Configurable optical device comprising an optical element (1) or various optical elements (1) arranged in series, wherein each element (1) comprises an active region (2) with an entry surface (21) and an exit surface (22) for light beams, and a perimeter (3); each element (1) comprising at least one first transparent electrode (4) and at least one transparent counter electrode (5) the corresponding electrical connections being located in the perimeter (3); the device being configured such that, upon application of a potential difference between electrodes (4, 5) of each element (1), an electric field that alters the degree of commutation in different regions of the active zone (2) of each element (1) is generated, thus creating a varying optical path profile in each element (1), which allows an incident light beam to be focused in different ways, depending on the electric field applied to each electrode.

A display device includes a liquid crystal display operable to selectively transmit light. The display device also includes a switchable mirror that is operable to switch from a pellucid state to a reflective state. The liquid crystal display includes a liquid crystal layer disposed between a first substrate and a second substrate. To preserve color integrity, a color filter and a switchable mirror is also disposed between the first substrate and the second substrate.

A tunable parametric mixer comprising a pump laser, a nonlinear waveguide, and a refractive index tuner. The pump laser is configured to generate pump photons. The nonlinear waveguide comprises a cladding and a core. The core is made of nonlinear optical material and the cladding in made of a material with a tunable index of refraction. The nonlinear waveguide is configured to convert the pump photons into signal and idler photons. The refractive index tuner is configured to change the refractive index of the cladding to dynamically tune the dispersion properties of the nonlinear waveguide in order to alter a spectral location of a gain band of the parametric mixer.

A display panel includes a plurality of sub-pixels. At least one sub-pixel of the plurality of sub-pixels includes a first electrode, a light modulation structure disposed on a side of the first electrode, and a second electrode disposed at a side of the light modulation structure away from the first electrode. The light modulation structure includes a refractive index adjustment layer, and a light modulation layer disposed between the refractive index adjustment layer and the first electrode. A refractive index of the refractive index adjustment layer is changed under action of an electric field between the first electrode and the second electrode. The light modulation layer is in contact with the refractive index adjustment layer, and at least a part of a surface of the light modulation layer that is in contact with the refractive index adjustment layer is a curved face.

The embodiment of the present invention discloses a transflective liquid crystal panel, a method of manufacturing the transflective liquid crystal panel, a transflective display device, and a method of controlling displaying of the transflective display device to solve the technical problems that the process for fabricating the reflection layer is complicated, the metal film of the reflection layer will cause electrostatic charges to be accumulated, and the surface of the reflection layer has an uneven concavo-convex shape so that the orientation of the liquid crystal molecules in the reflection region is adversely affected. The transflective liquid crystal panel comprises pixel units arranged in a matrix, a transmission region and a reflection region disposed in each pixel unit, and a reflection layer disposed in the reflection region. The reflection layer includes an electronic ink layer.

A display includes a display modulation layer, a backlight unit configured to generate light for illumination of the display modulation layer, and a filter film disposed between the backlight unit and the display modulation layer. The filter film includes a plurality of Bragg grating sets. Each Bragg grating set is configured to reflect the light in a wavelength-selective and angular-selective manner rearward toward the backlight unit.

Embodiments of the present application provide an array substrate and manufacturing method thereof, and a display panel, display device, display kit. The array substrate includes: a base substrate, and a reflective layer on a side of the base substrate; the reflective layer includes: a plurality of micro-capsules; each of the micro-capsules includes: a plurality of absorbing particles and a plurality of reflecting particles; the absorbing particles are magnetic particles absorbing light; the reflecting particles are non-magnetic particles reflecting light.

A light emitting element display device can be used for light therapy. The device includes: a display panel including a plurality of light emitting elements; a retarder plate configured to convert light emitted from the plurality of light emitting elements into circularly polarized light; and a selective polarizer configured to selectively convert light supplied from the retarder plate into linearly polarized light or allow penetration of the light.

A color filter substrate, a display panel and a display device arc provided. The color filter substrate includes a base substrate, the base substrate being divided into a plurality of pixel units, each pixel unit including a plurality of sub-pixel units, a color filter being arranged in each sub-pixel unit. At least one color filter of the plurality of sub-pixel units in each of the pixel units is made of an electrochromic material

A display screen is disclosed. The display screen comprises a light source layer, configured to be in an “on” state for providing a display light source corresponding to a first display mode, when the display screen is in the first display mode, and to be in an “off” state when the display screen is in a second display mode different from the first display mode; a liquid crystal layer, disposed in front of the light source layer; a polarizer, disposed in front of the liquid crystal layer; and a control unit, in connection with the liquid crystal layer and configured to control the liquid crystal layer. An electronic device is also disclosed, including the above described display screen and a method for processing information of the electronic device.