公开(公告)号：US09995965B2

公开(公告)日：2018-06-12

申请号：US14982912

申请日：2015-12-29

Applicant: Japan Display Inc.

Inventor： Masaki Nishikawa ,  Tetsuya Ooshima

IPC: G02F1/1343 ,  G02F1/13363

CPC classification number: G02F1/13363 ,  G02F1/134309 ,  G02F2001/134372 ,  G02F2413/08

Abstract: In an FFS liquid crystal display device, viewing angle characteristics are further improved. In an FFS liquid crystal display device, the alignment axis of a first alignment film of a first substrate and the alignment axis of a second alignment film of a second substrate are directed in the same direction. At least two of an upper polarizer, a lower polarizer, or a retardation plate 160 satisfy conditions below. (1) The absorption axis of the upper polarizer forms an angle of one to 45 degrees inclusive with the alignment axis. (2) The absorption axis of the lower polarizer forms an angle of 91 to 135 degrees inclusive or forms an angle of 45 to 89 degrees inclusive with the alignment axis. (3) The extension axis of the retardation plate 160 forms an angle of one to 45 degrees inclusive with the alignment axis.

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.

公开(公告)号：US11126002B2

公开(公告)日：2021-09-21

申请号：US17054761

申请日：2019-03-22

Applicant: Tomoegawa Co., Ltd. ,  Japan Display Inc.

Inventor： Tsubasa Sakano ,  Masahide Sugiyama ,  Tetsuya Ooshima ,  Ryotaro Kogure ,  Yukihiro Nakamura

IPC: G02B27/01 ,  G02F1/1335

Abstract: This head-mounted display is provided with, closer to the viewing side than a color filter having a black matrix between pixels in a liquid crystal display panel (160), an anisotropic optical film (150), the linear transmittance of which changes according to the angle of incident light, wherein the anisotropic optical film (150) includes a single-layered or multilayered anisotropic light diffusion layer, on at least on one surface of the anisotropic light diffusion layer, surface asperities having an arithmetic average roughness Ra of 0.10 μm or less, which is measured in accordance with JIS B0601-2001, are formed, the anisotropic light diffusion layer has a matrix region and a plurality of pillar regions having a refractive index different from that of the matrix region, and the visibility of the black matrix is lowered by the anisotropic optical film (150), thereby making it possible to obtain a higher sense of immersion without feeling coloring.