Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Reexamination Certificate
2006-09-12
2006-09-12
Tang, Minh N. (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
C324S755090, C361S816000, C361S818000
Reexamination Certificate
active
07106050
ABSTRACT:
A shielding apparatus was developed to eliminate electromagnetic waves interference (EMI) to an integrated circuit (IC) die while it is under test. The shielding apparatus comprises a conductive plate having a first and second surfaces and a central opening where the IC device is placed. The first surface includes a first EMI gasketted channel and a central cavity disposed inside of the gasketted channel. The second surface of the apparatus includes a second EMI gasketted channel and the central opening which extends through both the first and second surfaces. When the first surface mates with the surface of automatic test equipments (ATE) interface board, the first gasketted channel forms a tight seal. Similarly, when a plunger from a device handler mates with the second surface, the second EMI gasketted channel forms a seal that blocks out EMI. In this way, the IC device in the central opening of the apparatus is isolated from external EMI.
REFERENCES:
patent: 5880930 (1999-03-01), Wheaton
patent: 6483719 (2002-11-01), Bachman
patent: 7012189 (2006-03-01), Kriege et al.
Sterne Kessler Goldstein & Fox P.L.L.C.
Tang Minh N.
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