1174 results about "Narrow gap" patented technology

A method for depositing a film by plasma-enhanced subatmospheric-pressure atomic layer deposition (subatmospheric PEALD) is conducted using capacitively coupled parallel plate electrodes with a gap of 1 mm to 5 mm, wherein one cycle of subatmospheric PEALD includes: supplying a precursor in a pulse to the reaction chamber; continuously supplying a reactant to the reaction chamber; continuously supplying an inert gas to the reaction chamber; continuously controlling a pressure of the reaction chamber in a range of 15 kPa to 80 kPa; and applying RF power for glow discharge in a pulse to one of the parallel plate electrodes.

A packaging method comprises: forming a circuit board by forming a substantially continuous conductive layer on an insulating board and removing selected portions of the continuous conductive layer to define an electrically conductive trace; laser cutting the electrically conductive trace to define sub-traces electrically isolated from each other by a laser-cut gap formed by the laser cutting; and bonding a light emitting diode (LED) chip to the circuit board across or adjacent to the laser-cut gap, the bonding including operatively electrically connecting an electrode of the LED chip to one of the sub-traces without using an interposed submount. A semiconductor package comprises an LED chip flip-chip bonded to sub-traces of an electrically conductive trace of a circuit board, the sub-traces being electrically isolated from each other by a narrow gap of less than or about 100 microns.

The invention relates to gapfill of variable aspect ratio features with a composite PEALD and PECVD method, and specifically provides methods and apparatus for filling one or more gaps on a semiconductor substrate. The disclosed embodiments are especially useful for forming seam-free, void-free fill in both narrow and wide features. The methods may be performed without any intervening etching operations to achieve a single step deposition. In various implementations, a first operation is performed using a novel PEALD fill mechanism to fill narrow gaps and line wide gaps. A second operation may be performed using PECVD methods to continue filling the wide gaps.

For a mobile fuel cell system a narrow-gap modular approach allows reforming to be performed in the same architecture as the fuel cell. A regenerative fuel cell operates much like a battery using electrical power to produce hydrogen and oxygen. The preferred mode of using the regenerative fuel cell is as a battery charger since this application is able to use a much smaller fuel cell than is required to power the vehicle. A novel equilibrating tank between the electrolysis oxygen and hydrogen tanks allows pressurized oxygen and hydrogen to be used without mechanical compression equipment.

Embodiments of the invention are directed to apparatus, methods, and applications involving the actuation of a semi-insulative working fluid by electromechanical forces based on electrowetting-on-dielectric (EWOD) and liquid dielectrophoresis (liquid DEP) mechanisms that are controlled by the frequency, but not the magnitude, of an AC voltage (i.e., ‘frequency-addressable). In the various apparatus embodiments of the invention, a single, frequency-addressable electrode pair includes at least one electrode that has a spatially-varying dielectric coating thickness and thus a spatially-varying electrode gap wherein at least a portion of which a volume of a working fluid can stably reside under no influence of an applied voltage. In an exemplary aspect, a frequency-addressable, bistable apparatus includes at least one wider gap and one narrower gap associated, respectively, with a thicker and a thinner dielectric coating thickness of the electrode(s). The working fluid resides in only one of the at least two gap regions only under the influence of capillary force. A brief burst of AC voltage at a selected high frequency or low frequency will move the liquid from one gap region to another (and back) by one of an EWOD-based and a DEP-based force. In an alternative aspect, an analog apparatus has a continuous, spatially-varying electrode gap in which the dielectric coating thickness on the electrodes varies smoothly in an inverse manner. Various applications to a display device, fiber optic coupler and attenuator, controlled liquid volume dispensers, spotting arrays, well plate apparatus, and others are presented, along with control methods.

The automatic argon arc welding and narrow gas submerged arc welding process for circular pipe header seam features the first horizontal and vertical welding with immobile workpiece and using automatic cold welding TIG wire until completing over one third of circle; the subsequent welding in the other two thirds of circle with automatically rotating welding roller frame; and the performing in the identical site of the annular seam assembling and the welding. The welding apparatus for the said technological process consists of roller device and welding frame bogie, and the welding frame bogie on some tracks parallel to roller frame tracks is movable. The present invention has the advantages of automatic operation, raised welding quality, etc.

