WO2005078775A1 - 計測方法、転写特性計測方法、露光装置の調整方法及びデバイス製造方法 - Google Patents
計測方法、転写特性計測方法、露光装置の調整方法及びデバイス製造方法 Download PDFInfo
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- WO2005078775A1 WO2005078775A1 PCT/JP2005/000205 JP2005000205W WO2005078775A1 WO 2005078775 A1 WO2005078775 A1 WO 2005078775A1 JP 2005000205 W JP2005000205 W JP 2005000205W WO 2005078775 A1 WO2005078775 A1 WO 2005078775A1
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- measurement
- mark
- transfer
- image
- exposure
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70616—Monitoring the printed patterns
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- 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
Definitions
- Measurement method transfer characteristic measurement method, exposure apparatus adjustment method, and device manufacturing method
- the present invention relates to a measurement method, a transfer characteristic measurement method, an exposure apparatus adjustment method, and a device manufacturing method, and more specifically, measures information on a size of a mark formed on an object in at least two directions. Measuring method, Transfer characteristic measuring method for measuring the transfer characteristics of the pattern by the exposure device based on the size of the mark (transferred image of the measuring mark) formed on the object by the exposure device, and using the transfer characteristic measuring method.
- the present invention relates to a method of adjusting an exposure apparatus, and a device manufacturing method using the exposure apparatus adjusted by the adjustment method. Background art
- a semiconductor device such as a liquid crystal display device
- an imaging device such as a CCD
- a thin-film magnetic head or a lithographic apparatus that manufactures microdevices such as micromachines.
- Various types of exposure apparatuses that transfer a pattern formed on a “reticle” onto an object such as a wafer or a glass plate are used.
- a step-and-repeat type reduction projection exposure apparatus a so-called stepper
- a step-and-scan type scanning exposure apparatus a so-called scanner (also referred to as a scanning stepper)
- Etc. are mainly used.
- the in-plane uniformity of the above-mentioned pattern size is greatly affected by the imaging characteristics of the projection optical system.
- the projection optical system has aberrations such as field curvature, spherical aberration, coma aberration, and distortion.
- aberrations such as field curvature, spherical aberration, coma aberration, and distortion.
- the state of formation of an image of a pattern of the same size formed at a different position is different.
- the projection optical system has astigmatism, the formation state of the resist image of the horizontal line pattern and the resist image of the vertical line pattern of the same size will be different.
- the reticle pattern is transferred onto a wafer by an exposure apparatus, and the line width of a resist image formed at substantially the same position on the wafer after the development of the wafer is measured by an SEM for length measurement by a sales company.
- the vertical line pattern resist image and the horizontal line pattern resist image require the pattern line width required for recent exposure equipment. If the controllability specifications (specs) cannot be satisfied, the line width difference is included in the measurement results, and situations that require unexpected time to start up the exposure equipment in the semiconductor factory are frequently occurring. Was.
- the inventor of the present invention has proposed a line between the resist image of the vertical line pattern and the resist image of the horizontal line pattern.
- the above-mentioned measurement results by the SEM for length measurement described above It was confirmed that a line width difference was included.
- the present inventor concluded that the line width difference described above was mostly caused by measurement errors due to some factors, and analyzed a series of processes of line width measurement.
- the combination of image processing including image capture of the resist image by SEM and the subsequent image processing including edge detection processing for that image has the above-mentioned factors that cause the measurement error. It was almost convinced that performing the edge detection processing on an image obtained by rotating only the image of the resist image of the pattern was the main cause of the error.
- the size of a mark formed on an object in at least two directions is considered.
- a measurement method for measuring information wherein a first image capturing step of capturing a first image of the mark by a measuring device in a first state in which the object is set in a reference direction; and the first state In a second state in which at least a part of the mark is rotated by a predetermined angle ⁇ (0 ° ⁇ ⁇ 180 °), a second image capturing step of capturing the second image of the mark by the measuring device;
- the first image of the mark captured by the measuring device is subjected to image processing involving edge detection processing.
- a first size of a mark in a first direction orthogonal to the reference direction is measured, and at least a part of the first state force rotates the mark by a predetermined angle ⁇ (0 ° ⁇ ⁇ 180 °).
- the second image of the mark captured by the measuring device is subjected to image processing including edge detection processing, and the mark is rotated by the angle ⁇ with respect to the first direction of the mark.
- a second size in a second direction is measured. That is, the first and second images are substantially captured by the measuring device according to, for example, the mark arrangement on the object. Since image processing with edge detection processing is performed under the same conditions, it is possible to prevent a reduction in mark size measurement accuracy due to a combination of image capture and image processing.
- a transfer characteristic measuring method for measuring transfer characteristics in two different directions of an exposure apparatus for transferring a pattern formed on a mask onto an object, the exposure apparatus comprising: Forming a mark including first and second elements used for measurement of the transfer characteristics in the two directions on an object by using; and setting the object in a reference direction in a measurement device to perform the first and second steps.
- a first image of at least a part of the mark including one of the second elements is captured, and a rotation angle at the time of capturing the first image is substantially the same as the intersection angle in the two directions ⁇ (0 ° ⁇ ⁇ 180 °), an image capturing step of capturing a second image of at least a part of the mark including the other of the first and second elements; and processing the first and second images, respectively.
- a first transfer characteristic measurement method comprising; a measurement step and measuring.
- a mark including the first and second elements used for measuring the transfer characteristics in two directions is formed on the object using the exposure apparatus.
- the object on which the mark is formed is set in the measuring device in the reference direction, and a first image of at least a part of the mark including one of the first and second elements is captured, and the first image is captured.
- the second image of is captured.
- the first and second images are respectively processed, and first and second sizes of the mark in the two directions are measured, respectively.
- the first and second images are subjected to image processing under substantially the same conditions by the measurement device according to, for example, the arrangement of marks on the object, and image processing is performed. It is possible to prevent a decrease in mark size measurement accuracy caused by a combination with the processing, and as a result, it becomes possible to accurately measure (evaluate) transfer characteristics of the exposure apparatus in two different directions.
- a transfer characteristic measuring method for measuring a transfer characteristic of a pattern by an exposure apparatus for transferring a pattern formed on a mask onto an object, the method comprising: A measurement mask having a pattern area in which at least one is formed A first transfer step of performing exposure by mounting on an exposure apparatus and transferring the pattern area onto the object; and rotating at least one of the measurement mask and the object to rotate an angle of the object with respect to the measurement mask. A second transfer step of transferring the pattern area onto the object in a state where the angle is changed by a predetermined angle ⁇ (0 ° ⁇ ⁇ 180 °) from the first transfer step; and the object is set in a reference direction.
- a second transfer characteristic measurement method comprising: a size for measuring the direction orthogonal to the direction corresponding to the image and the second transferred image each of the reference direction, the measuring step at least measured.
