Probe card system
First Claim
Patent Images
1. A wafer test system comprising:
- a) a plurality of cassettes, each of said cassettes comprising a wafer probe card and memory means, said memory means adapted to store operational data regarding said wafer probe card; and
b) loading means for removing and inserting said cassettes into said test system.
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Abstract
A semiconductor wafer probe test interface system (2) and method of operating the system. The wafer probe system includes a plurality of cassettes (302) adapted to hold wafer probe test cards (304). The cassettes are loaded into position for testing of semiconductor wafers with a transport assembly system (6). A memory device (316) on the cassette is used to store data regarding usage of the card such as number of wafer touchdowns. A smart controller (220) has the capability to "talk" to the prober and tester.
27 Citations
29 Claims
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1. A wafer test system comprising:
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a) a plurality of cassettes, each of said cassettes comprising a wafer probe card and memory means, said memory means adapted to store operational data regarding said wafer probe card; and b) loading means for removing and inserting said cassettes into said test system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A semiconductor wafer probe card cassette comprising:
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a body; a probe card mounted in said body, said probe card comprising a plurality of probes for transmitting electrical signals to a semiconductor wafer; and a semiconductor memory mounted on said cassette, said semiconductor memory storing operational data regarding said probe card. - View Dependent Claims (20, 21, 22, 23)
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24. A system for testing semiconductor wafers comprising:
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a) a plurality of cassettes, each of said cassettes comprising a wafer probe card and a semiconductor memory, said semiconductor memory adapted to serially input and output a number of touchdowns of said wafer probe card to said semiconductor wafers; and b) a transport assembly for moving a selected one of said cassettes into a wafer prober, said transport assembly comprising a single data input pin for serially reading a said number of touchdowns from said semiconductor memory when said cassettes are inserted into said wafer prober, and for inputting an updated number of touchdowns to said memory when said cassettes are removed from said wafer prober. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification