WO2008032488A1 - Dispositif de mesure de taille de motif et procédé de mesure de superficie de motif - Google Patents
Dispositif de mesure de taille de motif et procédé de mesure de superficie de motif Download PDFInfo
- Publication number
- WO2008032488A1 WO2008032488A1 PCT/JP2007/064082 JP2007064082W WO2008032488A1 WO 2008032488 A1 WO2008032488 A1 WO 2008032488A1 JP 2007064082 W JP2007064082 W JP 2007064082W WO 2008032488 A1 WO2008032488 A1 WO 2008032488A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pattern
- area
- line
- profile
- edge position
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/0006—Industrial image inspection using a design-rule based approach
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
- G06T7/62—Analysis of geometric attributes of area, perimeter, diameter or volume
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/46—Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]; Salient regional features
- G06V10/469—Contour-based spatial representations, e.g. vector-coding
- G06V10/476—Contour-based spatial representations, e.g. vector-coding using statistical shape modelling, e.g. point distribution models
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/12—Measuring as part of the manufacturing process for structural parameters, e.g. thickness, line width, refractive index, temperature, warp, bond strength, defects, optical inspection, electrical measurement of structural dimensions, metallurgic measurement of diffusions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10056—Microscopic image
- G06T2207/10061—Microscopic image from scanning electron microscope
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20112—Image segmentation details
- G06T2207/20168—Radial search
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30148—Semiconductor; IC; Wafer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V2201/00—Indexing scheme relating to image or video recognition or understanding
- G06V2201/06—Recognition of objects for industrial automation
Definitions
- the present invention relates to an apparatus and a method for measuring a pattern dimension using an electron beam.
- the present invention also relates to a pattern dimension measuring apparatus and a pattern area measuring method capable of measuring the area of a contact hole or the like with good reproducibility.
- incident electrons are irradiated while being scanned within the scanning range of the electron beam, the secondary electrons emitted from the sample force are acquired through the scintillator, and the amount of electrons acquired is converted into luminance and converted into an image. Acquire data and display it on a display device.
- the work of whether or not the line width of the line pattern, the area of the contact hole, etc. is formed within the design standard value. It is generally adopted to do.
- the line width and area of the pattern are managed according to the following procedure. After a predetermined range of the pattern formed on the photomask is displayed on the display, the electron beam is irradiated with aiming at the measurement point within the display range, and based on the secondary electrons reflected from the measurement point Get the luminance distribution waveform. Then, the luminance distribution waveform is analyzed to obtain the pattern edge position and set it as the line width. Further, the area of the contact hole is calculated from the value of the acquired image data. Judgment is made whether the line width and area are within the allowable error range, and it is used as a criterion for determining whether the photomask quality is good or as process feedback information to the previous process.
- Patent Document 2 discloses an image of alignment marks provided on a wafer as a CCD camera. A method of accurately detecting the position of alignment marks by performing edge extraction and edge extraction is disclosed.
- the area of a contact hole or the like is calculated based on luminance information of pixels (pixels) constituting an SEM image. That is, pixels having a value greater or smaller than a predetermined reference value in luminance are extracted from the SEM image, and the number of pixels is summed to obtain the area.
- the luminance information varies depending on the material of the measurement object, the film thickness, the pattern shape, and the apparatus parameters such as the acceleration voltage of the electron beam and the number of scans. Further, since the luminance information of each pixel includes a noise component, the area obtained by counting pixels extracted from the luminance information in units of pixels with a predetermined luminance threshold becomes inaccurate.
- FIG. 1 is a diagram showing a part L of the edge of a contact hole on a coordinate P in pixel units.
- the shaded pixels in Figure 1 are used to calculate the area of the contact hole where the brightness value is less than the predetermined reference value.
- a pixel of a given size cannot faithfully represent an edge.
- pixel SP2 in FIG. 1 includes both inside and outside contact holes. Therefore, if pixel SP2 is included in the area, the area value will also be inaccurate.
- the luminance information represented by each pixel includes a noise component. Therefore, if the SZN ratio is poor, the luminance information becomes unstable, and the pixels selected near the edge for each measurement are not always the same, and the reproducibility of the area value becomes poor.
- the luminance data value of pixel NP2 may be greater than a predetermined reference value for some measurement values, but may be smaller than the reference value for another measurement.
- Patent Document 1 Japanese Patent Laid-Open No. 5-296754
- Patent Document 2 Japanese Patent Laid-Open No. 2003-33845
- the present invention has been made in view of the problems of the prior art, and the object is to To provide a pattern dimension measuring apparatus and a pattern area measuring method capable of measuring an area with good reproducibility and accuracy.
- the above-described problem is based on the means for irradiating the sample while scanning the electron beam on the sample, and the electron amount of the electron generated on the sample by which the pattern is formed by irradiation of the electron beam.
- Means for acquiring pattern image data, and dividing the pattern into a plurality of partial patterns, calculating the area of each partial pattern, and adding the areas of the partial patterns to calculate the area of the pattern This is solved by a pattern measuring device having a measuring means.
- a line profile creating means for creating a line profile representing a luminance signal on a predetermined line from the image data, and a differential profile obtained by differentiating the line profile.
- Differential area creating means for creating, and the area measuring means divides the pattern into sector-shaped partial patterns having a central angle of a predetermined value, and the center of the pattern and the pattern for each partial pattern.
- An edge position is detected from the line profile and differential profile on the line that intersects the edge of the pattern, the radius of the center position and the edge position is calculated, the area of each partial pattern is calculated, and the area of each partial pattern is calculated. It is also possible to calculate the area of the pattern by adding up the areas.
- the center of the pattern may be the average of a predetermined number of pixel data to create a line profile on the line.
- the center of the pattern is the width in the X direction of the pattern and the Y direction of the pattern. It may be calculated from the width of.
- the rectangular pattern is A line on a line that divides one opposing edge into partial rectangular patterns divided into a predetermined length and is parallel to the second opposing edge and intersects the first opposing edge for each partial rectangular pattern.
- Profile and differential profile force Calculate the distance between the first opposing edges, multiply the predetermined length by the distance, calculate the area of the partial rectangular pattern, and sum the areas of the partial rectangular patterns.
- the area of the rectangular pattern may be calculated.
- the pattern is divided into a predetermined number of partial patterns, the area is measured for each partial pattern, and then the total is used as the pattern area.
