Balzers Und Leybold Deutschland Holding Ag

Leybold Aktiengesellschaft

Hans Kunz

Manfred Schuhmacher

Joachim Szczyrbowski

Dietmar Marquardt

Andreas Sauer

A dual magnetron cathode assembly includes a pair of elongate, parallel targets in coplanar relationship fixed to respective magnetic yokes with associated rows of permanent magnets for producing a magnetic field over the targets. A common back plate is provided for both cathodes, a center shield plate extending from the back plate to between the targets, side shield plates and end shield plates likewise extending from the back plate to form side-by-side rectangular shielding enclosures which expose only the sputtering surface of the targets. The yokes are fixed with respect to the vacuum chamber by insulative holders which extend through openings in the back plate.

Dual target cathode assembly with shielding

A pair of parallel elongate targets are fixed with respect to respective plates mounted in a vacuum chamber by means of clamps arranged along the longitudinal sides of each target, and an expandable wedge system between the rear plate and magnetic yokes on the backs of the targets. The wedge system for each target includes a wedge block having ramped surfaces which face outward, a pair of wedge jaws having ramped surfaces which slide against the ramped surfaces of the block, and a screw which draws the jaws together against the ramped surfaces of the block to expand the system and force the plate away from the yoke and fix the entire assembly in the clamps.

Cathode assembly

In a device for the releasable fastening of a target (3) or target base (5) together with a magnet yoke (31) on the cathode mounting of the process chamber in a cathode sputtering apparatus, the target base (5) is provided with locking toggles (11, . . . ) extending perpendicular to the target plane and able to enter through openings (42, . . . ) in the bottom of the magnet yoke (31) and cooperating with locking levers or disks journaled on the cathode mounting or arresting device (17) in the manner of a bayonet lock or of a bascular lock and after being turned pull the target base (5) tightly onto the cathode mounting or release the locking toggles (11, . . . ) so that the target (3) can be removed from the cathode mounting.

Growing community of inventors

Hasselroth, Germany

Hans Kunz