418 results about "Process manufacturing" patented technology

A one time programmable memory cell having an anti-fuse device with a low threshold voltage independent of core circuit process manufacturing technology is presented. A two transistor memory cell having a pass transistor and an anti-fuse device, or a single transistor memory cell having a dual thickness gate oxide, are formed in a high voltage well that is formed for high voltage transistors. The threshold voltage of the anti-fuse device differs from the threshold voltages of any transistor in the core circuits of the memory device, but has a gate oxide thickness that is the same as a transistor in the core circuits. The pass transistor has a threshold voltage that differs from the threshold voltages of any transistor in the core circuits, and has a gate oxide thickness that differs from any transistor in the core circuits. The threshold voltage of the anti-fuse device is lowered by omitting some or all of the threshold adjustment implants that is used for high voltage transistors fabricated in the I/O circuits.

The invention discloses a digital calibration method for a high-precision SAR ADC (successive approximation register analog to digital converter). The method comprises the following steps of (1) designing of a calibration DAC (digital to analog converter), digitalizing the error voltage of each capacitor in the high segment of a main DAC, and carrying out digital to analog conversion on the processed calibration codes; (2) designing of digital calibration time sequence, obtaining the calibration codes, maintaining sampling, and gradually converting. The method is applied to the high-precision SAR ADC, and a capacitor array of the high segment in the sectional main DAC is subjected to digital calibration, so the mismatch of the capacitors caused by parasitic capacitors and the process manufacturing error is reduced, the problem of unable realizing of precise double relationship due to the mismatch of the adjacent capacitors in the high segment is greatly corrected, and the precision of the SAR ADC is effectively improved.

The invention relates to composite material structure design in aerospace structures, and provides an efficient optimization method for a variable stiffness composite material plate shell structure. The method includes the steps: performing curve fiber path accurate modeling and buckling analysis on the variable stiffness composite material plate shell structure based on an isogeometric method; building an isogeometric buckling design model of the structure; deriving total analytical sensitivity of buckling response of the variable stiffness composite material plate shell structure; efficiently optimizing fiber paths of the variable stiffness composite material plate shell structure by a gradient-based method to obtain an optimal structure meeting process manufacturing constraints. According to the structure, the carrying efficiency of the variable stiffness composite material plate shell structure can be remarkably improved, and the development period of products is greatly shortened.

The invention discloses a method for machining an aircraft skin part. The method comprises the following steps that (1) process digital-analog information is extracted; (2) a neutral layer is projected; (3) the neutral layer is unfolded; (4) the unfolding face of the neutral layer is projected; and (5) a chemical milling sample plate and the skin part are machined. The sample plate meeting process requirements is directly produced through three-dimensional unfolding digital-analog calculation. According to the method for machining the aircraft skin part, the manufacturing precision of the part is effectively improved, machining accumulated errors are reduced, and the machining process meets the process manufacturing requirement. Meanwhile, the delivery cycle of the skin part is greatly shortened, and the material utilization rate is improved. An MMS mirror image milling matching edge flexible clamping system is adopted, and the method adapts to skins of various specifications; the space locating and clamping rigidity of workpieces is guaranteed, and productivity and production flexibility are greatly improved.

The invention discloses a manufacturing method of a circuit board plated hole. The manufacturing method comprises the following steps of material cutting, internal layer, inspection, pressing, manufacturing the drilling target locating hole for drilling the resin filling hole, drilling the resin filling hole, primary copper plating, whole plate copper plating, film drying before hole plating, holeelectroplating, film stripping, resin hole filling, resin grinding, manufacturing the drilling target locating hole for drilling the non-resin-filling hole, drilling the non-resin-filling hole, secondary copper plating and secondary whole plate electroplating. The method that the resin filling hole is completed and then the non-resin-filling hole and the external line are completed is adopted sothat the phenomenon of non-uniform copper thickness after whole plate copper thickening and chemical copper thinning can be successfully solved, the porthole pit abnormity of the resin filling hole after chemical copper thinning can be avoided, the manufacturing yield rate can be greatly enhanced, the process manufacturing capability can be powerfully enhanced and thus wide application and preference of the circuit board manufacturers can be received. The manufacturing method of the circuit board plated hole is widely suitable for the technical field of circuit board production.

