公开(公告)号：US20250044621A1

公开(公告)日：2025-02-06

申请号：US18704933

申请日：2022-10-30

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Satoshi AYA ,  Mingjun HUANG ,  Xiuhu ZHAO ,  Jinxing LI

IPC: G02F1/00 ,  C09K19/02 ,  C09K19/20 ,  C09K19/58 ,  G02F1/355 ,  G02F1/37

Abstract: The present invention discloses a ferroelectric helical liquid crystal material and a method for realizing second harmonic enhancement therefor. By means of the method, a ferroelectric helical liquid crystal with an ultrahigh polarity helical structure is obtained by doping chiral molecules with ferroelectric nematic phase liquid crystals, and a dielectric constant of the ferroelectric helical liquid crystal is 104. This type of liquid crystal material has a superstrong nonlinear optical effect and can excite high-intensity second harmonic waves (for example, a nonlinear coefficient of the liquid crystal material is equivalent to that of a LiNbO3 nonlinear (NLO) crystalline material). Based on adjustability of a periodical helical structure of the ferroelectric helical liquid crystal, a molecular pitch of the ferroelectric helical liquid crystal is tuned by means of a concentration of chiral molecules (i.e., a polarization period is regulated).

公开(公告)号：US20250043185A1

公开(公告)日：2025-02-06

申请号：US18228496

申请日：2023-07-31

Applicant: Nissan North America, Inc.

Inventor： Sogol Lotfi ,  Manas Likhit Holekevi Chandrappa ,  Balachandran Gadaguntla Radhakrishnan ,  Shigemasa Kuwata ,  Shunta Nabetani ,  Yoshimi Ota ,  Masanobu Uchimura ,  Simran Kumari

IPC: C09K19/58 ,  C09B31/02 ,  C09K19/02

Abstract: A chiral azobenzene dopant with helical twisting power has a structure represented by the following formula (I): wherein Z and Z′ are independently selected from the group consisting of naphthalene and phenanthrene; when Z or Z′ is naphthalene, the naphthalene optionally has R3 at the 6 position and R4 at the 6′ position; when Z or Z′ is phenanthrene, the phenanthrene optionally has R3 at the 7 position and R4 at the 7′ position; R1, R2, R3, and R4 are independently selected from the group consisting of an alkyl group having 1 to 20 carbons, an alkoxy group having 1 to 20 carbons, an aryl group having 6 to 20 carbons, and an aryloxy group having 6 to 20 carbons; and on any R1, R2, R3, and R4, on any CH2 a CH3 is optionally attached by replacing a hydrogen on a CH2.

公开(公告)号：US20240319424A1

公开(公告)日：2024-09-26

申请号：US18612533

申请日：2024-03-21

Applicant: LIGHT POLYMERS HOLDING

Inventor： James Chen ,  Evgeny Morozov ,  CC Hsiao ,  Valeriy Kuzmin

IPC: G02B5/30 ,  C09K19/38 ,  C09K19/58 ,  G02B1/08

CPC classification number: G02B5/3016 ,  C09K19/3819 ,  C09K19/582 ,  G02B1/08 ,  C09K2219/03

Abstract: A patterned linear polarizer layer is obtained by shear coating a polymeric lyotropic liquid crystal solution on a coatable substrate, drying and treating the resulting polymer layer with a doping-passivation solution containing the dopant and multi-valent cations, where the patterned structure is obtained using various methods like restricting the doping process to certain areas of the polymer layer or discoloring the doping agent in certain areas of the linear polarizer or by selective removal of parts of the linear polarizer layer and others. The thickness of the dry linear polarizer coating layer is 2.0 micrometer or less.

公开(公告)号：US12006461B2

公开(公告)日：2024-06-11

申请号：US17742365

申请日：2022-05-11

Applicant: Industrial Technology Research Institute

Inventor： Pao-Ju Hsieh ,  Mei-Chih Peng

IPC: C09K19/34 ,  C09D11/033 ,  C09K19/12 ,  C09K19/20 ,  C09K19/22 ,  C09K19/32 ,  C09K19/58 ,  H10K50/115 ,  B82Y15/00

CPC classification number: C09K19/3405 ,  C09D11/033 ,  C09K19/12 ,  C09K19/2007 ,  C09K19/22 ,  C09K19/322 ,  C09K19/586 ,  H10K50/115 ,  B82Y15/00 ,  C09K2019/122 ,  C09K2019/2035 ,  C09K2019/2085 ,  C09K2019/323 ,  C09K2019/3408

Abstract: Provided are a light color conversion material and a light color conversion ink. The light color conversion material includes a quantum dot and a cross-linkable cholesteric liquid crystal material. The cross-linkable cholesteric liquid crystal material encapsulates the quantum dot. The cross-linkable cholesteric liquid crystal material has Bragg diffraction characteristic after cross-linking, and blue light with a wavelength between 400 nm and 480 nm may be reflected by the cross-linked cholesteric liquid crystal material and transmitted through the cross-linked cholesteric liquid crystal material at the same time.

公开(公告)号：US20240174925A1

公开(公告)日：2024-05-30

申请号：US18281306

申请日：2022-03-10

Applicant: DIC Corporation

Inventor： Yuichi INOUE ,  Daiki NORO ,  Junichi MAMIYA

IPC: C09K19/58 ,  C09K19/14 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34 ,  C09K19/60

CPC classification number: C09K19/58 ,  C09K19/14 ,  C09K19/20 ,  C09K19/3001 ,  C09K19/3458 ,  C09K19/60

Abstract: An object of the present invention is to provide a dye compound-containing liquid crystal composition that has high solubility and high solubility retention for the dye compound and has high light resistance and a device including the composition. The use of a combination of one or two or more predetermined alkenyl compounds and a compound including a predetermined difluoro structure can provide a dye compound-containing liquid crystal composition that has high solubility and high solubility retention for the dye compound and has high light resistance, and the dye compound-containing liquid crystal composition is useful for devices, in particular, photochromic devices.

