公开(公告)号：US20230375873A1

公开(公告)日：2023-11-23

申请号：US18195848

申请日：2023-05-10

Applicant: Sharp Display Technology Corporation

Inventor： Yuichi KAWAHIRA ,  Masahiro HASEGAWA ,  Ryosuke SAIGUSA ,  Akira SAKAI

IPC: G02F1/1335 ,  G02F1/13363

CPC classification number: G02F1/133531 ,  G02F1/13363 ,  G02F1/133607

Abstract: Provided is a liquid crystal display device sequentially including: a first polarizer; a liquid crystal panel; a second polarizer; a biaxial retarder; a third polarizer; and a backlight including a light source and a prism sheet disposed closer to the viewing surface side than the light source is. The prism sheet includes prisms arranged in multiple columns on a surface close to the viewing surface side. The liquid crystal display has a light diffusion property curve having no side lobe or having a side lobe satisfying a ratio of a local maximum luminance to a local minimum luminance of 1.35 or less, the light diffusion property curve being obtained by plotting a luminance in a white display state in a direction perpendicular to ridge lines of the prisms against a polar angle.

公开(公告)号：US20230333402A1

公开(公告)日：2023-10-19

申请号：US18134504

申请日：2023-04-13

Applicant: Sharp Display Technology Corporation

Inventor： Masahiro HASEGAWA ,  Akira SAKAI ,  Kiyoshi MINOURA

IPC: G02B30/24 ,  G02B30/25 ,  G02F1/13363 ,  G02F1/1335 ,  G02F1/1347

CPC classification number: G02B30/24 ,  G02B30/25 ,  G02F1/133638 ,  G02F1/133528 ,  G02F1/1347 ,  G02F1/133634 ,  G02F2413/13 ,  G02F2413/14 ,  G02F2413/04 ,  G02C11/10

Abstract: Provided are 3D glasses capable of reducing crosstalk when disposed on the viewer side of a liquid crystal panel that is time-divisionally driven; an optical device including the 3D glasses; and a three-dimensional image display device including the optical device. The 3D glasses include a right-eye polarizer and a left-eye polarizer, the right-eye polarizer and the left-eye polarizer each including a polarizing plate and a first λ/4 plate, at least one of the right-eye polarizer or the left-eye polarizer including a phase difference layer on or behind a back surface side of the polarizing plate, wherein a phase difference introduced by the right-eye polarizer in a thickness direction at a wavelength of 550 nm is different from a phase difference introduced by the left-eye polarizer in the thickness direction at a wavelength of 550 nm.

公开(公告)号：US20230095922A1

公开(公告)日：2023-03-30

申请号：US17940103

申请日：2022-09-08

Applicant: Sharp Display Technology Corporation

Inventor： Miho YAMADA ,  Akira SAKAI ,  Masahiro HASEGAWA ,  Yuichi KAWAHIRA ,  Hiroaki ASAGI

IPC: G02B5/30 ,  C09K19/56

Abstract: Provided are a polarizing plate including a polarizing layer containing a lyotropic liquid crystal compound and capable of achieving uniform polarization properties over a large area, and a display device equipped with the polarizing plate. The polarizing plate includes: an alignment film; and a polarizing layer on the alignment film. The alignment film contains an alignment film polymer, has a static contact angle with water of 60° or smaller, and has a slow axis. The polarizing layer contains a lyotropic liquid crystal compound and has an absorption axis parallel to the above slow axis. The lyotropic liquid crystal compound is preferably dichroic.