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公开(公告)号：US10324249B2
公开(公告)日：2019-06-18
申请号：US15245651
申请日：2016-08-24
Applicant: Japan Display Inc.
Inventor： Tetsuya Oshima , Masaki Nishikawa , Yasuhisa Shiraishi
IPC: F21V8/00 , G02B6/00 , G02F1/1335
Abstract: A display device includes a prism sheet between a display cell and a light guiding plate. The prism sheet includes a plurality of prisms having a constant apex angle continuously arranged in a second direction on a surface thereof opposed to a light-exiting surface of the light guiding plate. Each of ridge lines of the prisms extends in a first direction. Each prism has a first inclined face on a side on which light from the light guiding plate is incident and a second inclined face on a side reflecting the incident light. An area of the first inclined face is made smaller than an area of the second inclined face, and an area of a light-emitting region in the prism sheet is made larger than an area of a non-light-emitting region.
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2.发明授权Display device, electronic apparatus, and method for driving display device 有权用于驱动显示装置的显示装置，电子设备和方法公开(公告)号：US09520094B2
公开(公告)日：2016-12-13
申请号：US14519755
申请日：2014-10-21
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Naoyuki Takasaki , Susumu Kimura , Yasuhisa Shiraishi
CPC classification number: G09G3/3607 , G09G3/3413
Abstract: According to an aspect, a display device includes: an image display panel; and a planar light source including a light guide plate and an edge-lit light source, the light guide plate illuminating the image display panel from a back side, the edge-lit light source including a plurality of light sources arranged facing a plane of incidence; and a controller that controls luminance of each of the light sources independently. The controller stores therein, as lookup tables for the respective light sources, information on light intensity distributions of light that is incident on the light guide plate from the respective light sources and is emitted to a plane of the image display panel from the light guide plate, and controls a light quantity of each of the light sources based on information on an input signal of an image, and on the lookup tables.
Abstract translation: 根据一方面，一种显示装置包括：图像显示面板; 以及包括导光板和边缘照明光源的平面光源，所述导光板从背面照射所述图像显示面板，所述边缘照明光源包括面向入射平面布置的多个光源 ; 以及独立地控制各个光源的亮度的控制器。 控制器作为各个光源的查找表存储有关于从各个光源入射到导光板上的光的光强度分布的信息，并从导光板发射到图像显示面板的平面 并且基于关于图像的输入信号的信息以及查找表来控制每个光源的光量。
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公开(公告)号：US08749731B2
公开(公告)日：2014-06-10
申请号：US13899765
申请日：2013-05-22
Inventor： Tetsuya Oshima , Hirotaka Imayama , Yasuhisa Shiraishi , Yoshiharu Nagae
IPC: G02F1/13357 , F21V8/00
CPC classification number: G02F1/133606 , G02B6/0038 , G02B6/0053 , G02F1/133615
Abstract: A lighting device including a light source, a light guide plate, a first prism sheet which is arranged over the light guide plate, and a second prism sheet which is arranged between the first prism sheet and the light guide plate. The first prism sheet includes first prisms which are formed parallel to each other in the first direction on a first surface which is opposite to the second prism sheet, and the second prism sheet includes second prisms.
Abstract translation: 一种照明装置，包括光源，导光板，布置在导光板上的第一棱镜片和布置在第一棱镜片和导光板之间的第二棱镜片。 第一棱镜片包括在与第二棱镜片相对的第一表面上沿第一方向彼此平行地形成的第一棱镜，并且第二棱镜片包括第二棱镜。
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公开(公告)号：US09194994B2
公开(公告)日：2015-11-24
申请号：US14147736
申请日：2014-01-06
Applicant: Japan Display Inc.
Inventor： Ken Kagabu , Yasuhisa Shiraishi , Yoshikazu Tanabe , Yoshihiro Nishimine
IPC: G02F1/1335 , F21V8/00
CPC classification number: G02B6/0038 , G02B6/0016 , G02B6/0043 , G02B6/0055
Abstract: A liquid crystal display device includes: a light guide plate including a front surface, a back surface and an edge surface, the light guide plate being arranged such that the edge surface faces a light source, the light guide plate internally reflecting light incident from the edge surface and causing surface emission from the front surface; a liquid crystal display panel; and a reflective sheet arranged so as to face the back surface of the light guide plate. The back surface includes a first portion and a second portion. A surface of the second portion is located at a position recessed relatively from a surface of the first portion. The surface of the first portion is a rough surface. The surface of the second portion is a smooth surface. The reflective sheet is in contact with the first portion but avoids contact with the second portion.
Abstract translation: 一种液晶显示装置，包括：导光板，其具有前表面，后表面和边缘表面，所述导光板被配置为使得所述边缘表面面对光源，所述导光板内部反射从所述导光板入射的光 边缘表面并引起来自表面的表面发射; 液晶显示面板; 以及布置成面对导光板的后表面的反射片。 后表面包括第一部分和第二部分。 第二部分的表面位于相对于第一部分的表面凹陷的位置处。 第一部分的表面是粗糙的表面。 第二部分的表面是光滑的表面。 反射片与第一部分接触，但避免与第二部分接触。
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Patent Agency Ranking
公开(公告)号：US10088624B2
公开(公告)日：2018-10-02
申请号：US15420648
申请日：2017-01-31
Applicant: Japan Display Inc.
