71results about How to "Reduce size area" patented technology

The invention discloses a staged-pressurization gasification reaction device for dry pulverized coal. A first burner chamber internally provided with a top-arranged process burner is arranged at the top part of the gasification reaction device; a layer of second burner chamber internally provided with a side-surface process burner is arranged on the side surface at the upper part of the gasification reaction device and along the peripheral direction; a slag hole is also arranged in the bottom of the gasification reaction device; multiple chilling gas inlets are arranged at the upper end part of a synthesis gas cooling chamber; and further, the synthesis gas cooling chamber is also provided with an inner cylinder membrane wall, an outer cylinder membrane wall and a screen wall. The invention further discloses a gasification method, which includes steps as follows: S1, gasified fuel, water vapor and oxygen are sprayed into the gasification reaction chamber for incomplete gasification reaction; S2, oxygen or oxygen rich gas and water vapor are injected into the side surface process burner so as to carry out complete gasification reaction and secondary gasification reaction; S3, gasified products enter the synthesis gas cooling chamber from the slag hole; and S4, synthesis gas is discharged from the synthesis gas cooling chamber, and ash residues are discharged into a bottom slag basin. According to the invention, the service life of the furnace liner is prolonged, and the practical operation flexibility is enhanced.

The invention provides a water drainage and gas production simulated experimental device, which is used for simulating the water drainage and gas production of coal bed gas wells or other water producing gas wells. The water drainage and gas production simulated experimental device consists of a speed reducer, a water pump, a wellhead device, a water storage device, a detection device, a casing string, a water pipe column, a drainage and mining roofbolt and a drainage and mining pump, wherein the drainage and mining roofbolt, the water pipe column and the casing string form two annular spaces; a water jacket performs deflation in the annular space while the rod and the pipe perform drainage in the annular space; physical distribution in the annular space of the water jacket realizes the study of the separation condition of two-phase flow gases; the speed reducer integrates a power machine and a transmission system and realizes the large transmission ratio and the continuous adjustmentof stroke frequency and arbitrary adjustment of which the liquor drainage volume is between 3 and 30m<3> / d and the submergence depth is between 0 and 20 meters; the detection device realizes the real-time monitoring of the liquor drainage volume, a movable liquid level, the pressure, well liquor components and the stress of rod pieces; a walking beam counterweight adopts a split structure, and the position of a crank counterweight can be adjusted continuously, so that the good balance of the water pump is realized; and a structure of a single crank, a single connecting rod and a sliding bearing is adopted to reduce the size of a complete machine.

The invention discloses a co-rectifier transformer medium voltage type regenerative braking energy feedback device and a control method thereof; the feedback device comprises a rectifier transformer,an energy feedback unit, and a rectifier unit; a grid connected switch and an isolation transformer are respectively connected in series between the energy feedback unit and a rectifier transformer valve side winding; the energy feedback unit comprises two inverters; DC sides of the two inverters are provided with a single-knife-double-end isolation switch block; the DC sides of the two invertersare connected with a DC traction network through the single-knife-double-end isolation switch block; the feedback device control method comprises the following steps: starting, running and stopping the energy feedback unit according to a first startup threshold value, a second startup threshold value, an overvoltage protection value, a stop threshold value and a current gradient determination value. The feedback device can eliminate the circulation between the energy feedback unit and the rectifier unit, has a larger feedback capacity than a low voltage feedback device, has a simplified structure when compared with a conventional medium voltage feedback device, and uses less general assembly dimensions and land occupation areas, thus reducing cost, and providing good versatility.

A package stack includes at least two packages stacked on each other. Each package has a substrate, a circuit pattern positioned on the substrate, a semiconductor chip attached to the substrate, and a number of through-vias formed on a lateral surface. A number of electrical connection members are attached to the through-vias so as to electrically connect the packages to each other. The through-vias are vertically positioned on the lateral or side surface of the packages. And a solder ball is attached to the lower surface of the substrate of the lowest package.