The invention provides a method of pattering a substrate, in which a first material in solution is deposited on the substrate. The composition of the solution of the first material is selected so it dries to leave a residue of the first material on the substrate, the residue comprising a thin film in the centre and a ridge around the perimeter. The residue is etched to remove the thin film, leaving the ridge on the substrate. After etching the ridge is hydrophobic and the substrate is hydrophilic. An aqueous solution of a second material is then deposited on both sides of the ridge. After the aqueous solution has dried, the ridge is removed, leaving a layer of the second material on the substrate, the layer having a narrow gap therethrough. The layer may be used for the source and drain electrodes of an organic thin film transistor.

Provided is a cutting method for a glass sheet, comprising radiating a laser beam to a cutting portion (C) of a glass sheet (G) having a thickness of 500 μm or less to fuse the glass sheet (G), wherein a narrowest gap between fused end surfaces (Ga1 and Gb1) of the glass sheet (G), which face each other in the cutting portion (C), is managed to satisfy a relationship of 0.1≦b/a≦2, where “a” is a thickness of the glass sheet (G) and “b” is the narrowest gap.

The invention discloses a scanning type laser vision sensing-based narrow-gap deep-groove automatic laser multilayer welding method for a thick plate, relates to a welding method, and aims to solve the problems that the conventional structured light vision sensing-based welding method can only be used for a simple shallow-groove laser weld seam tracking task and that when the conventional structured light vision sensing-based welding method is used for the narrow-gap deep-groove weld seam welding of the thick plate, a covering phenomenon is easily produced, the groove identification accuracy is lower, only real-time weld seam alignment calibration can be realized and narrow-gap deep-groove laser multilayer welding bead planning and welding cannot be realized. The method specifically comprises the following steps of: 1, selecting a groove form; 2, scanning a groove section image of a thick plate workpiece to be welded by using an image scanning unit; 3, processing the acquired groove section image by using an image algorithm to obtain weld seam image data; 4, performing fitting calculation; and 5, finishing the welding of welding beads layer by layer. The method is used for the deep-groove weld seam welding of the thick plate.

A method and system for automatically filing the narrow gap between facing end walls of adjacent first and second railway rails by depositing vertically spaced layers of molten metal in the gap with an electric arc welding torch using a robotic mechanism that moves the torch in a pattern controlled by a low level robotic execute program from a spatial position to a next spatial position, said method and system comprising: constructing a data array for a specific gap, said array constituting a series of positions making up an idealized progression of said torch to fill said gaps in vertically spaced layers made up of multiple positions, each of said fixed positions identified by at least four coordinates, including (1) at least x, y and z, (2) the layer in which said position is a part and (3) the welding parameters to be executed while said torch moves toward the next position; outputting data relating to a specific position from said data array; processing said welding parameters associated with said outputted data using said robotic execute program; then, outputting the new fixed data relating to the next position in said series of points; processing said welding parameters associated with said new data using said robotic execute program; and, repeating said outputting and processing acts until said positions in said data array relating to a specific layer have been processed. Thereafter the method or system repeats the layer or processes the next layer comprising multiple stored positions.

The invention aims at disclosing a multi-frequency-band rear metal cover mobile phone antenna which comprises a mobile phone rear metal cover, a printed circuit board and an antenna bracket, wherein the antenna bracket is positioned between the mobile phone rear metal cover and the printed circuit board; the mobile phone rear metal cover comprises a first rear metal cover and a second rear metal cover which are positioned on a same plane; a narrow gap is formed between the first rear metal cover and the second rear metal cover; the first rear metal cover is connected with an antenna part of the antenna bracket; the second rear metal cover is connected with a ground phase of the printed circuit board; a radio-frequency line of the printed circuit board is connected with the first rear metal cover; and the first rear metal cover and the ground phase of the printed circuit board are mutually connected. Compared with the prior art, the multi-frequency-band rear metal cover mobile phone antenna disclosed by the invention has the advantages that the antenna can effectively radiate or receive an electromagnetic signal in a way that the first rear metal cover of the rear metal cover is taken as a high-frequency or low-frequency radiating body of the antenna and other parts are arranged on the antenna bracket, thereby overcoming the defects of the prior art and realizing the purpose.

