Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

140results about How to "Large margin" patented technology

Magnetic memory cell and magnetic random access memory using the same

In a magnetic random access memory, a memory cell includes a magnetic field generating section having an extension wiring line, and connected with a first selected bit line, a conductive pattern, and a magnetic resistance element having a spontaneous magnetization, storing a data and connected between the extension wiring line and the conductive pattern. In a data write operation into the memory cell, a write data is written in the magnetic resistance element of the memory cell by a write electric current which flows through the extension wiring line of the magnetic field generating section of the memory cell, and a value of the write data is determined based on a direction of the write electric current. In a data read operation from the memory cell, a read electric current flows through the extension wiring line of the magnetic field generating section and the magnetic resistance element in the memory cell. A memory cell array section includes the memory cells arranged in a matrix, and each memory cell is connected with a first word line and a first bit line at least, the gate section.
Owner:NEC CORP

Broadband mobile communication method and system based on multi-beam GEO satellite

The invention discloses a broadband mobile communication method based on a multi-beam GEO satellite. The broadband mobile communication method based on the multi-beam GEO satellite mainly comprises the steps that spot beams at the Ka frequency band are adopted by NG+1 bidirectional feed links between a satellite-borne device and a ground station device, so that space division multiplexing is achieved for NG+1 times; a cellular network with NB cells is formed through NB bidirectional user links between the satellite-borne device and NT mobile user terminals based on an NB-beam satellite antenna, and space division multiplexing is achieved for NB/4 times with every four cells as a group, so that a 260 MHz bandwidth resource can be shared. The invention further discloses a broadband mobile communication system based on the multi-beam GEO satellite. According to the broadband mobile communication method and system based on the multi-beam GEO satellite, any one of the NT mobile user terminals can serve as an independent multimedia communication terminal as well as a local area network connected with a public Internet and can have access to a remote URL through the satellite links of the system, and an Internet service on the level similar to the 4G mobile communication level can be provided for a large number of people on various vehicles.
Owner:XIDIAN UNIV

Welding method of ultra-thick and high-strength water-power steel

The invention relates to a welding method of ultra-thick and high-strength water-power steel, belonging to the welding field. Welding is realized by adopting a mixed welding mode, i.e. hand welding is adopted as a basis for filling the bottom, and gas shielded welding is adopted for a middle layer and a cover part, multilayer and multi-pass welding are adopted, a carbon arc is cropped out after a single side is filled, and the input of welding heat is controlled within 65 kJ / cm. A welding bevel adopts an asymmetric U-shaped bevel, a thick steel plate of 145-155 mm is preheated to 100 DEG C before welding, the inter-layer temperature is kept between 100 DEG C to 160 DEG C, and heat treatment stress is not carried out after welding, and the problem of reheat embrittlement of a welding joint of the high-strength water-power steel is solved. The invention needs simple welding equipment, realizes welding through a combined welding process on the basis of the traditional equipment, reduces the filling amount of welding metal, and achieves the welding effect of a narrow gap. Compared with the hand arc welding, the invention greatly improves the welding efficiency of the thick steel plate and lowers the possibility of welding defects easily generated on the hand arc welding of an ultra-thick steel plate, such as cold cracks, incomplete fusion, crisp fusion, and the like.
Owner:SHOUGANG CORPORATION +1

Column shaped spacer and LCD panel thereof

The invention relates to a cylindrical spacer which comprises a cylindrical part that has a base end connected with a substrate of liquid crystal display panel and a top end supporting the other substrate of liquid crystal display panel. The top end of cylindrical part is a projection structure which is high at central part and low at external part, or a concave structure which is low at central part and high at external part. The invention also relates to a liquid crystal display panel which comprises a color film substrate and an array substrate, and a cylindrical spacer which has a base end connected with the color film substrate and a top end supporting the array substrate. The top end of cylindrical spacer is a projection structure or a concave structure which has larger preset deformation force and larger deformation allowance. The liquid crystal display panel according to the invention simultaneously increases the allowed filling high limit of liquid crystal and allowed filling lower limit of liquid crystal, can provide a liquid crystal layer allowance with larger range, reduce the technical requirement for the box, and increases the picture quality of liquid crystal display.
Owner:K TRONICS (SUZHOU) TECH CO LTD +1

