30results about How to "Good off" patented technology

The embodiment of the invention provides a flash memory unit for a shared source line and a forming method thereof. The provided flash memory unit for the shared source line comprises a semiconductor substrate, a source line, a floating gate dielectric layer, a floating gate, a control gate dielectric layer, a control gate, side wall dielectric layers, side walls, a tunneling oxide layer, a word line, a drain electrode and a source electrode, wherein the source line is positioned on the surface of the semiconductor substrate; the floating gate dielectric layer, the floating gate, the control gate dielectric layer and the control gate are sequentially positioned on the surface of the semiconductor substrate on two sides of the source line; the side wall dielectric layers are positioned between the source line and the floating gate as well we between the source line and the control gate; the side walls are positioned on the floating gate and the control gate, which are far from the source line; the tunneling oxide layer is adjacent to the side wall and is positioned on the surface of the semiconductor substrate; the word line is positioned on the surface of the tunneling oxide layer; the drain electrode is positioned in the semiconductor substrate at one side of the word line, which is far from the source line; the source electrode is positioned in the semiconductor substrate which is right opposite to the source line; and the floating gate is provided with a p-type doping end which is close to the source line, wherein the doping type of the floating gate is in a p type and the doping type of other parts is respectively in an n type.

The invention discloses a shift register, a gate drive circuit, a display panel and a display device. The shift register comprises a second output module and a coupling module, and the two ends of thecoupling module are electrically connected with a third node and a second signal output end respectively. At the second stage, the potential of a fourth node is an enable potential, and the second output module transmits a high-potential signal of the first power supply signal input end to the second output end; at the third stage, the potential of the third node is an enable potential, and the second output module transmits a low-potential signal of the second power supply signal input end to the second output end, i.e., the signal of the second output end jumps from high to low, and at themoment, the low-potential signal of the second output end is coupled to the third node through the coupling effect of the coupling module, so that the potential of the third node is lower than that ofthe second stage, the low-potential signal of the second power supply signal input end has no transmission loss, the transistor controlled by the second signal output end can be completely turned off, and the leakage current loss is avoided.

The invention relates to a non-woven composite economical masterbatch and its production method and equipment. The masterbatch formula is: 12-18 parts of polypropylene resin with a melting index of 60-90, and polypropylene with a melting index of 3-30 Resin 6-10, nano-scale activated calcium carbonate 55-65, polyethylene wax 8-10, composite antioxidant 0.5-0.7, zinc stearate 1.5-2.5, titanate 1.5-2.5, white oil 1.5-2, Rutile titanium dioxide 1.5-2; the masterbatch production method is as follows: the raw materials are fully mixed and sent to the twin-screw extruder, and then sent to the single-screw extruder, and the finished non-woven fabric is obtained through melt extrusion, pelletizing and screening; The production equipment used is a stepped screw extruder, including a first-stage twin-screw extruder and a second-stage single-screw extruder, and the two extruders are arranged in a "T" shape. The present invention uses nano-scale active calcium carbonate to partially replace the PP material for non-woven fabrics, and adds the present invention to the raw material PP used for non-woven fabrics, which can greatly reduce the cost of materials under the premise of ensuring continuous fibers by melt-blowing and calendering, and Can save a lot of energy.

This invention relates to a distribution method for cathode figures in an integrated threshold converting thyristor, in which, the cathode comb strips are arranged in a subarea complex mode and arranged in rectangle distribution in the subarea and peripheral distribution among the subareas in different modes and positions and sizes of the comb-strips are allowed to be modified. The complex method includes: the subarea formed by diving a fan area and a loop is an isosceles ladder zone and a basic distribution unit of the comb strips , the fan section is one dividing the round surface into m same areas, when m is rather low, the section is close to a rectangular distribution, when m is high, it approaches to a peripheral distribution, and the loop refers to dividing the round surface into n coaxial loop regions in different areas in terms of positive polygons, the value of which is related to the diameter of the chip and length of the comb strip, the larger the n, the more of the sum of the comb strips, which is good for current.

