PLASMA PROCESSING APPARATUS, PLASMA PROCESSING METHOD AND END POINT DETECTION METHOD
First Claim
1. A plasma processing apparatus comprising:
- a processing chamber for carrying out plasma processing of a processing object;
a plasma generation means for generating a plasma in the processing chamber;
a measurement means for measuring an integrated value of the particle number of an active species contained in the plasma and moving toward the processing object; and
a control means for controlling the operation of the plasma processing apparatus in such a manner as to terminate the plasma processing when the integrated value has reached a set value.
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Accused Products
Abstract
A plasma processing apparatus (100) includes: a plasma generation means for generating a plasma in a processing chamber (1); a measurement section (60) for measuring an integrated value of the particle number of an active species contained in the plasma and moving toward a processing object (wafer W); and a control section (50) for controlling the apparatus in such a manner as to terminate plasma processing when the measured integrated value has reached a set value. The measurement section (60) measures the particle number of the active species by emitting a predetermined laser light from a light source section (61) toward the plasma, and receiving the laser light in a detection section (63) provided with a VUV monochromator.
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Citations
14 Claims
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1. A plasma processing apparatus comprising:
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a processing chamber for carrying out plasma processing of a processing object; a plasma generation means for generating a plasma in the processing chamber; a measurement means for measuring an integrated value of the particle number of an active species contained in the plasma and moving toward the processing object; and a control means for controlling the operation of the plasma processing apparatus in such a manner as to terminate the plasma processing when the integrated value has reached a set value. - View Dependent Claims (2, 3, 4)
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5. A plasma processing method for carrying out plasma processing of a processing object in a processing chamber of a plasma processing apparatus, said method comprising the steps of:
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generating a plasma in the processing chamber and initiating plasma processing; measuring an integrated value of the particle number of an active species contained in the plasma and moving toward the processing object; and terminating the plasma processing when the integrated value has reached a set value. - View Dependent Claims (6, 7, 8)
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9. An end point detection method for detecting the end point of plasma processing of a processing object as carried out in a processing chamber of a plasma processing apparatus, said method comprising the steps of:
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generating a plasma in the processing chamber and initiating plasma processing; measuring an integrated value of the particle number of an active species contained in the plasma and moving toward the processing object; and detecting the end point of the plasma processing based on a determination as to whether the integrated value has reached a set value. - View Dependent Claims (10, 11, 12)
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13. A computer-readable storage medium in which is stored a control program which operates on a computer, said control program, upon its execution, controlling a plasma processing apparatus such that it carries out an end point detection method for detecting the end point of plasma processing of a processing object as carried out in a processing chamber of the plasma processing apparatus, said end point detection method comprising the steps of:
- generating a plasma in the processing chamber and initiating plasma processing;
measuring an integrated value of the particle number of an active species contained in the plasma and moving toward the processing object; and
detecting the end point of the plasma processing based on a determination as to whether the integrated value has reached a set value.
- generating a plasma in the processing chamber and initiating plasma processing;
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14. A plasma processing apparatus comprising:
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a processing chamber for processing a processing object by using a plasma; a plane antenna, having a plurality of slots, for introducing microwaves into the processing chamber; a gas supply mechanism for supplying a gas into the processing chamber; an exhaust mechanism for evacuating and depressurizing the processing chamber; and a control section for controlling the operation of the plasma processing apparatus such that it carries out an end point detection method for detecting the end point of plasma processing of the processing object as carried out in the processing chamber, said end point detection method comprising the steps of;
generating a plasma in the processing chamber and initiating plasma processing;
measuring an integrated value of the particle number of an active species contained in the plasma and moving toward the processing object; and
detecting the end point of the plasma processing based on a determination as to whether the integrated value has reached a set value.
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Specification