40results about How to "Avoid polishing" patented technology

A method for planarizing a layer of a semiconductor device includes heating the layer to exhibit flowability, and applying pressure through an optically flat surface layer onto the layer to planarize the layer. And the planarizing method further comprises etch-back or chemical-mechanical polishing on the planarized layer.

A polishing composition of the present invention contains a water-soluble polymer and abrasive grains. The water-soluble polymer is an anionic compound having an acid dissociation constant pKa of 3 or less. Specific examples of such a compound include polyvinylsulfonic acid, polystyrenesulfonic acid, polyallylsulfonic acid, polyethyl acrylate sulfonic acid, polybutyl acrylate sulfonic acid, poly(2-acrylamide-2-methylpropanesulfonic acid), and polyisoprenesulfonic acid. The abrasive grains exhibit a negative zeta potential at a pH of 3.5 or less. Specific examples of such abrasive grains include colloidal silica.

The invention relates to a method for displaying the metallurgical structure of ultralow-carbon cold roll annealed interstitial-free steel, which belongs to the technical field of physical detection. The invention is used for realizing the aims of clear display and easy operation of the metallurgical structure of ultralow-carbon cold roll annealed interstitial-free steel. The method comprises the following steps: a. coarse grinding; b. polishing; c. erosion by a first reagent: eroding the polished sample in the first reagent for 10-20 seconds, wherein the first reagent is 5.5-6.5% nitric acid alcohol; d. erosion by a second reagent: eroding the sample in the second reagent immediately after taking out the sample from the first reagent, until the sample surface is evenly black, wherein the second reagent is prepared from 3-7g of sodium pyrosulfite, 9-12g of anhydrous sodium thiosulfate and 70-100ml of distilled water; and e. sample detection: wiping the sample with the first reagent to remove black on the surface, rinsing with alcohol, and blow-drying so that people can observe the sample. The method has the advantages of simpleness, simplified steps, easy master, resource conservation and high efficiency; the obtained structure has the advantages of clear grain boundary and no double grain boundary, and can properly reflect the annealing situation; and thus, the method is very suitable for field usage, and performs important functions on reasonably controlling technological parameters and ensuring product performance in the production field.

A method comprises a first multilayer body forming step of forming a first multilayer body on a first cladding layer, the first multilayer body including a core layer and a first polishing stop layer in order from the first cladding layer side; a first multilayer body patterning step of pattering the first multilayer body, so as to expose the first cladding layer about the patterned first multilayer body; a second multilayer body forming step of forming a second multilayer body on the exposed first cladding layer and patterned first multilayer body, the second multilayer body including a second cladding layer and a second polishing stop layer in order from the first cladding layer side; and a removing step of polishing away a part of the second multilayer body formed on the first multilayer body.

The invention discloses an LED ceramic support polishing and grinding machine, and belongs to the technical field of ceramic support polishing and grinding. The LED ceramic support polishing and grinding machine comprises a box base, wherein two supports are arranged on the front side and the rear side of the top of the box base; a supporting plate is arranged between the tops of the two supports;a motor cover is arranged on the top of the supporting plate; a polishing motor is arranged in a cavity of the motor cover; a polishing motor shaft is arranged at a bottom output end of the polishingmotor; the polishing motor shaft penetrates through the supporting plate and is connected with a polishing grinding wheel plate; gears on the left side and the right side are connected through a chain; adjustable supporting platform is arranged in the middle of the top of the box base; a water pump is arranged on the bottom of the cavity of the box base and is connected with a water spraying goose neck pipe; and the water spraying goose neck pipe penetrates through the box base and extends to the left side of the polishing grinding wheel plate. The device is simple in working principle and high in applicability, and meets polishing and grinding of ceramic supports with various sizes.