The invention relates to a production equipment of a non-woven fabric compound economic master batch. The formulation of the master batch comprises: 12-18 parts of polypropylene resin with melt index being 60-90, 6-10 parts of polypropylene resin with melt index being 3-30, 55-65 parts of nanometer active calcium carbonate, 8-10 parts of polyethylene wax, 0.5-0.7 part of compound antioxidant, 1.5-2.5 parts of zinc stearate, 1.5-2.5 parts of titanic acid ester, 1.5-2 parts of white oil and 1.5-2 parts of rutile titanium dioxide. The production method of the master batch comprises the steps of: feeding the materials after intensive mixing into a double-screw extruder and later into a single-screw extruder, conducting melt extrusion, grain cutting and screening to produce non-woven fabric finished product. The production equipment adopts a stair-type screw extruder comprising the first-stair double-screw extruder and the second-stair single screw extruder which are arranged in a 'T'-type. The invention adopts the nanometer active calcium carbonate which can partially substitute PP materials used for non-woven fabric. After being added to the PP materials used for the non-woven fabric, the invention can greatly reduce the cost of the materials and save large amount of energy under the premise that melt blowing and calendaring guarantee the no-breaking of fibers.

The invention provides a brake system valve integrated device which comprises a brake assisting air cylinder, a valve part and a brake air circuit plate. The brake assisting air cylinder and the valvepart are both mounted on the brake air circuit plate; an air outlet of the brake assisting air cylinder is connected with an air inlet of the brake air circuit plate, a valve part air channel is formed in the brake air circuit plate which is provided with a valve part mounting hole communicating with the valve part air channel, the valve part is mounted in the valve part mounting hole, and an airoutlet of the brake air circuit plate is connected with an air inlet of a brake cylinder of a brake system. Through the integrated arrangement via the brake air circuit plate, wiring of air circulating pipelines is greatly optimized, and thus the pipeline layout of the brake system is more concise and attractive.

The invention provides a multichannel isolation type power device switch drive module of a power conversion controller. The signal input end of the low frequency full bridge rectification filter circuit is connected with an alternating current power supply of a grid connected power generating network. The signal output end is connected with the signal input end of a high voltage and high frequency pulse power signal generating circuit. The signal output end of the high voltage and high frequency pulse power signal generating circuit is connected with the signal input end of an isolation type direct current level power supply circuit. The signal output end of the isolation type direct current level power supply circuit is connected with the signal input end of a pulse level shifting circuit. Signal pulse emitted by a power conversion controller is connected with the signal input end of a pulse level shifting circuit. According to the invention, the module has the advantages of simple structure and stable and reliable performance, can well drive the power conversion controller, and is suitable for various composite applications in half bridge, full bridge, three-phase bridge and multilevel topology circuits and a power management circuit in frequency conversion and speed regulation.

Methods for increasing the patency of biodegradable, synthetic vascular grafts are provided. The methods include administering one or more cytokines and / or chemokines that promote outward tissue remodeling of the vascular grafts and vascular neotissue formation. The disclosed methods do not require cell seeding of the vascular grafts, thus avoiding many problems associated with cell seeding. Biodegradable, polymeric vascular grafts which provide controlled release of cytokines and / or chemokines at the site of vascular graft implantation are also provided.

The invention provides a junction-free field effect transistor and a formation method thereof. The formation method comprises the steps of providing a substrate with a first region and a second region; forming a first doped region and a second doped region; removing part of the substrate so as to form a first opening and a second opening; and filling with openings with a metal containing material layer so as to form a source region and a drain region in the first opening and the second opening respectively. The invention further provides a junction-free field effect transistor, which comprises a substrate, a first doped region, a second doped region, a first gate structure, a second gate structure, a first opening and a second opening, and is characterized in that the first opening and the second opening are internally provided with metal containing material layers which act as a source region and a drain region respectively. The beneficial effects of the invention lie in that contact resistance between the source / drain region and a conductive plug is small, turn-on current is increased, and the performance of the junction-free field effect transistor is improved; and the difficulty of a doping process is simplified, and the degree of an interface scattering problem possibly occurred in the doped regions is reduced to a certain extent.

The invention relates to a super-distortion control-based DC-DC converter chaotic control method and system, and medium. The method comprises steps of performing mathematical modeling on a DC-DC converter, so as to obtain a chaotic model of a state variable of the DC-DC converter; acquiring a chaotic energy storage value in a chaotic state in the chaotic model, acquiring an energy storage constantvalue in a stable state in the chaotic model according to the chaotic energy storage value, and determining an error variable according to the chaotic energy storage value and the energy storage constant value; based on a super-distortion control method, acquiring an estimated error amount according to the error variable, designing an equivalent sliding mode controller according to the error variable and the estimated error amount, so as to obtain a control signal of the equivalent sliding mode controller; and controlling the DC-DC converter according to the control signal. The method can effectively control the DC-DC converter in the chaotic state to run in a 1- periodic state orbit, so that chaotic phenomenon is eliminated effectively, the DC-DC converter responds dynamically faster, has stronger robustness, and has lower voltage ripples.

