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:
Main tester unit tests an IC device for presence of a defect for each of a plurality of addresses of the IC device under predetermined test conditions and stores test results for the individual addresses into a first memory. Curing analysis processing section cures each of the addresses of the IC device determined as defective, on the basis of the test results for the individual addresses stored in the first memory. To this end, the curing analysis processing section may rearrange an address logic of the IC device to replace a physical space of the defective addresses with an extra or redundant address space and thereby place each of the defective addresses in a usable condition. In parallel with the operations by the curing analysis processing section, a defect analysis section acquires, from the main tester unit, the test results for the individual addresses along with data indicative of the predetermined test conditions for storage into a second memory, and analyzes a specific cause of the defect in the IC device on the basis of the stored data in the second memory. With this arrangement, it is possible to acquire information necessary for analyzing the defect in the IC during a curability determining analysis test on a mass production line and thereby can effectively analyze the specific cause of the detected defect.
摘要:
The improved fluorescence detector comprises a tubular electrophoretic device through which a sample labelled with four kinds of fluorescent dye is caused to migrate, illumination optics for illuminating the tubular electrophoretic device with exciting light and detection optics for detecting the fluorescence emitted from the sample illuminated with the exciting light and it is characterized in that a plurality of tubular electrophoretic devices (1) are arranged in a row, a plurality of graded-index lenses (9) are arranged parallel to and in the same number as said plurality of tubular electrophoretic devices (1), each lens array being composed of four vertically stacked graded-index lenses, a plurality of bandpass filter arrays (11) are also arranged parallel to and in the same number as said plurality of electrophoretic devices (1), each filter array being composed of four filters arranged vertically in a row, and a light-receiving element of a planar type (13) is provided at the back of the rows of said bandpass filters (11). The apparatus is an efficient and compact multi-color fluorescence detector capable of real-time detection.
摘要:
Method and apparatus for a disk texturing operation in which laser pulses are successively bombarded against a delimited surface area on the face of a rotating disk, from an optical laser pulse irradiating means which is put in movement in a radial direction relative to the disk to provide a textured zone of a predetermined width on the disk. A pulsed laser beam from a laser light source is adjusted to an optimum power level for an aimed bump diameter. The laser beam is then transformed into an annular beam of a collimated light flux having specified inner and outer diameters, and the resulting laser pulses are successively bombarded on the texturing zone through an objective optical system condensing said laser pulses into a specified spot diameter thereby to form minute bumps of predetermined shape and diameter uniformly on the surface of the disk.
摘要:
Arranging a pair of temperature control units on both sides of gel 1 and arranging light-transmitting slit 134 on one of the elements, irradiation of an excitation beam over the gel 1 and signal detection are practiced through the slit 134. Introducing dry air onto the slit part, mildew occurrence is prevented on the detecting part. Detecting the power level applied to the gel and calculating the temperature of the temperature control units so that the gel temperature might be a predetermined temperature, on the basis of the detected power level, thereafter carrying out the feedback control of the power level, the gel temperature can be controlled appropriately and strictly during electrophoresis in an automatic fluorescent electrophoresis system, so that high-speed analysis can be done highly reproducibly at a higher voltage applied even by SSCP.
摘要:
A transfer mechanism for transferring molded IC device packages or the like between different types of trays which have IC package holder nests in differently spaced arrays. The transfer mechanism includes a suction gripper assembly supported on a horizontally and vertically movable robot arm, and having four suction heads mounted separately on four support blocks on a mounting plate. The four support blocks consist of a first support block fixed in a predetermined reference position on the mounting plate, second and third support blocks movably supported on the mounting plate for movements toward and away from the first support block in perpendicularly intersecting directions, and a fourth support block movably supported on the mounting plate for movements toward and away from the first support block in a diagonal direction following movement of at least one of the second and third support blocks.
摘要:
Functional devices for inspecting disks are arranged around a turntable at equal spacings of angle 2n.pi./(n+m) in the order of the operations they perform. The turntable is rotated both in forward direction by angle 2n.pi./(n+m) and in reverse direction by angle 2m.pi./(n+m) such that the total angle of rotations in forward direction is equal to that of rotations in reverse direction when the necessary operations have completed without causing the turntable to rotate fully once.
摘要翻译:用于检查盘的功能装置按照它们执行的操作的顺序以等于角度2n pi /(n + m)的间隔围绕转盘布置。 转盘在正向方向上旋转角度为2n pi /(n + m),反方向旋转角度为2mpi /(n + m),使得正向旋转的总转角等于反向转动的总转角 方向,当必要的操作完成,而不会使转台完全旋转一次。
摘要:
A wafer surface inspection method and device including a low angle light receiving system having an elevation angle less than 30.degree. with reference to the wafer surface, and a high angle light receiving system having an elevation angle equal to or larger than 30.degree., scans the wafer with a laser beam, receives scattered light to perform extraneous substance detection in response to the scanning, and detects wafer defects only by the high angle light receiving system, and sticking extraneous substances by either the low angle receiving system or by both the low angle light receiving system and the high angle light receiving system.
摘要:
The tester and the test method for testing an eccentricity of a head turnout zone of a magnetic disk determine a turnout zone as acceptable or unacceptable by spirally scanning a turnout zone of a magnetic disk with a laser spot by rotating the magnetic disk and continuously moving either the laser spot radially of the magnetic disk or the magnetic disk radially thereof, obtaining a detection signal having amplitude corresponding to an intensity of a scattering light from the magnetic disk irradiated with the laser spot, extracting a first waveform of the detection signal corresponding to an intermediate region between an inside variation region in which an inside boarder line of the turnout zone radially of the magnetic disk by radial movement of the turnout zone caused by an ecentricity of the turnout zone and an outside variation region in which an outside boarder line of the turnout zone radially of the magnetic disk by the radial movement of the turnout zone caused by the eccentricity of the magnetic disk and a second waveform of either the detection signal adjacent to the first waveform and corresponding to the inside variation region or the detection signal adjacent to the first waveform and corresponding to the outside variation region and detecting an eccntricity of the turnout zone on a basis of a positional relation between the first and second waveforms.