Abstract: A mask (3), an LED module and a display screen, wherein the mask (3) is integrally in a grid structure and includes a plurality of grid units (31), each grid unit (31) is enclosed by a retaining wall (311), one end of the retaining wall (311) extends outwards the direction close to the center of the grid unit (31) and is provided with a support edge (312), and the outer side of the support edge (312) is provided with a support plane.

Abstract: Provided are an LED display pixel structure, an LED display module, and an LED display screen. The LED display pixel structure includes an LED pixel unit (1) and a layered extraction structure arranged above the LED pixel unit (1). The layered extraction structure is configured to receive light from the LED pixel unit (1) and emit the light. The LED display pixel structure includes a first retardation film layer (31), a linear polarizer (32), and a second retardation film layer (33), which are sequentially stacked. The light emitted by the LED pixel unit (1) sequentially passes through the first retardation film layer (31), the linear polarizer (32), and the second retardation film layer (33). The first retardation film layer (31) and the second retardation film layer (33) are quarter-wave plates.

Abstract: A semiconductor structure includes a peripheral region and an array region. A substrate is provided. An active layer is provided in the substrate corresponding to the peripheral region. A word line groove is formed in the substrate corresponding to the array region. A word line is formed in the word line groove. The word line includes a first word line conductive layer and a second word line conductive layer with one stacked on another. A top of the first word line conductive layer is a protrusion. The protrusion protrudes along a direction pointing from the first word line conductive layer to the second word line conductive layer. An isolation layer covering the substrate is formed. A first through hole and a second through hole both penetrating through the isolation layer are formed simultaneously. The first through hole exposes the active layer. The second through hole exposes the protrusion.

Abstract: The present application relates to the technical field of directional drill rod assembly, and discloses methods for mounting and testing a central communication cable assembly of a directional drill rod, the mounting method including: according to drawing requirements, mounting an O-shaped sealing member in a sealing groove of an insulating male connector, an insulating female connector, a communication cable direct connector and a communication cable tapered connector, and processing, connecting, and mounting the various components. By means of the method, the central communication cable assembly of a directional drill rod is mounted, and the product quality stability is good.

Abstract: A display substrate and a method for manufacturing the same. The display substrate includes a base substrate, a buffer layer, and pixel units; the pixel units constitute multiple first pixel unit groups in a second direction, and multiple second pixel unit groups in a first direction; each first pixel unit group includes multiple pixel units in the first direction, each second pixel unit group includes multiple pixel units in the second direction; each pixel unit includes at least one thin film transistor; a gate electrode of each thin film transistor is farther away from the base substrate than an active layer thereof, an orthographic projection of the active layer on the base substrate covers of the gate electrode on the base substrate; the gate electrodes of the thin film transistors of adjacent pixel units in each first pixel unit group are electrically connected through a bridge structure.

Abstract: A smart fluid system includes a fire hydrant that includes a nozzle and a nozzle cap assembly. The nozzle cap assembly includes a nut mounted on the nozzle and positioned at a first end of the nozzle cap assembly; a base positioned at a second end of the nozzle cap assembly opposite the first end, the nozzle received by the base to secure the nozzle cap assembly to the fire hydrant; an enclosure coupled to the nut and positioned between the nut and the base, the enclosure defining a cavity; and an antenna, a modem, and a power source positioned within the cavity, the modem connected in electrical communication with the antenna and the power source.

Abstract: Provided is an array substrate. The array substrate us provided with a display region and a non-display region on a periphery of the display region, and includes: a base substrate; a pixel electrode and a thin-film transistor on a side of the base substrate, wherein the pixel electrode and the thin-film transistor are disposed in the display region, and the pixel electrode is disposed on a side, facing away from the base substrate, of the thin-film transistor; a first passivation layer between the pixel electrode and the thin-film transistor, wherein a plurality of first vias are defined in the first passivation layer; and a second passivation layer on a side, facing away from the base substrate, of the pixel electrode, wherein a plurality of second vias are defined in the second passivation layer.

Abstract: Provided is a thin-film transistor. The thin-film transistor includes: a gate, a first insulative layer, a semiconductor layer, a source and drain layer, a semiconductor modification layer, and a second insulative layer that are disposed on a base substrate and sequentially laminated in a direction away from the base substrate; wherein the source and drain layer includes a source and a drain that are spaced apart and both connected to the semiconductor layer, a portion of the semiconductor layer is exposed from a gap between the source and the drain, and the semiconductor modification layer at least covers the portion of the semiconductor layer exposed from the gap; and a concentration of hydrogen in the semiconductor layer is greater than a concentration threshold, and a temperature of a reaction chamber in manufacturing the thin-film transistor is less than a temperature threshold.

Abstract: Provided is an array substrate. The array substrate us provided with a display region and a non-display region on a periphery of the display region, and includes: a base substrate; a pixel electrode and a thin-film transistor on a side of the base substrate, wherein the pixel electrode and the thin-film transistor are disposed in the display region, and the pixel electrode is disposed on a side, facing away from the base substrate, of the thin-film transistor; a first passivation layer between the pixel electrode and the thin-film transistor, wherein a plurality of first vias are defined in the first passivation layer; and a second passivation layer on a side, facing away from the base substrate, of the pixel electrode, wherein a plurality of second vias are defined in the second passivation layer.

