1094results about How to "Reduce the number of layers" patented technology

The present invention provides a method of fabricating an airgap-containing interconnect structure in which a patternable low-k material replaces the need for utilizing a separate photoresist and a dielectric material. Specifically, this invention relates to a simplified method of fabricating single-damascene and dual-damascene airgap-containing low-k interconnect structures with at least one patternable low-k dielectric and at least one inorganic antireflective coating.

A metal layer 18 is sandwiched between insulating layers 14 and 20 so that required strength is maintained. Hence it follows that the thickness of a core substrate 30 can be reduced and, therefore, the thickness of a multi-layer printed circuit board can be reduced. Formation of non-penetrating openings 22 which reach the metal layer 18 in the insulating layers 14 and 20 is simply required. Therefore, small non-penetrating openings 22 can easily be formed by applying laser beams. Thus, through holes 36 each having a small diameter can be formed.

The present invention relates to compact palletizers that include a stretch-wrap operation as the pallet is built. Specifically, the present invention uses a robot to place items from a fixed infeed elevation either above or, alternatively, below the height of the finished load. A four-sided compression mechanism compresses the rough-built load to the final pallet size and then the entire layer is released to the pallet.Individual items or group of items are picked and placed onto a layer support device in a loose orientation. The loose orientation enables a much faster palletizing operation because the robotic arm that pick-and-places the item, the items, or the row of items, can travel much faster as it does not have to precisely locate the item, items, or row of items. During the time that a layer is being loosely constructed on the layer support device concurrent wrapping can occur.

A vertical winding structure for planar integrated magnetics used in switched-mode power converters maintains close coupling between the different windings but reduces the eddy current losses, lowers the DC winding resistance and reduces the number of layers of the PCB. Vertical and horizontal windings can be used together without sacrificing these performance advantages and further minimizing the capacitive coupling between the outer-leg windings and the center-leg winding. This winding structure can be used in a wide range of magnetic structures including isolated and non-isolated CDRs, interleaved CDRs, and buck and boost converters.

The invention discloses a graphene / molybdenum disulfide (MoS2) compound nano material lithium ion battery electrode and a preparation method thereof. The electrode comprises the following components in percentage by mass: 75 to 85 percent of compound nano material serving as an active substance, of a graphene nano slice and MoS2, and 5 to 10 percent of acetylene black and 10 percent of polyvinylidene fluoride; and the mass ratio of the graphene nano slice to the MoS2 nano material in the compound nano material active substance is (1 to 1)-(4 to 1). The preparation method of the electrode comprises the following steps of: preparing an oxidized graphite nano slice by using graphite as a raw material by a chemical oxidization method; synthesizing by a one-step hydrothermal in-situ reduction method in the presence of the oxidized graphite nano slice to obtain a graphene nano slice / MoS2 compound nano material; and finally, preparing the electrode by using the graphene nano slice / MoS2 compound nano material as the active substance. The electrode has high electrochemical lithium storage reversible capacity and cyclic stabilization performance, and can be widely applied to new generation lithium ion batteries.

The invention relates to an arrangement for an organic pin-type light-emitting diode with an electrode and a counter-electrode and a stack with organic layers between the electrode and the counter-electrode, where the stack with the organic layers comprises an emission layer comprising a k (k=1, 2, 3, . . . ) organic matrix materials, a doped charge carrier transport layer, which is arranged between the electrode and the emission layer, a further doped charge carrier transport layer, which is arranged between the counter-electrode and the emission layer, and one block layer, which is arranged between one of the doped charge carrier transport layers and the emission layer. The organic layers of the stack are formed by means of n (n≦k+2) organic matrix materials, where the n organic matrix materials comprise the k organic matrix materials of the emission layer. The stack with the organic layers can also be executed in a block-layer-free manner, where then the emission layer and the doped charge carrier transport layer are formed from an organic matrix material. Furthermore, a method for manufacturing such arrangements is stated.

A bandaging system for-use in the treatment of a patient with a venous leg ulcer comprising as an inner layer in the system a highly absorbent bandage which bandage comprises at least 5% by weight of a highly absorbent fibre and as a further layer in the system an elastic bandage.

