66results about How to "Reduce defect level" patented technology

In an inverse-stagger MOSFET (1), a gate insulating layer (4) made of amorphous aluminum oxide is so formed as to face a channel layer (5) which serves as the semiconductor layer, and which is made of zinc oxide. With this arrangement, a defect level at an interface between the channel layer (5) and the gate insulating layer (4) is reduced, thereby obtaining performance equivalent to that of a semiconductor apparatus in which all the layered films are crystalline. This technique is applicable to a staggered MOSFET and the like, and has high versatility.

In a method of fabricating an SOI wafer, an oxide film is formed on the surface of at least one of two silicon wafers; hydrogen ions or rare gas ions are implanted into the upper surface of one of the two silicon wafers in order to form a fine bubble layer (enclosed layer) within the wafer; the ion-implanted silicon wafer is superposed on the other silicon wafer such that the ion-implanted surface comes into close contact with the surface of the other silicon wafer via the oxide film; heat treatment is performed in order to delaminate a portion of the ion-implanted wafer while the fine bubble layer is used as a delaminating plane, in order to form a thin film to thereby obtain an SOI wafer. In the method, a defect layer at the delaminated surface of the thus-obtained SOI wafer is removed to a depth of 200 nm or more through vapor-phase etching, and then mirror polishing is performed. Therefore, the obtained SOI wafer has an extremely low level of defects and a high thickness uniformity.

A driving device includes a driving control unit that reads out the signal charge generated by at least the charge generating section for a low-sensitivity pixel signal to the charge transfer section, after the predetermined timing, continues incidence of the electromagnetic wave and, after continuing the incidence of the electromagnetic wave, reads out the signal charge generated by at least the charge generating section for a high-sensitivity pixel signal to the charge transfer section, transfers the signal charge read out to the charge transfer section through the charge transfer section, and, concerning at least one of the signal charges for the high-sensitivity pixel signal and the low-sensitivity pixel signal, every time the signal charge is read out to the charge transfer section, transfers the signal charge read out to the charge transfer section through the charge transfer section without retaining the signal charge in the charge transfer section.

One object is to provide a new semiconductor device whose standby power is sufficiently reduced. The semiconductor device includes a first power supply terminal, a second power supply terminal, a switching transistor using an oxide semiconductor material and an integrated circuit. The first power supply terminal is electrically connected to one of a source terminal and a drain terminal of the switching transistor. The other of the source terminal and the drain terminal of the switching transistor is electrically connected to one terminal of the integrated circuit. The other terminal of the integrated circuit is electrically connected to the second power supply terminal.

Disclosed is a thin film transistor including: a gate insulating layer covering a gate electrode; a microcrystalline semiconductor region over the gate insulating layer; a pair of amorphous semiconductor region over the microcrystalline semiconductor; a pair of impurity semiconductor layers over the amorphous semiconductor regions; and wirings over the impurity semiconductor layers. The microcrystalline semiconductor region has a surface having a projection and depression on the gate insulating layer side. The microcrystalline semiconductor region includes a first microcrystalline semiconductor region which is not covered with the amorphous regions and a second microcrystalline semiconductor region which is in contact with the amorphous semiconductor regions. A thickness d1 of the first microcrystalline semiconductor region is smaller than a thickness d2 of the second microcrystalline semiconductor region and d1 is greater than or equal to 30 nm.

A method of finding defects in sealing material formed as a frame line on a glass plate includes irradiating the frame line of sealing material. A temperature of the irradiated sealing material is measured and a change of the temperature caused by a nonuniformity in sealing material is detected. Another aspect features a method of hermetically sealing a thin film device between glass plates. Sealing material is dispensed on a cover glass plate in the form of a frame line cell. The sealing material is pre-sintered onto the cover glass plate and cooled. A laser beam is moved around the frame line on the sealing material. A temperature of the sealing material contacted with the laser beam is measured. A change in the temperature (ΔT) caused by a nonuniformity in the sealing material is measured. Further aspects include a feedback process, infrared imaging and use of delta temperature data to increase sensitivity of temperature measurement data.

A method of generating mask layouts for self-aligned block patterning is provided. Metal line patterns to be formed on a semiconductor substrate is identified. A mandrel mask layout for first mask based on the metal line patterns is generated in view of a self-aligned double patterning (SADP) process for forming a plurality of mandrels on the semiconductor substrate. The mandrel mask layout may include a plurality of mandrel patterns. A non-mandrel block mask layout for second mask is generated based on the mandrel mask layout for cutting metal lines formed under gaps between spacers in non-mandrel area on the semiconductor substrate. The non-mandrel block mask layout may include a plurality of first block patterns and a plurality of first density assist patterns. A mandrel block mask layout for third mask is generated based on the mandrel mask layout for cutting metal lines formed under mandrel area on the semiconductor substrate.

The thin film transistor includes a gate insulating layer covering a gate electrode, over a substrate having an insulating surface; a semiconductor layer forming a channel formation region, in which a plurality of crystal regions is included in an amorphous structure; an impurity semiconductor layer imparting one conductivity type which forms a source region and a drain region; and a buffer layer formed from an amorphous semiconductor, which is located between the semiconductor layer and the impurity semiconductor layer. The thin film transistor includes the crystal region which includes minute crystal grains and inverted conical or inverted pyramidal grain each of which grows approximately radially from a position away from an interface between the gate insulating layer and the semiconductor layer toward a direction in which the semiconductor layer is deposited in a region which does not reach the impurity semiconductor layer.