The invention relates to a composite granulation screw extruder. The composite granulation screw extruder is composed of a first-stage double screw extruder and a second-stage double screw extruder, the first-stage double screw extruder and the second-stage double screw extruder are arranged in a vertical manner, and the discharge port of the first-stage double screw extruder is connected with the feeding port of the second-stage double screw extruder. A material from the discharge end of the first-stage double screw extruder enters the second-stage double screw extruder from the feeding end of the second-stage double screw extruder, and is basically in plasticizing state, so decomposition caused by the long retention time of an accumulated material can be avoided. The above staged double screw extruder has good devolatilizing, mixing and conveying effects and can be adapted to present blend production high-density filling and coloring systems.

The invention provides a scintillator afterglow accurate measurement device and method, and solves the problem of low afterglow time measurement accuracy of an existing afterglow test device. The device comprises an X-ray shielding shell, an X-ray generating mechanism, a test shielding shell, a detector and a time processing unit, the X-ray generating mechanism comprises a light source, a vacuum shell, an input window, a photoelectric cathode, a focusing electrode, an anode target and a light source control circuit. The light source control circuit controls on-off of the light source and sendsan initial signal to the time processing unit. An isolation sealing sleeve is arranged outside the light source; an X-ray output window is arranged between the side wall of the vacuum shell and the X-ray shielding shell; a cavity formed by the X-ray shielding shell, the isolation sealing sleeve, the vacuum shell and the X-ray output window is filled with an insulation heat dissipation medium; thedetector is arranged in the test shielding shell and used for sending a termination signal to the time processing unit and obtaining intensity information of afterglow of the scintillator to be tested, and the time processing unit is used for obtaining afterglow time information of the scintillator to be tested.

The invention discloses a bidirectional switch floating drive circuit and a multi-way switch drive circuit thereof. The bidirectional switch floating drive circuit comprises a primary side drive generation circuit, a primary side drive amplification circuit, an isolation drive transformer T1, a secondary side half-wave rectification circuit and a floating drive circuit. The primary side drive generation circuit comprises an AND gate and two paths of input signals, wherein one path is a PWM wave, and the other path is an I / O signal; the isolation drive transformer T1 comprises a primary windingN1 and a secondary winding N2; the secondary side half-wave rectification circuit comprises a rectifier diode D1 and a secondary side filter capacitor C2; and the floating drive circuit comprises a bidirectional switch tube G, wherein the bidirectional switch tube G comprises two N-type MOS transistors, grid electrodes and source electrodes of the two MOS transistors are respectively connected together. According to the invention, long-time conduction or closing of the bidirectional switching tube can be conveniently realized only by controlling the level state of the I / O signal.

The invention belongs to the field of a logic device and circuit in the field of a super-large-scale integrated circuit, specifically a tunnel field effect transistor with an increased on state current. According to the tunnel field effect transistor, a low K dielectric area is arranged between a source area and a drain area, thereby isolating the source area and the drain area; an intrinsic area is arranged on the source area; a layer of conductive channel is arranged between the intrinsic area and the drain area; and the conductive channel is located on the low K dielectric area. According to the structure of the tunnel field effect transistor, the bipolar effect of a traditional transverse TFET is weakened. Through utilization of a low K dielectric, the contact between the drain area and the intrinsic area is reduced and the bipolar effect is weakened, thereby facilitating thorough switch-off of a device. An electric field of a tunnel junction area is increased by employing the low K dielectric and a high K side wall. The on state current of the TFET is increased through adoption of the side wall (a passivation layer) made of a high dielectric material. According to the tunnel field effect transistor, the bipolar effect is weakened, the on state current is increased, the tunnel field effect transistor is compatible with a CMOS technology and the cost is low.

The invention relates to an intelligent mobile merchandise concrete stirring station, and elates to the technical field of merchandise concrete stirring stations. The intelligent mobile comprises a control unit configured to output a control signal according to a set program and / or temporarily input instruction data; a material storage unit including a plurality of material storage tanks which arerespectively used for storing various production raw materials; a mixing unit including a stirring device in control connection with the control unit; a first discharging unit arranged between the material storage unit and the mixing unit in a communicating mode and in control connection with the control unit; a storage unit including a plurality of transportation tanks which are respectively used for storing different types of mixtures mixed and output by the mixing unit; a second discharging unit arranged between the mixing unit and the storage unit in a communicating manner and in controlconnection with the control unit; and a discharging unit in control connection with the control unit and controlled by the control signal of the control unit to transfer the transportation tanks filled with the set type of mixtures to a loading tool. The intelligent mobile merchandise concrete stirring station provided by the invention has the effect that a mixing plant can conveniently select a more suitable site for operation.

