39results about How to "Blocking injection" patented technology

The invention discloses a quantum dot light-emitting diode (QLED) and a preparation method therefor, and a display, and aims to block electron injection in the QLED, strengthen carrier injection balance in the QLED, improve optical output efficiency and resistance to water and oxygen erosion of a device in the QLED, and improve the luminance, working efficiency and service life of the QLED. The invention provides the QLED, wherein the QLED comprises a first electrode layer, a second electrode layer, a hole transport layer arranged between the first electrode layer and the second electrode layer, a quantum dot light-emitting layer arranged between the hole transport layer and the second electrode layer, an electron transport layer arranged between the quantum dot light-emitting layer and the second electrode layer, and an electron buffer layer arranged between the electron transport layer and the second electrode layer.

The invention discloses an LED epitaxial structure. The LED epitaxial structure comprises a substrate, a buffer layer, a u type gallium nitride layer, an n type gallium nitride layer, an electron barrier layer, a multiple-quantum well layer and a p type gallium nitride layer, wherein the substrate, the buffer layer, the u type gallium nitride layer, the n type gallium nitride layer, the electron barrier layer, the multiple-quantum well layer and the p type gallium nitride layer are arranged in a stacked mode in sequence from bottom to top. According to the LED epitaxial structure, due to the fact that the electron barrier layer is arranged between the n type gallium nitride layer and the multiple-quantum well layer, electron injection is effectively stopped, electron leakage is reduced, hole injection is increased, and thus the luminous efficiency is improved; due to the fact that an n type AlGaN / GaN superlattice structure is inserted in the space between an n type GaN layer and an active area to replace the AlGaNEBL in a traditional structure, electron injection is effectively stopped, electron leakage is reduced, hole injection is increased, and thus the luminous efficiency is further improved. The LED epitaxial structure can be widely applied to the LED field.

The invention discloses an ABO3 / TiO2 / MgO / III-V group nitride semiconductor heterostructure and a preparation method, relating to the field of microelectronic materials. The semiconductor heterostructure comprises a semiconductor substrate and an ABO3 perovskite structure functional oxide film. The semiconductor heterostructure is characterized in that a compound buffer layer formed by a TiO2 template layer of a nano thickness and an MgO barrier layer is arranged between the substrate and the functional oxide film. The TiO2 / MgO compound buffer layer with good epitaxial quality is prepared on a GaN epitaxial wafer through a mode of laser molecular beam epitaxy at low temperature for the first time by the invention, wherein the MgO layer has the effect of the barrier layer, and the TiO2 is used as the template layer and can effectively induce the epitaxial growth of the ABO3 film.

An embodiment of the invention provides a portable medical monitor correcting device. The portable medical monitor correcting device comprises a support, color sensors, a wired communication portion and a controller. The support is arranged on the upper portion of the front of a medical monitor and covers the front of the monitor. At least 5 color sensors are arranged on the support, particularly on a face opposite to the monitor and used for detecting a color value and luminance value of the monitor. The wired communication portion is connected with the monitor through a communication cable to execute wired communication. The controller uses the color sensors to detect the color value and the luminance value, calculates a color space, and compares the color space with a preset standard value. According to the comparing result, by means of the wired communication portion, commands and correcting data required by correcting the picture quality of the monitor are sent to and received from the monitor.

The invention discloses a solar heat insulation wall, relates to a wall body and aims at providing the solar heat insulation wall capable of utilizing solar energy to heat a house. The solar heat insulation wall comprises a main wall body, and a heat radiation plate, a heat insulation plate and a lighting plate are sequentially fixedly arranged outside the main wall body from inside to outside, wherein a heat absorption coating is coated on the outer surface of the heat insulation plate. The solar heat insulation wall has a simple structure, low cost and good lighting, can effectively utilize the solar energy to heat the house and has the advantage of good heat insulation effect; and simultaneously, a louver type sun visor is arranged outside the solar heat insulation wall, so that sunlight can be blocked from irradiating onto the lighting plate.

