公开(公告)号：US20250166581A1

公开(公告)日：2025-05-22

申请号：US19034921

申请日：2025-01-23

Applicant: Japan Display Inc.

Inventor： Gang SHAO

IPC: G09G3/36

Abstract: An illumination device and an illumination system that are capable of achieving dynamic light distribution control by using 1/f fluctuation are provided. The illumination device includes: a light source; an optical element provided on an optical axis of the light source and configured to control a light distribution state of light emitted from the light source in two directions of a first direction and a second direction different from the first direction; and a processing circuit configured to execute at least light distribution control processing for the optical element. The processing circuit dynamically controls the light distribution state in at least one of the first direction or the second direction by using 1/f fluctuation based on a light distribution setting value that is a setting value for executing the light distribution control processing.

公开(公告)号：US20250164841A1

公开(公告)日：2025-05-22

申请号：US18947096

申请日：2024-11-14

Applicant: Japan Display Inc. ,  OSAKA UNIVERSITY

Inventor： Junji KOBASHI ,  Shinichiro OKA ,  Yoshinori TANAKA ,  Hiroyuki YOSHIDA

IPC: G02F1/1347 ,  G02F1/1335

Abstract: According to one embodiment, a liquid crystal optical element includes a transparent substrate, a liquid crystal layer provided above the transparent substrate, including a cholesteric liquid crystal, and configured to reflect first circularly polarized light having a same direction as a twist direction of the cholesteric liquid crystal, and a polarization control layer provided on the liquid crystal layer, and configured to control a polarization state of second circularly polarized light having a direction opposite to the first circularly polarized light, totally reflect the second circularly polarized light which passed through the liquid crystal layer and emit the light to the liquid crystal layer as the second circularly polarized light.

公开(公告)号：US20250155751A1

公开(公告)日：2025-05-15

申请号：US19021422

申请日：2025-01-15

Applicant: Japan Display Inc.

Inventor： Masateru MORIMOTO ,  Saori SUGIYAMA ,  Motoharu MIYAMOTO

IPC: G02F1/1339 ,  G02F1/1343 ,  G02F1/1362

Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.

公开(公告)号：US12299102B2

公开(公告)日：2025-05-13

申请号：US18212602

申请日：2023-06-21

Applicant: Japan Display Inc.

Inventor： Gang Shao

IPC: G06F21/00 ,  G06F21/32 ,  G06V40/12

Abstract: A personal authentication system includes: a detection device having a first period in which detection of a detection target body is performed and a second period in which detection of asperities on a surface of the detection target body is performed; and a control device. The detection device has, as input keys for a password, first regions in a detection region. The detection device is configured to allocate mutually different segmented regions in a second region having center coordinates at touch detection coordinates detected in the first region in the first period for each key inputting of the password, and output a segmented image acquired in the segmented region in the second period to the control device for each key inputting of the password. The control device is configured to generate a fingerprint image by synthesizing the segmented images acquired in the respective key inputtings of the password.

公开(公告)号：US12298646B2

公开(公告)日：2025-05-13

申请号：US17509090

申请日：2021-10-25

Applicant: Japan Display Inc.

Inventor： Toshiki Kaneko ,  Akihiro Hanada

IPC: G02F1/16766 ,  G02F1/167 ,  G02F1/16756 ,  H01L27/12 ,  H10D86/40 ,  H10D86/60

Abstract: According to one embodiment, a display device includes a first oxide semiconductor, a second oxide semiconductor, a first source electrode contacting the first oxide semiconductor in a first opening, a first drain electrode contacting the first oxide semiconductor in a second opening, a second source electrode contacting the second oxide semiconductor in a third opening, and a second drain electrode contacting the second oxide semiconductor in a fourth opening. A length of a layer stack of the second insulating film and the first source electrode between the first opening and the second opening is greater than a length of a layer stack of the second insulating film and the second source electrode between the third opening and the fourth opening.

公开(公告)号：US20250151423A1

公开(公告)日：2025-05-08

申请号：US19014644

申请日：2025-01-09

Applicant: Japan Display Inc.