The invention relates to a one-way radiating furnace tube ethane cracking furnace. The cracking furnace comprises a radiating section, a convection section, a quenching furnace, a collecting pipe and an allotting pipe, wherein the radiating section is arranged at the left side of the cracking furnace, and a radiating chamber is arranged in the radiating section; a radiating furnace tube, a bottomcombustor and a side wall combustor are installed in the radiating chamber; the convection section is arranged at the upper part of the cracking furnace; a convection coil pipe is arranged at the lower part of the convection section; the quenching furnace is arranged at the top of the radiating section; the collecting pipe is arranged at the lower part of the radiating section; one end of the allotting pipe is connected with the collecting pipe, and the other end of the allotting pipe is connected with the radiating furnace tube. Compared with the prior art, the invention utilizes the furnacetube space at maximum and reduces the geometric dimension and the occupation area of the cracking furnace; the furnace tubes in adjacent groups are in a symmetrical structure so as to be uniformly heated, and the running period is prolonged; the influence of the furnace tube differential expansion on the furnace tubes can be effectively reduced and the bending degree of the furnace tubes is lightened by a bent pipe structure; and the adopted linear quenching furnace effectively blocks the secondary reaction of cracked gases and improves the yield of products.

The invention provides an expandable modular multi-channel off-line programmer. The expandable modular multi-channel off-line programmer comprises an off-line programmer main board and N off-line programmer daughter boards, wherein N is an integer larger than 1.The off-line programmer daughter boards are fixed to the off-line programmer main board in a pluggable mode. The N off-line programmer daughter boards are identical independent modules, are each provided with an independent first USB interface and an independent first SWD interface and can independently complete off-line programming of Flash3 memories of target chips and updating of source programs. The off-line programmer main board comprises a second USB interface and N second SWD interfaces, the second USB interface is connected with the first USB interfaces of the off-line programmer daughter boards, the second SWD interfaces are connected with the second SWD interfaces of the off-line programmer daughter boards, and through the off-line programmer main board, the multi-channel off-line programmer can complete transmitting and updating of source programs and off-line programming of target chips. The expandable modular multi-channel off-line programmer can break through the limitation of the number of off-line programming channels, and thus the requirement for volume production can be met in the large-scale chip programming process; due to the fact that all channels are relatively independent, module maintenance and replacement can be conveniently carried out if one channel fails.

The invention discloses a phase change storage unit based on a VOx gate tube. The storage unit comprises a lower electrode layer, a VOx gating layer, a phase change function layer and an upper electrode layer. According to the invention, by use of the VOx, the gating of the phase change function layer is achieved; storage of the data is achieved on the basis of gating of the phase change function layer; by imposing voltage on the VOx, the state switching of the VOx is controlled, so an objective that the phase change storage unit is in a non-gating state during low voltage and in a gating system during high voltage can be achieved; through the switch control of the VOx, leakage current of the a phase change memory array can be effectively reduced and enough big Reset current is provided; a high-temperature technique condition is not required; preparation technique of the phase change memory is simplified; cost is reduced; and it is possible to commercialize the highly integrated phase change memory.

The invention discloses an eight-element ultra wide band MIMO antenna. The eight-element ultra wide band MIMO antenna comprises a medium substrate, a grounding plate arranged at the lower layer of the medium substrate, and four same radiating areas arranged in four round angle positions of the upper layer of the medium substrate respectively and symmetrically. Each radiating area comprises a first ground support structure with a pendulum bob shape located at round angle of the medium substrate and the pendulum bob end coincides with the contour of the medium substrate, Each radiating area also comprises a first antenna unit and a second antenna unit which are distributed symmetrically along the center axis of the first ground support structure, the first antenna unit and the second antenna unit are in quadrature feed connection. A first L-shaped recessed groove is arranged at the line side, close to the first ground support structure, of the first antenna unit. One end of a first feed line is connected with the first antenna unit, and the other end of the first feed line is equipped with a first feed port. A second L-shaped recessed groove is arranged at the line side, close to the first ground support structure, of the second antenna unit. One end of a second feed line is connected with the first antenna unit, and the other end of the second feed line is equipped with a second feed port. The eight-element ultra wide band MIMO antenna has advantages of high isolation, low cross coupling, small size and low cost.