The invention relates to a micro-lens assembly, a preparation method, an optical fingerprint module and an electronic device. The micro-lens assembly includes a transparent substrate; an imprinting base which is arranged on the transparent substrate, wherein bulges are arranged on the surface, far away from the transparent substrate, of the imprinting substrate, and a plurality of non-communicatedrecesses are defined by the bulges; a micro-lens array which comprises a plurality of micro-lenses which are arranged on the surface, far away from the transparent substrate, of the imprinting base and are arranged in an array, wherein the micro-lenses are in one-to-one correspondence with the recesses, and the micro-lenses are located in the recesses; a shading layer which completely covers thepart, which is not covered by the micro lenses, of the imprinting substrate and partially covers the micro-lenses; a shading layer which is provided with a plurality of hollow structures in one-to-onecorrespondence with the micro-lenses; in the direction perpendicular to the working surface, the central axis of the hollow structure is collinear with the central axis of the corresponding micro-lenses; in the direction perpendicular to the working face, the projection of the hollow structure on the micro-lenses completely falls on the micro-lenses, and a gap is formed between the projection ofthe hollow structure and the edge of the micro-lenses.

The invention provides a ventilation device of a temperature sensor for meteorological measurement. The ventilation device comprises an anti-radiation cover and a circular truncated cone structure, cattle horn-shaped ventilating pipelines are arranged in the anti-radiation cover and used for ventilating the anti-radiation cover; the number of the ventilation pipelines is at least four, each ventilation pipeline comprises an inlet and an outlet, the inlets are formed in a side wall of the anti-radiation cover, the diameters of the ventilation pipelines are gradually reduced from the inlets to the outlets, and the outlets are located below the inlets; a temperature sensor probe is arranged at the central position of each outlet; and an inner wall of the ventilation pipeline is uniformly coated with a black anti-reflection layer. According to the ventilation device of the temperature sensor for meteorological measurement provided by the invention, the cattle horn-shaped ventilation pipelines arranged on the anti-radiation cover can promote the flow of airflow in the anti-radiation cover, so that the radiation temperature rise of the anti-radiation cover is greatly reduced.

The invention discloses an acid mixing system of lead-acid storage batteries. The acid mixing system comprises an acid preparing tank, a cooling device and an acid preparing pump. An acid injecting tube, an acid liquor outlet tube, an acid liquor return tube and a liquidometer are arranged on the acid preparing tank. A mixer is arranged close to the bottom in the acid preparing tank. An exhaust device is arranged on the acid injecting tube. A pressure emptying device is arranged on the liquidometer. An acid liquor concentration detecting device is arranged on the acid liquor return tube. By the arrangement of the mixer, the mixing can be uniform. By the adding of the exhaust device, air in the acid injecting tube is prevented from forming air block which blocks the smooth injection of concentrated acid. By the adding of the pressure emptying device, the accuracy of the measurement is ensured. By the arrangement of the concentration detecting device, redundant mixed cycle is avoided on the premise that the accuracy of the measurement is further ensured, and the production efficiency is ensured.

An embodiment of the invention provides a liquid crystal display panel and a display device thereof and relates to the technical field of display. Color mixing degree of high-brightness subpixels andadjacent subpixels can be lowered, so that display color offset is improved. The liquid crystal display panel comprises first metal signal lines extending along a second direction, and each first metal signal line is a touch signal line and / or a nominal touch signal line; in a first direction, the first metal signal lines are adjacent to the high-brightness subpixels and color subpixels; each first metal signal line comprises a widening portion between the corresponding high-brightness subpixel and the corresponding color subpixel which are adjacent and further comprises a non-widening portionbetween two adjacent color subpixels, and width of each widening portion in the first direction is greater than that of the corresponding non-widening portion in the first direction.

The invention provides a light-type drop-resistant VR glasses. The light-type drop-resistant VR glasses includes an outer shell, an image playback device arranged in the outer shell, wherein the outershell is in a bathtub shape, the outer shell includes an outer film and an inner film, an inflation sandwich layer is formed between the outer film and the inner film, black light-blocking layers areboth arranged on the outer film and the inner film, and an opening is formed in the surface, facing a human body face part, of the outer shell; the image playback device includes a VR lens mounting plate, a playback panel is arranged on the surface, back to the human body face part, of the VR lens mounting plate, supporting columns extend in the direction towards the human body face part, are arranged on the surface, facing the human body face part, of the VR lens mounting plate and are evenly arranged in the circumferential direction of the outer edge of the VR lens mounting plate, supporting rings used for being connected with all the supporting columns are arranged at the tail ends of the supporting columns, and the outlines of the supporting rings coincide with the outer outline of the VR lens mounting plate; and the image playback device is placed in the opening of the outer shell. The light-type drop-resistant VR glasses has the advantages that wearing is comfortable, the weightis light, and the drop-resistant effect is good.