The invention relates to an extending-and-contracting type valve for a large-diameter pipe and belongs to the technical field of valves. The extending-and-contracting type valve comprises a valve body. The upper surface and the lower surface of the valve body are provided with an upper end cover and a lower end cover correspondingly. First gaskets are arranged between the upper end cover and the valve body as well as between the lower end cover and the valve body correspondingly. The upper end cover, the corresponding first gasket and the valve body are fixedly connected through first screws.The lower end cover, the corresponding first gasket and the valve body are also fixedly connected through first screws. A threaded rod and two guiding rods are arranged between the upper end cover andthe lower end cover. The threaded rod is provided with a valve handle and two nuts. Transmission arms are arranged at the two sides of each nut. A piston is arranged between the corresponding two transmission arms of each side of a threaded rod central shaft in a shared manner. A guide pillar is arranged between each piston and the corresponding adjacent guiding rod in a shared manner. Accordingto the extending-and-contracting type valve, by means of the effect of the threaded rod, the large axial thrust can be generated through the small torque, and thus the extending-and-contracting type valve can achieve the labor-saving effect; and the problem that in the prior art, when a valve is damaged and cannot be repaired, the valve is replaced with a new valve is solved, and thus the living cost is saved.

The invention discloses a physical examination device with voice broadcast. The physical examination device comprises a microprocessor, wherein the output end of the microprocessor is electrically connected with a feedback module, the input end of the microprocessor is electrically connected with a temperature comparing module, an information collecting unit, a power module and a control module, and the output end of the microprocessor is in two-way electric connection with a data storage module. For the physical examination device with voice broadcast, through the matched use of the microprocessor, the data storage module, the temperature comparing module, the power module, the control module, the information collecting unit, the feedback module, a body temperature collecting module, a display module and a loudspeaker, the problem that the existing body temperature measuring mode is inconvenient for use of a user is solved. The physical examination device with voice broadcast has theadvantage that the use of the user is facilitated, meanwhile, the workload of the user is reduced, the work efficiency of the user is improved, great convenience is brought to use of the user, and thus the physical examination device is worthy of popularization.

The invention provides an LED lamp power supply capable of reducing power at a regular time. The LED lamp power supply comprises a fuse F1, a rectifier transformer L1, a capacitor CX1, a filter U, a rectifier transformer L3, a sliding resistor VR2, a diode D, a resistor R4, a filter capacitor C3, a triode DW, a PWM regulator U1M and a resistor R6, wherein the right end of the fuse F1 is connected with the rectifier transformer L1; the right end of the rectifier transformer L1 is connected with the capacitor CX1; the filter U is mounted at the right end of the capacitor CX1; the right end of the filter U is connected with the rectifier transformer L3; the right end of the rectifier transformer L3 is connected with the sliding resistor VR2; through such a design, protection for the main body of a circuit is achieved; the right end of the diode D is connected with the resistor R4 and the filter capacitor C3 respectively; the right end of the resistor R4 is connected with the triode DW and the PWM regulator U1M respectively; the right end of the PWM regulator U1M is connected with the resistor R6; through such a design, regulation of the output power of a LED lamp L5 is achieved. The LED lamp power supply is convenient to operate, can protect the circuit, can carry out intelligent control, and is convenient to detach, good in stability and high in reliability.

The invention belongs to the field of logic devices and circuits in the field of ultra-large-scale integrated circuits, and specifically relates to a tunneling field-effect transistor with an increased current switching ratio. In the present invention, the electric field between the source region and the intrinsic region is increased by setting a low-K dielectric region between the source region and the drain region, thereby increasing the on-state current and suppressing the off-state current. The doped layer and the substrate are set to form a reverse-biased PN junction, and the contact between the source region-low-K dielectric region-drain region and the substrate is isolated, and the off-state current of the TFET is reduced. The above methods of increasing the on-state current and suppressing the off-state can be combined and superimposed on each other. Furthermore, the invention improves the on-state current, is compatible with the traditional CMOS technology, has low cost, and realizes a high current switching ratio.

