103results about How to "Good thickness consistency" patented technology

The invention discloses a shield gate trench MOSFET. A bottom oxide layer is formed on the side surface and the bottom surface of the trench of a gate structure, and shield polysilicon totally fills the trench; under self-alignment definition of the bottom oxide layer, the shield polysilicon is etched back to the bottom part of the trench in a self-alignment mode; the surface of the shield polysilicon after self-alignment etching back is oxidized to form an inter-polysilicon isolated oxide layer; after the inter-polysilicon isolated oxide layer is formed, the bottom oxide layer is etched backto the bottom part of the trench, the bottom oxide layer after etching back and the inter-polysilicon isolated oxide layer surround the shield polysilicon, and a top trench is formed at the top part of the trench; and the side surface of the top trench is provided with a gate oxide layer and is filled with polysilicon gate. The invention also discloses a manufacturing method for the shield gate trench MOSFET. Gate source electric leakage of the device can be reduced while the threshold voltage of the device is reduced, the thickness consistency of the inter-polysilicon isolated oxide layer canbe improved, and the capacitor corresponding to the inter-polysilicon isolated oxide layer is stable and controllable.

The utility model discloses a flexible thin film lithium ion battery and a manufacturing method thereof. The flexible thin film lithium ion battery is composed of a positive layer, a diaphragm, a negative layer and an external packing layer; the positive layer is composed of aluminum foil with a thickness of 16-30 microns and a positive material printed on one surface of the aluminum foil by adopting intaglio printing technology; the negative layer is composed of copper foil with a thickness of 10-30 microns and a negative material printed on one surface of the copper foil by adopting the intaglio printing technology; the external packing layer is an aluminum plastic composite film; the positive material of the battery comprises dispersant Hypermer KD-1; and the negative material of the battery comprises conductive agent vapor-grown carbon fiber. The flexible thin film lithium ion battery provided by the invention has the benefits that the safety is high, the thickness consistency is good, and the thickness of the battery can be controlled and lowered to 0.25MM, besides, the flexibility is good, the performance and the shape of the battery can not be affected even though the flexible thin film lithium ion battery is bent for several times.

The invention discloses a lithium iron phosphate precursor and a method for preparing a rechargeable battery electrode thereof. The method comprises the following steps: using a prepared active substance LiFePO4 precursor as a basic raw material, attaching the active substance to a conductive skeleton firmly by using intermolecular forces of the active substance precursor, and then pressing and sintering the active substance precursor to obtain the electrode. The method does not need adhesive to attach the active substance to the skeleton so as to simplify production technology; the electrode prepared by the method has the advantages of little internal resistance, high reaction speed and quick electrolyte absorption; and the method has the advantages of simple process, low energy consumption, low cost and better electric conductivity of the electrode. After the electrode prepared by the method is assembled into an actual battery with a cathode which is prepared by graphite, the internal resistance of the battery is less than or equal to 20 milliohms, the primary discharge capacity can reach 582 milliamperes, and the specific capacity can reach 102.1 milliamperes; and the discharge capacity still can reach 560 milliamperes after 50 times of cycle.

A method for manufacturing a self-aligned metal silicide comprises the steps that: a semiconductor substrate is provided and at least a silicon area is arranged on the surface of the semiconductor substrate; a metal layer is formed on the semiconductor substrate and the first step of annealing process is applied to the semiconductor substrate and the second step of annealing process is applied to the semiconductor substrate; the metal layer is removed by etching. The thickness and resistivity of the metal silicide formed through the method of the invention have better consistence.