The invention provides a macromolecular dispersed liquid crystal light-dimming structure. The structure comprises a liquid crystal modulation layer, a first anti-infrared light-pervious conducting layer, a second anti-infrared light-pervious conducting layer, a first light-pervious substrate and a second light-pervious substrate. The first anti-infrared light-pervious conducting layer and the second anti-infrared light-pervious conducting layer are arranged on the two sides of the liquid crystal modulation layer, the first light-pervious substrate is arranged on one side, away from the liquid crystal modulation layer, the first anti-infrared light-pervious conducting layer, the second light-pervious substrate is arranged on one side, away from the liquid crystal modulation layer, of the second anti-infrared light-pervious conducting layer. By the arrangement of the first anti-infrared light-pervious conducting layer and the second anti-infrared light-pervious conducting layer, infrared rays can be prevented from entering a room to reduce the indoor temperature, the macromolecular dispersed liquid crystal light-dimming structure can also serve as a conducting structure for energizing so as to change the transparency of the liquid crystal modulation layer, and the effect of reducing the entire thickness is achieved.

The invention discloses an organic photoelectric detector and a manufacturing method thereof. A main functional layer is prepared by solution spin coating. The method has simple process, low cost andhigh mechanical property and is suitable for preparing a flexible wearable device. Functional layer materials are all nanoparticle dispersions, solvent of the dispersions is volatile solvent, the solvent can be removed at low temperature or at room temperature after spin coating, an efficient device functional layer material is formed, the complicated process such as high vacuum evaporation or high temperature annealing crystallization is not needed, cost is low, and the method is more suitable for large-scale manufacturing. The active layer organic material is a bulk heterojunction PN-junction material, and the material can be in effective contact with a variety of functional layer materials and can form function matching with the functional layer material. The method is advantaged in that the method is simple, preparation can be achieved at low temperature or at room temperature, the process requirements are low, cost is low, mechanical performance is good, and the method is suitablefor preparing rigid and flexible substrate devices.

The invention relates to a pipe body structure of an anti-aging plastic pipe or an anti-aging plastic pipe connector, comprising an integrated main pipe body molded by plastics. The anti-aging plastic pipe or anti-aging plastic pipe connector is characterized in that the outer side of the main pipe body is composited with an ultraviolet-proof layer which is mixed with glass powder in a certain proportion, and the outer side of the ultraviolet-proof layer is composited with a protection layer. The anti-aging plastic pipe or anti-aging plastic pipe connector has the advantages that the black ultraviolet-proof layer with glass powder can block the incidence of any light ray, especially ultraviolet rays, so that the aging of the main pipe body, caused by the ultraviolet light, is avoided, the aging rate is obviously reduced, and the service life is prolonged; the anti-aging plastic pipe has the anti-flaming function and can resist low flame ignited by hay, and the strength of the pipe body is increased; and the anti-aging plastic pipe is not molded at the temperature of melting glass, and the processing temperature is reduced, therefore, the normal blow molding technology can be adopted to process and form the ultraviolet-proof layer, and the production efficiency is increased.

The invention discloses a composite material, a preparation method thereof and a quantum dot light-emitting diode, wherein the preparation method comprises the following steps of: dispersing zinc oxide particles in a first polar solvent to prepare a zinc oxide solution; and under an inert atmosphere, adding an N-vinylpyrrolidone solution and an initiator into the zinc oxide solution, and carryingout heating treatment to coat the surfaces of the zinc oxide particles with polyvinylpyrrolidone generated by the reaction, thereby obtaining the composite material. According to the invention, the zinc oxide particles are isolated in the PVP grids to realize coating of the zinc oxide particles, and the isolation of the PVP grids can effectively cover dangling bonds like hydroxyl, carboxyl and thelike on the surfaces of the zinc oxide particles, so that the sensitivity of zinc oxide to water and oxygen in air is improved, and the stability of a zinc oxide film and a QLED device is improved; the isolation of the PVP grids can also isolate adjacent zinc oxide particles, so that the zinc oxide particles are prevented from being agglomerated, and the film forming uniformity is ensured.