- a measurement mask having a pattern area in which at least one predetermined measurement mark is formed is mounted on an exposure apparatus, exposure is performed, the pattern area is transferred onto an object, and the measurement mark is measured. Forming a first transfer image on the object. Further, by rotating at least one of the measurement mask and the object, the angle of the object with respect to the measurement mask and the state force at the time of forming the first transfer image also change by a predetermined angle ⁇ (0 ° ⁇ ⁇ 180 °). In this state, the pattern area is transferred onto the object, and a second transfer image of the measurement mark is formed on the object.
- an image of a first transfer image of the measurement mark formed on the object and a second transfer image of the measurement mark formed on the object is captured by the measuring device.
- image processing including edge detection processing is performed on the captured first transfer image image and second transfer image image, respectively, and the first transfer image and the second transfer image of the measurement mark are obtained.
- At least the size of each image in the measurement direction orthogonal to the direction corresponding to the reference direction is measured. That is, the first and second transferred images are respectively formed on the object so that the image capture by the measuring device is performed under substantially the same conditions.
- a transfer characteristic measuring method for measuring transfer characteristics in first and second directions crossing each other in an exposure apparatus for transferring a pattern formed on a mask onto an object.
- Measuring the size in the measurement direction by detecting the first and second elements of the marked mark such that the measurement directions are substantially the same direction in the measurement device. Is the way.
- detection means comprehensive detection processing including image capture and image processing.
- a mark including the first and second elements whose measurement directions substantially coincide with the first and second directions is formed on the object using the exposure apparatus.
- the first and second elements of the mark formed on the object are detected such that the measurement directions are substantially the same in the measurement device, and the size in the measurement direction is measured.
- the size of the first and second elements is measured in the same direction by the measuring device, so that the accuracy of the mark size measurement due to the rotation of the image to be measured is prevented from deteriorating.
- a transfer characteristic measuring method for measuring transfer characteristics in first and second directions intersecting with each other in an exposure apparatus for transferring a pattern formed on a mask onto an object. Then, using the exposure apparatus, a mark including first and second elements whose measurement directions substantially coincide with the first and second directions, respectively, is rotated at a rotation angle in the first and second directions. Forming on the object as first and second marks that differ by substantially the same angle as the intersection angle; one of the first and second elements of the first mark formed on the object; and A shape is formed on the object whose measurement direction coincides with the measurement direction of one element. Detecting the other of the first and second elements of the formed second mark and measuring the sizes of the first and second elements of the mark in the measurement direction, respectively. This is a characteristic measurement method.
- detection means comprehensive detection processing including image capture and image processing.
- the mark including the first and second elements whose measurement directions substantially match the first and second directions respectively has the rotation angles of the first and second elements.
- the first and second marks are formed on the object as first and second marks that differ by substantially the same angle as the intersection angle in the two directions.
- one of the first and second elements of the first mark formed on the object is formed on the object whose measurement direction substantially matches one of the elements of the first mark.
- the size of the first and second elements of the mark in the measurement direction is measured by detecting the other of the first and second elements of the second mark. That is, one of the first and second elements of the first mark and the other of the first and second elements of the second mark are set so that, for example, the measurement device detects the object under substantially the same conditions.
- each of the first and second elements is formed above, the detection processing is performed without applying any rotation, and the sizes of the first and second elements of the mark in the measurement direction are measured. As a result, it is possible to prevent a decrease in mark size measurement accuracy, and as a result, it is possible to accurately measure (evaluate) transfer characteristics of the exposure apparatus in two different directions.
- an exposure apparatus for transferring a pattern formed on a mask onto an object by using one of the first to fourth transfer characteristic measuring methods of the present invention. And an adjusting step of adjusting the exposure apparatus based on the measurement result.
- the transfer characteristic of the pattern by the exposure apparatus is accurately measured (evaluated) by using any of the first to fourth transfer characteristic measurement methods of the present invention, and the exposure is performed based on the measurement result.
- the device is adjusted. Therefore, it is possible to accurately adjust the transfer characteristics of the pattern by the exposure device.
- the present invention is a device manufacturing method for manufacturing a device using the exposure apparatus adjusted by the adjusting method of the present invention, from another viewpoint.
- FIG. 1 is a schematic view showing an exposure apparatus according to one embodiment.
- FIG. 2 is a plan view of a measurement reticle as viewed from a pattern surface side force.
- FIG. 3 is a flowchart simply illustrating a processing algorithm of a CPU in a main control device of the exposure apparatus when performing a part of a method of measuring a transfer characteristic of a pattern by the exposure apparatus.
- FIG. 4 is a diagram showing an example of a subroutine process of step 102 in FIG. 3.
- FIG. 1 A first figure.
- FIG. 5 is a view showing a resist image M M of T 1 113.
- FIG. 1 shows a schematic configuration of an exposure apparatus 100 according to an embodiment to which the adjustment method of the exposure apparatus of the present invention is applied.
- the exposure apparatus 100 is a step-and-scan type projection exposure apparatus (a loose scanner).
- the exposure apparatus 100 is illuminated by an illumination system 10 including a light source and an illumination optical system, and exposure illumination light (hereinafter, abbreviated as “illumination light”) IL as an energy beam from the illumination system 10.
- illumination light exposure illumination light
- Reticle stage RST holding reticle R as mask, ejected from reticle R
- a projection optical system PL for projecting the illumination light IL onto the wafer W (on the image plane) as an object
- a wafer stage WST for holding the wafer W, and a control system therefor.
- the illumination system 10 has a uniform illuminance including a light source, an optical integrator, and the like as disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-313250 and the corresponding US Patent Application Publication No. 2003Z0025890.
- Optical system, beam splitter, relay lens, variable ND filter, reticle blind, etc. (all not shown).
- the slit-shaped illumination area IAR on the reticle R defined by the reticle blind is illuminated by the illumination light IL with almost uniform illuminance.
- the illumination light IL an ArF excimer laser light (wavelength 193 nm) is used as an example.
- the optical integrator a fly-eye lens, a rod integrator (internal reflection type integrator), a diffractive optical element, or the like can be used.
- the illumination system 10 may adopt a configuration disclosed in, for example, JP-A-6-349701 and the corresponding US Pat. No. 5,534,970. To the extent permitted by the national laws of the designated country (or selected elected country) designated in this international application, the disclosures in this specification have been incorporated by reference to the disclosures in the above publications and corresponding U.S. patent application publications or U.S. patents. Partial.
- a reticle R is loaded on the reticle stage RST, and is held by suction via an electrostatic chuck (or vacuum chuck) not shown.
- the reticle stage RST is configured to be capable of minute drive (including rotation) in a horizontal plane (XY plane) by a drive system (not shown).
- the reticle stage RST can be finely driven in an XY plane perpendicular to the optical axis of the illumination system (coincident with the optical axis AX of the projection optical system PL described later) by a reticle stage drive unit (not shown) including a linear motor, for example. (Including rotation about the Z axis), and can be driven at a specified scanning speed in a predetermined scanning direction (here, the Y axis direction).
