WO2014167750A1 - 電子ビーム描画装置、電子ビーム描画方法、および記録媒体 - Google Patents
電子ビーム描画装置、電子ビーム描画方法、および記録媒体 Download PDFInfo
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- WO2014167750A1 WO2014167750A1 PCT/JP2013/082771 JP2013082771W WO2014167750A1 WO 2014167750 A1 WO2014167750 A1 WO 2014167750A1 JP 2013082771 W JP2013082771 W JP 2013082771W WO 2014167750 A1 WO2014167750 A1 WO 2014167750A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
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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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/68—Preparation processes not covered by groups G03F1/20 - G03F1/50
- G03F1/76—Patterning of masks by imaging
- G03F1/78—Patterning of masks by imaging by charged particle beam [CPB], e.g. electron beam patterning of masks
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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
- G03F7/20—Exposure; Apparatus therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
- H01J37/302—Controlling tubes by external information, e.g. programme control
- H01J37/3023—Programme control
- H01J37/3026—Patterning strategy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
- H01J37/317—Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. for ion implantation
- H01J37/3174—Particle-beam lithography, e.g. electron beam lithography
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/30—Electron or ion beam tubes for processing objects
- H01J2237/317—Processing objects on a microscale
- H01J2237/3175—Lithography
- H01J2237/31761—Patterning strategy
- H01J2237/31764—Dividing into sub-patterns
Definitions
- the present invention relates to an electron beam lithography apparatus for performing electron beam lithography.
- Patent Document 1 an electron beam lithography apparatus for performing electron beam lithography has been developed (see Patent Document 1 and Patent Document 2).
- a photomask is used in a lithography process for semiconductor fabrication. Also, with recent miniaturization of photomasks, pattern modification and addition of auxiliary patterns by RET (Resolution Enhancement Technique) typified by OPC (Optical Proximity Effect Correction) has become common.
- RET Resolution Enhancement Technique
- OPC Optical Proximity Effect Correction
- the electron beam drawing apparatus includes a receiving unit that receives input graphic information that is information indicating one or more graphics, and a graphic width acquisition unit that acquires the width of each of the one or more graphics indicated by input graphic information
- a drawing unit that draws one or more approximate figures indicated by the approximate figure information created by the creation unit.
- This configuration can reduce the total number of rectangles during fracturing and reduce drawing time.
- the total number of rectangles at the time of fracturing can be reduced, and the drawing time can be reduced.
- FIG. 1 is a block diagram of an electron beam drawing apparatus 1 according to the first embodiment.
- Figure showing an example of the same figure width Figure showing an example of the same figure width A flowchart for explaining the overall operation of the electron beam lithography apparatus 1 Flowchart for explaining processing for acquiring the same graphic width Flowchart for explaining processing for creating approximate graphic information corresponding to the auxiliary pattern Figure showing an example of the same figure.
- the figure which shows the example of the same bitmap image The figure which shows the example of the same center line
- the figure which shows the example of detection of the same width formation point The figure which shows the example of the same center line Figure showing an example of the same approximate figure Figure showing an example of the same approximate figure
- the figure which shows the example of the figure corresponding to the 1st main pattern and the 2nd main pattern The figure which shows the example of the approximate outline Figure showing an example of the same approximate figure Figure showing an example of the same approximate figure Block diagram of drawing graphic data creation apparatus 2 in Embodiment 2 Figure showing
- the electron beam drawing apparatus 1 uses the input graphic information indicating one or more graphics and a rectangle to create approximate graphic information indicating one or more graphics that approximate the one or more graphics.
- the electron beam drawing apparatus 1 draws one or more figures indicated by the approximate figure information.
- FIG. 1 is a block diagram of an electron beam drawing apparatus 1 in the present embodiment.
- the electron beam drawing apparatus 1 includes a storage unit 10, a reception unit 11, a graphic width acquisition unit 12, a determination unit 13, a creation unit 14, and a drawing unit 15.
- the graphic width acquisition unit 12 includes a distance map creation unit 121 and a graphic width acquisition unit 122.
- the creation unit 14 includes a center line acquisition unit 141, an approximate contour acquisition unit 142, and a creation unit 143.
- the input figure information is information indicating one or more figures to be drawn by the electron beam drawing apparatus 1.
- the shape of the figure does not matter.
- the shape of the figure is usually an elongated shape such as a line shape or a rod shape, or a round shape such as a circle or an ellipse.
- the shape of the figure may be, for example, a shape in which the elongated shape and the round shape are combined.
- the figure usually has a so-called curve.
- the figure is generally called a drawing pattern or a mask pattern.
- the input figure information usually has one or more coordinate sets having at least one coordinate.
- the one coordinate set usually indicates the outline of one figure. That is, for example, when two or more figures are shown, the input figure information usually has two or more coordinate sets.
- one or more coordinates included in the coordinate set usually have an order of points constituting the contour line.
- the coordinate set has 3 or more coordinates.
- the precision of the outline shown by the said coordinate set is not ask
- a graphic identifier for identifying a graphic may be associated with the coordinate set.
- the graphic information may have a coordinate set having the coordinates of four vertices of the rectangle, for example.
- the graphic information may have a coordinate set having the coordinates of the end points of the four sides (straight lines) of the rectangle.
- the graphic information may have a coordinate set having, for example, the coordinates of one reference vertex and information indicating the horizontal width and the vertical width.
- the data format of the input graphic information is not limited.
- the data format of the input graphic information is usually a data format called so-called mask design data or layout design data.
- Specific data formats of the input graphic information are, for example, GDS-2, OASIS, MEBES, and the like.
- the input graphic information may be a so-called image.
- the data format of the image is usually a bitmap.
- the approximate graphic information is information indicating an approximate graphic which is a graphic actually drawn by the electron beam drawing apparatus 1. That is, the approximate figure is usually a figure in which one or more figures indicated by input figure information are divided into rectangles by so-called fracturing. In other words, the approximate figure is usually a figure that approximates one or more figures indicated by the input figure information. An approximate figure is usually composed of one or more rectangles.
- the size of each of the one or more rectangles constituting the approximate figure is usually equal to or less than the maximum shot size, but it may not be so.
- the maximum shot size is the maximum rectangular size that can be drawn by the electron beam drawing apparatus 1 in one drawing.
- the maximum shot size is usually the horizontal length and the vertical length of the rectangle. Further, the maximum shot size may be, for example, the length of the diagonal line of the rectangle, the area of the rectangle, or the like.
- the unit of the maximum shot size is not limited.
- each of the one or more rectangles constituting the approximate figure is usually a rectangle constituted by a horizontal straight line and a vertical straight line.
- a horizontal straight line is a horizontal straight line.
- the vertical straight line is a straight line in the vertical direction.
- the straight line which comprises the said rectangle is a so-called line segment normally.
- the horizontal direction is usually a direction parallel to the horizontal axis (x axis) in the orthogonal coordinate system.
- the vertical direction is usually a direction parallel to the vertical axis (y-axis) in the orthogonal coordinate system.
- the rectangle may be a figure having a predetermined shape such as a circle or an ellipse.
