12results about How to "Increase potential difference" patented technology

The invention belongs to the technical field of biomedical materials, and provides an antibacterial healing-promoting hydrogel dressing which at least comprises a hydrogel layer and a drug-loaded nanofiber membrane layer, the hydrogel layer at least comprises a carrier substance and a thermocouple ion pair supply substance, and a drug-loaded nanofiber membrane at least comprises a fiber membrane carrier and drug powder. The invention also provides a preparation method of the antibacterial healing-promoting hydrogel dressing, which comprises the following steps: by taking hexafluoroisopropanol as a solvent, adding the polylactic acid-glycolic acid copolymer, the gelatin and the medicine powder to prepare a spinning solution; carrying out electrostatic spinning on the prepared spinning solution to prepare a drug-loaded nanofiber membrane; the method comprises the following steps: by taking water as a solvent, adding sodium chloride and a thermocouple ion pair supply substance, stirring until fully dissolving, adding a photo-thermal reagent, and ultrasonically dispersing uniformly to obtain a mixed solution A; preparing a polyvinyl alcohol aqueous solution, adding the polyvinyl alcohol aqueous solution into the mixed solution A, and fully stirring to obtain a hydrogel precursor mixed solution; and soaking the prepared drug-loaded nanofiber membrane into the hydrogel precursor mixed solution, and performing freeze-thaw cycle to obtain the antibacterial healing-promoting hydrogel dressing. The hydrogel with the thermoelectric effect is used in cooperation with the drug-loaded nanofiber membrane, drug release of the drug-loaded nanofiber membrane layer is promoted, and therefore wound healing is promoted.

The invention discloses a copper-molybdenum lamination etching liquid composition for a panel, which comprises the following components in percentage by mass: 5 to 20 percent of hydrogen peroxide, 5 to 13 percent of organic carboxylic acid, 5 to 13 percent of organic alkali, 0 to 0.4 percent of electrochemical copper inhibitor, 0 to 2 percent of hydrogen peroxide stabilizer, 0 to 0.4 percent of organic phosphonic acid containing hydroxyl and / or amino substituted carbon atoms, and 50 to 83 percent of deionized water. According to the copper-molybdenum lamination etching liquid composition for the panel, a predetermined content of organic phosphonic acid containing hydroxyl and / or amino substituted carbon atoms is added, and the organic phosphonic acid and the electrochemical copper inhibitor are used for optimizing the potential difference between copper and molybdenum together, so that the undercut problem caused by the increase of over-etching time is solved. The invention further discloses an etching method based on the copper-molybdenum lamination etching liquid composition for the panel.

An electric connector comprises a terminal assembly which is provided with an insulation part, a signal terminal fixed on the insulation part and a shielding piece with a main body part, the main body part extends to form two arm parts, and the rear sides of the arm parts are provided with guide connection ends; the serial connection piece is located on the rear sides of the multiple terminal assemblies and is provided with a serial connection end which is connected with a shielding layer of the cable in a conducting mode, the serial connection piece is provided with multiple serial connection parts with the same height, the serial connection parts and the conducting connection ends of the two arm parts form grounding conducting connection, the serial connection piece is provided with covering parts, and one covering part is located between the two serial connection parts; the covering part, the main body part of the shielding piece and the two arm parts jointly form four-side wrapping on the signal terminal; the grounding piece is located at the front sides of the plurality of terminal assemblies and is provided with a grounding end which is conductively connected with a shielding layer of the cable, the grounding piece is provided with a plurality of grounding parts with the same height, the grounding parts and the main body parts of the terminal assemblies form grounding conductively connection respectively, and the serial connection parts and the grounding parts are different in height; the guide connecting sheets are located below the terminal assemblies, and each guide connecting sheet is provided with a plurality of guide connecting parts which are electrically connected with the serial connecting piece and the grounding piece respectively.