The invention discloses a full-section multi-functional channel concrete lining machine used in the construction of a channel, which comprises a main frame (9), a walking system, an operation table, an automatic control system and a power system, and is characterized by further comprising a full-section channel trimming system (30), a loading system, a material distribution system, a vibrating, striking-off and compacting system and a parting and molding system, wherein the loading system, the material distribution system and the vibrating, striking-off and compacting system are sequentially connected, and the full-section channel trimming system (30), the vibrating, striking-off and compacting system and the parting and molding system are sequentially connected. By adopting the full-section multi-functional channel concrete lining machine, trimming of the channel before the lining operation, automatic arrangement of slurry, overall operation of lining of the channel, integrated cutting of longitudinal and transverse parting and automatic alignment of the height of the whole machine can be realized, and the full-section multi-functional channel concrete lining machine can completevarious operations of the channel by walking along the channel once, thereby greatly improving the operation efficiency, simultaneously enabling the operation quality of the channel after lining to be good, and being good in thickness consistency.

The invention belongs to the technical field of electrochemistry, and particularly relates to a high-energy-density lithium iron phosphate battery. A positive electrode active material is selected from titanium/magnesium-doped lithium iron phosphate, the surface density of a positive plate is 190-210 g/m<2>, the compaction density is greater than or equal to 2.60 g/cc, a negative electrode active material is carbon-coated single particle and secondary particle needle coke blend artificial graphite, and the compaction density of a negative plate is greater than or equal to 1.70 g/cc. The density of the electrolyte is equal to 1.15 g/cc, the wall thickness of the aluminum shell body is 0.40-0.50 mm, a positive electrode current collector is an aluminum foil with the diameter of 12-13 [mu]m, a negative electrode current collector is a copper foil with the diameter of 4.5 [mu]m, a diaphragm is a 7 + 2C + 2P ceramic gluing diaphragm, a conductive binder is used for replacing a positive electrode, the addition amount is 1.0-2.0%, and the weight ratio of a positive electrode active material to a positive electrode dressing is greater than or equal to 98%. According to the invention, the energy density of the battery is greatly improved and reaches 200Wh/kg.

The invention provides a sheet bonding material and a magnetic workpiece and a preparation method and application thereof, and relates to the field of magnetic material bonding. The sheet bonding material comprises an insulating layer and glue layers disposed on the two opposite surfaces of the insulating layer. The inventor finds that the sheet bonding material has a simple structure, a uniform thickness, easy control of the thickness of the sheet bonding material, no bubbles and excellent bonding and insulating effects.

The invention provides a pole piece, a preparation method thereof and a battery. The preparation method comprises the following steps: (1) an active substance, a conductive agent, a solvent and a binder are mixed and granulatedto obtain mixed particles; and (2) the mixed particles obtained in the step (1) and a current collector are subjected to film combining in a film combining machine, the pole piece is obtained, and the number of rollers of the film combining machine is three or more than three. According to the preparation method provided by the invention, the pole piece can obtain relatively good porosity under the condition of keeping relatively high compaction density, so that the battery has relatively good discharge capacity, especially the discharge capacity under relatively high current and relatively low temperature conditions, and meanwhile, the thickness consistency of the pole piece is good. In addition, the method is simple in manufacturing process, high in automation level and capable of achieving one-process output from feeding to pole piece forming.

The invention provides a fin type field effect transistor formation method comprising the steps that a substrate is provided, and multiple discrete fin parts are formed on the surface of the substrate; a shielding layer covering the surface of the fin parts is formed by adopting the deposition technology, and reactant gases of the deposition technology include a main source gas and an oxygen source gas, wherein the main source gas is gas including fin part material atoms; a photoresist film is formed on the surface of the shielding layer; exposure processing and development processing are performed on the photoresist film so that a patterned photoresist layer is formed; the patterned photoresist layer acts as a mask film, and the doping technology is performed on part of the fin parts; the patterned photoresist layer is removed; and the shielding layer is removed. In the technology process of formation of the shielding layer, consumption of the fin part material is low and even no fin part material is consumed so that the characteristic dimension of the fin parts is maintained to be unchanged. Besides, damage to the fin part material in the process of development processing can be prevented by the shielding layer so that the formed fin type field effect transistor is enabled to possess excellent electrical performance.