The invention relates to a ceramic product with a digital process manufacturing mold effect texture. The ceramic product has a three-dimensional concave and convex mold effect texture on the surface,the mold effect texture is made in a digital process mode, and the mold effect texture is formed by forming a texture pattern of a sinking depth of 0.5-3mm in the surface of a glaze layer including apattern layer of a product. According to the ceramic product provided by the invention and the manufacturing method of the ceramic product a conventional physical mold is replaced by the mold effect texture which is made by using a novel digital process and has a controllable sinking depth of 0.5-3mm, digital designing output is directly implemented, the texture can be achieved without changing pressing molds, directions modern environment protection and automatic intelligent manufacturing can be well met, in addition, defects of surface three-dimensional feelings and sharpness of a conventional texture mold can be well solved, the mold effect can be good in three-dimensional feeling, reality and tough feeling, and the digital manufacturing process can be easy to use.

The invention belongs to the field of manufacture of an electrical steel sheet, and particularly relates to a short-process manufacturing method of a cold rolling non-oriented high-silicon steel sheet. The short-process manufacturing method comprises the following steps: firstly smelting molten steel which meets the requirements of chemical components of high-silicon steel; then pouring the molten steel into a tundish, carrying out crystallizing roller cast rolling to lead a non-oriented thin high-silicon steel strip out, and carrying out hot rolling on the thin high-silicon steel strip to obtain a hot rolling plate; cooling the hot rolling plate to 150-300 DEG C for warm rolling to obtain a high-silicon steel warm rolling plate; pickling to remove iron oxide scale positioned on a surface, and carrying out cold rolling at 50-100 DEG C to obtain a high-silicon steel cold rolling plate with the thickness of 0.2-0.35 mm; annealing the high-silicon steel cold rolling plate in a hydrogen atmosphere to obtain the cold rolling non-oriented high-silicon steel sheet with 6.5% by weight of Si. According to the technical scheme, a method which combines the cast rolling, the hot rolling, the warm rolling and the cold rolling is adopted; the adopted warm rolling is low in temperature, so that the problem of bad warm rolling plate shape caused by thermal crown is prevented; and especially, the problem of poor surface quality is solved by adopting the cold rolling, so that a thin-specification non-oriented high-silicon steel sheet product with good plate shape and excellent surface quality is easy to manufacture.

The invention relates to an ultrathin oriented silicon steel sheet and a short-process manufacturing method thereof. The steel sheet comprises the following components in percentage by mass: 0.002-0.08% of C, 2.8-3.4% of Si, 0.05-0.30% of Mn, 0.015-0.04% of S, 0.005-0.05% of Als, 0.003-0.010% of N, 0-0.6% of Cu, 0-0.2% of Sn, less than 0.004% of O, less than 0.01% of P and the balance of Fe. The thickness of the product is 0.05-0.15mm. The manufacturing method comprises the following steps: (1) smelting molten steel; (2) carrying out continuous casting to obtain a casting band; (3) cooling, carrying out hot rolling and coiling; (4) carrying out normalizing treatment and controlled cooling; (5) pickling, and carrying out primary cold rolling; carrying out interannealing; (6) pickling, and carrying out secondary cold rolling; carrying out decarburizing annealing; (7) coating an annealing separant; and (8) carrying out high-temperature annealing and purification annealing. The method greatly simplifies the ultrathin oriented silicon steel sheet production process, is simple and effective, and has the characteristics of short process, high controllability and low energy consumption.

The invention relates to a flash memory life test method based on an error mode. The method comprises the following steps: extracting a sample flash memory and connecting a sample flash memory chip with a flash memory test system; writing a test pattern accelerating wearing or a test pattern exciting an error into the flash memory; reading the data in the sample flash memory, recording the original error bit rate and comparing the original error bit rate with the ECC error correction capability of the sample flash memory; and repeating the read and write operation on the sample flash memory chip when the original error bit rate is less than the ECC error correction capability, or the sample flash memory is proved to be damaged and the lifetime of the sample flash memory is the number of erase operation. The characteristics of oxide degradation and present flash memory chip process manufacturing are combined, the specific high-efficiency flash memory test pattern based on the error modeis adopt to accelerate wearing of the flash memory chip and excite the inherent defects of the internal unit of the flash memory chip so as to realize fast flash memory detection.