Cable protection sleeve and cable assembly

The invention provides a cable protection sleeve and a cable assembly. The cable protection sleeve includes a threading sleeve body, the periphery of the threading sleeve body is provided with a circular groove, at least one of two groove walls of the circular grove is provided with a sealing skirt edge extending towards the other groove wall opposite to the groove wall and used for pressing against a hole edge of a wire outlet hole, an outer circumferential surface or an inner circumferential surface of the sealing skirt edge is a conical surface used for being pushed by the hole edge of the wire outlet hole and clinging to the hole edge through radial slippage elastic deformation and axial compression elastic deformation so as to seal the wire outlet hole, and the conical surface gradually closes or opens in a direction from front to back. In use, radial and axial deformation of the sealing skirt edge on the groove wall of the circular groove occur when the sealing skirt edge is extruded by the hole edge of the wire outlet hole, and enable the sealing skirt edge to have a very large deformation amount, when deformation of the wall groove of the circular grove occurs due to a swing or bending of a cable, the sealing skirt edge does not completely disengage from the hole edge, thereby ensuring that the sealing skirt edge is capable of clinging to the hole edge at all times, and relatively high sealing waterproofness is achieved.
Owner:CHINA AVIATION OPTICAL-ELECTRICAL TECH CO LTD

Steel for nuclear power pressure-bearing equipment and manufacturing method thereof

ActiveCN103160732AGood intensity levelLittle decrease in strengthChemical compositionNon-metallic inclusions
The invention discloses steel used for nuclear power pressure-bearing equipment and a manufacturing method thereof. The steel comprises the following chemical components by weight: 0.12%-0.18% of C; 0.15%-0.35% of Si; 1.20%-1.65% of Mn; less than or equal to 0.015% of P; less than or equal to 0.010% of S, 0.50%-0.85% of Ni; less than or equal to 0.15% of Cr; 0.020%-0.050% of Al; less than or equal to 0.02% of V; less than or equal to 0.02% of Ti, and the balance Fe and unavoidable impurities. At the same time, non-metallic inclusions in the steel are controlled, and A, B, C and D impurities are guaranteed less than or equal to grade 1.5. The manufacturing method mainly includes steel smelting, rolling, as well as quenching and tempering treatment. Through further optimization of the chemical components, a heat treatment process, and reduction of gas and non-metallic inclusions in steel, the method enables the mechanical properties of a steel plate to be maintained at a high level under a heat treatment state, a simulated post-weld heat treatment state, and a 200DEG C high temperature state, so that the steel plate completely meets the technical index requirements. Meanwhile, the 0DEG C impact absorption energy is still maintained at a high level, and good matching of steel plate strength and toughness is reflected, so that the steel provided in the invention is completely suitable for nuclear power pressure-bearing equipment.
Owner:ANGANG STEEL CO LTD

Non-volatile semiconductor memory device and rewriting method

A non-volatile semiconductor memory device is provided, which comprises a memory array comprising memory cells, in which each memory cell is capable of storing data values depending on the voltages thereof, the data values include a first data value corresponding to a first voltage range and a second data value corresponding to a second voltage range, and the first data is written in a memory cell of the memory cells, a determination section for determining whether a voltage value of the memory cell is higher or lower than a reference value set between a maximum value and a minimum value of the first voltage range, and a rewrite section for rewriting the first data into the memory cell based on a determination result of the determination section so that a margin between the first voltage range and the second voltage range in the memory cell is enlarged.
Owner:SHARP KK

Steel for pressure bearing boundary part of steam generator in nuclear power plant and manufacturing method of steel

The invention discloses steel for a pressure bearing boundary part of a steam generator in a nuclear power plant and a manufacturing method of the steel. The steel comprises 0.15% to 0.22% of C, 0.10%to 0.30% of Si, 0.55% to 0.75% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, 0.30% to 0.60% of Ni, 0.70% to 1.10% of Cr, 0.80% to 1.50% of Mo, 0.020% to 0.040% of Al, 0.010% to 0.030% of Nb, 0.0005% to 0.002% of B, less than or equal to 0.05% of Cu and the balance of Fe and unavoidable impurities. A converter-continuous casting process is adopted when the thicknessof a steel plate is less than 80mm, wherein the heating temperature is 1180-1250 DEG C, the rolling starting temperature is greater than or equal to 1100 DEG C, and the rolling finishing temperature is greater than or equal to 900 DEG C; an electric furnace-die casting process is adopted when the thickness of the steel plate is greater than or equal to 80mm, wherein the heating temperature is greater than or equal to 1200 DEG C, the rolling starting temperature is greater than or equal to 1050 DEG C, and the rolling finishing temperature is greater than or equal to 850 DEG C; quenching and tempering treatment are performed on the steel plate after rolling; and the produced steel plate of 30-150mm has good high temperature performance and strong strength-toughness matching.
Owner:ANGANG STEEL CO LTD

