136 results about "Polymer dielectric" patented technology

The present invention adds one or more thick layers of polymer dielectric and one or more layers of thick, wide metal lines on top of a finished semiconductor wafer, post-passivation. The thick, wide metal lines may be used for long signal paths and can also be used for power buses or power planes, clock distribution networks, critical signal, and re-distribution of I/O pads.

The present invention adds one or more thick layers of polymer dielectric and one or more layers of thick, wide metal lines on top of a finished semiconductor wafer, post-passivation. The thick, wide metal lines may be used for long signal paths and can also be used for power buses or power planes, clock distribution networks, critical signal, and re-distribution of I/O pads.

An integrated circuit includes isolation capacitors which include a silicon dioxide dielectric layer and a polymer dielectric layer over the layer of silicon dioxide. The silicon dioxide dielectric layer and the polymer dielectric layer extend across the integrated circuit. Top plates of the isolation capacitors have bond pads for wire bonds or bump bonds. Bottom plates of the isolation capacitors are connected to components of the integrated circuit. Other bond pads are connected to components in the integrated circuit through vias through the silicon dioxide dielectric layer and the polymer dielectric layer.

A grating coupled surface plasmon resonance optical modulator is disclosed. A electro-optic polymer dielectric is deposited on the metallic surface of a diffraction grating to provide a metal/dielectric interface. A surface plasmon will propagate at the metal/dielectric interface in a resonant condition, e.g., when the metal surface is illuminated by transverse magnetic (TM) polarized light of the appropriate wavelength, angle of incidence and phase velocity. In the present invention, phase velocity is controlled by the diffraction grating. A transparent electrode deposited on the electro-optic layer allows an electrical potential to be applied across the electro-optic polymer. The applied electrical potential (voltage) changes the index of refraction of the electro-optic polymer, thereby disrupting the resonant condition to produce an optically detectable change in reflectance of incident light from the metal layer. The disclosed grating coupled surface plasmon resonance optical modulator may be configured as an electronically or optically addressable array.

The invention discloses a polymer dielectric medium with low dielectric constant and low loss and a preparation method of the polymer dielectric medium. The polymer dielectric medium comprises the following raw materials: 50-60% of epoxy resin system, and 40-50% of mixed boron nitride nanoparticles, wherein the mixed boron nitride nanoparticle is a mixture of a boron nitride nanotube and a boron nitride nanotube; the epoxy resin system is formed by 100phr of epoxy resin E-51, 85phr of methyl hexahydrophthalic anhydride and 1phr of benzyl dimethylamine in a mixing manner. The thermal breakdown voltage of the polymer dielectric medium is significantly improved by the polymer dielectric material with high heat conductivity and high electric breakdown, the service life is prolonged, the dielectric constant and loss and the heat expansion coefficient are reduced, the mechanical strength and the tenacity are improved, the highest heat conductivity can be up to 5.26W/mK, the volume resistivity is about 1014ohm.cm, the thermal breakdown voltage is about 2-3kV/mm higher than that of the similar heat-conducting polymer dielectric medium, and the dielectric constant and the loss are a little lower than those of pure resin.

A microscale selective laser sintering (μ-SLS) that improves the minimum feature-size resolution of metal additively manufactured parts by up to two orders of magnitude, while still maintaining the throughput of traditional additive manufacturing processes. The microscale selective laser sintering includes, in some embodiments, ultra-fast lasers, a micro-mirror based optical system, nanoscale powders, and a precision spreader mechanism. The micro-SLS system is capable of achieving build rates of at least 1 cm³/hr while achieving a feature-size resolution of approximately 1 μm. In some embodiments, the exemplified systems and methods facilitate a direct write, microscale selective laser sintering μ-SLS system that is configured to write 3D metal structures having features sizes down to approximately 1 μm scale on rigid or flexible substrates. The exemplified systems and methods may operate on a variety of material including, for example, polymers, dielectrics, semiconductors, and metals.

The invention which discloses a lithium secondary battery with a metal fluoride as a cathode material belongs to the technical field of environmentally friendly secondary batteries. The lithium secondary battery is characterized in that: the lithium secondary battery comprises a positive electrode, a negative electrode, a membrane, an electrolyte or a polymer dielectric, a current collector, a positive electrode shell, and a negative electrode shell; the membrane or the polymer dielectric immersed with the electrolyte separates the positive electrode and the negative electrode; the positive electrode material which is coated on the current collector is connected with the positive electrode shell of the battery; the negative electrode is connected with the negative electrode shell of the battery; the positive electrode shell and the negative electrode shell mutually insulate; the positive electrode comprises the metal fluoride, a conductive agent, a binder, and the current collector; and the positive electrode material is the metal fluoride, and the chemical composition of the positive electrode material is MFa(H2O)b, wherein a is equal to or less than 3 and equal to or more than 1, and b which is equal to or less than 4 and equal to or more than 0 is an integer. The lithium secondary battery of the present invention has the advantages of simple preparation method, easily realized reaction condition, easily available raw material, low energy consumption in the preparation process, good security, and good electrochemical performance.

The invention provides a composite flexible pressure sensor based on a bionic microstructure and a preparation method of the composite flexible pressure sensor. The pressure sensor is divided into a capacitor layer, a common substrate layer and a piezoresistive layer from top to bottom. The capacitor layer comprises a protective film layer, a first electrode layer, a dielectric layer and a secondelectrode layer from top to bottom; the piezoresistive layer comprises a transverse electrode layer, a longitudinal electrode layer, a dielectric layer, a staggered electrode layer and a substrate film from top to bottom; the dielectric layer adopts a double-layer double-stage dome bionic microstructure and is made of a polymer with adjustable elasticity modulus, which is the same as that of the common substrate layer. The dielectric layer adopts a single-layer two-stage dome bionic microstructure, and is made of a nanoscale conductive composite material prepared by filling a flexible polymerwith multi-walled carbon nanotubes (MWCNT) and carbon black (CB); and the bottom staggered electrode layer adopts a multi-stage S-shaped interconnected wire structure. The composite flexible pressuresensor has the characteristics of relatively large detection range, high sensitivity, good stability and strong anti-interference performance.

The invention relates to a preparation method of a gel polymer dielectric film by conveying an interpenetrating network structure P (LiAMPS) single ion, which belongs to a preparation method of polymer electrolyte films. The present invention solves the problems of low transport numbers and dimension stability of the present gel polymer electrolyte ions. The invention employs 2-acrylamide-2-methyl propanesulfonic acid lithium (LiAMPS) and vinyltriethoxysilane free radical polymerization to obtain a linear polymer P (LiAMPS-co-VTES), P (LiAMPS-co-VTES) containing an ethoxy functional group enables hydrolysis and polycondensation to form a net structure, simultaneously a cross-linking agent monomer polyethylene glycol dimethyl methacrylate is performed a free radical polymerization to form another net structure. The invention is capable of raising the dimension stability of the polymer electrolyte. Through heat weightlessness analysis, the polymer electrolyte films have good heat stability, the initial weightless temperature of the films is more than 200 DEG C, so that the requirement of lithium ion battery can be satisfied.

The invention relates to a COFs film material with a ultra-low dielectric constant, which belongs to the field of a dielectric material. The film material is the novel highly crystalline, uniform thickness, porous, flexible, moisture-resistant, ultra-low dielectric constant film material formed by reacting between two immiscible solution interfaces, and the dielectric constant can be as low as 1.19; and the regulation of properties and thickness can be achieved by regulating the composition and concentration of the components of two solutions. Compared with the conventional inorganic dielectric material and the organic high-molecular polymer dielectric material, the film material of the invention has the advantages of good stability of the inorganic dielectric material, low dielectric constant, as well as good flexibility and easy processing, good humidity resistance and the like, and develops the system of low dielectric constant dielectric materials.

The invention relates to a soft type polymeric compound lithium battery and a preparation method thereof. The soft type polymeric compound lithium battery is characterized by comprising a positive electrode piece which takes aluminize carbon cloth as a current collector, a negative electrode piece which takes coppered carbon fibre cloth as a current collector, and a partition plate which is a compound polymer dielectric film and arranged between the positive electrode piece and the negative electrode piece, wherein an aluminium model film is used for external packing. The soft type polymeric compound lithium battery provided by the invention has the advantages of strong shock resistance property, high safety feature, high mechanical property and good flexility.

The invention discloses a silicon substrate air-impermeability sealing structure and a manufacturing method thereof. The sealing structure comprises a silicon substrate provided with a complete through hole filled with first metal, the surface of the silicon substrate is passivated, and the back face of the silicon substrate is provided with a bonding pad. The front face of the silicon substrate is filled with a polymer dielectric layer provided with an opening which is filled with second metal. The upper surface of the polymer dielectric layer is provided with a metal wiring layer and an insulating layer. The second metal wiring layer and the second metal are in contact to form electric connection. A chip is mounted on the upper surface of a second insulating layer. A pin of the chip is electrically connected with the second metal wiring layer through a bonding wire, and the second metal wiring layer and the second metal are in direct contact to form electric connection. The second metal and the first metal are in direct contact to form electric connection. A cover plate and the silicon substrate are sealed together through sealing materials to form a cavity. The silicon substrate air-impermeability sealing structure and the manufacturing method thereof can effectively reduce the packaging size, improve structural strength, and simplify the production technology.

This invention discloses a gel polymer electrolyte, a preparation method for the same, a super capacitor and an application thereof. The gel polymer electrolyte preparation method includes steps of preparing viscous liquid containing PEO polymer, preparing gel polymer dielectric films through curtain coating and dipping and absorbing the electrolyte. The super capacitor contains the gel polymer electrolyte. The preparation method for the gel polymer electrolyte is simple in preparation, mature in technology and high in rate of finish products and efficiency, and effectively reduces the production cost. The gel polymer electrolyte prepared by the method has strong mechanical strength and high conductivity. The super capacitor containing the gel polymer electrolyte is high in the rate of finished products and low in production cost, and has excellent chemical properties and expands the application range of the super capacitor.