- the approximate graphic information usually has one or more coordinate sets having at least one coordinate.
- the one coordinate set usually indicates one rectangle.
- the data format of approximate graphic information is usually the same as that of input graphic information.
- the storage unit 10 normally stores two or more pattern management information.
- the pattern management information is information in which a graphic classification condition is associated with a pattern identifier.
- the figure classification condition is a condition for classifying one or more figures indicated by input figure information into two or more patterns. Further, the figure classification condition is usually a condition related to the width of the figure.
- the pattern identifier is information for identifying a graphic pattern. The pattern identified by the pattern identifier is usually a pattern based on the graphic width. Moreover, the said pattern is 2 or more normally, and is predetermined.
- the graphic classification conditions are, for example, that the graphic width is equal to or smaller than a predetermined threshold, the graphic width is larger than the predetermined threshold, the graphic width is constant, the graphic width Is not constant.
- the graphic classification condition may be a combination of one or more of these conditions. The combination is usually a logical product (AND), but may be a logical sum (OR).
- the storage unit 10 normally stores two pattern management information.
- the two patterns identified by the pattern identifiers included in each of the two pattern management information are an auxiliary pattern and a main pattern.
- the auxiliary pattern is usually a pattern of a figure that is so small that the figure width satisfies the figure classification condition.
- the auxiliary pattern is usually preferably a linear shape having a certain width.
- the main pattern is usually a graphic pattern that is large enough to satisfy the graphic classification condition.
- the graphic classification condition for classifying into the auxiliary pattern and the graphic classification condition for classifying into the main pattern are usually in a complementary relationship.
- the two graphic classification conditions are a graphic classification condition A and a graphic classification condition B.
- the graphic classification condition A and the graphic classification condition B have the following two relationships. (1) When the figure width satisfies the figure classification condition A, the figure classification condition B is not satisfied. (2) When the width of the graphic satisfies the graphic classification condition B, the graphic classification condition A is not satisfied.
- the graphic classification condition associated with the pattern identifier for identifying the auxiliary pattern is “width ⁇ 20”.
- the graphic classification condition means that the graphic width is “20” or less.
- the graphic classification condition associated with the pattern identifier for identifying the main pattern is normally “width> 20”.
- the graphic classification condition means that the graphic width is larger than “20”.
- the storage unit 10 may store the maximum shot size.
- the maximum shot size is usually information indicating the maximum shot size.
- the storage unit 10 normally stores a pattern identifier for identifying the following two patterns.
- First main pattern a pattern of a figure whose figure size is larger than the maximum shot size among figures corresponding to the main pattern
- second main pattern a figure size among figures corresponding to the main pattern Pattern of which is less than the maximum shot size
- the size of a figure is usually a rectangle circumscribing the figure, and is a horizontal length and a vertical length of a rectangle composed of a horizontal straight line and a vertical straight line.
- the size of the figure may be, for example, the length of the diagonal line of the rectangle or the area of the rectangle.
- the straight line constituting the rectangle circumscribing the figure may be a straight line having a predetermined angle, for example.
- the predetermined angle is usually an angle with respect to the horizontal direction.
- the predetermined angle may be an angle with respect to the vertical direction, for example.
- the storage unit 10 is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium. Moreover, the process in which predetermined information is memorize
- the predetermined information may be stored in the storage unit 10 or the like via a recording medium, a communication line, an input device, or the like.
- the accepting unit 11 accepts input graphic information.
- the reception unit 11 may receive, for example, a graphic width, a maximum shot size, and the like.
- the reception unit 11 normally accumulates the width of the received graphic, the maximum shot size, and the like in the storage unit 10. Further, when accumulating the width of a graphic, the receiving unit 11 usually accumulates the width of the graphic as a graphic classification condition.
- the reception unit 11 may receive auxiliary pattern identification information which is information indicating a graphic corresponding to the auxiliary pattern among one or more figures indicated by the input graphic information.
- the auxiliary pattern identification information usually has a graphic identifier for identifying a graphic corresponding to the auxiliary pattern.
- the reception unit 11 normally accumulates the received maximum shot size in the storage unit 10.
- Acceptance refers to acquisition of information input from an input device such as a touch panel or a keyboard, acquisition of information stored in a recording medium such as an optical disk, magnetic disk, or semiconductor memory, via a wired or wireless communication line. It is a concept that includes reception of information transmitted in the same manner.
- the input means such as information and instructions in the reception unit 11 may be anything such as a menu screen or a keyboard.
- the accepting unit 11 can be realized by control software for a menu screen, a device driver for input means such as a keyboard, and the like.
- the figure width acquisition unit 12 acquires the width of one or more figures indicated by the input figure information (hereinafter, as appropriate, figure width) using the input figure information.
- Acquiring the graphic width usually means acquiring information indicating the width of the graphic.
- the figure width is usually the length of the short side constituting the rectangle circumscribing the figure, but may be the length of the long side constituting the rectangle.
- the rectangle is usually a rectangle having the smallest size among one or more rectangles circumscribing the figure.
- the size here is usually an area.
- the figure width may be, for example, the distance between the width forming points.
- the width forming point is a set of two points among points constituting the contour line of the figure.
- the distance between the width forming points is the distance between the two points.
- the two points are usually intersections of the width forming straight line and the contour line of the figure.
- the width forming straight line is usually a straight line parallel to the short side forming a rectangle circumscribing the figure.
- the width forming straight line may be, for example, a horizontal straight line, a vertical straight line, or a straight line parallel to other directions.
- the figure width may be a set of distances between two or more width forming points, for example.
- the figure width may be an average of the distances between the two or more width forming points.
- the width forming straight line is 2 or more.
- the interval between the two or more width forming straight lines is usually preferably “1”.
- the shape of the figure is a linear shape elongated in the horizontal direction.
- a rectangle composed of a horizontal straight line and a vertical straight line among the one or more rectangles circumscribing the figure is the smallest rectangle.
- the width of the figure is usually the length of the side of the rectangle that circumscribes the figure in the vertical direction.
- the width of the figure is, for example, the distance between the straight line at the lower end and the second straight line from the top among two or more horizontal lines inscribed or circumscribed on the figure, as shown in FIG. May be.
- the width of the figure is, for example, a set of distances of two or more width forming points, which are distances between two points where the two or more width forming straight lines and the contour line intersect, as shown in FIG. Also good.
- the two or more width forming straight lines may have different directions as shown in FIG. 20, for example.
- the width of the figure may be, for example, the average of the distances between the two or more width forming points.
- figure width acquisition unit 12 usually acquires the width of one or more figures by means described below.
- the distance map creating means 121 creates a distance map.
- the distance map is information indicating one or more sets of distances from one or more points constituting the center line of the figure to the outline of the figure for one figure.
- the distance is usually the shortest distance.
- the point is usually indicated by one coordinate.
- the center line of a figure is usually a line composed of midpoints of one or more width forming points.
- the midpoint of the width formation point is the midpoint of two points that are width formation points.
- the distance map may have a distance from a point other than one or more points constituting the center line to the contour of the figure, for example.
- the point is usually a point inside the figure.
