ION IMPLANTER AND ION IMPLANTATION METHOD
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United States of America Patent
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Issued Date -
Aug 17, 2023
app pub date -
Feb 10, 2023
filing date -
Feb 15, 2022
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Abstract
The ion implantation method includes (a) moving a wafer adjusted to have a first implantation angle with respect to an ion beam from a beam irradiation range toward a beam non-irradiation range; (b) starting a change of the wafer from the first implantation angle to a second implantation angle while the wafer is moved within the beam non-irradiation range after the wafer having the first implantation angle is moved from the beam irradiation range; (c-1) reversing a movement direction of the wafer at an end of the beam non-irradiation range and moving the wafer toward the beam irradiation range; and (c-2) completing the change of the wafer from the first implantation angle to the second implantation angle while the wafer is moved within the beam non-irradiation range before the wafer is returned to the beam irradiation range.
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