公开(公告)号：US20240427201A1

公开(公告)日：2024-12-26

申请号：US18669281

申请日：2024-05-20

Applicant: Sharp Display Technology Corporation

Inventor： Kouichi WATANABE ,  Shinichi TERASHITA ,  Fumikazu SHIMOSHIKIRYOH

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

Abstract: To provide a liquid crystal display device including a plurality of pixels arrayed in a matrix shape that includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a reflective layer, a first electrode and a second electrode capable of generating a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film, at least one of the first electrode and the second electrode includes a plurality of belt-shaped portions and a slit located between two adjacent belt-shaped portions of the plurality of belt-shaped portions, in each pixel, the plurality of belt-shaped portions have a linear shape extending substantially parallel to each other and in the same direction, and do not include a bending part, the second substrate includes a second horizontal alignment film and the liquid crystal layer takes a twist alignment when no voltage is applied.

公开(公告)号：US20240168327A1

公开(公告)日：2024-05-23

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 ,  G02F1/1362 ,  G02F1/1368

CPC classification number: G02F1/133553 ,  G02F1/133345 ,  G02F1/133738 ,  G02F1/136227 ,  G02F1/1368 ,  G02F1/13439 ,  G02F2203/02

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：US20230333428A1

公开(公告)日：2023-10-19

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 ,  G02F1/1343 ,  G02F1/1337 ,  G02F1/139 ,  G09G3/34

CPC classification number: G02F1/133622 ,  G02F1/134336 ,  G02F1/133746 ,  G02F1/1396 ,  G02F1/133742 ,  G09G3/3413 ,  G02F2203/01 ,  G02F2203/64 ,  G02F2202/40 ,  G02F2201/52 ,  G09G2300/0491 ,  G09G2310/0235

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：US20250028207A1

公开(公告)日：2025-01-23

申请号：US18763810

申请日：2024-07-03

Applicant: Sharp Display Technology Corporation

Inventor： Tsuyoshi OKAZAKI ,  Shinichi TERASHITA ,  Yuko TERAOKA ,  Kouichi WATANABE ,  Takehisa YOSHIDA ,  Yoshito HASHIMOTO

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

Abstract: A liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a reflective layer, a first electrode and a second electrode configured to generate a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film. An electrode, of the first electrode and the second electrode, disposed on a side of the liquid crystal layer includes a plurality of belt-shaped portions and a slit positioned between two adjacent belt-shaped portions of the plurality of belt-shaped portions, the liquid crystal layer is constituted by a liquid crystal material including a liquid crystal molecule, the liquid crystal material is a positive type. The second substrate includes a second horizontal alignment film being in contact with the liquid crystal layer, and the liquid crystal layer takes a twist alignment when no voltage is applied.

公开(公告)号：US20250004589A1

公开(公告)日：2025-01-02

申请号：US18676503

申请日：2024-05-29

Applicant: Sharp Display Technology Corporation

Inventor： Fumikazu SHIMOSHIKIRYOH ,  Takehisa YOSHIDA ,  Shinichi TERASHITA ,  Kouichi WATANABE

IPC: G06F3/041 ,  G02F1/1362 ,  G02F1/1368 ,  G06F3/044

Abstract: A liquid crystal display device includes: a first substrate; a second substrate; a liquid crystal layer; a polarizer; and a phase difference layer, the liquid crystal display device further including a plurality of pixels arranged in a matrix, wherein each of the plurality of pixels includes a reflection region, the first substrate includes: a plurality of gate lines; a plurality of source lines; a plurality of thin film transistors; a plurality of pixel electrodes; and a reflective layer, the first substrate further includes: a plurality of touch sensor electrodes; and a plurality of touch lines each electrically connected to a corresponding one of the plurality of touch sensor electrodes, the reflective layer is divided into a plurality of reflective segments that are electrically independent from each other, and each of the plurality of reflective segments overlaps two or more of the plurality of pixel electrodes in a plan view.

公开(公告)号：US20240168339A1

公开(公告)日：2024-05-23

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 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/133638 ,  G02F1/13338 ,  G02F1/133636 ,  G02F1/133738 ,  G02F1/13439 ,  G02F1/133528

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：US20250076703A1

公开(公告)日：2025-03-06

申请号：US18765408

申请日：2024-07-08

Applicant: Sharp Display Technology Corporation

Inventor： Kouichi WATANABE ,  Shinichi TERASHITA

IPC: G02F1/1335 ,  G02F1/1333 ,  G02F1/13363 ,  G02F1/1343

Abstract: A transflective liquid crystal display device includes a first polarizer, a first phase difference layer, a first substrate, a liquid crystal layer, a second substrate, a second phase difference layer, and a second polarizer. The first substrate includes a reflective layer, a pair of electrodes configured to generate a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film. The second substrate includes a second horizontal alignment film. The first phase difference layer includes a first λ/2 plate and a first λ/4 plate. The second phase difference layer includes a second λ/2 plate and a second λ/4 plate. At least one of the first phase difference layer and the second phase difference layer further includes a positive C plate. The liquid crystal layer includes a liquid crystal material having a negative-type anisotropy of dielectric constant and takes a twist alignment when no voltage is applied. Each of pixels includes a reflective region in which light is reflected by the reflective layer to perform display and a transmissive region in which light is transmitted to perform display.

公开(公告)号：US20250053044A1

公开(公告)日：2025-02-13

申请号：US18760063

申请日：2024-07-01

Applicant: Sharp Display Technology Corporation

Inventor： Kouichi WATANABE ,  Shinichi TERASHITA

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

Abstract: A transflective liquid crystal display device provided with a plurality of pixels, and includes: a first polarizer, a first phase difference layer, a first substrate, a liquid crystal layer, a second substrate, a second phase difference layer, and a second polarizer. The first substrate includes a reflective layer. The first phase difference layer includes a first λ/2 plate and a first λ/4 plate. The second phase difference layer includes a second λ/2 plate and a second λ/4 plate. At least one of the first phase difference layer and the second phase difference layer further includes a positive C plate. The liquid crystal layer takes a twist alignment when no voltage is applied. Each of the plurality of pixels includes a reflective region in which light is reflected by the reflective layer to perform display and a transmissive region in which light is transmitted to perform display.