Abstract: A diffraction-limited, programmable pulse shaping network using a virtually integrated phased array (VIPA)-grating pair, integrated with a 2-d transmissive phase-only spatial light modulator (SLM) and a retro-array phase-conjugate mirror (RA-PCM). A high-temporal resolution, broadband pulse shaping network is realized using a 2-D VIPA-grating dispersive element pair, with a programmable SLM at a common Fourier transform plane. True wavefront reversal (“time reversal”) is realized using a self-starting RA-PCM, which compensates for system path distortions, misalignment, beam wander, vibrations and optical aberrations. Upon reverse transit through the system, the RA-PCM wavefront matches the set of virtual images emerging from the VIPA. The RA-PCM is a self-starting, low-power device, without frequency shifts, doesn't require pump beams and/or the need for high-intensity stimulated scattering threshold conditions to be met.

Abstract: A switchable light transmission module is disclosed that includes a substrate having a first surface defining at least part of an enclosed volume, a porous layer disposed on the first surface and in fluid communication with the enclosed volume, and a reservoir in fluid communication with the enclosed volume. The reservoir is configured to supply a fluid to the sealed volume such that the fluid contacts the porous layer. The fluid has a refractive index that is close to the refractive index of the porous layer, has a high wettability for the porous layer, and does not dissolve the porous layer. When in a dry state, voids in the porous layer are filled with air which has a much different refractive index than the porous layer itself, resulting in a surface that is reflective and not very transmissive.

Abstract: Provided is an array substrate. The array substrate includes: a base substrate, and a plurality of gate lines, a plurality of data lines, a plurality of sub-pixels and a plurality of touch signal lines disposed on the base substrate. The data lines have a plurality of first extending parts and a plurality of second extending parts which are in an alternating arrangement. When the array substrate is used to prepare a liquid crystal display panel and the liquid crystal display panel is displaying, in each column of the sub-pixels, the voltage polarities of the two adjacent sub-pixels which respectively belong to two adjacent first pixel regions are opposite.

Abstract: Disclosed is a display panel including: first spacer on the array substrate, an orthographic projection of the first spacer on the array substrate being a first pattern extending along a first direction; a second spacer on the counter substrate, an orthographic projection of the second spacer on the array substrate being a second pattern extending along a second direction; at least two third spacers, orthographic projections of which on the array substrate being respectively on two sides of the first pattern along the first direction; at least two fourth spacers, orthographic projections of which on the array substrate being respectively on two sides of the second pattern along the second direction; one of the third spacer and the fourth spacer is on the array substrate, and the other is on the counter substrate.

Abstract: A dielectric grating apparatus comprises a substrate; a grating layer, disposed above the substrate; a first interference layer, disposed above the substrate; and a second interference layer, adjacent to the first interference layer, wherein a refractive index of a material of the second interference layer is greater than a refractive index of a material of the first interference layer.

Abstract: An active metasurface that provides low-loss and high-bandwidth modulation control of light includes a number of cells arranged on a substrate. A controller dynamically alters a voltage differential supplied to the electrodes of each of the cells is adapted to alter refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.

Abstract: Stable, macroscopic single-crystal chiral liquid crystal compositions are described. The compositions include a single-crystal chiral liquid crystal material on a patterned surface. The patterned surface seeds a particular crystallographic orientation at the substrate-liquid crystal interface. Also described are methods of forming the single-crystal chiral liquid crystal compositions.

Abstract: A color film structure includes a black matrix, a color film layer and a reflective layer. The black matrix has a plurality of openings. The color film layer includes a plurality of filter portions, and at least a portion of each filter portion is located in an opening of the black matrix. The reflective layer is located on a side of the black matrix configured to be proximate to a light-emitting substrate, and an orthographic projection of the reflective layer on a plane where the black matrix is located is covered by the black matrix. The reflective layer is configured to reflect at least a part of light emitted from the light-emitting substrate to the black matrix back to the light-emitting substrate, so that at least a part of the light reflected back to the light-emitting substrate is emitted through the color film layer.

Abstract: The present disclosure describes photonic materials that reversibly change color in response to the material being stretched or otherwise mechanically deformed.

Abstract: An active metasurface that provides low-loss and high-bandwidth modulation control of light includes a number of cells arranged on a substrate. A controller dynamically alters a voltage differential supplied to the electrodes of each of the cells is adapted to alter refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.

Abstract: The disclosure provides a display substrate, a display panel and a display device. The display substrate has a display area and a peripheral area surrounding the display area, and includes: a first base; multiple pixel units in the display area and on the first base, each pixel units includes a thin film transistor and a first electrode, in each pixel unit, a second electrode of the thin film transistor is electrically coupled with the first electrode through a first via hole penetrating through an interlayer insulating layer; and an auxiliary functional layer located in the display area and on a side, away from the first base, of the first electrode; an orthographic projection of the auxiliary functional layer on the first base covers at least a part of an orthographic projection of the first via hole on the first base, and defines an active display area of each first electrode.