The invention relates to a preparation method of a high-stability inorganic hole transport film capable of realizing large-scale production, which comprises the following steps of (1) dissolving a bivalent copper source, a trivalent iron source and a trivalent chromium source in deionized water, uniformly stirring, adding an alkali source, stirring for 15-30 minutes, and transferring the mixed solution into a reaction kettle to perform hydrothermal reaction, (2) adding diluted hydrochloric acid into the product obtained in the step (1) to adjust the pH value of the solution to 6.5-7.5, then centrifugally cleaning the product with deionized water and ethanol in sequence, and dispersing the cleaned product into an alcohol organic solvent to prepare a Fe-CuCrO2 colloidal solution, and (3) transferring the colloidal solution obtained in the step (2) into a spray gun, spraying the colloidal solution on the surface of a preheated conductive substrate, controlling the spraying time to obtainfilms with different layer thicknesses, and heating and annealing to obtain the film. Compared with the prior art, the method has the advantages that the process is simple, raw materials are easy to obtain, the cost is low, the energy consumption is low, large-scale production can be achieved, the obtained Fe-CuCrO2 film is high in stability, the hole extraction rate can be increased, and meanwhile electron injection is effectively blocked.

The invention provides a cover plate component, applied to a camera component. The camera component comprises a circuit board and a flashlight arranged on the circuit board, wherein the cover plate component comprises a main body and a hollow elastic supporting element; a flashlight lens is arranged on the main body, and the flashlight lens is used for enabling the light emitted by the flashlightto pass through; and the elastic supporting element is elastically supported between the main body and the circuit board, the elastic supporting element, the main body, the flashlight lens and the circuit board enclose an isolation cavity, the isolation cavity is used for holding and isolating the flashlight, so that the light emitted by the flashlight can only be emitted from the flashlight lens.The invention further provides a camera component and a terminal device. The scheme of the invention can block the light emitted by the flashlight from entering the camera.

The invention relates to the technical field of liquid level measurement, particularly to a reservoir liquid level measuring device capable of preventing water from overflowing. The reservoir liquid level measuring device is characterized in that a water injection channel is fixedly connected to the top end of the interior of an outer reservoir, supporting plates are fixedly connected to the positions, located on the two sides of the water injection channel, of the inner wall of the outer reservoir, a first spring is fixedly connected to one end of the supporting plate, a limiting plate is fixedly connected to the position, located on the outer wall of the water injection channel, of one end of the first spring, fixing plates are fixedly connected to the inner walls of the two sides of theouter reservoir, rollers are movably connected to one ends of the fixing plates, fixing shafts are fixedly connected to the front outer surfaces and the rear outer surfaces of the rollers, and firstconnecting rods are fixedly connected to the outer surfaces of the fixing shafts and located on the rear sides of the rollers. According to the invention, according to gradual upward movement of the water level, the prompting plates at the corresponding positions sequentially extend towards the outer surface of the outer reservoir from bottom to top, so that the effect of prompting the water levelheight is achieved, and the water level can be conveniently monitored in real time.

The invention provides a bag type shampoo liquid filling system. The bag type shampoo liquid filling system comprises unsealed bag preparation equipment and distracting equipment, wherein the unsealed bag preparation equipment comprises a plurality of distracting pieces. Each of the distracting pieces comprises a housing of a square barrel structure, a permanent magnet is arranged in a sealed end of the housing, a closing block is arranged in the unsealed end of the housing, and the closing block is prepared from a foam material; a first conveyor belt which inputs the districting pieces is vertically arranged on the ground, a second conveyor belt is vertically arranged on one side of the output end of the first conveyor belt, the conveying direction of the second conveyor belt is vertical to that of the first conveyor belt, a supporting desk is vertically arranged on the other side of the output end of the first conveyor belt, and a first air cylinder is mounted on the supporting desk; the distracting equipment comprises a third conveyor belt and a clamp, wherein the third conveyor belt is vertically arranged next to the second conveyor belt, and the position of the input end of the third conveyor belt is lower than that of the output end of the second conveyor belt. The bag type shampoo liquid filling system provided by the invention solves the problem that in the prior art, people have no idea of distracting a bag so as to fill a shampoo liquid conveniently.