Inventor： Masaki Nishikawa , Tetsuya Ooshima , Yasuhisa Shiraishi , Masateru Morimoto
IPC: G02F1/1335 , F21V8/00
Abstract: To provide a thin liquid crystal display device featuring excellent color reproducibility. The liquid crystal display panel includes: a liquid crystal display panel outputting different colors on a per-pixel basis; and a backlight. The backlight includes: a light source; a light guide; a reflective sheet on a back side of the light guide; and a group of optical sheets including a wavelength converter and disposed between the liquid crystal display panel and the light guide. The wavelength converter has a structure where quantum dots are dispersed in a transparent medium. The wavelength converter is bonded to another optical medium by means of a diffusing adhesive. Nanoparticles for developing Rayleigh scattering are dispersed in the wavelength converter.
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公开(公告)号：US10578922B2
公开(公告)日：2020-03-03
申请号：US15854069
申请日：2017-12-26
Applicant: Japan Display Inc.
Inventor： Yasuhisa Shiraishi , Tomohisa Onishi
IPC: G02F1/1335 , F21V8/00
Abstract: This invention reduces or prevents a phenomenon where a screen close to a light source becomes yellowed. A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate 10 and white LEDs 21 arrayed in a first direction on a plane of incidence 11 of the light guide plate 10. The white LEDs 21 each includes, in the first direction on a light-emitting surface, a central area occupied by a blue spectrum more densely than at adjacent sides of the central area. Incident plane protrusions 111, each extending in a thickness direction of the light guide plate 10, are formed on a section corresponding to the area having the dense blue spectrum of each LED 21, at the plane of incidence 11 of the light guide plate 10.
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公开(公告)号：US09885913B2
公开(公告)日：2018-02-06
申请号：US14920632
申请日：2015-10-22
Applicant: Japan Display Inc.
Inventor： Yasuhisa Shiraishi , Tomohisa Onishi
IPC: G02F1/1335 , F21V8/00
CPC classification number: G02F1/133615 , G02B6/0016 , G02B6/0038 , G02B6/0068 , G02B6/0073 , G02F1/133606
Abstract: This invention reduces or prevents a phenomenon where a screen close to a light source becomes yellowed. A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate 10 and white LEDs 21 arrayed in a first direction on a plane of incidence 11 of the light guide plate 10. The white LEDs 21 each includes, in the first direction on a light-emitting surface, a central area occupied by a blue spectrum more densely than at adjacent sides of the central area. Incident plane protrusions 111, each extending in a thickness direction of the light guide plate 10, are formed on a section corresponding to the area having the dense blue spectrum of each LED 21, at the plane of incidence 11 of the light guide plate 10.
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8.发明申请公开(公告)号：US20150109351A1
公开(公告)日：2015-04-23
申请号：US14519755
申请日：2014-10-21
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Naoyuki Takasaki , Susumu Kimura , Yasuhisa Shiraishi
CPC classification number: G09G3/3607 , G09G3/3413
Abstract: According to an aspect, a display device includes: an image display panel; and a planar light source including a light guide plate and an edge-lit light source, the light guide plate illuminating the image display panel from a back side, the edge-lit light source including a plurality of light sources arranged facing a plane of incidence; and a controller that controls luminance of each of the light sources independently. The controller stores therein, as lookup tables for the respective light sources, information on light intensity distributions of light that is incident on the light guide plate from the respective light sources and is emitted to a plane of the image display panel from the light guide plate, and controls a light quantity of each of the light sources based on information on an input signal of an image, and on the lookup tables.
Abstract translation: 根据一方面，一种显示装置包括：图像显示面板; 以及包括导光板和边缘照明光源的平面光源，所述导光板从背面照射所述图像显示面板，所述边缘照明光源包括面向入射平面布置的多个光源 ; 以及独立地控制各个光源的亮度的控制器。 控制器作为各个光源的查找表存储有关于从各个光源入射到导光板上的光的光强度分布的信息，并从导光板发射到图像显示面板的平面 并且基于关于图像的输入信号的信息以及查找表来控制每个光源的光量。
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公开(公告)号：US20130265512A1
公开(公告)日：2013-10-10
申请号：US13899765
申请日：2013-05-22
Inventor： Tetsuya Oshima , Hirotaka Imayama , Yasuhisa Shiraishi , Yoshiharu Nagae
IPC: G02F1/1335
CPC classification number: G02F1/133606 , G02B6/0038 , G02B6/0053 , G02F1/133615
Abstract: A lighting device including a light source, a light guide plate, a first prism sheet which is arranged over the light guide plate, and a second prism sheet which is arranged between the first prism sheet and the light guide plate. The first prism sheet includes first prisms which are formed parallel to each other in the first direction on a first surface which is opposite to the second prism sheet, and the second prism sheet includes second prisms.
Abstract translation: 一种照明装置，包括光源，导光板，布置在导光板上的第一棱镜片和布置在第一棱镜片和导光板之间的第二棱镜片。 第一棱镜片包括在与第二棱镜片相对的第一表面上沿第一方向彼此平行地形成的第一棱镜，并且第二棱镜片包括第二棱镜。
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