Tegal Corporation

Other

Douglas H Warenback

Josef Thomas Hoog

David J Drage

Ninko T Mirkovich

Thomas M Rathmann

Mark M Stark

In apparatus for transporting semiconductor wafers, a spatula contains a single major recess for receiving a wafer. Adjacent one edge of the recess is a shoulder for locating the wafer in the sequence of operations for loading the spatula. As a result of the sequence, the center of the wafer is held at a predetermined, known location.

Spatula for wafer transport

A gas inlet having a non-uniform array of inlet holes for the non-uniform introduction of an etching gas into a reaction chamber of a dry etching apparatus. The non-uniform introduction of gas compensates for non-uniform characteristics in the dry etching apparatus resulting in a uniform etch.

Non-uniform gas inlet for dry etching apparatus

A plasma reactor of the single wafer, planar electrode type achieves improved serviceability by means of a service seal arrangement. The lower electrode of the plasma reactor is carried on a chuck. Both the chuck and the upper portions of the reactor seal to an upper plate of a vacuum containment vessel. A wafer transport mechanism is contained within the vacuum containment vessel. The sealing arrangement allows removal of the upper portions of the reactor and even replacement of the lower electrode without disturbing the vacuum in the vacuum containment vessel.

Growing community of inventors

San Rafael, CA, United States of America

Douglas H Warenback