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公开(公告)号：US20240402487A1
公开(公告)日：2024-12-05
申请号：US18641419
申请日：2024-04-21
Applicant: Kantatsu Co., Ltd , Sharp Display Technology Corporation
Inventor： Ryo Maruyama , Naru Usukura
Abstract: An optical system includes, in order from the pupil plane side to the display plane side, a first reflective polarizing plate, a first lens having a convex surface on the pupil plane side, a half mirror, a second lens having a convex surface on the display plane side, a second reflective polarizing plate, a first ¼ wavelength plate, and a second ¼ wavelength plate. The optical system satisfies: 1 4
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公开(公告)号：US20240345411A1
公开(公告)日：2024-10-17
申请号：US18606127
申请日：2024-03-15
Applicant: Sharp Display Technology Corporation
Inventor： MATTIA SIGNORETTO , David James Montgomery , Peter John Roberts , Naru Usukura , Manabu Daio
CPC classification number: G02B30/25 , G02B27/0172 , G02B27/0955 , G02B27/283
Abstract: The display device of the present invention includes, in the following order toward a viewer: a display panel; a semi-transparent mirror; a lens; a Pancharatnam-Berry lens configured to cause one-handed circularly polarized light incident thereon that is left-handed circularly polarized light or right-handed circularly polarized light to converge while causing opposite-handed circularly polarized light incident thereon to diverge; and a circularly polarized light-selective reflector, a circularly polarized light-selective reflector side surface of the lens having a planar shape.
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公开(公告)号：US20240351441A1
公开(公告)日：2024-10-24
申请号：US18609941
申请日：2024-03-19
Applicant: Sharp Display Technology Corporation
Inventor： Ryuzo YUKI , Naru Usukura , Junichi Masuda , Shugo Yagi
IPC: B60K35/81 , B60K35/65 , G02F1/13357
CPC classification number: B60K35/81 , B60K35/656 , G02F1/133615 , B60K2360/336
Abstract: A liquid crystal display device includes a backlight module configured to switch between first light having a maximum luminance in a first direction and second light having a maximum luminance in a second direction different from the first direction and emit the first light and the second light from a main surface, a liquid crystal display panel, and a control device. The control device receives a first image and generates a first offset image based on the first image, the first offset image being an image obtained by reversing a color of the first image and having a luminance adjusted, controls the liquid crystal display panel such that a first display image including the first image and a second display image including the first offset image are alternately displayed, and controls the backlight module so that the first light is emitted when the first display image is displayed and the second light is emitted when the second display image is displayed. A luminance of the first offset image is substantially equal to a luminance in the second direction when the liquid crystal display panel displays the first display image.
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公开(公告)号：US11852952B2
公开(公告)日：2023-12-26
申请号：US17969839
申请日：2022-10-20
Applicant: Sharp Display Technology Corporation
Inventor： Naru Usukura , Hiroaki Asagi , Yasuhiro Haseba , Kiyoshi Minoura
CPC classification number: G02F1/294 , G06F1/163 , G02C7/083 , G02C7/10 , G02C2202/20 , G02F2201/122 , G02F2201/56
Abstract: Provided is a liquid crystal lens including: a first substrate; a second substrate facing the first substrate; and a liquid crystal layer held between the first substrate and the second substrate and containing liquid crystal molecules. The first substrate includes a Fresnel lens and a first electrode sequentially toward the liquid crystal layer. The second substrate includes a second electrode. The Fresnel lens includes a Fresnel-shaped part including annular lens surfaces in a concentric circle pattern and a flat part including a flat surface that extends in a radial direction of the concentric circle and intersects at least one of the annular lens surfaces. The annular lens surfaces are on a liquid crystal layer-facing surface of the Fresnel-shaped part and defines an uneven surface. The flat surface is on the liquid crystal layer-facing surface of the flat part.
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公开(公告)号：US12174386B2
公开(公告)日：2024-12-24
申请号：US18519376
申请日：2023-11-27
Applicant: Sharp Display Technology Corporation
Inventor： Naru Usukura
Abstract: A display device includes a display panel, a linearly polarizing plate, and a first polarized light-selective reflector disposed sequentially toward a viewer; a first phase difference plate and a first lens disposed closer to the viewer relative to the first polarized light-selective reflector and facing each other; a semi-transparent mirror disposed closer to the viewer relative to the first phase difference plate and the first lens; a second lens and a second phase difference plate disposed closer to the viewer relative to the semi-transparent mirror and facing each other; and a second polarized light-selective reflector disposed closer to the viewer relative to the second lens and the second phase difference plate. The first lens and the second lens have shapes asymmetric about the semi-transparent mirror as a plane of symmetry in a cross-sectional view in a direction from the display panel toward the second polarized light-selective reflector.
