公开(公告)号：US12276880B2

公开(公告)日：2025-04-15

申请号：US18378856

申请日：2023-10-11

Applicant: Sharp Display Technology Corporation

Inventor： Fumikazu Shimoshikiryoh ,  Shinichi Terashita ,  Kouichi Watanabe

IPC: G02F1/1335 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368

Abstract: A liquid crystal display device includes a first substrate, a second substrate disposed more to a viewer side than the first substrate, and a liquid crystal layer provided between the first substrate and the second substrate, with a plurality of pixels being arrayed in a matrix shape. Each pixel includes a reflective region for display in a reflection mode. The first substrate includes a thin film transistor provided corresponding to each pixel, a pixel electrode electrically connected to the thin film transistor, and a reflective layer located at least in the reflective region. The first substrate further includes a common electrode adjacent to the pixel electrode with a dielectric layer interposed between the pixel electrode and the common electrode. At least one from among the pixel electrode and the common electrode includes at least one slit.

公开(公告)号：US12204193B1

公开(公告)日：2025-01-21

申请号：US18748023

申请日：2024-06-19

Applicant: Sharp Display Technology Corporation

Inventor： Shinichi Terashita ,  Kouichi Watanabe ,  Takehisa Yoshida ,  Fumikazu Shimoshikiryoh

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/1368 ,  G02F1/137

Abstract: A liquid crystal display device includes a first substrate, a liquid crystal layer, a second substrate, a retardation layer, and a polarizer in this order from a back face side, and includes a plurality of pixels arrayed in a matrix shape, in which the first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that are capable of generating a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film that is in contact with the liquid crystal layer, the second substrate includes a second horizontal alignment film in contact with the liquid crystal layer, the liquid crystal layer has a twist alignment when no voltage is applied, and the retardation layer includes a λ/4 plate, a λ/2 plate, and a positive C plate.

公开(公告)号：US12292654B2

公开(公告)日：2025-05-06

申请号：US18133981

申请日：2023-04-12

Applicant: Sharp Display Technology Corporation

Inventor： Shinichi Terashita ,  Kouichi Watanabe ,  Fumikazu Shimoshikiryoh

IPC: G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/139 ,  G09G3/34

Abstract: Provided is a liquid crystal display device that can achieve high-speed response in both rise time and fall time and has a high transmittance, a high contrast ratio, and excellent viewing angle characteristics. The liquid crystal display device provides color display using a field sequential driving system where each frame period includes subframe periods and includes: a liquid crystal display panel; a light source that irradiates the liquid crystal display panel with lights of multiple colors; and a controller that drives the light source to time-divisionally irradiate the liquid crystal display panel with the lights of multiple colors. The liquid crystal display panel includes, sequentially in the following order: a first substrate including pixel electrodes; a first alignment film; a liquid crystal layer; a second alignment film; and a second substrate including a common electrode.

公开(公告)号：US20250028205A1

公开(公告)日：2025-01-23

申请号：US18747437

申请日：2024-06-18

Applicant: Sharp Display Technology Corporation

Inventor： Shinichi Terashita ,  Kouichi Watanabe ,  Takehisa Yoshida ,  Fumikazu Shimoshikiryoh

IPC: G02F1/13363 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/139

Abstract: A liquid crystal display device includes a first substrate, a liquid crystal layer, a second substrate, a retardation layer, and a polarizer in this order from a back face side, and includes a plurality of pixels arrayed in a matrix shape, in which the first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that are capable of generating a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film that is in contact with the liquid crystal layer, the second substrate includes a second horizontal alignment film in contact with the liquid crystal layer, the retardation layer includes a Δ/4 plate and a Δ/2 plate, the liquid crystal layer includes a positive-type liquid crystal material or a negative-type liquid crystal material, and has a twist alignment when no voltage is applied, and an angle formed by a polarization axis of the polarizer and an alignment direction of liquid crystal molecules defined by the first horizontal alignment film is within a predetermined range.

公开(公告)号：US12147124B2

公开(公告)日：2024-11-19

申请号：US18378841

申请日：2023-10-11

Applicant: Sharp Display Technology Corporation

Inventor： Shinichi Terashita ,  Kouichi Watanabe ,  Fumikazu Shimoshikiryoh

IPC: G02F1/13363 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/139 ,  G02F1/137

Abstract: A liquid crystal display device includes a first substrate, a second substrate disposed on a viewer side relative to the first substrate, a liquid crystal layer provided between the first substrate and the second substrate, a polarizer disposed on the viewer side relative to the liquid crystal layer, and a phase difference layer disposed between the polarizer and the liquid crystal layer, and also includes a plurality of pixels arrayed in a matrix shape. The first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that can generate a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film in contact with the liquid crystal layer. The second substrate includes a second horizontal alignment film in contact with the liquid crystal layer. The liquid crystal layer takes a twist alignment when no voltage is applied.

公开(公告)号：US20250138361A1

公开(公告)日：2025-05-01

申请号：US18899016

申请日：2024-09-27

Applicant: Sharp Display Technology Corporation

Inventor： Shinichi Terashita ,  Kouichi Watanabe

IPC: G02F1/1335 ,  G02F1/1333 ,  G02F1/1343

Abstract: Provided is a liquid crystal display device with sufficiently reduced or prevented alignment defect generation and useful as an in-cell touch panel capable of providing display in the reflective mode. The liquid crystal display device includes first and second substrates and a liquid crystal layer. The first substrate includes a reflective layer reflecting light, first and second electrodes capable of generating a transverse electric field in the liquid crystal layer, and a first horizontal alignment film. At least one of the first electrode or the second electrode includes strip portions and a slit between adjacent two strip portions among the strip portions. The second substrate includes a second horizontal alignment film in contact with the liquid crystal layer. The liquid crystal layer includes liquid crystal molecules having a positive anisotropy of dielectric constant and is in a twist alignment during no voltage application.

公开(公告)号：US20250028199A1

公开(公告)日：2025-01-23

申请号：US18748023

申请日：2024-06-19

Applicant: Sharp Display Technology Corporation

Inventor： Shinichi Terashita ,  Kouichi Watanabe ,  Takehisa Yoshida ,  Fumikazu Shimoshikiryoh

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/1368 ,  G02F1/137

Abstract: A liquid crystal display device includes a first substrate, a liquid crystal layer, a second substrate, a retardation layer, and a polarizer in this order from a back face side, and includes a plurality of pixels arrayed in a matrix shape, in which the first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that are capable of generating a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film that is in contact with the liquid crystal layer, the second substrate includes a second horizontal alignment film in contact with the liquid crystal layer, the liquid crystal layer has a twist alignment when no voltage is applied, and the retardation layer includes a λ/4 plate, a λ/2 plate, and a positive C plate.