A light valve containing ABX.sub.3 perovskite particles (200) suspended in a liquid suspension (300) that can control light transmittance is provided. The preferable ABX.sub.3 perovskite particles (200) are halide ABX.sub.3 perovskite particles wherein A is at least one of Cs.sup.+, CH.sub.3NH.sub.3.sup.+, and Rb.sup.+, B is at least one of Pb.sup.2+, Ge.sup.2+, and Sn.sup.2+, and X is at least one of Cl.sup., Br.sup., and I.sup.. Use of the light valve in the manufacture of a light control device and a method of controlling light transmittance by using the light valve are also provided.

A light valve containing ABX.sub.3 perovskite particles (200) suspended in a liquid suspension (300) that can control light transmittance is provided. The preferable ABX.sub.3 perovskite particles (200) are halide ABX.sub.3 perovskite particles wherein A is at least one of Cs.sup.+, CH.sub.3NH.sub.3.sup.+, and Rb.sup.+, B is at least one of Pb.sup.2+, Ge.sup.2+, and Sn.sup.2+, and X is at least one of Cl.sup., Br.sup., and I.sup.. Use of the light valve in the manufacture of a light control device and a method of controlling light transmittance by using the light valve are also provided.

A display panel including a first substrate, a second substrate, a display medium layer and a sealant is provided. The second substrate is assembled with the first substrate. The display medium layer is disposed between the first substrate and the second substrate. The sealant is disposed between the first substrate and the second substrate, surrounds the display medium layer and includes a continuous one-piece pattern, wherein the continuous one-piece pattern includes a first segment and a second segment, and a difference between a width of the first segment and a width of the second segment is greater than or equal to a third of the width of the second segment.

A system and method are disclosed of electrostatic alignment and surface assembly of photonic crystals for dynamic color exhibition. The method includes: dispersing a plurality of photonic crystal chains into a solution; placing the solution of the plurality of photonic crystal chains in a container; and assembling and aligning the plurality of photonic crystal chains in the solution by a local charge build up on a surface of the container to exhibit color.

An example fighting device has a luminaire and a driver circuit. The luminaire includes a variable electrokinetic optic that includes an electrokinetic fluid between a transparent substrate and a diffuser. The electrokinetic fluid includes a carrier fluid mixed with charged particles. The variable electrokinetic optic further includes a transparent substrate electrode and a diffuser electrode configured to generate an electric field in the electrokinetic fluid in response to a control voltage applied across the transparent substrate electrode and the transparent diffuser electrode. The electric field attracts the charged particles to adjust an effective birefringence of the variable electrokinetic optic. Increasing the effective birefringence increases an output beam angle of the emitted illumination lighting relative to an input beam angle. The driver circuit selectively controls the applied control voltage.

A display panel, a manufacturing method thereof and a display device are provided. The display panel includes an array substrate and a color filter substrate disposed oppositely. A light transmission medium layer is provided between the array substrate and the color filter substrate, the light transmission medium layer being made of graphene oxide.

A movable carrier auxiliary system includes a first transparent assembly, a second transparent assembly, an electro-optic medium layer, a transparent electrode, a reflective layer, a transparent conductive layer, an electrical connector, a control member, and an optical image capturing module. A gap is formed between the second transparent assembly and the first transparent assembly. The electro-optic medium layer is disposed in the gap. The transparent electrode is disposed between the first transparent assembly and the electro-optic medium layer. The electro-optic medium layer is disposed between the first transparent assembly and the at least one reflective layer. The transparent conductive layer is disposed between the electro-optic medium layer and the at least one reflective layer. The electrical connector is electrically connected to the electro-optic medium layer, and transmits an electrical energy to the electro-optic medium layer to change a transparency of the electro-optic medium layer.

A display panel, a driving method thereof, and a display device are described. The display panel includes a first substrate and a second substrate opposite to each other, and a light transmission control layer located between the first substrate and the second substrate. The light transmission control layer includes a first electrode on a side of the first substrate facing the second substrate, a second electrode on a side of the second substrate facing the first substrate, a dispersant between the first electrode and the second electrode, and opaque flake dispersions dispersed in the dispersant. The first electrode and the second electrode are configured to form an electric field to control an arrangement state of the flake dispersions in the dispersant.

An interlayer film structure (11) is used with being sandwiched between two transparent panels (12) and (13), and comprises a first light-modulating film (21) capable of switching between light transmission and light scattering, and a second light-modulating film (22) capable of adjusting a visible light transmittance, and the first and second light-modulating films (21) and (22) are arranged in a thickness direction.

An interlayer film structure (11) is used with being sandwiched between two transparent panels (12) and (13), and comprises a first light-modulating film (21) capable of switching between light transmission and light scattering, and a second light-modulating film (22) capable of adjusting a visible light transmittance, and the first and second light-modulating films (21) and (22) are arranged in a thickness direction.