Abstract: An electrode piece, a preparation method thereof, a battery and an electric apparatus are provided. The electrode piece includes a current collector and an active layer arranged on a surface of the current collector; the active layer is provided with a first groove and a second groove, and a groove bottom of the second groove is higher than that of the first groove, and is lower than a surface of the active layer that faces away from the current collector; and the electrode piece has a first side edge and a second side edge that are arranged opposite each other along a first direction, and one side edge of the groove bottom of the second groove is flush with at least one of the first side edge and the second side edge and is located on at least one side of the first groove along the first direction.

Abstract: The present disclosure provides a method for determining effective storage capacity of a gas storage reconstructed from a water-flooded volatile oil reservoir. The method includes: determining an oil reservoir water flooding recovery ratio; determining crude oil production extracted only due to a water flooding effect in an oil reservoir development process; determining an oil-bearing pore volume of a flooded zone of a reservoir influenced due to the water flooding effect and an oil-bearing pore volume of a pure oil zone of a reservoir not influenced due to the water flooding effect corresponding to its original state before an oil reservoir is put into development when the gas storage is reconstructed from the oil reservoir; determining an effective pore volume for gas storage; and computing the effective storage capacity of the gas storage reconstructed from the water-flooded volatile oil reservoir.

Abstract: A bullet-screen comment processing method and apparatus are provided. The bullet-screen comment processing method includes: obtaining a to-be-displayed bullet-screen comment of a target video; determining preset bullet-screen comment tracks of a video playing interface based on a playing mode of the target video on the video playing interface, where the preset bullet-screen comment tracks are generated based on at least two playing modes; and rendering the to-be-displayed bullet-screen comment to the video playing interface based on the preset bullet-screen comment tracks and a bullet-screen comment display effect.

Abstract: The present disclosure provides a display panel and a display device. The display panel includes: a substrate; a plurality of display units arranged on a side of the substrate, each of the plurality of display units including at least one sub-pixel; a plurality of elastic stretching units arranged on a side of the substrate, each of the plurality of elastic stretching units being connected between two adjacent display units, and a plurality of hollow regions being formed between the plurality of elastic stretching units and the plurality of display units. A sum of areas of the plurality of hollow regions is a, a sum of areas of the plurality of display units is b, and a sum of areas of the plurality of elastic stretching units is c; 15%?a/(a+b+c)×100%?30%.

Abstract: A display substrate is provided, the display substrate has a plurality of sub-pixels arranged in an array, and includes a driving circuit substrate, a plurality of first electrodes, a pixel definition layer and a light-emitting material layer. The pixel definition layer is at least on a side of the plurality of first electrodes away from the driving circuit substrate, and includes a plurality of sub-pixel openings respectively exposing the plurality of first electrodes and at least one partition structure on the pixel definition layer. The light-emitting material layer is on a side of the pixel definition layer away from the driving circuit substrate and at least in the plurality of sub-pixel openings, the pixel definition layer includes a first pixel definition sub-layer and a second pixel definition sub-layer, and a width of the second pixel definition sub-layer is greater than a width of the first pixel defining sub-layer.

Abstract: A light emitting device includes: a first electrode layer, a first dielectric layer, a first luminescent layer, a second luminescent layer, a second dielectric layer and a second electrode layer that are arranged sequentially in stack; a source electrode and a drain electrode, wherein the source electrode and the drain electrode are arranged in a same layer, and are both located between the first luminescent layer and the second luminescent layer; and an insulating layer provided in the same layer as the source electrode and the drain electrode, and located between the source electrode and the drain electrode. By controlling the two electrode layers separately, the two luminescent layers may separately and independently emit light. By providing different materials of the luminescent layers, the effect of light emission of multiple mixed colors or the effect of an increased light intensity may be realized.

Abstract: A method for improving the curvilinear running speed of railway vehicles and the small tilting system: when the railway vehicle is driven on a curve, the raising and falling of air springs on both sides of the railway vehicle are controlled by a control assembly to realize small tilting of the railway vehicle toward the inner side of the curve; the transverse component of gravity after the small tilting of the railway vehicle is used for balancing part of the centrifugal force and reducing the influence of the centrifugal force, thereby improving the curve driving speed of the railway vehicle; and at the same time, an adjustable torsion bar system is controlled to provide a unidirectional anti-rolling torque for preventing the railway vehicle from rolling toward the outer side of the curve without hindering the railway vehicle from tilting slightly toward the inner side of the curve.