This application provides a pixel circuit, a display panel, and a display device. The pixel circuit includes: a driving module; a bias compensation module, wherein the control terminal of the bias compensation module is electrically connected to a first control signal line, the first terminal of the bias compensation module is electrically connected to a target signal line, and the second terminal of the bias compensation module is electrically connected to either the first terminal or the second terminal of the driving module; the target signal line is electrically connected to a first periodic signal. This application can adjust the bias state of the threshold voltage of the driving module and can flexibly meet the adjustment requirements of the threshold voltage of the driving module under different conditions.

This invention discloses a display panel, its driving method, and a display device. The display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a light-emitting control module, a driving module, and a compensation module. The light-emitting control module includes a first light-emitting control module, which selectively provides a first power signal to the driving module. The driving module provides a driving current to the light-emitting element and includes a driving transistor. The compensation module compensates for the threshold voltage of the driving transistor. The operation of the pixel circuit includes a light-emitting stage and a biasing stage. In the biasing stage, the first light-emitting control module and the driving module are turned on, and the compensation module is turned off. The driving transistor is disconnected from the light-emitting element, and the first power signal is written from the source of the driving transistor to its drain to adjust the bias state of the driving transistor. This invention reduces the threshold voltage drift of the driving transistor.

The invention discloses an iron-based flow battery negative electrode electrolyte and a preparation method thereof, and belongs to the technical field of flow battery energy storage. The iron-based flow battery negative electrode electrolyte comprises iron ions, a chelating agent, a supporting electrolyte, an auxiliary electrolyte and a solvent, the chelating agent comprises any one or a combination of at least two of tris (hydroxymethyl) methylglycine, N, N-bis (2-ethoxyl) glycine and N-(2-ethoxyl) iminodiacetic acid, and the formula of the iron-based flow battery negative electrode electrolyte is improved. And a plurality of novel iron-based flow battery selection schemes are provided. The method has the advantages of simplicity in operation, easiness in large-scale production, long cycle life, low cost and the like, can be applied to solar and wind power generation systems as large-scale electric energy storage and efficient conversion equipment, and also has a wide application prospect in automobile batteries, household energy storage equipment and other small energy storage equipment.

The invention discloses a hydrogen production method for treating etching solution wastewater by using a photo-assisted single-chamber microbial electrolytic cell, and relates to the technical field of microbial electrochemistry and photocatalysis, and the hydrogen production method comprises the following steps: S1, mixing an anolyte of a stably operated double-chamber microbial fuel cell with etching solution tail end wastewater, adding the mixture into a reactor, and regularly replacing the solution until the anode potential is stable; s2, domesticating two ends of the electrode by using a direct-current power supply and external voltage until the potential of the cathode is reduced, and completing the domestication of the anode; and S3, the photocathode adopts a photocatalytic material, and organic matters are mineralized and nickel ions are removed while hydrogen is produced under an external voltage condition. The photo-assisted microbial electrolytic tank integrates the advantages of water electrolysis hydrogen production, photocatalytic hydrogen production and microbial electrolytic tank hydrogen production, overcomes the defect that a photocatalyst for photocatalytic hydrogen production is unstable, reduces the energy consumption required by microbial electrolytic tank hydrogen production, and recovers heavy metal mineralized refractory organics in etching liquid tail end wastewater. The method is a clean, efficient and low-consumption mode for treating wastewater and simultaneously producing hydrogen.

The embodiment of the present application discloses a display panel, a driving method thereof and a display device, the display panel comprising: a pixel circuit and a light emitting element; the pixel circuit comprising a data writing module, a driving module and a compensation module; the data writing module is used for selectively providing a data signal for the driving module; the driving module is used for providing a driving current for the light emitting element, and the driving module comprises a driving transistor; the compensation module is used for compensating a threshold voltage of the driving transistor; and a working process of the pixel circuit comprises a bias stage, in the bias stage, the data writing module and the driving module are turned on, and the compensation module is turned off, a data signal is written into a drain of the driving transistor, and used for adjusting a bias state of the driving transistor. In the embodiment of the present application, the bias stage is added, and the voltage of the gate, the source or the drain of the driving transistor is adjusted, so that the threshold voltage drift of the driving transistor caused by a non-bias stage is weakened.

