公开(公告)号：US12228834B2

公开(公告)日：2025-02-18

申请号：US17098869

申请日：2020-11-16

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Takehiro Yamada ,  Yusuke Higashi

IPC: G02F1/137 ,  E06B9/24 ,  G01N1/28 ,  G01N21/59 ,  G02F1/13 ,  G02F1/1343

Abstract: A light control device including a light control sheet including a light control layer switchable between at least a first state and a second state by changing alignment of liquid crystal molecules by application of a drive voltage, and transparent electrode layers sandwiching the light control layer. The light control layer is transparent in the first state and turbid in the second state. The light control layer is in the second state when there is no application of the drive voltage. When the light control layer is in the second state, the light control sheet has a transmitted image definition of 70% or less, where the transmitted image definition is based on JIS K 7374:2007 with an optical comb width set to 0.125 mm.

公开(公告)号：US20250035999A1

公开(公告)日：2025-01-30

申请号：US18911302

申请日：2024-10-10

Applicant: TOPPAN HOLDINGS INC.

Inventor： Tetsushi YOSHIDA ,  Katsuhito SAKAMOTO ,  Hiroyuki MICHI

IPC: G02F1/137 ,  G02F1/1343 ,  G02F1/1347

Abstract: A light control device includes two light control units each having a light control sheet reversibly changeable between a transparent state and an opaque state, one light control sheet overlapping another light control sheet. The light control device has a state in which the light control sheets are simultaneously opaque, the light control sheet includes a transparent polymer layer having voids, and a liquid crystal composition including a liquid crystal compound and a dichroic dye. The voids being filled with the liquid crystal composition. An absorbance difference, which is a value obtained by subtracting an average absorbance of the liquid crystal composition from an absorbance of the light control sheets in the opaque state, is 0.4 or greater.

公开(公告)号：US12210238B2

公开(公告)日：2025-01-28

申请号：US18430877

申请日：2024-02-02

Applicant: TOPPAN Inc.

Inventor： Yoshitaka Matsubara

IPC: G02F1/1335 ,  G02B5/22 ,  G02F1/1339 ,  G02F1/1343 ,  G02F1/137

Abstract: A light control sheet includes: a laminate having a light control layer containing a liquid crystal compound and a dichroic dye; and a first protective layer and a second protective layer that are disposed to the laminate and absorb light in an absorption wavelength range including an ultraviolet region. The laminate in an opaque state has a chromaticity a* of −15 to 15 and a chromaticity b* of −16 to 15 in a CIE1976 (L*a*b*) color system in accordance with JIS-Z-8781-4. The smallest value of the absorption wavelength range is 360 nm or less, and the upper limit of the absorption wavelength range is 410 nm to 430 nm within the visible region. The protective layers have a chromaticity a* of −10 to 0 and a chromaticity b* of 0 to 15 in a CIE1976 (L*a*b*) color system in accordance with JIS-Z-8781-4.

公开(公告)号：US12204220B2

公开(公告)日：2025-01-21

申请号：US17942250

申请日：2022-09-12

Applicant: Samsung Display Co., LTD.

Inventor： Eon Seok Oh

IPC: G02F1/137 ,  G02C7/10 ,  G02F1/01 ,  G02F1/1333 ,  G06F3/041 ,  H10K59/50 ,  G02F1/1335 ,  H10K59/122 ,  H10K59/35 ,  H10K59/40

Abstract: A display device includes a pixel layer disposed on a base substrate, a first inorganic insulating layer disposed on the pixel layer, a first switch electrode disposed on the first inorganic insulating layer, a liquid crystal layer disposed on the first inorganic insulating layer and the first switch electrode, a second inorganic insulating layer disposed on the liquid crystal layer, and a second switch electrode disposed on the second inorganic insulating layer to face the first switch electrode. The liquid crystal layer converts light emitted from the pixel layer into about 90 degree linearly polarized light by an electric field formed between the first switch electrode and the second switch electrode in the private mode.

公开(公告)号：US20250020991A1

公开(公告)日：2025-01-16

申请号：US18887894

申请日：2024-09-17

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Hirofumi TOYAMA

IPC: G03B21/62 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/137 ,  G03B21/10

Abstract: Provided is a display system for rear projection including a transparent screen where a background is visible, in which visibility of a video can be improved. The display system for rear projection includes: a projection device that emits video light; and a transparent screen on which the video light emitted from the projection device is projected, in which at a point that is positioned on the video light projected on the transparent screen and is closest to a projection opening of the projection device, an angle θ1 between a ray of the video light projected on the point and a normal line of the transparent screen is 30° or more.

公开(公告)号：US12197095B2

公开(公告)日：2025-01-14

申请号：US17927953

申请日：2021-01-21

Applicant: Smart Liquid Crystal Technologies Co., Ltd.