Abstract: A light emitting device, a light emitting base plate and a light emitting apparatus, which relates to the technical field of displaying. A light emitting device includes: a first electrode; a second electrode facing the first electrode; and at least one luminescent layer provided in stack between the first electrode and the second electrode, wherein the at least one luminescent layer includes: a first luminescent material for emitting a first light ray when driven by a current or voltage; and a second luminescent material for emitting a second light ray when driven by a current or voltage; wherein a color of the first light ray and a color of the second light ray are different.

Abstract: A monolithic integrated multi-segment cascade optical frequency comb and its chip are disclosed, which belongs to the technical field of sensing detection, quantum information and optical communication technology. The optical frequency comb includes a first semiconductor passive mode-locking laser, a semiconductor optical amplifier, and a second semiconductor passive mode-locking laser sequentially integrated and connected; the first semiconductor passive mode-locking laser includes a first reverse bias absorption area integrated with an optogalvanic distribution grating and a first gain cavity length extender (coupled multi-ring or multi-disk); the second semiconductor passive mode-locking laser includes a second reverse bias absorption area and a second gain cavity length extender (coupled multi-ring or multi-disk); each structure is connected to each other by electrical isolation grooves.

Abstract: A display panel includes a plurality of driving base plates stacked, each of the driving base plates includes a substrate and a driving unit located on the substrate, orientations of the driving base plates are the same; a plurality of pixel units arranged in an array, each of the pixel units includes a plurality of sub-pixels, and orthographic projections on the substrate of light emitting regions of the sub-pixels in the same pixel unit do not overlap with each other; and each of the driving base plates is provided with at least one sub-pixel on one side away from the substrate, and the driving unit on each of the driving base plates is electrically connected to the at least one sub-pixel; and a quantity of the driving base plates is less than or equal to a quantity of the sub-pixels in one of the pixel units.

Abstract: The present disclosure discloses a planar magnetic element and a manufacturing method thereof. The planar magnetic element includes: a housing, with an internal space; a core, accommodated in the internal space of the housing, and the core including at least one limb; at least one planar winding corresponding to the limb; and potting adhesive, filled in all air gaps in the internal space of the magnetic element, and blocking the clearance and creepage path between the planar winding and the core and/or between the two planar windings. The present disclosure may significantly reduce the volume of the magnetic element and greatly increase the partial discharge extinction voltage, thereby reducing the partial discharge risk of the magnetic element and improving the reliability. Moreover, the compact structure of the planar magnetic element is conducive to improving the power density of the module.

Abstract: A display substrate is provided, the display substrate has a plurality of sub-pixels, and includes a driving circuit substrate, a plurality of first electrodes, a pixel definition layer and a light-emitting material layer. The driving circuit substrate includes a plurality of pixel driving circuits and a protective insulating layer, the protective insulating layer includes a plurality of first vias, and the plurality of first electrodes are respectively electrically connected to the output terminals of the plurality of pixel driving circuits through the first vias. The pixel definition layer includes a plurality of sub-pixel openings and at least one partition structure. The light-emitting material layer at least in the plurality of sub-pixel openings, the pixel definition layer includes a first pixel definition sub-layer and a second pixel definition sub-layer, and a width of the second pixel definition sub-layer is greater than a width of the first pixel defining sub-layer.

Abstract: An electrical system includes a first conduction terminal, a second conduction terminal, N power units and N supporting devices. The N power units are electrically connected between the first conduction terminal and the second conduction terminal in series, and N is an integer greater than or equal to 2. Each of the N supporting devices includes a conductive part and a support part. Each of the N power units is disposed on the corresponding conductive part. The conductive part is electrically connected with a power terminal of one of the N power units or electrically connected with a reference potential of the electrical system. The support part is connected between the corresponding conductive part and a ground potential.