The invention discloses a compound nano material of graphene and molybdenum disulfide (MoS2) and a preparation method thereof. The compound material is formed by mixing graphene and a MoS2 nano material in a mass ratio of (1 to 1)-(4 to 1). The preparation method comprises the following steps of: preparing an oxidized graphite nano slice from graphite by a chemical oxidization method; then dissolving molybdate into deionized water so as to form 0.02 to 0.07M of solution; adding L-cysteine serving as a sulfur source and a reduction agent, wherein the mass ratio of the L-cysteine to the molybdate is (5 to 1)-(12 to 1); adding the oxidized graphite nano slice into the solution, and ultrasonically treating so that the oxidized graphite nano slice can be fully dispersed in the hydrothermal reaction solution; transferring the mixture into a hydrothermal reaction kettle and sealing; and synthesizing by a one-step hydrothermal method to obtain the compound nano material of graphene and MoS2, wherein the mass ratio of the graphene nano slice to the MoS2 is (1 to 1)-(4 to 1). The method has the characteristics of mild reaction condition and simple process. The compound nano material of graphene and MoS2 synthesized by the method can be widely used as electrode materials of new energy batteries, high-performance national lubricants, catalyst carriers and the like.

The invention relates to a method for preparing large-scale graphene through supercritical carbon dioxide exfoliation. Supercritical carbon dioxide is adopted as an exfoliant, a surfactant is adopted as a dispersant, graphite powder and the dispersant are put in an autoclave, the carbon dioxide is pumped in the autoclave and circularly flows in a supercritical state, and then the pressure is reduced quickly to be normal pressure; the process is repeated so that the materials undergo pressure increment and pressure reduction several times; and the layers of the graphene is controlled by controlling the times of pressure increment and pressure reduction, so as to prepare the large scale graphene. Compared with the prior art, the invention has the advantages as follows: large-scale (hundreds of micrometers) high-quality graphene can be prepared; the method belongs to physical exfoliation, the treatment conditions are mild, and the quality of the graphene cannot be damaged; besides, the carbon dioxide used in the method is nontoxic, cheap and easy to obtain, and the technology is simple.

The present invention provides an interconnect structure in which a patternable low-k material is employed as an interconnect dielectric material. Specifically, this invention relates to single-damascene and dual-damascene low-k interconnect structures with at least one patternable low-k dielectric. In general terms, the interconnect structure includes at least one patterned and cured low-k dielectric material located on a surface of a substrate. The at least one cured and patterned low-k material has conductively filled regions embedded therein and typically, but not always, includes Si atoms bonded to cyclic rings via oxygen atoms. The present invention also provides a method of forming such interconnect structures in which no separate photoresist is employed in patterning the patterned low-k material.

A directional coupler with a high coupling per unit area and small variations in characteristic at manufacturing capable of achieving a high directivity easily and an RF circuit module provided with the directional coupler are achieved. A main-line is provided on a front surface of a multi-layer substrate, a ground plane is provided on a back surface of the multi-layer substrate. On an inner layer immediately under the main-line, two lines in parallel with the main-line are provided, and one line is provided on a layer closer to the ground plane than the two lines. By connecting the two lines and the one line with vias, a sub-line with a shape of a winding of a loop is formed. In the sub-line, a main component of a vector vertically penetrating the loop is horizontal with respect to the ground plane.

A metal layer 18 is sandwiched between insulating layers 14 and 20 so that required strength is maintained. Hence it follows that the thickness of a core substrate 30 can be reduced and, therefore, the thickness of a multi-layer printed circuit board can be reduced. Formation of non-penetrating openings 22 which reach the metal layer 18 in the insulating layers 14 and 20 is simply required. Therefore, small non-penetrating openings 22 can easily be formed by applying laser beams. Thus, through holes 36 each having a small diameter can be formed.

The invention provides an OLED (organic light emitting diode) display. A thin film packaging layer of the OLED display comprises inorganic passivation layers, organic buffer layers and moisture / oxygen quenching layers. Stacking structures are jointly formed by the inorganic passivation layers and the organic buffer layers, and each moisture / oxygen quenching layer is a first moisture / oxygen quenching layer positioned between the corresponding stacking structure and an OLED layer or a second moisture / oxygen quenching layer positioned between the two corresponding inorganic passivation layers in the corresponding stacking structure or a combination of the first moisture / oxygen quenching layer and the second moisture / oxygen quenching layer. The OLED display has the advantages that damage of OLED devices due to moisture / oxygen can be effectively prevented by means of physical adsorption or chemical reaction under synergistic effects of the moisture / oxygen quenching layers, the inorganic passivation layers and the organic buffer layers in the thin film packaging layer on the premise that the light emitting performance of the OLED devices is unaffected, accordingly, the service lives of the OLED devices can be prolonged, and effects of releasing stress of the inorganic passivation layers further can be realized; the numbers of layers of the thin film packaging layer and the thickness of the thin film packaging layer are reduced, accordingly, the thickness of the OLED display can be integrally reduced, and the bending performance of the flexible OLED display can be enhanced.