公开(公告)号：US20240110100A1

公开(公告)日：2024-04-04

申请号：US17949516

申请日：2022-09-21

Applicant: Antal Jakli ,  Chenrun Feng

Inventor： Antal Jakli ,  Chenrun Feng

IPC: C09K19/58 ,  C09K19/02

CPC classification number: C09K19/584 ,  C09K19/0225 ,  C09K2019/2078

Abstract: The present invention relates to a doped ferroelectric nematic liquid crystal having a chirality-induced stabilization of the polar nematic order, improved relaxation time for electro-optical switching, and selective reflection in the visible wavelength that is reversibly tunable. The ferroelectric nematic liquid crystal is doped with a chiral dopant selected from the group benzoic acid, 4-hexyl-,4-[[(1-methylheptyl)oxy]carbonyl]phenyl ester (ZLI811) and BDH1281.

公开(公告)号：US11834600B2

公开(公告)日：2023-12-05

申请号：US17670906

申请日：2022-02-14

Applicant: FUJIFILM Corporation

Inventor： Keisuke Kodama ,  Yuki Fukushima ,  Shunya Katoh ,  Yuta Takahashi ,  Shinpei Yoshida ,  Satoshi Yanokuchi ,  Akira Maruyama ,  Hiroyuki Hagio

IPC: C09K19/58 ,  G02B5/30 ,  H10K50/86 ,  C09K19/20

CPC classification number: C09K19/588 ,  C09K19/2007 ,  G02B5/3016 ,  H10K50/86 ,  C09K2019/2078

Abstract: Provided is a liquid crystal composition capable of forming an optically anisotropic layer, and method thereof, in which a variation in a twisted angle of liquid crystal compound in an in-plane direction is suppressed an optical film, and a circularly polarizing plate for an organic EL display. The liquid crystal composition contains a liquid crystal, optically active compound A which is a photosensitive optically active compound whose helical twisting power changes upon irradiation with light and has a molar absorption coefficient of 5,000 M−1·cm−1 or more with respect to light having a wavelength of 365 nm, and an optically active compound B having a molar absorption coefficient with respect to light having a wavelength of 365 nm smaller than the molar absorption coefficient of the optically active compound A, in which a mass content ratio of the optically active compound A to the liquid crystal compound is less than 0.01.

公开(公告)号：US11795398B2

公开(公告)日：2023-10-24

申请号：US17624721

申请日：2020-07-02

Applicant: MERCK PATENT GMBH

Inventor： Atsutaka Manabe ,  Constanze Brocke ,  Brigitte Schuler

IPC: G02F1/1333 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  C09K19/04 ,  G02F1/1362

CPC classification number: C09K19/3402 ,  C09K19/3491 ,  C09K19/54 ,  C09K19/586 ,  C09K2019/0466 ,  C09K2019/3422 ,  C09K2019/3425 ,  G02F1/1362

Abstract: The invention relates to a liquid-crystalline medium having a nematic phase comprising one or more compounds of formula X




wherein the parameters have the meaning given in the text, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type and to the use of the compounds of formula X for improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds, as well as to the compounds of formula X.

公开(公告)号：US20230061307A1

公开(公告)日：2023-03-02

申请号：US17415037

申请日：2019-12-17

Applicant: MERCK PATENT GMBH

Inventor： Atsutaka MANABE ,  Constanze BROCKE ,  Susan (Min Tzu) CHUANG ,  Sven Christian LAUT ,  Sabrina PFEIFFER ,  Ramin TAVAKOLI

IPC: C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  C07D333/76 ,  C07D307/91

Abstract: The invention relates to a liquid-crystalline medium having a nematic phase comprising one or more compounds of formula X wherein the parameters have the meaning given in the text, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type and to the use of the compounds of formula X for improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds, as well as to certain compounds of formula X, as specified in the text.

公开(公告)号：US20230004044A1

公开(公告)日：2023-01-05

申请号：US17850392

申请日：2022-06-27

Applicant: FUJIFILM Corporation

Inventor： Yuta FUKUSHIMA ,  Keisuke KODAMA ,  Yoshinori MAEDA ,  Akira MARUYAMA ,  Yuki NAKAMURA ,  Shunya KATOH ,  Yuta TAKAHASHI

IPC: G02F1/1335 ,  G02F1/1337 ,  G02B5/30 ,  C09D125/06 ,  C09D123/08 ,  C09K19/58 ,  C09K19/20 ,  C09K19/32

Abstract: Provided are an optical film, a circularly polarizing plate, and an image display apparatus in each of which the occurrence of cracks is suppressed in the obtained film in a case of being punched. The optical film includes a stretched resin film and a liquid crystal layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending along a direction in thickness, in which a δa value calculated using a three-dimensional solubility parameter of a resin in the stretched resin film is 8.0 MPa1/2 or less, the liquid crystal layer contains a cured substance of a polyfunctional compound having two or more polymerizable groups in one molecule, and an absolute value of a difference between the δa value calculated using the three-dimensional solubility parameter of the polyfunctional compound and the δa value calculated using the three-dimensional solubility parameter of the resin is 4.0 MPa1/2 or less.