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33results about How to "Increase the occupied area" patented technology
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Radio frequency protector
ActiveCN103401516AIncrease the occupied areaEasy to controlHigh frequency amplifiersPower amplifiersRadio frequencyAutomatic gain control
The invention discloses a radio frequency protector used for miniaturizing radio frequency power amplifiers. The radio frequency protector comprises a radio frequency input protection unit, an ALC (automatic level control) unit, a temperature compensation unit, an AGC (automatic gain control) unit and a signal selection circuit unit, wherein the radio frequency input protection unit, the ALC unit, the temperature compensation unit, the AGC unit and the signal selection circuit unit are integrally designed and electrically connected with a same radio frequency attenuator circuit unit. The signal selection circuit unit is used for turning input protection control voltage and comparing the voltage respectively to AGC control voltage and ALC control voltage, the low-level voltage is used as output control voltage for controlling the radio frequency attenuator unit.
Owner:COMBA TELECOM SYST CHINA LTD
Organic electroluminescent display panel, manufacturing method and display device thereof
PendingCN109192751AEnough wiring spaceSave wiring spaceStatic indicating devicesSolid-state devicesOrganic electroluminescenceDriving circuit
An organic electroluminescent display panel, a manufacturing method and display device thereof are disclosed. A gate drive circuit and a pixel driving circuit are simultaneously arranged in a displayarea of a substrate base plate, and that regions where the gate driving circuit and the pixel drive circuit are located are not overlapped with each other. A plurality of top emission type light emitting units covering a pixel driving circuit and a gate driving circuit are provided in a display region of a substrate, That is to say, the occupied area of each top-emitting light-emitting unit is increased, from the existing top-emitting light-emitting unit overlapping only one pixel driving circuit to an overlapping area between the gate driving circuit and the top-emitting light-emitting unit in the display area, so as to ensure that all the circuits in the display area are covered by the top-emitting light-emitting unit. This can ensure that the gate driving circuit and pixel driving circuit have enough wiring space in the display region, save the wiring space of the gate driving circuit at the border, and realize the ultra-narrow border or even border-free design.
Owner:BOE TECH GRP CO LTD +1
Multilayer display device and washing machine employing same
ActiveCN105803728ASave spaceIncrease the occupied areaOther washing machinesControl devices for washing apparatusOlder peopleRefractive index
The invention relates to the field of washing machine display equipment, and specifically relates to a multilayer display device and a washing machine employing the same. The multilayer display device comprises a controller, a light source, a liquid crystal layer and a display unit, and the light source, the liquid crystal layer and the display unit are sequentially arranged. The display unit comprises at least two sub display layers which have different refractive indexes and are mutually superposed, each sub display layer can reflect or be penetrated by light rays in a specific wavelength scope, the sub display layers display different control interfaces, and the controller controls the different control interfaces to be displayed on the different sub display layers. By employing the multilayer display device, space can be effectively saved, characters on the control interfaces are relatively amplified, and old people can use the multilayer display device conveniently; different sub display layers are different in color, and each control interface can be distinguished visually and easily.
Owner:QINGDAO HAIER WASHING MASCH CO LTD +1
Energy-saving environment-friendly single-tube vertical carbonization furnace
ActiveCN108587659AReduce the impactSave energyOven incrustations prevention/removalSpecial form destructive distillationCarbonizationHeating furnace
The invention belongs to the technical field of carbonization furnaces, and provides an energy-saving environment-friendly single-tube vertical carbonization furnace which comprises a carbonization pipeline. A preheating furnace body, a heating furnace body and a cooling furnace body are sequentially arranged on the outer side of the carbonization pipeline from top to bottom, a storage crucible isslidably arranged in the carbonization pipeline, the preheating furnace body and the heating furnace body are made of heat insulating materials, an electric heating device is arranged in the heatingfurnace body, an annular cavity is formed in the cooling furnace body, and a water outlet and a water inlet are formed in the bottom and the top of the annular cavity. By the aid of the technical scheme, the furnace solves the problem that carbonization furnaces are of horizontal structures, large in occupied area and low in working efficiency in the prior art.
