摘要:
A blower beater mill for grinding and drying, in which a rotor has a beater portion located on a mill shaft and a fan impeller. Beater arms of the beater portion are fastened between hub rings of the mill shaft. The shaft is, furthermore, water-cooled along its longitudinal axis, and shaft cams of the hub rings are enclosed at a distance by an outside jacket having cutouts for passage of the beater arms. The space between the outer jacket and the shaft cams of the hub rings may be filled with insulating material. The shaft cams of the hub rings may have also a heat-reflecting coating. The width of the cutouts may be greater than the width of the beater arms by the amount of maximum axial expansion of the outer jacket relative to the mill shaft. The outer jacket, moreover, is restricted to the portion of the beater part located underneath the mill intake, and reaches to the first row of the beater arms. The beater arms have bases filling the space between two hub rings, and the distance between two adjacent beater arms bases of a beater arm row in the peripheral direction, is at most 0.3 times the distance between two hub rings.
摘要:
A substrate treating method comprising a step of preparing a semiconductor substrate (W, 11) which has an oxide film (13, 14) containing at least one of a rare earth oxide and an alkaline earth oxide, at least a portion of the oxide film (13, 14) being exposed, and a rinse step of supplying the oxide film (13, 14) on the semiconductor substrate (W, 11) with a rinse liquid made of an alkaline chemical or an organic solvent. Preferably, the alkaline chemical is an alkaline aqueous solution having a pH of more than 7. Further, preferably, the organic solvent is a high concentration organic solvent having a concentration of substantially 100%.
摘要:
Methods and apparatuses for cleaning a surface of a substrate are presented. The method comprises positioning a substrate at a controllable distance from a piezoelectric transducer, supplying a cleaning liquid between the substrate and the transducer, applying an oscillating acoustic force to the cleaning liquid by actuating the transducer, and moving the transducer relative to the substrate. The method further comprises, while moving the transducer relative to the substrate, measuring a value that indicates a distance between a surface of the substrate and the transducer, comparing the measured value to a desired value, and adjusting the distance between the surface and the transducer so that the measured value is maintained substantially equal to the desired value. The measured value may be the distance between the surface of the substrate and the transducer or a phase shift between an alternating current and voltage applied to the transducer.
摘要:
A substrate treating method comprising a step of preparing a semiconductor substrate (W, 11) which has an oxide film (13, 14) containing at least one of a rare earth oxide and an alkaline earth oxide, at least a portion of the oxide film (13, 14) being exposed, and a rinse step of supplying the oxide film (13, 14) on the semiconductor substrate (W, 11) with a rinse liquid made of an alkaline chemical or an organic solvent. Preferably, the alkaline chemical is an alkaline aqueous solution having a pH of more than 7. Further, preferably, the organic solvent is a high concentration organic solvent having a concentration of substantially 100%.
摘要:
A method and apparatus for immersion lithography is described. The method includes positioning a semiconductor substrate under an optical immersion head assembly, providing an immersion liquid between the substrate and the optical immersion head assembly, and supplying a tensio-active gaseous substance along the perimeter of the contact area of the immersion liquid and the substrate. The immersion liquid contacts at least an area of the substrate. The tensio-active gaseous substance is chosen such that, when at least partially mixed with the immersion liquid, the mixture has a lower surface tension than the immersion liquid, thereby creating a surface tension gradient pulling the immersion liquid from the perimeter towards an inside portion of the contact area.
摘要:
The present invention is related to a method and apparatus for liquid treating and drying a substrate, such as a semiconductor wafer, the method comprising the step of immersing a substrate or a batch of substrates in a tank filled with a liquid, and removing the substrate(s) through an opening so that a flow of the liquid takes place through the opening during removal of the substrate. Simultaneously with the removal, a reduction of the surface tension of the liquid is caused to take place near the intersection line between the liquid and the substrate. For acquiring such a tensio-active effect, a uniform flow of a gas or vapor is used, or/and a local application of heat. The invention is equally related to an apparatus for performing the method of the invention.
摘要:
An apparatus for wet cleaning or etching of flat substrates comprising a tank with an inlet opening and outlet opening for said substrates. Said tank contains a cleaning liquid and is installed in a gaseous environment. At least one of the openings is a slice in a sidewall of the tank and is present below the liquid-surface. In the tank there may be a portion above the liquid filled with a gas with a pressure being lower than the pressure within said environment. The method comprises the step of transferring a substrate through the cleaning or etching liquid at a level underneath the surface of said liquid making use of said apparatus.
摘要:
The present invention is related to a method and apparatus for cleaning a substrate, in particular a semiconductor substrate such as a silicon wafer. The substrate is placed in a tank containing a cleaning liquid, at an angle with respect to acoustic waves produced in said liquid. The angle corresponds to the angle of transmission, i.e. the angle at which waves are not reflected off the substrate surface. A damping material is provided in the tank, arranged to absorb substantially all waves thus transmitted through the substrate. A significant improvement in terms of cleaning efficiency is obtained by the method of the invention.
摘要:
Disclosed is a method for performing a physical force-assisted cleaning process on a patterned surface of a substrate, including providing a substrate having at least one patterned surface, supplying a cleaning liquid to the patterned surface, and applying a physical force to the cleaning liquid in contact with the patterned surface, whereby the physical force leads to bubble formation in the cleaning liquid. Furthermore, and prior to applying the physical force, an additive is supplied to the surface, and the additive is maintained in contact with the surface for a given time, the additive and the time being chosen so that a substantially complete wetting of the surface by the cleaning liquid is achieved.
摘要:
The present invention is related to a method and apparatus for cleaning a semiconductor substrate including on a surface of the substrate at least one structure comprising a first conducting or semiconducting material, surrounded by a layer of a second conducting or semiconducting material, said layer essentially extending over the totality of said surface, the first and second material being in physical contact, the method comprising the steps of: providing the substrate, positioning a counter-electrode facing the substrate surface, and supplying an electrolytic fluid to the space between the surface and the electrode, the counter-electrode acting as an anode in the galvanic cell defined by the substrate surface, the cleaning fluid and the counter-electrode.