The invention discloses a powder spreading device of a 3D printer. The device comprises a powder falling part, a powder feeding part and a powder spreading part, the powder falling part comprises a powder falling hopper and a powder storage bin, the powder storage bin comprises an upper end plate, a side baffle, an adjusting plate after powder falling, a side plate, an adjusting plate before powder falling, a spiral shaft and a powder falling assembly fixed support, a powder falling motor is mounted at one end of the side plate, the powder feeding part comprises two powder feeding assembly fixed supports, a powder feeding driving shaft, a powder feeding driven shaft bearing pedestal, and a powder feeding driven shaft, a powder feeding conveying belt is mounted between the powder feeding driven shaft and the powder feeding driving shaft, a powder feeding motor is mounted beside the powder feeding assembly fixed supports, the powder spreading part comprises two powder spreading assemblyfixed supports, a powder spreading cross beam, a powder spreading roller bearing pedestal and a powder spreading motor base, a powder spreading roller is rotatably connected between the powder spreading roller bearing pedestal and the powder spreading motor base, and a powder spreading motor is fixedly mounted on the powder spreading base. Through the above arrangement, powder is not prone to blocking the powder falling opening, and the powder can be evenly spread on the whole powder spreading path at the same time.

The invention provides a resin composition, a prepreg containing the resin composition and a dielectric substrate for an antenna. The resin composition is prepared from the following components: thermosetting resin with unsaturated double bonds, a resin melt viscosity adjusting material, an inorganic nano viscosity adjusting material, hollow microspheres which are not treated by alkali liquor, non-hollow inorganic filler, a flame retardant and an initiator, wherein the mass sum of the resin melt viscosity adjusting material and the inorganic nano viscosity adjusting material accounts for 3-6%of the total mass of the resin composition, and the mass ratio of the resin melt viscosity adjusting material to the inorganic nano viscosity adjusting material is (1-25): 1. The dielectric substrateobtained by adopting the resin composition provided by the invention has the advantages of low dielectric constant, low dielectric loss and excellent consistency of thickness and dielectric constant,and can meet the performance requirements of the dielectric substrate for the low-dielectric-constant antenna.

The invention discloses a manufacturing process of a motor stator core. The manufacturing process comprises the following process steps of: step A, feeding; step B, punching a pilot hole; step C, punching metering points or buckling points, wherein each pair of metering points or buckling points are distributed in a central symmetry mode relative to the same point; and step D, blanking, namely carrying out stamping and blanking at the positions, punched with the metering points or the buckling points, of a strip material by utilizing a rotary stamping device with a rotatable female die to obtain a stator core monomer sheet temporarily stored in the rotary stamping device, and performing punching and blanking for multiple times repeatedly, rotating the female die by 180 degrees at least once after punching and blanking are finished each time, stacking the stator core single sheets obtained through punching and blanking for multiple times in the rotary punching device and finally enabling thestator core single sheets to fall off from the rotary punching device in the form of stator core single blocks; and step E, assembling, namely annularly splicing the plurality of stator core monomer blocks. The manufacturing process has the advantages that the produced stator iron core is good in thickness consistency, small in size difference and good in quality control.

The invention provides a resin composition, a prepreg containing the resin composition, a dielectric substrate and a printed circuit board. The resin composition comprises the following components: (A) thermosetting resin with unsaturated double bonds; (B) a resin film-forming property improving material; (C) Hexagonal boron nitride; D, any one or a combination of at least two of aluminum nitride,silicon nitride or silicon carbide; (E) other inorganic fillers except the components (C) and (D); (F) a flame retardant and (G) an initiator, wherein the mass sum of the component (C), the component(D) and the component (E) accounts for 60-80% of the total mass of the resin composition, and the mass ratio of the component (C) to the component (D) is (1-4): 2. The dielectric substrate obtained by using the resin composition provided by the invention has the advantages of low dielectric constant, low dielectric loss, high thermal conductivity and stable thickness and dielectric constant, andcan fully meet the requirements of a high-frequency high-thermal-conductivity dielectric substrate.