Owner:河北坤天新能源股份有限公司
Method of operating near field communication (NFC) device and NFC device
ActiveUS20170026088A1Improve communication performanceIncrease the occupied areaNear-field in RFIDRecord carriers used with machinesEngineeringRadio frequency
A method of operating a near field communication (NFC) device includes receiving, by the NFC device, a first signal from an NFC reader, transmitting, by the NFC device, a response to the first signal to the NFC reader and changing selectively, by the NFC device, a radio frequency (RF) configuration parameter associated with signal transmission operation during a signal transmission interval, based on determining whether the NFC reader recognizes the response.
Owner:SAMSUNG ELECTRONICS CO LTD
Display panel, control method for display panel, and display apparatus
ActiveCN107704145AIncrease power consumptionIncrease the occupied areaPrint image acquisitionInput/output processes for data processingFingerprintIntegrated circuit
The invention discloses a display panel, a control method for the display panel, and a display apparatus. The display panel has a first region and a second region, and comprises multiple first touch electrodes arranged in the first region, multiple second touch electrodes arranged in the second region, an integrated circuit electrically connected with the first touch electrodes and the second touch electrodes, and multiple switch conversion circuit; each switch conversion circuit comprises a common connection end connected with the integrated circuit, a first switch branch with a first end connected with each first touch electrode and a second end connected with the common connection end, and a second switch branch with a first end connected with each second touch electrode and a second end connected with the common connection end; in a first time cycle, the first switch branches are switched on and the second switch branches are switched off; and in a second time cycle, the first switch branches are switched off and the second switch branches are switched on. Through the display panel, fingerprint identification can be realized on the display panel on the premise of not adding a chip pin in the integrated circuit.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD
Platycodon grandiflorum planting method
InactiveCN106105598APromote reproductive growthPromote vegetative growthSuperphosphatesExcrement fertilisersSaccharumSucrose
The invention discloses a platycodon grandiflorum planting method. The method comprises the following steps: (1) carrying out seedling raising: selecting biennial platycodon grandiflorum rhizomes, and carrying out seedling raising culture at the temperature of 21 DEG C to 23 DEG C, wherein soil for seedling raising is prepared from the following ingredients in parts by weight: 500 parts of nutritional soil, 800 parts of decomposed cattle manure, 500 parts of peat soil, 30 parts of saccharose and 50 parts of naphthyl acetic acid; (2) carrying out transplanting; and (3) carrying out fertilizer application: when the plant height reaches 30cm to 35cm, spraying a foliar fertilizer, wherein the foliar fertilizer is prepared from the following ingredients: 20 parts of anhydrous ethanol, 50 parts of naphthyl acetic acid, 20 parts of saccharose, 50 parts of aloe vera and 500 parts of water; and carrying out topdressing in July to September, wherein the fertilizer used in the topdressing process is prepared from the following ingredients in parts by weight: 170 parts of urea, 300 parts of calcium superphosphate, 20 parts of zinc sulfate, 10 parts of boric acid and 20 parts of radix polygalae. According to the platycodon grandiflorum planting method, the differentiation and development of roots of platycodon grandiflorum can be promoted, the development of woody parts is promoted, and the yield and quality of the platycodon grandiflorum are improved.
Owner:漳州红点商务咨询有限公司
Multi-step continuous resin transfer molding method of rail vehicle composite material member
Provided is a multi-step continuous resin transfer molding method of rail vehicle composite material member, wherein the multi-step continuous resin transfer molding method of rail vehicle composite material member consists of an upper die, a lower die, a die assembly locking mechanism, two groups of movable electric heating tube arrays, a plurality of resin injection tube joints, a plurality of vacuumizing joints, and a molding parameter control system. The upper die, the lower die and the die assembly locking mechanism concurrently form a forming die of the multi-step continuous RTM forming; the two groups of movable electric heating tube arrays are mounted on a platform of a movable trolley; and the two groups of movable electric heating tube arrays are placed below the lower die for heating the lower die and solidifying the resin which is injected inside a cavity of the forming die; the moving speed of the movable trolley and the height of the platform are both set by the molding parameter control system.
