Abstract: The present disclosure belongs to the technical field of display, and provides an array substrate, a handwriting tablet, a tablet eraser, a handwriting tablet system and a method for erasing a pattern. The array substrate is provided with a handwriting area, and a peripheral area surrounding the handwriting area. The array substrate includes erasing electrodes, which are arranged in an array, and a driving circuit for driving the erasing electrodes, wherein the driving circuit is configured to load, under the irradiation of preset light, an erasing voltage to the erasing electrodes. The array substrate is further provided with an NFC coil, which is used for sending an NFC signal, wherein a sensing range of the NFC coil covers the handwriting area.

Abstract: Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes: a first base plate and a second base plate that are oppositely disposed, and a liquid crystal layer disposed between the first base plate and the second base plate, wherein the liquid crystal layer includes bistable liquid crystal molecules; the first base plate includes: a first substrate, and an electromagnetic touch layer and a pixel electrode layer that are disposed on a side of the first substrate, wherein the electromagnetic touch layer is provided with a plurality of electromagnetic signal lines, each two adjacent electromagnetic signal lines being connected in series; and the second base plate includes: a second substrate, and a common electrode layer that is disposed on a side of the second substrate.

Abstract: There is provided a projection apparatus, including: a light emitting component configured to generate light; a liquid crystal display panel on a light outgoing side of the light emitting component and including a liquid crystal layer between a first substrate and a second substrate, the liquid crystal layer including cholesteric liquid crystals configured to be in a conical helix texture under an electric field applied, so as to reflect light matched with a helix pitch of the conical helix texture; an optical component between the light emitting component and the liquid crystal display panel, and configured to adjust a propagation direction of light, an acute angle being formed between an optical axis of the optical component and a normal of the liquid crystal display panel; and a projection lens configured to receive and project the light reflected by the liquid crystal display panel. A display system is further provided.

Abstract: A high-contrast grating (HCG) structure and method of fabrication. The grating of the HCG is formed over a structural spacer layer, allowing a wider range of grating patterns, such as post and other forms which are lack structural support when fabricated over an air spacing beneath the grating elements. The technique involves etching the HCG grating, followed by oxidizing through this HCG grating into an oxide spacer layer beneath it creating a low-index area beneath the grating. This form of HCG reflector can be utilizes as upper and/or lower reflectors in fabricating vertical cavity surface emitting lasers (VCSELs).

Abstract: Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes a first substrate, a second substrate, a third substrate, a first liquid crystal layer, and a second liquid crystal layer; wherein the first substrate includes: a first base, and a first pixel electrode and a transparent electrode, wherein the first pixel electrode is insulated from the transparent electrode, and the first pixel electrode is closer to the second substrate than the transparent electrode is; wherein the first substrate, the first liquid crystal layer and the second substrate are configured to form a display portion of the liquid crystal handwriting board; and the first substrate, the second liquid crystal layer and the third substrate are configured to form a writing portion of the liquid crystal handwriting board.

Abstract: The present disclosure provides a liquid crystal composition and a method for preparing the same, and a display panel, and the liquid crystal composition comprises a mixture of rod-shaped monomer molecules, a chiral agent, and a mixture of bent molecules, wherein the mixture of bent molecules comprises multiple bent molecules.

Abstract: Provided are a vertical cavity surface emitting laser and a manufacturing method thereof, the vertical cavity surface emitting laser comprises a laser precursor, and the laser precursor comprises a first reflector layer, an oxidation layer, a light-emitting layer and a second reflector layer which are stacked, wherein the second reflector layer comprises a plurality of first reflection layers and a plurality of second reflection layers, and a groove is formed on the side of the second reflection layer from the oxidation groove and in a direction away from the oxidation groove; a protection layer is arranged on the laser precursor, and the protection layer at least covers the inner wall of the oxidation groove, and the groove is filled with a part of the protection layer. The technical solution may avoid the collapse of the edge of the first reflection layer.

Abstract: An array substrate, a panel, a handwriting tablet and a method for driving the same, relate to the field of handwriting tablet technology. The array substrate includes a handwriting area and a peripheral area surrounding the handwriting area; the handwriting area includes a plurality of handwriting sub-areas; wherein the array substrate includes a plurality of NFC coils and a plurality of erasure units. The plurality of NFC coils are arranged in the plurality of handwriting sub-areas in a one-to-one correspondence. The plurality of erasure units are arranged in the plurality of handwriting sub-areas in a one-to-one correspondence.

Abstract: A liquid crystal display panel is provided. The liquid crystal display panel includes: a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer and a plurality of strip-shaped spacers disposed between the first substrate and the second substrate. In the liquid crystal display panel, there is an overlapping area between an orthographic projection of a first signal line on a target base and an orthographic projection of a second signal line on the target base, and an orthographic projection of the strip-shaped spacer on the target base is not overlapped with the overlapping area.

Abstract: A display panel includes a liquid crystal cell, a first polarizing assembly and a second polarizing assembly. The liquid crystal cell includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate. The first polarizing assembly is disposed on a side of the first substrate further away from the liquid crystal layer and includes at least a first polarizing layer having a first transmission axis, and the first polarizing assembly is configured for generating polarized light whose polarization direction is parallel to the first transmission axis. The second polarizing assembly is located on a side of the second substrate further away from the liquid crystal layer and includes at least a transflective layer and a light absorbing layer.

