A geometric phase optical element and a three-dimensional display apparatus including the same are provided. The geometric phase optical element includes: a liquid crystal layer; a first electrode on a surface of the liquid crystal layer; and a second electrode on another surface of the liquid crystal layer, wherein, when no voltage is applied to the first and second electrodes, the liquid crystal layer is configured such that a phase difference according to an arrangement of the liquid crystal is π and light transmitted through the liquid crystal layer is diffracted by a first deflection angle, and when a first voltage that causes the phase difference according to the arrangement of the liquid crystal to become π/2 is applied to the first and second electrodes, the liquid crystal layer is configured such that the light transmitted through the liquid crystal layer is diffracted by a second deflection angle.

In a display assistant device, a speaker is mounted in a waveguide structure which is at least partially disposed beneath a display screen. The waveguide structure is mounted in an exterior housing which includes speaker grills distributed on a plurality of surfaces of the exterior housing, permitting sound waves from the speaker to be projected outside the exterior housing. A cover structure is disposed on top of the waveguide structure to conceal the waveguide structure and speaker within the exterior housing. The cover structure has a tilted bottom surface configured to be suspended above the waveguide structure and to be separated by a first space. Sound waves projected from an upper portion of the speaker are reflected by the tilted bottom surface and are guided through the first space to exit the device from a speaker grill portion located on a rear side of the exterior housing.

A system includes a diffractive optical element configured to receive a first beam and a second beam interfering with one another to generate a first interference pattern. The diffractive optical element is also configured to forwardly diffract the first beam and the second beam to output a third beam and a fourth beam. The third beam and the fourth beam interfere with one another to generate a second interference pattern. The system also includes a detector configured to detect the second interference pattern.

A spatial light modulator for suppressing a fringe field effect includes: a transparent electrode layer; a reflective electrode layer including a pixel electrode, in which a pixel area is surrounded by a boundary of the pixel electrode; a liquid crystal layer located between the transparent electrode layer and the reflective electrode layer to establish a pixel formed by the liquid crystal layer covering the pixel area in the pixel electrode; and an alignment film having a first pattern and a second pattern and covering the pixel area. The first pattern and the second pattern in the pixel area make liquid crystals in the liquid crystal layer of the pixel generate arrangements of a first azimuth angle and a second azimuth angle, respectively, and the first azimuth angle is different from the second azimuth angle.

A display panel for displaying an image is provided with a plurality of pixels arranged in a matrix. Each pixel includes one or more units each including a purality of subunits. Each subunit includes a transistor in which an oxide semiconductor layer which is provided so as to overlap a gate electrode with a gate insulating layer interposed therebetween, a pixel electrode which drives liquid crystal connected to a source or a drain of the transistor, a counter electrode which is provided so as to face the pixel electrode, and a liquid crystal layer provided between the pixel electrode and the counter electrode. In the display panel, a transistor whose off current is lower than 10 zA/.Math.m at room termperature per micrometer of the channel width and off current of the transistor at 85° C. can be lower than 100 zA/.Math.m per micrometer in the channel width.

A vertical alignment liquid crystal display module including a vertical alignment liquid crystal display panel and an image color switch film is provided. The image color switch film is disposed on the vertical alignment liquid crystal display panel. In various viewing angle directions having included angles of 60 degrees to 75 degrees with respect to a normal of the image color switch film, the image color switch film has a following optical characteristic: an average transmittance of a visible light transmittance spectrum of the image color switch film at an end of short wavelength is less than an average transmittance of the visible light transmittance spectrum of the image color switch film at an end of long wavelength.

A method is disclosed for realizing a liquid crystal tri-dimensional aligned structure, including: providing a first substrate having a first surface; forming a liquid crystal layer in contact to said first surface, said liquid crystal layer including a polymerizable liquid crystal compound; realizing a first aligning formation within said liquid crystal layer by irradiating a first portion of said liquid crystal layer with electromagnetic or electron beam radiation according to a given first pattern, so that said first portion of liquid crystal compound becomes polymerized and said first aligning formation is made of said polymerized liquid crystal compound according to said given first pattern, said first aligning structure defining a first aligning axis; locally orienting optical axes of molecules of said liquid crystal layer along said first aligning axis.

A display panel and a manufacturing method therefor, a drive method and a display device. The display panel includes a first substrate and a second substrate which are arranged opposite to each other. The first substrate includes a first base substrate, and a plurality of first wire grid polarizers and a plurality of pixel units, which are successively located on a side of the first base substrate facing the second substrate in an array arrangement; polarization directions of two adjacent first wire grid polarizers are perpendicular to each other. The second substrate includes: a second base substrate, and a plurality of second wire grid polarizers in an array arrangement which are located on a side of the second base substrate facing the first substrate, and polarization directions of two adjacent second wire grid polarizers are perpendicular to each other.

A liquid crystal pixel structure is disclosed. The liquid crystal pixel structure includes: a pixel electrode, located in a pixel aperture. The pixel electrode has two or more display domains applied with the same voltage level. The pixel electrode extends in different directions in the display domains. A gate line is located at an intersection of the display domains. An edge of the intersection of the display domains overlaps the gate line. A data line is located at an edge of the pixel aperture. The pixel electrode is controlled by the gate line and the data line via a transistor. The aperture of the pixel structure is divided by the gate lines. Therefore, the edge of the display domains overlaps the gate lines. The dark line can be covered by the gate lines and thus the aperture rate and the transparent rate can be raised.

The present disclosure discloses a viewing angle compensation method and apparatus for a display panel, and the display panel, and relates to the technical field of liquid crystal displaying. The purpose of increasing a visual angle of an MVA liquid crystal panel can be achieved, and for a whitening phenomenon of a screen watched at a side viewing angle, a better improving effect can be given. A main technical solution of the present disclosure includes: receiving to-be-processed image data, the image data including pixel points formed in a plurality of rows and a plurality of columns, and each pixel point having different subpixels on red, green and blue three-color channels; adjusting current gray-scale values of the subpixels by looking up a preset visual compensation lookup table to obtain adjusted gray-scale values, the preset visual compensation lookup table including two corresponding gamma curves, and the two corresponding gamma curves being used for describing corresponding adjustable ranges of the gray-scale values; and acquiring first target image data as output target image data according to the adjusted gray-scale values corresponding to the subpixels.