公开(公告)号：US11714320B2

公开(公告)日：2023-08-01

申请号：US17535753

申请日：2021-11-26

Applicant: Meta Platforms Technologies, LLC

Inventor： Fenglin Peng ,  Lu Lu ,  Jacques Gollier

IPC: G02F1/1343 ,  G02F1/141 ,  G02F1/03 ,  G02F1/13363 ,  G02F1/137

CPC classification number: G02F1/134363 ,  G02F1/0311 ,  G02F1/133632 ,  G02F1/141 ,  G02F1/13775 ,  G02F1/133638

Abstract: A waveplate is provided. The waveplate includes a first liquid crystal (“LC”) layer including LC molecules that are in-plane switchable by an external field to switch the waveplate between states of different phase retardances. The waveplate includes a second LC layer and a third LC layer sandwiching the first LC layer. Azimuthal angles of effective refractive index ellipsoids of the second LC layer and the third LC layer are different.

公开(公告)号：US11698563B2

公开(公告)日：2023-07-11

申请号：US17380812

申请日：2021-07-20

Applicant: Kent Displays, Inc.

Inventor： Todd Ernst ,  Nathan Hirt ,  Bryan Owen ,  Clinton Braganza ,  Hunter Morris

IPC: G02F1/137 ,  G02F1/1333 ,  G06F3/0354 ,  G02F1/1339

CPC classification number: G02F1/13718 ,  G02F1/13338 ,  G02F1/13392 ,  G02F1/133305 ,  G06F3/03545

Abstract: A liquid crystal writing device is erased by a stylus. The liquid crystal writing device includes a liquid crystal layer including cholesteric liquid crystal material. A user applies pressure to a flexible substrate that changes reflectivity of the cholesteric liquid crystal material to form images on the liquid crystal writing device. The liquid crystal layer is disposed between electrically conductive layers. Writing device terminals are electrically conductive and connected to the electrically conductive layers. The stylus includes stylus electronics adapted to apply an erase voltage or erase voltage waveform to the writing device terminals.

公开(公告)号：US20230217794A1

公开(公告)日：2023-07-06

申请号：US18091972

申请日：2022-12-30

Applicant: Samsung Display Co., LTD.

Inventor： Yong Seok KIM ,  SIKWANG KIM ,  Youngchan KIM ,  Minhee SON ,  Saet Byeol SHIN ,  Junhyuk WOO

IPC: H10K59/80 ,  H10K59/50 ,  H10K59/12 ,  G02F1/13357 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/137 ,  G02F1/1343

CPC classification number: H10K59/8792 ,  H10K59/50 ,  H10K59/12 ,  H10K59/873 ,  G02F1/133621 ,  G02F1/13338 ,  G02F1/133512 ,  G02F1/137 ,  G02F1/134309 ,  H10K59/40

Abstract: A display device includes: a substrate, a light emitting element which is on the substrate and emits light in a light emitting direction; and a side wall layer including a plurality of light control patterns arranged along the substrate, where the side wall layer is adjacent to the light emitting element in the light emitting direction of the light emitting element. Within the side wall layer which is adjacent to the light emitting element in the light emitting direction, each of the plurality of light control patterns has a certain height, the plurality of light control patterns are arranged along a major surface of the substrate and spaced apart from each other by a certain distance between two adjacent light control patterns of the light control patterns, and a ratio of the height to the distance is greater than about 1.4.

公开(公告)号：US20230205030A1

公开(公告)日：2023-06-29

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

CPC classification number: G02F1/13712 ,  C09K19/14 ,  C09K19/20 ,  C09K19/54 ,  C09K19/60 ,  G02F2202/04 ,  G02F2203/48

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.

公开(公告)号：US11686965B2

公开(公告)日：2023-06-27

申请号：US17563154

申请日：2021-12-28

Applicant: TOPPAN Inc.

Inventor： Toshiji Yasuhara ,  Takehiro Yamada

IPC: G02F1/1334 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/137

CPC classification number: G02F1/1334 ,  G02F1/137 ,  G02F1/13306 ,  G02F1/134309 ,  G02F2203/01

Abstract: A light control sheet including a light control layer switchable between a transparent state and an opaque state, and transparent electrode layers sandwiching the light control layer. The light control layer includes a transparent polymer layer that has domains whose average size is 1.0 μm-1.55 μm, and the light control layer includes a liquid crystal composition at a concentration of 37%-55% such that the liquid crystal composition fills the domains.