Owner:吉林大学重庆研究院
Application of populus trichocarpa PtrbHLH186 gene in regulation and control of secondary xylem development of trees
ActiveCN114195873AGrowth retardationIncrease the occupied areaPlant peptidesFermentationBiotechnologyPopulus trichocarpa
The invention relates to application of a populus trichocarpa PtrbHLH186 gene in regulation and control of secondary xylem development of trees, and belongs to the technical field of gene engineering. In order to solve the problems that the need for wood quantity and quality is increased day by day and the biological function of the PtrbHLH186 transcription factor is unknown, a PtrbHLH186 overexpressed populus trichocarpa transgenic plant is obtained through an agrobacterium-mediated populus trichocarpa genetic transformation system, and then a series of technical means are utilized for analysis and discovery that the PtrbHLH186 overexpressed populus trichocarpa transgenic plant is found to have the advantages that the PtrbHLH186 overexpressed populus trichocarpa transgenic plant; the overexpression of the PtrbHLH186 transcription factor affects the growth and development of plants and the formation of wood, which is mainly embodied in that the lignin synthase gene is regulated by the gene to affect the deposition of lignin in the secondary cell wall of a tree, so that the morphological structure and distribution of xylem cells are changed; the results show that the PtrbHLH186 transcription factor has a certain regulation effect on the development of the secondary xylem of the tree. The research content provided by the invention has important theoretical guiding significance for cultivating new varieties of high-quality woods and forests.
Owner:NORTHEAST FORESTRY UNIVERSITY
Aviation safety system
InactiveCN102020018AEasy to modifyIncrease the occupied areaParachutesAtmospheric pressureRe engineering
The invention discloses an aviation safety system which is more convenient for the traditional airplane to modify and install and has higher safety. The aviation safety system comprises two side umbrella assemblies and a main umbrella assembly, wherein the two side umbrella assemblies are embedded at the airplane head part and the airplane tail part and comprise side umbrella atmospheric pressurebounce devices with arc bodies; the main umbrella assembly is embedded in the middle and comprises a main umbrella atmospheric pressure bounce device with a rectangle; the umbrella width summation ofa main umbrella crown and side umbrella crowns in the direction of the airplane body is not lower than 2.5 times the length of the airplane body; and after the safety device is opened, the main umbrella crown is higher than the side umbrella crown. With the scheme, the aviation safety system is free from dissecting and redesigning the traditional airplane and is convenient to reform the traditional airplane; with three umbrellas, the enough load bearing force can be ensured and the stress tends to be balanced by using the front-middle-rear layout; by using the high-low layer design of the umbrella height, the space is occupied more reasonably; the speed of opening the umbrella crowns by adopting compressed air can be improved and the safety guarantee can be realized in time.
