The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2012
Filed:
Jan. 19, 2010
Helge Riemann, Schulzendorf, DE;
Friedrich-wilhelm Schulze, Kranichfeld, DE;
Joerg Fischer, Berlin, DE;
Matthias Renner, Wernsdorf, DE;
Helge Riemann, Schulzendorf, DE;
Friedrich-Wilhelm Schulze, Kranichfeld, DE;
Joerg Fischer, Berlin, DE;
Matthias Renner, Wernsdorf, DE;
PV Silicon Forschungs und Produktions GmbH, Erfurt, DE;
Abstract
A method for producing thin silicon rods using a floating zone crystallization process includes supplying high frequency (HF) current to a flat induction coil having a central opening, a plurality of draw openings and a plate with a slot as a current supply of the HF current so as to provide a circumfluent current to the central opening. An upper end of a raw silicon rod is heated by induction using the flat induction coil so as to form a melt pool. A thin silicon rod is drawn upwards through each of the plurality of draw openings in the flat induction coil from the melt pool without drawing a thin silicon rod through the central opening having the circumfluent current.