Abstract: An LED carrier plate, comprising a carrier plate front side and a carrier plate back side, wherein a plurality of through holes penetrate the carrier plate front side and the carrier plate back side, and the plurality of through holes at least comprise two rows of through holes; at least every three through holes enclose one island-shaped carrier plate region on the carrier plate front side; and at least two electrode pins are arranged in the island-shaped carrier plate region, and are configured to be connected to an LED arranged on the carrier plate front side. In addition, further disclosed is an LED display device using the LED carrier plate. The carrier plate and the LED display device can achieve both light transmission and LED display/lighting effects.

Abstract: The present disclosure provides a copper alloy material, a preparation method therefor and use thereof, and belong to the technical field of additive manufacturing. The copper alloy material provided by the present disclosure includes the following components by mass percentage: 2.0-7.0% of Cr, 1.0-5.0% of Nb, 0.1-2.0% of Ag, 0.1-0.7% of Zr, 0.02-0.3% of RE, and the balance of Cu. The RE includes the following components by mass percentage: 88-93% of La, 6-9% of Ce, 1.5-1.9% of Pr, and Nd less than or equal to 0.3%, and a sum of mass is 100%. By means of the synergistic effect among RE, Cr, Nb, Ag, Zr and Cu in the present disclosure, thermal conductivity, high-temperature creep property, high-temperature strength, and high-temperature fatigue of the copper alloy material are effectively improved, and the problem of poor high-temperature mechanical properties of a copper alloy material in the prior art is solved.

Abstract: The present invention relates to a method and system for actively adjusting diopter of a head-mounted display, and a head-mounted display. The method includes the following steps: adjusting a relative distance between a displaying component of the head-mounted display and an optical component by a motor driving component; presetting a mapping relationship between a diopter value and a motor pulse number; accordingly converting into a control signal for the motor driving component according to the mapping relationship; and actively adjusting the relative distance between the displaying component of the head-mounted display and the optical component by the motor driving component according to the control signal. A target diopter value is inputted and converted into a corresponding control signal. The motor driving component actively adjusts the relative distance between the displaying component of the head-mounted display and the optical component according to the control signal.

Abstract: Embodiments of the present application provides a battery cell, a battery, an electrical device and a method for wrapping around a battery cell with an insulating film. The battery cell includes: an electrode assembly; a housing having an opening configured to accommodate the electrode assembly, where a first wall of the housing is provided with a pressure relief mechanism; an end cover configured to cover the opening; and an insulating film for wrapping around at least the first wall. The insulating film is provided with a weak region corresponding to the pressure relief mechanism. By providing the insulating film with a weak region corresponding to the pressure relief mechanism, due to the low toughness of the weak region, the influence of the insulating film on the actuation of the pressure relief mechanism can be reduced, and the safety of the battery cell can be improved.

Abstract: A display apparatus and a display panel are provided in the present disclosure. The display apparatus includes a plurality of display panels. A display panel of the plurality of display panels includes a display region and a binding region; the display region includes a first side and a second side which are opposite to each other; the binding region is on the first side; the plurality of display panels includes a first display panel and a second display panel; and a second side of the first display panel is spliced with a second side of the second display panel, where the plurality of display panels includes redundant electrodes.

Abstract: A display apparatus and a display panel are provided in the present disclosure. The display apparatus includes a plurality of display panels. A display panel of the plurality of display panels includes a display region and a binding region; the display region includes a first side and a second side which are opposite to each other; the binding region is on the first side; the plurality of display panels includes a first display panel and a second display panel; and a second side of the first display panel is spliced with a second side of the second display panel, where the plurality of display panels includes redundant electrodes.

Abstract: An on-line automatic cleaning apparatus of slit extrusion type coating die for lithium battery and a method associated therewith are provided. The cleaning apparatus includes: a die lip, a coating steel roller, and a cleaning mechanism disposed therebetween. The cleaning mechanism includes a cleaning chamber which includes elongated sealing strips and a flow-guiding arc groove. Front and rear ends of the cleaning chamber are connected to an inlet sealing plate and an outlet sealing plate respectively. The flow-guiding arc groove is in contact with and presses upper and lower sloped surfaces of the die lip through the elongated sealing strips to seal and thereby define a closed cleaning tunnel. The inlet and outlet sealing plates are in contact with and press two ends of the closed cleaning tunnel respectively for circumferential sealing. An inlet and an outlet are connected to pipes having solenoid valves installed thereon.