The invention provides an integral central wing box made of composite materials, which comprises a front beam, an upper wall plate, a lower wall plate and a rear beam, wherein the upper wall plate is over against the lower wall plate; the front beam and the rear beam are arranged over against each other on both sides of the central wing box, and both ends of the front beam and the rear beam are respectively connected with the upper wall plate and the lower wall plate; and the central wing box is integrated from the upper wall plate, the lower wall plate, the front beam and the rear beam. According to the integral central wing box, the advanced performance of the structure is improved and the sealing safety of an oil tank is improved, and the process manufacturing and assembly difficulty is reduced, so that the cost is reduced.

The invention discloses a processing method of a steel piston gas ring, which comprises the following steps: winding-destressing-grooving-shaping-top line trimming-flat surface grinding-excircle boning-chroming or nitriding-top line trimming-excircle boning-top line trimming-flat surface grinding; the size of a shaped blank rod is improved by calculating pressure distribution mold lines with different ovality requirements and fully considering the mold line change caused by nitriding shrinkage, thereby the problem of gas ring deformation after procedures, such as nitridation, and the like is greatly reduced, and the finished product ratio of the product is improved. Compared with the defects of long process routes, multi-workshop crossing processing and low comprehensive finished product ratio in the casting iron gas ring, the comprehensive finished product ratio of the steel gas ring processed by using the shaped blank rod can reach up to 95 percent. By utilizing the pliability characteristic of the steel and adopting a shaped steel winding and shaping process, the invention solves the fussy machining process of cast iron material, shortens the manufacturing period, also reduces the procedure waste simultaneously and saves the process manufacturing cost.

Certain aspects of a method and system for a process sensor to compensate SoC parameters in the presence of IC process manufacturing variations are disclosed. Aspects of one method may include determining an amount of process variation associated with at least one transistor within a single integrated circuit. The determined amount of process variation may be compensated by utilizing a process dependent current, a bandgap current, and a current associated with a present temperature of the transistor. The process dependent current, the bandgap current and the current associated with the present temperature of the transistor may be combined to generate an output current. A voltage generated across a variable resistor may be determined based on the generated output current.

The invention discloses a method for manufacturing a novel super-junction semiconductor device with an extended groove. By key process steps of multiple-time extending, multiple-time injecting and etching the extended groove, filling and leveling an insulating medium and then forming an active layer and an electrode and the like, the method realizes the process manufacturing of a novel super-junction structure and super-junction semiconductor device. Compared with the prior art, the method has the following advantages that first, a narrow P column area or N column area with high concentration can be formed to be beneficial to reducing on-resistance; second, the bottom of a groove gate is flush with the lower interface of a body area or is slightly lower than the lower interface of the body area, therefore the withstand voltage performance of the device is increased, and the gate-source and gate-drain capacitance is reduced; third, complicated masking is not needed, and the influence of a small-angle injection technology to a channel region is avoided; and fourth, the negative influences of the extended groove filling and leveling, groove gate manufacturing and leveling to the formed body area, the body contact area and the active area are avoided.

The invention discloses a method for manufacturing a groove type longitudinal semiconductor device, belonging to the technical field of manufacture of semiconductor devices. In the invention, the process manufacturing of the groove type longitudinal semiconductor device can be realized through the process steps such as deep groove etching, high-temperature diffusion, insulating medium padding and planarization, active layer and electrode forming and the like. Compared with the existing process, the process method disclosed by the invention has the following advantages: firstly, a narrow and high-concentration P column region or N column region (namely a second semiconductor drift region) are be formed, thereby being beneficial to reduction of on resistance and decrease of horizontal dimension of the device; secondly, the bottom of a groove grid is ensured to be parallel to the lower interface of a body region or be slightly lower than the lower interface of the body region, further improving the withstand voltage of the device and reducing the low-grid and grid-drain capacitance; and thirdly, complicated masking is not required, and the influence of small-angle injection to the channel region can be avoided; and fourthly, the negative influence on the formed body region, body contact region and source region caused by the padding and planarization of the extended groove as well as manufacturing and planarization of the groove grid can be avoided.

The invention relates to the technical field of transducers and provides an ultrasonic transducer, a gradual-change sound impedance matching layer and a manufacturing method of the gradual-change sound impedance matching layer. The gradual-change sound impedance matching layer comprises a body. Sound impedance of the body is gradually changed from one end of the body to the other end of the body continuously, and the body is made from a tackifier and at least one powder base material. By the adoption of the tackifier and the powder base material, the required raw materials of the manufactured gradual-change sound impedance matching layer are small, operation is convenient, the manufacturing cycle is short, production is easy to conduct, and industrialization is achieved; and furthermore, the efficiency for transmitting sound energy to an object to be detected is improved remarkably, meanwhile, the process manufacturing procedure can be optimized, it is avoided that the tackifier is introduced to bond multiple matching layers, the time domain response and frequency domain response of the ultrasonic traducer are further improved, and the sensitivity of the ultrasonic traducer is improved remarkably, and the bandwidth of the ultrasonic traducer is increased remarkably.

