摘要:
A defect inspection apparatus includes a movable stage for mounting a substrate having circuit patterns as an object of inspection, an irradiation optical system which irradiates a slit-shaped light beam from an oblique direction to the circuit patterns of the substrate, a detection optical system which includes an image sensor for receiving reflected/scattered light from the substrate by irradiation of the slit-shaped light beam and converting the received light into a signal, and an image processor which processes the signal. The irradiation optical system includes a cylindrical lens and a coherency reduction optical system, which receives the light beam and emits a plurality of slit-shaped light sub-beams which are spatially reduced in coherency in a light-converging direction of the cylindrical lens. The cylindrical lens focuses the plurality of slit-shaped light sub-beams into the slit-shaped light beam irradiated to the surface of the substrate.
摘要:
An inspection apparatus and method includes a light source which emits an ultraviolet laser beam, an illuminating unit having a polarization controller and an object lens for illuminating a specimen with light emitted from the light source and passed through the polarization controller and the object lens, a detection unit having a sensor for detecting light from the specimen illuminated by the illuminating unit, a processor which processes a signal output from the sensor so as to detect a defect on the specimen, and a display which displays information output from the processor. The processor processes an image formed from the signal output from the sensor in which the image is reduced in speckle pattern.
摘要:
When using a CCD sensor as a photo-detector in a device for inspecting foreign matters and defects, it has a problem of causing electric noise while converting the signal charge, produced inside by photoelectric conversion, into voltage and reading it. Therefore, the weak detected signal obtained by detecting reflected and scattered light from small foreign matters and defects is buried in the electric noise, which has been an obstacle in detecting small foreign matters and defects. In order to solve the above problem, according to the present invention, an electron multiplying CCD sensor is used as a photo-detector. The electron multiplying CCD sensor is capable of enlarging signals brought about by inputted light relatively to the electric noise by multiplying the electrons produced through photoelectric conversion and reading them. Accordingly, compared to a conventional CCD sensor, it can detect weaker light and, therefore, smaller foreign matters and defects.
摘要:
A defect inspection apparatus includes an irradiation optical system 20, a detection optical system 30, and an image processor 40. In the irradiation optical system, a mirror 2603 is disposed to reflect downward a beam flux that has been guided to a first or second optical path, and a cylindrical lens 251 and an inclined mirror 2604 are disposed to focus the beam flux that has been directed downward by the mirror, at an inclination angle from a required oblique direction extending horizontally, onto a substrate 1 to be inspected, as a slit-shaped beam 90.
摘要:
Arrangements (e.g., methods) for manufacturing a display device, including irradiating an amorphous semiconductor film formed on a substrate with an excimer laser beam to convert the amorphous semiconductor film into a polycrystalline semiconductor film; and irradiating predetermined areas of the polycrystalline semiconductor film intermittently with a continuous wave laser beam while a position of the substrate with respect to the continuous wave laser beam is scanned, crystal grains larger than those of the polycrystalline semiconductor film other than the predetermined areas are formed in each of the predetermined areas locally in the polycrystalline semiconductor film, wherein first thin film transistors are formed in the predetermined areas while second thin film transistors are formed in the polycrystalline semiconductor film other than the predetermined areas thereof.
摘要:
The active layer (active region) of the thin-film transistor making up the driver circuit is obtained by reformation implemented by scanning the continuous-wave laser light, condensed into a linear form or a rectangle form extremely longer in the longitudinal direction than in the transverse direction, along a given direction crossing the longitudinal direction. This is made up of a poly silicon film containing crystal grains having no grain boundaries crossing the direction of current flow, that is, a band-like polycrystalline silicon film. As a result, it is possible to implement a display device having stable and high quality active elements outside the display region on the insulating substrate.
摘要:
The invention relates to a device production process for forming a circuit pattern on a substrate such as semiconductor device. To enable a stable inspection of a minute foreign particle and a pattern defect occurring in manufacture of a device at a high speed and with a high sensitivity, an object to be inspected on which a transparent film is formed, is irradiated with a beam which is emitted from an illuminator whose illumination direction and illumination angle are selected from a plurality of choices to be optimum, so that scattered reflected light from a minute foreign particle defect on the object or the transparent film is effectively detected by eliminating a noise from the pattern formed on the object, and a detection optical system is optimized by evaluating and adjusting, with an image forming performance checker, an image forming performance of the detection optical system included in an inspecting apparatus.
摘要:
The present invention provides a semiconductor manufacturing method, a plasma processing method and a plasma processing apparatus for generating a plasma in a processing chamber and carrying out processing on material to be processed by using the plasma, comprising a floating-foreign-particle measuring apparatus including: a light radiating optical system for radiating a light having a desired wavelength and completing intensity modulation at a desired frequency to the processing chamber; a scattered-light detecting optical system for separating a component with the desired wavelength from scattered lights obtained from the processing chamber as a result of radiation of the light by the light radiating optical system, for optically receiving the component and for converting the component into a first signal; and a foreign-particle-signal extracting unit which separates a second signal representing foreign particle floating in the plasma or in an area in proximity to the plasma from a third signal obtained by emission of the plasma for detection of the second signal by extraction of a component with the desired frequency used for the intensity modulation from the first signal obtained from the scattered-light detecting optical system.
摘要:
A plurality of substrate assemblies each including a substrate such as a reticle or photomask used for exposure and frames, mounted to the opposite surfaces of the substrate, to which foreign particle deposition preventive films are applied are stored in a magazine. By using a transport unit, a substrate assembly is taken out of the magazine, transported from the magazine to a mask table disposed at an exposure position and set at the mask table. A foreign particle detector is provided near the transport unit to optically detect foreign particles present on the foreign particle deposition preventive film of the substrate assembly. The substrate assembly set at the mask table is aligned to a wafer. A light beam is irradiated on the substrate assembly aligned relative to the wafer and a circuit pattern formed on the substrate is projected upon the wafer through a projection optical system to expose the wafer to the light beam through the circuit pattern.
摘要:
A method of inspecting defects of a sample on a movable table includes a first step for, on a basis of position information of the defects which is previously detected by an other inspection system, driving the table so that the defects come into a viewing field of an optical microscope having a focus which is adjusted, a second step for re-detecting the defects to obtain a first detection result, a third step for correcting the position information of defects on a basis of position information of the re-detected defects, and a fourth step for reviewing the defects whose position information is corrected to obtain a second detection result. At the second step, re-detecting is performed using reflection light or scattered light from the sample which passes an optical filter which includes a light shielding portion and a light transmitting portion.