The invention provides a portable multifunctional offline programmer. The portable multifunctional offline programmer comprises: a master control MCU module; a Flash memory, wherein large-capacity readable and writeable operation is arranged in the Flash memory, and the Flash memory is used for storing a Firmware program and a source program of the offline programmer; a USB interface used for exchanging data with other external devices; an SWD interface used for debugging the programs, carrying out offline programming and updating the source program; an instruction reception and execution module used for the offline programmer to execute all functions; and a running state display module used for displaying all running states of the offline programmer. The portable multifunctional offline programmer can realize offline program programming and update the programs in the hardware chip Flash memory, and also can be used as a program debugger.

The invention relates to a continuous biochemical reaction and intermittent static precipitation integrated sewage treatment device. According to the invention, an entire sewage treatment process is centralized to a treatment tank which can be rectangular or circular. The device is divided into two types of functional zones, which are 1, biochemical reaction zones and 2, steady-flow precipitation zones. Newly entered sewage to be treated is mixed with precipitated and separated active sludge; the mixture continuously flows through the biochemical reaction zones in a reaction tank, such that biochemical reactions are completed. More than two relatively independent zones are arranged in the steady-flow precipitation zone, and the zones run alternately and intermittently, such that precipitation separation is performed under a relatively static condition, while the biochemical reaction zones work continuously. With the entire device and technical process, continuous treatment of newly entered sewage and static precipitation separation of the mixed liquid of sludge and sewage are realized. The device has the advantages of simple structure, low construction cost, low operation cost, and good effect. The device can be widely applied in industrial and domestic sewage treatments.

The invention provides a fabrication method of an ultra-thin silicon transfer plate without temporary bonding and un-bonding processes, and aims to solve the problems of high cost of equipment, largenumber of process steps and colloid residue pollution in the prior art. According to the fabrication method provided by the invention, the ultra-thin silicon transfer plate is formed in the silicon cavity of an ordinary silicon wafer, and holding and subsequent wiring layer processes and chip mounting can be operated like the ordinary silicon wafer, thus eliminating the expensive and complicated process steps of temporary bonding and un-bonding. The bottom plane of the silicon cavity fabricated by wet etching has a smooth surface, and does not need to carry out surface grinding and polishing process steps. In conjunction with glue spraying and laser direct writing lithography processes, the fabrication of a re-wiring layer can be completed, thus greatly lowering the process cost. A siliconthrough hole formed by laser processing has an inclined side wall, which is favorable for forming a high quality through hole barrier layer on the side wall of the silicon through hole and forming acomplete and continuous through hole side wall metal layer in the through hole.

The invention discloses an ultraviolet radiation enhancement based method for simultaneous desulfurization, denitrification and particulate removal of pypocholoride. The method comprises steps as follows: atomized aerosol formed by an aqueous pypocholoride solution is subjected to ultraviolet radiation, pypocholoride in the atomized aerosol has a photolysis reaction, ROS (reactive oxygen species) free radicals with a strong oxidizing property are generated, the atomized aerosol containing the ROS free radicals with the strong oxidizing property is sufficiently mixed with flue gas, the treated flue gas and the atomized aerosol after reaction are subjected to wet washing treatment, and the treated flue gas is discharged into atmosphere after water mists in the flue gas are removed by a demister. The invention further discloses an ultraviolet radiation enhancement based device for simultaneous desulfurization, denitrification and particulate removal of pypocholoride. According to the method and the device, desulfurization and denitrification effects of pypocholoride are remarkably enhanced with the ultraviolet radiation method, the atomized aerosol and harmful gas in the flue gas are mixed and react, so that the gas-liquid contact area is greatly increased, and gas-liquid mass transfer efficiency is improved; by means of an ultraviolet reactor, the systematic complexity and the mounting operation difficulty are reduced, and the initial investment cost of the system is reduced.