- the line profile on the line connecting the center position and the edge is obtained, the edge position is obtained from the obtained line profile, and the radius is obtained from the center position and the edge position.
- the line profile is obtained by averaging the luminance data of multiple pixels. Then, the fan-shaped area with the edge position as the point where the arc and radius intersect is obtained.
- the area of the edge is obtained by detecting the edge position with a reduced noise value, so the area can be calculated with good reproducibility. Is possible.
- the area measuring means detects edge positions around the pattern at predetermined intervals, and is determined by the detected two adjacent edge positions. Subtract the total area of trapezoidal areas other than the partial pattern determined by the detected two consecutive edge positions from the total area of the trapezoidal area including the partial pattern into which the pattern is divided. The area of the pattern may be calculated. Further, a line profile creating means for creating a line profile representing a luminance signal on a predetermined line from the image data, and a differential profile obtained by differentiating the line profile. Differential area creating means for creating, and the area measuring means detects an edge position of the pattern and detects a starting point error.
- the edge position force of the starting point is detected as an edge position at a predetermined distance to be a temporary edge position, and a line that passes through the midpoint of the line segment connecting the starting edge position and the temporary edge position and is perpendicular to the line segment.
- the upper line profile and differential profile force also detect the edge position, and detect the edge position around the pattern at a predetermined interval by detecting the edge position as a new starting edge position and detecting a new edge position adjacent to the edge position. You may make it detect with.
- the edge position around the pattern is automatically detected, and the trapezoidal rule is applied based on the detected edge position.
- the area of the pattern is calculated. This reduces the burden on the user who specifies the target range, and prevents a decrease in measurement accuracy due to incorrect range specification. wear.
- the line profile force on the line orthogonal to the straight line connecting the detected edge position and the temporary edge position at a predetermined interval at the intermediate position also changes to the next edge position. Detected.
- an edge can be detected on a line near a right angle to the periphery of the pattern, so that an accurate edge position can be detected and a pattern area can be accurately calculated.
- a pattern area measuring method implemented in the pattern dimension measuring apparatus according to the above aspect.
- the pattern area measuring method is based on means for irradiating an electron beam while scanning the sample, and the amount of electrons of the electron generated on the sample by which the pattern is formed by the irradiation of the electron beam.
- a means for acquiring image data of the pattern a line profile creating means for creating a line profile representing a luminance signal on a predetermined line, and a differential profile for differentiating the line profile to create a differential profile.
- a step of obtaining an image of a pattern of a measurement target region a step of dividing the pattern into a plurality of partial patterns, a step of calculating an area of each partial pattern, The area of each partial pattern is summed to calculate the area of the pattern.
- Tsu characterized in that it comprises a flop.
- the step of dividing the pattern into the partial patterns includes a step of dividing the pattern into sector-shaped partial patterns having a central angle of a predetermined value, and for each partial pattern. Generating a line profile on a line that intersects the pattern center and the pattern edge, differentiating the line profile to create a differential profile, and the line profile and the differential profile file part. Detecting the edge position of the pattern, and calculating the radius from the center position and the edge position.
- the pattern may be a rectangular pattern surrounded by the first and second edges facing each other.
- the step of dividing into partial patterns comprises the step of: Dividing into partial rectangular patterns separated by a predetermined length, and creating a line profile on the line that intersects the second opposing edge and intersects the first opposing edge for each partial rectangular pattern You A step of differentiating the line profile to create a differential profile; and detecting an edge position of the partial pattern from the line profile and the differential profile, and detecting an edge position of the line profile and the differential profile Detecting a position and calculating a distance between the edges.
- the step of dividing the pattern into partial patterns includes detecting an edge position of the pattern as a starting edge position, and detecting an edge at a position separated by a predetermined distance from the starting edge position force as a temporary edge position.
- Creating a line profile on a line passing through the midpoint of the line segment connecting the starting edge position and the temporary edge position and perpendicular to the line segment, and creating a differential profile by differentiating the line profile A step of detecting an edge position based on the line profile and the differential profile cover, and a new edge position adjacent to the edge position by detecting the edge position as a new starting edge position and detecting the edge position.
- the pattern is divided by the step of detecting the edge position around the edge and the two adjacent edge positions. Dividing the trapezoidal region including the partial pattern, and calculating the area of the pattern includes calculating the trapezoidal region other than the partial pattern from the total area of the trapezoidal region including the partial pattern. It may be a step of subtracting the total area of the shape area.
- FIG. 1 is a diagram for explaining the problems of conventional area measurement.
- FIG. 2 is a configuration diagram of a scanning electron microscope used in an embodiment of the present invention.
- FIGS. 3 (a) to 3 (d) are explanatory diagrams of electronic images and profiles acquired by the signal processing unit.
- FIGS. 4 (a) and 4 (b) are diagrams for explaining the detection of the center position of the contact hole.
- FIGS. 5 (a) to 5 (c) are diagrams (part 1) for explaining edge detection of a contact hole.
- FIG. 6 is a diagram (part 2) for explaining edge detection of a contact hole.
- FIG. 7 is a diagram for explaining the calculation of the contact hole area.
- FIG. 8 is a flowchart showing an example of a process for calculating the area of a contact hole.
- FIG. 9 is a diagram for explaining measurement of corner rounding.
- FIG. 10 is a flowchart showing an example of a corner rounding measurement process.
- FIG. 11 (a) is a diagram illustrating a conventional method for calculating the area of a rectangular pattern.
- FIG. 11 (b) is a diagram for explaining a method of calculating the area of the rectangular pattern of this embodiment.
- FIG. 12 is a flowchart showing an example of processing for calculating the area of a rectangular pattern.
- FIGS. 13A to 13C are diagrams showing an example of an arbitrary shape pattern.
- FIG. 14 is a diagram (part 1) illustrating a method for measuring the area of an arbitrarily shaped pattern.
- FIG. 15 is a diagram (part 2) illustrating a method for measuring the area of an arbitrarily shaped pattern.
- FIG. 16 is a flowchart showing an outline of a process for calculating an area of an arbitrary shape pattern.
- FIG. 17 is a flowchart showing an example of processing for detecting the start position of edge detection in FIG.
- FIG. 18 is a flowchart showing an example of processing for detecting edge positions around the pattern in FIG.