The invention relates to a method for carrying out dispatching control on a multi-variety multi-process manufacturing enterprise workshop on the basis of an AC (Automatic Circuit Analyzer) model, which comprises the following steps of: 1, setting a target function of the multi-variety multi-process manufacturing enterprise workshop, and when task information of a task Agent is sent to a decision Agent by a coordination Agent, representing the task information with a directed graph G by the decision Agent and using a dispatching rule which is obtained by the decision Agent through a random algorithm as an initial solution of a tabu search algorithm; 2, by a rule decision element Agent, firstly, calculating a target value F, then searching other dispatching methods from the dispatching field by the tabu search algorithm, and using a solution with the minimum target value as the adopted rule; and 3, carrying out state changing on each cell (i.e. a station) in a cell space according to the dispatching rule awarded by the rule decision element. According to the invention, a complex dispatching system can be described, the practical production is well reflected, the computational efficiency of a model is also considered, and the problem of dispatching the dynamic and complex multi-variety multi-process manufacturing enterprise workshop is rapidly and accurately solved.

The invention provides a modeling and packaging method for process tolerance and electric performance coupling characteristics in radio frequency integration. The method starts from development and application of process IP models to put forward an integrated scheme which is compatible with existing modeling algorithms and rapidly and correctly realizes model development, integrated packaging andupdating maintenance by utilizing data of electromagnetic simulation combined test, and the integrated scheme is particularly suitable for modeling and simulation of process tolerance and electric performance coupling characteristics in radio frequency microwave integration. According to the method, processing and modeling are carried out on process tolerance data in integrated manufacturing, andmanufacture process levels are truly fed back to designers for calling through a standard IP library form, so that system-level simulation can cover analysis of process tolerance, the simulation is capable of rapidly and effectively verifying influences, on system performance, of the process manufacturing levels, and benefit is brought to shorten the design verification period.

The invention provides a time-of-flight depth camera and a single-frequency modulation-demodulation noise-reducing distance measuring method. The time-of-flight depth camera comprises a transmitting module, an acquisition module and a processing circuit, wherein the transmitting module comprises a light source which is used for transmitting a pulse beam to an object to be measured; the acquisitionmodule comprises an image sensor composed of at least one pixel, each pixel comprises at least three taps, and the taps are sued for acquiring a charge signal generated by a reflected pulse beam which is reflected by means of the object to be measured and/or a charge signal of background light; and the processing circuit is used for controlling the at least three taps to acquire the charge signals alternatively between at least three frame periods of a macro period, and receiving data of the charge signals to calculate a time of flight of the pulse beam and/or a distance of the object to be measured. The expansion of the measurement distance is no longer limited by the pulse width, and the fixed-pattern noise caused by mismatch between the taps or read-out circuits due to process manufacturing errors and the like is reduced or eliminated by adopting a tap alternative acquisition method.

Serial-type equipment for manufacture of a double-faced heterojunction solar cell in a plasma enhanced chemical vapor deposition (PECVD) method comprises a deposit cavity. The deposit cavity comprises a serial-type wafer in-out chamber, a preheating chamber, an intrinsic layer deposit chamber, a p-type deposit chamber, an n-type deposit chamber and a wafer outlet chamber. A process manufacturing the double-faced heterojunction solar cell in the PECVD method is adopted through the serial-type equipment for the manufacture of the double-faced heterojunction solar cell in the PECVD method, and the intrinsic layer deposit for the front and the back of a silicon wafer can be completed in the same chamber. According to the serial-type equipment and the process, the working procedure of turning over the silicon wafer can be eliminated, equipment manufacture cost and production time are saved, and the deposit for the front and the back of the silicon wafer can be well achieved.