- the reticle is constantly detected by a reticle laser interferometer (hereinafter referred to as “reticle interferometer”) 54R with a resolution of, for example, about 0.5 to 1 nm.
- the position information of the reticle stage RST from the reticle interferometer 54R is based on the illumination optical system (lighting excluding the light source). It is supplied to a main controller 50 installed outside a main body chamber (not shown) that houses therein the constituent parts of the system 10) and a projection optical system.
- Main controller 50 drives and controls reticle stage RST via a reticle stage drive unit (not shown) based on the position information of reticle stage RST.
- the projection optical system PL for example, a both-side telecentric reduction system is used.
- the projection magnification of the projection optical system PL is, for example, 1Z4, 1Z5, or 1Z6. For this reason, when the illumination area IAR on the reticle R is illuminated by the illumination light IL as described above, a reduced image of the circuit pattern of the reticle R in the illumination area IAR is projected via the projection optical system PL.
- the projection optical system PL a refraction system in which only a plurality of, for example, about 10 to 20 refraction optical elements (lens elements) 13 have a force is used.
- a plurality of lens elements 13 constituting the projection optical system PL a plurality of lens elements 13 on the object plane side (the reticle R side) (here, for simplicity, four elements) are used.
- 13, 13 are the imaging characteristic correction controllers
- the movable lens can be driven from the outside by the mirror 48.
- Reference numerals 14 are held in the lens barrel via lens holders having a double structure (not shown). These lens elements 13-13 are held respectively in the inner lens holders, and these inner lenses are
- the lens holder is supported by an unillustrated driving element (actuator), for example, a piezo element, at three points in the direction of gravity with respect to the outer lens holder.
- actuator for example, a piezo element
- Each drive is shifted in the Z-axis direction, which is the direction of the optical axis of the projection optical system PL, and tilted with respect to the XY plane (that is, the rotation direction around the X-axis ( ⁇ X direction) and the rotation direction around the Y-axis (( (Y direction) can be driven (tilted).
- the other lens elements 13 are held in the lens barrel via a normal lens holder. Not only the lens element 13-13 but also near the pupil plane of the projection optical system PL or on the image plane side
- the lens element to be used, or the aberration correction plate (optical plate) for correcting the aberration of the projection optical system PL, particularly the non-rotationally symmetric component thereof, may be configured to be drivable.
- the degrees of freedom (movable directions) of these drivable optical elements are not limited to three, but are limited to one. One, two or more than four.
- the wafer W is held on the wafer stage WST via a wafer holder 25 by vacuum suction (or electrostatic suction) or the like.
- a driving device for example, a rotary motor
- a holder that can rotate around the Z axis within an angle range of approximately 180 ° while holding the wafer is used.
- the wafer stage WST is disposed below the projection optical system PL, and can be moved in the XY plane direction and the Z-axis direction by a wafer stage drive unit 56 that also has a linear motor, a voice call motor (VCM), and the like. Micro drive is also possible in the direction of inclination with respect to the XY plane (rotation direction around the X axis ( ⁇ X direction) and rotation direction around the Y axis ( ⁇ y direction)).
- the position of the wafer stage WST in the XY plane is determined by a wafer laser interferometer via a reflection surface provided (or formed) on the wafer stage WST. (Hereinafter abbreviated as “wafer interferometer”.) With 54W, it is always detected with a resolution of, for example, about 0.5-lnm.
- the wafer interferometer 54W includes a plurality of multi-axis interferometers having a plurality of measuring axes, and these interferometers rotate the wafer stage WST ( ⁇ z rotation (joing), rotation around the Y axis ⁇ y rotation ( Rolling) and X rotation (pitching) around the X axis can be measured.
- Position information (or speed information) of wafer stage WST detected by wafer interferometer 54W is supplied to main controller 50.
- Main controller 50 controls the position of wafer stage WST via wafer stage driving unit 56 based on the above-mentioned position information (or speed information) of wafer stage WST.
- the exposure apparatus 100 has a light source whose on / off is controlled by the main controller 50, and forms images of a large number of pinholes or slits toward the imaging plane of the projection optical system PL.
- a projection type multi-point focal position detection system (hereinafter, simply referred to as a “focus position detection system”) is provided.
- the detailed configuration of the multi-point focal position detection system similar to the focal position detection system (60a, 60b) of the present embodiment is described in, for example, Japanese Patent Application Laid-Open No. 6-283403 and U.S. Pat. No. 332, etc.
- the multi-point focal position detection system described in the above publications irradiates the imaging light beam not only inside the exposure area IA on the wafer W but also outside the exposure area IA, so that the unevenness of the wafer W (step information) Has a function of pre-reading an image, but it is not necessary to have such a function (that is, it is only necessary to irradiate only the inside of the exposure area IA with the imaging light beam).
- the shape of the light beam irradiated by the irradiation system 60a may be a parallelogram or other shapes.
- the main controller 50 controls the defocus to be zero or within the depth of focus based on a defocus signal (defocus signal), for example, an S-curve signal from the light receiving system 60b during scanning exposure or the like.
- a defocus signal for example, an S-curve signal from the light receiving system 60b during scanning exposure or the like.
- exposure apparatus 100 has an off-axis (off-axis) used for position measurement of an alignment mark on wafer W held on wafer stage WST and a reference mark formed on reference mark plate FM. It is equipped with an ALG-based alignment system! For example, this alignment-based ALG irradiates a target mark with a broadband detection light beam that does not expose the resist on the wafer, and the target mark image formed on the light-receiving surface by the reflected light of the target mark power. The image of the target is captured using an image sensor (CCD, etc.), and an image processing FIA (Field
- Image Alignment type sensors are used. It should be noted that coherent detection is not limited to FIA systems.
- An alignment sensor that irradiates the target mark with the emitted light and detects scattered or diffracted light generated from the target mark, or detects two diffracted lights (for example, the same order) generated from the target mark by interfering with each other. It is of course possible to use singly or in an appropriate combination.
- a reference mark plate corresponding to a pair of reticle marks on reticle R via projection optical system PL is placed above a force reticle scale (not shown).
- a pair of reticle alignment systems including a TTR (Through The Reticle) alignment system using light having an exposure wavelength for simultaneously observing the pair of first fiducial marks are provided.
- TTR Through The Reticle
- these reticle alignment systems those having the same configuration as those disclosed in, for example, Japanese Patent Application Laid-Open No. 7-176468 and US Patent No. 5,646,413 corresponding thereto are used.
- the disclosures in the above publications and corresponding US patents are hereby incorporated by reference.
- the control system is mainly configured by the main controller 50 in FIG.
- the main control unit 50 is composed of a workstation (or a microcomputer) and the like which also has a CPU (central processing unit), a ROM (read only memory), a RAM (random access memory) and the like. In addition to performing the above-described various control operations, the overall control of the apparatus is controlled.
