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 thermal processing apparatus for a semi-conductor wafer. A holder is provided within a processing vessel on which the wafer to be processed is placed. Upper and lower heaters are provided above and below the holder in order to heat the wafer. Each of the heaters are attached within heating vessels. A gas supply head supplies a processing gas in a shower form between the upper heater and the holder. The uniformity of the surface temperature of the wafer is improved by heating the wafer from both above and below.
摘要:
The present invention relates to semiconductor wafers which have a through hole formed at their center portion. A processing apparatus provided with a conveyor means including a wafer holder having a holding protrusion which engages with this through hole implements oxidation and dispersion processing or CVD processing to a processing surface of a semiconductor wafer so that a semiconductor wafer can have heat treatment performed without accompanying film growth faults or heat distortion.
摘要:
A heat treatment apparatus comprising heat rays radiating means having a sheet-like heat rays radiating section, a process tube radiated and heated by heat rays shot from the sheet-like heat rays radiating section, and means for carrying a substrate, which has a surface of a semiconductor film and/or a dielectric film to be treated, into and out of the process tube, wherein said substrate is positioned to the sheet-like heat rays radiating section in the process tube in such a way that the incident angle of heat rays onto the peripheral portion of the treated surface of said substrate becomes smaller than 60.degree., so that heat rays absorptivity at the peripheral portion of said surface can be increased.
摘要:
A heat shielding member is provided on an object-to-be-processed holder for loading/unloading an object to be processed to/from a thermal processing position. The heat shielding member can cover a space below the processing position. As a result, leakage of radiation heat from the processing position can be blocked, and an optimum temperature gradient at the processing position can be maintained. Accordingly the entire surface of the object to be processed can be efficiently thermally processed at uniform temperatures, and throughputs in the fabrication steps can be improved.
摘要:
An apparatus is disclosed which can automatically load semiconductor wafers into a vertical type heat treatment furnace and unload treated semiconductor wafers out of the heat treatment furnace. The semiconductor wafer treating apparatus comprises exchange unit for exchanging the semiconductor wafers between the cassette and the wafer boat in a predetermined exchange position, transfer unit for allowing the wafer-held boat to be transported between the exchange position and a respective, vertical type heat treatment furnace and for allowing the transfer of the wafer boat to be effected between the transfer unit and the respective heat treatment furnace, and an elevator unit provided in the heat treatment furnace and adapted to receive the wafer boat from the transfer unit and to load the wafer boat into a vertically erect process tube and unload the wafer boat from the process tube.
摘要:
A wafer support device including at least one support member shaped like a rotatable rod and having plural wafer support grooves formed at different pitches on the outer surface of the member in the longitudinal direction thereof. The frequencies of exchanging the support member with a new one or washing and cleaning it can be remarkably reduced and the productivity of semi-conductor wafers can be enhanced.