Abstract: To generate a gas-curtain for a load-port-apparatus and to supply a purge-gas into a pod by a single gas source, provided is a gas purge device including: purge nozzles extending along an outer side of side edges of the opening portion; a curtain nozzle arranged above an upper edge of the opening portion; a gas supply pipe arranged in parallel to each purge nozzle, for supplying an inert gas to the purge nozzle and the curtain nozzle, the gas being supplied from the gas supply pipe to the purge nozzle in a direction orthogonal to an extending direction of the gas supply pipe; and a conductance adjusting unit arranged at an end portion of the gas supply pipe, for generating a pressure loss in a gas flow in a configuration in which the gas is supplied to the curtain nozzle at the end portion of the gas supply pipe.

Abstract: To prevent an inert gas from stagnating in an internal space of a mount base of a load port apparatus, the load port apparatus includes: an outside air supply device for introducing an air from an external space, in which an operator works, into the internal space of the mount base; a casing surrounding a space in which a drive mechanism for a door is arranged; and a duct through which a gas inside the internal space of the casing is dischargeable.

Abstract: In a pod used in an FIMS system, an engaged portion is provided on the outer surface of the lid of a pod. A through hole is provided in a flange portion that is provided around the pod opening and in which the lid is to be received. The through-hole allows access to the engaged portion from the external space. A latch mechanism is supported on the pod body side surface of the flange portion in such a way that it can slide in a direction parallel to the side wall of the flange. The engagement portion of the latch mechanism reaches the engaged portion through the aforementioned through-hole. Movement of the latch mechanism brings the engagement portion into an engaging state and a disengaged state.

Abstract: Provided is a method of detecting whether or not a lid is fixed to a pod appropriately when performing an operation of closing an opening of the pod by the lid in an FIMS system. Determination is made whether or not a door is present at a predetermined position when the lid is attached to the pod and whether or not the pod is displaced from a position of opening/closing the lid, and determination is made again, after the lid engages with the pod, whether or not the door is present at the predetermined position and whether or not the pod is displaced from the position of opening/closing the lid. When it is confirmed in both the determinations that the door is present at the predetermined position and the pod is not displaced, determination that fixation of the lid is appropriate is made.

Abstract: A transfer chamber is partitioned into a second chamber in which a transfer robot moving through an opening portion which can be opened/closed by a door is arranged, and a minute first chamber which serves as a FIMS system and includes a door capable of retaining a lid of a pod. The second chamber maintains a state in which an inert gas constantly circulates owing to minute nitrogen while having a pressure higher than that inside the first chamber. The first chamber is normally sealed while an oxide gas is suppressed in advance. In addition, at a time of transferring wafers, a partial pressure of the oxide gas is lowered with use of a downflow which is caused by the inert gas. Further, the first chamber and the second chamber are communicated with each other after a level of the partial pressure is confirmed with use of an oxygen level meter.

Abstract: To prevent an overload from being imposed on a door drive mechanism when driving a door increased in weight due to upsizing so that reproducibility of a stop position of the door can be ensured, provided is a load port apparatus in which the door drive mechanism for driving the door in a direction perpendicular to an opening-portion forming plane is constituted by: a rotary cylinder capable of pivoting a cam follower from an angle of 0° to an angle of 180°; and a slider including a cam groove capable of housing the cam follower within a plane perpendicular to a rotational axis of the rotary cylinder, the cam groove extending in a vertical direction, and in which the door is supported by the slider.

Abstract: Provided is a load port apparatus having a structure capable of resisting against a moment generated at a time of driving of a door increased in weight owing to upsizing. A pair of rectangular main bases, which project perpendicularly to an attachment surface of the load port apparatus and elongated parallel to the attachment surface, are coupled to each other with a coupling shaft, and the structural body including those components is fixed to the attachment surface through intermediation of I-shaped plates capable of being held in close surface contact with the attachment surface. Mechanisms of a door drive mechanism, a placing table, and the like are arranged on an inner side between the pair of main bases of the structural body.

Abstract: A so-called transfer chamber in a semiconductor processing apparatus in which an FIMS system is secured is separated into a second chamber in which a transfer robot is disposed and a first chamber that is minute and includes a door capable of holding a cap of a pod as the FIMS system. In the second chamber, higher pressure than in the first chamber is maintained by a minute amount of nitrogen. In the first chamber, usually, a down flow of clean air is used via the FFU. When the wafer is transferred, a down flow of nitrogen is used. Thus, oxidation gas in the transfer chamber and released substances caused the FFU can be decreased.

Abstract: A seal member has a configuration including a ring-shaped main body portion, an inner peripheral lip portion protruding from a ring inner peripheral portion of the main body portion and an outer peripheral lip portion protruding from a ring outer peripheral portion of the main body portion. The inner peripheral lip portion takes an O-ring shape deformable in a protruding direction. The outer peripheral lip portion takes a structure deformable in a direction different from an extending direction, corresponding to a pressure in a sealed area. The member preferably seals when in communication with a plurality of spaces separated from an external space, the plurality of spaces from an external environment.

Abstract: In a load port apparatus, a clearance is formed between an inner circumferential surface of an opening of the chamber and an outer circumferential surface of a door. The area of the clearance between the plate and the opening portion on a plane flush with an interior side of the chamber is larger than the area of the clearance between the plate and the opening portion on a plane flush with the exterior of the chamber. A fan located at an upper side of the chamber generates a first flow of air in the downward direction. The clearance generates a second flow of air from the interior of the chamber to the exterior of the chamber. The second flow of air is generated by the difference in the area of the interior cross section of the clearance and area of the exterior cross section of the clearance.

