Patent ID: 8757250

Claim:
A thermal controller for controlling temperature of a device under test, comprising: a heat sink which is in thermal contact with a single device under test; a pusher having a free-floating gimbal attachment and attached to the heat sink; and a thermal chuck attached to the pusher, the thermal chuck comprising: a first plate; a pneumatic manifold attached to one surface of the first plate; a fluid manifold attached to one surface of the pneumatic manifold; and a second plate, one side of the second plate being attached to one surface of the fluid manifold and another side of the second plate being attached to the pusher, wherein a plurality of chambers spaced symmetrically about a longitudinal axis of the thermal chuck is provided through the pneumatic manifold, the fluid manifold and the second plate, a first diaphragm is provided in each of the plurality of chambers, to provide an upper chamber portion and a middle chamber portion in each of the plurality of chambers, a second diaphragm is provided in each of the plurality of chambers, to provide a lower chamber portion and the middle chamber portion in each of the plurality of chambers, the lower chamber portion being provided below the middle chambers portion the second diaphragm including a hole that allows fluid communication between the middle chamber portion and the lower chamber portion, the upper chamber portions of the plurality of chambers are connected to one another via pneumatic ports, the middle chamber portions of the plurality of chambers are connected to one another via fluid ports, and a fluid, for controlling a temperature of the s device, flowing from an intake, flows into the heat sink via the fluid ports and the fluid flowing in the heat sink flows into an outlet via the fluid ports, a chamber element applies a displacement of the first diaphragm to the pusher when a positive or negative pressure is supplied to the upper chamber portion of each of the plurality of chambers, the heat sink is operatively connected to the thermal chuck by the pusher in fluid communication with the plurality of chambers.