- the distance map may be information corresponding to one or more graphics indicated by the input graphic information, or may be information corresponding to all the one or more graphics.
- the data structure of the distance map is not limited.
- the distance map creating means 121 usually creates a distance map using the input graphic information. Further, the distance map creating means 121 may create a distance map using the input graphic information, and its method and procedure are not limited.
- the distance map creating means 121 usually acquires a center line of a graphic and creates a distance map using the center line. Note that acquiring the center line means acquiring a coordinate set indicating the center line.
- the distance map creating means 121 creates a distance map by, for example, any one of the following methods.
- A Method of creating a bitmap image
- B Method of not creating a bitmap image
- the method (A) is a method of creating a distance map using a bitmap format image (hereinafter referred to as a bitmap image as appropriate) indicating one or more graphics indicated by input graphic information.
- a specific procedure for creating a distance map corresponding to one graphic indicated by the input graphic information is as follows, for example. (1) The distance map creating means 121 creates a bitmap image indicating one graphic indicated by the input graphic information using the input graphic information. (2) The distance map creation unit 121 acquires one or more coordinates indicating one or more points constituting the contour line of the figure using the bitmap image created in (1). (3) The distance map creation unit 121 acquires one or more coordinate sets indicating one or more width formation points using the one or more coordinates acquired in (2).
- the coordinate set usually has two coordinates.
- the distance map creation unit 121 uses one or more coordinate sets acquired in (3) to indicate one or more points indicating the midpoint between two points indicated by the two coordinates of the one or more coordinate sets. Get the coordinates of.
- the acquired one or more coordinates are coordinates indicating one or more points constituting the center line.
- the distance map creating means 121 uses the one or more coordinates acquired in (2) and the one or more coordinates acquired in (4) to start from the point indicated by one or more coordinates indicating the center line. The distance to the contour line is calculated.
- the distance map creating means 121 may calculate, for example, coordinates indicating a point between two points constituting the contour line by so-called interpolation.
- the interpolation is, for example, linear interpolation.
- the method (B) is a method of creating a distance map using input graphic information without creating a bitmap image. That is, this method is not usually used when the input graphic information is a bitmap image.
- a specific procedure for creating a distance map corresponding to one graphic indicated by the input graphic information is as follows, for example. (1) The distance map creating means 121 acquires one or more coordinates indicating one or more points constituting the contour line of the graphic using the input graphic information. (2) The distance map creating unit 121 acquires one or more coordinate sets indicating one or more width forming points using one or more coordinates indicating the contour line acquired in (1). The coordinate set usually has two coordinates.
- the distance map creation unit 121 uses one or more coordinate sets acquired in (2) to indicate one or more points indicating a midpoint between two points indicated by two coordinates of the one or more coordinate sets. Get the coordinates of.
- the acquired one or more coordinates are coordinates indicating one or more points constituting the center line.
- the distance map creation unit 121 uses the one or more coordinates acquired in (1) and the one or more coordinates acquired in (3) to start from the point indicated by one or more coordinates indicating the center line. The distance to the contour line is calculated.
- the distance map creating means 121 may calculate, for example, coordinates indicating points between two points by so-called interpolation.
- the interpolation is, for example, linear interpolation.
- the figure width acquisition unit 122 acquires the width of each of one or more figures indicated by the input figure information.
- the method and procedure for obtaining the graphic width are not limited.
- the graphic width acquisition unit 122 acquires the graphic width by any of the following methods, for example.
- a specific procedure for acquiring the width of one graphic indicated by the input graphic information is as follows, for example.
- the figure width obtaining unit 122 obtains the distance to the contour line corresponding to one or more points constituting the center line of the figure from the distance map.
- the figure width acquisition unit 122 acquires one or more values obtained by doubling each of the one or more distances acquired in (1). The acquired value is the figure width.
- the figure width acquisition unit 122 may acquire, for example, an average of one or more acquired values as the figure width.
- the graphic width acquisition unit 122 may acquire, for example, the maximum or minimum value among the acquired one or more values as the graphic width.
- a specific procedure for acquiring the width of one graphic indicated by the input graphic information is as follows, for example.
- the figure width obtaining unit 122 obtains one or more coordinates indicating one or more points constituting the outline of the figure from the input figure information.
- the figure width acquisition unit 122 acquires one or more coordinate sets indicating one or more width formation points using the one or more coordinates acquired in (1).
- the coordinate set usually has two coordinates.
- the graphic width acquisition unit 122 uses the one or more coordinate sets acquired in (2), and is one or more that is a distance between two points indicated by two coordinates of the one or more coordinate sets. Get the distance.
- the acquired one or more distances are figure widths.
- the figure width acquisition unit 122 may acquire, for example, the average of one or more acquired distances as the figure width.
- the graphic width acquisition unit 122 may acquire, for example, the maximum or minimum distance among the acquired one or more distances as the graphic width.
- the determination unit 13 determines whether one or more figures indicated by the input figure information are two or more patterns based on the width of the figure.
- the determination usually means obtaining a pattern identifier indicating the determination result.
- the determination unit 13 normally determines which of the two or more graphic classification conditions stored in the storage unit 10 the graphic width acquired by the graphic width acquisition unit 12 satisfies. Then, the determination unit 13 acquires a pattern identifier associated with the graphic classification condition determined to be satisfied. Then, the determination unit 13 determines that the graphic for which the graphic width is acquired is a pattern identified by the acquired pattern identifier.
- the determination unit 13 determines that the graphic width satisfies the graphic classification condition.
- the graphic classification condition means that the graphic width is 10 or more and 30 or less and the graphic width is constant. In such a case, the determination unit 13 determines that the one or more graphic widths satisfy the graphic classification condition.
- the determination unit 13 determines whether or not the size of the graphic that is determined to be the main pattern is larger than the maximum shot size.
- the storage unit 10 stores a maximum shot size, a pattern identifier that identifies the first main pattern, and a first identifier that identifies the second main pattern. For example, when the size of the figure is larger than the maximum shot size, the determination unit 13 acquires a pattern identifier for identifying the first main pattern. For example, when the size of the figure is equal to or smaller than the maximum shot size, the determination unit 13 acquires a pattern identifier for identifying the second main pattern.
- the determination unit 13 acquires, for example, a rectangle circumscribing the graphic for the graphic determined to be the main pattern.
- the rectangle is usually a rectangle composed of a horizontal straight line and a vertical straight line.
- the determination unit 13 determines whether or not the acquired rectangle size is larger than the maximum shot size.
- the determination unit 13 compares the lengths in the horizontal direction, the lengths in the vertical direction, the lengths of the diagonal lines, the areas of the rectangles, and the maximum shot size.
- the determination unit 13 determines that the size of the figure is larger than the maximum shot size when any one of the horizontal length, the vertical length, the diagonal length, the area, and the like is larger than the maximum shot size. to decide.
- the figure size is usually acquired by a figure size acquisition unit (not shown).
- the figure size acquisition unit usually acquires the size of one or more figures indicated by the input figure information using the input figure information. Since the method and procedure for obtaining the size of the figure are known, detailed description thereof will be omitted.
- the creation unit 14 creates approximate figure information using the input figure information.
