Probe card
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 11, 2007
Grant Date -
Mar 23, 2006
app pub date -
Sep 20, 2005
filing date -
Aug 9, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A probe card includes a main substrate, a main reinforcing plate attached to the upper surface of the main substrate, a sub-reinforcing plate attached to the upper surface of the main reinforcing plate, and coupling force adjusting means that couples the main reinforcing plate with the sub-reinforcing plate and adjusts the coupling force therebetween. The coupling force adjusting means has a plurality of threaded holes provided at intersections of a plurality of imaginary concentric circles, which is provided with a distance from a center of a probe card on a surface of the sub-reinforcing plate, and a plurality of imaginary straight lines, which is provided radially from the center at an predetermined angle; a plurality of screw holes provided at same intersections on a surface of the main reinforcing plate; and a plurality of coupling screws threaded selectively into the threaded holes 23a and the screw holes.
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