Planar plasma diagnostic device, wafer plasma diagnostic device in which a planar plasma diagnostic device is embedded, and electrostatic chuck in which a planar plasma diagnostic device is embedded

DE602019075683T2Active Publication Date: 2025-09-10KOREA RES INST OF STANDARDS & SCI
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Patent Information

Application Number
DE602019075683
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-03-21
Filing Date
2019-04-15
Publication Date
2025-09-10
Estimated Expiration
2039-04-15

AI Technical Summary

Technical Problem

Existing plasma diagnosis methods face challenges in accurately measuring plasma density due to structural interference, low signal intensity, and resonance signals caused by the insertion of frequency probes, leading to unreliable measurements.

Method used

A planar-type plasma diagnosis apparatus with insulated transmission and reception antennas, buried in a wafer-shaped circular member or electrostatic chuck, enhances capacitive coupling and minimizes structural interference, allowing for real-time plasma density measurement.

Benefits of technology

Enables reliable plasma density measurement by increasing signal intensity and preventing resonance signals, while minimizing structural changes in the plasma chamber, facilitating real-time monitoring during the plasma process at low cost.

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