Abstract: Provided are a driving method for a display panel, and a display device. The display panel includes multiple pixels arranged in an array and multiple data lines, pixels located in the same column are electrically connected to the same data line, and the multiple data lines are configured to provide data signals for the multiple pixels in stages. The driving method includes acquiring a voltage difference between data signals provided for each data line in two adjacent stages; determining a charge current of each data line according to the voltage difference; and providing the data signal for each data line with the charge current.

Abstract: The present disclosure provides a light-emitting plate and a preparation method thereof and a display terminal, wherein the light-emitting plate includes a drive substrate and light sources. The light-emitting plate further includes light reflecting structures, one of light sources is located between two adjacent light reflecting structures. Each of the light reflecting structures includes a first side surface and a second side surface facing an adjacent light source, respectively. One end of the first side surface and one end of the second side surface are connected to the drive substrate. In one of the light reflecting structures, both of the first side surface and the second side surface are concave, and the first side surface and the second side surface are recessed toward each other.

Abstract: A display module includes a display panel with a plurality of bonding electrodes arranged at intervals along a selected side edge of a non-display surface and divided into two bonding electrode groups, a first flexible circuit board and a second flexible circuit board. For the first flexible circuit board, each first conductive contact piece in a first wiring region is connected to a bonding electrode in a first bonding electrode group. For the second flexible circuit board, each second conductive contact piece in a second wiring region is connected to a bonding electrode in a second bonding electrode group. The first wiring region is closer to the selected side edge than the second wiring region in a first direction. The first fan-out region is spaced apart from the second wiring region in a second direction perpendicular to the first direction.

Abstract: The present disclosure discloses a preparation method of a tin-based lithium cobaltate precursor and use thereof. The method involves adding a cobalt salt solution, a precipitant and a complexing agent for reaction to obtain a precipitate, wherein the precipitant is a mixed solution of carbonate and stannate; calcining the precipitate; and mixing the calcined material with dioxane, ball-milling the mixture, and subjecting the ball-milled product to a heating and pressurization treatment to obtain the tin-based lithium cobaltate precursor. In the present disclosure, after carbonate and stannate are blended, the blend react with cobalt salt to form the co-precipitate of cobalt carbonate and cobalt stannate, and after calcination, a mixture of cobalt(II,III) oxide and tin dioxide is formed. By utilizing dioxane for solvent hot pressing, particles are bonded to each other, forming grain boundary channels. In addition, by doping with tin, the conductivity of the material is improved.

Abstract: A display panel and a display device are provided. The display panel includes at least two splicing light-emitting units spliced with each other. A first signal line and a second signal line are respectively disposed on a first side surface of the carrier substrate and a second side surface opposite to the first side surface of the carrier substrate. The first signal line is electrically connected to the first connection line, and the second signal line is electrically connected to the second connection line. The present application adds input paths of the first input signal and the second input signal, and improves the problems of brightness difference and uniformity deterioration.

Abstract: A drive backplane and a method for preparing same, a light-emitting substrate and a method for preparing same. The drive backplane includes a driving substrate, a reflective layer, and a number of barriers, wherein the driving substrate includes a base substrate and connecting components disposed on the base substrate, and the connecting components are used to connect to light-emitting devices. The drive backplane can avoid a phenomenon that the reflective layer covers the connecting components, and the reflective layer covers a larger area on the drive backplane and reflectivity is relatively high.

Abstract: Disclosed is a method for efficiently removing fluorine from a spent lithium battery. The method comprises: mixing aluminum and a sodium hydroxide solution for reaction to obtain a sodium metaaluminate solution; introducing sulfuric acid into the sodium metaaluminate solution, and stirring to react at a certain temperature to obtain a fluorine removal agent; adding a sodium fluoroaluminate seed crystal and the fluorine removal agent into an impurity-removed battery powder leaching solution, introducing a sodium carbonate solution at the same time, performing reaction at a certain temperature, controlling the pH value of a reaction endpoint, and performing solid-liquid separation after the reaction is finished to obtain a fluorine-removed liquid and filter residues; and adding the sodium hydroxide solution into the filter residues for reaction, and performing solid-liquid separation to obtain a filtrate containing fluorine and aluminum, and insoluble residues.

Abstract: A grating adjustment apparatus includes a first electrode layer, a second electrode layer and a first substrate and a second substrate that are opposite to each other; the grating adjustment apparatus further includes a plurality of first driving lines, a plurality of second driving lines and a plurality of grating units arranged in the first direction, and is configured as: when the grating adjustment apparatus is powered on, the grating unit is capable of forming a light transmission unit and a shading unit, and opening positions and/or opening ratios of the grating unit are adjustable; and the plurality of grating units are divided into at least one group; for the grating units in the same group, at least two of the first sub-electrodes are electrically connected to different first driving lines, and at least two of the second sub-electrodes are electrically connected to different second driving lines.

Abstract: Provided is a preparation method for a layered cobalt-free positive electrode material, the method comprising the steps: (1) mixing a lithium salt, a nickel source, a manganese source, a dopant and a solvent, and subjecting same to wet ball milling to obtain a mixed slurry; (2) spray drying the mixed slurry to obtain a precursor; and (3) carrying out one instance of calcination on the precursor in an oxygen-containing atmosphere to obtain the layered cobalt-free positive electrode material. Further provided are a layered cobalt-free positive electrode material, which is obtained by the preparation method, and a lithium-ion battery containing the layered cobalt-free positive electrode material.

Abstract: Implementations of the present disclosure disclose a memory controller and an operation method thereof, a memory system and an electronic device. The memory controller is coupled to a memory. The operation method can include erasing at least one memory block in the memory before receiving a write command, adding the erased memory blocks into an idle block queue, and performing data writing on the memory blocks in the idle block queue after receiving the write command.

