IC testing method

Details IC testing method IC testing method

1998-03-17

2000-12-19

Nguyen, Vinh P.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

G01R 3102

Patent

active

061631469

ABSTRACT:
An IC testing method is disclosed in which IC's to be tested are placed on IC carriers disposed in an m-row, n-column array on a test tray in a loader, and the IC's to be tested are connected to sockets disposed as an m-row, k-column array on a socket attachment in a manner corresponding to every a-th column of the IC carriers in a testing section for purpose of measurement. n and k are integers equal to or greater than two, n=ak where a is an integer equal to or greater than two. The IC testing method comprises the steps of determining if the number of IC's to be tested which are present in the loader is greater than the number of IC carriers, if it is determined that the number of IC's to be tested is equal to or greater than the number of IC carriers, causing the loader to load the IC's to be tested on all the IC carriers on the test tray, and causing the test section to connect the loaded IC's to be tested which are located in k columns corresponding to every a-th column of the IC carriers with the corresponding sockets to perform a test of simultaneous measurement and to repeat the test a times while translating the test tray by an IC carrier array pitch, thus completing the testing of all the IC's to be tested on the test tray. If it is determined that the number of IC's to be tested is less than the number of IC carriers, the IC's to be tested are disposed at respective positions in a sequence of columns which are subject to a simultaneous measurement in the test section, and the IC's to be tested in every a-th column of the IC carriers are connected with the corresponding sockets to perform a test of simultaneous measurement in the test section, and such test is repeated while translating the test tray by an IC carrier array pitch.

REFERENCES:
patent: 5150797 (1992-09-01), Shibata
patent: 5290134 (1994-03-01), Baba
patent: 5788084 (1998-08-01), Onishi et al.
patent: 5801527 (1998-09-01), Ishii et al.

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