Owner:朱步成
Polishing device
The invention discloses a polishing device, which comprises an outer barrel, an inner barrel, a plurality of polishing mechanisms and an actuator, wherein the outer barrel is provided with a plurality of prism-shaped cavities formed by connecting a plurality of inner side faces in sequence; each inner side face is provided with at least one fixing groove for fixing a workpiece to be polished; the inner barrel is accommodated in the cavity and comprises at least one polishing surface; the at least one polishing surface is provided with a plurality of bearing grooves; each polishing mechanism comprises a polishing motor accommodated in the bearing groove, a polishing sheet which is connected to the polishing motor and can rotate under the driving action of the polishing motor, and an elastic sheet for connecting the polishing motor to the bottom of the bearing groove; and the actuator is connected with the outer barrel to drive the outer barrel to rotate around the middle axis of the outer barrel and move along the middle axis in a reciprocating way. In the polishing device, a plurality of workpieces to be polished can be fixed on a plurality of inner side faces encircled into the prism-shaped cavity simultaneously, the space resource is utilized, and the plant area occupied by the polishing device is reduced.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Multi-epitaxial super-junction terminal structure and manufacturing method thereof
PendingCN109509784ACompletely exhaustedImprove total pressure efficiencySemiconductor devicesManufacturing technologySemiconductor
The invention belongs to the technical field of manufacturing semiconductor devices, and relates to a multi-epitaxial super-junction terminal structure. The multi-epitaxial super-junction terminal structure comprises a first conductive type epitaxial layer. In a terminal region, a plurality of regularly arranged circular second conductive type circular regions are arranged in the first conductivetype epitaxial layer, and adjacent second conductive type circular regions may be adjacent or separated, and a first conductive type region is disposed in an adjacent second conductive type circular interval; and a plurality of second conductive type well regions are disposed on the surface, of the terminal region, close to an active region. By setting the second conductive type circular (or elliptical) regions in the epitaxial layer of the terminal region, configuring the second conductive type circular regions to be adjacent or separated and setting a plurality of second conductive type circular regions for preventing breakdown on the surface close to the active region, the multi-epitaxial super-junction terminal structure enables the device to have higher withstand voltage efficiency inlateral withstand voltage and more complete depletion, thereby reducing the terminal area, reducing the overall chip area, reducing the production cost, and improving the cost performance of the chip.
Owner:WUXI NCE POWER
Electric fuse burning operation method and burning device
The invention provides an electric fuse burning operation method and a burning device. The method comprises the following steps of: shifting programming data in CLK (clock) low potential; judging whether a current electric fuse is needed to be burned or not to write the programming data; if so, performing the burning operation on the electric fuse in CLK high potential; verifying whether the electric fuse subjected to the burning operation is needed to be re-burned or not; and if so, performing the burning operation again on the electric fuse. The electric fuse burning operation method and the burning device can avoid spending more time on the electric fuse burning operation so as to improve programming efficiency.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP
Miniaturized near-field communication antenna and mobile terminal
PendingCN110416715AReduce the amount of magnetic flux offsetHigh strengthLoop antennas with ferromagnetic coreAntenna supports/mountingsWire cuttingMiniaturization
The invention discloses a miniaturized near field communication antenna and a mobile terminal. The antenna comprises a planar coil embedded in a substrate, and the planar coil comprises a first part wire and a second part wire which are oppositely arranged, wherein the diameter of the first part wire is greater than the diameter of the second wire part. A magnetic piece and a magnetic induction line cutting piece are arranged on the two side faces of the base plate respectively, and the magnetic piece covers the area where a thick wire is located and is used for compressing useful magnetic induction lines close to the magnetic piece into the magnetic piece so as to compress useful magnetic field space to enable a magnetic field to be located on one side of the magnetic piece. The magneticinduction wire cutting piece covers the area where a thin wire is located, and is used for cutting magnetic induction lines generated by the thin wire and destroying a useless magnetic field, therebyavoiding the phenomenon that magnetic induction lines which are relatively close and opposite in direction cancel each other, improving the emission energy of the miniaturized near-field antenna during card reading and writing and card simulation, improving the overall performance of the antenna, and further achieving the miniaturization of the near-field antenna so as to be suitable for small electronic equipment.
