Patent ID: 7323890

Claim:
A multi-point probe for testing electric properties on a specific location of a test sample, comprising: a supporting body defining a first surface; a first multitude of conductive probe arms, each of said conductive probe arms defining a proximal end and a distal portion and distal end being positioned in parallel relationship with said first surface of said supporting body along substantially the entire length of said conductive probe arms, and said conductive probe arms being movable in x, y, or z planes and being connected to said supporting body at said proximal ends thereof and having said distal ends freely extending and away from said supporting body, leaving said distal portions and ends free to contact a sample unsupported by said supporting body, giving individually flexible motion to said first multitude of conductive probe arms for allowing said distal end to contact said specific location of said test sample, said conductive probe arms freely extending from said supporting body in parallel relationship with said first surface of said supporting body along substantially the entire length of said conductive probe arms; and a second multitude of conductive guarding electrodes being positioned on second multitude of areas defined on said first surface between said first multitude of conductive probe arms, and comprising an insulating spacing between said electrodes and said conductive probe arms, said second multitude of conductive electrodes for active guarding and extending along side said first multitude of probe arms only up to their distal portions, so that said second electrodes are shorter than said first probe arms and said distal portions and ends of said first probe arms are free to contact the test sample.