The invention discloses an aging-prevention irrigation water pipe and a manufacturing method thereof. The aging-prevention irrigation water pipe comprises a water pipe main body made of plastic, wherein a layer of glass fiber cloth wraps outside the water pipe main body and a protection layer is compounded outside the layer of glass fiber cloth. The manufacturing method comprises the steps of wrapping the layer of glass fiber cloth formed by weaving glass fiber filaments outside the water pipe main body while the water main body is extruded by an extruder, and instantly molding the protection layer outside the glass fiber cloth by extruding. The aging-prevention irrigation water pipe and the manufacturing method thereof disclosed by the invention have the beneficial effects of improving the strength of the pipe body, shielding the incidence of ultraviolet, obviously reducing the aging speed, prolonging the service life, and achieving the functions of resisting burning, resisting small fire ignited by hay and preventing the aging speeding caused by the small fire, in addition, the protection layer can protect the glass fiber cloth to prevent external force (generated by factors such as falling and rolling of rocks or branches) from damaging the glass fiber cloth on one hand, and can shield various external harmful factors (such as the ultraviolet) on the other hand, thereby preventing such factors from damaging the water pipe main body and further prolonging the service life.

The invention provides a structure for reducing leakage in a gallium nitride-based epitaxial layer and a preparation method thereof. The structure for reducing leakage in the gallium nitride-based epitaxial layer prepared by an epitaxial method includes: a substrate; a nucleation layer, disposed on an upper surface of the substrate; a stress and defect control layer disposed on the upper surface of the nucleation layer; a lower buffer layer disposed on the upper surface of the stress and defect control layer; an electron blocking layer disposed on the upper surface of the lower buffer layer; an upper buffer layer disposed on the upper surface of the electron blocking layer; a channel layer disposed on the upper surface of the upper buffer layer; and a barrier layer disposed on the upper surface of the channel layer. By using the structure, the electron blocking layer is introduced in the upper buffer layer and the lower buffer layer, the barrier property of the electron blocking layercan be utilized to effectively block injection of electrons into the upper buffer layer, thereby effectively reducing the longitudinal leakage current in the gallium nitride-based epitaxial layer andimproving the reliability of the gallium nitride-based epitaxial layer.

The invention relates to a natural ventilation device for a building. The natural ventilation device for the building mainly comprises a top end exhaust system, an upper slope exhaust system and an upper plane exhaust system. According to the structural design of the three sets of exhaust systems, the three sets of exhaust systems are mainly erected at the joint of bevel edges of a roof, the slope of the roof or the plane of the roof, exhaust outlets are formed in the arranged positions, outer exhaust outlets are formed in the uppermost ends of the exhaust systems, and long and short baffles are additionally arranged among the outer exhaust outlets; a plurality of water guiding plates are arranged at the lower ends of the outer exhaust outlets, the water guiding plates can be single water guiding plates or double water guiding plates or the double water guiding plates are matched with a plurality of auxiliary guiding plates, and water outlet structures are formed in the positions, connected with an outer cover body, of the water guiding plates. Therefore, according to the natural ventilation device for the building, hot air in the building is naturally exhausted, more than half of rainwater can be effectively prevented from being directly sprayed into an exhaust device through the design of file plates of the exhaust systems, and a good waterproof effect can be achieved by matching with the drainage design of the guiding plates.