- a coater / developer (not shown) (hereinafter, referred to as “CZD”) is connected inline to the exposure apparatus 100 of the present embodiment.
- the CZD includes a coater (resist coating) section for applying a resist to a wafer, a developer section (developing) section for developing the exposed wafer, a coating control device, and a development control device.
- the control device controls the resist coating operation and the developing operation on the wafer.
- the main controller 50 of the exposure apparatus 100 is connected via a communication path to an SEM system 80 including a length measuring SEM, which is a kind of charged particle beam scanning type measuring apparatus.
- the SEM system 80 Briefly, for example 10 in 5 Pa or more to keep electron beam barrel converges the primary beam by an electromagnetic field lens irradiated onto measured pattern, irradiated surface force is also released This system collects secondary electrons and reflected electrons, detects the length measurement pattern 'edge from the line' profile, and measures the pattern dimension.
- the SEM system 80 includes, for example, a) an SEM unit, and b) a TFE (Thermal Field).
- High voltage power supply power supply for focusing lens and objective lens, deflection power supply for scanning, Z sensor control system, SEM control system integrating secondary electron detector, c) Wafer transfer, high speed stage with laser interferometer Stage control system that controls driving, d) Signal converter that synchronizes secondary electron signal and deflection signal and transfers it to image signal, e) Image processing system (including display device), f) Overall system It is configured to include a main computer to be controlled.
- the main computer of the SEM system 80 is connected to the main controller 50 of the exposure apparatus 100 via a communication path.
- a measurement reticle R as a measurement mask on which a measurement mark on which an image (such as a resist image) is to be measured for a line width by the adjustment method of the present embodiment is formed.
- FIG. Fig. 2 is a plan view of the measurement reticle R viewed from the pattern surface side.
- the measurement reticle R is formed of a rectangular glass substrate.
- a rectangular pattern area PA surrounded by a light-shielding band SB is formed at the center of the pattern surface.
- measurement marks are arranged in three lines in the Y-axis direction, seven measurement marks MP—MP are arranged at equal intervals in the center line, and are arranged in other lines.
- Three measurement marks MP MP and MP MP are arranged at equal intervals.
- a first line pattern element (or a first mark element, hereinafter also referred to as a “vertical line pattern element”) having a design line width of 400 nm extending in the Y-axis direction, and an angle with respect to the Y-axis direction
- the second line pattern element (or the second line pattern element) having a design line width of 400 nm extending in the X-axis direction which is the clockwise rotation direction in FIG. Mark element, hereinafter also referred to as “horizontal line pattern element”).
- Projection optical system PL
- Reticle alignment marks RM are formed on both outer sides of pattern area PA.
- Reticle alignment marks RM, RM are formed on one side and the other side at the same distance.
- Reticle alignment marks RM, RM are formed on one side and the other side at the same distance.
- the alignment marks RM and RM, and RM and RM, refer to the Y axis passing through the reticle center.
- This measurement reticle R is loaded on the reticle stage RST.
- the pattern surface (the surface on the front side of the paper surface in FIG. 2) is the surface facing the projection optical system PL.
- the operation controlled by the main control device 50 of the exposure apparatus 100 that is, the exposure apparatus 100 and the exposure apparatus 100 are connected in-line.
- the processing algorithm of the CPU in the main control unit 50 is simplified according to the flowcharts of FIGS. It will be described with reference to FIG.
- step 102 of FIG. 3 processing of a subroutine for pattern transfer of the measurement reticle R is performed.
- a measurement reticle R is loaded on a reticle stage RST via a reticle loader (not shown).
- step 204 predetermined preparation work such as reticle alignment is performed.
- a reference is established in which the center of a specific pair of first reference marks formed on the surface of the reference mark plate FM provided on the wafer stage WST substantially coincides with the optical axis AX of the projection optical system PL.
- the wafer stage WST is moved to the position and the center (reticle center) of the pair of reticle alignment marks RM and RM on the measurement reticle R is projected.
- the reticle stage RST is moved to a reference position almost coincident with the optical axis of the shadow optical system PL.
- movement of wafer stage WST is performed by main controller 50 controlling wafer stage driving unit 56 while monitoring the measured value of wafer interferometer 54W, and movement of reticle stage RST is mainly performed.
- Control device 50 monitors the measurement value of reticle interferometer 54R. This is performed by controlling a reticle stage driving unit (not shown). The same applies to the following!
- the wafer stage RST and the wafer stage WST are stepped in the Y-axis direction in opposite directions to each other, and another pair of first fiducial marks on the fiducial mark plate FM using the illumination light IL by the aforementioned pair of reticle alignment systems. And the corresponding reticle on the measurement reticle R
- the relative positions of at least two pairs of first fiducial marks on fiducial mark plate FM and the corresponding reticle alignment marks on measurement reticle R are determined by the reticle.
- the stage RST and the wafer stage WST are moved in steps in the Y-axis direction while measuring using the reticle alignment system, so that the wafer stage coordinate system defined by the measurement axis of the wafer interferometer and the reticle interferometer length measurement Detection of the positional relationship with the reticle stage coordinate system defined by the axis, that is, reticle alignment is performed. In this reticle alignment, it is sufficient to move reticle stage RST without moving wafer stage WST.
- the illumination system 10 is so arranged that the width of the irradiation area (illumination area IAR) of the illumination light IL in the non-scanning direction substantially matches the width of the pattern area PA of the measurement reticle R in the non-scanning direction.
- the measurement wafer w with the resist coated on the surface As shown, the measurement wafer w with the resist coated on the surface
- the notch N formed on the wafer stage WST is placed via the wafer holder 25 on the wafer stage WST in a state in which the notch N faces in the ⁇ Y direction (hereinafter, also referred to as “0 ° state”).
- the count value n of a counter (not shown) is initialized to “1”.
- wafer stage WST is moved to the acceleration start position for the n-th (here, the first) exposure, and the position of measurement reticle R is changed to the acceleration start position.
- step 212 relative scanning of the reticle stage RST and the wafer stage WST in the Y-axis direction is started. Then, when both stages reach the target scanning speed and reach the constant-speed synchronization state, the illumination light IL from the illumination system 10 causes the measurement reticle R to move.
- the pattern area PA starts to be illuminated, and scanning exposure starts. Then, different areas of the pattern area PA of the measurement reticle R are sequentially illuminated with the illumination light IL, and the entire pattern area is illuminated.
- the scanning exposure is completed by completing the illumination for.
- the pattern area PA formed on the measurement reticle R is projected onto the measurement wafer W via the projection optical system PL.
- the image is reduced and transferred to the exposure target area.
- n K, that is, a transfer image of a predetermined number of pattern areas is formed on the wafer W.
- ⁇ 1, that is, only one transfer image of the pattern area ⁇ (that is, 13 measurement marks MP in this example) was formed on the wafer W by the first (first) exposure. No decision at step 214
- step 216 The process proceeds to step 216.