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Patent Agency Ranking
公开(公告)号：US12066716B2
公开(公告)日：2024-08-20
申请号：US18126820
申请日：2023-03-27
Applicant: Sharp Display Technology Corporation
Inventor： Naru Usukura , Akiko Itoh , Koji Murata , Keisuke Yoshida
IPC: G02F1/13357 , G02F1/1335 , G02F1/1347 , G06F1/16
CPC classification number: G02F1/13362 , G02F1/133528 , G02F1/1347 , G06F1/1616
Abstract: An electronic device includes a first display panel including a first display surface, and a second display panel including a second display surface and configured to be disposed such that light emitted from the first display surface is incident on the second display surface. The first display panel is configured such that light emitted from the first display surface and incident on the second display surface includes a large amount of P-polarization components. The second display panel is a reflection-type display panel, and includes a polarizer disposed on the second display surface and configured to absorb S-polarization components of incident light.
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公开(公告)号：US12066701B2
公开(公告)日：2024-08-20
申请号：US18228018
申请日：2023-07-31
Applicant: Sharp Display Technology Corporation
Inventor： Chiaki Minari , Naru Usukura , Ryuzo Yuki
IPC: G02F1/133 , G02F1/1334 , G02F1/137
CPC classification number: G02F1/13312 , G02F1/13345 , G02F1/137 , G02F2202/04 , G02F2203/02
Abstract: A display device includes a display panel and a control unit. The display panel includes a first substrate, a light modulation layer configured to switch between transmissive display and non-transmissive display, and a second substrate in this order, and further includes an optical sensor configured to detect a luminance of light incident from a first space located on one main surface side of the display panel and from a second space located on the other main surface side of the display panel. The control unit calculates, based on the luminance, a relationship between brightness of the first space and brightness of the second space as a numerical value and switches display of the light modulation layer based on the numerical value.
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公开(公告)号：US20240168282A1
公开(公告)日：2024-05-23
申请号：US18499185
申请日：2023-10-31
Applicant: Kantatsu Co., Ltd , Sharp Display Technology Corporation
Inventor： Ryo Maruyama , Naru Usukura
CPC classification number: G02B27/0025 , G02B5/3083 , G02B27/0955 , G02B27/0977 , G02B27/283 , G02B27/0172
Abstract: An optical system includes, in order from a pupil surface side to a display surface side, a first reflective polarizing plate, a first lens having a positive refractive power, a half mirror, a second lens having a positive refractive power, and a second reflective polarizing plate. The optical system further includes a first quarter wave plate arranged between a pupil surface and the half mirror, and a second quarter wave plate arranged between the half mirror and a display surface. The second lens has a paraxially convex surface on the pupil surface side. Further, in the case where a paraxial curvature radius of a surface of the first lens on the pupil surface side is r1 and a paraxial curvature radius of a surface of the first lens on the display surface side is r2, the optical system satisfies a conditional expression below: (1) −3.2
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公开(公告)号：US11960166B2
公开(公告)日：2024-04-16
申请号：US18102904
申请日：2023-01-30
Applicant: Sharp Display Technology Corporation
Inventor： Naru Usukura , Masahiro Imai , Yuhichiroh Murakami , Takahiro Yamaguchi , Shige Furuta
IPC: G02F1/1335 , G02F1/13357 , G02F1/1362 , G02F1/1368
CPC classification number: G02F1/133536 , G02F1/133504 , G02F1/133524 , G02F1/133603 , G02F1/136286 , G02F1/1368
Abstract: A display device includes an organic EL element layer, a liquid crystal element layer disposed on top of the organic EL element layer, and a polarizing plate disposed at a side of the liquid crystal element layer that faces an observer. The liquid crystal element layer includes two transparent substrates and a liquid crystal layer disposed between the two transparent substrates. The liquid crystal element layer is configured to be able to, by applying a voltage to the liquid crystal layer, cause a substantially quarter-wavelength retardation in light passing through the liquid crystal layer.
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公开(公告)号：US12276797B2
公开(公告)日：2025-04-15
申请号：US18136272
申请日：2023-04-18
Applicant: Sharp Display Technology Corporation
Inventor： Naru Usukura
IPC: G02B27/01 , G02B5/30 , G02F1/1335 , G02F1/13363 , H10K59/80
Abstract: Provided is a display device having a thin profile and a high light use efficiency and a head-mounted display including the display device. The display device includes a display panel; a circular polarizer configured to convert display light from the display panel into circularly polarized light and to transmit the circularly polarized light; a patterning mirror including light transmitters and a light reflector, the light transmitters being configured to transmit the circularly polarized light and the light reflector being provided on a surface opposite to a surface facing the circular polarizer; a lens configured to transmit the circularly polarized light transmitted through the patterning mirror; and a circularly polarized light selective reflector configured to selectively reflect the circularly polarized light transmitted through the lens.
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