Patent ID: 11927621
Assignee: HIGH PRECISION DEVICES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus for testing a device under defined thermal conditions, comprising: an outer housing;
wherein, located within a chamber defined by the outer housing is:
a chuck, the chuck comprising a surface for receiving a device and one or more clamping elements which are configured to be actuated to receive and retain the device to the surface of the chuck;
wherein the chuck is connected to a motion stage by a column, and wherein the motion stage is configured to actuate the column at least laterally and vertically;
a probe card configured for contacting the device with one or more contacts;
a test zone enclosed by a test zone casing;
wherein the test zone casing encloses the chuck and the probe card;
wherein the probe card is attached to the test zone casing by one or more support elements and is disposed over the surface of the chuck;
wherein the test zone casing and the outer housing comprise coplanar aligned slots through which a wafer may be introduced to the chuck;
wherein the test zone casing comprises thermal shielding material;
wherein the test zone casing comprises a bottom surface having an opening through which the test zone is accessed by the column;
wherein the test zone comprises one or more cooling elements located within the test zone casing, on the test zone casing or in the column;
wherein the opening in the bottom surface of the test zone casing is thermally shielded by a shielding element circumscribing the column; and
wherein the shielding element comprises:
a floating shield;
a flexible bellows; or
a combination floating shield and flexible bellows.