公开(公告)号：US11686942B2

公开(公告)日：2023-06-27

申请号：US16730293

申请日：2019-12-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Yang Zhao ,  Afsoon Jamali ,  Junren Wang ,  Wai Sze Tiffany Lam ,  Lu Lu ,  Douglas Robert Lanman

IPC: G02F1/137 ,  G02B27/01 ,  G03B13/36

CPC classification number: G02B27/0172 ,  G02F1/13718 ,  G03B13/36

Abstract: A display system includes a source of unpolarized image light, and a stack of polarization-selective optical elements operable to switchably convert the unpolarized image light into two orthogonally polarized light beams, each of which being switchable in at least one beam characteristic. An output polarizer selects one of the two orthogonally polarized light beams for providing to a user. A depolarizer may be disposed between an electronic display emitting polarized light and the stack. The depolarizer may be in the form of an LC bilayer with randomized in-plane optic axis.

公开(公告)号：US11679901B2

公开(公告)日：2023-06-20

申请号：US16618205

申请日：2018-03-30

Applicant: JAPAN AEROSPACE EXPLORATION AGENCY

Inventor： Junichiro Kawaguchi ,  Osamu Mori ,  Toshihiro Chujo ,  Hirokazu Ishida

IPC: B64G1/24 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/137

CPC classification number: B64G1/244 ,  G02F1/137 ,  G02F1/1334 ,  G02F1/133504

Abstract: To provide a sheet-like optical device capable of selectively emitting light whose optical path has a changed orientation.
An optical device includes a first sheet and a second sheet. The first sheet is configured to be electrically switchable between a first state in which the first sheet extends along an in-plane direction orthogonal to a thickness direction and has transparency in the thickness direction, and a second state in which the first sheet has lower transparency in the thickness direction than the transparency in the first state. The second sheet has a prism surface on which an inclined surface inclined with respect to the in-plane direction is arranged along the in-plane direction, the second sheet facing the first sheet in the thickness direction.

公开(公告)号：US20230185145A1

公开(公告)日：2023-06-15

申请号：US17623496

申请日：2021-12-20

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

Inventor： Qian DENG ,  Wei CHENG

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

CPC classification number: G02F1/137 ,  G02F1/1323 ,  G02F1/134309 ,  G02F2203/22 ,  G02F2203/48 ,  G02F1/133553

Abstract: The present application provides a display device, when the display device is in a first display mode, a transmittance of first optical units to light is less than a transmittance of second optical units to light, so that diffracted light is emitted due to a phenomenon that apertures in a diffraction panel are alternating between light and dark. After the diffracted light emitted by the diffraction panel passes through a display panel, the display device has a wide viewing angle in the first display mode.

公开(公告)号：US20230176438A1

公开(公告)日：2023-06-08

申请号：US18162379

申请日：2023-01-31

Applicant: FUJIFILM Corporation

Inventor： Shinpei YOSHIDA ,  Yuta TAKAHASHI ,  Kentaro YAMURA ,  Keisuke KODAMA

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

CPC classification number: G02F1/137 ,  G02F1/133362 ,  G02F1/133636 ,  G02F1/133742 ,  G02F1/133738

Abstract: Provided is an optically anisotropic layer formed of a liquid crystal compound, which includes first and second layers in direct contact along a thickness direction, an alignment state of the liquid crystal compound in the first layer is different from the second layer, and the optically anisotropic layer satisfies a relationship of Expression (2A) Xmax/Xmin

公开(公告)号：US20230168530A1

公开(公告)日：2023-06-01

申请号：US18104254

申请日：2023-01-31

Applicant: AGC Inc.

Inventor： Takashi SHIBUYA ,  Junichi KAKUTA ,  Risa KIMURA ,  Yuhei GIMA

IPC: G02F1/1333 ,  G02F1/137

CPC classification number: G02F1/133302 ,  G02F1/13725 ,  G02F2201/50

Abstract: To prevent a light control device from being scarred.
A laminated glass 10 comprises a pair of glass plates 11 and 12, and
a light control device 15 formed between the pair of glass plates 11 and 12, having a liquid crystal layer 153, a substrate 151, a conductive film 152 formed on one surface 151 S1 of the substrate 151 and a protective film 154 formed on the other surface 151S2 of the substrate 151. The liquid crystal layer has at least one member selected from the group consisting of guest-host liquid crystal, TN liquid crystal, PC liquid crystal, STN liquid crystal, ECB liquid crystal, OCB liquid crystal, IPS liquid crystal and VA liquid crystal. The protective film 154 has abrasion resistance higher than that of the substrate 151.