The invention discloses a regular polygonal cylinder anode and a method for preparing a large-area metal microstructure through electrodeposition. The regular polygonal cylinder anode is composed of acylinder anode body with cross section being a regular polygon and an electric insulation mask with a hollow pattern array. The method for preparing the large-area metal microstructure through electrodeposition of the regular polygonal cylinder anode in tank liquid includes: closely fitting the regular polygonal cylinder anode above a conductive substrate to enable liquid level of electrolyte toonly immerse the mask hollow pattern array downmost below the regular polygonal cylinder anode; connecting an electrodeposition power source positive electrode with the regular polygonal cylinder anode and a negative electrode with the conductive substrate, and electrodepositing out a microstructure array copied to the mask hollow pattern array on the conductive substrate under action of electrochemistry; acquiring multiple columns of microstructure arrays copied to different mask surfaces at different positions by clockwise or anticlockwise rotating the polygonal cylinder anode so as to realize modular forming of the large-area metal microstructure.

The invention discloses an air mixing and white smoke plume removing system capable of cooling slurry and used for flue gas and relates to a white smoke plume removing process system for flue gas desulfurized by a wet process. The system comprises a desulfurizing tower, slurry spraying pipelines, slurry coolers, an air pipeline and a chimney, wherein slurry heat exchangers arranged on the slurry spraying pipeline are used for cooling the slurry, the cooled slurry is subjected to a contact reaction with flue gas after being distributed by the spraying pipelines, the desulfurizing, cooling and dehumidifying processes are realized, desulfurized flue gas enters the chimney after being mixed with hot air, and is exhausted to the atmosphere via the chimney, and the flue gas contains no white smoke plume during exhausting. The process route is simple, equipment investment is low, modification is convenient and implementation is convenient.

The invention discloses a display system for reducing the area of a display screen through pixel space sampling. The display system comprises a driving module and a display module. The driving modulecomprises a signal conversion module, a storage control module, a register configuration module, a sampling control module and a pixel sampling module, the sampling mode and the extracted image data serve as control signals to be sent to the display module, and the display module selects a corresponding display array to display images according to the control signals. According to the invention, different modes of sampling can be carried out on adjacent pixels or pixels between different frames; therefore, the total number of pixels for display is reduced, so that the intra-frame and differentframes are adjusted together under the condition of ensuring a good display effect, the number of pixels of the display screen is successfully reduced, the size area of the display screen is reduced,and the driving complexity is greatly simplified.

The invention relates to a combustion, heat exchange and dust removal integrated small biomass normal pressure hot water boiler and belongs to the technical field of combustion equipment. A boiler body heating surface is arranged on the upper portion of a grate; the heating surfaces on the front side and the left and right sides of a hearth are of box plate water sleeve structures; a first-stage thread smoke pipe heating surface is arranged in an upper box body, and a second-stage thread smoke pipe heating surface is arranged in a rear box body; a semi-ellipsoid-shaped boiler arch is arranged above the front half part of the grate in the hearth; fuel is combusted on the flat-pushing reciprocating grate, and after the fuel is fully combusted under the effect of the semi-ellipsoid-shaped boiler arch and exchanges heat with a perimeter radiation heating surface, high temperature fume enters the first-stage thread smoke pipe heating surface along the upper surface of the semi-ellipsoid-shaped boiler arch, makes a turn by 90 degrees to enter the second-stage thread smoke pipe heating surface after heat exchange and directly enters a dust removal device after heat exchange. The combustion, heat exchange and dust removal integrated small biomass normal pressure hot water boiler has the advantages that the automation degree is high, combustion operation is stable, heat efficiency is high, the emission load of pollutants is little, fuel applicability is good, the structure is compact, and biomass fuel combustion systematic application can be achieved.

