94results about How to "Increase the launch area" patented technology

The invention relates to a flat-panel display of a grid-controlled multiple-tilted cathode structure and the making process thereof, comprising: sealed vacuum cavity composed of anode glass panel, cathode glass panel, and peripheral glass frame; anode conducting layer on the anode glass panel and fluorescent powder layer prepared on the anode conducting layer; grid lead layer, carbon nanotube and grid-controlled multiple-tilted cathode structure on the cathode glass panel; supporting wall structure and degassing agent auxiliary component between the anode glass panel and cathode glass panel, and it can further raise electron emission efficiency of carbon nanotube cathode and number of emitted electrons, improve control function of grid, helps to improve display resolution and image quality, and has advantages of stable and reliable making course, simple making process, low making cost, and simple structure.

The invention relates to a flextensional transducer using a PVDF piezoelectric film. The flextensional transducer comprises a piezoelectric ceramic wafer stack and a PVDF film. The PVDF film surrounds the piezoelectric ceramic wafer stack. A connecting piece is arranged between the PVDF film and the piezoelectric ceramic wafer stack. The flextensional transducer further comprises a device for enabling the PVDF film to generate prestress. The metallic housing of a conventional flextensional transducer is replaced by the PVDF film. The PVDF film and the piezoelectric ceramic wafer stack are used as sensitive elements. The PVDF film uses a film flexural vibration mode under a simple boundary condition. The piezoelectric ceramic wafer stack uses a longitudinal vibration mode. A wide bandwidth can be acquired by mode coupling so as to achieve broadband transmission sound waves. The flextensional transducer has characteristics of low frequency, a wide band, high receiving sensitivity, large acoustic radiation power, and horizontal omnidirectional directivity.

A light emitting device and a method for fabricating the same are disclosed, whereby a thin mask film is changed to agglomerates by a simple thermal treatment process, and a plurality of nano openings, each opening spaced a distance apart, are formed in the agglomerates, a light emitting structure exposed to the nano openings is etched to form nano grooves and nano openings therein, enabling to enhance a light emitting area and to reduce the totally reflected light for an improvement of the light extraction efficiency.

The invention discloses a high-current multi-channel metal hollow cathode, which comprises a cathode tube, multiple metal emitters and an air circuit interface, wherein the cathode tube is a thin refractory metal tube, the multiple refractory metal emitters are arranged at one end of the cathode tube in parallel, the surfaces between the metal emitters and between the metal emitters and the inner wall of the cathode tube are tangent and the other end of the cathode tube is hermetically welded with the air circuit interface. According to the high-current multi-channel metal cathode, multiple emission channels are formed by adopting multiple metal bars or tubes with low work functions and high electron emission ability, the emission area is increased under the condition of a finite size, the emission current capacity is improved, an external heater is not needed, a certain flow of gas working medium is introduced to the inside, certain high voltage is applied to the outside and electron current of 100-500A can be emitted through direct ignition; and the emission current density of unit area does not exceed 10A / cm<2>, thereby greatly reducing the surface temperatures of the emitters and the material ablation rate and prolonging the service life of the hollow cathode and a thruster.

This invention relates to a panel display with an integrated vertical slot cathode structure and its process technology, in which, the display includes a sealed vacuum cavity composed of a cathode panel, an anode panel and surrounding glasses, a control grating for controlling electronic emission and grown carbon nm tube cathode, a photoetched anode conduction layer on the anode panel and a fluorescence powder layer on the conduction layer, a wall supporting structure and getters, in which, the emission area is enlarged since an integrated vertical slot cathode structure is processed on the cathode panel, the fine field emission property of the carbon nm tube prepared by a direct growing method is fully used and the control grating is highly integrated with the cathode structure to control the electronic emission to increase the emission efficiency.

The invention relates to a flat-panel display of a multi-column cathode emission structure and the making process thereof, comprising: sealed vacuum cavity composed of anode glass panel, cathode glass panel, and peripheral glass frame; anode conducting layer on the anode glass panel and fluorescent powder layer prepared on the anode conducting layer; grid lead layer, carbon nanotube and multi-column cathode emission structure on the cathode glass panel; supporting wall structure and degassing agent auxiliary component between the anode glass panel and cathode glass panel, and it can further reduce operating voltage of grid, raise electron emission efficiency of carbon nanotube cathode, and has advantages of stable and reliable making course, simple making process, low making cost, and simple structure.