The invention discloses a rocking arc narrow gap consumable electrode gas shielded welding method and a welding torch. The method comprises the following steps: a connecting cable is fixed on an electric brush mechanism and a coupling head; a hollow shaft motor is connected with a straight conducting rod through a shaft joint; a welding wire passes through a center hole of a cable coupling head, and penetrates out a center hole of a current contact nozzle; the lower end of the straight conducting rod is fixed with a connecting piece; and one end of a minor bend conducting rod is connected with the straight conducting rod through the connecting piece, while the other end of the minor bend conducting rod is connected with the current contact nozzle. The hollow shaft motor directly drives the straight conducting rod and the minor bend conducting rod capable of extending into a divided edge of a workpiece to make reciprocating rotation around the central axial line of the welding torch, thereby driving electric arc of the end of the welding wire send from the center hole of the current contact nozzle to make arc rocking in the divided edge of the workpiece so as to realize rocking arc narrow gap welding. The welding torch has the advantages of simple and compact structure, low implementation cost, high reliability of operation, strong practicality, and can adapt requirement of welding process for mean position and spatial position with different welding seams. The welding wire has strong rocking regulation, good directivity of the electric arc, and high welding quality.

An object of this invention is to provide a cleaner for the removal of water-soluble, lead-free soldering flux, the cleaner capable of cleaning off, in a short period of time, water-soluble flux residues generated during soldering with lead-free solder using water-soluble flux, the cleaner further having excellent dissolution property as well as excellent narrow gap cleaning property. The cleaner for removing water-soluble, lead-free soldering flux of the present invention comprises 5 to 100 parts by weight of a glycol ether compound (A) per 100 parts by weight of water.

A spray cooling system for transverse thin-film evaporative spray cooling in a narrow gap which generally includes a framework, a cooling cavity, a plurality of atomizers oriented to transversely spray coolant across the electronic components to be cooled, and preferably a vapor recirculation system and a reduction in cross section from the inlet or spray side to the exit side.

A welding machine for welding in narrow gap by rotary arc is composed of a connector of welding electric cable, an electric motor unit with hollow shaft for feeding welding wire through it, an electric feeding unit of brush with close slide matching with the flange of electric conducting rod, a spray unit with eccentrical hole for generating the rotary arc at the front end of welding wire, and speed measuring unit consisting of raster and light coupler. Its straight nozzle can be inserted in the narrow gap to be welded.

A laser emitting head for irradiating a portion to be machined with laser beams outputted from a laser unit (624) incorporates an emitting head body having a light guide member (625) in the head for guiding the laser beams; a light converging lens (677) for converging the laser beams transmitted from the light guide member in the head; a reflecting mirror (678) for irradiating the portion to be machined with the converged laser beams; mirror rotating means (684) for holding the reflecting mirror to be rotative around the optical axis of the laser beam; distance-adjustment means (674) for adjusting the relative distance between the reflecting mirror and the converging lens; and moving means (665) for moving the reflecting mirror and the converging lens such that the relative distance is maintained so that the light guide member in the head. The converging lens and the reflecting mirror can be introduced/discharged with respect to a portion to be machined and formed in a narrow gap in an incore structure. As a result, a preventive-maintenance/repair operation using laser beams and arranged to be performed in a narrow gap in the incore structure can safely and efficiently be performed.

A perpendicular magnetic recording head includes a perpendicular writing pole and a longitudinal field generator which rotates the magnetization of the perpendicular recording media prior to writing, thereby facilitating magnetization switching. The longitudinal magnetic field may be provided by a narrowed gap between the trailing write pole and the leading return pole of the head. The gap structure is designed to provide a fringing magnetic field between the poles which generates the longitudinal magnetic field in perpendicular recording media as the media travels under the perpendicular writing pole.

The invention provides a method for laser-electric arc composite heat source precision welding with a narrow gap, which belongs to the technical field of precision welding, and solves the problem of high-quality narrow-gap precision welding technology for difficultly welded material which can not be directly welded through laser. The method mainly comprises the following steps: the composite heat source can adopt the form of a laser beam (3) in the front and electric arc (7) in the back, or the electric arc (7) in the front and the laser beam (3) in the back, and the laser filament spacing h is 0-3 mm; low power electric arc (7) with 200-1000W power and 10-50A current is adopted, the power of the matched laser beam is larger than or equal to 200W, the electric arc (7) enters a narrow-gap groove (1) of a work piece under the guidance and the compression of the laser beam (3), and is stably burnt in the groove, the width of the narrow-gap groove (1) is 0.2d-1.2d, and d is the diameter of the welding wire. The composite heat source welding method is mainly used for the precision welding with narrow-gap groove.