Owner:HOLYPAO
Display panel manufacturing method and display panel
The invention provides a display panel manufacturing method, which comprises the steps of: step S1, attaching a layer of isolating film to the periphery of an operable region of one of a color opticalfilter substrate and an array substrate; step S2, coating a polyimide layer on the surface of the color optical filter substrate and prebaking the surface; S3, peeling off the isolating film; step S4, and performing main baking on the color optical filter substrate, and then performing a liquid crystal injection process. The display panel manufacturing method improves the edge flatness of the polyimide film, shrinks a patterned extension area of the polyimide film, further shrinks an extension region of a frame glue, optimizes the existing frame design, and increases the display scale.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Platycodon grandiflorum planting method
InactiveCN107173011ALow costImprove germination rateSuperphosphatesSeed and root treatmentWarm waterAqueous solution
A platycodon grandiflorum planting method comprises the steps of seedling raising, transplantation, fertilizer application and management. According to the platycodon grandiflorum planting method, the platycodon grandiflorum seed emergence rate is higher and the survival rate is higher through seed soaking of a plant ash water solution, warm water sprinkling treatment before seed coating and then by combining with artificial management. In addition, the planting method is simple, raw materials are low in cost, and the planting method is suitable for industrial large-scale popularization and planting.
Owner:合肥市风达农业有限责任公司
Array substrate, manufacturing method of array substrate and liquid crystal display device
ActiveCN102629046BIncrease opening ratioIncrease the occupied areaSolid-state devicesSemiconductor/solid-state device manufacturingLiquid-crystal displayDielectric layer
The invention discloses an array substrate, a manufacturing method of the array substrate and a liquid crystal display device, relates to the technical field of liquid crystal display and is invented for improving the pixel aperture ratio. The array substrate comprises a substrate; grid lines are arranged on the substrate; data lines are arranged vertically to the grid lines; pixel regions are defined between the grid lines and the data lines; thin film transistors and pixel electrodes are arranged in the pixel regions; grid electrodes of the thin film transistors are connected with the grid lines; source electrodes of the thin film transistors are connected with the data lines; drain electrodes of the thin film transistors are connected with the pixel electrodes; and a resin dielectric layer is arranged between the layer on which the pixel electrodes are positioned and the layer on which the data lines are positioned. The array substrate and the liquid crystal display device can be used for carrying out liquid crystal display.
Owner:BEIJING BOE OPTOELECTRONCIS TECH CO LTD
A beam lifting machine with high stability
ActiveCN110562858BIncreasing the thicknessImprove weight capacityBase supporting structuresBraking devices for hoisting equipmentsClassical mechanicsStructural engineering
Owner:HENAN TIESHAN ELEVATORING EQUIP CO LTD
two stroke engine
ActiveCN105020000BIncrease the occupied areaHigh outputInternal combustion piston enginesEngineeringRisk stroke
Owner:HUSQVARNA AB
Multi-step continuous resin transfer molding method for rail vehicle composite components
Provided is a multi-step continuous resin transfer molding method of rail vehicle composite material member, wherein the multi-step continuous resin transfer molding method of rail vehicle composite material member consists of an upper die, a lower die, a die assembly locking mechanism, two groups of movable electric heating tube arrays, a plurality of resin injection tube joints, a plurality of vacuumizing joints, and a molding parameter control system. The upper die, the lower die and the die assembly locking mechanism concurrently form a forming die of the multi-step continuous RTM forming; the two groups of movable electric heating tube arrays are mounted on a platform of a movable trolley; and the two groups of movable electric heating tube arrays are placed below the lower die for heating the lower die and solidifying the resin which is injected inside a cavity of the forming die; the moving speed of the movable trolley and the height of the platform are both set by the molding parameter control system.
Owner:吉林大学重庆研究院
Shift register unit, driving method thereof, gate driving circuit and display device
ActiveCN104867439BReduce in quantityImprove anti-ESD (electrostatic discharge) abilityStatic indicating devicesDigital storageShift registerDisplay device
The invention relates to a shift register unit, a driving method thereof, a gate driving circuit and a display device. The shift register unit includes: a driving signal generating module, the driving signal generating module is used to generate a driving signal for driving the gate lines to be turned on, and the duration of the driving signal is equal to the time required for scanning n rows of gate lines; Said n≥2; a selection module, the selection module is connected to the input end of n rows of gate lines, and is used to sequentially gate the drive signal generation module with n rows of gate lines, and sequentially input the generated drive signals The n rows of gate lines. The above-mentioned shift register unit can reduce the area occupied by the gate drive circuit, thereby helping to realize narrow borders, increase the area of the effective display area of the display device, and increase the screen ratio of the display device; at the same time, it can also provide protection circuits. The arrangement provides enough space, which can improve the anti-ESD ability of the circuit.
