Afore Oy

Bluefors Cryogenics Oy

Bluefors Oy

David Gunnarsson

Leif Roschier

Vesa Henttonen

Ari Kuukkala

Timo Salminen

Matti Manninen

Aki Junes

Amir Niknammoghadam

Pieter Vorselman

A testing device () is for electrically testing integrated circuits on a wafer (). The testing device () includes a vacuum chamber (), a chuck () for holding the wafer (), a probe card () for electrically contacting the integrated circuits, and a radiation shield () arranged inside the vacuum chamber () and enclosing the chuck () and the probe card (). In the testing device (), the vacuum chamber () is provided with a gate valve (), the radiation shield () is provided with a hatch (), and the testing device () includes a wafer loading assembly () for loading the wafer () onto the chuck () through the gate valve () and the hatch ().

Testing device

The present invention provides a testing device for electrically testing integrated circuits on a wafer. The testing device comprises a vacuum chamber, a chuck for holding the wafer, a probe card for electrically contacting the integrated circuits, means for moving the chuck relative to the probe card, a first radiation shield arranged inside the vacuum chamber and enclosing the chuck and the probe card, and a cooling unit thermally connected to the first radiation shield. The means for moving the chuck relative to the probe card comprises a supporting column having a first end and a second end, the first end of the supporting column being attached to the chuck, and the first radiation shield comprises a first fixed part having a first aperture through which the supporting column is arranged to pass, and a first movable part that is attached to the supporting column and arranged to cover the first aperture.

Testing device includes radiation shields for testing integrated circuits on a wafer

Growing community of inventors

Helsinki, Finland

David Gunnarsson