- the creating unit 14 usually creates approximate graphic information indicating one or more approximate figures that approximate one or more respective figures by different methods according to the pattern identifier acquired by the determination unit 13. Further, the creating unit 14 usually creates approximate figure information for each of one or more figures indicated by the input figure information. Then, the creation unit 14 combines the created one or more pieces of approximate graphic information to create one piece of approximate graphic information.
- creating unit 14 usually creates approximate graphic information by means described below.
- the center line acquisition means 141 acquires the center line of one or more figures using the input figure information.
- the one or more figures are usually figures determined by the determination unit 13 as auxiliary patterns. Further, the one or more figures may be, for example, figures determined by the determination unit 13 as the main pattern.
- the distance map creating unit 121 when the distance map creating unit 121 creates a distance map, the distance map creating unit 121 usually acquires a center line of one or more figures indicated by the input figure information. Therefore, in this case, the center line acquisition unit 141 normally acquires the center line of the figure corresponding to the auxiliary pattern from the distance map generation unit 121 among the center lines acquired when the distance map is generated. For example, when the distance map creation unit 121 does not create a distance map, the center line acquisition unit 141 usually acquires the center line of the figure corresponding to the auxiliary pattern using the input figure information. Since the method and procedure for acquiring the center line are the same as the method and procedure for acquiring the center line by the distance map creating means 121, description thereof will be omitted.
- the approximate contour acquisition unit 142 acquires the approximate contour using the input graphic information.
- the approximate contour is a contour of one or more figures, and is generally a contour composed of a horizontal straight line and a vertical straight line. Further, the approximate contour line may be constituted by a straight line having a predetermined angle, for example.
- acquiring the approximate contour line usually means acquiring a coordinate set indicating the approximate contour line.
- the one or more figures are usually figures determined by the determination unit 13 as the main pattern.
- the contour line of the graphic indicated by the input graphic information is hereinafter appropriately referred to as the original contour line.
- the approximate contour acquisition unit 142 usually acquires the approximate contour so that the error between the original contour and the approximate contour becomes small enough to satisfy a predetermined condition (hereinafter, an error condition as appropriate).
- the error between the original outline and the approximate outline is, for example, the difference between the size of the figure indicated by the original outline and the size of the figure indicated by the approximate outline, or the length of the original outline and the length of the approximate outline. And the number of intersections between the original contour line and the approximate contour line.
- the difference may be, for example, a ratio or a ratio.
- the error condition is, for example, that the error is equal to or less than a predetermined threshold, or that the error is within a predetermined range.
- the approximate contour acquisition unit 142 determines whether or not an error between the original contour and the approximate contour satisfies the error condition, for example. For example, when the error does not satisfy the error condition, the approximate contour acquisition unit 142 enlarges or reduces the graphic indicated by the approximate contour so that the error satisfies the error condition.
- the approximate contour line may be, for example, a polygon inscribed in the figure, a polygon inscribed in the figure, or not both.
- the method and procedure for obtaining the approximate contour so that the error between the original contour and the approximate contour satisfies the error condition are well known, and detailed description thereof will be omitted.
- the method is, for example, quantization. That is, for example, the approximate contour can be obtained by regarding the original contour as a so-called analog signal waveform and quantizing the original contour.
- the creation unit 143 creates approximate graphic information according to the pattern identifier acquired by the determination unit 13.
- the approximate graphic information is approximate graphic information indicating an approximate graphic that approximates a graphic corresponding to the pattern of the graphic identified by the pattern identifier.
- Creating approximate graphic information usually means acquiring one or more pieces of coordinate information indicating one or more rectangles constituting the approximate graphic.
- “create approximate graphic information” is hereinafter referred to as “create approximate graphic” as appropriate.
- the figure indicated by the input figure information is hereinafter appropriately referred to as an original figure.
- the approximate figure is usually created by arranging a rectangle by a predetermined method or procedure, or by dividing the figure indicated by the input figure information into one or more rectangles.
- the figure pattern identified by the pattern identifier acquired by the determination unit 13 is usually one of the following.
- the creating unit 143 normally arranges one or more rectangles that match the width of the figure along the center line of the figure corresponding to the auxiliary pattern. Then, the creating unit 143 creates one or more approximate figures that approximate one or more figures corresponding to the auxiliary pattern by the arrangement.
- the term “along the center line” usually means that the center of the rectangle is arranged so as to overlap the center line. Further, along the center line, for example, any one of the four vertices of the rectangle or any one of the four sides constituting the rectangle is arranged so as to overlap the center line. It may be.
- the creating unit 143 when arranging along the center line, the creating unit 143 normally arranges the rectangles sequentially from one end point of the center line toward the other end point of the center line. In addition, the creating unit 143 may arrange one or more rectangles that match the width of the graphic without following the center line of the graphic corresponding to the auxiliary pattern, for example.
- a rectangle that conforms to the width of a figure usually has a short side length, a long side length, or a diagonal length that is determined by the width of the figure and a predetermined condition (hereinafter appropriately, The rectangle is close enough to satisfy the (rectangular size condition).
- the rectangle size condition is usually a condition related to the size of the rectangle.
- the size of the rectangle is, for example, one of the length of the short side of the rectangle, the length of the long side of the rectangle, and the length of the diagonal line of the rectangle.
- position may differ in size for every arrangement
- the creating unit 143 normally arranges the rectangles so that the rectangles do not overlap each other. “To prevent the rectangles from overlapping each other” usually means arranging the rectangles so as to be adjacent to the already arranged rectangles.
- the creation unit 143 may arrange the rectangles so that the rectangles overlap, for example.
- “To make the rectangles overlap” usually means to arrange the rectangles so that the size of the portion that overlaps the already arranged figure satisfies a predetermined condition (hereinafter referred to as overlap amount condition as appropriate) It is.
- the overlap amount condition is usually a condition related to the size (area) of the portion where the figures overlap. Further, the overlap amount condition may be, for example, a condition relating to a ratio of the size of the overlapping portion to the size of the arranged graphic.
- the creating unit 143 normally arranges the rectangles so that the rectangles are adjacent to each other. .
- the creation unit 143 determines the position where the rectangle is to be arranged next, the size of the rectangle to be arranged, and the like using the position of the arranged rectangle, the size of the arranged rectangle, and the like.
- the position is, for example, coordinates corresponding to the center of the rectangle, coordinates corresponding to any one or more of the four vertices of the rectangle, and the like.
- the position and size may be calculated by, for example, a predetermined calculation formula.
- the calculation formula includes, for example, a variable indicating the width of the rectangle, the height of the rectangle, the position of the rectangle, and other constants.
- the creating unit 143 usually creates the approximate figure so that the error between the original figure and the approximate figure becomes small enough to satisfy the error condition.
- the error between the original figure and the approximate figure is, for example, the difference between the size of the original figure and the size of the approximate figure, the difference between the length of the outline of the original figure and the length of the outline of the approximate figure, the outline of the original figure The number of intersections between the line and the outline of the approximate figure.
- the “difference” may be, for example, a ratio or a ratio.
