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431results about How to "Uniform processing" patented technology

Method for improving uniformity of chemical-mechanical planarization process

The invention provides a method for improving uniformity of chemical-mechanical planarization process, comprising the steps of: forming features on a substrate; forming a first dielectric isolation layer between the features; planarizing the first dielectric isolation layer until the features are exposed, causing the first dielectric isolation layer between the features to have a recess depth; forming a second dielectric isolation layer on the features and the first dielectric isolation layer, whereby reducing the difference in height between the second dielectric isolation layer between the features and the second dielectric isolation layer on the top of the features; planarizing the second dielectric isolation layer until the features are exposed. According to the method for improving uniformity of chemical-mechanical planarization process of the invention, a dielectric isolation layer is formed again after grinding the dielectric isolation layer on the top of the features, such that the difference in height between the dielectric layer between the features and the dielectric layer on the top of the features is effectively reduced, and the recess of the features is compensated, the within-in-die uniformity is effectively improved.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

Movable stirring device of reaction kettle

The invention discloses a movable stirring device of a reaction kettle. The movable stirring device comprises a base plate, threaded support rods and an upper lifting cover; the base plate is provided with the threaded support rods, and a synchronous connecting belt is connected between the threaded support rods; the right side of the bottom plate is provided with a first motor; a threaded lifting block is arranged on the periphery of each threaded support rod, the upper lifting cover is arranged between the threaded lifting blocks, and the lower end of the upper lifting cover is provided with a sealing pad, a rotating shaft, a transmission gear, a transmission chain, a fixation piece and a rotating handle; the middle of the upper lifting cover is provided with a stirring shaft, the upper lifting cover is provided with a second motor and an air pump, and the stirring shaft is provided with a stirring fan blade rod, a rotating bearing, a rotating support block, a nozzle, a support pad block, a movable pad block and a rotating sleeve ring; a connecting air pipe is arranged between the air pump and the rotating sleeve ring, and the lower end of the base plate is provided with universal wheels. According to the movable stirring device of the reaction kettle, the upper cover which movably ascends and descends can be flexibly adjusted according to the size of the kettle body, the device is more convenient to use, and the stirring shaft and the stirring fan rod can conduct air injection during processing to promote stirring.
Owner:武晓丹

Building steel plate intermittent polishing device

InactiveCN108081094ANo shakingOne-way self-lockingGrinding machinesSheet steelGear wheel
The invention discloses a building steel plate intermittent polishing device. The middle of a guide rail is rotatably connected with the middle of a driving shaft, the guide rail is fixedly connectedwith the right wall of a device body, the lower end of the driving shaft is fixedly connected with a semi-circular bevel gear, the toothed part of the semi-circular bevel gear is engaged with bevel gears, the bevel gears are fixedly connected with a driven shaft, the left end of the driven shaft is fixedly connected with a semi-circular gear, and the toothed part of the semi-circular gear is engaged with a first gear; and the first gear is fixedly connected with a worm, the upper end of the worm is engaged with a worm wheel, the rear portion of the worm wheel is fixedly connected with a secondgear, and the second gear and the worm wheel are both rotatably connected with the device body. According to the building steel plate intermittent polishing device, the bevel gears at the left end and the right end are driven to rotate through the semi-circular bevel gear, further the driven shaft is driven to conduct reciprocating forward and reverse rotation, the toothed part of the semi-circular gear intermittently drives the first gear to conduct forward and reverse rotation so that the worm can be driven to conduct intermittent forward and reverse rotation, and thus reciprocating left-right intermittent moving of a working table can be achieved; and the structural design of the building steel plate intermittent polishing device is reasonable and applicable, the polishing efficiency of a building steel plate is greatly improved, machining of all the parts of the steel plate is even, and the polishing effect is excellent.
Owner:ZHENGZHOU GERUITA ELECTRONICS INFORMATION TECH CO LTD
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