C09K2019/521

Patterned liquid crystal alignment using ink-jet printed nanoparticles and use thereof to produce patterned, electro-optically addressable devices; ink-jet printable compositions

Ink-jet printable compositions including nanoparticles capped with a protective layer of hydrocarbon chains and a single solvent exhibiting a single evaporation rate and having a specifically defined viscosity and surface tension that result in uniform and printable alignment layers for liquid crystal materials. Patterned liquid crystal-containing cells are also disclosed including one or more layers including the same or different nanoparticles capped with a protective layer of hydrocarbon chains printed on a surface of a substrate or even another nanoparticle-containing layer. Methods for producing the cells are also disclosed, including the step of printing a pattern on one or more portions of a cell surface utilizing a composition comprising the capped nanoparticles. Devices including the cells are also disclosed.

Liquid crystalline polymer composition
11884795 · 2024-01-30 · ·

A compact camera module that contains a generally planar base on which is mounted a lens barrel is provided. The base, barrel, or both are molded from a polymer composition that includes a thermotropic liquid crystalline polymer and a plurality of mineral fibers (also known as whisker). The mineral fibers have a median width of from about 1 to about 35 micrometers and constitute from about 5 wt. % to about 60 wt. % of the polymer composition.

Solid foam comprising mesogenic ligand-functionalized nanoparticles and methods of making and using the same

Solid foam structures having multiple compartments comprising mesogenic ligand-functionalized nanoparticles are provided. Compositions that include these structures, as well as methods of making the structures are also provided. The structures, compositions and methods find use in a variety of applications, such as, photonics, luminescent coatings and multi-compartment encapsulation technologies.

HIGHLY TUNABLE MAGNETIC LIQUID CRYSTALS
20190377215 · 2019-12-12 ·

In various embodiments magnetically actuated liquid crystals are provided as well as method of manufacturing such, methods of using the liquid crystals and devices incorporating the liquid crystals. In one non-limiting embodiment the liquid crystals comprise Fe.sub.3O.sub.4 nanorods where the nanorods are coated with a silica coating.

Enhanced wavelength converting structure

The present disclosure provides an enhanced wavelength converting structure. The enhanced wavelength converting structure includes a first crosslinked cholesteric liquid crystal layer and a plurality of first quantum dots dispersed in the first crosslinked cholesteric liquid crystal layer. When a first light is incident into the enhanced wavelength converting structure, the plurality of first quantum dots are excited and emit a second light of a wavelength different from a wavelength of the first light, and the second light is toned up via multiple reflections in the first crosslinked cholesteric liquid crystal layer. The present disclosure further provides a luminescent film and a display backlighting unit.

BLACK LIQUID-CRYSTAL POLYMER FILM AND MULTILAYER BOARD
20190352565 · 2019-11-21 ·

A black liquid-crystal polymer film that contains a black pigment and a liquid crystal polymer and the black liquid-crystal polymer film has a lightness of 45 or less, a dielectric loss tangent of 0.0035 or less, a minimum dielectric breakdown strength of 60 kV/mm or more, and a maximum-to-minimum ratio of in-plane thermal linear expansion coefficient in the range of 1.0 to 2.5.

METHOD FOR FABRICATING MICRO-CELL STRUCTURES

A method for fabricating micro-cell structures is provided and has providing a liquid crystal mixture; performing a heating step on the liquid crystal mixture at a temperature ranging from 45 C. to 150 C., performing a heat induced phase separation step on the liquid crystal mixture at a thermal phase separation temperature for a thermal phase separation titre such that the liquid crystal mixture forms liquid crystal particles and a network light-curing adhesive, wherein the thermal phase separation temperature and the thermal phase separation time are determined by a changing rate of a bright area ratio of the liquid crystal mixture; and performing a photo-curing step on the liquid crystal mixture by emitting an ultraviolet light so that a plurality of micro-cell structures are formed. The micro-cell structures with different transparency are fabricated based on different values of the thermal phase separation temperature and the thermal phase separation time.

TEMPERATURE-CONTROLLED DIMMING FILM WITH A FUNCTION OF SHIELDING NEAR-INFRARED LIGHT AND PREPARATION METHOD THEREOF

The present invention relates to a temperature-controlled dimming film with a function of shielding near-infrared light, which comprises a polymer network skeleton and liquid crystal molecules, wherein the polymer network skeleton consists of a polymer-dispersed liquid crystal network structure and a polymer-stabilized liquid crystal network structure and comprises a polymer matrix with pores inside which polymer networks are vertically aligned; and the liquid crystal molecules are dispersed in the polymer network skeleton and have smectic (SmA)-cholesteric (N*) phase transition. Between the skeleton and the liquid crystal molecules, nanoparticles, having absorption at 800-3000 nm, are dispersed. In the invention, a stepwise polymerization method is utilized to construct a PD&SLC network structure between two substrates, which greatly improve the bonding strength between the two substrates and the heat insulation performance of the temperature-controlled liquid crystal dimming film.

PROGRAMMABLE NANOCOMPOSITES

A shape-programmable liquid crystal elastomer. The elastomer comprising cross-linked and polymerized nematic, isotropic monomers with carbon nanotubes that are organized into a plurality of voxels. Each voxel has a director orientation such that each voxel of the plurality has a first state according to the director orientation and a second state according to cross-linkages of the polymerized nematic monomers. The elastomer transitions between the first and second states with exposure to an electric field.

Compact Camera Module
20190264001 · 2019-08-29 ·

A compact camera module that contains a generally planar base on which is mounted a lens barrel is provided. The base, barrel, or both are molded from a polymer composition that includes a thermotropic liquid crystalline polymer and a plurality of mineral fibers (also known as whisker). The mineral fibers have a median width of from about 1 to about 35 micrometers and constitute from about 5 wt. % to about 60 wt. % of the polymer composition.