- the creating unit 143 determines whether or not an error between the original graphic and the approximate graphic satisfies the error condition. For example, when the error does not satisfy the error condition, the creating unit 143 performs, for example, re-rectangular arrangement or enlargement or reduction of the approximate figure so that the error satisfies the error condition.
- the creating unit 143 arranges one or more rectangles along the center line of the figure for the figure corresponding to the auxiliary pattern, so that an approximate figure whose error from the size of the figure satisfies the error condition is small. It only has to be created. Moreover, the method and procedure etc. which produce the said approximate figure are not ask
- the creating unit 143 normally arranges one or more rectangles that conform to the shape of the figure indicated by the approximate outline of the figure corresponding to the first main pattern. Then, the creation unit 143 creates one or more approximate figures that approximate one or more figures corresponding to the first main pattern by the arrangement.
- a rectangle that conforms to the shape of the graphic indicated by the approximate contour is usually a rectangle that is smaller in size than the graphic indicated by the approximate contour.
- the approximate contour line is usually the approximate contour line acquired by the approximate contour line acquisition unit 142.
- the creation unit 143 normally arranges a rectangle along the approximate contour line. “Along the approximate outline” means that the arranged rectangle does not protrude from the approximate outline and there is no gap.
- the creating unit 143 may arrange the rectangles so that the rectangles do not overlap each other, or may arrange the rectangles so that the rectangles overlap each other.
- the creating unit 143 usually arranges the rectangles so as to satisfy the overlapping amount condition.
- the creating unit 143 normally arranges the rectangles so that the total number of rectangles is reduced. Since a method and a procedure for arranging rectangles having a size equal to or smaller than a predetermined size along a predetermined polygonal outline so as to reduce the total number are well known, detailed description will be made. Is omitted.
- the predetermined polygon is a figure indicated by the approximate outline here.
- the creating unit 143 normally divides the figure indicated by the approximate outline into two or more rectangles along the approximate outline of the figure corresponding to the second main pattern.
- “Along the approximate contour line” usually means that a straight line that divides a figure indicated by the approximate contour line is divided so as to overlap a horizontal straight line or a vertical straight line that constitutes the approximate contour line.
- “dividing into rectangles” usually means dividing in one of the horizontal direction and the vertical direction. Then, the creation unit 143 creates one or more approximate figures that approximate one or more figures corresponding to the second main pattern by the division.
- the creating unit 143 usually divides the approximate contour line into two or more rectangles in the horizontal direction or the vertical direction along the approximate contour line so that the total number of rectangles is reduced. For example, the creating unit 143 divides the figure indicated by the approximate contour line in each of the horizontal direction and the vertical direction, and creates two approximate figures. Then, the creation unit 143 acquires the approximate figure having the smaller number of rectangles obtained by the division.
- the creating unit 143 normally adds the graphic to the graphic by a predetermined method or procedure. Approximate graphic information indicating the corresponding approximate graphic is created.
- the creation method information usually represents an algorithm for creating approximate graphic information.
- the creation method information includes, for example, an execution program for creating approximate graphic information from input graphic information, a source code indicating a procedure for generating approximate graphic information from input graphic information, a pseudo program code indicating the procedure, and the procedure.
- the pseudo program code is an algorithm described as a programming language using a natural language.
- the grammar of the pseudo program code is usually similar to that of an existing programming language.
- the drawing unit 15 draws one or more approximate figures indicated by the approximate figure information created by the creation unit 14.
- the drawing target is not limited.
- the drawing target is, for example, a photomask or a wafer.
- the drawing unit 15 can usually be realized by an electron gun such as a field emission type, a Schottky type, or a thermoelectron type, an electron lens, a height detector, and the like.
- the shape of the cross section of the electron beam emitted from the drawing unit 15 is usually a rectangle.
- the processing procedure of the drawing unit 15 is usually realized by software, and the software is recorded on a recording medium such as a ROM.
- the figure width acquisition unit 12, the distance map creation unit 121, the figure width acquisition unit 122, the determination unit 13, the creation unit 14, the center line acquisition unit 141, the approximate contour acquisition unit 142, and the creation unit 143 are usually MPU, It can be realized from a memory or the like.
- the processing procedure of the figure width acquisition unit 12 and the like is usually realized by software, and the software is recorded in a recording medium such as a ROM.
- the figure width acquisition unit 12 and the like may be realized by hardware (dedicated circuit).
- FIG. 4 is a flowchart showing the overall operation of the electron beam drawing apparatus 1.
- Step S401 The graphic width acquisition unit 12 determines whether or not the reception unit 11 has received input graphic information. If accepted, the process proceeds to step S402; otherwise, the process returns to step S401.
- the input figure information indicates m figures.
- Step S402 The creation unit 14 sets 1 to the counter i.
- Step S403 The graphic width acquisition unit 12 acquires the graphic width of the graphic [i]. Details of this processing will be described with reference to the flowchart of FIG.
- Step S404 The determination unit 13 determines whether or not the graphic width acquired in Step S403 satisfies the graphic classification condition. If so, the process proceeds to step S405. Otherwise, the process proceeds to step S406.
- Step S405 The creation unit 14 creates an approximate figure corresponding to the figure [i] corresponding to the auxiliary pattern. Details of this processing will be described with reference to the flowchart of FIG.
- Step S406 The approximate contour acquisition means 142 acquires the approximate contour corresponding to the figure [i].
- Step S407 The determination unit 13 determines whether the size of the figure [i] is larger than the maximum shot size. If it is larger than the maximum shot size, the process proceeds to step S408, and if not, the process proceeds to step S409.
- Step S408 The creating unit 143 arranges one or more rectangles along the approximate contour acquired in Step S406. With this arrangement, the creation unit 143 creates an approximate figure corresponding to the figure [i].
- Step S409 The creation unit 143 divides the figure indicated by the approximate contour into two or more rectangles along the approximate contour acquired in Step S406. By the division, the creating unit 143 creates an approximate figure corresponding to the figure [i].
- Step S410 The creation unit 14 determines whether i is m. When it is m, it progresses to step S412, and when that is not right, it progresses to step S411.
- Step S411 The creation unit 14 increments i by 1. Then, the process returns to step S403.
- Step S412 The drawing unit 15 draws one or more approximate figures created in steps S403 to S409.
- the process may be terminated by turning off the power or by interrupting the process.
- step S403 may be performed for each of the m figures.
- processing from step S404 to step S409 is performed for each of the m figures.
- step S404 is synonymous with the following process of step S404-1.
- Step S404-1 The determination unit 13 acquires, from the storage unit 10, the pattern identifier corresponding to the graphic classification condition that the graphic width satisfies.
- the process proceeds to step S405. If the pattern identifier for identifying the main pattern is acquired, the process proceeds to step S406.
- step S407 is synonymous with the following process in step S407-1.
- Step S407-1 The determination unit 13 determines whether the size of the figure [i] is larger than the maximum shot size. When larger than the maximum shot size, the determination unit 13 acquires a pattern identifier for identifying the first main pattern from the storage unit 10. If it is not larger than the maximum shot size, the determination unit 13 acquires a pattern identifier for identifying the second main pattern from the storage unit 10. If the pattern identifier for identifying the first main pattern is acquired, the process proceeds to step S408. If the pattern identifier for identifying the second main pattern is acquired, the process proceeds to step S409.