The invention discloses an application method of anti-corrosion pitch for a 500kV power cable and aims to solve the problems that in the prior art, pitch for large-specification power cables is poor in application quality and is applied unevenly, and missing application is prone to occur. The method comprises the steps that the qualified cable pitch is selected and heated to the liquid state; the pitch in the liquid state is sprayed to the surface of a metal sheath in four radial directions of a cable core of the metal sheath of the cable; extruding application is conducted through a rubber mold; and then after being heated through a heater, the pitch enters a machine head of an extruding machine, so that the even pitch application process is completed. The method has the beneficial effects that a pitch anti-corrosion layer of the metal sheath is applied evenly; thickness consistency is good; the metal sheath is covered completely, and no missing application occurs; it is guaranteed that the metal protection layer of the cable is excellent in anti-corrosion property; and the surface of the outer sheath of the cable is god in quality.

The invention provides a semiconductor silicon-based optical waveguide device and a preparation method thereof, and relates to the field of optical waveguide chip producing and manufacturing. The preparation method of the semiconductor silicon-based optical waveguide device comprises the following steps that (a) a bottom cladding layer is deposited on a non-polished surface of a single-surface-polished silicon wafer; (b) a lower cladding layer, a core layer and a mask layer are deposited in an overlapped mode in sequence on a polished surface of the single-surface-polished silicon wafer; (c) awaveguide channel is formed after the core layer is etched, and the mask layer is removed; and (d) an upper cladding layer is deposited on the etched core layer, and thus the semiconductor silicon-based optical waveguide device is obtained. Preferably, the mask layer is a metal mask layer, and the technical problems that quartz substrate slices are used in conventional waveguide devices, the dependency on the quality of the substrate slices is high and special quartz processing equipment needs to be ordered for manufacturing are solved. According to the preparation method of the semiconductorsilicon-based optical waveguide device, semiconductor silicon is adopted as a substrate slice, compatibility with silicon semiconductor manufacturing equipment is good, the influence of the substrateslice refractive index is avoided, and design and manufacturing are more flexible.

The invention discloses a special rotary drum for small-specification neodymium-iron-boron magnetic steel barrel plating. The special rotary drum comprises a support and a drum body rotatably connected to the support, wherein the drum body is in a shape with two smaller ends and a larger middle portion in the axial direction. According to the special rotary drum, the problems that in the prior art, a small-specification product is prone to attaching to an end wall or a dead angle is formed, so that the bonding force between a base body and a plating layer is reduced, the protective property ofthe plating layer is reduced, the magnetic decay rate of the product is increased, the qaulification rate of the product is reduced, the discharging time is increased, and the production efficiency is reduced are solved, piece sticking and wall attaching during the barrel plating of the product are prevented, the bonding force of the base body and the plating layer is improved, and the protectivecapability of the plating layer is improved; and during electroplating, power line distribution is concentrated, the deposition speed is increased, the magnetic decay rate of the product is reduced,the qualification rate of the product is increased, the discharging speed is high, and the production efficiency is improved.

The invention discloses an online adjustment monitoring system for line pressure of a rolling machine. The online adjustment monitoring system comprises a Programmable Logic Controller (PLC) (11), a human-machine interface (HMI) (12), a first pressure transmitter (21), a second pressure transmitter (22), a third pressure transmitter (23), a fourth pressure transmitter (24), a hydraulic station total pressure transmitter (25), a hydraulic station proportional pressure reducing valve (31), an operation skew iron motor (32) and a driving skew iron motor (33). The Programmable Logic Controller (PLC) (11) is connected with the first pressure transmitter (21), the second pressure transmitter (22), the third pressure transmitter (23), the fourth pressure transmitter (24) and the hydraulic stationproportional pressure reducing valve (31) through signal lines. According to the online adjustment monitoring system for the line pressure of the rolling machine, the line pressure in the rolling process can be accurately controlled, the line pressure in the rolling process is constant, and therefore high-quality pole pieces with good thickness consistency and small range can be output.