Patent ID: 6433294
Filing Date: 2002-08-13
Classification: G01R

Abstract:
A semiconductor device testing system comprising:a semiconductor device testing apparatus comprising: a tester part which comprises a tester head, and a handler part which comprises device transfer means and test tray conveying means; storage information memory means; and a dedicated classifying machine, wherein: a plurality of semiconductor devices to be tested are loaded by said device transfer means on a test tray in a loader section of said testing apparatus, said test tray is transported by said test tray conveying means into a test section of the testing apparatus where said semiconductor devices loaded on said test tray are brought into electrical contact with said tester head of said tester part disposed in said test section to test operation of the semiconductor devices, after completion of the test, said test tray with the tested semiconductor devices loaded thereon is transported by said test tray conveying means from the test section to an unloader section of the testing apparatus where the tested semiconductor devices on said test tray are transferred by said device transfer means from said test tray onto general-purpose trays without being sorted, the general-purpose trays with the tested semiconductor devices loaded thereon, are transported out from said testing apparatus to the dedicated classifying machine, said memory means stores storage information of respective tested semiconductor devices including an identification number assigned to each semiconductor device, and test results of each semiconductor device, every time each tested semiconductor device is loaded on associated one general-purpose tray; said storage information of the tested semiconductor devices loaded on the associated general purpose tray is transmitted from said dedicated classifying machine; and said dedicated classifying machine receives the general-purpose trays loaded with the tested semiconductor devices and sorts the received, tested semiconductor devices loaded on each of the general purpose trays based on their storage information, whereby a sort operation of the dedicated classifying machine is performed independent on an operation of the testing apparatus.