- FIG. 19 is a diagram for explaining a method of detecting edge positions around a pattern.
- FIG. 20 is a diagram (No. 3) for explaining the method of measuring the area of an arbitrarily shaped pattern.
- FIG. 2 is a configuration diagram of the scanning electron microscope according to the present embodiment.
- the scanning electron microscope 100 includes an electronic scanning unit 10, a signal processing unit 30, and an image display unit 4 0, a storage unit 55, and a control unit 20 that controls each of the electronic scanning unit 10, the signal processing unit 30, the image display unit 40, and the storage unit 55.
- the control unit 20 includes a profile creation unit 21, a fine profile creation unit 22, an edge detection unit 23, and an area measurement unit 24.
- the electronic scanning unit 10 includes an electron gun 1, a condenser lens 2, a deflection coil 3, an objective lens 4, a moving stage 5, and a sample holder 6.
- the charged particle 9 irradiated from the electron gun 1 is irradiated to the sample 7 on the moving stage 5 through the condenser lens 2, the deflection coil 3, and the objective lens 4.
- the charged particle 9 (primary electron beam) is irradiated onto the sample 7 while being scanned two-dimensionally, and secondary electrons emitted from the irradiated part are detected by an electron detector 8 composed of a scintillator or the like. It is.
- the detected amount of secondary electrons is converted into a digital amount by the AD converter of the signal processing unit 30 and stored in the storage unit 55 as image data.
- the image data is converted into a luminance signal and displayed on the image display unit 40.
- the image data is arranged on the two-dimensional array so as to have the same arrangement as the scanning position of the primary electron beam on the sample 7, and a two-dimensional digital image is obtained.
- Each picture element (pixel) of this two-dimensional digital image represents luminance data with an information amount of 8 bits.
- the electronic deflection amount of the deflection coil 3 and the image scan amount of the image display unit 40 are controlled by the control unit 20.
- the control unit 20 stores a program for executing line width measurement.
- the profile creating unit 21 creates a line profile representing the luminance signal of the SEM image data in the specified range.
- the line profile represents the luminance signal corresponding to the amount of secondary electrons, and is considered to reflect the cross-sectional shape of the measurement pattern.
- the differential profile creation unit 22 performs first-order differential processing on the line profile.
- the edge detector 23 detects the edge of the pattern from the line profile and the first-order differential profile.
- the area measuring unit 24 measures the area of the specified pattern to be measured.
- the area is calculated in units of pixels that make up the image data, and the actual area is the width of the pixel determined in advance. Calculated according to the correspondence with the actual length.
- a wiring pattern 51 formed on a photomask substrate 50 is used as the sample 7, as shown in FIG. 3A.
- a part of the sample 7 has a planar shape as shown in FIG.
- a portion surrounded by a broken line 52 indicates an observation region of the scanning electron microscope 100.
- Fig. 3 (b) shows the amount of electrons such as secondary electrons obtained by scanning the electron beam on the sample shown in Fig. 3 (a) by the electron detector 8, and the detected amount of electrons is calculated.
- An example of an SEM image converted to a luminance signal and displayed by synchronizing the scanning of the electronic beam and the scanning of the CRT of the display device is shown.
- the SEM image is extracted by specifying the measurement area.
- the measurement area is, for example, an area with a width H force of 00 pixels and a length L. This region is selected by the operator by the upper line marker LM1, the lower line marker LM2, the left line marker LM3 and the right line marker LM4.
- the H direction of the measurement area is divided, and a line profile corresponding to the luminance distribution is obtained for the divided area.
- the noise component can be reduced by performing a smoothing process, for example, with a width of 3 pixels in the length L direction.
- Fig. 3 (c) shows a line profile corresponding to the amount of secondary electrons emitted from the sample obtained when the electron beam is irradiated along the I-I line in Fig. 3 (a). It is a figure. As shown in Fig. 3 (c), the line profile (contrast profile) changes abruptly at the edge of the pattern. In order to find the position that changes rapidly, the line profile is subdivided to find the maximum and minimum peaks of the differential signal.
- the differential signals Dx force before and after the peak are also compensated between the pixels to obtain the differential waveforms CI and C2, and the first peak P1 and the second peak with the resolution of 1Z100 Calculate the peak position of peak P2.
- the width W1 of the line pattern is the difference between the first peak P1 and the second peak P2. It is calculated as the distance between.
- FIG. 4 is a diagram showing an example of a contact hole.
- whether or not the force within the contact hole is determined based on whether the pixel luminance data is larger or smaller than the reference value is divided into a predetermined number of partial patterns (fans in the present embodiment).
- the area of the contact hole is calculated by summing the areas of the partial patterns.
- the area of the contact hole is calculated by calculating the area of 72 sectors and summing these values.
- the center and radius of the contact hole are obtained. First, detection of the center of the contact hole will be described.
- the line profile of the specified region is obtained from the SEM image data of the contact hole.
- the specified area is specified by setting the search area SRx so that the edges on both sides in the X direction of the contact hole are included.
- Line profile force Obtain both edges (XE1, XE2) in the X direction of the contact hole, and set the midpoint as the center Cx in the X direction.
- a search region SRy including edges on both sides in the Cx and Y directions is set, and a line profile of a line in the Y direction passing through Cx is obtained. From this line profile, find the edges (YE1, YE2) on both sides in the Y direction, and set the midpoint as the center Cy in the Y direction. This position is the center C of the contact hole.
- This radius is obtained as the distance between the center C and its edge by detecting the position of the edge of the contact hole.
- FIG. 5 (a) is a diagram in which a part of the edge portion EL of the contact hole is represented on a pixel unit coordinate P representing a luminance signal capable of obtaining SEM image power.
- the S1-S2 lines in Fig. 5 (a) are reference lines for profile creation. If a line profile is created along this reference line, for example, a signal waveform as shown in FIG. 5 (b) can be obtained. The signal amount value at the point S1 side is smaller than the signal amount value at the point S2 side, and the signal amount changes abruptly at the point E1.
- Figure 5 (c) shows the result of differentiating the line profile of Figure 5 (b). The maximum peak of the differential signal amount is obtained at point E1, and the position of point E1 is on the S1-S2 line. Is detected. At this time, similar to the line width measurement, it complements between multiple differential signal power pixels before and after the peak, and calculates the peak position with 1Z100 resolution.
