摘要:
An automatic integrated circuit testing system, device and method using an integrative computer. The system includes a machine frame having at least one testing computer for holding and testing the integrated circuit. The machine frame also has at least one automatic plugging/unplugging machine for engaging the integrated circuits with the computer system and removing the integrated circuits after testing has been completed. The machine frame further includes at least one controller device electrically connected to the testing computer and the automatic plugging/unplugging machine for controlling the movements of the automatic plugging/unplugging machine and the testing computer. The testing computer and the integrated circuit together form an integrative computer system capable of executing various general application programs and special testing programs for integrative testing and analysis.
摘要:
A test system for an integrated circuit chip, protects a circuit board from frost during low temperature testing. The test system comprises sealing means capable of removably attaching to a second surface of the test circuit board and for sealing a portion of the second surface to isolate the portion of the second surface of the test circuit board from ambient air. In this manner, the sealing unit prevents generation of frost at the solder junction portion of the test circuit, which would otherwise lead to leakage failures during test.
摘要:
A single gas tight system which performs multi-functions including reducing the thickness of oxides on contact pads and probing, testing, burn-in, repairing, programming and binning of integrated circuits. A system according to one embodiment of the present invention includes: (a) a gas tight chamber having (1) a plurality of modules each having a holding fixture, a wafer, a probing device, an electronic circuit board, and a temperature control device, (2) a gas source for supplying non-oxidizing gases such as nitrogen and hydrogen into the chamber, (3) a handler for moving the wafers and the probing devices, and (b) a computer coupled to the chamber for controlling and communicating with the handler, the temperature control devices, the holding fixtures and the probing devices. A holding fixture holds a wafer having integrated circuits and aligns the wafer to a probing device. An integrated circuit has a plurality of conductive contact portions that are able to be connected to probe points of the probing device. A temperature control device is used to heat the wafer during an oxide reduction process or during burn-in of the wafer. During the oxide reduction process, hydrogen is introduced into the chamber, and the wafer is heated so that the oxides on the contact pads can combine with hydrogen to form water vapor, thus reducing the thickness of the oxides. The computer analyzes the test and/or burn-in data and provides control signals for repairing or programming the integrated circuits. The computer system also generates a database that contains the performance data of all the integrated circuits on the wafer that are tested and allows for immediate feedback of the quality of the integrated circuits.
摘要:
An IC testing apparatus 1 for performing a test by applying at least a low temperature stress to ICs to be tested comprising a refrigerant cycle 210 wherein at least a compressor 211, condenser 212, expansion valve 214 and evaporator 215 are connected in this order, and a cold air applying line 220 having a blower 223 for supplying heat exchanged cold air by the evaporator 215 to the ICs to be tested.
摘要:
A burn-in testing system for evaluating a circuit under test, the system including a burn-in board having a plurality of receptacles, at least one of which being sized to receive the circuit under test, test interface circuitry supported by the board and coupled to the receptacles, the test interface circuitry including a transmitter and receiver; power conductors supported by the board, coupled to the receptacles and configured to be connected to a power supply to power the circuit under test during burn-in testing, control and data signal conductors, a burn-in oven having a compartment selectively receiving the burn-in board and being configured to apply heat within the compartment, and an interrogator unit supported by the burn-in oven, the interrogator unit being configured to send commands to the test interface circuitry to exercise the circuit under test optically or via radio communication and to receive responses to the commands optically or via radio communication. A method for testing an integrated circuit having operational circuitry formed thereon, optically and via radio frequency.
摘要:
A probe method is disclosed which inspects the electrical characteristics of an object to be inspected (wafer W) by bringing the electrodes of the object to be inspected placed on a main chuck and probes of a probe card into contact with each other. The main chuck is movable in the X, Y, Z, and .theta. directions and heated to a predetermined inspection temperature. The main chuck retreats to a position separated from the inspection position during high-temperature inspection. The time (retreat time) during which the main chuck stays retreated is calculated by a retreat time calculating mechanism. A preheat execute determination mechanism determines whether the probe card and probes are to be preheated on the basis of the retreat time. When it is determined that preheating is necessary, a preheat time calculation mechanism calculates the preheat execute time. Preheating is executed during the preheat execute time determined by a preheat end determination mechanism, and misalignment of the probes is corrected.
摘要:
A method and apparatus for automatically inserting and ejecting electrical connectors of electronic component test trays from electrical connectors in a panel of an environmental test chamber, e.g. an oven, at the beginning and end of a test period to facilitate loading and unloading the test trays. The electronic components are inserted into test trays so that electrical connections are made with test tray conductors which terminate at a test tray connector. The trays are loaded into the oven in an insertion cycle by manually sliding them onto lateral tray supports with the tray connector ends aligned with mating electrical connectors in the panel of the test oven. The insertion cycle of a track guided, carriage mounted, inserter/ejector mechanism is commenced wherein the mechanism is advanced from tray to tray to sequentially insert the tray connectors into the panel mounted connectors until all trays are inserted. The oven door is closed and the test is conducted. Upon completion of the test, the door is opened and the ejection cycle of the mechanism is initiated to sequentially eject the tray connectors from the panel mounted connectors until all trays are ejected. During insertion and ejection of each tray, the mechanism rotates one or more pivot arms about pivots to apply their free ends against the trays to move the trays on the lateral tray supports a constant distance to ensure reliable connection or removal of the tray from the panel mounted connectors. As the mechanism carriage traverses the ends of the trays a tray position trip sensor detects any out of position trays. The mechanism decreases operator fatigue and errors due to improperly seated connectors.
摘要:
An electric probing-test machine comprises a probe card having a plurality of probes contacted with chips of a semiconductor wafer and serving to apply test signal to a tester which judges whether circuits on the chips of the wafer are correct or deficient, a main chuck for holding the wafer at a test temperature, a system for cooling the main chuck, and a controller for controlling the cooling system. The main chuck includes a chuck top contacted directly with the wafer, a jacket arranged to conduct heat exchange relative to the chuck top, and a temperature sensor for detecting the temperature of the chuck top. The cooling system has a pump for supplying a coolant from a reservoir to the jacket. Responsive to temperature information detected by the temperature sensor, the amount of the coolant supplied from the reservoir to the jacket is controlled by the controller to thereby control the temperature of the chuck top.
摘要:
A system of automatic control of integrated circuits, in which a wafer of integrated circuits (10) to be tested is supported by a sample carrier (61) and is electrically connected to a probe card (60). This system includes (a) a water-tight chamber (20) traversed by a flow or dry inert gas under excess pressure; (b) a mechanical assembly (40) of platforms (41, 42, 43, 44) for controlling the displacements of the wafer to be tested, with interpolation of a thermally insulated wedge (46) between the assembly of platforms and the sample carrier (61); and (c) a device (80) for cooling the sample carrier (61) internal of the system and including a container (81) of cooling liquid, a tube being prolonged in the cooling liquid to conduct the latter to a cooling cavity (63) internal of the sample carrier, and a device (64, 65) for exhausting the gaseous liquid appearing in the cooling cavity.
摘要:
A device for individually testing semiconductor integrated circuits in wafer form at elevated and/or reduced temperatures include a fixture body for connection to a conventional probing device. The fixture body has an open-ended aperture to permit visual inspection of a circuit being tested, a plenum to receive pressurized gas at a selected temperature(s), and nozzles to direct the gas from the plenum into the aperture for ejection onto the surface of the integrated circuit being tested to rapidly bring that circuit to the temperature of the gas.