- FIG. 5 is a flowchart showing the graphic width acquisition process in step S403 of the flowchart of FIG.
- “figure [i]” in the flowchart of FIG. 4 is expressed as “figure”.
- Step S501 The distance map creating means 121 creates a bitmap image of the figure using the input figure information.
- Step S502 The distance map creating means 121 uses the bitmap image created in Step S501 to obtain the contour line of the figure.
- Step S503 The distance map creating means 121 obtains the center line of the figure using the contour line obtained in Step S502. Here, it is assumed that the center line is composed of m points.
- Step S504 The distance map creating means 121 sets 1 to the counter i.
- Step S505 The distance map creating means 121 obtains the shortest distance from the point [i] to the contour line obtained in Step S502.
- Step S506 The width acquisition unit 122 doubles the distance acquired in Step S505, and sets it to the width [i] of the figure at the point [i].
- Step S507 The distance map creating means 121 determines whether i is m. When it is m, it progresses to step S509, and when that is not right, it progresses to step S508.
- Step S508 The distance map creating means 121 increments i by 1. Then, the process returns to step S505.
- Step S509 The distance map creating means 121 sets the average of the m widths acquired in Step S506 as the figure width. Then, the process returns to the upper process.
- FIG. 6 is a flowchart showing a process for creating approximate graphic information corresponding to the auxiliary pattern in step S405 of the flowchart of FIG.
- “figure [i]” in the flowchart of FIG. 4 is expressed as “figure”.
- Step S601 The center line acquisition means 141 acquires the center line of the figure.
- Step S602 The creation unit 143 sets the start coordinates of the center line acquired in Step S601 to the arrangement position.
- the start coordinate of the center line is a coordinate indicating one of the end points at both ends of the center line.
- Step S603 The creation unit 143 determines the size of the rectangle to be arranged according to the width of the figure at the arrangement position.
- Step S604 The creation unit 143 arranges the rectangle whose size is determined in Step S603 at the arrangement position.
- Step S605 The creation unit 143 determines whether or not the size of the portion where the rectangle arranged in Step S604 overlaps the rectangle already arranged satisfies the overlap amount condition. If the overlap amount condition is satisfied, the process proceeds to step S607. Otherwise, the process proceeds to step S606.
- Step S606 The creation unit 143 arranges the rectangles arranged in Step S604 so that the size of the portion where the rectangle arranged in Step S604 overlaps the already arranged rectangle satisfies the overlap amount condition. Change position and size.
- Step S607 The creation unit 143 determines the position and size of the next rectangle to be arranged according to the size of the rectangle arranged in Step S604, the width of the figure at the position where Step S604 is arranged, and the like.
- Step S608 The creation unit 143 determines whether or not the arrangement position is larger than the end coordinates of the center line.
- the end coordinate of the center line is a coordinate indicating a point that is not the point indicated by the start coordinate among the end points at both ends of the center line. If it is larger than the end coordinate, the process returns to the upper process, and if not, the process returns to step S604.
- Example 1 In this example, an example in which a figure width is acquired using a distance map will be described.
- the receiving unit 11 receives input graphic information indicating the graphic shown in FIG.
- the distance map creating means 121 creates the bitmap image shown in FIG. 8 using the input graphic information received by the receiving unit 11.
- the bitmap image is an image in which the inside of the figure in FIG. 7 is “white” and the outside of the figure is “black”.
- the distance map creating means 121 uses the bitmap image of FIG. 8 to obtain a coordinate set indicating the contour line of the figure indicated by the bitmap image.
- the distance map creation unit 121 detects, for example, two pixels in which a white pixel and a black pixel are adjacent to each other in the bitmap image of FIG. Then, the distance map creating unit 121 acquires one or more coordinates indicating the position of the white pixel.
- the “adjacent” may be up and down or left and right.
- the distance map creating means 121 calculates an average of y coordinates of two coordinates having the same x coordinate, using a coordinate set indicating an outline. Then, the distance map creating unit 121 obtains one or more coordinates indicating the midpoint between the two coordinates, and obtains the center line shown in FIG.
- the distance map creation unit 121 calculates the distance to the contour line from the point indicated by one or more coordinates indicating the center line, using the coordinate set indicating the contour line and the coordinate set indicating the center line. To do. At this time, the distance map creating unit 121 calculates the distance to the contour line for points other than the center line, for example. At this time, the distance map creating unit 121 calculates, for example, the distance to the contour line as “0” for the points outside the figure in FIG. As a result, the created distance map is, for example, FIG. Each cell in FIG. 10 corresponds to each pixel in the bitmap image in FIG. In FIG. 10, a cell whose value is “0” corresponds to a pixel outside the graphic of FIG. 7, and a cell whose value is not “0” corresponds to a pixel inside the graphic of FIG. 7. In FIG. 10, a cell having a value of “90” corresponds to a pixel (point) constituting the center line in FIG.
- the figure width acquisition means 122 acquires the distance to the contour line corresponding to one or more points constituting the center line from the distance map of FIG.
- the graphic width acquisition unit 122 acquires the distance “90” corresponding to the upper end point with respect to the center line in FIG. 9.
- the graphic width acquisition unit 122 doubles the acquired distance and acquires the graphic width “180” corresponding to the end point.
- the graphic width acquisition unit 122 normally performs the same processing as described above for one or more points constituting the center line, and acquires the graphic width corresponding to the one or more points.
- Example 2 In this example, an example in which a figure width is acquired without using a distance map will be described.
- the receiving unit 11 receives input graphic information indicating the graphic shown in FIG.
- the figure width acquisition unit 122 has two or more widths that are the intersections of two or more straight lines parallel to the short side constituting the minimum rectangle circumscribing the figure and the outline of the figure. Detect formation points. Then, the graphic width obtaining unit 122 obtains two or more coordinate sets having two coordinates indicating the two or more width forming points.
- the interval between the two or more straight lines is assumed to be “1” in FIG.
- the figure width acquisition unit 122 calculates the distance between two points indicated by the two coordinates of the coordinate set. Then, the graphic width acquisition unit 122 acquires a graphic width corresponding to each of the one or more intersections.
- Example 3 In this example, an example of creating an approximate graphic corresponding to a graphic corresponding to an auxiliary pattern will be described.
- the figure corresponding to the auxiliary pattern is the figure shown in FIG. That is, the figure is a figure for which the pattern identifier for identifying the auxiliary pattern is acquired by the determination unit 13.
- the graphic classification conditions at this time are, for example, the following conditions.
- Figure classification condition The figure width is 200 or less and the figure width is constant.
- the center line acquisition means 141 acquires the center line of the figure of FIG. 7, as shown in FIG. 12, using the input information indicating the figure of FIG.
- An example of acquiring the center line is the same as that in Example 1, and thus the description thereof is omitted.