The invention discloses an outdoor mosquito repelling type semiconductor laser transmitter, which comprises a control box, wherein a transmitting tube is fixedly connected to the side wall of the control box, a circular ring is fixedly connected to the side wall of the transmitting tube, two fan-shaped cavities are symmetrically formed in the inner wall of the circular ring, fixing plates are fixedly connected to the inner walls of the fan-shaped cavities, a sliding plate is slidably connected to the inner wall of the fan-shaped cavity, a liquid storage cavity is formed between the side wall of the fixing plate and the inner wall of the fan-shaped cavity, and a driving cavity is formed among the fixing plate, the sliding plate and the inner wall of the fan-shaped cavity. According to the invention, light in the transmitting tube irradiates into the driving cavity to increase the pressure intensity in the driving cavity, the sliding plate is pushed to slide close to the inner wall of the fan-shaped cavity, then the liquid suction bag is extruded, the driving liquid in the liquid suction bag enters the atomizing tube through the one-way liquid outlet tube and is sprayed out in an atomized mode to repel mosquitoes near the transmitting tube, so that the mosquitoes are prevented from gathering near the transmitting tube to shield the transmitted laser so as to prevent the accuracyof distance measurement data from being influenced.

The invention discloses a ventilation device for a temperature sensor array, and belongs to the technical field of meteorological instruments. The device comprises a plurality of supporting columns which are parallel to one another, and the supporting columns are vertically arranged; a reflecting plate I and a reflecting plate II are respectively fixed at the head and tail ends of the plurality of supporting columns; a plurality of flow guide structures are arranged outside the whole supporting column in a sleeving manner in the length direction of the supporting column; the flow guide structure comprises two flow guide plates, each flow guide plate is in a convex circular truncated cone shape with an upper opening and a lower opening, and the two flow guide plates are symmetrically arranged; a flow guide opening is formed between the two flow guide discs, and the caliber of the flow guide opening is gradually increased from inside to outside. The drainage disc can guide airflow to enter the ventilation channel, so that the speeds of internal airflow and external airflow are basically consistent, and low-angle solar radiation in the morning and evening can be blocked.

A spanwise asymmetric pit gas film cooling hole pattern, which is used for cooling gas turbine turbine blades, especially turbine moving blades, is characterized in that: the gas film cooling hole pattern is based on a cylindrical hole, and the cylindrical hole exits There is a spanwise asymmetric pit structure along the spanwise direction of the centerline of the cylindrical hole. The invention obtains an asymmetrical air film cooling structure of the pit by adjusting the depth of the pit structure, increasing the expansion width of the downstream side of the vertical cross flow of the pit structure, and moving the boss to the downstream side of the inner cooling vertical cross flow. Increase the spanwise width of the outlet side of the downstream side of the internal cooling vertical cross flow, and reasonably adjust the spanwise position of the boss to effectively block the high-momentum cooling jet on the downstream side of the internal cooling vertical cross flow and reduce the height of the cold air injected into the mainstream, so as to solve the problem. The problems of uneven spanwise distribution of the cooling jet under the condition of vertical internal cooling and cross flow, and low cooling efficiency.

The invention discloses an ABO3 / TiO2 / MgO / III-V group nitride semiconductor heterostructure and a preparation method, relating to the field of microelectronic materials. The semiconductor heterostructure comprises a semiconductor substrate and an ABO3 perovskite structure functional oxide film. The semiconductor heterostructure is characterized in that a compound buffer layer formed by a TiO2 template layer of a nano thickness and an MgO barrier layer is arranged between the substrate and the functional oxide film. The TiO2 / MgO compound buffer layer with good epitaxial quality is prepared on aGaN epitaxial wafer through a mode of laser molecular beam epitaxy at low temperature for the first time by the invention, wherein the MgO layer has the effect of the barrier layer, and the TiO2 is used as the template layer and can effectively induce the epitaxial growth of the ABO3 film.

The invention discloses a nano silicon / crystalline silicon / nano silicon diode with P<+> type nano silicon carbide embedded a cathode junction. The nano silicon / crystalline silicon / nano silicon diode structurally comprises an anode ohmic electrode, a P<+> type nano silicon layer, an N<-> type crystalline silicon substrate, an N<+> type nano silicon layer and a cathode ohmic electrode; the cathode heterogeneous junction is formed between the N<-> type crystalline silicon substrate and the N<+> type nano silicon layer; and the P<+> type nano silicon carbide is embedded in the cathode junction. The P<+> type semiconductor is embedded into one side of the base region of the cathode junction, and therefore, reverse surge current can be suppressed, and damage to a device, caused by current filaments which are brought about by a destructive double-positive feedback dynamic avalanche effect occurring on the diode, can be avoided.