Three-dimensional storage device and method for forming contact hole in step region

PendingCN108899322AReduce the probability of etch punch-throughLarge marginSolid-state devicesSemiconductor devicesEtchingInsulation layer
The invention provides a method for forming a contact hole in a step region of a three-dimensional storage device. The method comprises the following steps of providing a semiconductor structure, wherein the semiconductor structure has a step region, the step region has a plurality of step structures, and each step structure comprises at least one medium layer and at least one conducting layer inalternate stacking from top to bottom; removing a part of conducting layer material from the exposed side wall of at least one conducting layer of each step structure so as to form recessed parts opposite to the adjacent medium layers; covering an insulation layer in the step region; filling each recessed part by the insulation layer; removing the medium layer and the insulation layer on the uppersurface of the step region so as to expose the first conducting layer on the top of each step structure; meanwhile, remaining the insulation layer positioned at each recessed part; forming a second conducting layer on the first conducting layer on the top of each step layer; forming the contact hole on each step structure. The thickness of the conducting layer on the step region is increased, sothat greater allowance can be provided for the etching of the contact hole, so that the contact hole etching penetration probability is reduced.
Owner:YANGTZE MEMORY TECH CO LTD

Corporate aircraft engine upper placement and front swept wing duck type layout

InactiveCN103231795AReduce stallGuaranteed control efficiencyHeat reducing structuresJet aeroplaneAviation
The invention provides a corporate aircraft engine upper placement and front swept wing duck type layout, which belongs to the aviation field, and relates to a high lift drag ratio airplane total layout scheme. The airplane comprises a fuselage, duck wings, wings, a vertical fin, an engine and a rear body edge strip; the wing leading edge inner segment sweeps back; the wing leading edge outer segment sweeps forward, and the engine is supported on an upper surface of a rear body edge strip between a wing trailing edge and an edge strip rudder by an engine, and in the top view projection, an engine axis crosses the corner of the wing leading edge inner segment and the wing leading edge outer segment, and an elevator is arranged at the wing trailing edge, and an inner side elevating auxiliary wing is arranged at the inner side of the wing trailing edge inner side, and an outside elevating auxiliary wing is arranged at the outer side of the wing trailing edge; an edge strip rudder is arranged at the rear edge of the rear body edge strip, and a rudder is arranged at the rear edge of the vertical fin. The wing trailing edge inner segment is connected with a rear body edge strip; the edge strip rudder at the rear body edge strip trailing edge is in cracking type, and is composed of an upper rudder surface and a lower rudder surface, and the shapes of the fuselage and the wing are in smooth transition. The invention has the advantages of high rising and landing lift coefficient and high trim lift drag ratio, light structure weight, long endurance and long voyage.
Owner:AVIC CHENGDU AIRCRAFT DESIGN & RES INST

Whirlwind dusting machine

InactiveCN101584566AImprove handlingReduce the likelihood of fallingSuction filtersEngineeringWhirlwind
The invention provides a whirlwind dusting machine capable of easily demounting a tubular body to easily abandon dust. The tubular body (12) with a dust collection container (11) is installed with free dismounting relative to the dust collection container (11) and is provided with small holes (24), (25) playing the role of a primary filter and a secondary filter body (13) is installed at the downriver side of the tubular body with free dismounting and is provided with a baggy secondary filter (34) so that a dust collection member (4) is installed with free dismounting relative to the dusting machine body (2) internally provided with an electronic ventilating blower (5); moreover, a protuberance (27) in projecting manner extended to the side of the second filter (34) is installed at the central part of the tubular body (12), so the tubular body (12) can be held easily by grasping the protuberance (27) when the tubular body (12) is dismounted relative to the dust collection container (11); thereof, the possibility that the protuberance (27) drops off can be reduced.
Owner:TWINBIRD CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products