The invention relates to a polishing device for an arc-shaped slot array antenna mounting plate. The polishing device is characterized in that each conveying mechanism comprises a pair of parallel conveying wheels used for conveying the antenna mounting plate, the distance between the conveying wheels is adjustable, the conveying wheels are connected with driving motors, and multiple sets of conveying mechanisms are arranged; at least one set of inner cambered surface polishing mechanisms are arranged, each inner cambered surface polishing mechanism comprises a portal frame and a rotating part, a plurality of polishing brushes are uniformly arranged on each rotating part along the circumference, and the distance between the head of each polishing brush and a rotating shaft of the corresponding rotating part is adjustable; and at least one set of outer cambered surface polishing mechanisms are located between the conveying mechanisms, at least one set of conveying mechanisms are arranged between the inner cambered surface polishing mechanisms and the outer cambered surface polishing mechanisms, each outer cambered surface polishing mechanism comprises an outer ring base and an innerring coaxially and rotationally arranged in the outer ring base, a lifting mechanism is arranged at the bottom of each outer ring base, a plurality of polishing brushes are evenly arranged on the inner wall of each inner ring in the circumferential direction, and the positions of the polishing brushes in the normal direction of the corresponding inner ring are adjustable. According to the polishing device, mounting plates of different thicknesses and different structures can be polished, and the polishing efficiency is high.

A method is provided for eliminating a polish stop layer from a polishing process. In particular, a method is provided which may include polishing an upper layer of a semiconductor topography to form an upper surface at an elevation above an underlying layer, wherein the upper surface does not include a polish stop material. Preferably, the upper surface of the topography formed by polishing is spaced sufficiently above the underlying layer to avoid polishing the underlying layer. The entirety of the upper surface may be simultaneously etched to expose the underlying layer. In an embodiment, the underlying layer may comprise a lateral variation in polish characteristics. The method may include using fixed abrasive polishing of a dielectric layer for reducing a required thickness of an additional layer underlying the dielectric layer. Such a method may be useful when exposing an underlying layer is desirable by techniques other than polishing.

The invention discloses a preparation method of a marbleized quartzite plate. The preparation method comprises the following steps of 1, style design, wherein colors of a plate main body in the quartzite plate and colors and textures of marbling are designed; 2, mold preparation, wherein a texture mold and a quartzite plate mold are prepared; 3, material preparation, wherein a marbling mixture anda plate main body mixture are prepared; 4, texture laying, wherein the texture mold is put into the quartzite plate mold, and the marbling mixture is laid into the texture mold; 5, main body laying,wherein the texture mold is taken out, and the plate main body mixture is laid into the quartzite plate mold to remove other portions of the marbling mixture; and 6, mold pressing, wherein after the surface is scraped to be level, the quartzite plate mold with materials laid therein is pressurized, heated and cured to be molded, so that the marbleized quartzite plate is obtained. A product obtained through the preparation method of the marbleized quartzite plate is stable and excellent in quality.

The invention provides a preparation method for a substrate with a charge trap and an insulation buried layer, comprising the following steps: providing a support substrate; forming a polycrystal layer on the surface of the support substrate to be used as the charge trap; forming a covering layer on the surface of the polycrystal layer, wherein the covering layer is non-crystal insulation material; polishing the surface of the covering layer; and taking the polished surface as a bonding surface, and bonding with a device substrate. The preparation method for the substrate has the advantages that: the non-crystal insulation covering layer is adopted as the bonding surface, so that direct polishing and bonding on the polycrystal layer are avoided, and the difficulty in polishing and bonding is lowered.

The method for fabricating the magnetic head comprises the step of forming over a lower electrode a magnetoresistive effect film 16 with a polishing resistant film 20 formed over the upper surface, the step of forming a magnetic domain control film 24 over the entire surface of the lower electrode 12 including a region where the magnetoresistive effect film 16 has been formed, the step of selectively removing the magnetic domain control film 24 over the magnetoresistive effect film 16 by polishing with the polishing resistant film 20 as the stopper, the step of removing the polishing resistant film 20, and the step of forming an upper electrode 34 over the magnetoresistive effect film 16, from which the polishing resistant film 20 has been removed.

The invention discloses a square timber machining surface polishing device. The device comprises a frame body, a first grinding mechanism, a second grinding mechanism and a material table; the first grinding mechanism is arranged on one side of the interior of the frame body; the material table is arranged at the top of the frame body; a receding groove is formed in the middle of the upper surfaceof the material table; a material pressing assembly is arranged above the receding groove; and the second grinding mechanism located below the material pressing assembly is arranged on the surface ofthe front end of the material table. According to the square timber machining surface polishing device of the invention, the four side faces of square timber can be ground at the same time through adjusting rollers and driving rollers arranged in the first grinding mechanism and the second grinding mechanism; polishing machining can be completed with one-time feeding of the square timber; the machining efficiency of the device is improved; and the condition that the square timber is overturned many times for polishing treatment is avoided. An adjusting handle can be rotated, so that an adjusting plate connected through an adjusting screw can be driven to move along a second linear guide rail pair, so that square timber of different sizes can be polished within a certain range, and therefore, the applicability of the device is improved.