Abstract: Utilization data of reserved virtual machine (VM) instances can be obtained from a cloud service provider. A refund recommendation comprising a first quantity of VM instances and a refund credit associated with the first quantity of VM instances can be generated based on the utilization data. A purchase recommendation comprising a second quantity of VM instances and a purchase cost associated with the second quantity of VM instances can be generated. An exchange transaction to return the first quantity of VM instances and purchase the second quantity of VM instances can be generated, where a net total of the exchange transaction is determined based on the refund credit and the purchase cost.

Abstract: A splicing screen and a splicing display apparatus are provided. The splicing screen includes display screens. One of the display screens includes two opposite first edges and two opposite second edges. The two opposite first edges are not parallel to each other. The two opposite second edges have different lengths. The splicing screen at least includes two adjacent display screens. An angle is formed between the two display screens spliced at a corresponding first edge of the two opposite first edges.

Abstract: A display device and its formation method are provided in the present disclosure. The display device includes a flexible display panel; a bending auxiliary layer fixed on a first surface of the flexible display panel; a support plate at a side of the bending auxiliary layer away from the flexible display panel; and an adhesive layer, between the bending auxiliary layer and the support plate, configured to fix the bending auxiliary layer to the support plate. A region where the bending auxiliary layer overlaps the support plate includes a first region and a second region. A sum of thicknesses of the bending auxiliary layer and the support plate in the first region is less than a sum of thicknesses of the bending auxiliary layer and the support plate in the second region. The adhesive layer is in the first region and not in the second region.

Abstract: Provided is a display device including a display panel and a fluid heat dissipation module which includes a circulation cooling assembly and at least one heat dissipation assembly. A heat dissipation assembly includes a first fluid cavity adjacent to a first surface of the display panel and a second fluid cavity adjacent to a second surface of the display panel. The first fluid cavity communicates with the second fluid cavity. The heat dissipation assembly includes at least one fluid inlet disposed on an end of the first fluid cavity and at least one fluid outlet disposed on an end of the second fluid cavity. A fluid inlet and a fluid outlet are each connected to the circulation cooling assembly. The first fluid cavity of the heat dissipation assembly and the second fluid cavity of the heat dissipation assembly are adjacent to two surfaces of the display panel.

Abstract: A flexible display module and a display device are provided. The flexible display module includes a flexible display panel; and a heat dissipation assembly. The heat dissipation assembly includes a fan assembly and a first air tube; the first air tube is disposed on at least one side edge of the flexible display panel; and the fan assembly provides an airflow to a surface of the flexible display panel through the first air tube.

Abstract: The present disclosure provides a method for recovering a porosity evolution process of sequence stratigraphy of carbonate rocks. The method comprises: a step of establishing a sequence stratigraphic framework of carbonate rocks; a step of dividing diagenetic stages; a step of simulating diagenesis and porosity evolution with increasing reservoir thickness and continuous superposition of multiple reservoirs during cyclic rise and fall of sea level to obtain a simulation result; and a step of calculating the porosity evolution in space over time by using the simulation result as initial values for simulation of diagenetic evolution process and simulating in stages and continuity the multi-stage diagenetic evolution process that the carbonate rock strata undergo after sediment based on the divided diagenetic stages.

Abstract: The present disclosure provides a method for recovering a porosity evolution process of sequence stratigraphy of carbonate rocks. The method comprises: a step of establishing a sequence stratigraphic framework of carbonate rocks; a step of dividing diagenetic stages; a step of simulating diagenesis and porosity evolution with increasing reservoir thickness and continuous superposition of multiple reservoirs during cyclic rise and fall of sea level to obtain a simulation result; and a step of calculating the porosity evolution in space over time by using the simulation result as initial values for simulation of diagenetic evolution process and simulating in stages and continuity the multi-stage diagenetic evolution process that the carbonate rock strata undergo after sediment based on the divided diagenetic stages.

