Patent ID: 6933737
Filing Date: 2005-08-23
Classification: G01R

Abstract:
1. A probe card of a measuring apparatus for a semiconductor device comprising: an electrically-conductive linear probe needle whose bottom end contacts with the device under test, a circuit board with which the upper end of the probe needle is connected electrically, an upper guide plate held horizontally and firmly near the middle point between the upper end and the center of said probe needle and having a guide hole to guide said probe needle, a lower guide plate held horizontally and firmly near the middle point between the center and the bottom end of said probe needle and having a guide hole to guide said probe needle, a rotary guide plate held horizontally and movably near the center of said probe needle and having a guide hole to guide said probe needle, an initial-position holding means to hold said rotary guide plate temporary and firmly at the initial position where said probe needle is straight, a movable holding means to hold movably said rotary guide plate at the position where the center of said probe needle bent, a driving means to rotate said rotary guide plate in the horizontal plane, wherein an eccentric bearing is mounted in said rotary guide plate and said movable holding means is the fixed guide pin inserted in said eccentric bearing.