- Line SL in Fig. 6 is the reference line for profile creation.
- Line ASL is an averaging reference line for obtaining pixels used for averaging luminance values.
- Luminance data at each position on the reference line SL is calculated for each pixel along the reference line SL for creating a line profile.
- the brightness is calculated by averaging the brightness data of 5 pixel ASPs along the average reference line ASL in the direction perpendicular to the reference line SL, which is obtained only by the brightness data of the pixel SP corresponding to the reference line SL. Yes.
- Pixel selection uses the X axis as the reference axis when the inclination angle of the reference line SL for obtaining the profile is 45 degrees or less, and the Y axis as the reference axis when the inclination angle is 45 degrees or more. If the reference axis is the X axis, the pixels corresponding to the reference line SL are not slacked at the same X position, so that all X positions are! ⁇ Make a selection.
- the reference axis of the reference line SL is the X axis
- the reference axis of the average reference line ASL is the Y axis
- the center of the pixel is the most to the average reference line ASL so that it does not dangle at the same Y position.
- Select a close pixel In the case of Fig. 6, the reference axis for obtaining 5 pixels is the Y axis, and the pixel (ASP) is selected so that the center of the pixel is closest to the reference line so that it does not hang around at the same Y position.
- the luminance data of a plurality of pixels is added and averaged.
- the luminance data of each pixel includes a random noise component. This is because the value is different for each measurement and reproducible measurement cannot be performed. Therefore, noise is reduced by averaging the luminance data of a plurality of pixels.
- the number of pixels for averaging the luminance data is not limited to 5 pixels, and the number of pixels may be increased. If the SZN ratio is good, the number of pixels may be decreased.
- FIG. 7 is a diagram for explaining calculation of the area of the entire contact hole.
- the edge is detected by rotating the reference line for each predetermined central angle, and the area of the partial pattern is obtained for the entire range of the contact hole.
- the partial pattern is not a sector but a straight part, it is regarded as a triangular area based on the center position C, the edge position E1, and the center angle of 5 degrees.
- a line profile is created in the direction around the central force using a plurality of pixel values, and the edge position is detected by differentiating the line profile. Since multiple pixel values are used, noise can be reduced even if the signal-to-noise ratio is poor, and the inter-pixel interpolation is complemented with multiple pixel values and calculated to a resolution of 1/100 pixel. The value does not vary greatly every time. Therefore, the area can be obtained with good reproducibility.
- the area is calculated in units of pixels, and pixels including the inside and outside of the area to be measured on the edge are included or not included in the area in units of pixels. For this reason, it was hard to measure accurately.
- the error can be reduced without using the pixel unit.
- FIG. 8 is a flowchart showing an example of a process for measuring the area of a pattern such as a contact hole.
- step S 11 initial setting is performed.
- the setting of the center angle corresponding to the number of partial patterns and the area for calculating the line profile are specified.
- step S12 a contact hole and a desired measurement area around it are specified, and an SEM image is acquired.
- the SEM image data is extracted from the storage unit 55 stored as pixel data.
- step S13 the center position of the contact hole whose area is to be measured is detected.
- the center position is detected as follows. First, a line profile in the X direction is obtained, and edges at both ends in the X direction are detected. The midpoint of those edge positions is the center in the X direction. After finding the center in the X direction, find the line profile in the Y direction of the line including the position, and detect the edges at both ends in the Y direction. The center of this edge position is the center of the contact hole. After obtaining the center in the Y direction, the center in the X direction and the center in the Y direction may be obtained again to obtain the center position with high accuracy.
- step S 14 a search area having a predetermined height including the center position of the contact hole and the edge of the contact hole is designated. It is also possible to set the size of the search area based on the contact hole data extracted in advance from the design data and automatically set the center position of the contact hole. ,.
- step S15 a line profile is obtained in the designated search area.
- luminance data is calculated from pixel data for each pixel in the direction from the center of the contact hole to the edge.
- the height of the search area is 5 pixels, and the luminance data is obtained by averaging the luminance data of 5 pixels to reduce the noise of the luminance data.
- step S16 the line profile calculated in step S15 is firstly subdivided.
- the first-order differential processing is performed by a differential profile creation unit, for example, using a differential filter such as a Sobel filter used in general image processing.
- a differential filter such as a Sobel filter used in general image processing.
- step S17 the radius is obtained from the center position and edge position of the contact hole.
- step S18 the area of a sector (partial pattern) having the obtained edge position as a point where the arc and the radius intersect is calculated.
- step S19 it is determined whether or not the partial pattern area has been calculated for the entire range of contact holes. If it is determined that all ranges have been calculated, step S
- step S20 all of the calculated partial areas are summed to obtain a contact hole.
- the area of the image is calculated, and this process is terminated.
- step S21 the search area is rotated by a predetermined center angle, and the line profile file reference line is rotated.
- the process goes to step S15, where the line profile is acquired along the new line profile reference line to detect the edge, and the area of the partial pattern is calculated with the edge position as the point where the arc and radius intersect. To do.
- the pattern is divided into a predetermined number of partial patterns, and the area is measured for each partial pattern and then added to obtain the pattern area. .
- the line profile on the line connecting the center position and the edge is obtained, the edge position is obtained from the obtained line profile, and the radius is obtained from the center position and the edge position.
- the line profile is obtained by averaging the luminance data of multiple pixels. Then, the fan-shaped area whose edge position is the point where the arc and radius intersect is obtained.
- the rounding of the corners of the pattern is a phenomenon in which the corners of the pattern P to be formed are not formed at right angles but are rounded.
- a pattern P is formed as an electrode of a capacitor
- a desired capacitance value may not be obtained. It is required to accurately determine the value of the portion (area loss) AL where such a pattern is not formed.
- FIG. 9 An area measurement method for the area loss AL will be described with reference to FIGS. 9 and 10.
- step S31 initial setting is performed.
- the center angle corresponding to the number of partial patterns when calculating the area of the corner rounding area is set.
- the ROI size that specifies the area for calculating the line profile.
- step S32 SEM image data of the corner rounding region is acquired. To get.
- the SEM image data is extracted from the storage unit 55 stored as pixel data.
- step S33 the center position of the corner rounding region is set.
