64results about How to "Increase K value" patented technology

The invention relates to a semiconductor structure and the making method, especially relating to an interface layer applied to transistor grid, namely high-dielectric constant semiconductor stacked structure and the making method thereof, using on-HfO2 Ti to absorb oxygen atoms on the interface layer so as to reduce the thickness of the interface layer until no interface layer. And the growth of TiO2 on Ti can help follow-up HfO2 growth. Besides, TiO2 dielectric constant is about 50, able to largely increase equivalent dielectric constant of grid dielectric layer. It can absorb oxygen by Ti to reduce Ti thickness, increase k value and reduce EOT. In addition, after heat treatment, the formed TiO2 can increase k value, too. And in TiO2, leakage current can not leap. And the invention can speed up application of high-dielectric constant grid dielectric and provide a space for future EOT sustained reduction.

A method of restoring a low-k material is described, applied to a substrate with a low-k material thereon, wherein the substrate has been subject to a previous process that raised the k-value of the low-k material. The method includes performing a plasma treatment to the low-k material to decrease the k-value thereof.

The invention relates to a negative dielectric liquid crystal compound containing a structural formula I and a liquid crystal medium of at least one compound containing the structural formula I and an electro-optical display containing the type of liquid crystal medium. The compound has high negative dielectric constant, relatively great K value and relatively low rotary viscosity and is suitable for quick-response VA liquid crystal and particularly suitable for VA-TFT and VA-IPS liquid crystal display.

Disclosed is a method of forming an opening. The method comprises the steps of providing a semiconductor substrate; forming a metal conductive layer on the semiconductor substrate; forming a dielectric layer on the metal conductive layer and forming an opening in the dielectric layer with the opening exposing a surface of the metal conductive layer, the surface of the metal conductive layer having a reaction residue and a side wall of the opening having a defect; removing the reaction residue on the metal conductive layer at the bottom of the opening by use of a first gas; repairing the defect on the side wall of the opening by use of a second gas; and removing, after treatment of the first gas and the second gas, a polymer on the surface of the metal conductive layer by use of a third gas. The method of forming the opening is used for improving electrical properties, stability and yield of an integrated circuit.

The invention relates to a cyclopropyl-containing negative dielectric anisotropic liquid crystal composition which contains at least one or more of compounds shown in the formulas I-a and I-b and at least one ore more of compounds shown in the formulas II-a and II-b. The cyclopropyl-containing negative dielectric anisotropic liquid crystal composition disclosed by the invention has the advantages of proper negative dielectric anisotropy, proper optical anisotropy, low viscosity and wide nematic temperature range, thereby having preferable application in an electro-optical display and an active matrix display with VA, FFS or IPS effect especially. (The formulas I-a and I-b and the formulas II-a and II-b are shown in the specification).

The invention relates to a novel negative dielectricity liquid crystal compound having a structural formula I as shown in the description, relates to a liquid crystal medium comprising at least one compound having the structural formula I and also relates to an electro-optic display containing the liquid crystal medium. The compound has the advantages of high negative dielectricity, larger K value and lower rotational viscosity and is suitable for fast-response VA liquid crystals, especially VA-TFT smf VA-IPS LCD liquid crystal display.

The invention discloses a method for calibrating a small-diameter probe for an ultrasonic flaw detector, belonging to the method for calibrating an instrument. The method for calibrating the small-diameter probe for the ultrasonic flaw detector comprises the following steps in sequence: manufacturing a test block for calibrating the small-diameter probe for the ultrasonic flaw detector; moving the external circular arc probe near the point O1 on the surface of the arc of the test block back and force, wherein the arc of the test block is drawn by adopting the radius R2; obtaining the range S1 of the echo of a radius R1; measuring the distance between the point O1 and the foremost edge of the small-diameter probe, wherein the distance is the front edge b of the small-diameter probe; adjusting the direction of the small-diameter probe to make the small-diameter probe aligned to the direction of the hole, and obtaining the range S of the echo of the hole; and obtaining the range a of the echo in the small-diameter probe and the value K of the small-diameter probe. The invention makes up the blank of the calibration of the value K of the small-diameter probe, the front edge b of small-diameter probe and the range a of the echo in the small-diameter probe and reduces the loss cost of the small-diameter probe.

