公开(公告)号：US20160116667A1

公开(公告)日：2016-04-28

申请号：US14920632

申请日：2015-10-22

Applicant: Japan Display Inc.

Inventor： Yasuhisa SHIRAISHI ,  Tomohisa ONISHI

IPC: 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.

Abstract translation: 本发明可以减少或防止靠近光源的屏幕变黄的现象。 液晶显示装置包括液晶显示面板和背光源。 背光源包括在导光板10的入射面11上沿第一方向排列的导光板10和白色LED21.白色LED21在发光面的第一方向上分别包括中心 由蓝色光谱占据的区域比中部地区相邻处更密集。 在导光板10的入射面11处，与导光板10的厚度方向延伸的入射面突起111形成在与LED21的致密蓝色光谱的区域对应的部分上。

公开(公告)号：US20170227701A1

公开(公告)日：2017-08-10

申请号：US15420648

申请日：2017-01-31

Applicant: Japan Display Inc.

Inventor： Masaki NISHIKAWA ,  Tetsuya OOSHIMA ,  Yasuhisa SHIRAISHI ,  Masateru MORIMOTO

IPC: F21V8/00 ,  G02F1/1335

CPC classification number: G02B6/005 ,  G02B6/00 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0055 ,  G02F1/133528 ,  G02F1/133615 ,  G02F1/133621 ,  G02F2001/133614 ,  G02F2201/501 ,  G02F2202/28 ,  G02F2202/36 ,  G02F2203/03

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.

公开(公告)号：US20140192293A1

公开(公告)日：2014-07-10

申请号：US14147736

申请日：2014-01-06

Applicant: Japan Display Inc.

Inventor： Ken KAGABU ,  Yasuhisa SHIRAISHI ,  Yoshikazu TANABE ,  Yoshihiro NISHIMINE

IPC: 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。

公开(公告)号：US20180120645A1

公开(公告)日：2018-05-03

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.

公开(公告)号：US20170059765A1

公开(公告)日：2017-03-02

申请号：US15245651

申请日：2016-08-24

Applicant: Japan Display Inc.

Inventor： Tetsuya OSHIMA ,  Masaki NISHIKAWA ,  Yasuhisa SHIRAISHI

IPC: F21V8/00

CPC classification number: G02B6/0053 ,  G02B6/00 ,  G02B6/0055 ,  G02B6/0065 ,  G02F1/133504 ,  G02F2001/133507

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.

Abstract translation: 显示装置包括在显示单元和导光板之间的棱镜片。 棱镜片包括在与导光板的光出射表面相对的表面上沿第二方向连续布置的具有恒定顶角的多个棱镜。 棱镜的每条脊线沿第一方向延伸。 每个棱镜具有在来自导光板的光入射的一侧上的第一倾斜面和反射入射光的一侧上的第二倾斜面。 使第一倾斜面的面积比第二倾斜面的面积小，使得棱镜片中的发光区域的面积大于非发光区域的面积。