公开(公告)号：US20240310634A1

公开(公告)日：2024-09-19

申请号：US18605855

申请日：2024-03-15

Applicant: Japan Display Inc.

Inventor： Yasuhiro TAKAHASHI ,  Shinichi KOMURA ,  Jin HIROSAWA

IPC: G02B27/01 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13363

CPC classification number: G02B27/0172 ,  G02B5/3016 ,  G02B5/3083 ,  G02B6/0068 ,  G02F1/133524 ,  G02F1/133615 ,  G02F1/133638 ,  G02B2027/0105 ,  G02B2027/0136 ,  G02B2027/0174

Abstract: According to one embodiment, a display device includes a display module configured to emit display light which is linearly polarized light, a first retardation film, a holographic optical element which is configured to reflect first circularly polarized light having a specific incident angle and transmit light having an incident angle which is different from the specific incident angle, a second retardation film, a reflective polarizer which is configured to reflect first linearly polarized light and transmit second linearly polarized light, a third retardation film, and a lens element which has a lens effect of condensing first circularly polarized light and converting first circularly polarized light into second circularly polarized light.

公开(公告)号：US20240184110A1

公开(公告)日：2024-06-06

申请号：US18526293

申请日：2023-12-01

Applicant: Japan Display Inc.

Inventor： Yasuhiro TAKAHASHI ,  Shinichi KOMURA

IPC: G02B27/01

CPC classification number: G02B27/0101 ,  G02B2027/0118

Abstract: According to an aspect, a head up display includes, inside a case: a display panel that is configured to emit light to project an image; a first mirror that is configured to reflect light having passed through the display panel; and a semi-reflective mirror provided between the display panel and the first mirror. The semi-reflective mirror includes a cholesteric liquid crystal layer that is configured to transmit light from the display panel and reflect light from the first mirror. An acute angle is formed between a surface of the semi-reflective mirror through which light from the display panel is transmitted and a surface of the display panel through which light from the display panel is emitted.

公开(公告)号：US20220398863A1

公开(公告)日：2022-12-15

申请号：US17664713

申请日：2022-05-24

Applicant: Japan Display Inc.

Inventor： Yasuhiro TAKAHASHI

IPC: G06V40/13 ,  G02B3/00

Abstract: According to one embodiment, an electronic device comprises a plurality of microlenses arranged in a hexagonal periodic structure, and provided in the plurality of sensor regions, and a plurality of spacers between the plurality of sensor regions, wherein the plurality of sensor regions include a first sensor region adjacent to the plurality of spacers, a second sensor region adjacent to the first sensor region in the first direction, and a third sensor region adjacent to the first sensor region in the second direction, and include at least one microlens overlapped with the first sensor region and the second sensor region, and at least one microlens overlapped with the first sensor region and the third sensor region.

公开(公告)号：US20190073974A1

公开(公告)日：2019-03-07

申请号：US16124528

申请日：2018-09-07

Applicant: Japan Display Inc.

Inventor： Takenori HIROTA ,  Jin HIROSAWA ,  Hidemasa YAMAGUCHI ,  Yasuhiro TAKAHASHI

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G02F1/133512 ,  G02F1/137 ,  G02F2001/134372 ,  G02F2001/13712 ,  G02F2201/123 ,  G09G2320/0252

Abstract: According to one embodiment, a display device comprises first and second substrates and a liquid crystal layer. The first substrate includes a pixel electrode and a common electrode. The second substrate is opposed to the first substrate. The liquid crystal layer is between the first substrate and the second substrate. A frame frequency for rewriting a voltage of the pixel electrode is 80 Hz or more. A liquid crystal material contained in the liquid crystal layer has negative dielectric anisotropy. Product Δnd of a gap d between the first substrate and the second substrate and refractive anisotropy Δn of the liquid crystal material is less than 0.33 μm. The gap d is more than 2 μm and less than 3 μm.