- the center position is set to the position (cl, c2) where the diagonal corner of ROIc touches the edge of the pattern shown in Fig. 9, and the corner (c3) of ROIc in the pattern is a sector shape that forms the corner part clc2c3.
- step S34 a search region including the center c3 and the edge of the rounding portion is set.
- step S35 a line profile is calculated within the search area.
- step S36 the edge position is detected.
- the line profile calculated in step S35 is first-order differentiated to detect the position force that takes the maximum or minimum signal amount.
- step S37 the radius is calculated from the center position c3 and the edge position.
- step S38 the area of a sector (partial pattern) having a predetermined central angle is calculated.
- step S39 it is determined whether or not the force is the calculated force of all the partial patterns in the corner rounding region. If it is determined that the areas of all the partial patterns have been calculated, the process proceeds to step S40. If not, the process proceeds to step S41.
- step S49 the areas of all the partial patterns are summed up to calculate the area of the corner loading part (clc2c3), and this process is terminated.
- step S41 the search area is rotated by a predetermined center angle, and the process proceeds to step S35.
- the area of the corner rounding part clc2c3 is subtracted from the area of ROI obtained by multiplying the distance of clc3 and the distance of c2c3.
- the area of the area loss part AL is calculated.
- the area of the corner rounding part can be calculated with good reproducibility and with high accuracy, so the area of the area loss part AL can be calculated with good reproducibility and with high precision. Can be issued.
- the configuration of the pattern dimension measuring apparatus that measures the area is the same as that of the apparatus described in the first embodiment, and the processing of the area measuring unit that calculates the area is different.
- FIG. 11 (a) is a diagram illustrating a conventional method for calculating the area of a rectangular pattern.
- a part of the rectangular pattern RP is shown on the coordinates P in pixels.
- the pixel SP4 is included both inside and outside the rectangular pattern, and the pixel SP4 is included in the area. It is included or not included, and the area cannot be obtained with high accuracy.
- the pixel includes noise.
- the pixel SP3 may be included in the area when one measurement is performed, and may not be included in the area when another measurement is performed.
- FIG. 11B is a diagram for explaining an outline of a method for calculating the area of the rectangular pattern (pattern surrounded by the first and second edges) of the present embodiment.
- the rectangular pattern RP is divided into partial rectangular patterns of a predetermined size, the area of each partial rectangular pattern is calculated, and then the areas of the partial rectangular patterns are summed to calculate the area of the rectangular pattern. .
- the division unit is, for example, the height in the Y direction for h pixels (predetermined length separating the first opposing edge), and the line profile in the X direction of the partial rectangular pattern PRP1 (second opposing).
- the line profile on the line that is parallel to the edge and intersects the first opposing edge is calculated, and the edge positions on both sides are calculated to determine the distance xl in the X direction.
- the area of the partial rectangular pattern PRP1 is calculated by multiplying the distance xl and the height h.
- the area of other partial rectangular patterns is calculated in the same way.
- step S51 initialization is performed.
- the ROI size corresponding to the height of the partial rectangular pattern is set.
- step S52 a rectangular pattern and a desired measurement area around it are specified, and an SEM image is acquired.
- the SEM image data is extracted from the storage unit 55 stored as pixel data.
- step S53 the SEM image data acquired in step S52 is divided into a predetermined number of regions. This is done by setting a search area in which the height of the partial rectangle is a predetermined height.
- step S54 a line profile is calculated in the range of the search area set in step S53.
- the calculation of the line profile is performed by the profile creation unit 21 of the control unit 20 extracting luminance information from the SEM image data.
- step S55 the line profile calculated in step S54 is firstly subdivided.
- the first-order differential processing is performed by the differential profile creation unit 22.
- the position where the maximum and minimum signal values are obtained is recorded as the edge position.
- step S56 the width of the partial rectangle is calculated from the edge position.
- step S57 the calculated partial rectangle width is multiplied by the height of the search region to calculate the area of the partial rectangular region.
- step S58 it is determined whether or not the force has calculated the area of all the partial rectangles in the measurement region. If it is determined that the area of all the partial rectangles has been calculated, the process proceeds to step S59. If it is determined that the area has not been calculated, the process proceeds to step S60.
- step S59 the area of the designated rectangular area is calculated by summing the areas of the calculated partial rectangles, and this process ends.
- step S60 the search area is moved by a predetermined height, and the process returns to step S54 to calculate the area of the partial rectangle.
- the area is calculated for each divided part, and the area of the designated area is calculated by summing them, but after calculating the average width of the rectangular pattern based on the divided area, The area may be obtained by multiplying the width by the height of the entire designated area.
- the rectangular pattern is divided into a predetermined number of partial patterns, the area is obtained for each partial pattern, and then the total is added to determine the area of the rectangular pattern. Is calculated.
- the edge position is calculated based on the line profile by averaging the predetermined number of pixel data.
- the area of the partial pattern is calculated by multiplying the distance between edges by a predetermined number of pixel sizes.
- FIG. 13 is a diagram showing an example of a pattern having a complicated shape.
- the pattern is divided into the shapes of the patterns targeted in the first and second embodiments (hereinafter referred to as reference graphic patterns), and the respective areas are divided. After calculation, the total area is calculated.
- the reference graphic pattern includes a fan-shaped pattern (0 in FIG. 13) and a semicircular pattern (in FIG. 13).
- the pattern has a shape as shown in Fig. 14, first, it is divided into reference graphic patterns. The division is performed so that the reference graphic pattern is included. For example, the oc 1 part in Fig. 14 makes the specified area ROI3. In addition, in ⁇ 1 in Fig. 14, the designated area is ROI1. In addition, in ⁇ 2 in FIG. 14, the designated area is set to ROI4.
- the boundary BL3 between ROI1 and ROI3 is specified to match each other.
- the boundary BL2 between ROI 3, ROI1 and ROI2 and ROI4 is specified so that there is no deviation from each other.
- the area of the pattern a 1 is calculated using the method for measuring the area of the corner portion described in the corner rounding measurement of the first embodiment.
- the areas of the patterns ⁇ 1 and ⁇ 2 in FIG. 14 are calculated using the rectangular pattern area measurement method described in the second embodiment.
- the area of the pattern of / 3 in FIG. 13 is calculated by correcting the corner rounding described in the second embodiment. In corner rounding, the force was for one corner.
- the pattern 13 in Fig. 13 is semicircular and has two corners. In this case, the center is the midpoint of the boundary line with the adjacent partial pattern.