Owner:HEFEI BOE OPTOELECTRONICS TECH +1
Electric fuse burning operation method and burning device
The invention provides an electric fuse burning operation method and a burning device. The method comprises the following steps of: shifting programming data in CLK (clock) low potential; judging whether a current electric fuse is needed to be burned or not to write the programming data; if so, performing the burning operation on the electric fuse in CLK high potential; verifying whether the electric fuse subjected to the burning operation is needed to be re-burned or not; and if so, performing the burning operation again on the electric fuse. The electric fuse burning operation method and the burning device can avoid spending more time on the electric fuse burning operation so as to improve programming efficiency.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP
An energy-saving and environment-friendly single-tube vertical carbonization furnace
ActiveCN108587659BTemperature equilibration and stabilizationLoss minimizationOven incrustations prevention/removalSpecial form destructive distillationCrucibleCarbonization
The invention belongs to the technical field of carbonization furnaces, and provides an energy-saving environment-friendly single-tube vertical carbonization furnace which comprises a carbonization pipeline. A preheating furnace body, a heating furnace body and a cooling furnace body are sequentially arranged on the outer side of the carbonization pipeline from top to bottom, a storage crucible isslidably arranged in the carbonization pipeline, the preheating furnace body and the heating furnace body are made of heat insulating materials, an electric heating device is arranged in the heatingfurnace body, an annular cavity is formed in the cooling furnace body, and a water outlet and a water inlet are formed in the bottom and the top of the annular cavity. By the aid of the technical scheme, the furnace solves the problem that carbonization furnaces are of horizontal structures, large in occupied area and low in working efficiency in the prior art.
Owner:河北坤天新能源股份有限公司
A radio frequency protection device
ActiveCN103401516BIncrease the occupied areaEasy to controlHigh frequency amplifiersPower amplifiersRadio frequencyAutomatic gain control
The invention discloses a radio frequency protector used for miniaturizing radio frequency power amplifiers. The radio frequency protector comprises a radio frequency input protection unit, an ALC (automatic level control) unit, a temperature compensation unit, an AGC (automatic gain control) unit and a signal selection circuit unit, wherein the radio frequency input protection unit, the ALC unit, the temperature compensation unit, the AGC unit and the signal selection circuit unit are integrally designed and electrically connected with a same radio frequency attenuator circuit unit. The signal selection circuit unit is used for turning input protection control voltage and comparing the voltage respectively to AGC control voltage and ALC control voltage, the low-level voltage is used as output control voltage for controlling the radio frequency attenuator unit.
Owner:COMBA TELECOM SYST CHINA LTD
Device for augmented reality display and system comprising used for realizing augmented reality display
PendingCN112817149AAchieve balanceIncrease the occupied areaOptical elementsEngineeringAugment reality
The invention relates to an image display technology, in particular to a device for augmented reality display and a system comprising the device and used for realizing augmented reality display. The device for augmented reality display includes: an optical waveguide lens; a first optical function structure, a second optical function structure, a third optical function structure and a fourth optical function structure which are arranged on the surface of the optical waveguide lens, wherein the second optical function structure and the third optical function structure are located between the first optical function structure and the fourth optical function structure. Light comprising a first electric field component and a second electric field component is coupled into the optical waveguide lens through the first optical function structure, and under the action of the first optical function structure, the first electric field component and the second electric field component of the light are in a first direction and a second direction in the optical waveguide lens respectively. Under the action of the first optical function structure, the light reaches the second optical function structure and the third optical function structure through total reflection, and under the action of the second optical function structure and the third optical function structure, the light reaches the fourth optical function structure through total reflection and is emitted from the fourth optical function structure.