Inventor： Akihiko FUJISAWA ,  Kaoru ITO ,  Shiori SEINO

IPC: H10F39/12 ,  H04N25/75 ,  H04N25/772 ,  H10F39/00

Abstract: According to an aspect, a detection device includes: a photodiode provided on a substrate; a light source disposed so as to face the photodiode; and a liquid crystal panel disposed between the photodiode and the light source in a direction orthogonal to the substrate. The liquid crystal panel includes a plurality of pixels. In plan view, the photodiode has a size larger than a size of each of the pixels, and the photodiode is disposed in a position overlapping the pixels. The liquid crystal panel is configured to bring at least one of the pixels overlapping the photodiode into a transmitting state and bring another of the pixels into a non-transmitting state.

公开(公告)号：US20250151192A1

公开(公告)日：2025-05-08

申请号：US18921366

申请日：2024-10-21

Applicant: Japan Display Inc.

Inventor： Takumi SANO ,  Yosuke HYODO

IPC: H05K1/02 ,  H05K1/18

Abstract: According to one embodiment, a flexible substrate including, an insulating base including first strip portions, second strip portions, and island-shaped portions each located at an intersection between the first strip portions and the second strip portions, electrical elements overlapping the island-shaped portions, respectively, scanning lines extending while overlapping the first strip portions, respectively, signal lines extending while overlapping the second strip portions, respectively, a first organic insulating film, a second organic insulating film, a stopper layer located between the first and second organic insulating film, and a barrier layer located on the second organic insulating film.

公开(公告)号：US20250149800A1

公开(公告)日：2025-05-08

申请号：US19002759

申请日：2024-12-27

Applicant: Japan Display Inc.

Inventor： Daiichi SUZUKI ,  Shinichiro OKA ,  Mitsutaka OKITA

IPC: H01Q15/14 ,  G02F1/1343

Abstract: A reflecting device includes a plurality of first patch electrodes, a plurality of second patch electrodes having a size different from a size of the first patch electrodes, a ground electrode opposing the plurality of first patch electrodes and the plurality of second patch electrodes and separated from the plurality of first patch electrodes and the plurality of second patch electrodes, and a liquid crystal layer between the plurality of first patch electrodes and the plurality of second patch electrodes and the ground electrode, wherein the plurality of first patch electrodes and the plurality of second patch electrodes are arranged alternately in a first direction or a second direction intersecting the first direction, and each first patch electrode is adjacent to each second patch electrode in the first direction or the second direction.

公开(公告)号：US20250149786A1

公开(公告)日：2025-05-08

申请号：US19003062

申请日：2024-12-27

Applicant: Japan Display Inc.

Inventor： Mitsutaka OKITA ,  Shinichiro OKA ,  Daiichi SUZUKI ,  Hiromi MATSUNO ,  Takuya OHTO ,  Yoshiaki AMANO

IPC: H01Q3/46

Abstract: A driving method of an intelligent reflecting surface having a plurality of reflecting elements arranged in a matrix, the method includes dividing the plurality of reflecting elements arranged in the matrix into a first region that controls an amount of phase change for each row of the plurality of reflecting elements arrayed in a row direction and a second region that controls an amount of phase change for every two adjacent rows of a plurality of reflecting elements arrayed in the row direction, and driving each of the plurality of reflecting elements belonging to the first region

公开(公告)号：US20250147368A1

公开(公告)日：2025-05-08

申请号：US19001672

申请日：2024-12-26

Applicant: Japan Display Inc.

Inventor： Hiroyuki ABE ,  Kentaro AGATA

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/1339 ,  G02F1/1345 ,  G09G3/36

Abstract: It is possible to reduce a size of a lower frame region to ensure a wiring corrosion margin equivalent to that of a conventional technique. In a display device, a video signal wiring arranged in the lower frame region includes, in a region between a terminal section (terminal) and a video signal line, a first wiring formed on a first wiring layer and having one end connected to the terminal section to which a video signal line driving circuit is connected, a second wiring formed on a second wiring layer different from the first wiring layer and having one end connected to the other end of the first wiring, and a third wiring formed on the first wiring layer and having one end connected to the other end of the second wiring. The other end of the third wiring is connected to the video signal line via a fourth wiring formed on the second wiring layer, and the first wiring layer is formed on the side closer to an array substrate than to the second wiring layer.