Disclosed is an optical assembly having a first variable transmission layer comprising a first electro-optically active material between a first pair of substrates, a second variable transmission layer comprising a second electro-optically active material between a second pair of substrates, and an electronically switchable birefringent layer, that is capable of altering the phase of incident light, situated between the first and second variable transmission layers. The layers are arranged such that light passing through the optical assembly can be altered based on the voltage applied to each layer. The light transmission levels can be altered between maximally transmissive, minimally transmissive, and semi-transparent levels between the maximally and minimally transmissive levels.

The present disclosure is directed to providing to a smart window system capable of controlling a state of a display element (e.g., at least one of transparency, color, pattern, gradation degree, and displayed information) through various kinds of input devices and a control method thereof. In accordance with one aspect of the present disclosure, a smart window system may include a display element; an input device configured to receive a control command for the display element; and a controller configured to determine at least one of transparency, color, pattern, and gradation of the display element and information displayed on the display element on the basis of the control command.

A light modulating device is disclosed herein. In some embodiments, a light modulating device includes a first substrate having a first surface, a pressure-sensitive adhesive layer or an adhesive layer formed on the first surface of the first substrate, a second substrate, a liquid crystal layer disposed between the first and second substrates; and a partition wall spacer, wherein the partition wall spacer maintains a distance between the first and second substrates, wherein the liquid crystal layer is capable of being configured in a twist orientation, and wherein a ratio of thickness of the liquid crystal layer relative to a pitch of the liquid crystal layer in the twist orientation is more than 2.8 and 10 or less. The light modulating device can have a wide transmittance variable range and does not have problems, such as liquid crystal defects or visibility deterioration, while implementing low transmittance in a black mode.

Disclosed are a reflective display substrate and a method for fabricating the same, a display panel, and a display device. The reflective display substrate includes a base substrate and a resonant cavity layer. The base substrate has a plurality of pixel regions. The resonant cavity layer is disposed on a first side of the base substrate. The resonant cavity layer includes a plurality of resonant cavities. The plurality of resonant cavities are in one-to-one correspondence with the plurality of pixel regions. The resonant cavity is disposed in the corresponding pixel region. The resonant cavity is configured to enhance reflection of light of a first color in incident light and reduce reflection of light of a second color in the incident light.

A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state when a voltage is applied, and a polarizer, wherein each of the first and second polymer film substrates have in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.

A device having variable scattering by liquid crystals includes a stack with a first electrode, an electroactive layer with liquid crystals being stabilized by the polymeric network, and a second electrode. The material exhibits, from a temperature referred to as T1, a mesophase referred to as P. At a temperature T′ greater than or equal to T1, the stack is capable of exhibiting at least three stable and reversible scattering states in the visible range and a variable color.

A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, a reflective layer, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state different from the first orientation state upon application of a voltage, each of the polymer film substrates has an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.

A light modulating device including: a light transmissive plate having a curved surface; a light modulating cell; and an optically transparent adhesive film which is disposed between the curved surface of the light transmissive plate and the light modulating cell and attaches one side of the light modulating cell to the curved surface of the light transmissive plate.

The present invention relates to an anthraquinone compound represented by formula (1) (in formula (1), R1 represents a C 1-9 alkyl group and R2 represents a C 1-8 alkyl group.); a yellow dichroic pigment that includes this compound: a liquid crystal composition for light control that contains this yellow dichroic pigment and a liquid crystal material: and a light control element that uses this composition.

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The present disclosure provides a light-adjusting glass and a manufacturing method thereof, and a glass assembly, and belongs to the field of display glass technology. The light-adjusting glass of the present disclosure includes at least one light-adjusting module; the light-adjusting module includes a first substrate and a second substrate opposite to each other, and a dye liquid crystal layer between the first substrate and the second substrate; wherein liquid crystal molecules in the dye liquid crystal layer deflect under a control of an electric field between the first substrate and the second substrate, to control a transmittance of light; wherein the dye liquid crystal layer includes a polymer network, which is configured such that when the electric field between the first substrate and the second substrate changes, twisting degrees of the liquid crystal molecules are identical, and twisting degrees of dye molecules are identical.