摘要:
In a defect detection apparatus (1) acquired is two-dimensional image data of a swath which is a strip-like area corresponding to one of a plurality of divided patterns which are obtained by dividing a pattern block on one die of a substrate (9). In the defect detection apparatus (1), a reference image acquired from one swath in a reference die is stored in an image memory (51) and the reference image is compared with an inspection image acquired from a swath corresponding to a reference image on an inspection die by a defect detector (52) to detect defects of the inspection image. As a result, it is possible to easily achieve a defect detection of a fine pattern formed on a swath of the inspection die while reducing storage capacity required for the image memory (51).
摘要:
A reference image and an inspection image indicating pattern on a substrate are acquired and a specified pixel value range (63) is set on the basis of a histogram (62a) of pixel values of the reference image. Then, a transfer curve (71) having a large inclination in the specified pixel value range (63) is obtained. The inspection image and the reference image are converted in accordance with an LUT having transfer characteristics indicated by the transfer curve (71), an enhanced differential image between a converted inspection image and a converted reference image is generated and each pixel value of the enhanced differential image is compared with a predetermined threshold value, to thereby perform a detection of defective pixel. With this, a value of pixel in the enhanced differential image which corresponds to a pixel in the reference image (or inspection image) having the pixel value in the specified pixel value range (63) is enhanced, and appropriate inspection is thereby performed.
摘要:
In a defect detection apparatus, images of first to third inspection areas on a substrate are picked up to acquire first to third images. A positional difference acquisition part (51) acquires a first difference vector between the first image and the second image and a second difference vector between the second image and the third image. A differential image generation part (52) generates a first differential image between the first image and the second image while adjusting a position of the first image to the second image on the basis of the first difference vector and a second differential image between the second image and the third image while adjusting a position of the second image to the third image on the basis of the second difference vector. Then, a position of the second differential image is adjusted to the first differential image on the basis of the second difference vector and the second differential image after position adjustment and the first differential image are compared with each other, to detect a defect in a periodic pattern on the substrate with high accuracy.
摘要:
In a defect detection apparatus, images of first to third inspection areas on a substrate are picked up to acquire first to third images. A positional difference acquisition part (51) acquires a first difference vector between the first image and the second image and a second difference vector between the second image and the third image. A differential image generation part (52) generates a first differential image between the first image and the second image while adjusting a position of the first image to the second image on the basis of the first difference vector and a second differential image between the second image and the third image while adjusting a position of the second image to the third image on the basis of the second difference vector. Then, a position of the second differential image is adjusted to the first differential image on the basis of the second difference vector and the second differential image after position adjustment and the first differential image are compared with each other, to detect a defect in a periodic pattern on the substrate with high accuracy.
摘要:
In a pattern inspection apparatus (1), an electron beam emission part (31) emits an electron beam onto a substrate (9) and an image acquisition part (33) detects electrons from the substrate (9) to acquire a grayscale inspection image of the substrate (9). A binary reference image generated from design data (81) is multivalued by a grayscale image generator (52) on the basis of a histogram of pixel values in the inspection image to generate a grayscale reference image. A comparator (53) compares the inspection image with the reference image. The pattern inspection apparatus (1) can thereby perform an inspection of a very small pattern on the substrate (9) on the basis of the design data (81).
摘要:
In a defect detection apparatus 1, in a reference image inspection circuit 42 compared are a reference image representing a pattern in a die which is determined as a reference on a substrate 9 and a plurality of supervisory images which represent patterns in selected block areas, respectively, to detect defects included in the reference image. Subsequently, in the target image inspection circuit 44, a target image representing a pattern in another die and the reference image are compared to detect a plurality of defect candidates included in the target image. Then, a defect detector 45 excludes defect candidates overlapping with the defects included in the reference image from the plurality of defect candidates on the basis of at least positional information of the defects included in the reference image. This makes it possible to detect defects existing in the pattern in another die accurately while eliminating effects of the defects existing in the pattern in the die which is determined as the reference.
摘要:
A printing device includes a nozzle, a radiation unit and a control unit. The nozzle is configured to eject metallic ink including metal fragments onto a medium. The radiation unit is configured to irradiate the medium with light to temporarily cure the metallic ink. The control unit is configured to control irradiation of the light by the radiation unit so that a film thickness formed by the metallic ink is equal to or less than a length of a long side of the metal fragments when the metallic ink is temporarily cured on the medium.
摘要:
A power converter includes a base plate having thereon a switching device, and positive and negative conductors respectively including main portions disposed parallel to the base plate. One of the main portions is placed over the other of the main portions. The main portions are disposed adjacent to and parallel to each other. The main portions are insulated from each other. The power converter includes a capacitor having positive and negative terminals electrically connected to the respective main portions of the positive and negative conductors. Each of the positive and negative conductors includes a side portion extending from the main portion toward the base plate, and a terminal portion extending from the side portion and joined to the base plate. The side portion is formed with a cutout extending from the end adjacent to the base plate to the opposite end connected to the main portion.
摘要:
A power converter apparatus that includes a substrate, plate-like positive and negative interconnection members, and capacitors is disclosed. Pairs of groups of switching elements are mounted on the substrate. Each of the positive interconnection member and the negative interconnection member has a terminal portion. The terminal portion has a joint portion that is electrically joined to a circuit pattern on the substrate. The switching elements are arranged in the same number on both sides of the joint portion of at least the positive interconnection member of the positive and negative interconnection members.
摘要:
Disclosed herein is a printing device including: a plurality of heads configured to discharge inks cured by light irradiation and arranged in a transport direction of a medium; a plurality of pre-curing light sources provided in correspondence with the plurality of heads and configured to irradiate pre-curing light to dots formed on the medium by the heads; and a completely-curing light source configured to irradiate completely-curing light to the dots to which the light from the plurality of pre-curing light sources is irradiated, wherein a first printing mode in which a background ink is discharged from a head of an upstream side of the transport direction of the heads for discharging color inks and a second printing mode in which the background ink is discharged from a head of a downstream side of the transport direction of the heads for discharging the color inks are present.