- the creation means 143 arranges one or more rectangles along the center line of FIG. At this time, the creation unit 143 arranges the rectangles in order from the upper end to the lower end of the center line in FIG. At this time, the creating unit 143 arranges the center of the rectangle to be arranged, any one of the four vertices, or any one of the midpoints of the four sides so as to overlap the center line. . At this time, the creation unit 143 arranges the rectangles so that the rectangles do not overlap each other. At this time, the creation unit 143 also determines the size of the placed rectangle, the placed position, the distance between two points that are the intersection of the horizontal straight line and the contour of the figure at the placed position, and the like. Next, the size of the rectangle to be arranged is determined.
- FIG. 13 shows an example of the approximate graphic created by the creation unit 143 as a result of the arrangement.
- the creating means 143 first arranges a rectangle (rectangle a in FIG. 13) circumscribing the upper end of the figure.
- the horizontal width of the rectangle a is, for example, the distance between two points that are the intersections of the contour line of the figure in FIG. 12 and the horizontal straight line.
- the vertical width of the rectangle is determined so that, for example, the error between the original figure and the approximate figure satisfies the error condition, and the total number of rectangles is minimized.
- the creating unit 143 arranges the rectangle b in FIG. 13 adjacent to the rectangle a in FIG.
- the horizontal width and vertical width of the rectangle b are the same as the horizontal width and vertical width of the rectangle a, for example.
- the creating unit 143 arranges the rectangles c, d, e, f, g, h, i, j, k, and l in FIG. 13 in order, similarly to the rectangle b in FIG.
- FIG. 14 shows an example of the approximate figure created by the creation unit 143 as a result of arranging the rectangles so as to overlap each other.
- the creating unit 143 first arranges a rectangle (rectangle a in FIG. 14) circumscribing the upper end of the figure.
- the horizontal width of the rectangle a is, for example, the distance between two points that are the intersections of the contour line of the figure in FIG. 12 and the horizontal straight line.
- the vertical width of the rectangle is selected randomly within a predetermined vertical width range, for example.
- the creating unit 143 arranges the rectangle b in FIG. 14 adjacent to the rectangle a in FIG.
- the horizontal width and vertical width of the rectangle b are the same as the horizontal width and vertical width of the rectangle a, for example.
- the creating unit 143 arranges the rectangle c in FIG. 14 that overlaps the rectangle b in FIG.
- the width of the rectangle c is the same as the width of the rectangle b, for example.
- the vertical width of the rectangle c is, for example, twice the vertical width of the rectangle b.
- the creation unit 143 arranges the rectangles d, e, f, g, h, i, and j in FIG. 14 in order, similarly to the rectangle c in FIG.
- Example 4 In this example, an example of creating an approximate graphic corresponding to the graphic corresponding to the first main pattern will be described.
- the figure corresponding to the first main pattern is the figure shown in FIG. That is, the figure is a figure from which the determination unit 13 has acquired the pattern identifier for identifying the main pattern and the pattern identifier for identifying the first main pattern.
- the graphic classification conditions at this time are, for example, the following conditions.
- the maximum shot size at this time is, for example, the following size. ( Figure classification condition)
- the figure width is larger than 200 (maximum shot size) 250 ⁇ 250
- the approximate contour acquisition unit 142 uses the input graphic information indicating the graphic of FIG. 15 to quantize the contour of the graphic of FIG. 15 and acquire the approximate contour of the graphic as shown in FIG. .
- a dotted line shows the outline of the figure of FIG.
- the creation means 143 arranges one or more rectangles having a size equal to or smaller than the maximum shot size along the contour line in FIG.
- FIG. 17 shows an example of the approximate graphic created by the creation means 143 as a result of the arrangement.
- the creating unit 143 first arranges the largest rectangle (rectangle a in FIG. 17) that is not larger than the maximum shot size and fits within the contour line in FIG. 16.
- the creation unit 143 arranges the largest rectangle that can be placed in the region that is adjacent to the rectangle a in FIG. 17 for the region in which the rectangle in the outline in FIG. 16 is not placed.
- the rectangles are the rectangle b1 and the rectangle b2 in FIG.
- the creating unit 143 arranges the rectangles c1, c2, d1, and d2 in FIG. 17 in order, similarly to the rectangles b1 and b2 in FIG. Finally, the creating unit 143 arranges the rectangles e1 and e2 in FIG.
- Example 5 In this example, an example of creating an approximate graphic corresponding to a graphic corresponding to the second main pattern will be described.
- the figure corresponding to the second main pattern is the figure shown in FIG. That is, the figure is a figure from which the pattern identifier for identifying the main pattern and the pattern identifier for identifying the second main pattern are acquired by the determination unit 13.
- the graphic classification conditions at this time are, for example, the following conditions.
- the maximum shot size at this time is, for example, the following size. ( Figure classification condition)
- the figure width is larger than 200 (maximum shot size) 250 ⁇ 250
- the approximate contour acquisition unit 142 uses the input graphic information indicating the graphic of FIG. 15 to quantize the contour of the graphic of FIG. 15 and acquire the approximate contour of the graphic as shown in FIG. .
- a dotted line shows the outline of the figure of FIG.
- the creating unit 143 divides the figure indicated by the contour line in FIG. 16 into rectangles in order from the top along the horizontal straight line constituting the contour line.
- FIG. 18 shows an example of the approximate graphic created by the creation means 143 as a result of the division.
- the creating unit 143 first divides the figure indicated by the contour line along the second horizontal straight line from the top. As a result, a rectangle a in FIG. 18 is created.
- the creating unit 143 divides the graphic indicated by the contour line along the third horizontal straight line from the top of the contour line in FIG. As a result, a rectangle b in FIG. 18 is created.
- the creating unit 143 sequentially divides the figure indicated by the contour line in FIG.
- rectangles c to i in FIG. 18 are created.
- the size of each rectangle in FIG. 18 is necessarily less than or equal to the maximum shot size.
- the total number of rectangles during fracturing can be reduced, and the drawing time can be reduced.
- FIG. 19 is a block diagram of the drawing graphic data creation apparatus 2 in the present embodiment.
- the drawing graphic data creation device 2 includes a reception unit 11, a graphic width acquisition unit 12, a determination unit 13, and a creation unit 14.
- the graphic width acquisition unit 12 includes a distance map creation unit 121 and a graphic width acquisition unit 122.
- the creation unit 14 includes a center line acquisition unit 141, an approximate contour acquisition unit 142, and a creation unit 143.
- the approximate graphic information created by the drawing graphic data creation device 2 is transmitted to a device for drawing a graphic (for example, the electron beam drawing device 1 of the first embodiment). Then, the device that has received the approximate graphic information draws one or more graphics indicated by the approximate graphic information.
- the electron beam drawing apparatus in each of the above embodiments may be, for example, a stand-alone apparatus or a server apparatus in a server / client system.
- each process or each function may be realized by centralized processing by a single device or a single system, or distributed by a plurality of devices or a plurality of systems. It may be realized by being processed.
- each component may be configured by dedicated hardware, or a component that can be realized by software may be realized by executing a program.
- each component can be realized by a program execution unit such as a CPU reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.