Owner:SVG TECH GRP CO LTD
Mobile terminal browser, browser page display method and device
ActiveCN103177021BEasy to clickImprove experienceSpecial data processing applicationsDisplay deviceWeb page
Owner:TENCENT TECH (SHENZHEN) CO LTD
Polishing device
The invention discloses a polishing device, which comprises an outer barrel, an inner barrel, a plurality of polishing mechanisms and an actuator, wherein the outer barrel is provided with a plurality of prism-shaped cavities formed by connecting a plurality of inner side faces in sequence; each inner side face is provided with at least one fixing groove for fixing a workpiece to be polished; the inner barrel is accommodated in the cavity and comprises at least one polishing surface; the at least one polishing surface is provided with a plurality of bearing grooves; each polishing mechanism comprises a polishing motor accommodated in the bearing groove, a polishing sheet which is connected to the polishing motor and can rotate under the driving action of the polishing motor, and an elastic sheet for connecting the polishing motor to the bottom of the bearing groove; and the actuator is connected with the outer barrel to drive the outer barrel to rotate around the middle axis of the outer barrel and move along the middle axis in a reciprocating way. In the polishing device, a plurality of workpieces to be polished can be fixed on a plurality of inner side faces encircled into the prism-shaped cavity simultaneously, the space resource is utilized, and the plant area occupied by the polishing device is reduced.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Application of ptrbhlh186 gene in Populus trichocarpa in regulating secondary xylem development in trees
ActiveCN114195873BGrowth retardationIncrease the occupied areaPlant peptidesFermentationBiotechnologyPopulus trichocarpa
The application of PtrbHLH186 gene of Populus trichocarpa in regulating the development of secondary xylem of trees belongs to the technical field of genetic engineering. In order to solve the problem that the demand for wood quantity and quality is increasing day by day and the biological function of the PtrbHLH186 transcription factor of P. trichocarpa is unknown, the present invention obtains PtrbHLH186 over-expressing PtrbHLH186 transgenic plants through the Agrobacterium-mediated PtrbHLH186 genetic transformation system. Using a series of technical means, it was found that the overexpression of the PtrbHLH186 transcription factor affects the growth and development of plants and the formation of wood, which is mainly reflected in that the gene affects the deposition of lignin in the secondary cell wall of trees through the regulation of lignin synthase genes. Furthermore, the morphological structure and distribution of xylem cells were changed. The above results indicated that the PtrbHLH186 transcription factor had a certain regulatory effect on the development of secondary xylem in trees. The research content of the present invention has important theoretical guiding significance for cultivating new varieties of high-quality timber trees.
Owner:NORTHEAST FORESTRY UNIVERSITY
Aviation safety system
InactiveCN102020018BEasy to modifyIncrease the occupied areaParachutesAtmospheric pressureRe engineering
Owner:朱步成
Semiconductor device having protection circuit
InactiveCN1099712CImproved protection against damage from excessive voltageIncrease the occupied areaTransistorSemiconductor/solid-state device detailsBand shapeEngineering
Protection circuits for preventing an internal circuit on a semiconductor substrate from destroying due to an excess voltage are formed on the output end and input end of an internal circuit. The protection circuit on the input end has a gate electrode comprised of a band-like conductive film. This gate electrode is grounded and has a shape zigzagging in a waveform with crests and troughs alternately appearing in a planar view. A drain diffusion layer connected to an output end of the internal circuit is formed in one of two diffusion regions of the surface of the semiconductor substrate that are defined by the gate electrode, and a source diffusion layer grounded is formed in the other region. The source diffusion layer and the drain diffusion layer are formed integral with each other, so that the protection circuit on the input end is substantially constituted of one buffer transistor.
Owner:RENESAS ELECTRONICS CORP
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