摘要:
A device for carrying a thin plate-like substrate such as a semiconductor wafer and controlling its position by floating it with an inert gas of low impurity concentration. A transferring unit and a controlling unit are respectively provided with gas nozzles for floating a thin plate-like substrate and with a gas exhausting and circulating system, and a plurality of them are in combination with each other in a sealing state. The controlling unit, further, has a vacuum suction hole at its controlling center, and is provided with nozzles for controlling the thin plate-like substrate in its radial and cirumferential direction respectively and with nozzles for stopping the thin plate-like substrate or sending out it to the next unit too. On the bottom face of a control space, grooves extending from the vacuum suction hole are formed for improving the positional accuracy of stopping the thin plate-like substrate, and they are closed on the insides of their circumferential parts when the center of the thin plate-like substrate has coincided with the controlling center of the controlling unit.
摘要:
The wafer transporter of the invention comprises a plurality of plane electrodes (1-1,...1-5) which are horizontally coplanar with each other. The plane electrodes (1-1,...1-5) face the wafer (6) to be transported. A plurality of air nozzles (7) are provided through the electrodes (1-1,...1-5), and air is blown off from the nozzles (7) perpendicularly toward the wafer (6) surface. A voltage is applied between the electrodes (1-1,...1-5) facing the wafer (6). The applied voltage is divided by the capacitances between the wafer (6) which is electrically conductive and the electrodes (1-1,...1-5), thus the wafer (6) is attracted vertically toward the electrode, but stays without friction at the balance of the repulsive force of the air blow and the attractive force. On the other hand, the divided voltages become unequal caused by the difference of the wafer's area facing respective electrodes (1-1,...1-5). This voltage difference produces a horizontally attractive force to move the wafer (6) in a horizontal direction. The wafer (6) is forced to stay at a balancing point where the induced voltages are equal. This is used to prevent the wafer (6) from deviating from the course. Successive switching of the voltage application to a next electrode in the direction of the wafer's move allow the wafer (6) to travel along the row of the electrodes (1-1,...1-5).
摘要:
Transporteur de tranches empilables dans des cassettes. Les tranches (1) sont au départ dans des cassettes (20) en peignes (21, 22). Le transporteur (5) s'insère entre les peignes (21, 22). Un coussin d'air oblique extrait les tranches (1) et les déplace vers la droite. Un orifice de succion (12) les plaque alors fermement contre la piste (6). Un coussin d'air dans l'autre sens permet de replacer les tranches (1) dans une autre cassette (20). Plusieurs pistes (6) horizontales sont superposées en hauteur.
摘要:
A method for transporting an article (5) disposed on an upper surface of a stage (6) in vacuum. Gas is ejected through a plurality of inclined nozzles (15) formed in the stage (6) so that the article (5) is transported in the direction of inclination of the nozzles.
摘要:
A track (14) for transporting objects such as semiconductor wafers on a bed of a gaseous fluid is provided making improved use of an axi-radial effect and a coanda effect. The track surface construction contains rows of air feed nozzles (20) separated by evacuating channels (26). The rows of holes (20) on each side of the center line (24) of the track are oriented such that the holes (20) in adjacent rows are spaced longitudinally along the track. The use of longitudinal spacing of the holes in adjacent rows reduces the number of holes necessary for the overall track configuration.
摘要:
A track (14) for transporting objects such as semiconductor wafers on a bed of a gaseous fluid is provided making improved use of an axi-radial effect and a coanda effect. The track surface construction contains rows of air feed nozzles (20) separated by evacuating channels (26). The rows of holes (20) on each side of the center line (24) of the track are oriented such that the holes (20) in adjacent rows are spaced longitudinally along the track. The use of longitudinal spacing of the holes in adjacent rows reduces the number of holes necessary for the overall track configuration.