The flat panel display includes cathode glass faceplate, anode glass faceplate, and sealed vacuum cavity surrounded by glass frame. There are cathode conductive layer, Nano carbon tubes, and arc type structure of grid electrode control array on the cathode glass faceplate. There are anode conductive layer and phosphor layers prepared on the conductive layer on anode glass faceplate. Structure of supporting wall and attached elements of getter are located between anode glass faceplate and cathode glass faceplate. The invention shortens gap between structure of grid electrode and structure of cathode of Nano carbon tubes further, reduces working voltage of grid electrode structure, and enhances control function of grid electrode so as to be in favor of raising display brightness of apparatus further. Advantages are: stable and reliable manufacturing procedure, simple technique and structure, and low cost.

The invention relates to a flat-panel display with side-elevation square grid-controlled inverted round table type cathode structure and a manufacturing process thereof, wherein the flat-panel display comprises a sealed vacuum chamber, a side-elevation square grid-controlled inverted round table type cathode structure, an isolated wall, a getter, an anode conducting layer, an anode lead layer, an anode isolated layer and a fluorescent powder layer, wherein the sealed vacuum chamber comprises a cathode panel, an anode panel and a glass frame; the side-elevation square grid-controlled inverted round table type cathode structure is arranged on the cathode panel; the isolated wall and the getter are positioned between the anode panel and the cathode panel; the anode conducting layer, the anode lead layer and the anode isolated layer are arranged on the anode panel, and the fluorescent powder layer is prepared on the upper surface of the anode conducting layer. The flat-panel display has the advantages of low cost, simple manufacturing process and stable and reliable manufacturing process.

The invention discloses a filament used for a microcurrent electronic gun. The filament is made of tungsten, the diameter of the middle of the filament gradually lessens, the diameter of two ends of the filament is 0.15mm-0.2mm, and the diameter of the thinnest position of the middle of the filament is 0.12mm-0.16mm. The filament used for the microcurrent electronic gun solves the problem that beam current size of the microcurrent electronic gun cannot be accurately controlled in the prior art, and enables electron emission quantity to be reduced of two order of magnitudes through decreasing of the superficial area of the filament. Through changing of the shape and structure of the filament, large temperature gradients of the middle portion and edges are formed, and thus an electron emission area is gradually enlarged along with the increase of voltage of a filament end. A tip protuberance shape can form the earliest punctiform trace emission which is quite easy to educe out by an accelerating field, and thus stable and nearly linear control from a few microamps to hundreds of microamps is achieved.

Present invention relates to flat-panel display having integrated double flat grate array architecture and making technology. It contains cathode panel, anode panel and around glass enclose constituent sealed vacuum cavity, anode conducting layer etched on anode panel, phosphor powder layer prepared anode conducting layer, cathode panel having integrated double flat grate array architecture and growing carbon nanotube cathode, knee wall structure and getter element. Said invention has fine field emission property and reduces integral device operating voltage with steady reliable manufacturing process, simple technology, cheaply cost, and simple structure etc advantages.

The flat panel display includes cathode glass faceplate, anode glass faceplate, and sealed vacuum cavity surrounded by glass frame. There are cathode conductive layer, Nano carbon tubes, and polyline grid control structure on the cathode glass faceplate. There are anode conductive layer and phosphor layers prepared on the conductive layer on anode glass faceplate. Structure of supporting wall and attached elements of getter are located between anode glass faceplate and cathode glass faceplate. The invention enhances control function of grid structure further, increases emission efficiency of cathode of Nano carbon tubes so as to be in favor of raising resolution and image quality of whole apparatus further. Advantages are: stable and reliable manufacturing procedure, simple technique and structure, and low cost.

The invention relates to the field of microwave, millimeter wave and terahertz frequency band electric vacuum devices, in particular to a multi-beam high-order mode beam wave interaction structure based on a cold cathode. The structure is used for solving the problem that a beam wave interaction structure in the prior art cannot effectively improve the output power and the output efficiency. The multi-beam high-order mold beam wave interaction structure comprises a high-frequency interaction structure, a cold cathode electron gun connected with one end of the high-frequency interaction structure in a sealed mode, and an output system connected with the other end of the high-frequency interaction structure in a sealed mode. The interior of the high-frequency interaction structure is vacuumand is divided into a plurality of interaction gaps by transverse metal partition plates and longitudinal metal partition plates. The interaction gaps are communicated through coupling gaps. Accordingto the invention, under the action of the metal partition plates, the generation of a basic mode is inhibited. The metal partition plates can run under a high-order mode, so that the interaction of multiple electron beams and the high-order mode is realized. The beam wave interaction area is increased, and the output power and the output efficiency are improved.