The invention discloses a lithium ion battery electrode made of a graphene / SnS2 composite nanometer material and a preparation method thereof. The lithium ion battery electrode is characterized in that the active substance of the electrode is the graphene / SnS2 composite nanometer material, and the other components of the electrode are acetylene black and polyvinylidene fluoride. The lithium ion battery electrode comprises the following components in percentage by weight: 75-85% of the composite nanometer material active substance, 5-10% of the acetylene black and 10% of the polyvinylidene fluoride; and the mass ratio of the graphene to SnS2 nanometer material in the composite nanometer material active substance is (1:1)-(4:1). The electrode preparation method disclosed by the invention comprises the following steps: preparing a graphite oxide nanometer sheet by taking graphite as a raw material by virtue of a chemical oxidation method; in the presence of the graphite oxide nanometer sheet, synthetizing to obtain the graphene / SnS2 composite nanometer material by virtue of a one-step hydrothermal in-situ reduction method; and finally, taking the graphene / SnS2 composite nanometer material as the active substance to prepare the electrode. The electrode disclosed by the invention has the advantages of higher electrochemical lithium storage capacity and excellent cyclical stability and can be widely used in the new generation of lithium ion batteries.

The invention relates to a front multi-vehicle tracking method integrating a millimeter radar and depth learning vision. The millimeter radar is used for obtaining front data information, according tothe echo reflection strength and width information, invalid information is removed, and only front vehicle information remains. According to the method integrating the millimeter radar and a camera,by filtering radar information and generating a motion trajectory through an online tracking model, and trajectory correlation is performed. The front vehicles related to the trajectory are recorded and numbered. According to the generated trajectory and the numbered front vehicles, the steps just need to be repeatedly executed on data of the next period, consistency checking is performed, and thedata is added into the numbered trajectory. For newly appearing vehicles, trajectory generation, trajectory collection and numbering are performed according to the beginning steps. By combining advantages of the millimeter radar and the vision depth learning, and the target tracking accuracy and robustness for front multiple vehicles can be effectively improved.

An organic / inorganic oxide mixture has high capacitance density so as to realize a capacitor material that can be self-contained in a substrate. The mixture film made of inorganic oxide particle has a mean particle size of less than 90 nm dispersed in organic polymer, of which relative dielectric constant is more than 10 and thickness is less than 900 nm.

The invention discloses a preparation method of a graphite phase carbon nitride / molybdenum sulfide composite material. The preparation method comprises the following steps of mixing MoS2 and a nitrogen source uniformly, and adding a grinding agent for grinding for 30-60min until the materials are fully mixed uniformly to obtain a mixture, wherein the ratio of addition amount of MoS2 to the nitrogen source to the grinding agent is 1mmol:(3-7)mmol:(1-3)ml; (2) under the protection of N2, heating the mixture in the step (1) to 500-600 DEG C to roast for 3-5h to obtain a g-C3N4 / MoS2 composite material. Hydrogen cyanamide, dicyandiamide, tripolycyanamide or urea is taken as the nitrogen source. By using the method disclosed by the invention, the graphite phase carbon nitride / molybdenum sulfide composite material can be prepared by using a one-step method, so that the preparation process is simplified; and no chemical reagent is added, so that the production cost is reduced.

The invention relates to a drilling methods and devices based on double gradient control pressure including: 1. surveying underground pressure data and then transmitting to the Sea Central Control System; 2. The Sea Center Control System after calculation, analysis and processing, transmitted the control signals to device that control flow of sea low-density fluidand underground while drilling joint; 3. device that control flow of sea low-density fluid control the volume and flow of fluid through the pump transmitting to the double-wall drill pipe underground, 4. According to the directive of the central control system , adjusting the size of the injection while drilling joint entrance, and the low-density fluid between inside and outside of the drilling hole pipe will injecte between the drill pipe and borehole 5. the drilling fluid returning from the bottom will be diluted by the low-density fluid and in the air shaft ring formed at least two different pressure gradient; 6. drilling fluid can recycle after dealing with the devices. The invention can be used for offshore drilling and earth drilling.

The invention discloses a simple method for performing coating modification on microsphere surfaces by using a two-dimensional material thin film, a simple method for stripping the two-dimensional material, and products formed by coating and stripping. In the coating process, no solvent is used, a physical friction transfer method is adopted to transfer a lamellar compound thin film from the surface of a lamellar compound sphere to the surface of the microsphere, and screening is performed to obtain the coated product by utilizing the size difference between the product (coated microsphere) and the lamellar compound sphere. The whole process has the advantages of simple technique, low cost, high efficiency and high product purity, and is suitable for industrial production. In addition, the lamellar compound can be transferred from the microsphere surface into the solution by simple ultrasonic treatment in the solution; and thus, the invention provides a simple non-chemical method for stripping the lamellar compound, which is suitable for industrial production.