Abstract: The present disclosure relates to a vehicle-mounted heat dissipation system and a heat dissipation method. The vehicle-mounted heat dissipation system include: a display screen; a heat dissipation structure configured to define a heat dissipation cavity at the back surface of the display screen; an air-cooling heat dissipation device comprising an air supply device, an air inlet, and an air outlet; a water-cooling heat dissipation device comprising a water storage device and a water pipe; and a control device configured to control, if a temperature of the display screen is higher than a first temperature threshold, the vehicle-mounted heat dissipation system to be in an air-cooling heat dissipation mode, and also configured to control, if the temperature of the display screen is higher than a second temperature threshold, the vehicle-mounted heat dissipation system to be in a water-cooling heat dissipation mode.

Abstract: A flexible display module and a display device are provided. The flexible display module includes a flexible display panel; and a heat dissipation assembly. The heat dissipation assembly includes a fan assembly and a first air tube; the first air tube is disposed on at least one side edge of the flexible display panel; and the fan assembly provides an airflow to a surface of the flexible display panel through the first air tube.

Abstract: A display device and its formation method are provided in the present disclosure. The display device includes a flexible display panel; a bending auxiliary layer fixed on a first surface of the flexible display panel; a support plate at a side of the bending auxiliary layer away from the flexible display panel; and an adhesive layer, between the bending auxiliary layer and the support plate, configured to fix the bending auxiliary layer to the support plate. A region where the bending auxiliary layer overlaps the support plate includes a first region and a second region. A sum of thicknesses of the bending auxiliary layer and the support plate in the first region is less than a sum of thicknesses of the bending auxiliary layer and the support plate in the second region. The adhesive layer is in the first region and not in the second region.

Abstract: An on-line automatic cleaning apparatus of slit extrusion type coating die for lithium battery and a method associated therewith are provided. The cleaning apparatus includes: a die lip, a coating steel roller, and a cleaning mechanism disposed therebetween. The cleaning mechanism includes a cleaning chamber which includes elongated sealing strips and a flow-guiding arc groove. Front and rear ends of the cleaning chamber are connected to an inlet sealing plate and an outlet sealing plate respectively. The flow-guiding arc groove is in contact with and presses upper and lower sloped surfaces of the die lip through the elongated sealing strips to seal and thereby define a closed cleaning tunnel. The inlet and outlet sealing plates are in contact with and press two ends of the closed cleaning tunnel respectively for circumferential sealing. An inlet and an outlet are connected to pipes having solenoid valves installed thereon.

Abstract: The present disclosure relates to a vehicle-mounted heat dissipation system and a heat dissipation method. The vehicle-mounted heat dissipation system include: a display screen; a heat dissipation structure configured to define a heat dissipation cavity at the back surface of the display screen; an air-cooling heat dissipation device comprising an air supply device, an air inlet, and an air outlet; a water-cooling heat dissipation device comprising a water storage device and a water pipe; and a control device configured to control, if a temperature of the display screen is higher than a first temperature threshold, the vehicle-mounted heat dissipation system to be in an air-cooling heat dissipation mode, and also configured to control, if the temperature of the display screen is higher than a second temperature threshold, the vehicle-mounted heat dissipation system to be in a water-cooling heat dissipation mode.

Abstract: The present disclosure relates to a flexible display device, including a flexible substrate. The substrate includes a first portion, a second portion and a bending portion connecting the first portion to the second portion, wherein the flexible substrate has a thickness T. A plurality of display pixels is located at a side of the first portion of the flexible substrate. A supporting layer is located at a side of the flexible substrate facing away from the plurality of display pixels and includes a first supporting layer corresponding to the first portion and a second supporting area corresponding to the second portion. A thickness of the first supporting layer is T1, a thickness of the second supporting layer is T2, and a width of the bending portion is W, wherein W ? ( 2 ? T + T ? ? 1 + T ? ? 2 ) ? ? 2 . Therefore, a narrow border is achieved, and the problem of interference during bending is alleviated.