The invention relates to a halide intercalated porous graphene material. The halide intercalated porous graphene material contains porous graphene sheets and a halide; the halide is intercalated between the porous graphene sheets; the particles of the halide are evenly spread between the porous graphene sheets at one single layer. The preparation method of the halide intercalated porous graphene material comprises the steps of taking a halide intercalated graphite compound as the raw materials and performing ultrasonic stripping on the raw material in a solvent to prepare the halide intercalated porous graphene material. The method is simple; the raw material is cheap and the equipment is easy to obtain; the production cost of the graphene is greatly reduced; in short, the method can be widely applied to the field of preparation of lithium-ion reversible battery electrode materials, energy source materials, conductive materials, heat-conducting materials and the like.

The invention relates to a method for preparing an ultrapure copper ingot by performing electron beam melting technology on an ultrapure copper plate obtained by adopting an electrolytic method in an electron beam melting furnace. The method is characterized in that: in the preparation process, a 6 N (the purity is more than or equal to 99.9999 percent) electrolytic ultrapure copper plate is taken as a raw material, is subjected to surface cleaning and is subjected to the electron beam melting technology in the electron beam melting furnace so as to obtain a 6 N or more than 6 N ultrapure copper ingot. The invention provides a method which can effectively solve the problems that: the product specification form is single, several impurity elements are difficult to remove and the consistency is low, reduces the production cost, saves the energy, realizes the diversification of product forms, optimizes the physical property, improves the product quality and fully meets the use requirement of various downstream customers.

The present invention relates to a magnetron sputtering device including a large ring cathode having a defined inner radius. The position of the ring cathode is offset in relation to a center point of a planetary drive system. An anode or reactive gas source may be located within the inner radius of the ring cathode. Lower defect rates are obtained through the lower power density at the cathode which suppresses arcing, while runoff is minimized by the cathode to planet geometry without the use of a mask.

The invention discloses a preparation method of a silane-cerium oxide-hydrotalcite composite coating on the surface of a magnesium/magnesium alloy matrix. The preparation method comprises four steps, including preparation of a hydrotalcite precursor, pretreatment of magnesium alloy, preparation of a hydrotalcite coating and preparation of a composite coating; and main chemical raw materials adopted in the preparation method include absolute ethyl alcohol, a silane coupling agent, ultrapure water and cerium salt, wherein the cerium salt is water-soluble salt. The technical route of the preparation method comprises the following steps: firstly depositing a layer of a hydrotalcite film (the chemical ingredient is Mg6Al2(OH)16CO3.4H2O) on the surface of the magnesium or magnesium alloy matrix by adopting a hydro-thermal synthesis method; and subsequently soaking a sample into a mixed solution of the silane coupling agent and the cerium salt so as to accomplish the preparation of the composite coating. The preparation method disclosed by the invention has the technical characteristics that the process is environmentally friendly and controlled simply and easily; the prepared composite coating is compact in structure, high in adhesive force, good in corrosion resistance and long in service life, and the like; and the composite coating is especially applicable to preservative treatment of a material applied to a magnesium alloy structure of maritime machinery equipment.

The present invention relates to a process of fabricating P(VDF-TrFE) films by modifying the solvent composition. Two solvents MEK and DMSO were mixed in pre-determined ratios and that co-solvent mixture was used for fabricating the P(VDF-TrFE) films. By virtue of such method driven P(VDF-TrFE) films, the ferroelectric capacitors comprising of the same were found to achieve low voltage operation, thermal stability and fatigue endurance, which indicated improved ferroelectric performance of the devices. In addition, the films made by same process also yielded high piezo- and pyro-electric coefficient, indicating improved piezo- and pyro-electric performances of the devices.

The present invention relates to the field of automotive heat exchanger assemblies, and, in particular, assemblies with cores with headers and end tanks and/or male and female connections. The present invention also relates to a method of making a positive leak path to determine leaks prior to employment of heat exchanger assembles. The present invention further relates to a method of determining whether or not a leak seal is temporary by providing a positive leak path at the point of assembly or initial evaluation or testing a heat exchanger.

In a thin film transistor, a first insulating film on a silicon layer formed in an island on a substrate is smaller in thickness than the silicon layer so that the stepped island edges is gentle in slope to facilitate covering the island with a second insulating film. This reduces occurrence of gate leak considerably. Since the peripheral region of the stepped island is smaller in thickness than the central region above the channel, it is possible to minimize occurrence of gate electrode breakage. The silicon layer contains two or more inert gas atoms, and the atoms smaller in mass number (e.g., He) are contained in and near an interface with a silicon active layer while the atoms larger in mass number (e.g., Ar) than those smaller in mass number are contained in and near a second interface with a gate electrode.

A method for manufacturing a thin film transistor having high electric characteristics with high productivity. In the method for forming a channel region of a dual-gate thin film transistor including a first gate electrode and a second gate electrode which faces the first gate electrode with the channel region provided therebetween, a first microcrystalline semiconductor film is formed under a first condition for forming a microcrystalline semiconductor film in which a space between crystal grains is filled with an amorphous semiconductor, and a second microcrystalline semiconductor film is formed over the first microcrystalline semiconductor film under a second condition for promoting crystal growth.

A positive resist composition includes a resin component (A) that exhibits increased alkali solubility under the action of acid, and an acid generator component (B) that generates acid upon exposure, wherein the resin component (A) is a mixture of a copolymer (A1) that includes a structural unit (a1) derived from an acrylate ester that contains an acid-dissociable, dissolution-inhibiting group, a structural unit (a2) derived from a methacrylate ester that contains a lactone-containing monocyclic group, and a structural unit (a3) derived from an acrylate ester that contains a polar group-containing polycyclic group, and a copolymer (A2) that has a different structure from the copolymer (A1) and has a lower hydrophilicity than the copolymer (A1).