The invention discloses a non-contact rocker sensor, a control device and a processing system and method, and relates to the technical field of novel sensors. The non-contact rocker sensor comprises a rocker assembly and a magnetic induction IC assembly. The rocker assembly is used for generating swing in a first direction and a second direction which are perpendicular to each other, swing of a first magnetic field generated by a first magnet swinging in the first direction and swing of a second magnetic field generated by a second magnet swinging in the second direction. The magnetic induction IC assembly is used for generating and outputting a first electric signal corresponding to the change of the distance between the first magnet and the first magnetic induction element caused by the swing of the first magnet and a second electric signal corresponding to the change of the distance between the second magnet and the second magnetic induction element caused by the swing of the second magnet. The non-contact rocker sensor has the advantages of long service life, high control precision and small size.

The invention discloses a data driver comprising two data processing circuits and a multiplexer circuit. The two data processing circuits respectively provide a positive pixel voltage and a negative pixel voltage according to first pixel data and second pixel data. The multiplexer circuit comprises a plurality of multiplexer units, a first input end and a second input end thereof receive the positive pixel voltage and the negative pixel voltage, respectively, and the output end is coupled to a data wire. The first and second switches of a first switcher are connected in series between the first input end and the second input end, a node between the two switches is selectively grounded via a third switch. The fourth and fifth switches of a second switcher are connected in series between the second input end and the output end, a node between the two switches is selectively grounded via a sixth switch. When the first and the second switches are turned on, the sixth switch is turned on. When the fourth and fifth switches are turned on, the third switch is turned on.

The invention relates to a centrifugal mill (1) for grinding loose material, comprising a frame (2) for supporting a grinding chamber (3) provided with a longitudinal axis (A) and with at least one opening (4, 5) for introducing and / or discharging respectively the material to be ground and the ground material, first means (6) for the articulation of the grinding chamber to the frame, which are formed proximate to one of the two opposite ends of the longitudinal axis (A) and are adapted to allow the grinding chamber (3) to perform a motion in which the longitudinal axis (A) rotates about a fixed axis (B) with which it shares a point of incidence (P), the angle of incidence between the axes (A, B) remaining substantially constant during the motion, means (8) for actuating the grinding chamber in the motion, which are provided proximate to the other end of the longitudinal axis, second means (7) for the articulation of the grinding chamber to the actuation means, and a solid body (9) that is formed inside the grinding chamber (3), a compartment delimited by internal walls (3a) of the grinding chamber (3) and by an external surface (9a) of the solid body (9) defining a portion of the chamber that is active for the milling.

The invention discloses a silicon-based micro-ring-light router based on black phosphorus. The router comprises a bus optical waveguide I and a bus optical waveguide II which are parallel to each other; a micro ring is installed between the bus optical waveguide I and the bus optical waveguide II; the micro ring is connected with an electrode; the whole or partial region of the micro ring are provided with a black phosphorus layer; the micro ring provided with the black phosphorus layer comprises a micro ring silicon layer, a first isolation dielectric layer, a black phosphorus layer, a second isolation dielectric layer, a micro ring silicon layer and a cladding; one side of the black phosphorus layer extends under the electrode. The silicon-based micro-ring-light router is capable of selecting and separating optical signals having a specific wavelength value flexibly and in real time; The device has advantages of flexible design, fast reaction speed, low energy consumption, convenient use, and satisfies different wavelength division multiplexing requirements; by applying different bias voltages to different electrodes, it is possible to realize the selection of optical signals of different wavelengths to realize the optical routing function.

