PLASMA ETCHING DEVICE
PROBLEM TO BE SOLVED: To prevent plasma irradiation on a focus ring in a plasma etching device that etches a wafer coated with a resist by use of plasma.SOLUTION: A plasma etching device includes: an electrostatic chuck 2 that is disposed on a base 1 and to mount a wafer 10; a focus ring 4 that is d...
Gespeichert in:
Hauptverfasser: | , , |
---|---|
Format: | Patent |
Sprache: | eng ; jpn |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | PROBLEM TO BE SOLVED: To prevent plasma irradiation on a focus ring in a plasma etching device that etches a wafer coated with a resist by use of plasma.SOLUTION: A plasma etching device includes: an electrostatic chuck 2 that is disposed on a base 1 and to mount a wafer 10; a focus ring 4 that is disposed in a periphery of the electrostatic chuck 2 above the base 1 and that is made thin in the electrostatic chuck 2 side so as to prevent interference with the wafer 10; and a protective cover 5 that is applied in an outer peripheral part on the wafer 10 and covers a thin part 41 of the focus ring 4 when the wafer 10 is mounted on the electrostatic chuck 2.SELECTED DRAWING: Figure 1
【課題】レジストが塗られたウエハに対してプラズマによりエッチングを行うプラズマエッチング装置において、フォーカスリングへのプラズマの照射を防ぐ。【解決手段】基部1上に配置され、ウエハ10が載置される静電チャック2と、基部1上の静電チャック2の周囲に配置され、静電チャック2側がウエハ10と干渉しないよう肉薄であるフォーカスリング4と、ウエハ10上の外周部分に被せられ、当該ウエハ10が静電チャック2上に載置されることでフォーカスリング4の肉薄部分41を覆う保護カバー5とを備えた。【選択図】図1 |
---|