A method and system for simulating, modeling and scheduling equipment preparation procedures in the biopharmaceutical production process is described herein. The use of process vessels in batch process manufacturing is optimized through the use of peak load scheduling frames. The system and method includes the steps of identifying soiled process components and their associated equipment preparation procedures. After the soiled process components are identified, a master list of soiled process components and their associated equipment preparation procedures is generated. After the soiled process components and the equipment preparation procedures are identified, the equipment preparation procedures are scheduled out based on preparation equipment protocols to generate a equipment preparation load summary table. Next, the size and capacity of the preparation equipment is determined based on the information in the load summary table. After the size and capacity of the preparation equipment is determined, an equipment preparation time line is generated.

The invention discloses a manufacturing method of a cross-shaped box type joint. The method includes assembling and splicing of a cross-shaped column and a box type column. Firstly, the cross-shaped column is assembled and spliced, wherein the cross-shaped column comprises H-shaped steel and two pieces of T-shaped steel; secondly, the box type column is assembled and spliced, wherein a bottom plate and interior of the box type column are assembled, a U-shaped structure of the box type column is assembled, a deformed part is corrected to be qualified according to process manufacturing requirements, and a cover plate of the box type column is assembled; and thirdly, a transition inlaying section is welded. According to the method, a top partition plate welding seam of the box type column iswelded, then the cross-shaped column and the box type column are welded to be connected with the welding seam, and finally, wing plates of the cross-shaped column and the cover plate of the box type column are in butt joint with the welding seam, so that the stress concentration problem is well avoided. The connecting welding seam between the cross-shaped column and the box type column adopts opengroove external plug welding, so that the situation that a welding hole is formed in the end of the cross-shaped column or in the outer side of the box type column and accordingly the appearance of acomponent is affected is avoided, the welding quality of the cross-shaped column and the box type column is controllable, and the cross-shaped box type cross section welding process is optimized.

The invention provides a method for manufacturing of a low-cost super-thick steel plate by a short process. The method includes: conducting smelting, continuous casting, and cutting, then performing stacking slow cooling for 20-30h, cleaning the surfaces and lateral sides of blanks, and maintaining the roughness at 6.3 micrometers; subjecting the two blanks to involution, then performing vacuum pumping and welding to maintain the thickness of the combined blank at 200-300mm; sending the combined blank into a walking beam type heating furnace, conducting preheating at a slow heating speed, controlling cold charging at 12-13min/cm, employing a normal speed at a heating section, prolonging the heat preservation time of a soaking section by 0-30min, and keeping the tapping temperature higher than or equal to 1100DEG C; after phosphorus removal, employing direct rolling or TMCP rolling, controlling the initial rolling temperature of rough rolling higher than or equal to 1050DEG C, keeping a first pass reduction rate higher than or equal to 10% and a cumulative reduction rate higher than or equal to 30%; and controlling the initial rolling temperature and the final rolling temperature of finish rolling at technological parameter lower limits, controlling a compression ratio at 1.8-2.5, and carrying out air cooling or controlled cooling after rolling as well as a heat treatment. The super-thick steel plate product produced at a small compression ratio has good quality and uniform performance. And the method provided in the invention has low energy consumption and fast rolling pace, is suitable for industrial mass production, and has significant economic and social benefits.

Manufacturing processes of a leadframe-based BGA package and a leadless leadframe implemented in the processes are disclosed. The leadless leadframe has a plurality of bottom leads and a plurality of top soldering pads formed in different layers. After encapsulation and before solder ball placement, a half-etching process is performed to remove the bottom leads to make the top soldering pads electrically isolated, exposed and embedded in the encapsulant for solder ball placement where the soldering area of the top soldering pads is defined without the need of solder mask(s) to solve the diffusion of solder balls on the leads during reflow. Moreover, mold flash can easily be detected and removed. The overall package cost can be reduced.

The invention relates to methods for expressing and operating relationships of process manufacturing procedures, wherein a series of matrix or vector to procedure relationships are designed for modeling in the method for expressing the relationships, specifically, the following matrixes or vectors are comprised, such as a procedure name vector, a procedure equipment quantity vector, a vector of product quantity in one batch, reachability matrixes among procedure equipment, transport time matrixes among procedures, a multi-process route matrix, reachability weight matrixes among the procedure equipment, processing starting time and ending time matrixes of products, and processing device distribution matrixes of the products in all procedures. The method for operating the relationships is used for operating the relationships of the procedures by using a matrix calculating manner. Compared with the prior art, the methods are simpler and general, and have better flexibility and expandability; and the integration degree of the expressing and the operating methods of the relationships of the procedures and an information system as well as a solution scheme is improved.