Inventor： Hongwei Zhang ,  Wenqing Shen ,  Jianhua Tang ,  Li Zhang

IPC: G02F1/1333 ,  C09K19/14 ,  C09K19/20 ,  C09K19/54 ,  C09K19/60 ,  G02F1/137

Abstract: A liquid crystal composition includes a component A composed of one or more liquid crystals with negative dielectric anisotropy and a component B composed of one or more compounds selected from a general formula I, where the optical anisotropy of the liquid crystal composition is larger than 0.14. The elastic coefficient of a liquid crystal system is adjusted by introducing a bi-mesogenic compound into a negative liquid crystal or a negative liquid crystal mixture. When the liquid crystal composition is used for the dimming device, the minimum light transmittance of the dimming device in the dark state can be significantly reduced, the adjustment range of the light transmittance in the light state and the dark state can be expanded, and the haze in the dark state can be increased, thereby broadening the use range. R1-MG1-X-MG2-R2  I

公开(公告)号：US12189136B2

公开(公告)日：2025-01-07

申请号：US18316824

申请日：2023-05-12

Applicant: Magic Leap, Inc.

Inventor： David Manly ,  Kevin Messer ,  Vaibhav Mathur ,  Clinton Carlisle

IPC: G02B27/28 ,  G02B5/30 ,  G02B27/01 ,  G02F1/1335 ,  G02F1/137

Abstract: A wearable display system includes an eyepiece stack having a world side and a user side opposite the world side, wherein during use a user positioned on the user side views displayed images delivered by the system via the eyepiece stack which augment the user's view of the user's environment. The wearable display system also includes an angularly selective film arranged on the world side of the of the eyepiece stack. The angularly selective film includes a polarization adjusting film arranged between pair of linear polarizers. The linear polarizers and polarization adjusting film significantly reduces transmission of visible light incident on the angularly selective film at large angles of incidence without significantly reducing transmission of light incident on the angularly selective film at small angles of incidence.

公开(公告)号：US20240427179A1

公开(公告)日：2024-12-26

申请号：US18667156

申请日：2024-05-17

Applicant: Sharp Dislay Technology Corporation

Inventor： Yuko TERAOKA ,  Takehisa Yoshida ,  Fumikazu Shimoshikiryoh

IPC: G02F1/13 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/137

Abstract: Provided are a liquid crystal panel capable of controlling the viewing angle with less increase in thickness and a video display device including the liquid crystal panel. The video display device includes: a display panel displaying an image; and a liquid crystal panel. The display panel includes at least a polarizer. The polarizer in the display panel is opposite to the liquid crystal panel on the display panel side of the liquid crystal panel. The liquid crystal panel includes, between a pair of transparent substrates, electrodes A arranged at intervals in plan view, a liquid crystal layer, and an electrode B opposite to the electrodes A with the liquid crystal layer interposed therebetween, and includes a voltage application unit which applies voltage between the electrodes A and the electrode B.

公开(公告)号：US12174410B2

公开(公告)日：2024-12-24

申请号：US17758168

申请日：2022-06-24

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Bin Zhao ,  Juncheng Xiao ,  Junling Liu

IPC: F21V8/00 ,  G02F1/13357 ,  G02F1/1368 ,  G02F1/137

Abstract: The present application discloses a backlight module and a display device. The backlight module includes a light guide plate, and the light-emitting surface includes a plurality of light-emitting units arranged in rows. A backlight plate is arranged on the light guide plate, and a plurality of transparent hole units are arranged on the backlight plate. A shutter layer is arranged on the backlight plate, and a number of shutter units are arranged on the shutter layer. The shutter units are arranged corresponding to the transparent hole units. The shutter units are used to control whether light passing through the transparent hole units passes through the shutter layer.

公开(公告)号：US20240411183A1

公开(公告)日：2024-12-12

申请号：US18664986

申请日：2024-05-15

Applicant: Snap Inc.

Inventor： Hemasiri K. Vithana

IPC: G02F1/1337 ,  C09K19/02 ,  G02F1/137 ,  G02F1/139

Abstract: A method for manufacturing a liquid crystal (LC) display includes determining an amount of an LC material to be used in the LC display, determining a silane material to be mixed with the LC material and an amount of the silane material to be mixed with the LC material based on the LC material and the amount of the LC material, mixing the amount of the silane material with the amount of the LC material to generate an LC mixture, and heat treating the LC mixture in contact with a display substrate to bond at least a portion of the silane material to one or more surfaces of the display substrate, such that the silane material acts as a surfactant. The amount of the silane material may constitute at least 0.8% of the LC mixture by weight.