The invention provides a waveguide flat array antenna, which has the characteristics of broadband and high-efficiency feed. Rectangular open waveguides 11 are used as radiation units; four rectangular open waveguides in one group form a sub array, and are arranged in a 2*2 rectangle and supplied with broadband equal-amplitude in-phase feed by a rectangular cavity 21; and in order to ensure efficient transmission of electromagnetic wave, the joint of each rectangular open waveguide 11 and the rectangular cavity 21 is provided with matched steps 13 and 23. The center of the rectangular cavity 21 is provided with a rectangular window 22 which is connected with a feed network of the next layer. In order to ensure smooth signals, a rectangular matching block 42 is arranged at the feed network corner connected with each rectangular window 22. The feed network consists of multistage parallel E-T so as to ensure that the antenna has enough bandwidth. The transceiving capacity of circularly polarized wave is realized by arranging a circularly polarized cover. Compared with the conventional flat antenna, the waveguide flat array antenna has broader bandwidth and higher feed efficiency.

The invention discloses a converged network lane line detection method based on an attention mechanism and terminal equipment. The method comprises the following steps: synchronously acquiring a natural image and point cloud data of a road surface; inputting the natural image and the point cloud data into a pre-established and trained fusion network, and outputting a lane detection result, whereinthe fusion network performs information fusion processing on the point cloud data and the natural image by adopting an adding time sequence frame and an attention mechanism. According to the invention, continuous frames are used to improve the performance of the detection network so as to deal with complex situations such as mark loss and vehicle occlusion; and by splicing the low-dimensional features and the high-dimensional features through Skip Connection, image detail information which is continuously lost along with the increase of the network depth is made up, and the image is reduced by using Decoder to obtain a final result. The fusion network greatly improves the detection performance of the lane lines and can perform detection in various complex environments.

The invention provides a liquid-phase stripping preparation method of graphene. The liquid-phase stripping preparation method comprises the steps that first, an aromatic compound is used as a stripping agent to prepare a stripping agent solution, graphite powder is added, and graphite pre-stripping dispersion liquid is obtained after sufficient stirring; second, the graphite pre-stripping dispersion liquid obtained in the first step is subjected to stripping dispersion through ultrasonic and / or mechanical shear to obtain a graphene mixed dispersion system; third, the graphene mixed dispersion system obtained in the second step is centrifuged, the upper-layer solution can be taken for dialysis, and impurities are remove to obtain a pure graphene product. The liquid-phase stripping preparation method can effectively separate graphite flake layers, a large amount of graphene is obtained within a short period of time, and the prepared graphene is single-layer or double-layer graphene and is good in conductive / thermal performance and excellent in comprehensive performances. The liquid-phase stripping preparation method has the advantages of being simple in operation, high in efficiency and green, being environmentally-friendly and the like, and achievement of industrialized graphene preparation is hopeful.

The invention discloses a method for synthesizing a graphene film material, comprising the following steps: a grapheme film is grown on a copper substrate under mixed atmosphere of hydrogen and methane by using a chemical vapor deposition method; then the copper substrate grown with the grapheme film is placed flatly on a silicon substrate with the oxidized surface, the obtained silicon substrateis placed into a ferric nitrate solution, the copper substrate is dissolved, and at the moment, the graphene film is deposited on the silicon substrate; then, the solution is diluted, then the silicon substrate deposited with the grapheme is taken out of the solution, and is dried in a vacuum drying oven; and after ultrasonic cleaning is carried out on the silicon substrate deposited with the graphene, and the obtained silicon substrate is placed in an annealing furnace communicated with argon for protection to anneal, thus a high-quality grapheme sample is prepared. By utilizing the method for synthesizing the graphene film material, the original complex steps needed for preparing the graphene film are simplified, a toxic agent needed by a chemical method is avoided, and the production efficiency of the graphene film is improved, thus by measurement of a Raman spectrometer, the prepared graphene film is proved to have good performances and excellent reliability.

