Abstract: A fluid detection panel is disclosed. The fluid detection panel includes a microfluidic substrate, an optical unit and a sensor. The microfluidic substrate includes a sample detection area and a comparison detection area which are arranged in parallel, and the sample detection area is configured to allow a liquid sample to arrive at the sample detection area; the optical unit is configured to provide first light and to allow the first light to be incident on both of the sample detection area and the comparison detection area; and the sensor collects the first light which passes through the sample detection area and the first light which passes through the comparison detection area.

Abstract: The present disclosure relates to a display panel. The display panel includes: a light guide member, a light extraction member and a modulation member sequentially arranged along a first direction; and wherein the light extraction member is configured to extract light propagating within the light guide member in a collimated manner to one side of the light extraction member away from the light guide member, and the modulation member is configured to modulate a reflectance and transmittance of the light extracted in a collimated manner by the light extraction member within the modulation member.

Abstract: The present application discloses a liquid crystal display apparatus and a fabricating method thereof, a back light and a fabricating method thereof. The liquid crystal display apparatus includes a base substrate; a liquid crystal layer; and an anisotropic grating on a side of the liquid crystal layer distal to the base substrate. The anisotropic grating includes a plurality of barriers and a plurality of slits arranged alternately. The anisotropic grating is configured to separate incident light into light of a first color, light of a second color, and light of a third color, and configured to emit the light of the first color, the light of the second color, and the light of the third color at different exit angles, respectively.

Abstract: A three-dimensional display apparatus providing a plurality of view points at a view zone includes a directional display structure including a plurality of first sub-pixels configured to display a plurality of first sub-images, and a plurality of second sub-pixels configured to display a plurality of second sub-images; a plurality of grating structures including a plurality of first grating structures configured to perform diffraction of light such that the first sub-images are directionally transmitted, and a plurality of second grating structures configured to perform diffraction of light such that the second sub-images are directionally transmitted; a reflector between the directional display structure and the view zone reflecting the first sub-images being directionally transmitted to a first view point and the second sub-images being directionally transmitted to a second view point, thereby displaying a three-dimensional image.

Abstract: A microfluidic apparatus is provided. The microfluidic apparatus includes a first substrate having a first side and a second side opposite to each other; a grating layer on the second side of the first substrate, the grating layer including a plurality of grating blocks of different wavelength selectivity; a second substrate having a third side and a fourth side opposite to each other; the fourth side of the second substrate on a side of the third side away from the first substrate, and the second side of the first substrate on a side of the first side away from the second substrate; a light detection layer on the third side of the second substrate, the light detection layer including a plurality of detectors; and a microfluidic layer between the first substrate and the light detection layer, the microfluidic layer including a plurality of microfluidic channels.

Abstract: A display device and a method for controlling the display device are disclosed. The display device includes a backlight module and a liquid crystal cell on a light emitting side of the backlight module. The liquid crystal cell includes a first electrode, a second electrode disposed in a first direction opposite to the first electrode, a liquid crystal layer between the first electrode and the second electrode, and a diffractive optical element in the liquid crystal layer. A refractive index of the diffractive optical element is equal to a short-axis refractive index of a liquid crystal in the liquid crystal layer. The liquid crystal cell is divided into a first portion where the liquid crystal molecules are capable of rotating in a first plane and a second portion in a second direction perpendicular to the first direction where liquid crystal molecules are capable of rotating in a first plane.

Abstract: A backlight module, a method for manufacturing the same, and a liquid crystal display device, which realize a thin uniform backlight for liquid crystal display. The backlight module includes: a light guide plate including a light exit surface and a bottom surface opposite to the light exit surface; the bottom surface including an array of inverted pyramid grooves; and a plurality of point light sources located on a side of the light exit surface away from the bottom surface; wherein a light emitting surface of each point light source faces the light exit surface.

Abstract: An optical switch includes a plurality of micro-grooves, a micro-fluid disposed in each micro-groove of the plurality of micro-grooves, and a driving electrode disposed corresponding to the micro-fluid in each micro-groove. The driving electrode is configured to provide a voltage to a corresponding micro-fluid to control light transmittance of a region where the micro-fluid is located.

Abstract: The present disclosure relates to a multifocal lens. The multifocal lens may include N liquid crystal panels in a stacked manner. The N liquid crystal panels may include an n-th liquid crystal panel, and the n-th liquid crystal panel may include an n-th converging element having an n-th focal length. N is a positive integer greater than or equal to 2, n is a positive integer, and 1?n?N. The n-th liquid crystal panel may be configured to be switchable between a converging state and a non-converging state. The N liquid crystal panels may be configured to make the multifocal lens to have switchable CN1+CN2+CN3+ . . . +CNN focal lengths, and the CN1+CN2+CN3+ . . . +CNN focal lengths are all different from one another.

Abstract: The present disclosure relates to a display panel and a display device. The display panel includes: a beam splitting member disposed between a light extracting member and a liquid crystal layer, for splitting the light extracted from the light extracting member into linearly polarized lights with polarization directions perpendicular to each other; and a modulating member disposed on a side of the beam splitting member away from the light extracting member, for modulating the linearly polarized light that is incident from the beam splitting member into the liquid crystal layer.

