Patent ID: 6104183
Filing Date: 2000-08-15
Classification: G01R

Abstract:
A semiconductor device testing apparatus comprising:a loader section,a constant temperature chamber located directly adjacent said loader section,a test chamber located directly adjacent said constant temperature chamber, said test chamber containing a tester head disposed therein,a temperature-stress removing chamber located directly adjacent said tester- chamber, andtwo unloader sections, whereina plurality of semiconductor devices to be tested are loaded onto a test tray transported into said loader section,said test tray loaded with said semiconductor devices is transported into said constant temperature chamber where a temperature stress of a desired temperature is imposed on said semiconductor devices,said test tray is then moved into said test chamber where the semiconductor devices carried on said test tray are brought into electrical contact with said tester head to test them for their electrical characteristics with the test results being stored for each of said semiconductor devices,upon completion of the testing said test tray is moved into said temperature-stress removing chamber where the tested semiconductor devices are relieved of the temperature stress of either a high or low temperature imposed in said constant temperature chamber,said test tray loaded with said temperature stress-relieved tested semiconductor device is delivered out to said two unloader sections where the tested semiconductor devices on said test tray are sorted out into pass articles and failure articles on the basis of said stored test results, followed by said pass and failure articles being transferred onto corresponding general-purpose trays,said constant temperature chamber, said test chamber and said temperature-stress removing chamber are disposed in a transverse direction of the apparatus in a side-by-side relation to form a transverse row therewith;said loader section is located in front of said constant temperature chamber in a front view of the apparatus in such a manner that a direction of supply of the test tray from the loader section to the constant temperature is at an angle of 90.degree. to said transverse row in a plane view of the apparatus; andsaid two unloader sections are located in front of said test chamber and said temperature-stress removing chamber in a front view of the apparatus, respectively, in such a manner that a direction of supply of the test tray from the temperature-stress removing chamber to one of the two unloader sections is at an angle of 90.degree. with respect to said transverse row, in the plane view of the apparatus.