The invention discloses a gyrotron traveling wave tube low-speed scattered magnetic control injection electron gun and a design method, and belongs to the field of vacuum electronic devices. The electron gun comprises a cathode and an anode. The cathode comprises a cathode bottom table, a rear forming pole, an emission band and a front forming pole, the radius of the cathode bottom table is larger than that of the rear forming pole, the generatrix of the emission band is an arc curve, and the overall surface of the front forming pole is an arc surface; besides, in the design of the cathode, through two times of modeling and respective simulation optimization of partial parameters, the parameters in the one-time simulation optimization process are reduced, the optimization target is clearer, the design difficulty is effectively reduced, and the design time is shortened. The problem that the electric field of the gun area of the electron gun is too high due to the fact that the size of the cathode is too small is effectively solved, meanwhile, the adverse effect of the abrupt change structure of the cathode on the surface electric field of an emission band is avoided, and speed scattering of the electron gun is effectively reduced.

The invention provides a gold nanoparticle thin film wrapped by an organic ligand and a field electron emission device of the gold nanoparticle thin film. The gold nanoparticle thin film has a superlattice structure taking gold nanoparticles wrapped by the organic ligand and of 1.3-1.7nm in particle diameter as elements. Electrons are provided through the gold nanoparticles, electron emission is enhanced through the organic ligand with low electron affinity, and the gold nanoparticle thin film is taken as an electron emission source to emit electron beams which are uniform, high in strength and quasi-monochromatized under low voltage bias. The gold nanoparticle thin film has the advantages of large emission area, high emission strength, good monochromatic performance and the like; expensive vacuum equipment is not needed, so that a preparation method is economical, convenient and quick.

The invention relates to a plate display in annular blade cathode emission structure and relative production, wherein it comprises an anode glass panel, a cathode glass panel, and a sealing vacuum chamber surrounded by four glass frames; the anode glass panel is arranged with anode conductive layer and a fluorescent powder layer is above the conductive layer; a support wall structure and a gattering additional element are between the anode glass panel and the cathode glass panel; a control grid, a carbon nanometer tube cathode and annular blade cathode emission structure are arranged on the cathode glass panel. The invention can effectively utilize the phenomenon that the edge position emits lots of electrons, improve the electron emission efficiency of cathode, and improve the display brightness of device, with lower cost and simple structure.

The invention relates to a flat-panel display of an annular vertical- plane grid-controlled cathode structure and the making process thereof, comprising: sealed vacuum cavity composed of anode glass panel, cathode glass panel, and peripheral glass frame; anode conducting layer on the anode glass panel and fluorescent powder layer prepared on the anode conducting layer; supporting wall structure and degassing agent auxiliary component between the anode glass panel and cathode glass panel; and grid lead layer, carbon nanotube and annular vertical- plane grid-controlled cathode structure on the cathode glass panel; and it can further improve whole display brightness, resolution and image quality and has advantages of stable and reliable making course, simple making process, low making cost, and simple structure.

Present invention relates to flat-panel display having integrated fork shape field emitting cathode array architecture and making technology. It contains anode panel and concave cycle glass enclose constructed sealed vacuum cavity, anode panel having photo etched anode conducting layer and phosphor powder layer anode conducting layer, growing carbon nanotube cathode, knee wall structure and getter element, cathode panel having integrated fork shape field emitting cathode array architecture, shortening distance between signal grid and cathode and reducing whole device operating voltage, at the same time highly integrating control grid and carbon nanotube cathode, said grid having strong control action to carbon nanotube cathode electron emission. Said invention raises carbon nanotube cathode electron emission efficiency having reliable manufacturing process, simple technology, low cost, and simple structure etc advantages.