Abstract: The present disclosure provides a backlight module and a display device. The backlight module includes a tight source layer, a light guiding layer and a dotted layer, a plurality of light emitting units is arranged on the light source layer; a plurality of reflective prism units is arranged on one side of the light guiding layer away from the light source layer, and positions of the plurality of reflective prism units are corresponding to the plurality of light emitting units respectively; the reflective prism unit is configured to reflect a light emitted by the light emitting unit into the light guiding layer and cause total reflection of the reflected light within the light guiding layer; and an optical structure for extracting light from the light guiding layer is provided with the dotted layer.

Abstract: A display panel and a display device are provided. The display panel includes: a lower substrate and an upper substrate cell-assembled together; a light-emitting control layer disposed between the lower substrate and the upper substrate; and a plurality of pixel units defined by a plurality of data lines and gate lines intersected with each other. Each pixel unit includes a plurality of subpixel areas. One or more side surfaces of the lower substrate are configured to receive incidence of the collimated light. The light-emitting control layer is configured to control the light-emitting directions and the light-emitting colors of the subpixel areas, to allow the light-emitting directions of the subpixel areas toward the central portion of the display panel. The light-emitting control layer is also configured to control the display grayscale of the subpixel areas.

Abstract: A display device and a display method thereof are provided. The display device includes: a first base substrate (10) and a second base substrate (20) which are arranged oppositely and a liquid crystal layer (30) between the first base substrate (10) and the second base substrate (20), the display device further includes: a waveguide grating (40) between the liquid crystal layer (30) and the first base substrate (10), the waveguide grating (40) including a waveguide layer (401) and a grating layer (402) on one side of the waveguide layer (401) facing the liquid crystal layer (30), and the grating layer (402) being in contact with the liquid crystal layer (30); and a collimation light source (50) on a lateral surface of the waveguide layer (401), light emitted by the collimation light source (50) being coupled into the waveguide layer (401) and output from the grating layer (402).

Abstract: The present disclosure provides an optical device, a module, an apparatus and a system for fingerprint identification. The optical device includes: a first lens array including a plurality of first lenses; a second lens array opposite to the first lens array, including a plurality of second lenses; and a light shielding element between the first lens array and the second lens array, the light shielding element including a plurality of light-transmitting apertures. Image focal planes of the plurality of second lenses, object focal planes of the plurality of first lenses, and the light shielding element are coplanar. The plurality of first lenses are in one-to-one correspondence with the plurality of second lenses and the plurality of light-transmitting apertures, respectively.

Abstract: A backlight module is provided. The backlight module includes a light guide plate; a plurality of reflective gratings on a first side of the light guide plate; and a plurality of reflectors on a second side of the light guide plate. A respective one of the plurality of reflective gratings is configured to diffract and reflect a portion of light totally reflected in the light guide plate into diffracted light transmitting across the light guide plate from the first side toward the second side. A portion of the diffracted light has a respective wavelength range to be received by a respective reflector. The respective one of the plurality of reflectors is configured to reflect the portion of the diffracted light having the respective wavelength range transmitting from the second side toward the first side to a position between the respective grating and an adjacent reflective grating.

Abstract: A variable diaphragm and a control method thereof are provided.

Abstract: A light guide structure is disclosed. The light guide structure includes a first waveguide layer having a first light incident surface and a first light exiting surface. The light guide structure includes a polarization beam-splitting structure on the first light exiting surface, configured to split light into first polarized light and second polarized light. The light guide structure includes a first polarization coupling grating disposed on the first light incident surface and configured to deflect the first polarized light, and a second waveguide layer having a second light incident surface and a second light exiting surface and disposed on the polarization beam-splitting structure. The light guide structure includes a second polarization coupling grating disposed between the second light incident surface and the polarization beam-splitting structure and configured to deflect the second polarized light.

Abstract: The present disclosure provides a display panel and a display device. The display panel includes a base substrate and light-shielding strips. The base substrate includes light-shielding regions and light-transmitting regions. The display panel further includes a backlight module including a light guide plate and light extraction gratings. The display panel further includes a first electrode layer, a second electrode layer, and a liquid crystal layer. The first and second electrode layers are configured to, in response to a control signal, control the liquid crystal layer to forms a plurality of liquid crystal grating periods. The liquid crystal within each of the plurality of liquid crystal grating periods includes a plurality of segments with different refractive indices, and the refractive indices of the plurality of segments progressively increase in a direction perpendicular to an extending direction of the first electrodes in the first electrode layer.

Abstract: A near-eye display apparatus includes a pixel island configured to emit first light, and a combined micro lens disposed at a light exit side of the pixel island. The combined micro lens includes an additional micro lens and a first micro lens. The additional micro lens is configured to diverge the first light emitted by the pixel island. The first micro lens is disposed at a side of the additional micro lens away from the pixel island, and is configured to collimate light passed through the additional micro lens. The pixel island is disposed on a focal plane of the combined micro lens.

Abstract: The present disclosure provides a collimation backlight source, a display device and a driving method thereof. The collimation backlight source includes a light guide plate, a plurality of light sources of different colors, and a light-extraction grating assembly in each light-extraction region on the surface of the light guide plate.