth is 20° from an incidence plane when the polar angle of the direction of incidence of incident light is 30°. The value of a bidirectional reflectance distribution function in the direction where the polar angle is ?60° is BRDF (30°; 20°, ?60°). The azimuth is 20° from an incidence plane when the polar angle of the direction of incidence of incident light is 60°.Type: GrantFiled: March 15, 2021Date of Patent: February 27, 2024Assignee: NITTO DENKO CORPORATIONInventors: Yudai Numata, Masato Katsuda, Shoichi Matsuda
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Patent number: 11892722Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.Type: GrantFiled: March 8, 2023Date of Patent: February 6, 2024Assignee: Japan Display Inc.Inventors: Yudai Numata, Kentaro Okuyama
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Publication number: 20240019622Abstract: According to one embodiment, a display device includes a first transparent substrate, a second transparent substrate, a liquid crystal layer, light-emitting elements disposed in a first direction, a third transparent substrate including a main surface and a side surface opposed to the light-emitting elements, and a transparent layer disposed on the main surface and having a lower refractive index than the third transparent substrate. The third transparent substrate is bonded to the first transparent substrate or the second transparent substrate with the transparent layer sandwiched in between. The transparent layer includes strip portions disposed in the first direction and extended along a second direction.Type: ApplicationFiled: July 26, 2023Publication date: January 18, 2024Applicant: Japan Display Inc.Inventors: Yudai NUMATA, Kentaro OKUYAMA
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Publication number: 20230314865Abstract: According to one embodiment, a display device includes a display panel including a first substrate including a first transparent substrate having a first main surface, a first opposite and a side surface, a second substrate including a second transparent substrate having a second main surface and a second opposite surface, and a liquid crystal layer located between the first substrate and the second substrate, a light emitting element opposed to the side surface, a third transparent substrate, and a transparent layer located between the display panel and the third transparent substrate and having a second refractive index that is lower than a first refractive index.Type: ApplicationFiled: June 8, 2023Publication date: October 5, 2023Applicant: Japan Display Inc.Inventor: Yudai NUMATA
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Publication number: 20230305220Abstract: According to one embodiment, a display device includes a first transparent substrate including a first main surface, a second transparent substrate including a first end portion, a liquid crystal layer containing strip-shaped polymers and liquid crystal molecules, a third transparent substrate including a second end portion and a second main surface, a first light-emitting element and a first light guide. The first light guide includes a first surface and a second surface. A height from the first main surface to the second surface is less than a height from the first main surface to the second main surface.Type: ApplicationFiled: June 5, 2023Publication date: September 28, 2023Applicant: Japan Display Inc.Inventors: Yudai NUMATA, Kentaro OKUYAMA
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Patent number: 11754899Abstract: According to one embodiment, a display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first insulating substrate, a scanning line, a signal line, a switching, and a pixel electrode. The liquid crystal layer includes a polymer in a shape of a streak and a liquid crystal molecule. The scanning line includes a conductive layer located between the first insulating substrate and the liquid crystal layer, and a first reflective layer located between the first insulating substrate and the conductive layer and having a reflectance higher than a reflectance of the conductive layer.Type: GrantFiled: January 23, 2023Date of Patent: September 12, 2023Assignee: Japan Display Inc.Inventors: Kentaro Okuyama, Yudai Numata
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Patent number: 11747544Abstract: According to one embodiment, a display device includes a first transparent substrate, a second transparent substrate, a liquid crystal layer, light-emitting elements disposed in a first direction, a third transparent substrate including a main surface and a side surface opposed to the light-emitting elements, and a transparent layer disposed on the main surface and having a lower refractive index than the third transparent substrate. The third transparent substrate is bonded to the first transparent substrate or the second transparent substrate with the transparent layer sandwiched in between. The transparent layer includes strip portions disposed in the first direction and extended along a second direction.Type: GrantFiled: December 1, 2022Date of Patent: September 5, 2023Assignee: Japan Display Inc.Inventors: Yudai Numata, Kentaro Okuyama
