摘要:
The present invention relates to a method of and apparatus for detecting an end point of plasma treatment of a specimen. There is included selecting plasma spectrum having a characteristic wavelength from the plasma spectrum generating at the time of reaction in the plasma treatment of a specimen, setting a disregarding time for the plasma treatment end point detection, assuming, at the stage when the disregarding time for treatment end point detection has elapsed, a quantity of the selected plasma spectrum up to the time of said stage based on a quantity of same plasma spectrum at the time of said stage and a variation with the time in the last said quantity of plasma spectrum, and detecting the reaction time end point from the assumed quantity of plasma spectrum and an actual quantity of the same plasma spectrum after the time of said stage thereby making it possible to prevent erroneous detection of the end point of reaction in the plasma treatment and detect accurately the same even when the reaction time of the plasma treatment is short.
摘要:
An etching process state judgment method comprising: a spectral data obtaining step, in which an optical emission spectrum distribution is obtained by monitoring optical emission during an etching process of a plurality of wafers; a peak detection step, in which peaks are detected from the optical emission spectrum distribution at a specific time point during the etching process, to obtain peak characteristics; a common peak identifying step, in which peaks common to the wafers are identified among the peaks detected in the peak detection step; and a state detection step, in which the characteristics are compared regarding the common peaks, to detect a state of each wafer in the etching process.A state (anomaly or normalcy) of an etching process is detected from optical emission spectrum distribution at the time of etching process, by a simple method without assuming substances.
摘要:
An etching process state judgment method comprising: a spectral data obtaining step, in which an optical emission spectrum distribution is obtained by monitoring optical emission during an etching process of a plurality of wafers; a peak detection step, in which peaks are detected from the optical emission spectrum distribution at a specific time point during the etching process, to obtain peak characteristics; a common peak identifying step, in which peaks common to the wafers are identified among the peaks detected in the peak detection step; and a state detection step, in which the characteristics are compared regarding the common peaks, to detect a state of each wafer in the etching process.A state (anomaly or normalcy) of an etching process is detected from optical emission spectrum distribution at the time of etching process, by a simple method without assuming substances.
摘要:
Plasma processing of plural substrates is performed in a plasma processing apparatus, which is provided with a plasma processing chamber having an antenna electrode and a lower electrode for placing and retaining the plural substrates in turn within the plasma processing chamber, a gas feeder for feeding processing gas into the processing chamber, a vacuum pump for discharging gas from the processing chamber via a vacuum valve, and a solenoid coil for forming a magnetic field within the processing chamber. At least one of the plural substrates is placed on the lower electrode, and the processing gas is fed into the processing chamber. RF power is fed to the antenna electrode via a matching network to produce a plasma within the processing chamber in which a magnetic field has been formed by the solenoid coil. This placing of at least one substrate and this feeding of the processing gas are then repeated until the plasma processing of all of the plural substrates is completed. An end of seasoning is determined when a parameter including an internal pressure of the processing chamber has become stable to a steady value with plasma processing time.
摘要:
A semiconductor processing method in which a sample wafer is disposed inside of a chamber for processing and process data is detected by using a generated plasma generated which includes data concerning emission light generated. Information data corresponding to the processing data is selectively sent to one of first and second data storing devices in accordance with a predetermined condition. The selective sending of the information data includes selectively sending the information data to one of the first and second data storing devices until an amount of the information data which has been sent to and stored in the one of the storing devices reaches a predetermined amount of processing of the sample wafer as the predetermined condition, and thereafter selectively sending the information data corresponding to a succeeding process to the other of the first and second data storing devices.
摘要:
A method for controlling a semiconductor processing apparatus including a vacuum processing chamber, a plasma apparatus for generating plasma inside the vacuum processing chamber, and a process controller for controlling a process by holding a process recipe including plasma cleaning of inside of the vacuum processing chamber constant, comprises the steps of detecting process abnormality of the process on the basis of sensor data detected by sensors arranged in the semiconductor processing apparatus, and executing a recovery step for removing deposition deposited inside the vacuum processing chamber when abnormality is detected.
摘要:
A plasma processing method for performing plasma processing on a sample in accordance with a process recipe with the sample being placed on a sample table in which each of a plurality of areas is temperature-controlled by a temperature controller. The process recipe includes a plurality of temperature setting parameters for the sample table, and the plasma processing is performed on the sample in accordance with the process recipe which is prepared for each of a plurality of process steps.
摘要:
A vacuum processing method and apparatus having one cassette containing wafers which are to be transferred in a preset transferring order to a processing unit via a transfer unit, and another cassette containing wafers to be processed on an emergency basis. Automatic control of processing a wafer from the one cassette is effected, and in response to a request for emergency processing of a water of the another cassette, the automatic processing control of the one wafer from the one cassette is temporarily stopped while completing processing of the wafer of the one cassette returning the same to the one cassette. Emergency processing is initiated by transferring a wafer from the another cassette to the vacuum processing unit via the transfer unit. The processing of the emergency wafer is completed and the processed emergency wafer is returned to the another cassette.
摘要:
A plasma processing control system and method which can suppress influences caused by disturbances. The control system includes a plasma processor for performing processing operation over a sample accommodated within a vacuum processing chamber, a sensor for monitoring process parameters during processing operation of the plasma processor, a processed-result estimation model for estimating a processed result on the basis of a monitored output of the sensor and a preset processed-result prediction equation, and an optimum recipe calculation model for calculating correction values of processing conditions on the basis of an estimated result of the processed-result estimation model in such a manner that the processed result becomes a target value. The plasma processor is controlled on the basis of a recipe generated by the optimum recipe calculation model.
摘要:
A plasma processing system includes a first unit for plasma-processing a sample based on a recipe for plasma processing, and a second unit for modifying the recipe in accordance with a monitored value obtained during the plasma processing of the sample in the first unit. A next sample is plasma processed in the first unit based on the modified recipe.