POWER ADJUSTMENT METHOD OF UPPER ELECTRODE POWER SUPPLY AND SEMICONDUCTOR PROCESS APPARATUS

    公开(公告)号:US20240194441A1

    公开(公告)日:2024-06-13

    申请号:US18553561

    申请日:2022-03-16

    Abstract: The present disclosure provides a power adjustment method of an upper electrode power supply of a semiconductor process apparatus. The method includes obtaining a processing load of an upper electrode power supply of a reference process chamber and a processing load of an upper electrode power supply of a current process chamber corresponding to semiconductor process step, when starting to perform a semiconductor process step, determining a power compensation coefficient for the current process chamber relative to the reference process chamber based on the processing load of the current process chamber and the processing load the reference process chamber, and controlling the upper electrode power supply to output compensation power. The compensation power is a product of the set power of the upper electrode power supply of the current process chamber corresponding to the semiconductor process step and the corresponding power compensation coefficient. With the power adjustment method of the present disclosure, the consistency of the plasma parameters in different process chambers is improved, thereby improving the process result consistency. The present disclosure also provides the semiconductor process apparatus.

    Variable mode plasma chamber utilizing tunable plasma potential

    公开(公告)号:US12002652B2

    公开(公告)日:2024-06-04

    申请号:US17536733

    申请日:2021-11-29

    Abstract: Plasma processing apparatus and associated methods are provided. In one example, a plasma processing apparatus can include a plasma chamber configured to be able to hold a plasma. The plasma processing apparatus can include a dielectric window forming at least a portion of a wall of the plasma chamber. The plasma processing apparatus can include an inductive coupling element located proximate the dielectric window. The inductive coupling element can be configured to generate a plasma from the process gas in the plasma chamber when energized with radio frequency (RF) energy. The plasma processing apparatus can include a processing chamber having a workpiece support configured to support a workpiece. The plasma processing apparatus can include an electrostatic shield located between the inductive coupling element and the dielectric window. The electrostatic shield can be grounded via a tunable reactive impedance circuit to a ground reference.

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