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Patent number: 11719877Abstract: According to one embodiment, a display device includes a first transparent substrate including a first main surface, a second transparent substrate including a first end portion, a liquid crystal layer containing strip-shaped polymers and liquid crystal molecules, a third transparent substrate including a second end portion and a second main surface, a first light-emitting element and a first light guide. The first light guide includes a first surface and a second surface. A height from the first main surface to the second surface is less than a height from the first main surface to the second main surface.Type: GrantFiled: August 10, 2022Date of Patent: August 8, 2023Assignee: Japan Display Inc.Inventors: Yudai Numata, Kentaro Okuyama
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Patent number: 11714311Abstract: According to one embodiment, a display device includes a display panel including a first substrate including a first transparent substrate having a first main surface, a first opposite and a side surface, a second substrate including a second transparent substrate having a second main surface and a second opposite surface, and a liquid crystal layer located between the first substrate and the second substrate, a light emitting element opposed to the side surface, a third transparent substrate, and a transparent layer located between the display panel and the third transparent substrate and having a second refractive index that is lower than a first refractive index.Type: GrantFiled: December 2, 2022Date of Patent: August 1, 2023Assignee: Japan Display Inc.Inventor: Yudai Numata
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Publication number: 20230221593Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.Type: ApplicationFiled: March 8, 2023Publication date: July 13, 2023Applicant: Japan Display Inc.Inventors: Yudai NUMATA, Kentaro OKUYAMA
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Patent number: 11668867Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate and including an end portion, a liquid crystal layer provided between the first substrate and the second substrate and including a polymer in a shape of a streak and a liquid crystal molecule, a light-emitting element having a light emitting portion opposed to the end portion, and a light guide located between the end portion and the light emitting portion.Type: GrantFiled: April 18, 2022Date of Patent: June 6, 2023Assignee: Japan Display Inc.Inventors: Kentaro Okuyama, Yudai Numata
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Publication number: 20230152645Abstract: According to one embodiment, a display device includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first insulating substrate, a scanning line, a signal line, a switching, and a pixel electrode. The liquid crystal layer includes a polymer in a shape of a streak and a liquid crystal molecule. The scanning line includes a conductive layer located between the first insulating substrate and the liquid crystal layer, and a first reflective layer located between the first insulating substrate and the conductive layer and having a reflectance higher than a reflectance of the conductive layer.Type: ApplicationFiled: January 23, 2023Publication date: May 18, 2023Applicant: Japan Display Inc.Inventors: Kentaro OKUYAMA, Yudai NUMATA
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Publication number: 20230129841Abstract: An optical filter (10) comprises a matrix (12) and fine particles (14) dispersed in the matrix (12), wherein the fine particles (14) have a parameter Ds of 8.0 to 30 inclusive, Ds being determined by a USAXS pattern and given by Ds=?/(B·cos ?·Ra), where ? is the X-ray wavelength, ? is one half the scattering angle 2?(rad) providing a scattering intensity peak, B is the half width (FWHM, rad) of the peak, and Ra is the average particle size of the fine particles (14).Type: ApplicationFiled: March 15, 2021Publication date: April 27, 2023Applicant: NITTO DENKO CORPORATIONInventors: Tomoya MATSUDA, Yudai NUMATA, Masato KATSUDA, Shoichi MATSUDA
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Publication number: 20230117522Abstract: This optical filter 10 has an L* of at least 20 as measured by the SCE method, wherein the linear transmittance is at least 60% with respect to light the wavelength of which falls at least partially within the wavelength range of 760 nm-2,000 nm, and the temperature, at which the optical filter contracts by being heated, is at least 85° C.Type: ApplicationFiled: March 15, 2021Publication date: April 20, 2023Applicant: NITTO DENKO CORPORATIONInventors: Yudai NUMATA, Masato KATSUDA, Shoichi MATSUDA
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Publication number: 20230119681Abstract: Disclosed is an optical filter with L* measured by the SCE method being 20 or greater, wherein: the linear transmittance with respect to light with wavelengths being at least a portion of a wavelength range from 760 nm to 2000 nm is 60% or greater; and, before and after a light resistance test wherein light of a xenon arc lamp (average integrated illuminance of light with wavelengths from 300 nm to 400 nm:120 W/m2) is shone for 300 hours, the absolute value of a change in C* measured by the SCE method using a spectroscopic colorimeter is 6 or less.Type: ApplicationFiled: March 15, 2021Publication date: April 20, 2023Applicant: NITTO DENKO CORPORATIONInventors: Masato KATSUDA, Yudai NUMATA, Shoichi MATSUDA
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Publication number: 20230116255Abstract: This optical filter has a back-scattering property, and the linear transmittance thereof to light of at least some wavelengths in the wavelength range of 760-2000 nm is 60% or higher.Type: ApplicationFiled: March 15, 2021Publication date: April 13, 2023Applicant: NITTO DENKO CORPORATIONInventors: Yudai NUMATA, Masato KATSUDA, Shoichi MATSUDA