The invention relates to a preparation method of an anion-exchange membrane, which comprises the following steps: generating free radicals on the surface of polymer powder by plasma bombardment, carrying out graft copolymerization on the free radicals and chloromethyl styrene monomer, introducing functional radicals onto the polymeric matrix, and quaternizing and alkalifying the functional radicals to form ion-exchange radicals, thereby obtaining the anion-exchange membrane of which the functional radicals are uniformly distributed in the longitudinal direction. The method provided by the invention has the advantages of no toxicity and no environment pollution, and does not damage the polymer frame. The prepared anion-exchange membrane has the advantages of favorable thermal stability, chemical stability, electron exchange capacity and ionic conductivity, and low methanol transmittance, is suitable for polymer dielectric fuel batteries, and is especially suitable for alkaline direct alcohol fuel batteries.

In the invention, polymer dielectric instead of liquid electrolyte is applied to lithium cell to produce cell in different shapes with performances of safety, lightweight and high energy density. In contrast, in prior art, there are disadvantages such as unstable liquid and bad mechanical properties in existed technique. Gel state inorganic-organic hybrid polymer dielectric is prepared through ultraviolet light radiation to trigger off polymerization. The polymer dielectric is amorphous in room temperature possessing features of high conductivity, stable thermal and mechanical properties. Advantages of ultraviolet light solidifying method are one-step molding, simple technique, high efficiency, no pollution. Performed polymer of inorganic-organic hybrid polymer is prepared by reconstructing end group after sol-gel reaction of alkoxyl silicon compound. In room temperature, ionic conductivity is reached to 8.4x10 to the power -3 Scm being close to conductivity of liquid electrolyte.

The invention relates to the technical field of nanocomposite materials and aims to provide a silicon dioxide/magnesium oxide/polymer dielectric and hydrophobic composite material and a preparation method. The dielectric and hydrophobic material is prepared from polymethyl methacrylate as a polymer matrix and magnesium oxide coated with a silicon dioxide shell as a filling material by blending andtape casting, wherein the filling material accounts for 10%-40% of the total mass of the dielectric and hydrophobic material and adopts silicon dioxide as the shell and flaky magnesium oxide as the core. The silicon dioxide/magnesium oxide/polymer dielectric and hydrophobic composite material and the preparation method have the following advantages: interfacial interaction areas between inorganicparticles as well as between the inorganic particles and a polymer can be increased, the interfacial polarization effect is enhanced, the dielectric constant of the composite material is increased, and the surface hydrophobicity is improved. The preparation process is simple, and the method is high in operability and repeatability. Dielectric, thermal and hydrophobic properties of the composite material can be regulated and controlled by regulating the adding content of inorganic filler, and the composite material can be applied to manufacturing of capacitors, electrowetting displays and other devices and has broad development prospect.

The invention discloses a high-temperature-resistant and high-dielectric polymer-based composite dielectric material as well as a preparation method and application thereof, and belongs to the technical field of polymer dielectric materials. According to the high-temperature-resistant and high-dielectric polymer-based composite dielectric material disclosed by the invention, a thermoplastic polymer is used as a base material, and inorganic filler with a dual-core-shell structure is uniformly distributed in the base material. The inorganic filler with the dual-core-shell structure is formed byperforming surface modification on inorganic particles through a first cross-linking agent and then performing cross-linking through a second cross-linking agent. The composite dielectric material provided by the invention not only has excellent heat resistance, but also has high dielectric properties, can be applied to the fields of microelectronics, aerospace, integrated circuits, high-efficiency energy storage elements and the like needing high-temperature environments, and further widens the application range of the dielectric material. The preparation method is simple, conditions are mild, and raw materials are easy to obtain.

The invention relates to a polymer dielectric electrostatic polarization device and an electrostatic polarization method thereof which belong to the technical field of polarization, and particularly relate to a polarization method of a hole in a pole body and a polarization device. According to the polymer dielectric electrostatic polarization device, needle-shaped electrode arrays are lined on an electric conductive rod or an electric conductive pipe, electric conductive hoods are coaxially arranged on the periphery of the electric conductive rod or the electric conductive pipe; discharge high-voltage insulators are arranged between the electric conductive hoods and the electric conductive rod or the electric conductive pipe; one surfaces of the electric conductive hoods which face the needle-shaped electrode arrays are provided with openings and are provided with electric conductive grids; the discharge high-voltage insulators are arranged between the electric conductive grids and the electric conductive hoods, and the electrode system basis of a grid voltage-type electrostatic polarizer is formed. The invention also provides the electrostatic polarization method of the polymer dielectric electrostatic polarization device.