Abstract: A display panel and a preparation method therefor, and a display device. The display panel comprises an active area and a peripheral area, which is arranged at the periphery of the active area and comprises a bending zone (410), wherein an edge of the peripheral area is provided with a protrusion (500), and the protrusion (500) has an alignment mark (400) for the bending zone (410).

Abstract: A display module and a display device are provided. The display module includes: a display panel including a display area and a non-display area surrounding the display area; an optical adhesive layer (2) located on a light emitting side of the display panel and covering the display area; and a cover plate, located on a side of the optical adhesive layer facing away from the display panel and covering the display panel and the optical adhesive layer. A limiting groove used for preventing an edge of the optical adhesive layer from overflowing is formed on a side of the cover plate facing the optical adhesive layer. A least the edge of the optical adhesive layer is in the limiting groove.

Abstract: A circuit board structure and a display device, the circuit board structure includes a first circuit board, a second circuit board, a filling portion and an electromagnetic shield layer. The second circuit board has a thickness greater than that of the first circuit board. At least one corner portion forms at a joint of the first circuit board and the second circuit board. A connection line forms at a joint of the second circuit board and the first circuit board. The connection line is located at the corner portion. The filling portion fills the corner portion, an extending direction of the filling portion is identical to an extending direction of the corner portion. The extending direction is identical to a direction of the connection line. A thickness of a cross section of the filling portion perpendicular to the extending direction increases as a distance from the second circuit board decreases.

Abstract: A battery cell includes a housing, an electrode assembly accommodated in the housing, and an end cover configured to buckle to an opening of the housing. The end cover comprises a first body part, a first end wall, and a first peripheral wall. The first body part is configured to be connected to the housing. The first end wall is farther away from the electrode assembly than the first body part. The first peripheral wall is disposed around an edge of the first end wall and connected to the first body part, and the first peripheral wall and the first end wall jointly form a first accommodation space used to accommodate at least a part of a tab of the electrode assembly. The first peripheral wall comprises a first arc wall extending from the first end wall to the first body part along a first arc trajectory.

Abstract: This application discloses an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly may include a first electrode plate and a second electrode plate that have opposite polarities, where the first electrode plate and the second electrode plate may be stacked. The first electrode plate may include a first active substance portion and a plurality of first inactive substance portions protruding from the first active substance portion, and the plurality of first inactive substance portions may be stacked. A connection layer may be disposed between at least two adjacent first inactive substance portions, and the connection layer may be spaced from the first active substance portion in a first direction and connect two adjacent first inactive substance portions, where the first direction is a direction in which the first inactive substance portions protrude from the first active substance portion.

Abstract: An air sterilizing device, comprising: a housing (100), forming an air flow path thereon; an ozone generating unit (200), generating ozone particles to be supplied to the air flow path; a filter cartridge (300), receiving ozone generated by the ozone generating unit (200) to discharge bubbles comprising ozone and hydroxyl radicals; an ultrasonic generating unit (400), connected to the filter cartridge (300) to generate ultrasonic waves; an air supply fan (500), configured to supply air to the air flow path of the housing (100); and a power supply unit, configured to supply power for driving the ozone generating unit (200), the ultrasonic generating unit (400), and the air supply fan (500).

Abstract: Provided is a device that uses ozone, hydrogen peroxide, and hydroxyl radicals to sterilize, detoxify and purify indoor air, while simultaneously removing radon gas. The device is provided with a condensing unit (10) having a Peltier structure, and further provided with a device (2) that discharges electricity and generates ozone. The device further has an ultraviolet lamp (9) and a titanium dioxide coating for creating a titanium dioxide physical environment. The device is also provided with generation boxes (3, 5). Ultrasonic waves are used to electrolyze a liquid, such as water, hydrogen peroxide or oxygen, in the generation boxes (3, 5), so as to further generate hydroxyl radicals.

Abstract: An air sterilizing device, comprising: a housing (100), forming an air flow path thereon; an ozone generating unit (200), generating ozone particles to be supplied to the air flow path; a filter cartridge (300), receiving ozone generated by the ozone generating unit (200) to discharge bubbles comprising ozone and hydroxyl radicals; an ultrasonic generating unit (400), connected to the filter cartridge (300) to generate ultrasonic waves; an air supply fan (500), configured to supply air to the air flow path of the housing (100); and a power supply unit, configured to supply power for driving the ozone generating unit (200), the ultrasonic generating unit (400), and the air supply fan (500).

Abstract: A system for recovering valuables from vent gas in polyolefin production is disclosed. The system includes a compression device, a drying device, a condensation and separation device, and a membrane separation device that are connected to each other in sequence. The drying device includes a first adsorption bed and a second adsorption bed which are in parallel connection with each other and in which a desiccant is provided, and a third adsorption bed which is in communication with the first adsorption bed and the second adsorption bed respectively and in which a desiccant is provided. The first adsorption bed and the second adsorption bed are in an adsorption process and a regeneration process alternately, and the third adsorption bed is in an auxiliary regeneration process. A process for recovering valuables from vent gas in polyolefin production is further disclosed.

Abstract: A process for recovering valuables from vent gas in polyolefin production is disclosed. The process includes a compression cooling separation step, a heavy hydrocarbon separation step, a light hydrocarbon separation step, a N2 purification step, and a turbo expansion step in sequence. The N2 purification step comprises a membrane separation procedure. The light hydrocarbon separation step comprises at least one gas-liquid separation procedure.

Abstract: A process for recovering valuables from vent gas in polyolefin production is disclosed. The process includes a compression cooling separation step, a heavy hydrocarbon separation step, a light hydrocarbon separation step, a N2 purification step, and a turbo expansion step in sequence. The N2 purification step comprises a membrane separation procedure. The light hydrocarbon separation step comprises at least one gas-liquid separation procedure.