Abstract: An anti-scratch anti-reflection module, a manufacturing method for the same, and a display panel are provided. The anti-scratch anti-reflection module includes a substrate, a reflective index control layer, and a hardening layer. The reflective index control layer is disposed on a surface of the substrate. The hardening layer is disposed on a surface of the reflective index control layer away from the substrate. Material of the reflective index control layer includes metal oxide.

Abstract: A cover plate may include a plate body and a gasket. The plate body includes a first face and a second face that are disposed back from each other, and the plate body is provided with a first hole. The gasket includes a body part, and the body part is provided with a second hole, and in a direction from the first face to the second face, the first hole penetrates through the plate body, and the second hole penetrates through the body part. When the cover plate is applied to the power module, each pin of the power module may pass through one second hole and be inserted into one first hole in a one-to-one correspondence, and the pin is in interference fit with the corresponding first hole. In this way, the plate body may limit each pin, thereby improving a position degree of the pin.

Abstract: A heat dissipation apparatus includes a heat-conducting plate, where a liquid channel is disposed on a first surface of the heat-conducting plate; a mounting base, where an accommodation cavity configured to accommodate a partial area that is in the heat-conducting plate and that includes a second surface is disposed on the mounting base. The first surface and the second surface are disposed opposite to each other. A pressing plate is configured to fasten the heat-conducting plate in the accommodation cavity. The pressing plate is detachably and firmly connected to the mounting base, a sealing cavity is formed between the pressing plate and the first surface of the heat-conducting plate, and the sealing cavity is configured to accommodate the liquid channel A liquid inlet connector and a liquid outlet connector that are connected to the liquid channel are disposed on the pressing plate.

Abstract: Method for analyzing and predicting state of health of a lithium battery includes: collecting battery data within a predetermined time interval, where the battery data comprises at least battery operating time, current, and voltage; determining a target area based on the battery data; establishing a relationship between a cumulative capacity of the target area and the state of health of the battery; correlating the number of cycles in the current state of the battery with the state of health of the battery using the cumulative capacity of the target area and determining a relationship between the number of cycles and the state of health of the battery; and predicting the state of health of the battery in the future according to the relationship between the number of cycles and the state of health of the battery. The method is simple and easy to operate, and practical as well.

Abstract: A splicing display panel and a splicing display device are provided. The splicing display panel includes at least two spliced first display modules and at least one second display module. There is a seam between two adjacent first display modules. A portion of the first display module corresponding to a bezel area is provided with an accommodating slot. The accommodating slot of one of the first display modules is spliced with the accommodating slot of another one of the first display modules to form an accommodating cavity. The at least one second display module is arranged in the accommodating cavity, and the second display module covers the seam.

Abstract: A memory, a controlling method thereof, a memory system and an electronic device are disclosed. The memory can include a semiconductor layer and a memory array disposed on the semiconductor layer. The memory array can include a plurality of memory strings connected with the same bit line. Each memory string can include a memory cell and a select cell connected on at least one side of the memory cell. The select cell can include a first kind of transistors with a first threshold voltage and a second kind of transistors with a second threshold voltage. The first kind of transistors can be connected with the second kind of transistors. The first threshold voltage can be different from the second threshold voltage. Different memory strings can be controlled to be on or off to realize selective controlling functions for a plurality of memory strings connected with the same bit line.

Abstract: The voltage sampling apparatus includes a differential circuit, a voltage division circuit, and a first calibration switch. A first output end of the differential circuit and an input end of a first voltage division branch of the voltage division circuit are connected to one end of the first calibration switch. A second output end of the differential circuit and an input end of a second voltage division branch of the voltage division circuit are connected to the other end of the first calibration switch. When the first calibration switch is in an on state, the differential circuit is configured to input a target signal to the first voltage division branch and the second voltage division branch that are connected in parallel.

Abstract: A semiconductor device includes an active layer having a first side and a second side, a bit line layer having a first bit line sub-layer disposed on the first side and a second bit line sub-layer disposed on the second side, and capacitor structures. The active layer includes active units arranged in an array and disposed at intervals. The first and second bit line sub-layers are connected with the active units. The capacitor structures are disposed on the first side and the second side of the active layer and connected with the active units. By disposing the bit lines and the capacitor structures on two opposite sides of two ends of the active units, the semiconductor device can have larger spaces on the two sides of the ends of the active units to accommodate the capacitor structures, as compared with a semiconductor device with the same number of capacitor structures.

Abstract: The present invention provides a method for preparing a dielectric layer on a surface of a wafer, a wafer structure, and a method for shaping a bump. The preparation method includes: providing a wafer; forming an alignment mark on the wafer, the thickness of the alignment mark being not less than 0.3 ?m; and forming a dielectric layer on the wafer where the alignment mark is formed. In the present application, before the dielectric layer is shaped on a surface of the wafer, the alignment mark is prepared in advance on the surface of the wafer, thereby avoiding the need of reworking due to an invisible alignment mark in a preparation stage of the dielectric layer, and ensuring the continuity of the process.

Abstract: A method of repairing a gate-on-array circuit is provided. The method includes at least one of disconnecting a X-th stage gate driving signal output terminal from a X-th stage gate driving signal output line; disconnecting a X-th stage compensation control signal output terminal from a X-th stage compensation control signal output line; or disconnecting a X-th stage carry signal output terminal from a X-th stage carry signal output line. The method further includes at least one of connecting the X-th stage gate driving signal output line to a repair gate driving signal output terminal through a gate driving signal output repair line; connecting the X-th stage compensation control signal output line to a repair compensation control signal output terminal through a compensation control signal output repair line; or connecting the X-th stage carry signal output line to a repair carry signal output terminal through a carry signal output repair fine.