- the area of each pattern is summed to obtain the area of the pattern. Yes.
- the area is obtained for each partial pattern by dividing it into partial patterns.
- the edge position is calculated based on the line profile obtained by averaging the predetermined number of pixel data, and the rectangular length and sector radius are calculated to obtain the area.
- edge positions indicating the periphery of a closed pattern are detected, and the area of the pattern is calculated by applying a trapezoidal rule based on these edge positions.
- the configuration of the pattern dimension measuring apparatus for measuring the area is the same as that of the apparatus described in the first embodiment, and the processing of the area measuring unit for calculating the area is different.
- FIG. 16 is a flowchart showing an outline of pattern area measurement processing.
- the edge detection start position is detected, and in the next step S72, edge positions around the pattern are detected at predetermined intervals. Based on the detected edge position, the area of the pattern is calculated in step S73.
- FIG. 17 is a flowchart showing a process for detecting the edge of the start position.
- one point (point M in FIG. 15) in the region of the measurement target pattern PA is designated as a designated point.
- an arbitrary point inside the pattern PA is designated based on the SEM image of the pattern PA whose area is to be measured.
- a line passing from the designated point M through the point that intersects the edge of the pattern PA is set and used as a reference line for profile creation. For example, a line extending 45 degrees upward from the specified point M is set as the reference line.
- a line profile is calculated along the reference line.
- the calculation of the line profile is performed by the profile creation unit 21 of the control unit 20 extracting luminance information from the SEM image data.
- the luminance data of a plurality of pixels are obtained by averaging.
- the calculated line profile is first-order differentiated by the derivative profile creation unit 22.
- the edge position is detected by detecting the position where the partial peak value closest to the specified point M takes the plus peak value or minus peak value based on the first-order differentiated profile. .
- This edge position is used as a start position for edge detection around the pattern.
- FIG. 18 is a flowchart showing an example of edge detection processing around the pattern.
- FIG. 19 is a diagram for explaining edge detection around a pattern.
- step S91 in FIG. 18 initial setting is performed.
- a predetermined interval for detecting the edges around the pattern (hereinafter referred to as a specified step) is specified.
- this designation step is a distance corresponding to a predetermined number of pixels. Also, check the pattern surroundings.
- the counter k indicating the position of the outgoing edge is set to 0.
- step S92 to step S94 the edge position of the start position ES force is also detected at a position separated by a predetermined designated step d.
- step S92 a temporary edge is detected at a position separated from the start position ES detected by the process of FIG. 17 by a distance of (designated step d X 2).
- a straight line VL from the start position ES to the lower part (one Y direction) of FIG. 19 (a) is orthogonal to the position of (specified step d X 2).
- line HL as a reference line for profile creation, create a line profile file and detect edge E. This detected edge E is used as the temporary detection edge.
- the edge may be detected in the X direction from the start position ES.
- the temporary detection edge E detected in step S92 is re-detected.
- the line that is perpendicular to the position d x 2) is the reference line for profile creation.
- the line profile on the reference line is obtained, and the temporarily detected edge position is detected again.
- the distance from the start position ES is made closer to (specified step d X 2).
- the first edge position is detected.
- Edge EP is detected as the edge. Detecting edge EP (X, y) like this
- the edge can be detected on a line near a right angle around the pattern, so that the edge position can be accurately detected.
- the edge EP (x, y) is set as the starting point for the next edge detection.
- the starting point is the edge EP.
- step S96 to step S98 the specified step k k k is determined from the starting edge position EP (x, y).
- step S96 on the straight line IL connecting the starting point EP and the re-detected temporary detection edge E. Produce an orthogonal line at a position (designated step d X 2) away from the starting point EP of
- An edge is detected by creating a line profile as a reference line for creating a file. This detected edge is assumed to be a temporary detection edge E.
- step S97 as in step S94, the starting point EP and the provisional detection edge position E
- step dX 2 Directly at a position on the straight line connecting 21 and a distance of (designated step dX 2) from the starting point EP
- the intersecting line is used as a reference line for profile creation, a line profile on this reference line is obtained, and the temporarily detected edge position is detected again.
- the start point EP is directly connected to the re-detected temporary detection edge position E.
- the line profile is obtained on a line orthogonal to the line IL and the intermediate position MP.
- the EP is detected.
- the edge EP is detected as the second edge.
- step S99 it is determined whether or not all edges around the pattern have been detected. If it is determined that all have been detected, this process ends. If it is determined that the detection has not yet ended, the process proceeds to step S100.
- the edge positions around the pattern are EP, EP,.
- the area of the pattern is calculated by applying the edge position to the trapezoidal rule.
- the area S of the pattern is calculated by the following equation (1).
- the partial pattern of the pattern PA is defined by adjacent edges EP and EP.
- a trapezoidal area (X X EP EP) containing PPA is defined. So adjacent
- the area of the pattern is calculated by adding or subtracting the area of the trapezoidal shape determined by the edge.
- the area of the shape is the area PPA (parts where the pattern PA is divided like the area (X X EP EP).
- the area is calculated by combining the area not including the pattern) and the area not including the pattern.
- the trapezoidal area defined by the edge position from T to T below the pattern PA
- the area of the region not including the pattern PA is calculated.
- the area of the region is added and specified by the edge position from T to T below the pattern P A
- the area of the pattern PA is calculated by subtracting the area of the trapezoidal area.
- the value of the trapezoidal shape in the range of the X-coordinate value force X -X> 0 of the edge position is k k-1
- the area of the pattern can be calculated by the above method. That is, for the areas of Al, A2, A3, and A4 in FIG. 20, areas A3 and A4 are added twice, and area A4 is subtracted twice. Therefore, since the areas of the areas A1 and A3 are finally calculated in the areas A1 to A4, the area of the pattern PA can be calculated.
- the edge position around the pattern is automatically detected, Based on the detected edge position, the trapezoidal rule is applied to calculate the pattern area.
- the burden on the user who designates the target range can be reduced, and a decrease in measurement accuracy due to an erroneous range designation can be prevented.