Abstract: The present application provides a color filter substrate, an array substrate and a display panel. A first dielectric grating layer in the color filter substrate is stacked with a first dielectric layer, and ridges and grooves are arranged at intervals periodically on one side of the first dielectric grating layer away from the first dielectric layer; a first polarizing layer in the color filter substrate is located in the grooves of the first dielectric grating layer; a second polarizing layer in the color filter substrate is located on the ridges of the first dielectric grating layer.

Abstract: A plasmonic device incorporating a special hyperbolic metamaterial (HMM) metamaterial is used for plasmonic lithography, including ultraviolet (UV) lithography. It may be a Type II HMM (??<0 and ??>0) whose tangential component of the permittivity ?? is close to zero. Due to the high anisotropy of the Type II epsilon near zero (ENZ) HMM, only one plasmonic mode can propagate horizontally with low loss in a waveguide system with ENZ HMM as its core. In certain aspects, a Type II ENZ HMM comprises alternating layers of aluminum/aluminum oxide films and the associated unusual mode of light transmission is used to expose a photosensitive layer in a specially designed lithography system. Methods for making patterns of nanofeatures via such plasmonic lithography are also provided, including as a plasmonic roller device.

Abstract: The present application provides a liquid crystal display panel and a liquid crystal display device. In the liquid crystal display panel, a light-shielding pattern is disposed on a side of a first substrate away from a liquid crystal layer, and the light-shielding pattern is disposed between two adjacent pixels. A difference between a width of the light-shielding pattern and a distance between the two adjacent pixels is less than or equal to a threshold value. A material of the light-shielding pattern includes an inorganic material. Therefore, an aperture ratio of the liquid crystal display panel is increased.

Abstract: An optical stack includes: a light scattering film converting light received at a light receiving surface into scattering light therein and then outputting the scattering light outside from a light output surface, and a sheet provided on the light output surface side of the light scattering film. The light scattering film includes: a functional layer formed of a light-transmissive composition including an organic polymer compound and light scattering particles. The functional layer includes a first surface receiving the light and a second surface from which the scattering light is output. The functional layer includes a particle layer formed of light scattering particles having a content of 60% by volume or higher among the light scattering particles, the particle layer expanding along the first surface and being concentrated in a direction perpendicular to the first surface.

Abstract: A tunable-liquid-crystal-grating-based holographic true 3D display system comprises a laser, a filter, a beam expander, a semi-transparent semi-reflective mirror, a spatial light modulator, a lens I, a diaphragm, a tunable liquid crystal grating, a polaroid, a signal controller, a lens II and a receiving screen. The laser, the filter and the beam expander are used for generating collimated incident light. The spatial light modulator is loaded with a hologram of a 3D object. The diaphragm is positioned behind the lens I for eliminating a high-order diffracted light in the holographic true 3D display. The tunable liquid crystal grating is located on the back focal plane of the lens I and on the front focal plane of the lens II, and the signal controller is used for synchronously controlling the voltage of the tunable liquid crystal grating and the generation and loading of the hologram.

Abstract: A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.

Abstract: According to one embodiment, a display device including a first substrate including a first pixel and a second pixel, a second substrate, a liquid crystal layer containing polymer and liquid crystal molecules, and a light emitting element, wherein the second pixel is located between the light emitting element and the first pixel, the first substrate includes a switching element including a semiconductor layer arranged in the first pixel, a pixel electrode, and a first light shielding portion arranged in the second pixel and being adjacent to the semiconductor layer, the first light shielding portion is located between the semiconductor layer and the light emitting element in planar view and located on a side closer to the first pixel than a center of the second pixel.

Abstract: Provided are a spectral filter, a method of manufacturing the same, and an image sensor and an electronic device each including the spectral filter. The spectral filter includes a plurality of first reflective layers provided spaced apart from each other, and a plurality of cavities provided between the plurality of first reflective layers. The cavities have different thicknesses according to a center wavelength. Each of the cavities includes a plurality of etch stop layers having a constant total thickness according to the center wavelength, and at least one dielectric layer having a total thickness which changes according to the center wavelength, wherein the etch stop layers include materials having etch selectivities different than that of the dielectric layer.

Abstract: A multilayer optical element comprises a plurality of layers arranged along an optical axis, each layer having a plurality of nanostructures, wherein a size of—, and a spacing between—, the nanostructures is selected to provide a resonant response to an optical field at different wavelengths for different layers.