← Back to Patent Explorer
EP0146446A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process and apparatus for plasma treatment of semiconductor materials

Assignee: Centre National de la Recherche Scientifique
•
Filing: 1984-11-14
•
Granted: —
•
Expires: 2004-11-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from French Procédé et dispositif de traitement d'un matériau semiconducteur, par plasma. Method and device for treating a semiconductor material by plasma. Selon l'invention, le matériau (8) est placé dans une enceinte (2) électriquement isolante et soumis à un plasma obtenu par ionisation, dans l'enceinte, d'un composé gazeux approprié au traitement et soumis à un champ magnétique uniforme (B 0 ) ainsi qu'à un champ électromagnétique radio-fréquence dont la composante magnétique (B T ) est perpendiculaire au champ magnétique uniforme. According to the invention, the material (8) is placed in an electrically insulating enclosure (2) and subjected to a plasma obtained by ionization, in the enclosure, of a gaseous compound suitable for treatment and subjected to a uniform magnetic field ( B 0 ) as well as to a radio frequency electromagnetic field whose magnetic component (B T ) is perpendicular to the uniform magnetic field. Application à la gravure de plaquettes de silicium. Application to the etching of silicon wafers.

Inventors

  • 👤 André Bouchoule
  • 👤 Pierre Ranson
  • 👤 Daniel Henry

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 20:59
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32082; H01J37/321; H01J37/32431; H01J37/3266; H10; H10P; H10P50/00; H10P50/20; H10P50/24; H10P50/242; H10P50/26; H10P50/264; H10P50/266; H10P50/267; H10P50/268; H01J2237/00; H01J2237/32; H01J2237/33; H01J2237/334; H01J2237/3343; H01J2237/3345

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag