Device for electrically contacting a floating semiconductor wafer having an insulating film
First Claim
1. A device for electrically contacting a semiconductor substrate having an insulating film disposed over at least a portion of the semiconductor substrate, the device comprising:
- a chuck having a wafer support surface which holds the wafer;
a scriber movably attached to the chuck, the scriber configured to produce a perforation through the insulating film; and
an electrically conductive probe electrically contacting ground and movably attached to the chuck, the conductive probe configured to contact the semiconductor substrate through the perforation.
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Accused Products
Abstract
The invention relates to a device for contacting and electrically grounding semiconductor substrate coated with or otherwise having an insulating film positioned thereover. The device includes a chuck having a wafer support surface which holds the wafer and a scriber movably attached to the chuck. The scriber is configured to contact the wafer through an opening in the chuck and to produce a perforation through the insulating film. The device further includes an electrically conductive probe movably attached to the chuck and configured to be moved into an access opening in the chuck to contact the semiconductor substrate through the perforation. Thus, the device increases the accuracy of open circuit type measurements of the wafer surface potential, particularly for Kelvin and Monroe electrode measurements of electrical properties of insulating films on semiconductor substrates.
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Citations
19 Claims
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1. A device for electrically contacting a semiconductor substrate having an insulating film disposed over at least a portion of the semiconductor substrate, the device comprising:
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a chuck having a wafer support surface which holds the wafer; a scriber movably attached to the chuck, the scriber configured to produce a perforation through the insulating film; and an electrically conductive probe electrically contacting ground and movably attached to the chuck, the conductive probe configured to contact the semiconductor substrate through the perforation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for electrically grounding a semiconductor substrate, having an insulating film disposed over at least a portion of the substrate, the method comprising:
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providing (1) a chuck having a wafer support surface which holds the substrate, (2) a scriber movably attached to the chuck, and (3) an electrically conductive probe for contacting and electrically grounding the semiconductor substrate, the probe movably attached to the chuck; positioning the wafer in a fixed position on the chuck; perforating the insulating film to form a perforation; and positioning the probe to contact the semiconductor substrate through the perforation. - View Dependent Claims (18, 19)
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Specification