Abstract: A nozzle cap assembly includes a nut positioned at a first end of the nozzle cap assembly; a base positioned at a second end of the nozzle cap assembly, the base configured to mount on a nozzle of a fire hydrant; an enclosure positioned between the nut and the base, the enclosure defining a cavity; and an antenna, a modem, and a power source positioned within the cavity, the modem connected in electrical communication with the antenna and the power source.

Abstract: The present application relates to the technical field of directional drill rod assembly, and discloses methods for mounting and testing a central communication cable assembly of a directional drill rod, the mounting method including: according to drawing requirements, mounting an O-shaped sealing member in a sealing groove of an insulating male connector, an insulating female connector, a communication cable direct connector and a communication cable tapered connector, and processing, connecting, and mounting the various components. By means of the method, the central communication cable assembly of a directional drill rod is mounted, and the product quality stability is good.

Abstract: A composite polyester hot-melt adhesive, a preparation method thereof and a preparation method of an anti-scouring geotextile are provided. The preparation method of the composite polyester hot-melt adhesive includes the following steps: performing an esterification reaction on a dibasic acid and a dihydric alcohol under a protection of nitrogen and an action of a titanium/cobalt composite catalyst, adding a stabilizer for a polycondensation reaction to obtain a polyester hot-melt adhesive, then adding polymethyl methacrylate (PMMA) microspheres for mixing and stirring to obtain the composite polyester hot-melt adhesive. The anti-scouring geotextile is obtained by bonding a polyethylene terephthalate woven fabric with a polypropylene geotextile by the composite polyester hot-melt adhesive.

Abstract: A method for testing the nanomechanical properties of natural gas hydrate samples is provided. A dry pure nitrogen environment and a partial ultralow-temperature liquid nitrogen test condition are constructed, a micro-positive pressure state in a glovebox is maintained, and the temperature of a milling tool and a sample stand are maintained consistent; then, a hydrate sample is transferred and installed in the dry nitrogen environment, and the milling tool is driven to cut a surface of the natural gas hydrate sample to form a relatively flat surface; next, indentation parameter reliability testing is performed, an indentation load is changed, indentation testing of indentation points is performed, and an indentation form is observed. The method can realize indentation testing of natural gas hydrate samples in an ultralow-temperature and dry environment by means of a nanoindenter.

Abstract: The invention provides a lithium-ion battery electrode piece and a lithium-ion battery including the same. The electrode piece includes an electrode active material layer disposed on the surface of the current collector and a protective layer disposed on the surface of the electrode active material layer. The protective layer is composed of metal oxide layers and conductive layers alternately stacked in the horizontal direction. The area ratio of the metal oxide layers to the conductive layers is 4:1-1:4, and the thickness ratio is 0.5:1-1:1. According to the invention, by regulating the shape and ratio of the high temperature stability material and the conductive active material on the electrode piece in the process of coating the protective layer, the amount of the two coating materials is precisely controlled to implement the precise regulation of the high temperature stability and rate performance of the electrode piece.

Abstract: A semiconductor structure includes a peripheral region and an array region. A substrate is provided. An active layer is provided in the substrate corresponding to the peripheral region. A word line groove is formed in the substrate corresponding to the array region. A word line is formed in the word line groove. The word line includes a first word line conductive layer and a second word line conductive layer with one stacked on another. A top of the first word line conductive layer is a protrusion. The protrusion protrudes along a direction pointing from the first word line conductive layer to the second word line conductive layer. An isolation layer covering the substrate is formed. A first through hole and a second through hole both penetrating through the isolation layer are formed simultaneously. The first through hole exposes the active layer. The second through hole exposes the protrusion.

Abstract: A sensing device for a hydrant in a fluid distribution system configured to transport a fluid can include a housing defining a portion of an operating stem of the hydrant; a vein connected to the housing, the vein defining a channel; and a sensor received at least partly and within the channel of the vein and configured to measure at least two properties of the fluid.

Abstract: A nozzle cap assembly can include a nozzle cap body defining a top end and a bottom end, the nozzle cap body defining a base positioned at the top end and a curved side wall extend from the base down to the bottom end; an enclosure coupled to the top end, the enclosure rotationally fixed relative to the nozzle cap body, the enclosure at least partially defining an enclosure cavity; and a nut base positioned opposite from the nozzle cap body, the enclosure positioned between the nut base and the base.

Abstract: A mask (3), an LED module and a display screen, wherein the mask (3) is integrally in a grid structure and includes a plurality of grid units (31), each grid unit (31) is enclosed by a retaining wall (311), one end of the retaining wall (311) extends outwards the direction close to the center of the grid unit (31) and is provided with a support edge (312), and the outer side of the support edge (312) is provided with a support plane.

Abstract: A nozzle cap assembly can include a nozzle cap body defining a top end and a bottom end, the nozzle cap body defining a base positioned at the top end and a curved side wall extend from the base down to the bottom end; an enclosure coupled to the top end, the enclosure rotationally fixed relative to the nozzle cap body, the enclosure at least partially defining an enclosure cavity; and a nut base positioned opposite from the nozzle cap body, the enclosure positioned between the nut base and the base.

Abstract: A nozzle cap assembly can include a nozzle cap body defining a top end and a bottom end, the nozzle cap body defining a base positioned at the top end and a curved side wall extend from the base down to the bottom end; an enclosure coupled to the top end, the enclosure rotationally fixed relative to the nozzle cap body, the enclosure at least partially defining an enclosure cavity; and a nut base positioned opposite from the nozzle cap body, the enclosure positioned between the nut base and the base.