公开(公告)号：US20240077731A1

公开(公告)日：2024-03-07

申请号：US18461046

申请日：2023-09-05

Applicant: Japan Display Inc.

Inventor： Shinichi KOMURA ,  Kazutaka NAGAOKA

IPC: G02B27/01 ,  G02F1/01 ,  G02F1/1335 ,  G02F1/1343

CPC classification number: G02B27/0172 ,  G02F1/0136 ,  G02F1/133528 ,  G02F1/13439 ,  G02B2027/0174

Abstract: According to one embodiment, a display device includes an illumination device, a display panel opposed, a first retardation film, a holographic optical element, a second retardation film, a reflection polarizer spaced apart from the holographic optical element, and configured to transmit first linearly polarized light and reflect second linearly polarized light orthogonal to the first linearly polarized light, and a polarization conversion element located between the second retardation film and the reflection polarizer, and configured to maintain a polarization direction of the display light and rotate a polarization direction of external light transmitted through the light guide.

公开(公告)号：US20210181402A1

公开(公告)日：2021-06-17

申请号：US17184665

申请日：2021-02-25

Applicant: Japan Display Inc.

Inventor： Takashi OTA ,  Kazutaka NAGAOKA ,  Michihide SHIBATA ,  Toshihiro YAJIMA

IPC: F21V8/00 ,  H04N5/225

Abstract: According to one embodiment, an electronic device includes a liquid crystal panel and an illumination unit which illuminates the liquid crystal panel. The illumination unit includes a light guide comprising a first side surface, a main surface opposing the liquid crystal panel and an opening made by a notch or a through hole, a first light source opposing to the first side surface, and a second light source provided closer to the opening than to the first light source.