The invention relates to a ventilation and heat preservation module heating and cooling floor and energy-saving ventilation and air conditioning system which comprises a ventilation and heat preservation module heating and cooling floor body, a ventilation and air conditioning system body and a heat preservation and ventilation window. The ventilation and heat preservation module heating and cooling floor body is composed of an expandable polyethylene cushion layer, a ventilation and heat preservation module body, a floor heating pipeline, a water division and collection device, a dehumidification and heat radiation air supply pipe, a dehumidification and heat radiation air channel, a dehumidification and heat radiation air collection pipe, an air conditioner floor air supply pipe, a dampproof heat conduction layer and a wood floor from bottom to top in sequence. The heat preservation and ventilation window and the ventilation and air conditioning system body are communicated to form the complete energy-saving ventilation and air conditioning system. The K value of the window is improved, the heat preservation and ventilation window is adopted as an air inlet and exhaust channel, and the energy consumption of a ventilation air conditioner is lowered. The effect of the ventilation air conditioner is improved, a floor heating tail end has the two purposes for heating and cooling, waste heat is recycled, and mounting and running cost is lowered. The aims that air is purified, and a user can breathe clean and fresh air without opening the window are achieved.

The invention relates to an SAT (satisfiability) based method for bounded model checking (BMC) for propositional projection temporal logic (PPTL). The method includes the following steps of utilizing a Kripke structure to describe a system model M to be verified; utilizing a PPTL formula to describe a property P; setting up a bound k; converting the bounded model checking for the PPTL into an SAT problem; and solving the SAT problem. In the step of solving the SAT problem, a solution of the SAT problem indicates that the system model M is not satisfiable to the property P, otherwise, non-solution of the SAT problem indicates that the bound of the system model M is satisfiable to the property P; the value of the K is increased to move on to the next checking period until the value of the k is large enough and the bound of the system model M is satisfiable to the property P in every bounded model checking period. The problem that a CTL (computation tree logic) and an LTL (linear temporal logic) are limited in abilities of expression is solved by utilizing the PPTL to describe the system property, the status space explosion problem is released by limiting searching length to reduce searching status number, and convenience and effectiveness for checking complex system property are improved by combining respective advantages of the PPTL and the BMC. The SAT based method for the bounded model checking for the PPTL is applicable to formal verifications for soft and hardware systems and communication protocols.

A method for reducing the leakage current in DRAM Metal-Insulator-Metal capacitors includes forming a flash layer between the dielectric layer and the first electrode layer. A method for reducing the leakage current in DRAM Metal-Insulator-Metal capacitors includes forming a capping layer between the dielectric layer and the second electrode layer. The flash layer and the capping layer can be formed using an atomic layer deposition (ALD) technique. The precursor materials used for forming the flash layer and the capping layer are selected such they include at least one metal-oxygen bond. Additionally, the precursor materials are selected to also include “bulky” ligands.

The invention discloses a transmitting and receiving system for improving comprehensive efficiency of an M-ary position phase shift keying (MPPSK) modem. An MPPSK modulation simple expression is used as basis, FORMULA, wherein omegac is angular frequency of a modulation carrier; Tc is equal to 2Pi/omegac and serves as a carrier period; rg is more than or equal to 0 and less than 1 and is used as a sign protection interval control factor; rg and integers M, N and K form a modulation parameter for changing the bandwidth, the transmission efficiency and the demodulation performance of a signal; an emitter is modulated by radio frequency or an emission medium frequency which is as high as possible; a receiver performs impact filter demodulation by up conversion frequency or a receiving medium frequency which is as high as possible; and therefore, a K value which is reduced by the emission end is increased, and the code error rate performance is improved.