- the edge of the pattern is detected based on the line profile by averaging the predetermined number of pixel data. As a result, even if the luminance signal of the pixel contains noise, the position of the edge can be detected with a reduced noise value. Also, when detecting the edges around the pattern, the line profile force on the line that intersects the straight line connecting the detected edge position and the temporary edge position at a predetermined interval and the intermediate position also detects the next edge position. Yes. As a result, an edge can be detected on a line near a right angle to the periphery of the pattern, so that an accurate edge position can be detected and a pattern area can be accurately calculated.
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020077021997A KR100933819B1 (ko) | 2006-09-14 | 2007-07-17 | 패턴 치수 측정 장치 및 패턴 면적 측정 방법 |
JP2007537646A JP4580990B2 (ja) | 2006-09-14 | 2007-07-17 | パターン寸法測定装置及びパターン面積測定方法 |
DE112007000009T DE112007000009B4 (de) | 2006-09-14 | 2007-07-17 | Musterdimensionsmessgerät und Musterflächenmessverfahren |
CNA200780034004XA CN101523155A (zh) | 2006-09-14 | 2007-07-17 | 图案尺寸测定装置和图案面积测定方法 |
TW096133689A TWI344188B (en) | 2006-09-14 | 2007-09-10 | Pattern dimension measuring apparatus and pattern area measuring method |
US11/903,083 US8014584B2 (en) | 2006-09-14 | 2007-09-20 | Pattern dimension measuring apparatus and pattern area measuring method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/318287 WO2008032387A1 (fr) | 2006-09-14 | 2006-09-14 | Dispositif de mesure de dimension de motif et procédé de mesure de superficie de motif |
JPPCT/JP2006/318287 | 2006-09-14 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/903,083 Continuation US8014584B2 (en) | 2006-09-14 | 2007-09-20 | Pattern dimension measuring apparatus and pattern area measuring method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008032488A1 true WO2008032488A1 (fr) | 2008-03-20 |
Family
ID=39183460
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/318287 WO2008032387A1 (fr) | 2006-09-14 | 2006-09-14 | Dispositif de mesure de dimension de motif et procédé de mesure de superficie de motif |
PCT/JP2007/064082 WO2008032488A1 (fr) | 2006-09-14 | 2007-07-17 | Dispositif de mesure de taille de motif et procédé de mesure de superficie de motif |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/318287 WO2008032387A1 (fr) | 2006-09-14 | 2006-09-14 | Dispositif de mesure de dimension de motif et procédé de mesure de superficie de motif |
Country Status (7)
Country | Link |
---|---|
US (1) | US8014584B2 (ja) |
JP (1) | JP4580990B2 (ja) |
KR (1) | KR100933819B1 (ja) |
CN (1) | CN101523155A (ja) |
DE (1) | DE112007000009B4 (ja) |
TW (1) | TWI344188B (ja) |
WO (2) | WO2008032387A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010236978A (ja) * | 2009-03-31 | 2010-10-21 | Hitachi High-Technologies Corp | パターン寸法算出方法、画像解析方法及び装置 |
JP2010276504A (ja) * | 2009-05-29 | 2010-12-09 | Toshiba Corp | パターン輪郭検出方法 |
WO2011052070A1 (ja) * | 2009-10-30 | 2011-05-05 | 株式会社アドバンテスト | パターン計測装置及びパターン計測方法 |
JP2014016361A (ja) * | 2013-09-25 | 2014-01-30 | Hitachi High-Technologies Corp | パターン寸法算出方法、及び画像解析装置 |
JP2017150941A (ja) * | 2016-02-24 | 2017-08-31 | アイシン精機株式会社 | 車両用操作入力検出装置 |
JP6417071B1 (ja) * | 2018-02-28 | 2018-10-31 | 株式会社東日本技術研究所 | Fhの画像診断システム及び画像診断方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4511303B2 (ja) * | 2004-10-05 | 2010-07-28 | 株式会社日立ハイテクノロジーズ | 荷電粒子線装置および寸法測定方法 |
US7587098B2 (en) * | 2005-07-14 | 2009-09-08 | Mavs Lab. Inc. | Pixel data generating method |
WO2009113149A1 (ja) * | 2008-03-10 | 2009-09-17 | 株式会社アドバンテスト | パターン測長装置及びパターン測長方法 |
TWI393854B (zh) * | 2008-09-01 | 2013-04-21 | Univ Ishou | The method of the optical system to measure the actual contact area of the |
JP5642108B2 (ja) * | 2012-04-09 | 2014-12-17 | 株式会社アドバンテスト | パターン測定方法及びパターン測定装置 |
KR102078809B1 (ko) * | 2013-10-08 | 2020-02-20 | 삼성디스플레이 주식회사 | 패턴의 선폭 측정 장치 및 그 방법 |
JP2017096625A (ja) * | 2014-02-21 | 2017-06-01 | 株式会社日立ハイテクノロジーズ | パターン測定装置、及びコンピュータープログラム |
JP6399873B2 (ja) * | 2014-09-17 | 2018-10-03 | 株式会社荏原製作所 | 膜厚信号処理装置、研磨装置、膜厚信号処理方法、及び、研磨方法 |
CN106949830A (zh) * | 2016-06-24 | 2017-07-14 | 广州市九州旗建筑科技有限公司 | 一种成像系统内置标尺的测试技术及其计算方法与应用 |
KR20180033367A (ko) | 2016-09-23 | 2018-04-03 | 삼성전자주식회사 | 패턴 측정 방법 및 그를 포함하는 반도체 소자의 제조 방법 |
KR20220123467A (ko) * | 2020-02-20 | 2022-09-06 | 주식회사 히타치하이테크 | 패턴 매칭 장치, 패턴 측정 시스템 및 비일시적 컴퓨터 가독 매체 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6321844A (ja) * | 1986-07-15 | 1988-01-29 | Jeol Ltd | コンタクトホ−ルの測定方法 |
JPH0727548A (ja) * | 1993-07-14 | 1995-01-27 | Hitachi Ltd | ホールパターン形状評価装置 |
JP2001091231A (ja) * | 1999-09-22 | 2001-04-06 | Toshiba Corp | 微細パターン測定方法、微細パターン測定装置及び微細パターン測定プログラムを記録した記録媒体 |
US6724947B1 (en) * | 2000-07-14 | 2004-04-20 | International Business Machines Corporation | Method and system for measuring characteristics of curved features |