The invention relates to a resin catcher used in an industrial water processing system comprising a cylinder body (1), filter cores (2), a filter core tube plate (3), a filter core tube plate installation ring (4), and a base plate (5). The cylinder body (1), the base plate (5), and the filter core tube plate installation ring (4) are composed into an integral whole through welding. The filter cores (2) and the filter core tube plate (3) are connected, and the connections are watertight. The filter core tube plate (3) and the filter core tube plate installation ring (4) are connected, and the connection is watertight. The number N of the filter cores arranged on the tube plate is no less then 2. The catcher provided by the invention is adopted in industrial water processing systems with high water processing capacities. With the catcher, equipment dimension and land occupation can be greatly reduced, equipment weight can be effectively reduced, and equipment manufacturing cost can be saved. A multi-core small-diameter filter core arrangement is adopted, such that the water processing filtering capacity of the equipment can be improved. With the small-diameter filter cores, reduced strength caused by increased diameter can be avoided.

The invention relates to a control cabinet and a GIS device using the control cabinet. The GIS device comprises a GIS shell and an arc extinguishing chamber arranged in the GIS shell, wherein a movable contact and a static contact are arranged in the arc extinguishing chamber, and a control cabinet is arranged outside the GIS shell. The control cabinet comprises a cabinet body, a magnetic operating mechanism integrated in the cabinet body, an energy storage unit supplying power for the magnetic operating mechanism and a control unit for controlling the power supply amount of the energy storageunit, wherein the magnetic operating mechanism is provided with a power output rod which can be guided and moved out of the cabinet body and is connected with the movable contact through a transmission mechanism, the magnetic operating mechanism comprises an electromagnetic coil which is connected with the power output rod and drives the power output rod to directly move after being electrified.The magnetic operating mechanism, the energy storage unit and the control unit are integrated in a cabinet body, and the transverse size and the occupied area of the GIS device are reduced, so that the GIS device is more integrated and compact.

The invention discloses a manufacturing method of a low-cost island structure LTCC substrate, and belongs to the field of advanced manufacturing. The method mainly comprises the steps of typesetting designing, punching, printing, primary overlying, island cutting, secondary overlying, sintering and the like. According to the invention, the split type layout design is firstly adopted, and then the splicing of the island and the base is carried out through the stainless steel limiting plate so that the processing and manufacturing of the low-cost island structure LTCC substrate are realized. According to the method, the processing precision and the production efficiency of the LTCC substrate with the island structure can be improved, the utilization efficiency of the LTCC green tape is improved, the cost is reduced, and the method has a better application prospect especially for batch production tasks.

The invention provides an expandable modular multi-channel off-line programmer. The expandable modular multi-channel off-line programmer comprises an off-line programmer main board and N off-line programmer daughter boards, wherein N is an integer larger than 1.The off-line programmer daughter boards are fixed to the off-line programmer main board in a pluggable mode. The N off-line programmer daughter boards are identical independent modules, are each provided with an independent first USB interface and an independent first SWD interface and can independently complete off-line programming of Flash3 memories of target chips and updating of source programs. The off-line programmer main board comprises a second USB interface and N second SWD interfaces, the second USB interface is connected with the first USB interfaces of the off-line programmer daughter boards, the second SWD interfaces are connected with the second SWD interfaces of the off-line programmer daughter boards, and through the off-line programmer main board, the multi-channel off-line programmer can complete transmitting and updating of source programs and off-line programming of target chips. The expandable modular multi-channel off-line programmer can break through the limitation of the number of off-line programming channels, and thus the requirement for volume production can be met in the large-scale chip programming process; due to the fact that all channels are relatively independent, module maintenance and replacement can be conveniently carried out if one channel fails.