The invention discloses a touch liquid crystal grating and a 3D touch display device. Grating electrodes are arranged on a face toward a liquid crystal layer of a first substrate and in strip-like areas. A touch driving electrode is arranged in an interval area between adjacent strip-like areas. A touch sensitive electrode is arranged on a face of the first substrate opposite to the liquid crystal. When the grating electrodes are electrified, an electric field can be generated, so that liquid crystal molecules deflect to form strip-like gratings. The touch function can be fulfilled through the touch driving electrode and the touch sensitive electrode insulated from the first substrate. As the strip-like grating is formed only by forming a layer of grating electrode on the first substrate, the number of electrodes is reduced, and the light transmittance of the whole liquid crystal grating is improved. As a touch electrode and the grating electrode are both arranged on the first substrate, a voltage signal is conducted without using conducting resin, and counterpoint marks are not necessarily arranged on a second substrate, so that the preparation process is simplified, and the production cost is saved.

The invention discloses a method for preparing graphene from biomass waste, which comprises the following steps: pretreating biomass waste with white lime to obtain a biomass residue; and carrying out desilication hydrolysis, carbonization and carbonization material decalcification impurity removal on the biomass residue, and quickly heating to perform high-temperature graphitization. The prepared graphene has the advantages of fewer layers (2-10 layers), fewer defects, fewer oxy groups, high electric conductivity and small carbon layer interval. The prepared biomass fewer-layer graphene has a certain mesoporous structure, and is especially suitable to be used in the fields of lithium ion batteries, supercapacitors and the like. The method is simple in technique and convenient to operate, has the advantages of low cost and high graphene yield, and can easily implement industrialized large-scale production.

The invention relates to the organic light emitting diode display technology, in particular to an organic light emitting diode (OLED) display panel and an OLED spliced display screen with the same. The OLED display panel comprises a base plate, wherein the base plate is provided with an OLED module; the periphery and the upper part of the OLED module are provided with packaging layers; a structure formed by the OLED module and the back of the luminous surface of the display panel is provided with perforations from which a cathode and an anode are respectively introduced to the back of the luminous direction of the display panel; the positions for introducing the cathode and the anode on the back of the luminous surface of the display panel are respectively provided with conducting film layers which are not mutually connected; and a bonding area of an external-connection circuit is introduced out of the conducting film layers. According to the OLED display panel disclosed by the invention, the bonding area of the external-connection circuit is transferred to the back of the luminous surface of the device from the periphery of the OLED module edge so as to greatly reduce the non-luminous area of the device, and the OLED spliced display screen formed by splicing the OLED display panel is provided with a smaller abutted seam so as to optimize the splicing effect of the OLED spliced display screen.

Multilayer polymeric films and other optical bodies are provided which is useful in making colored mirrors and polarizers. The films are characterized by a change in color as a function of viewing angle.

The present invention relates to a method for implementing double-gradient well-drilling operation and its equipment. Said method includes the following steps: (1), the drilling fluid in which the light microspheres are mixed in sea surface is passed through top drive and drill pipe, and transferred to the well bottom by means of slurry pump; (2), the above-mentioned drilling fluid in which the light microspheres are mixed is passed through a separation injection device to separate out the microspheres from drilling fluid and make said microspheres be injected into the annular space between the drill pipe and well bore, the separated drilling fluid can be continuously flowed towards well bottom along the drill pipe; (3), the drilling fluid is passed through down hole safety valve and drill bit and reached to well bottom, then back-returned by means of annular space between well bore and drill pipe; (4), after the drilling fluid back-returned from the well bottom is diluted by microspheres positioned in annular space between well bore and drill pipe, two different pressure gradients are formed in the annular space between well bore and drill pipe; and (5), the drilling fluid containing light microspheres can be back0returned to sea surface from the annular space between well bore and drill pipe, and can be continuously reutilized.

The invention relates to the graphene technical field, and specifically discloses a preparation method and an application of a graphene slurry. The preparation method of the graphene slurry includes the following steps of preparation of a graphite intercalated compound, preparation of a graphite expansion body and preparation of the graphene slurry, wherein an intercalator is any one of nitric acid with the mass concentration of 65%-98%, a mixture of nitric acid with the mass concentration of 65%-98% and an organic acid, and a mixture of nitric acid with the mass concentration of 65%-98% and phosphoric acid with the mass concentration of 80%-98%. The preparation of the graphene slurry has no need of concentrated sulfuric acid as a reaction medium, and the prepared graphene slurry does not contain sulfur and has less layer number. The graphene slurry can greatly increase multiplying power capability and cycle performance of lithium ion batteries when used in the lithium ion batteries, and can overcome defects of a conventional sulfur-containing graphene material in anticorrosive coatings when used in a graphene anticorrosive coating. The preparation method of the graphene slurry provides a good route for production and application of sulfur-free graphene and is suitable for realizing industrialization.