- step 216 the count value n of the above-described counter is incremented by 1 (n n + 1), and the process returns to step 210.
- step S2128 when a transfer image of the pattern area PA (13 measurement marks MP) of K is set to 24, the process proceeds to step 218.
- FIG. 5 (B) shows the state of measurement wafer W immediately before the process of step 218 is started. Also, in Fig. 5 (A) and Fig. 5 (B)
- the transfer image forming area is represented as a shot area SA. 24 different shot areas (for example, 26 x 33mm
- the transfer image of the pattern area PA is formed in each of the field sizes (field size).
- step 218 the wafer holder 25 is held at 90 ° around the Z-axis (for example, 90 ° clockwise) with the wafer holder 25 holding the measurement wafer W via a drive unit (not shown) (not shown).
- step 220 the count value n is incremented by 1 (n n + 1), and the routine goes to the next step 222.
- step 222 the n-th exposure (here, the 25th shot area SA (the 25th transfer image of the pattern area PA) shown in Fig. 6A) is formed. Exposure)
- the wafer stage WST is moved to the acceleration start position, and the measurement reticle R
- step 224 scanning exposure is performed in the same manner as in step 212 described above, and a transfer image of the pattern area PA of the measurement reticle R is formed on the wafer W.
- Fig. 6 (A) a transfer image of the pattern area PA of the measurement reticle R is formed on the wafer W.
- a transfer image of the pattern area PA is formed in the shot area SA shown in (). This shot
- the area SA is rotated 90 ° with respect to the previously formed shot area SA—SA.
- n 25
- the determination in step 226 is denied and the process returns to step 220.
- FIG. 6 (B) shows the measurement wafer W when all the subroutines of the pattern transfer of the measurement reticle R in step 102 have been completed. Is shown. In this state, 24 shot areas each having a different longitudinal force of 90 ° are formed in the left and right areas sandwiching the center of the wafer.
- the measurement wafer W that has been subjected to the exposure processing in the subroutine of the above-described step 102 is transferred to the CZD connected inline with the exposure apparatus 100.
- the measurement wafer w is transferred to the wafer stage via a wafer unloader (not shown).
- the wafer is transferred into the CZD via the wafer transfer system.
- step 106 after instructing the development control device that controls the developer unit constituting the CZD to develop the measurement wafer W, the process proceeds to step 108, where the measurement process is performed.
- a pattern area PA is formed in each of the shot areas SA 1 to SA 48 as shown in T 6 (B).
- the shot area SA is formed in each of the shot areas SA 1 to SA 48 as shown in T 6 (B).
- the shot area SA is formed in each of the shot areas SA 1 to SA 48 as shown in T 6 (B).
- the measurement wafer W on which such a resist image (mark) M is formed becomes a sample for measuring the transfer characteristics of the pattern of the exposure apparatus j ⁇ 100.
- step 110 the developed measurement wafer is transferred via a wafer transfer system (not shown). W is transported to a predetermined location near the SEM system 80, and a series of processes in this routine are performed.
- the predetermined location is a location suitable for the operator to easily remove the developed wafer and to transport the removed wafer into the wafer transport system on the atmosphere side of the SEM system 80. And indicates a predetermined place.
- the size (dimension) of the pattern in the resist image is measured by the SEM system 80 using the measurement wafer W as a sample in accordance with the operator's instructions in the same procedure as usual.
- the measurement wafer W force SEM system 80 is configured according to the operator's instruction.
- the sample is transferred into the sample chamber through the transfer system on the atmosphere side, the load lock chamber, and the transfer system on the vacuum side.
- the measurement wafer w is oriented in the o ° direction (this is the reference direction).
- the reference direction refers to the shot area SA on the measurement wafer W.
- XY coordinate system the coordinate axes of the rectangular coordinate system
- the measurement direction corresponds to the Y-axis direction in FIG. 6 (B).
- the size of the mark (resist image) in the measurement direction refers to the mark M—M inside the shot area SA—SA and the measurement mark MP—M described above.
- Second line pattern element This is the line width of the image of P.
- the image processing system of the SEM system 80 uses the captured measurement wafer W
- the first line pattern element (vertical line ) Line width of P image (first element, first part, first line element) and shot area SA — SA
- V 25 48 Mark M M inside the second line pattern element (horizontal line pattern required)
- the measurement results are stored in the internal memory of the main computer of the SEM system 80 and displayed on the screen of the display device.
- line width values 312 line width measurement values (hereinafter referred to as “line width values”) of the image of the image and the 312 line width values of the image of the second line pattern element (horizontal line pattern element) P Or screen chart
- VjHjV-Hj-1) The calculation of VjHjV-Hj-1) is also instructed to the main computer of the SEM system 80.
- ⁇ (LW) is the image of the first line pattern element P of the mark M and the second line pattern.
- VZH difference Difference from the image of the element P, that is, the line width variation (size variation)
- AAVE (LW) and AAVE (LW) are the first line pattern element and the second line pattern element
- the operator looks at the display screen, The main computer of the SEM system 80 is instructed to transmit the information of the measurement result to the main controller 50 of the exposure apparatus 100.
- the information of the above measurement result is sent from the main computer of the SEM system 80 to the exposure apparatus 100, and the main controller 50 of the exposure apparatus 100 receives the information of the above measurement result and stores it in the memory. .
- a step 'and' scan method is performed on the reticle R.
- the formed device pattern is transferred to a plurality of shot areas on the wafer W via the projection optical system PL. Note that such a series of operations is the same as that of a normal scanner, and thus a detailed description thereof will be omitted.
- calculations are performed in accordance with a predetermined calculation program, and based on the calculation results, at least one of the lenses 13-13 constituting the projection optical system PL via the imaging characteristic adjusting device 48. To adjust the imaging characteristics of the projection optical system PL.
- the speed ratio of the wafer stage WST and the reticle stage RST is finely adjusted as needed.
- the transfer characteristics of the pattern by the exposure apparatus 100 are adjusted to a level that satisfies the required specifications. That is, the difference in the exposure field (one scanning exposure range on the wafer W, corresponding to the above-described shot area SA).
- the exposure equipment is adjusted so that the in-plane uniformity of each line width satisfies the specifications.
- exposure is performed by mounting the measurement reticle R on the exposure apparatus 100 (see FIG. 4).
- step 212 the pattern area PA formed on the reticle R
- the image of the first transfer image (shot area SA mark MM in FIG. 6B) is the SEM Captured by system 80. Also, the angle of wafer W with respect to measurement reticle R
- Exposure is performed at a predetermined angle of 90 ° from the time when the first transfer image is formed (see step 224).
- the image of the area SA SA mark M M is captured by the SEM system 80. So
- the SEM system 80 performs image processing including edge detection processing on the captured image of the first transfer image and the captured image of the second transfer image, respectively.
