摘要:
A pitch changing device of the present invention includes a lift mechanism for unloading a plurality of wafers arranged in a cassette at predetermined pitches from the cassette while the pitches are kept unchanged, and a chuck mechanism for holding the unloaded wafers while the pitches are kept unchanged. The chuck mechanism includes moving pieces mounted to be movable in an arrangement direction of the wafers, for respectively supporting the wafers, elastic members mounted in the movable pieces to be expandible/contractible in the arrangement direction of the wafers, and a driving mechanism for expanding/contracting the elastic members. When the elastic members expand/contract by the driving mechanism, the pitches of the wafers are changed while the wafers are held. The lift mechanism includes a handler for variably moving wafer stands in the arrangement direction of the wafers, and changes the pitches while the wafers are lifted.
摘要:
A temperature control method in a rapid heat treatment apparatus comprising simulatively heating dummy wafers in a process tube and previously detecting and grasping by temperature sensors a wafer temperature rising pattern, a heater temperature rising pattern and an internal atmosphere temperature rising pattern, arranging wafers to be processed in the process tube, detecting a temperature of each zone and that of each heater element by the temperature sensors, upon heating the wafers, and controlling each heater element on the basis of the detected temperatures and the wafer, heater and internal atmosphere temperature rising patterns by a controller to rapidly and uniformly raise the temperature of each wafer until the temperature of the wafers in each zone reaches the intended one and becomes stable.
摘要:
A wafer transferring method for transferring wafers between a cassette and a boat having grooves to hold the wafers, comprises the steps of providing an identification mechanism for positional alignment on the boat in advance, detecting the identification mechanism, and aligning the boat to a predetermined position based on a detection result and transferring the wafers from the cassette to the boat. A wafer transferring apparatus comprises a loading device for extracting wafers from a cassette and transferring the wafers onto a boat, a detection device for detecting an identification section provided on the boat in order to identify a wafer transferring position on the boat, a control device for acquiring the wafer transferring position on the boat based on a detection result attained from the detection device and controlling a mutual position between the boat and the cassette to come to a predetermined position.
摘要:
A clean air apparatus includes a housing having an opening through which a carrier housing semiconductor wafers is supplied into the housing and an I/O port for supporting the carrier and a furnace for treating the wafer, provided in the upper portion of the housing. The carriers are at the same time supported by a first carrier stage provided in the upper portion of the housing and supported by a second carrier stage provided in the lower portion of the housing. The carrier or carriers are selectively moved between the I/O port and the first stage, between the I/O port and the second stage, and between the first stage and the second stage. A clean air is applied to the wafers in the carriers supported by the I/O port, the first stage and the second stage.
摘要:
A wafer transferring method for transferring wafers between a cassette and a boat having grooves to hold the wafers, comprises the steps of providing an identification mechanism for positional alignment on the boat in advance, detecting the identification mechanism, and aligning the boat to a predetermined position based on a detection result and transferring the wafers from the cassette to the boat. A wafer transferring apparatus comprises a loading device for extracting wafers from a cassette and transferring the wafers onto a boat, a detection device for detecting an identification section provided on the boat in order to identify a wafer transferring position on the boat, and a control device for acquiring the wafer transferring position on the boat based on a detection result attained from the detection device and controlling a mutual position between the boat and the cassette to come to a predetermined position.
摘要:
The present invention is a heat processing furnace comprising: a processing vessel for accommodating an object to be processed and performing thereto a heat process; and a cylindrical heater disposed to surround a circumference of the processing vessel, for heating the object to be processed; wherein: the heater includes a cylindrical heat insulating member, ribbed shelf sections that are axially formed in a tier-like manner on an inner circumference of the heat insulating member, and heating resistance wires of a helical pattern that are placed along the respective shelf sections; and pin members are arranged in the heat insulating member at suitable intervals therebetween, the pin members holding the heating resistance wires such that the heating resistance wires are movable in a radial direction of the heater, while preventing dropout of the heating resistance wires from the shelf sections.
摘要:
A thermal processing apparatus including: a cylindrical processing vessel; a support unit to be loaded into and unloaded from the vessel; and a heating furnace surrounding an outer periphery of the vessel, with a cooling space therebetween. The furnace is connected to a cooling-gas introduction unit, including a gas introduction passage to which a blowing fan is connected, for introducing a cooling gas into the cooling space during a temperature lowering operation after a thermal process. The furnace is connected to a cooling-gas discharge unit, including a heat exchanger, a suction fan, and a gas discharge passage, for discharging the cooling gas of a raised temperature from the cooling space. Connected to the gas discharge passage at a position upstream of the heat exchanger is a temperature-lowering gas introduction unit for introducing a temperature-lowering gas to the cooling gas of a raised temperature so as to lower its temperature.
摘要:
The present invention is a thermal processing unit including: a heating-furnace body whose upper end has an opening; a heating unit provided on an inside wall of the heating-furnace body; a reaction container consisting of a single tube contained in the heating-furnace body; a gas-discharging-pipe connecting portion formed at an upper portion of the reaction container; and a first temperature controlling unit provided around the gas-discharging-pipe connecting portion.
摘要:
A closed-type cassette is mounted on a cassette stand disposed in a working region at a position corresponding to an opening formed in a wall separating the working region from a loading region. When the cassette is mounted on the cassette stand, a detecting device gives a signal to that effect to a controller. Then, the controller closes a valve to interrupt nitrogen gas supply into the loading region. A lid of the cassette is opened 20 to 30 sec after the interruption of nitrogen gas supply into the loading region and, then, nitrogen gas supply is resumed. The pressure difference between the loading region and the interior of the cassette is decreased by interrupting nitrogen gas supply into the loading region, so that the lid can be easily opened.
摘要:
In a semiconductor wafer heat-treating apparatus, there is provided a piping connection device on a gas inlet pipe leading to the heat-treating apparatus and a gas outlet pipe derived from the heat-treating apparatus. The piping connection device has a spherical convex connecting element, and a concave connecting element having a concave spherical surface into which the spherical element is snugly fitted. A pair of presser plates are placed on the outer surfaces of the two connecting elements and clamped by bolts so as to press confronting sealing surfaces of the convex and concave connecting elements against each other. Because the outer surfaces of the two connecting elements to be engaged with the pair of presser plates are spherically fashioned, the connection surfaces can present a satisfactory sealing condition without subjecting the pair of the pipes connected by the piping connection device to excessive biasing forces even though the two pipes are angled to each other.