Embodiments of the present invention provide a flash memory unit that shares a source line and a forming method thereof. The provided flash memory unit that shares a source line includes: a semiconductor substrate; a source line located on the surface of the semiconductor substrate; and located on both sides of the source line in sequence. The floating gate dielectric layer, floating gate, control gate dielectric layer and control gate on the surface of the side semiconductor substrate; the side wall dielectric layer located between the source line and the floating gate and control gate; the floating gate and control gate located away from the source line The sidewalls, and the tunnel oxide layer on the surface of the semiconductor substrate adjacent to the sidewalls; the word line located on the surface of the tunnel oxide layer; the word line located in the semiconductor substrate on the side of the word line away from the source line Drain; a source located in the semiconductor substrate facing the source line; wherein, the floating gate has a p-type doping end close to the source line with a p-type doping type, and the remaining portion has an n-type doping type. type.

The invention discloses a parallel port monitoring device and a printing system. The parallel port monitoring device comprises a parallel port data receiving and transmitting module for receiving parallel port data and outputting parallel data corresponding to the parallel port data, a data conversion module connected with the output end of the parallel port data receiving and transmitting module for receiving the parallel data output by the parallel port data receiving and transmitting module and converting the parallel data into serial data to be output through a serial interface, and a switching module, wherein one input end of the switching module is used for obtaining gating signals, and the other input end of the switching module is used for receiving switching signals, when closing signals are received, the switching module is used for stopping transmission of the gating signals, and when opening signals are received, the switching module is used for converting the gating signals into enable signals to be output. The parallel port monitoring device can monitor parallel port data sent by the printing system to a printer and performs on-off control.

The present invention relates to a DC-DC converter chaos control method, system and medium based on super-twisting control. The method includes mathematical modeling of the DC-DC converter to obtain the chaos model of the state variable of the DC-DC converter Obtain the chaotic energy storage value in the chaotic state in the chaotic model, obtain the energy storage constant value in the steady state in the chaotic model according to the chaotic energy storage value, and according to the chaotic energy storage value and the storage The error variable can be determined by a constant value; based on the super twist control method, an estimated error amount is obtained according to the error variable, and an equivalent sliding mode controller is designed according to the error variable and the estimated error amount to obtain the equivalent A control signal of a sliding mode controller; the DC-DC converter is controlled according to the control signal. The present invention can effectively control the DC-DC converter in the chaotic state to orbit in the 1-period state, effectively eliminate the chaotic phenomenon, have faster dynamic response, stronger robustness, and lower voltage ripple.

Power over Ethernet (PoE) communication systems, control circuits and methods are presented for controlling power delivered to a powered device through a communication cable, in which a power sourcing equipment measures a supply voltage and selectively discontinues provision of power from a power source in response to a measured supply current exceeding an adaptive limit signal representing a supply current level corresponding to a predetermined safe operating power level at the measured supply voltage.

The invention provides a multi-channel isolated power device switch drive module of a power conversion controller, the signal input end of the low-frequency full-bridge rectification filter circuit is connected to the AC power supply of the grid-connected power generation network, and the signal output end is connected to the high-voltage high-frequency pulse power The signal input terminal of the signal generating circuit, the signal output terminal of the high-voltage high-frequency pulse power signal generating circuit is connected to the signal input terminal of the isolated DC level power supply circuit, and the signal output terminal of the isolated DC level power supply circuit is connected to the signal of the pulse level shifting circuit The input terminal and the signal pulse sent by the power conversion controller are also connected to the signal input terminal of the pulse level shifting circuit. The invention has simple structure, stable and reliable performance, and can provide good drive for the power conversion controller. The invention is suitable for various composite applications in half-bridge, full-bridge, three-phase bridge, multi-level topological circuit and power management circuit in frequency conversion speed regulation.

The present invention provides a power supply for LED lights with timing power reduction, which includes fuse F1, rectifier transformer L1, capacitor CX1, filter U, rectifier transformer L3, sliding resistor VR2, diode D, resistor R4, filter capacitor C3, and voltage regulator diode WZ , PWM regulator U1M and resistor R6, the right end of fuse F1 is connected to rectifier transformer L1, the right end of rectifier transformer L1 is connected to capacitor CX1, the right end of capacitor CX1 is installed with filter U, the right end of filter U is connected to rectifier transformer L3, and the right end of rectifier transformer L3 is connected to sliding resistor VR2, this design realizes the protection of the main body of the power supply, the right end of the diode D is respectively connected to the resistor R4 and the filter capacitor C3, the right end of the resistor R4 is respectively connected to the Zener diode WZ and the PWM regulator U1M, and the right end of the PWM regulator U1M is connected to the resistor R6. The output power of the LED lamp L5 can be adjusted, it is easy to operate, it can protect the circuit, it can be intelligently adjusted, it is easy to disassemble, it has good stability and high reliability.