- the first and second transferred images of the measurement mark are placed on the wafer W such that the image capture by the SEM system 80 is performed under substantially the same conditions.
- the image of the first and second transferred images respectively captured by the SEM system 80 is subjected to image processing with edge detection processing without applying any rotation, and measurement is performed.
- the size of each of the first transfer image and the second transfer image of the use mark in the measurement direction is measured.
- the measurement mark MP of the measurement reticle R is transferred onto the wafer by a predetermined number of shots without rotating the wafer, and the wafer is transferred.
- the measurement may be performed twice. In this case, the measurement is performed in the following procedure as an example.
- the first image of the mark MM is captured by the SEM system 80.
- the first measurement mark MP on the measurement reticle R is formed.
- the force described for the case where the second line pattern element extends in the direction rotated by an angle a 90 ° with respect to the direction in which the line pattern element extends
- the above angle a is an angle in the range of 0 ° ⁇ a ⁇ 180 ° Any angle may be used. That is, when the measurement mark is configured to include the first line pattern element and the second line pattern element, the first line pattern element and the second line pattern element only need to extend in different directions. However, when the angle a is set to an angle other than 90 °, the processing of the step of rotating the wafer holder by the angle a is performed instead of the step 218 described above, and the rotation of the wafer W for measurement is performed.
- the direction of the line connecting the center and the notch must match the direction in which the second line pattern element on the measurement reticle extends. At this time, the center of the wafer W before rotation is
- the measurement direction substantially coincides with one of two different directions (first and second directions, usually X and Y directions) for which the transfer characteristics should be measured.
- Shot area SA In SA, at least the other of the first and second elements have different measurement directions 2
- the pattern element P and the horizontal line pattern element P) are in the measurement direction (or extension direction, periodic direction).
- Direction is preferably formed so that the intersection angle of the two directions is substantially equal to the intersection angle of the two different directions.
- the first and second exposures are performed by making the measurement directions of the first and second mark elements of the measurement mark MP substantially coincide with the two different directions, respectively. Except for the position (rotation angle) in the direction of rotation of the measurement mark MP
- the transfer conditions of the exposure apparatus including T j can be set the same, and the measurement mark M
- the line width (size) of the mark M on the wafer W, which is the transferred image of P, in two different directions is j ⁇ j
- the first and second mark elements of the measurement mark MP ⁇ j on the reticle R do not necessarily have to coincide with the intersection angles of the two different directions in the measurement direction.
- the measurement direction of only one of the first and second mark elements is made substantially coincident with one of two different directions, and in the second exposure, only the other of the first and second mark elements is used. Then, the measurement direction may be made to substantially coincide with the other of the two different directions.
- one of the first and second elements of the mark (first mark) M formed by the above-described first exposure and the mark (second mark) formed by the above-described second exposure The measurement directions of the first and second elements of M almost coincide with each other, that is, the first mark M and the second mark M on the wafer W have two different directions in which the transfer characteristics must be measured.
- Wafer W is set at the intersection angle in two different directions so that it rotates by the same angle as the difference angle.
- the rotation angle (rotation error) between the measurement direction of one of the first and second elements of the mark M and the other measurement direction of the first and second elements of the second mark M is related to the rotation direction in the SEM system 80. If the allowable value is exceeded, it is preferable to rotate the wafer W with the SEM system 80.
- the measurement mark MP on the measurement reticle R is the first line mark.
- the mark M which is the transfer image on j ⁇ , is the first element (first part, first line element) that is the image of the first line pattern element and the second element (second part) that is the image of the second line pattern element
- the size measurement target mark is not limited to a combination of line patterns, but may be a frame mark or a polygonal mark (for example, both square shapes).
- the first element and the second element of the mark M may be connected, intersected, or partially overlap.
- the mark is not limited to an isolated pattern, but may be a dense pattern (for example, a periodic pattern such as a line and space pattern).
- any shape may be used as long as the size can be measured in two intersecting directions.
- the line width (size) of the mark M in the above two different directions can be measured even if the mark M force is only one of the two rectangular marks.
- the first and second elements of the mark M are the same element (such as a rectangular mark).
- the line width (size) of the mark M in the X and Y directions is measured, but the line width may be measured in two directions at least one of which is different from the X and Y directions. However, not only two but also three or more, for example, two directions obtained by rotating the X and Y directions by 45 °, that is, a total of four directions may be used.
- the number of elements of the TjT measurement mark MP is not two but four (however, two for a rectangular mark, etc.).
- the present invention is not limited to this.
- the present invention may be not only a charged particle beam scanning type measuring device that scans a measurement object with a charged particle beam other than an electron beam to perform measurement, but may be another measuring device such as an optical microscope.
- the measuring device is not limited to the image processing method, but may be another method.
- the present invention is particularly effective when, for example, a line width or the like can be measured independently in the X and Y directions, and particularly when a measuring device having a different measuring method and configuration in the X and Y directions is used.
- the wafer holder is rotated (step 218) after the first transfer step (step 212) for forming the first transfer image j ⁇ of the measurement mark MP on the wafer W. Then, a second transferred image of the measurement mark MP is formed at a different position on the wafer W by j ⁇
- the second transfer step (step 224) to be performed is performed, and thereafter, the transferred image on the measurement wafer is measured by SEM.
- the present invention is not limited to this. That is, instead of rotating the wafer holder, a rotatable reticle holder may be provided on the reticle stage RST, and this may be rotated. Alternatively, both the wafer holder and the reticle holder may be rotated. .
- a support member that can move up and down while holding a wafer or the like (for example, a center-up pin that transfers a wafer or the like between a transfer system (loader) and a holder, or the like) ) May be rotatable, or instead of rotating the support member, or in combination therewith, the wafer may be rotated by reloading using a loader or a dedicated mechanism.
- the line width measurement accuracy is reduced due to unevenness (unevenness of the resist film thickness) and the like. Therefore, for example, by arranging the shot areas formed by the first exposure and the shot areas formed by the second exposure alternately on the wafer, it is possible to reduce a decrease in measurement accuracy due to uneven coating or the like. Is preferred,.
- the cut-out area was arranged so that it did not overlap each other on the Ueno and W.
- first and second exposures are each configured to form a transfer image of the measurement mark MP of the reticle R in a plurality of shot areas.
- the number may be one instead of the number, and the number of the first exposure and the number of the second exposure do not have to be the same. Note that 1st mark element and 2nd mark of reticle R measurement mark MP
- the mark elements have the same configuration except for the arrangement direction (measurement direction) and have the same transfer conditions. However, at least one of the configuration and the transfer conditions may be different. Also, instead of using a reticle R dedicated to measurement, the reticle used in device
- the measurement mark MP may be formed and used. Further, the above-mentioned force for forming a transfer image of the plurality of measurement marks MP for each shot area SA
- the arrangement (position in the shot area) is not limited to this, and may be arbitrary. The number may be one instead of plural. Further, for example, a reference mark provided on the reticle stage RST may be used as the measurement mark MP, instead of using only a reticle dedicated to measurement or device manufacturing.