The invention relates to an ultrasonic wave treating device, which comprises ultrasonic wave detecting treating unit, moving unit and driving unit for driving the detecting treating unit, control unit and image display unit for controlling the detecting treating unit, wherein the detecting treating unit comprises chamber with ultrasonic wave energy converter and ultrasonic wave imager connected to the image display unit; the chamber can be open and closed; when it is open, the ultrasonic wave energy converter expands to two sides of chamber at two sides of ultrasonic wave imager. The invention can avoid image interference between imager and converter, without hurting rectum.

A light emitting device and a method for fabricating the same are disclosed, whereby a thin mask film is changed to agglomerates by a simple thermal treatment process, and a plurality of nano openings, each opening spaced a distance apart, are formed in the agglomerates, a light emitting structure exposed to the nano openings is etched to form nano grooves and nano openings therein, enabling to enhance a light emitting area and to reduce the totally reflected light for an improvement of the light extraction efficiency.

The invention relates to a flat-panel display of a suspended annular cathode structure and the making process thereof, comprising: sealed vacuum cavity composed of anode glass panel, cathode glass panel, and peripheral glass frame; anode conducting layer on the anode glass panel and fluorescent powder layer prepared on the anode conducting layer; cathode conducting layer, carbon nanotube and suspended annular cathode structure on the cathode glass panel; supporting wall structure and degassing agent auxiliary component between the anode glass panel and cathode glass panel, and it can further raise electron emission efficiency of carbon nanotube cathode and number of emitted electrons, reduce operating voltage of grid, improve control function of grid structure, helps to improve display brightness, and has advantages of stable and reliable making course, simple making process, low making cost, and simple structure.

The invention particularly relates to a flat plate display of a suspension square cathode type high angle grid control structure and a manufacturing process thereof. The flat plate display comprises the following components: a sealed vacuum chamber consisting of a cathode glass panel, an anode glass panel and a glass frame; an anode drainage layer, an anode connection layer and an anode covering layer which are arranged on the anode glass panel, and a luminescent layer which is prepared on the anode drainage layer; and an isolator and a getter which are positioned between the anode glass panel and the cathode glass panel. The suspension square cathode type high angle grid control structure comprises a cathode glass panel, a cathode barrier layer, a cathode bottom layer, a cathode connection layer polar enhancement layer, a cathode translation layer, a cathode transition layer, a cathode sacrificial layer, a first blocking layer, a first grid drainage layer, a grid connection layer, a second blocking layer, a second grid drainage layer, a third blocking layer and a carbon nanotube. The flat plate display has the advantages of low cost, simple manufacturing process and stable and reliable manufacturing course.

The invention relates to a flextensional transducer using a PVDF piezoelectric film. The flextensional transducer comprises a piezoelectric ceramic wafer stack and a PVDF film. The PVDF film surrounds the piezoelectric ceramic wafer stack. A connecting piece is arranged between the PVDF film and the piezoelectric ceramic wafer stack. The flextensional transducer further comprises a device for enabling the PVDF film to generate prestress. The metallic housing of a conventional flextensional transducer is replaced by the PVDF film. The PVDF film and the piezoelectric ceramic wafer stack are used as sensitive elements. The PVDF film uses a film flexural vibration mode under a simple boundary condition. The piezoelectric ceramic wafer stack uses a longitudinal vibration mode. A wide bandwidth can be acquired by mode coupling so as to achieve broadband transmission sound waves. The flextensional transducer has characteristics of low frequency, a wide band, high receiving sensitivity, large acoustic radiation power, and horizontal omnidirectional directivity.

The flat panel display includes cathode glass faceplate, anode glass faceplate, and sealed vacuum cavity surrounded by glass frame. There are cathode conductive layer, Nano carbon tubes, and inner concave formed structures of grid control array on the cathode glass faceplate. There are anode conductive layer and phosphor layers prepared on the conductive layer on anode glass faceplate. Structure of supporting wall and attached elements of getter are located between anode glass faceplate and cathode glass faceplate. The invention reduces working voltage of grid electrode further, enhances control function and control efficiency of grid electrode so as to be in favor of raising brightness and image quality displayed by the whole apparatus. Advantages are: stable and reliable manufacturing procedure, simple technique and structure, and low cost.

The invention discloses a jigsaw firework substrate. The jigsaw firework substrate comprises a bottom plate, inserting slots are formed in the upper surface of the bottom plate, mounting parts are arranged in the inserting slots, an indicator light display board is fixed to the upper part of the bottom plate, electric connecting openings are formed in the bottom plate, and the electric connectingopenings are electrically connected with a firework ignition controller; the indicator light display board is provided with hollow parts and indicator lights, the hollow parts are located over the inserting slots, external circuit holes are formed in the indicator light display board, and the external circuit holes are electrically connected with a circuit controller.

