Globalwafers Co., Ltd.

Corner Star Limited

Giancarlo Zago

Stephan Haringer

Marco Zardoni

Giorgio Agostini

James Dean Eoff

Gianni Dell'Amico

Renzo Odorizzi

Additive feed systems for feeding at least two different additives to silicon disposed within a crucible of an ingot puller apparatus are disclosed. The additive feed system may include first and second feed trays which are caused to vibrate to move first or second additive from a canister in which the additive is stored to another vessel in which the amount of first or second additive added to the vessel is sensed. The additive is discharged from the vessel into an additive feed tube through which the additive enters the crucible.

Additive feed systems, ingot puller apparatus and methods for forming a single crystal silicon ingot with use of such additive feed systems

A system for growing silicon crystal structures includes a housing defining a growth chamber and a feed system connected to the housing for delivering silicon particles to the growth chamber. The feed system includes a container for holding the silicon particles. The container includes an outlet for discharging the silicon particles. The feed system also includes a channel connected to the outlet such that silicon particles discharged from the container flow through the channel. The feed system further includes a separation valve connected to the channel and to the housing. The separation valve is configured such that a portion of the feed system rotates relative to the housing.

Feed system for crystal pulling systems

Growing community of inventors

Merano, Italy

Giancarlo Zago