- the VZH difference and the in-plane uniformity are obtained as the transfer characteristics of the exposure apparatus.
- the transfer characteristics are not limited to these, for example, the image formation characteristics of the projection optical system PL ( Various kinds of aberration such as coma and astigmatism) and synchronization accuracy (synchronization error) in scanning exposure may be used.
- a line mark is used as a mark element for the reticle R measurement mark MP.
- the difference between the maximum value and the minimum value of the line width is determined as the line width variation. You may ask. Also, a reticle is used for marks already formed on the wafer.
- R measurement mark MP is superimposed and transferred, for example, relative position ⁇ j of the two marks
- the overlay accuracy may be obtained as a transfer characteristic by measuring (interval, etc.).
- a transfer image of the measurement mark MP is formed on the wafer by scanning exposure, and the size of the transfer image is measured, so that the scanning exposure apparatus (exposure To determine the characteristics (e.g., dynamic imaging characteristics) of the
- Exposure is performed with the reticle stage RST holding this and the wafer (and the wafer stage WST holding it) almost stationary, a transfer image of the measurement mark MP is formed on the wafer, and the transfer is performed.
- various characteristics such as static imaging characteristics
- the above-mentioned imaging characteristic adjusting device 48 is not limited to the one that moves an optical element, but moves an optical element that is not Instead or in combination with it, for example, by changing the center wavelength of the illumination light or the temperature of the optical element, or by changing the gas pressure in the hermetic space between the multiple optical elements, the refractive index of the projection optical system is changed. May be changed. Further, in order to adjust the imaging characteristics of the projection optical system, for example, the whole or a part of the projection optical system (optical element unit, barrel unit, etc.) is replaced, or at least one of the projection optical system is replaced.
- One optical element may be taken out and reworked.
- it is only necessary to change the position of the optical element (including the distance from other optical elements) and the inclination, etc., especially when the optical element is a lens element, change the eccentricity.
- it may be rotated about the optical axis.
- the imaging characteristic of the projection optical system as the above-described transfer characteristic, as disclosed in, for example, International Publication WO03Z065428 pamphlet
- the imaging characteristic and the known projection optical system PL alone are used.
- the wavefront aberration of the projection optical system is estimated on the basis of the wavefront difference (the surface aberration is a simple substance).
- Optical element that optimizes the imaging characteristics by solving a predetermined merit function using the Fringe-Zelke polynomial that expands the wavefront aberration of May be determined to adjust the imaging characteristics.
- the imaging characteristics under the reference exposure conditions and the measured imaging characteristics are compared.
- the difference is the Zernike sensitivity table, the wavefront aberration change table, and the correction amount of the adjustment amount.
- the amount of correction of the wavefront aberration is obtained using the relational expression that coincides with the product of the deviation and the wavefront aberration is calculated based on the amount of correction and the single wavefront aberration.
- the transfer characteristic measurement (and adjustment of the exposure apparatus) in the above embodiment may be performed at the time of maintenance of the exposure apparatus, or may be performed when the exposure apparatus is loaded into a clean room and started up.
- the timing may be arbitrary.
- the processing after the transfer of the pattern to the wafer includes the force exposure apparatus 100 and the SEM system 80 described in the case where the operation includes the manual operation by the operator.
- a host computer connected via the built-in in-line interface unit and controlling the exposure apparatus 100, the SEM system 80, and the in-line interface unit in an integrated manner may be provided.
- the above-described measurement reticle R is executed by a program executed by the host computer.
- the main controller 50 of the exposure apparatus 100 controls the CZD.
- the exposure apparatuses 100, CZD, and CZD may be controlled by a host computer that manages a device manufacturing process.
- the SEM system may be integrally controlled, or the exposure apparatus 100 and the SEM system may not be connected via a communication path (wired or wireless). That is, the configuration (including the communication path) of each of the exposure apparatus 100, the CZD, and the SEM system is not limited to the above embodiment.
- the exposure apparatus for measuring the transfer characteristics of the pattern is a scanner
- the transfer characteristics measurement method of the present invention is not limited to the scanner, but may be a stationary device such as a stepper.
- the present invention can be similarly applied to a mold exposure apparatus.
- the object to be exposed by the exposure apparatus is not limited to a wafer for semiconductor manufacturing as in the above embodiment.
- the manufacturing of a display device such as a liquid crystal display element, a plasma display, and an organic EL is not limited. It may be a rectangular glass plate for use, a substrate for manufacturing a thin-film magnetic head, an imaging element (such as a CCD), a mask or a reticle, or the like.
- the magnification of the projection optical system in the exposure apparatus of the above embodiment may be not only a reduction system but also an equal magnification or an enlargement system, and the projection optical system PL is not only a refraction system but also a reflection system and a catadioptric system.
- the deviation of the system may be acceptable, and the projected image may be the deviation of the inverted image and the erect image.
- the illumination light IL may be ArF excimer laser light (wavelength 193 nm), KrF excimer laser light (wavelength 248 nm), F laser light (wavelength 157 nm), or the like.
- the illumination light IL of the exposure apparatus is not limited to light having a wavelength of 100 nm or more, and needless to say, light having a wavelength of less than 100 nm may be used.
- EUV Extreme Ultraviolet
- the soft X-ray region for example, a wavelength region of 5 to 15 nm
- An EUV exposure apparatus using an all-reflection reduction optical system designed under a wavelength (for example, 13.5 nm) and a reflective mask is being developed.
- an exposure apparatus of the aperture proximity method can also measure the transfer characteristics of the pattern by the transfer characteristic measuring method of the present invention.
- the present invention is applied to a maskless exposure apparatus using a variable-shaped mask that changes the intensity distribution of illumination light on the object plane of the projection optical system PL, and the characteristics thereof are similarly changed. You can ask.
- An exposure apparatus using a charged particle beam such as an electron beam or an ion beam can also measure the transfer characteristics of a pattern by the transfer characteristics measurement method of the present invention.
- the electron beam exposure apparatus may be any of a pencil beam system, a variable shaped beam system, a cell projection system, a blanking 'aperture' array system, and a mask projection system.
- the semiconductor device includes a step of designing the function and performance of the device, a step of manufacturing a reticle based on the design step, and a step of manufacturing a wafer from a silicon material.
- the exposure apparatus of the above embodiment in which the transfer characteristics of the pattern are adjusted in the lithography step, is used, a highly integrated device can be manufactured with high yield.
- the measurement method of the present invention is suitable for measuring information on the size of a mark formed on an object.
- the transfer characteristic measuring method of the present invention is suitable for measuring the transfer characteristics of a pattern by an exposure apparatus.
- the method for adjusting an exposure apparatus according to the present invention is suitable for adjusting an exposure apparatus.