The invention belongs to the technical fields of electric propulsion systems and ion accelerators of aerospace devices, in particular to a method for generating a transition metal positive ion beam and a device for the method; the method comprises the following steps that a leading-out voltage is applied to an interface between a working substance storage layer and a solid electrolyte membrane, wherein metal is converted into metal ions through a redox reaction; and then the metal ions enter the vacuum through field evaporation, and kinetic energy is obtained under the action of an acceleration voltage to form an ion beam. The device is mainly composed of the working substance storage layer, the solid electrolyte membrane, a heating system and a high-voltage power supply system. A needle point is arranged on the surface of the working substance storage layer, and the surface of the needle point is plated with the solid electrolyte membrane; and a leading-out electrode is a metal net which is made of the same material as the working substance storage layer. The method has the beneficial effects that the ion emission area is enlarged, the beam intensity is improved, the leading-out voltage is lowered, and independent adjustment of the ion beam current intensity and the energy can be realized through two sets of independent power sources.

The invention relates to the field of microwave, millimeter wave and terahertz frequency band electric vacuum devices, specifically a multi-injection high-order mold injection-wave interaction structure based on cold cathodes, which is used to solve the problem that the injection-wave interaction structure in the prior art cannot effectively improve the output A question of power and efficiency. The invention includes a high-frequency interaction structure, a cold cathode electron gun sealedly connected to one end of the high-frequency interaction structure, and an output system sealed to the other end of the high-frequency interaction structure. It is divided into a plurality of interaction gaps with the longitudinal metal partition, and the interaction gaps are connected to each other through coupling joints; the present invention uses the function of the metal partition to suppress the generation of the basic mode and work under the high-order mode. The interaction between multiple electron beams and high-order modes is realized, the beam-wave interaction area is enlarged, and the output power and efficiency are improved.

The flat panel display includes cathode glass faceplate, anode glass faceplate, and sealed vacuum cavity surrounded by glass frame. There are cathode conductive layer, Nano carbon tubes, and structures of hollow bottom grid array on cathode glass faceplate. There are anode conductive layer and phosphor layers prepared on the conductive layer on anode glass faceplate. Structure of supporting wall and attached elements of getter are located between anode glass faceplate and cathode glass faceplate. The invention reduces trapping electron beam by grid structure, increases brightness of the display, and enhances area and quantity of electron emission of Nano carbon tube cathodes. Advantages are: stable and reliable manufacturing procedure, simple technique and structure, and low cost.

The invention discloses a particle-conductive air negative ion generator. The generator comprises a main body, the upper portion of the main body is covered by a main body upper cover, a power line is arranged on one side of the main body, fixing cylinders are connected with the two sides of the main body upper cover in a penetrating mode, conversion devices are fixedly connected with the positions, corresponding to the fixing cylinders, of the bottom surface of the main body, the conversion devices are fixedly connected to negative ion output lines, and the negative ion output lines penetrate the fixing cylinders and magnetic conductors in sequence and extend into releaser emission assemblies, wherein each releaser emission assembly comprises a releaser dustproof rear cover and a releaser dustproof front cover. According to the particle-conductive air negative ion generator, a releaser dispersion plate is adopted, not only are installation and replacing more convenient, but also bilateral multipoint releasing heads are added, so that the transmitting area is expanded; anti-static-residue devices are arranged, so that the safety is improved; meanwhile, by means of a permeability design adopted by the releaser assemblies, discharging and transmission of negative ions are more promoted, and the limitation of the traditional closed ventilation single-channel performance is broken.

The invention relates to an ultrasonic wave treating device, which comprises ultrasonic wave detecting treating unit, moving unit and driving unit for driving the detecting treating unit, control unitand image display unit for controlling the detecting treating unit, wherein the detecting treating unit comprises chamber with ultrasonic wave energy converter and ultrasonic wave imager connected tothe image display unit; the chamber can be open and closed; when it is open, the ultrasonic wave energy converter expands to two sides of chamber at two sides of ultrasonic wave imager. The inventioncan avoid image interference between imager and converter, without hurting rectum.