An electro-optical unit for a volumetric display device is disclosed. The electro-optical unit includes first optical diffuser element including first substrate and second substrate, first electrode arranged on inner side of the first substrate and second electrode arranged on inner side of the second substrate, and first liquid crystal layer arranged between the first electrode and the second electrode; and a second optical diffuser element including third substrate and fourth substrate, third electrode arranged on inner side of third substrate and fourth electrode arranged on inner side of the fourth substrate, and second liquid crystal layer arranged between third electrode and fourth electrode. Further, the electro-optical unit includes a first transitional medium layer arranged between the first optical diffuser element and the second optical diffuser element, with a refractive index equivalent to a refractive index of one or more of the fourth substrate and the fifth substrate.

A display panel includes a first base substrate, a gate line and a data line, a thin film transistor disposed on the first base substrate, and electrically connected to the gate line and the data line, a first electrode electrically connected to the thin film transistor, a third electrode spaced apart from the first electrode in a plan view, a second electrode facing the first electrode and the third electrode, and entirely overlapping the data line in a first direction, and a liquid crystal layer disposed between the first and third electrodes and the second electrode.

The present application relates to a liquid crystal device. The liquid crystal device of the present application may realize a transparent white state, a transparent black state and a scattering state according to a level of an applied voltage at a fixed frequency. The liquid crystal device may be applied to, for example, a window of a vehicle, a smart window, a window protective film, a display, a light cutoff panel for a display, an active retarder for a 3D image display or a viewing angle controlling film.

The present application relates to a liquid crystal device. The liquid crystal device of the present application may realize a transparent white state, a transparent black state and a scattering state according to a frequency and/or level of an applied voltage. The liquid crystal device may be applied to, for example, a window of a vehicle, a smart window, a window protective film, a display, a light cutoff panel for a display, an active retarder for a 3D image display or a viewing angle controlling film.

An object is to provide: a transparent screen having high transparency in which a hot spot caused by transmitted light can be reduced; and an image display system in which visibility of a screen is excellent and a hot spot is reduced by using the transparent screen. The object is achieved by the transparent screen including: a dot array in which dots obtained by immobilizing a cholesteric liquid crystalline phase are two-dimensionally arranged; and a layer that is obtained by immobilizing a cholesteric liquid crystalline phase.

According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.

The present invention relates to a polymer containing scattering type VA liquid crystal device with very low hysteresis characteristics. The reduction of the hysteresis is achieved by providing a pretilt angle.

A privacy glazing structure may include an electrically controllable optically active material, such as a liquid crystal material, sandwiched between a flexible substrate and a rigid substrate. The flexible substrate and the rigid substrate may each have a conductive layer deposited on the surface facing the optically active material. The flexible substrate may be bonded about its perimeter to the rigid substrate and may be sufficiently flexible to conform to non-planarity of the rigid substrate. As a result, the flexible substrate may adopt the surface contour of the rigid substrate to maintain a uniform thickness of optically active material between the flexible substrate and the rigid substrate.

A color-changing light-adjusting liquid crystal device and a light-adjusting method may include a main liquid crystal and a dichroic dye, which may be filled between substrates disposed oppositely, in a non-powered state. The main liquid crystal may be subjected to a specific arrangement orientation under an induction of an alignment layer, in a powered state, and the main liquid crystal may be subjected to a reorientation. Dichroic dye molecules may be rotated along with the reorientation of the main liquid crystal so as to scatter incident light in a visible spectrum, convert a light-transmitting state into a light-scattering state at a macro level, and display a color of the dichroic dye in the main liquid crystal, thus implementing light adjustment. The color-changing light-adjusting liquid crystal device does not contain a polymer network, so that a polymerization process is not needed and a polymer aging is avoided.

A light control device includes: a light control element including first and second base members, first and second electrodes, a liquid crystal layer, and first and second terminals electrically connected to the first and second electrodes; and a drive circuit that applies a first drive voltage to the first terminal and applies a second drive voltage having a polarity different from that of the first drive voltage to the second terminal. The first drive voltage is set to a first voltage in a first period, is set to a second voltage lower than the first voltage in a second period, is set to a third voltage lower than the second voltage in a third period, and is set to a fourth voltage lower than the second voltage and higher than the third voltage in a fourth period.