The present invention provides a preparation method of a high k-gate dielectric layer and a silicon carbide MOS power device. The preparation method comprises the steps of: performing high-temperaturesacrificial oxidation of a silicon carbide epitaxial wafer with a first conductive type, and forming a sacrificial oxidation layer at the upper surface of the epitaxial layer of the silicon carbide epitaxial wafer; performing corrosion of the sacrificial oxidation layer until the sacrificial oxidation layer on the epitaxial layer is completely removed; performing high-temperature surfacing processing of the upper surface of the epitaxial layer after removal of the sacrificial oxidation layer, and forming a smooth passivated surface; and depositing an Al2O3 dielectric coating layer, a LaAlO3 dielectric layer and an Al2O3 dielectric coating layer at the smooth passivated surface in order, performing annealing of a laminated structure formed by the Al2O3 dielectric coating layer, the LaAlO3dielectric layer and the Al2O3 dielectric coating layer, and forming a high k-gate dielectric layer. Compared to the prior art, the preparation method of the high k-gate dielectric layer and the silicon carbide MOS power device can reduce the interface defects caused by impurities and/or surface lattice defects at a SiC/SiO2 interface so as to improve the voltage endurance capability of the gate dielectric layer.

The invention relates to a composition for stagnant blood constitution, and a preparation method and application of the composition. Used medicinal materials are extracted and purified by using a semi-bionic extraction method and an ultrasonic method, active ingredients are effectively kept, and the composition is obtained by preparation. The composition has effects of invigorating the circulation of blood, moistening dryness and removing blood stasis for promoting tissue regeneration, and has unique curative effects for blood stasis symptoms.

The invention belongs to the technical field of lithium ion batteries, and discloses a method for improving the infiltration effect of a battery cell. The method comprises the steps of primary infiltration, micro-charging, rolling, pre-charging, high-temperature infiltration and the like. The invention further discloses the lithium ion battery cell obtained after treatment by the method. By adopting the infiltration method provided by the invention, the infiltration effect of the battery cell pole piece is greatly improved, the surface of the battery cell pole piece is fully infiltrated by theelectrolyte, the surface of the pole piece is free of lithium precipitation, wrinkles and peeling, and the safety performance of the battery cell is improved. Performance comparison data show that compared with the prior art, the K value, DCR and capacity of the process provided by the invention are improved.

The invention provides a watch capable of dehumidifying and demisting, which comprises a bottom cover, a watchcase and a glass surface, and is characterized in that the side surface of the watchcase is provided with a gas inlet valve and a gas exhaust valve, and the hollow interior of the watch is filled with an argon gas by means of the gas inlet valve; the hollow interior of the watch is furtherprovided with a drying agent; and the gas exhaust valve is used for exhausting a gas in the hollow interior of the watch when the argon gas is injected by means of the gas inlet valve. The interior of the watch is kept dry by means of the internally arranged drying agent; meanwhile, the inert gas argon is filled in to replace the common air in the hollow interior of the watch, the K value of thehollow interior is effectively improved, condensation of the glass is reduced, the interior of the glass watch surface is effectively kept dry, the outer surface of the watch surface is not prone to frost, and the adaptive capacity of the watch in an extreme environment is improved; and whether the drying agent needs to be replaced or not is conveniently identified by means of a transparent observation window.

The invention provides a production method of a metal-silicon nitride-metal capacitor, which comprises the steps of: 1) depositing a low-k-value dielectric layer; 2) forming a metal-oxide-metal (MOM) area through photoetching and etching; 3) depositing high-k-value silicon nitride through a plasma enhanced chemical vapor deposition (PECVD) method; 4) removing excessive silicon nitride through chemical and mechanical grinding to form a low-k-value dielectric and silicon nitride mixed layer; 5) completing photoetching and etching to form a metal groove on the low-k-value dielectric and silicon nitride; 6) completing the deposition and the chemical and mechanical grinding of the metal layer and then forming the metal fillers of a conducting wire and an MOM capacitor; and 7) completing copper interconnection and the production of the MOM capacitor. By improving the k value of the dielectric of the inter-layer capacitor, the capacitance of the inter-layer capacitor is effectively improved. By improving the performance of the high-k-value silicon nitride, the electric properties such as the puncture voltage, the leakage current and the like of the MOM capacitor and the electric uniformity of devices are effectively improved. The production method is very practical.