The invention relates to a polishing device for a motor shaft. A left positioning block and a right positioning block are arranged on a base; a left positioning hole and a right positioning hole are respectively opened on the left positioning block and the right positioning block, and the above two positioning holes are located at On the same axis; one side of the left positioning block is provided with a motor on the motor base; one side of the motor shaft is provided with a left cylindrical block located in the left positioning hole, and the left cylindrical block has a receiving groove; the right positioning block There is a fixed cylinder in the hole, and the inner diameter of the fixed cylinder is the same as the diameter of the motor shaft; the materials of the left cylindrical block and the fixed cylinder are electromagnets; there is a telescopic cylinder on the side of the right positioning block; There is an electromagnet block inside; a slidable substrate is provided between the left positioning block and the right positioning block; a polishing assembly that can be lifted up and down is provided on the substrate. , save labor, improve polishing efficiency and polishing quality.

The present invention relates to a polishing slurry composition for an STI process and, more particularly, to a polishing slurry composition for an STI process, the composition comprising: a polishing solution including polishing particles; and an additive solution containing a polysilicon film polishing barrier inclusive of a polymer having an amide bond.

The invention discloses a polishing machine and a polishing technology. The polishing machine comprises a rack. The rack is provided with a clamp and a polishing shaft. The clamp can move in the Y direction. The rack is provided with an X-direction moving assembly. The X-direction moving assembly is provided with a Z-direction moving assembly. The Z-direction moving assembly is provided with a Z-direction rotating assembly. The Z-direction rotating assembly is provided with a horizontal moving assembly. The horizontal moving assembly is provided with a swing assembly. The swing direction of the swing assembly is perpendicular to the horizontal moving direction of the horizontal moving assembly. The swing assembly comprises a first frame body connected with the horizontal moving assembly and a second frame body rotationally connected with the first frame body, the first frame body is provided with a first motor driving the second frame body to swing and adjust, and the second frame bodyis connected with the polishing shaft. The second frame body is provided with a second motor driving the polishing shaft to rotate. The polishing shaft is arranged above the clamp, the axis directionof the polishing shaft is arranged in the up-down direction, and the polishing shaft is sleeved with a polishing wheel. By means of the polishing machine and the polishing technology, eccentric wearof the polishing wheel can be reduced, and the polishing quality is ensured.

The invention discloses a trimming device and a wafer polishing system.The trimming device comprises a mounting frame, a lifting mechanism and a detection piece, the lifting mechanism is provided with a lifting driving piece, the mounting end of the lifting driving piece is connected with the mounting frame, and the driving end of the lifting driving piece is suitable for being connected with a grinding head; the lifting driving piece has a grinding state for driving the grinding head to be close to or away from the polishing pad; the detection piece is suitable for forming position information according to the detected displacement distance of the grinding head, the lifting driving piece drives the grinding head to move towards the polishing pad until the polishing pad abuts against the grinding head, the abrasion degree of the polishing pad is increased along with grinding and polishing work, and the lifting driving piece drives the grinding head to abut against the polishing pad all the time. A worker can accurately judge the abrasion degree of the polishing pad according to the displacement distance change detected by the detection piece, so that the polishing pad is replaced in time, and the situation that the polishing pad which is excessively abraded is used for polishing a wafer is avoided.

The invention relates to a novel electromagnetic rheological fluid piston assembly, which is composed of an upper magnet conductor, a lower magnet conductor, a magnet conductor baffle plate, an electromagnetic solenoid, and a piston rod. The piston rod passes through the central channel of the upper magnetizer, the magnetizer baffle and the lower magnetizer respectively, and the head of the piston rod passing part is covered with a magnetic isolation sleeve, and at the same time, the upper magnetizer, the magnetizer baffle, and the lower There are two magnetic isolation sleeves between the magnetic conductor and the electromagnetic solenoid, and the magnetic isolation fastener located at the head of the piston rod connects the upper magnetic conductor, the magnetic conductor baffle plate, the lower magnetic conductor, the electromagnetic solenoid and the two magnetic conductors through the piston rod. A magnetic isolation sleeve is tightly connected.