A protective film, a method for fabricating the same, and a display device are provided. The protective film is configured to be applied to a self-luminous display panel. The protective film includes a quantum dot color conversion layer, a first base substrate, a polymer dispersed liquid crystal layer, and a second base substrate. Scattering of liquid crystal monomers in the polymer dispersed liquid crystal layer does not affect brightness of light in a front view direction, and can improve intensity of an emitted light, thereby effectively improving luminous efficiency of a display panel and user experiences.

Embodiments of the present disclosure provide a transfer plate, a method for manufacturing a display panel, and the display panel. The transfer plate is configured to form an alignment film of a display panel. The display panel includes a display region and a light signal transmission region. The transfer plate includes a bottom plate and a protruding plate fixed to the bottom plate. The protruding plate includes a first area corresponding to the light signal transmission region, a first protruding structure is disposed in the first area, and a shape of the first protruding structure is adapted to a shape of the light signal transmission region.

Manufacturing equipment of low-temperature formed liquid crystal alignment film and panel manufacturing process thereof are provided. The manufacturing equipment includes an engraving member, a light curing agent coating member, and a light curing device. In the panel manufacturing process, the engraving member is applied for engraving an alignment pattern on a surface of a prepared substrate. Next, the light curing agent coating member coats the light curing agent on the surface of the substrate having the alignment pattern thereon. Then, the light curing device is applied for light curing the light curing agent, so as to form a crystal alignment film having a texture of the alignment pattern. Finally, liquid crystal is injected between two substrates having the liquid crystal alignment film and encapsulating the structure to form a panel.

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.

The present disclosure relates to a display substrate, a display device, and a method for manufacturing a display substrate. The display substrate having a display area and a non-display area, includes: a common electrode layer located in the non-display area; a common electrode line located in the non-display area; and a plurality of bar-shape via holes located in the non-display area; wherein the plurality of bar-shape via holes extend in a direction away from the display area, and the common electrode layer is electrically connected to the common electrode line through the plurality of bar-shape via holes.

A liquid crystal aligning agent composition for preparing a liquid crystal alignment film having enhanced stability and exhibiting excellent electrical characteristics, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the liquid crystal alignment film.

A method of coating a polyimide film and a method of fabricating a display panel are provided by the embodiments of the present invention. The method of coating a polyimide film includes providing a glass substrate and at least one nozzle; forming a nanomaterial filled graphic letterpress on the glass substrate, wherein the nanomaterial filled graphic letterpress is formed with a plurality of protrusions; and spraying a polyimide liquid on the nanomaterial filled graphic letterpress by the at least one nozzle to form a polyimide film.

A switchable optical assembly comprises a switchable waveplate configured to be electrically activated and deactivated to selectively alter the polarization state of light incident thereon. The switchable waveplate comprises first and second surfaces and a first liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules that are rotated about respective axes parallel to a central axis, where the rotation varies with an azimuthal angle about the central axis. The switchable waveplate additionally comprises a plurality of electrodes to apply an electrical signal across said first liquid crystal layer.

A display substrate and a preparation method therefor, a display panel and a display device. The display substrate includes a plurality of pixel regions arranged in an array. The display substrate includes: a base; pixel electrodes provided on the base and located in the pixel regions; separation columns provided on the base and located between two adjacent pixel regions in the row direction, side surfaces of the separation columns having hydrophobic characteristics; and an alignment film provided on the pixel electrodes and located in the pixel regions, where edges of two opposite sides of the alignment film in the row direction are in contact with a side surface of the separation columns, and a surface of the alignment film on a side facing away from the base has a shape of gradually protruding from both sides toward the middle in the row direction.

A display substrate and a preparation method therefor, a display panel and a display device. The display substrate includes a plurality of pixel regions arranged in an array. The display substrate includes: a base; pixel electrodes provided on the base and located in the pixel regions; separation columns provided on the base and located between two adjacent pixel regions in the row direction, side surfaces of the separation columns having hydrophobic characteristics; and an alignment film provided on the pixel electrodes and located in the pixel regions, where edges of two opposite sides of the alignment film in the row direction are in contact with a side surface of the separation columns, and a surface of the alignment film on a side facing away from the base has a shape of gradually protruding from both sides toward the middle in the row direction.