The invention belongs to the field of liquid crystal compound materials, and relates to a liquid crystal compound containing dibenzothiophene and oxygen-containing heterocycles and application of the liquid crystal compound. The chemical structural formula is shown in the formula I. The liquid crystal compound and a liquid crystal composition containing the liquid crystal compound have the advantages of large dielectric, high clearing point, high refractive index, high K value and the like, and are suitable for displays in VA, ECB, PALC, FFS or IPS modes.

The invention discloses a liquid crystal composition and the application of the liquid crystal composition to a liquid crystal display. The liquid crystal composition has positive dielectric anisotropy and is excellent in performance; the refractive index of the liquid crystal composition is larger than 0.100 and smaller than 0.120; the liquid crystal composition is suitable for a liquid crystal panel which is small in thickness and high in respond speed, has a wide application prospect and a good application value, and is particularly suitable for displays which comprise TN-TFT, IPS-TFT and FFS-TFT active matrixes and are high in respond speed, small in thickness, and high in image display quality. The liquid crystal composition comprises the following liquid crystal compounds of I, II, III, IV and V which are shown in the description.

The invention discloses a campus bulwark behavior early warning system and method based on an artificial intelligence technology. The system comprises a processor, a student terminal and a teacher terminal. The processor is used for executing calculation and artificial intelligence analysis; the student terminal is used for students to carry out bulking alarm, the teacher terminal is used for teachers to receive information sent by the processor and carry out subsequent processing according to the sent information, the processor comprises a memory, a basic database is stored in the memory, andthe basic database comprises information of all students. The system can be used for carrying out accurate bulking early warning.

The invention provides a high-K gate dielectric layer formation method and a semiconductor device. The method comprises the following steps: providing a semiconductor substrate, a dielectric layer being formed on the semiconductor substrate, and a gate opening being formed in the dielectric layer; and depositing a high-K material layer, wherein the high-K material layer covers the bottom portion and side wall of the gate opening, and the high-K material layer is made of the mixture of HfO2 and ZrO2. The method helps to improve the film quality of a high-K gate dielectric layer, and helps to form the high-K gate dielectric layer having higher K value and thinner equivalent oxide layer thickness.

The invention relates to a liquid crystal composition, a liquid crystal display element containing the liquid crystal composition and a liquid crystal display, and belongs to the field of liquid crystal display. The liquid crystal composition disclosed by the invention comprises a compound shown as a formula I, one or more compounds shown as a formula II and one or more polymerizable compounds, and the liquid crystal composition has a large K value, a relatively high clearing point (CP) and a large dielectric property (delta epsilon).

The invention discloses an InP substrate MOSCAP structure and a manufacturing method thereof. The method includes the steps that S1, an Al2O3 gate dielectric (102) is deposited on an InP substrate; S2, N2 plasma treatment is conducted on the surface of the Al2O3 gate dielectric to form an AlON passivation layer (103); S3, a high-K gate dielectric (104) is deposited on the AlON passivation layer; S4, a metal gate structure (105) is formed on the high-K gate dielectric. The AlON passivation layer is formed by conducting N2 plasma treatment on the surface of the Al2O3 gate dielectric, and the high-K gate dielectric grows on the AlON passivation layer, so that defects in the Al2O3 gate dielectric are effectively repaired, the quality of the gate dielectric is greatly improved, EOT is reduced while grid electrode electric leakage is reduced, device reliability is improved, and electrical properties of III-V semiconductors (MOS) are greatly improved.