- the device manufacturing method of the present invention is suitable for manufacturing a device.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2005517912A JP4972936B2 (ja) | 2004-02-13 | 2005-01-12 | 計測方法 |
US10/589,336 US7848594B2 (en) | 2004-02-13 | 2005-01-12 | Measurement method, transfer characteristic measurement method, adjustment method of exposure apparatus, and device manufacturing method |
KR1020067008720A KR101070202B1 (ko) | 2004-02-13 | 2006-05-04 | 계측방법, 전사특성 계측방법, 노광장치의 조정방법 및디바이스 제조방법 |
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PCT/JP2005/000205 WO2005078775A1 (ja) | 2004-02-13 | 2005-01-12 | 計測方法、転写特性計測方法、露光装置の調整方法及びデバイス製造方法 |
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US (1) | US7848594B2 (ja) |
JP (2) | JP4972936B2 (ja) |
KR (1) | KR101070202B1 (ja) |
TW (1) | TWI275131B (ja) |
WO (1) | WO2005078775A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007194551A (ja) * | 2006-01-23 | 2007-08-02 | Nikon Corp | 算出方法、調整方法及び露光方法、並びに像形成状態調整システム及び露光装置 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5554846B2 (ja) * | 2010-02-19 | 2014-07-23 | エーエスエムエル ネザーランズ ビー.ブイ. | リソグラフィ装置、デバイス製造方法とそれに関連付けられたデータ処理装置及びコンピュータプログラム |
WO2012102313A1 (ja) * | 2011-01-26 | 2012-08-02 | 旭硝子株式会社 | フォトマスクの製造方法 |
KR101764169B1 (ko) * | 2011-08-19 | 2017-08-02 | 삼성전자 주식회사 | 마스크리스 노광 장치와 이를 이용한 빔 위치 계측 방법 |
CN105474620B (zh) * | 2013-07-29 | 2018-08-24 | 富士胶片株式会社 | 摄像模块的制造方法及摄像模块的制造装置 |
US9564291B1 (en) * | 2014-01-27 | 2017-02-07 | Mochii, Inc. | Hybrid charged-particle beam and light beam microscopy |
CN105988305B (zh) * | 2015-02-28 | 2018-03-02 | 上海微电子装备(集团)股份有限公司 | 硅片预对准方法 |
KR20200126234A (ko) | 2019-04-29 | 2020-11-06 | 삼성전자주식회사 | 마이크로 led 전사 방법 및 이에 의해 제조된 디스플레이 모듈 |
KR20210059130A (ko) | 2019-11-14 | 2021-05-25 | 삼성디스플레이 주식회사 | 표시 장치 |
CN113776916B (zh) * | 2021-09-10 | 2024-04-26 | 广州机械科学研究院有限公司 | 滤膜及滤膜应用方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04132909A (ja) * | 1990-09-25 | 1992-05-07 | Mitsubishi Electric Corp | 電子ビーム寸法測定装置 |
JPH0562882A (ja) * | 1991-09-02 | 1993-03-12 | Nikon Corp | 結像位置測定方法 |
JPH06181155A (ja) * | 1991-06-28 | 1994-06-28 | Digital Equip Corp <Dec> | 実際の半導体ウェーハ工程のトポグラフィーに合わせた位置合せ測定システムの直接的校正のための構造および方法 |
JP2003086497A (ja) * | 2001-09-13 | 2003-03-20 | Sony Corp | リソグラフィ方法 |
JP2004047737A (ja) * | 2002-07-11 | 2004-02-12 | Toshiba Corp | 検査方法及びフォトマスク |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4547895A (en) * | 1978-10-30 | 1985-10-15 | Fujitsu Limited | Pattern inspection system |
WO1989003094A1 (en) * | 1987-10-02 | 1989-04-06 | Kabushiki Kaisha Komatsu Seisakusho | Method of recognizing linear pattern |
US6094256A (en) * | 1998-09-29 | 2000-07-25 | Nikon Precision Inc. | Method for forming a critical dimension test structure and its use |
US7133549B2 (en) * | 1999-04-05 | 2006-11-07 | Applied Materials, Inc. | Local bias map using line width measurements |
JP2001108410A (ja) * | 1999-10-07 | 2001-04-20 | Nikon Corp | 画像測定装置 |
JP2001166454A (ja) * | 1999-12-07 | 2001-06-22 | Nikon Corp | マスク、露光方法、線幅測定方法、並びに半導体デバイスの製造方法 |
JP2001250760A (ja) * | 2000-03-06 | 2001-09-14 | Nikon Corp | 収差計測方法、該方法を使用するマーク検出方法、及び露光方法 |
JP2003303765A (ja) * | 2002-04-12 | 2003-10-24 | Canon Inc | 歪曲収差量及び像面湾曲の測定方法 |
-
2005
- 2005-01-12 JP JP2005517912A patent/JP4972936B2/ja not_active Expired - Fee Related
- 2005-01-12 US US10/589,336 patent/US7848594B2/en not_active Expired - Fee Related
- 2005-01-12 WO PCT/JP2005/000205 patent/WO2005078775A1/ja active Application Filing
- 2005-02-05 TW TW094103877A patent/TWI275131B/zh not_active IP Right Cessation
-
2006
- 2006-05-04 KR KR1020067008720A patent/KR101070202B1/ko not_active IP Right Cessation
-
2011
- 2011-05-11 JP JP2011105917A patent/JP5354395B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04132909A (ja) * | 1990-09-25 | 1992-05-07 | Mitsubishi Electric Corp | 電子ビーム寸法測定装置 |
JPH06181155A (ja) * | 1991-06-28 | 1994-06-28 | Digital Equip Corp <Dec> | 実際の半導体ウェーハ工程のトポグラフィーに合わせた位置合せ測定システムの直接的校正のための構造および方法 |
JPH0562882A (ja) * | 1991-09-02 | 1993-03-12 | Nikon Corp | 結像位置測定方法 |
JP2003086497A (ja) * | 2001-09-13 | 2003-03-20 | Sony Corp | リソグラフィ方法 |
JP2004047737A (ja) * | 2002-07-11 | 2004-02-12 | Toshiba Corp | 検査方法及びフォトマスク |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007194551A (ja) * | 2006-01-23 | 2007-08-02 | Nikon Corp | 算出方法、調整方法及び露光方法、並びに像形成状態調整システム及び露光装置 |
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US7848594B2 (en) | 2010-12-07 |
KR20060113703A (ko) | 2006-11-02 |
JP5354395B2 (ja) | 2013-11-27 |
JP4972936B2 (ja) | 2012-07-11 |
JP2011151425A (ja) | 2011-08-04 |
US20070181825A1 (en) | 2007-08-09 |
TWI275131B (en) | 2007-03-01 |
JPWO2005078775A1 (ja) | 2008-01-10 |
KR101070202B1 (ko) | 2011-10-06 |
TW200537597A (en) | 2005-11-16 |
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