摘要:
For testing electrical properties of packaged IC devices, there is provided an apparatus which includes a test board which is located at a testing station and provided with a plural number of contacting sockets for connecting individual IC devices to an IC tester separately and independently of each other, a loader which is located at a loading station and adapted to feed untested IC devices toward the test board, an unloader which is located at an unloading station and adapted to discharge tested IC devices from the test board at the testing station, and a device transfer mechanism which is movable across the testing station to transfer untested IC devices from the loader to the test board and also to transfer tested IC devices from the test board to the unloader. Upon detecting completion of a test on one of IC devices in one socket of the test board, a fresh untested IC device is transferred to the testing station to replace the tested IC device. As soon as the fresh IC device is set in position in that socket, execution of a test program is started with respect to that socket on the test board.
摘要:
A driver circuit integrated with a load current output circuit has a function as a driver for applying a predetermined test waveform to a device under test (DUT), and a function as a load current output for reproducing an actual use situation by receiving the load current to the DUT to judge a response waveform by receiving the response waveform from the DUT. Both functions are made up on a common circuit, operate as the driver circuit when applying the test waveform, and operate as the load current output circuit when judging the response waveform.
摘要:
Light beam is irradiated onto a surface of a substrate to be inspected and scattered lights from the surface of the substrate are received at different light reception angles, so that first and second light detection signals corresponding to the different light reception angles are generated. Reference function defining a correlation in level value between the first and second light detection signals is set, a comparison is made between respective level values of the first and second light detection signals using the reference function as a comparison reference, and it is determined, on the basis of a result of the comparison, which of a plurality of different types of defects, such as a foreign substance and crystal-originated pit, a possible defect present on the surface of the substrate, which is represented by the light detection signals, corresponds to. Also, the level value of a predetermined one of a plurality of the light detection signals is weighted with a predetermined coefficient, and a comparison is made between the weighted level value of the predetermined light detection signal and the level value of the remaining light detection signal, to thereby identify any of a plurality of different types of defects, such as a foreign substance and scratch, present on the surface of the substrate.
摘要:
An abrasive tape is supplied to a tape head by a tape supply unit and taken up from the tape head by a tape take-up unit. The tape head presses the abrasive tape against a surface of an object under polish, which is rotated by a rotating unit. A tape head pressuring unit utilizes a vice voice coil motor, for example. Since the tape head pressuring unit generates a pressuring force for pressuring the tape head using the electromagnetic force, it is able to set a minute pressuring force by controlling a drive signal, and to obtain the fine adjustment of the pressuring force easily by controlling the electric signal. Therefore, it becomes possible to press the abrasive tape against the surface of the object under polish with a desired low pressure.
摘要:
A lamp house is located face to face with a substrate which is transferred by a conveyer means. A dielectric barrier discharge lamp is provided in the lamp house to irradiate the substrate with ultraviolet light, while a moistened inert gas, consisting of an inert gas and water vapor, is supplied to a space between the substrate and the dielectric barrier discharge lamp from a moistened inert gas generating means. Under irradiation of ultraviolet light from the dielectric barrier discharge lamp, water vapor in the moistened inert gas is split into a reducing active member nullH.null and an oxidative active member null.OHnull.
摘要:
Method and apparatus for registering and bonding upper and lower substrate plates together through a sealer material and in such a way as to form a gap of a predetermined width between the two substrate plates. Registered substrate plates are provisionally pressed to form a joined substrate assembly, which is then pressed under heated conditions at a hot press station, thereby compressing the sealer material into a flattened form and at the same time thermally hardening the sealer material to form a predetermined gap space between the two substrate plates. In order to correct positional deviations which occur to the upper and lower substrate plates in the course of the hot pressing, on the basis detected positional deviations of upper and lower substrate plates of a hot-pressed substrate assembly, upper and lower substrates are set in offset positions instead of aligned positions when registering them at the provisional press station to cancel predicted positional deviations at the hot press station.
摘要:
While being transferred in substantially horizontal state along a predetermined path of transfer by a conveyer means, a substrate plate is dried by a jet of compressed air which is spurted out from a slit-like mouth of an air knife nozzle crosswise of the entire width of the substrate plate and at a predetermined angle of incidence with respect to a drying surface of the substrate plate to scrape off a liquid. The angle of incidence of jet air is made shallower as soon as the substrate on the conveyer means comes to a point of entry to an air blasting zone and is made deeper at latest when the substrate plate comes to a position immediately before a point of disengagement from the air blasting zone.
摘要:
Method and apparatus for treating a surface of a substrate plate under irradiation of ultraviolet ray emitted from a dielectric barrier discharge lamp. Upon admission into a treating chamber, oxygen is removed from a treating surface and surrounding atmosphere of a substrate plate in order to suppress energy losses of ultraviolet ray to a minimum.