The invention discloses a semiconductor structure and a forming method thereof, and the semiconductor structure comprises a substrate which comprises a storage region; a plurality of memory gate grooves located in the memory region, wherein the memory gate grooves are separated from each other and are paired; the storage gate structures are at least partially located in the storage gate grooves, and each storage gate structure comprises floating gate dielectric layers located on the side walls and the bottom surfaces of the storage gate grooves, floating gates at least partially located on the surfaces of the floating gate dielectric layers in the storage gate grooves, control gate dielectric layers located on the surfaces of the floating gates and control gates located on the surfaces of the control gate dielectric layers; the first doped region is positioned in the storage region between the paired storage gate structures; the erasing gate dielectric layer is positioned on the surface of the first doped region; the erasing gate is located on the surface of the erasing gate dielectric layer, and the bottom surface of the erasing gate is lower than or flush with the top surface of the floating gate; and the second doped regions are positioned in the storage regions on the two sides of the paired storage gate structures. According to the semiconductor structure and the forming method thereof, the writing efficiency and the erasing efficiency of a memory are improved.

The invention discloses a constructed wetland-microbial fuel cell system and a treatment method, and relates to the field of environmental pollution abatement, a treatment device comprises a box body and an outer resistor, the box body is of an inverted conical structure, and a substrate layer, an anode layer, a middle layer, a cathode layer and wetland plants are sequentially arranged in the box body from bottom to top; the area of the minimum horizontal section of the cathode layer is larger than that of the maximum horizontal section of the anode layer; the water inlet mechanism is connected with a first water inlet in the bottom of the box body, a first water outlet in the top of the box body is connected with a second water inlet in the bottom of the backflow filter column, and a second water outlet and a third water outlet are sequentially formed in the upper portion of the backflow filter column from top to bottom. The third water outlet is connected with a third water inlet in the bottom of the box body through a backflow mechanism, and a third water outlet valve is arranged at the third water outlet. According to the system and the treatment method, the removal rate and the electricity generation performance of nitrogen and phosphorus pollutants are improved, the size of a treatment device is reduced, and the space utilization rate is improved.

The embodiment of the utility model provides a cascading type energy storage battery cabin and an energy storage system.The cascading type energy storage battery cabin comprises a shell, a plurality of battery clusters and a plurality of installation supports, and the shell is provided with a containing space and comprises a bottom wall; the plurality of battery clusters are accommodated in the accommodating space, the plurality of battery clusters are sequentially connected in series through the connecting pieces, and the arrangement direction of the connecting piece between each battery cluster and the previous battery cluster is perpendicular to the arrangement direction of the connecting piece between each battery cluster and the next battery cluster; the plurality of mounting brackets are connected to the bottom wall, and one mounting bracket is connected with and supports one battery cluster. According to the cascade type energy storage battery cabin and the energy storage system provided by the embodiment of the invention, the potential difference between adjacent battery clusters is reduced, and the operation stability of each device is improved.

The invention provides a pixel circuit, a driving method of the pixel circuit, an array substrate and a display panel, relates to the technical field of display, and improves the ghost phenomenon. The pixel circuit comprises a driving module, a first light emitting control module and a potential adjusting module. The first end of the first light-emitting control module is connected with the first end of the driving module, and the control end of the first light-emitting control module is connected with a light-emitting control signal line; the first end of the potential adjusting module is connected with a light-emitting control signal line, and the second end of the potential adjusting module is connected with the second end of the driving module. When the light-emitting control potential in the light-emitting control signal line jumps to a high level, the potential of the second end of the driving module is coupled and lifted, so that a reverse current flowing from the second end of the driving module to the first end of the driving module is generated, and the potential of the first end of the driving module is lifted; therefore, the threshold voltages of the driving modules of the pixel circuits in different light-emitting areas of the display panel tend to be consistent, and the ghosting phenomenon is improved.