The invention provides an electrically erasable programmable read only memory (EEPROM) storage chip especial for an intelligent ammeter. The EEPROM storage chip comprises a storage array which is composed of nanocrystalline storage units, wherein each of the nanocrystalline storage units comprises a semiconductor substrate material, a source conduction region, a leak conduction region, a tunneling dielectric layer, a nanocrystalline storage layer, an isolation dielectric layer and a transistor control grid, the source conduction region and the leak conduction region are formed by heavy doping in a substrate region of the semiconductor substrate material, the tunneling dielectric layer is covered on the surface of a channel between the source conduction region and the leak conduction region, the nanocrystalline storage layer is covered on the tunneling dielectric layer, the tunneling dielectric layer encircles or covers the nanocrystalline storage layer, the transistor control grid is covered on the isolation dielectric layer, and the storage array utilizes a framework which is capable of performing random addressing, programming and erasing to each storage unit in the array. Nanocrystalline floating gate storage structures are used as the storage units, so that manufacturing processes can be simplified, device sizes and chip areas are lessened, the number of masks to be manufactured is reduced, and manufacturing costs of the storage chip are reduced.

The invention relates to a pulsed concentrated air inflow closing device. An end plate is provided with at least two independent valve ports, at least two valve plate shafts hinged to the end plate are connected to corresponding valve plates through respective cover arms, and the valve plates correspond to the respective valve ports; the end plate is provided with lower locking parts at the far ends of the valve plate shafts, and upper locking parts are buckled with the lower locking parts in the closing process; a connecting rod of a connecting rod mechanism of a driving mechanism is hinged to at least two crank arms, the crank arms are connected to the corresponding valve plate shafts, and a piston shaft of a driving cylinder is connected to the connecting rod; and a piston shaft of a locking cylinder of an opening and locking mechanism is connected to the rear part of a pawl, the middle of the pawl is hinged to a support, a ratchet wheel with a clamping groove is installed on one valve plate shaft, and a spring is installed on the support and the pawl. The pulsed concentrated air inflow closing device has the advantages that the structure is compact, the manufacturing cost is low, sealing is reliable and the impact vibration resistance is good. Through the matching structures of the multiple valve plates and the valve ports, the large-size valve plates in ventilation openings can be fast opened or closed without adding driving moment.

A lift cylinder for a mast assembly of a vehicle and a vehicle implementing the same. The lift cylinder includes a cylinder housing with a piston received therein. The piston is movable along an axis of extension between an extended position and a retracted position. The piston is formed of a composite material having a reinforcement phase oriented along the axis of extension of the piston, thereby increasing the buckling resistance of the piston. This improved buckling resistance potential allows for increased lift cylinder extension and / or more compact lift cylinder design.

The present invention relates to a vertical resonant cavity surface emitting laser diode (VCSEL) with multiple current confinement layers, that is, a VCSEL with multiple current confinement layers. Generally, a tunnel junction layer needs to be arranged between the two active layers to allow the current from One active layer flows into the other active layer, but the tunneling junction layer will cause the current to diverge seriously in one active layer, making it difficult for the current in the other active layer to be confined to the desired area. A current confinement layer with carrier and light confinement functions is provided between, so that the carrier or light confinement effect of the active layer above and / or below the current confinement layer can be improved, which is helpful to improve the optoelectronic properties of the VCSEL Compared with the existing VCSEL, the VCSEL with multiple current confinement layers can significantly improve the optical power, slope efficiency and power conversion efficiency of the VCSEL.

The invention discloses a routing common method for different impedance signal lines and a PCB board. The method comprises the steps that signal lines of different impedance values on the PCB board are connected with Cap capacitors; a PCB Trace channel is shared by all cap capacitors; and the Cap capacitors are used as Bom selector switches for Bom switching, so that the routing of all signal lines on the PCB board are integrated. Compared with the prior art, the routing common method for different impedance signal lines and the PCB board have the advantages that the scheme that the transmission channel on the PCB board is shared by buses of different impedance values is used to reduce the number of high speed routing on the board; the function of each bus of a product is realized, and the size, the area and the number of layers of the board are reduced; the development cost of the board is reduced; the market competitiveness of the product is enhanced; and the practicability is high.