Abstract: The present disclosure discloses a planar magnetic element and a manufacturing method thereof. The planar magnetic element includes: a housing, with an internal space; a core, accommodated in the internal space of the housing, and the core including at least one limb; at least one planar winding corresponding to the limb; and potting adhesive, filled in all air gaps in the internal space of the magnetic element, and blocking the clearance and creepage path between the planar winding and the core and/or between the two planar windings. The present disclosure may significantly reduce the volume of the magnetic element and greatly increase the partial discharge extinction voltage, thereby reducing the partial discharge risk of the magnetic element and improving the reliability. Moreover, the compact structure of the planar magnetic element is conducive to improving the power density of the module.

Abstract: The present disclosure provides a flexible base substrate, a display panel and a display device, and belongs to the field of display technologies. The flexible base substrate includes at least one substrate unit each having a middle region and an edge region; wherein the flexible base substrate includes: a first flexible layer, a second flexible layer, and an isolation layer disposed between the first flexible layer and the second flexible layer; the isolation layer includes a first surface in contact with the first flexible layer, and a second surface in contact with the second flexible layer; and wherein at least one of the first surface and the second surface has a segment difference on two sides of a junction between the middle region and the edge region.

Abstract: A display panel mainly comprises a substrate, a driving layer, a plurality of first electrodes, a light-emitting functional layer and a second electrode, wherein the substrate has a first pixel region and a second pixel region; the driving layer is arranged on one side of the substrate, and an orthographic projection thereof on the substrate covers the first pixel region and the second pixel region, and the driving layer located in the first pixel region is provided with recessed regions; the plurality of first electrodes are distributed in an array on the side of the driving layer that faces away from the substrate, both the first pixel region and the second pixel region are provided with the first electrodes, and the first electrodes and the recessed regions are distributed at intervals; the light-emitting functional layer covers the first electrodes; and the second electrode covers the light-emitting functional layer.

Abstract: Embodiments of the present disclosure provide an OLED device, a method of manufacturing the OLED device, and a display panel. The OLED device comprises: a substrate, a first electrode layer, a color filter layer, a light emitting layer and a second electrode layer. The first electrode layer is one of an anode layer or a cathode layer and comprises: a first sub-electrode layer disposed on the substrate; and a second sub-electrode layer electrically connected with the first sub-electrode layer. The color filter layer is disposed on the first sub-electrode layer and the second sub-electrode layer is disposed on the color filter layer. The second electrode layer is the other of the anode layer or the cathode layer and the light emitting layer is disposed between the second electrode layer and the second sub-electrode layer of the first electrode layer.

Abstract: A bullet-screen comment processing method and apparatus are provided. The bullet-screen comment processing method includes: obtaining a to-be-displayed bullet-screen comment of a target video; determining preset bullet-screen comment tracks of a video playing interface based on a playing mode of the target video on the video playing interface, where the preset bullet-screen comment tracks are generated based on at least two playing modes; and rendering the to-be-displayed bullet-screen comment to the video playing interface based on the preset bullet-screen comment tracks and a bullet-screen comment display effect.

Abstract: The present disclosure relates to an array substrate, a manufacturing method thereof, a three-dimensional display panel, and a display device. The array substrate includes a plurality of sub-pixels arranged in an array. Each sub-pixel includes a first composite region and a second composite region alternately arranged, as well as a substrate; a partition portion formed in the second composite region; a pixel electrode including a first composite electrode formed in the first composite region and a second composite electrode formed on the partition portion; an organic light emitting layer formed on a side of the pixel electrode away from the substrate; a pixel defining layer formed on the substrate provided around the organic light emitting layer; a common electrode having a polarity opposite to the pixel electrode formed on a side of organic light emitting layer away from the substrate; and a packaging layer.

Abstract: Proposed are a display substrate, a manufacturing method thereof and a display device. The display substrate includes a base and multiple pixel units disposed on the base, wherein, at least one pixel unit of the multiple pixel units includes multiple sub-pixels with different colors, and at least one sub-pixel of the multiple sub-pixels includes multiple sub-pixel components with the same color; anodes of the sub-pixel components are electrically connected with driving circuits, and the driving circuits are independent of each other, and in a plane perpendicular to the display substrate, a side of the anode of the sub-pixel component away from the base at least includes a partial surface, and a normal of the partial surface is not perpendicular to the base.