The present invention proposes a kind of lightweight anti-drop VR glasses, which includes a shell and an image playback device arranged in the shell. The shell is in the shape of a bathtub, and the shell includes an outer membrane and an inner membrane. An inflatable interlayer is formed, the outer film and the inner film are provided with a black light-blocking layer, and the outer shell is provided with an opening on the side facing the face of the human body; the image playback device includes a VR lens mounting plate, and the VR lens mounting plate faces away from the One side of the face of the human body is provided with a playback panel, and the outer edge of the side of the VR lens mounting plate facing the face of the human body is provided with support columns extending towards the direction of the human face and evenly distributed along the circumferential direction of the outer edge of the VR lens mounting plate. The end of the support column is provided with a support ring which connects each support column and whose contour is consistent with the outer contour of the VR lens mounting plate; the image playing device is placed in the opening of the shell. The invention has the advantages of comfortable wearing, light weight and good anti-drop effect.

The invention discloses a nano silicon / crystalline silicon / nano silicon diode with P<+> type nano silicon carbide embedded a cathode junction. The nano silicon / crystalline silicon / nano silicon diode structurally comprises an anode ohmic electrode, a P<+> type nano silicon layer, an N<-> type crystalline silicon substrate, an N<+> type nano silicon layer and a cathode ohmic electrode; the cathode heterogeneous junction is formed between the N<-> type crystalline silicon substrate and the N<+> type nano silicon layer; and the P<+> type nano silicon carbide is embedded in the cathode junction. The P<+> type semiconductor is embedded into one side of the base region of the cathode junction, and therefore, reverse surge current can be suppressed, and damage to a device, caused by current filaments which are brought about by a destructive double-positive feedback dynamic avalanche effect occurring on the diode, can be avoided.

The invention relates to an anti-aging plastic pipe or an anti-aging plastic pipe connector, comprising an integrated main pipe body molded by plastics. The anti-aging plastic pipe or anti-aging plastic pipe connector is characterized in that the outer side of the main pipe body is composited with an ultraviolet-proof layer which is mixed with glass powder in a certain proportion, and the outer side of the ultraviolet-proof layer is composited with a protection layer. The anti-aging plastic pipe or anti-aging plastic pipe connector has the advantages that the black ultraviolet-proof layer with glass powder can block the incidence of any light ray, especially ultraviolet rays, so that the aging of the main pipe body, caused by the ultraviolet light, is avoided, the aging rate is obviously reduced, and the service life is prolonged; the anti-aging plastic pipe has the anti-flaming function and can resist low flame ignited by hay, and the strength of the pipe body is increased; and the anti-aging plastic pipe is not molded at the temperature of melting glass, and the processing temperature is reduced, therefore, the normal blow molding technology can be adopted to process and form the ultraviolet-proof layer, and the production efficiency is increased.

The invention discloses an HEMT epitaxial structure with low buffer layer leakage current. The HEMT epitaxial structure comprises a silicon substrate, an AlN nucleating layer, a back barrier electron barrier layer, a stress regulation and control layer, a GaN high-resistance layer, a GaN channel layer and a barrier layer which are sequentially arranged from bottom to top, the silicon substrate comprises a first sub-substrate, a second sub-substrate and a third sub-substrate which are sequentially arranged from bottom to top; and the back barrier electron barrier layer is of a periodically epitaxial Al < x > Ga < 1-x > N / Al < y > Ga < 1-y > N superlattice structure. The invention also provides an HEMT device with low buffer layer leakage current. According to the invention, the first sub-substrate and the second sub-substrate are contacted to form a PN junction, and an inversion electron layer is prevented from being formed on the interface of the silicon substrate and the AlN nucleating layer, so that electrons of the silicon substrate are prevented from entering the stress regulation and control layer, and the electric leakage of the buffer layer is reduced. Meanwhile, the back barrier electron barrier layer with the superlattice structure can effectively improve the barrier between the interface of the AlN / Si substrate and the stress regulation and control layer, prevents substrate electrons from being injected into the stress regulation and control layer, and reduces the electric leakage of the stress regulation and control layer.