JP2005322709A (ja) * | 2004-05-07 | 2005-11-17 | Sony Corp | パターン検出装置及びパターン検出方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05296754A (ja) | 1992-04-17 | 1993-11-09 | Nikon Corp | エッジ検出方法 |
JPH09320505A (ja) * | 1996-03-29 | 1997-12-12 | Hitachi Ltd | 電子線式検査方法及びその装置並びに半導体の製造方法及びその製造ライン |
JP2001183116A (ja) * | 1999-12-24 | 2001-07-06 | Toppan Printing Co Ltd | マスクパターン形状計測方法 |
JP3640178B2 (ja) | 2001-07-16 | 2005-04-20 | 日産自動車株式会社 | 鋳造品の成形方法と鋳造品 |
JP3686367B2 (ja) * | 2001-11-15 | 2005-08-24 | 株式会社ルネサステクノロジ | パターン形成方法および半導体装置の製造方法 |
US6909791B2 (en) * | 2002-04-03 | 2005-06-21 | General Phosphorix, Llc | Method of measuring a line edge roughness of micro objects in scanning microscopes |
-
2006
- 2006-09-14 WO PCT/JP2006/318287 patent/WO2008032387A1/ja active Application Filing
-
2007
- 2007-07-17 CN CNA200780034004XA patent/CN101523155A/zh active Pending
- 2007-07-17 JP JP2007537646A patent/JP4580990B2/ja active Active
- 2007-07-17 KR KR1020077021997A patent/KR100933819B1/ko not_active IP Right Cessation
- 2007-07-17 DE DE112007000009T patent/DE112007000009B4/de not_active Expired - Fee Related
- 2007-07-17 WO PCT/JP2007/064082 patent/WO2008032488A1/ja active Application Filing
- 2007-09-10 TW TW096133689A patent/TWI344188B/zh not_active IP Right Cessation
- 2007-09-20 US US11/903,083 patent/US8014584B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6321844A (ja) * | 1986-07-15 | 1988-01-29 | Jeol Ltd | コンタクトホ−ルの測定方法 |
JPH0727548A (ja) * | 1993-07-14 | 1995-01-27 | Hitachi Ltd | ホールパターン形状評価装置 |
JP2001091231A (ja) * | 1999-09-22 | 2001-04-06 | Toshiba Corp | 微細パターン測定方法、微細パターン測定装置及び微細パターン測定プログラムを記録した記録媒体 |
US6724947B1 (en) * | 2000-07-14 | 2004-04-20 | International Business Machines Corporation | Method and system for measuring characteristics of curved features |
JP2005322709A (ja) * | 2004-05-07 | 2005-11-17 | Sony Corp | パターン検出装置及びパターン検出方法 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010236978A (ja) * | 2009-03-31 | 2010-10-21 | Hitachi High-Technologies Corp | パターン寸法算出方法、画像解析方法及び装置 |
JP2010276504A (ja) * | 2009-05-29 | 2010-12-09 | Toshiba Corp | パターン輪郭検出方法 |
WO2011052070A1 (ja) * | 2009-10-30 | 2011-05-05 | 株式会社アドバンテスト | パターン計測装置及びパターン計測方法 |
DE112009002638T5 (de) | 2009-10-30 | 2012-05-16 | Advantest Corp. | Strukturmessgerät und Strukturmessverfahren |
JP5411866B2 (ja) * | 2009-10-30 | 2014-02-12 | 株式会社アドバンテスト | パターン計測装置及びパターン計測方法 |
JP2014016361A (ja) * | 2013-09-25 | 2014-01-30 | Hitachi High-Technologies Corp | パターン寸法算出方法、及び画像解析装置 |
JP2017150941A (ja) * | 2016-02-24 | 2017-08-31 | アイシン精機株式会社 | 車両用操作入力検出装置 |
JP6417071B1 (ja) * | 2018-02-28 | 2018-10-31 | 株式会社東日本技術研究所 | Fhの画像診断システム及び画像診断方法 |
Also Published As
Publication number | Publication date |
---|---|
KR100933819B1 (ko) | 2009-12-24 |
US8014584B2 (en) | 2011-09-06 |
DE112007000009B4 (de) | 2013-01-17 |
TW200822259A (en) | 2008-05-16 |
JP4580990B2 (ja) | 2010-11-17 |
WO2008032387A1 (fr) | 2008-03-20 |
TWI344188B (en) | 2011-06-21 |
JPWO2008032488A1 (ja) | 2010-01-21 |
US20080069452A1 (en) | 2008-03-20 |
CN101523155A (zh) | 2009-09-02 |
DE112007000009T5 (de) | 2008-07-10 |
KR20080041141A (ko) | 2008-05-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4580990B2 (ja) | パターン寸法測定装置及びパターン面積測定方法 | |
US7166840B2 (en) | Method for determining depression/protrusion of sample and charged particle beam apparatus therefor | |
US7590506B2 (en) | Pattern measurement apparatus and pattern measuring method | |
US8330104B2 (en) | Pattern measurement apparatus and pattern measurement method | |
US7269287B2 (en) | Method and apparatus for measuring dimension using electron microscope | |
JP4272121B2 (ja) | Semによる立体形状計測方法およびその装置 | |
JP4223979B2 (ja) | 走査型電子顕微鏡装置及び走査型電子顕微鏡装置における装置としての再現性能評価方法 | |
JP5426497B2 (ja) | パターン測定装置及びパターン測定方法 | |
US8263935B2 (en) | Charged particle beam apparatus | |
US20100196804A1 (en) | Mask inspection apparatus and image creation method | |
KR101808470B1 (ko) | 패턴 측정 장치 및 컴퓨터 프로그램 | |
JP6043528B2 (ja) | パターン測定装置 | |
JP5411866B2 (ja) | パターン計測装置及びパターン計測方法 | |
JP6044182B2 (ja) | 微細パターンの凹凸判定方法 | |
JPH07160884A (ja) | パターン検査システム | |
JPH03179208A (ja) | 寸法測定処理装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780034004.X Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 2007537646 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077021997 Country of ref document: KR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07790844 Country of ref document: EP Kind code of ref document: A1 |
|
RET | De translation (de og part 6b) |
Ref document number: 112007000009 Country of ref document: DE Date of ref document: 20080710 Kind code of ref document: P |
|
WWE | Wipo information: entry into national phase |
Ref document number: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07790844 Country of ref document: EP Kind code of ref document: A1 |