Abstract: The substrate storage pod includes an engagement portion in an outer side surface of a lid of the pod, and an insertion slot through which the engagement portion can be accessed from an external space; the insertion slot is formed in a flange portion arranged around the periphery of an opening in the pod and into which the lid can be fitted, and a latch mechanism supported so as to be slidable in a direction parallel to a flange side wall in a pod main body-surface of the flange portion. An engaging portion of the latch mechanism reaches the engagement portion via the insertion slot. The engagement portion is switched between an engaged state and a non-engaged state in response to movement of the latch mechanism.

Abstract: The substrate storage pod includes a pod case which includes a hollow inner space for storing a substrate, and an opening; a lid member which is capable of sealing the opening; an exhaust port for exhausting a replacement gas in the hollow inner space of the pod case; and an exhaust space which is defined in the hollow inner space so as to communicate to the exhaust port. The exhaust space is defined in the hollow inner space by a multi-hole partition member including multiple holes and by an inner surface of the pod case. In the substrate storage pod, back pressure on an exhaust side can be lowered, and hence dust in the pod can be collected to the exhaust side.

Abstract: The invention is directed to a pod clamping unit for fixing a pod to a support table in a load port, the pod including a pod body capable of storing a wafer in the interior thereof and a lid, the load port having a pod opener that opens/closes the lid. The pod clamping unit includes a clamp portion that is provided on the support table and adapted to engage with a first engagement portion provided on a lower surface of the pod body to restrict upward movement of the pod relative to the support table, a restriction pin that is movable upwardly and downwardly relative to the support table and adapted to engage with a second engagement portion provided on the lower surface of the pod body to restrict movement of the pod in a disengaging direction that causes disengagement between the first engagement portion and the clamp portion, and a vertically driving portion that moves the restriction pin up to/down from the second engagement portion.

Abstract: In a load port apparatus, a clearance is formed between an inner circumferential surface of an opening of the chamber and an outer circumferential surface of a door. The area of the clearance between the plate and the opening portion on a plane flush with an interior side of the chamber is larger than the area of the clearance between the plate and the opening portion on a plane flush with the exterior of the chamber. A fan located at an upper side of the chamber generates a first flow of air in the downward direction. The clearance generates a second flow of air from the interior of the chamber to the exterior of the chamber. The second flow of air is generated by the difference in the area of the interior cross section of the clearance and area of the exterior cross section of the clearance.

Abstract: In a load port apparatus, a slit is formed between an inner circumferential surface of an opening on a wall of the chamber of the apparatus and an outer circumferential surface of a door. In a predetermined section of the slit, the slit width at the chamber side opening of the slit is made larger than the slit width at other positions with respect to the depth direction of the slit. By this feature, gas flow from the interior of the load port apparatus to the exterior through a clearance formed between the inner surface of the opening that allows to bring wafers out of/into a pod and the door that substantially closes the opening can be made stable.

Abstract: Provided is a method of detecting whether or not a lid is fixed to a pod appropriately when performing an operation of closing an opening of the pod by the lid in an FIMS system. Determination is made whether or not a door is present at a predetermined position when the lid is attached to the pod and whether or not the pod is displaced from a position of opening/closing the lid, and determination is made again, after the lid engages with the pod, whether or not the door is present at the predetermined position and whether or not the pod is displaced from the position of opening/closing the lid. When it is confirmed in both the determinations that the door is present at the predetermined position and the pod is not displaced, determination that fixation of the lid is appropriate is made.

Abstract: The FIMS system is for use with a pod composed of a lid having an engaged portion provided on the outer surface thereof and a pod body having a latch mechanism including an engagement portion that engages the engaged portion as it moves along a predetermined axis to fix the lid to the pod. The FIMS system has a latch mechanism drive means for driving the latch mechanism along a certain axis and an engagement portion position sensor that can generate a signal indicating whether the engagement portion is at an engagement position or non-engagement position when the latch mechanism drive means drives the latch mechanism. The latch mechanism drive means and the engagement portion position sensor are provided in the vicinity of a first opening portion of the FIMS system.

Abstract: In a pod used in an FIMS system, an engaged portion is provided on the outer surface of the lid of a pod. A through hole is provided in a flange portion that is provided around the pod opening and in which the lid is to be received. The through-hole allows access to the engaged portion from the external space. A latch mechanism is supported on the pod body side surface of the flange portion in such a way that it can slide in a direction parallel to the side wall of the flange. The engagement portion of the latch mechanism reaches the engaged portion through the aforementioned through-hole. Movement of the latch mechanism brings the engagement portion into an engaging state and a disengaged state.

Abstract: In a load port portion of a conventional clean device, it can happen that cleanliness is reduced by dust caused by wear of bellows and a lid is not separated by its weight from a main body. In order to solve such problems, a clean device is structured as follows: a lid of a clean box has a non-circular reception hole, a load port portion of the clean device has an opening/closing mechanism with a projection fittable in the receiving hole and has a buffer chamber, one end of bellows of the buffer chamber is connected to the bottom surface of the buffer chamber, and the other end of the bellows is fixed, on the outside of the buffer chamber, to raising/lowering means of a port door.

Abstract: In a pod used in an FIMS system, diffusion of dust particles or the like adhering on the lid of the pod to the interior of the system is reduced. An engaged portion is provided inside the outer surface of the lid of the pod, and a flange portion provided around a pod opening to which the lid can be fitted is provided with an insertion hole that allows access to the engaged portion from the exterior space. A latch mechanism is supported on the pod body side surface of the flange portion in such a way that the latch mechanism can slide along a direction parallel to the side wall of the flange. An engagement portion of the latch mechanism reaches the engaged portion through the insertion hole, and the state of the latch mechanism changes between an engaged state and a disengaged state with movement of the latch mechanism.