Abstract: An optical film includes a polarizer. The polarizer includes a base layer, and a material of the base layer is obtained by dyeing a base material with a dye. The base material includes a polyvinyl alcohol material, and the dye is selected from blue dichroism organic dyes.

Abstract: Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes: a liquid crystal panel, a photosensitive assembly, and a control assembly; wherein the liquid crystal panel includes a first substrate and a second substrate that are opposite; the photosensitive assembly includes a plurality of photosensitive elements; and the control assembly is electrically connected to the liquid crystal panel and the photosensitive assembly, and is configured to determine position information of a pixel region for erasure by detecting position information of target light irradiated to the liquid crystal panel by the photosensitive assembly and supply a pixel voltage to the plurality of pixel electrodes in the pixel region for erasure, such that a voltage difference is present between the plurality of pixel electrodes in the pixel region for erasure and the common electrode.

Abstract: Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes: a liquid crystal panel, and a drive assembly electrically connected to the liquid crystal panel; wherein the liquid crystal panel includes: a first substrate and a second substrate that are opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate; and the drive assembly is configured to apply, based on position information of a region to be erased, a pixel voltage to a pixel electrode in the region to be erased in the case that the liquid crystal handwriting board is in an erasing mode, such that a voltage difference is developed between the pixel electrode in the region to be erased and the common electrode.

Abstract: A liquid crystal display panel is provided. The liquid crystal display panel includes: a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer and a plurality of strip-shaped spacers disposed between the first substrate and the second substrate. In the liquid crystal display panel, there is an overlapping area between an orthographic projection of a first signal line on a target base and an orthographic projection of a second signal line on the target base, and an orthographic projection of the strip-shaped spacer on the target base is not overlapped with the overlapping area.

Abstract: An array substrate includes a first substrate; and a first electrode and a second electrode disposed on the first substrate and located in a sub-pixel region. At least one of the first electrode and the second electrode includes a plurality of electrode strips. Every two adjacent electrode strips in the first electrode and the second electrode have a slit therebetween. The slit includes a first end portion, a straight portion, and a second end portion connected in sequence. A bend is formed at a connection position of the first end portion and the straight portion, and the second end portion is formed by protruding from the straight portion. The straight portion includes a first edge and a second edge parallel to each other, and an average width of the first end portion in a direction perpendicular to the first edge is less than a width of the straight portion.

Abstract: An array substrate, an opposite substrate and a display panel are provided. The array substrate comprises: a display region and a periphery region surrounding the display region, wherein the display region comprises a plurality of pixel regions, and each of the pixel regions comprises a reflective region and a transmissive region; the reflective region comprises a driving signal outputting layer, a segment gap layer, a passivation layer and a reflective layer, the reflective layer is coupled to the driving signal outputting layer to enable both the reflective layer and the driving signal outputting layer to function as a reflective region driving electrode; the transmissive region comprises a first electrode layer, the first electrode layer is coupled to the driving signal outputting layer, the passivation layer extends to the transmissive region, and the passivation layer is arranged between the first electrode layer and a first base of the display substrate.

Abstract: Provided are a vertical cavity surface emitting laser and a manufacturing method thereof, the vertical cavity surface emitting laser comprises a laser precursor, and the laser precursor comprises a first reflector layer, an oxidation layer, a light-emitting layer and a second reflector layer which are stacked, wherein the second reflector layer comprises a plurality of first reflection layers and a plurality of second reflection layers, and a groove is formed on the side of the second reflection layer from the oxidation groove and in a direction away from the oxidation groove; a protection layer is arranged on the laser precursor, and the protection layer at least covers the inner wall of the oxidation groove, and the groove is filled with a part of the protection layer. The technical solution may avoid the collapse of the edge of the first reflection layer.

Abstract: A writing panel includes an array substrate, a flexible substrate disposed opposite to the array substrate, a liquid crystal layer disposed between the array substrate and the flexible substrate, and a plurality of spacers each in a shape of a column disposed on a surface of the array substrate proximate to the liquid crystal layer. The array substrate includes a base and a pixel driving circuit layer disposed on the base, and the pixel driving circuit layer includes a plurality of thin film transistors and a plurality of signal lines. An orthographic projection of each spacer on the base is non-overlapping with orthographic projections of the plurality of thin film transistors and the plurality of signal lines on the base.

Abstract: The present disclosure provides a high-speed vertical cavity surface emitting laser, an electronic device with the same, and a manufacturing method thereof. The high-speed vertical cavity surface emitting laser includes a substrate layer, a first electrode layer, a first reflector layer, an active layer, an oxide-confined layer, a second reflector layer and a second electrode layer, wherein the oxidation aperture in the oxide-confined layer is a polygon having imperfect symmetry.

Abstract: The present disclosure provides a vertical cavity surface emitting laser, an electronic device with the same, and a manufacturing method for the same. The vertical cavity surface emitting laser includes a substrate layer, a first electrode layer, a first reflector layer, an active layer, an oxide layer, a second reflector layer, a second electrode layer, and a passivation layer, wherein the oxide layer includes a wedge-shaped structure on which an oxide aperture is formed, and the thickness of the center of the wedge-shaped structure is smaller than the thickness of its outer sides. The vertical cavity surface emitting laser provided by the present disclosure can play roles in reducing the photon scattering loss, reducing the parasitic capacitance, and increasing the modulation bandwidth of the laser.