Abstract: A load port including a frame having an opening, a vessel receiving table that receives the wafer vessel, a door removably attached to the opening, a door opening and closing mechanism that opens and closes the door, and a closing mechanism that exerts force on the door when the door opening and closing mechanism closes the door.

Abstract: A load port apparatus is disclosed wherein the total period of time of operation of a lid member mounting and dismounting apparatus and a mapping apparatus is minimized while avoiding interference of the two apparatus with each other. An interference avoiding sensor apparatus is provided on the lid member mounting and dismounting apparatus and the mapping apparatus and detects that a lid member suction plate of the lid member mounting and dismounting apparatus is disposed at a position lower by a value exceeding a preset value than the arm to which the mapping sensors are attached to enable pivotal motion of the arm without interfering with the lid member suction plate. Then, immediately after the preset value is detected by the interference avoiding sensor apparatus, the arm is pivoted to the mapping position to start the mapping.

Abstract: A load port including a frame having an opening, a vessel receiving table that receives the wafer vessel, a door removably attached to the opening, a door opening and closing mechanism that opens and closes the door, and a closing mechanism that exerts force on the door when the door opening and closing mechanism closes the door.

Abstract: A load port apparatus is disclosed wherein the total period of time of operation of a lid member mounting and dismounting apparatus and a mapping apparatus is minimized while avoiding interference of the two apparatus with each other. An interference avoiding sensor apparatus is provided on the lid member mounting and dismounting apparatus and the mapping apparatus and detects that a lid member suction plate of the lid member mounting and dismounting apparatus is disposed at a position lower by a value exceeding a preset value than the arm to which the mapping sensors are attached to enable pivotal motion of the arm without interfering with the lid member suction plate. Then, immediately after the preset value is detected by the interference avoiding sensor apparatus, the arm is pivoted to the mapping position to start the mapping.

Abstract: A substrate is supported by planes of four substrate supporters arranged on the top surface of a transport arm. Three ultrasonic distance measuring sensors are fixed on a fixing base arranged above the substrate. The three ultrasonic distance measuring sensors are arranged to measure the distances to the top surface of the substrate in the vicinity of its periphery. In this case, the ultrasonic distance measuring sensors are positioned so that measurement values of the ultrasonic distance measuring sensors may become equal to each other with the substrate being normally supported. The ultrasonic distance measuring sensors each measure the distances to the top surface of the substrate to supply the measurement values to a controller.

Abstract: A transmitting window is provided on one side of a casing opposite to a substrate outlet. An ionizer is provided outside the transmitting window of a cleaning unit. The transmitting window is made of a polyimide resin or an acrylic resin, for example. Weak X-rays emitted from the ionizer pass through the transmitting window to reach the substrate outlet, shutter, spin chuck, guard, and the like in the cleaning unit. The spin chuck comprises a plurality of conductive holding pins.

Abstract: A substrate is supported by planes of four substrate supporters arranged on the top surface of a transport arm. Three ultrasonic distance measuring sensors are fixed on a fixing base arranged above the substrate. The three ultrasonic distance measuring sensors are arranged to measure the distances to the top surface of the substrate in the vicinity of its periphery. In this case, the ultrasonic distance measuring sensors are positioned so that measurement values of the ultrasonic distance measuring sensors may become equal to each other with the substrate being normally supported. The ultrasonic distance measuring sensors each measure the distances to the top surface of the substrate to supply the measurement values to a controller.

Abstract: A substrate transfer apparatus provided with a first substrate transfer mechanism having a first substrate holding hand which is movable while holding a substrate; and a second substrate transfer mechanism having a second substrate holding hand for receiving and transferring a substrate directly from and to the first substrate holding hand. The apparatus has a positioning mechanism disposed, in a moving passage of a substrate held by the first substrate holding hand, independently from the first substrate transfer mechanism, and having a positioning contact portion for regulating the movement of a substrate such that the substrate is positioned at a predetermined position on the first substrate holding hand.

Abstract: A substrate transfer apparatus provided with a first substrate transfer mechanism having a first substrate holding hand which is movable while holding a substrate; and a second substrate transfer mechanism having a second substrate holding hand for receiving and transferring a substrate directly from and to the first substrate holding hand. The apparatus has a positioning mechanism disposed, in a moving passage of a substrate held by the first substrate holding hand, independently from the first substrate transfer mechanism, and having a positioning contact portion for regulating the movement of a substrate such that the substrate is positioned at a predetermined position on the first substrate holding hand.