- the software that realizes the electron beam drawing apparatus in each of the above embodiments is, for example, the following program. That is, this program causes the computer to receive input graphic information that is information indicating one or more graphics, a graphic width acquisition unit that acquires the width of each of the one or more graphics indicated by the input graphic information, A creation unit for creating approximate figure information indicating one or more approximate figures that are figures composed of one or more rectangles conforming to the width of the figure and that are approximate to one or more figures indicated by the input figure information And a program for causing the drawing unit to function as a drawing unit that draws one or more approximate figures indicated by the approximate figure information created by the creation unit.
- the software that realizes the drawing graphic data creation device in each of the above embodiments is, for example, the following program. That is, this program causes the computer to receive input graphic information that is information indicating one or more graphics, a graphic width acquisition unit that acquires the width of each of the one or more graphics indicated by the input graphic information, A creation unit for creating approximate figure information indicating one or more approximate figures that are figures composed of one or more rectangles conforming to the width of the figure and that are approximate to one or more figures indicated by the input figure information It is a program to make it function as.
- the functions realized by the program do not include functions that can only be realized by hardware.
- the program may be executed by being downloaded from a server or the like, or a program recorded on a predetermined recording medium (for example, an optical disk such as a CD-ROM, a magnetic disk, a semiconductor memory, etc.) is read out. May be executed. Further, this program may be used as a program constituting a program product.
- a predetermined recording medium for example, an optical disk such as a CD-ROM, a magnetic disk, a semiconductor memory, etc.
- the computer that executes the program may be singular or plural. That is, centralized processing may be performed, or distributed processing may be performed.
- FIG. 21 is an overview of the computer system 9 that executes the above-described program to realize the electron beam drawing apparatus and the like of the above-described embodiment.
- the above-described embodiments can be realized by computer hardware and a computer program executed thereon.
- the computer system 9 includes a computer 901 including a CD-ROM drive 9011 and an FD drive 9012, a keyboard 902, a mouse 903, and a monitor 904.
- FIG. 22 is a block diagram of the computer system 9.
- a computer 901 is connected to an MPU 9013, a ROM 9014 for storing a program such as a boot-up program, and an MPU 9013 in addition to a CD-ROM drive 9011 and an FD drive 9012, and temporarily commands the application program.
- the computer 901 may further include a network card that provides connection to a LAN.
- a program for causing the computer system 9 to execute the functions of the electron beam drawing apparatus of the above-described embodiment is stored in the CD-ROM 9101 or the FD 9102, inserted into the CD-ROM drive 9011 or the FD drive 9012, and further a hard disk 9016 may be transferred.
- the program may be transmitted to the computer 901 via a network (not shown) and stored in the hard disk 9016.
- the program is loaded into the RAM 9015 when executed.
- the program may be loaded directly from the CD-ROM 9101, the FD 9102, or the network.
- the program does not necessarily include an operating system (OS) or a third-party program that causes the computer 901 to execute the functions of the electron beam drawing apparatus of the above-described embodiment.
- the program only needs to include an instruction portion that calls an appropriate function (module) in a controlled manner and obtains a desired result. How the computer system 9 operates is well known and will not be described in detail.
- the electron beam drawing apparatus has the effect of reducing the total number of rectangles at the time of fracturing and reducing the drawing time, and can draw various figures on a photomask, a wafer, or the like. It is useful as an electron beam drawing apparatus.
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Abstract
Description
本実施の形態において、電子ビーム描画装置1について説明する。電子ビーム描画装置1は、1以上の図形を示す入力図形情報と、矩形とを用いて、当該1以上の各図形に近似する1以上の図形を示す近似図形情報を作成する。そして、電子ビーム描画装置1は、当該近似図形情報が示す1以上の図形を描画する。
(1)図形の幅が図形分類条件Aを満たす場合は、図形分類条件Bは満たされない。
(2)図形の幅が図形分類条件Bを満たす場合は、図形分類条件Aは満たされない。
(1)第一メインパターン:メインパターンに対応する図形のうち、図形のサイズが最大ショットサイズよりも大きい図形のパターン
(2)第二メインパターン:メインパターンに対応する図形のうち、図形のサイズが最大ショットサイズ以下である図形のパターン
(A)ビットマップ画像を作成する方法
(B)ビットマップ画像を作成しない方法
(1)距離マップ作成手段121は、入力図形情報を用いて、当該入力図形情報が示す一の図形を示すビットマップ画像を作成する。
(2)距離マップ作成手段121は、(1)で作成したビットマップ画像を用いて、図形の輪郭線を構成する1以上の各点を示す1以上の座標を取得する。
(3)距離マップ作成手段121は、(2)で取得した1以上の座標を用いて、1以上の各幅形成点を示す1以上の座標集合を取得する。当該座標集合は、通常、2つの座標を有する。
(4)距離マップ作成手段121は、(3)で取得した1以上の座標集合を用いて、当該1以上の各座標集合が有する2つの各座標が示す2つの点の中点を示す1以上の座標を取得する。当該取得した1以上の座標は、中心線を構成する1以上の各点を示す座標である。
(5)距離マップ作成手段121は、(2)で取得した1以上の座標と、(4)で取得した1以上の座標とを用いて、中心線を示す1以上の各座標が示す点から、輪郭線までの距離を算出する。
(1)距離マップ作成手段121は、入力図形情報を用いて、図形の輪郭線を構成する1以上の各点を示す1以上の座標を取得する。
(2)距離マップ作成手段121は、(1)で取得した輪郭線を示す1以上の座標を用いて、1以上の各幅形成点を示す1以上の座標集合を取得する。当該座標集合は、通常、2つの座標を有する。
(3)距離マップ作成手段121は、(2)で取得した1以上の座標集合を用いて、当該1以上の各座標集合が有する2つの各座標が示す2つの点の中点を示す1以上の座標を取得する。当該取得した1以上の座標は、中心線を構成する1以上の各点を示す座標である。
(4)距離マップ作成手段121は、(1)で取得した1以上の座標と、(3)で取得した1以上の座標とを用いて、中心線を示す1以上の各座標が示す点から、輪郭線までの距離を算出する。
(A)距離マップを用いる方法
(B)距離マップを用いない方法
(1)図形幅取得手段122は、図形の中心線を構成する1以上の各点に対応する輪郭線までの距離を、距離マップから取得する。
(2)図形幅取得手段122は、(1)で取得した1以上の各距離を2倍した1以上の値を取得する。当該取得した値は、図形幅である。
(1)図形幅取得手段122は、入力図形情報から、図形の輪郭線を構成する1以上の各点を示す1以上の座標を取得する。
(2)図形幅取得手段122は、(1)で取得した1以上の座標を用いて、1以上の各幅形成点を示す1以上の座標集合を取得する。当該座標集合は、通常、2つの座標を有する。
(3)図形幅取得手段122は、(2)で取得した1以上の座標集合を用いて、当該1以上の各座標集合が有する2つの各座標が示す2つの点間の距離である1以上の距離を取得する。当該取得した1以上の距離は、図形幅である。
(A)補助パターン
(B)第一メインパターン
(C)第二メインパターン
(ステップS404-1)判断部13は、図形幅が満たす図形分類条件に対応するパターン識別子を、格納部10から取得する。そして、補助パターンを識別するパターン識別子を取得した場合は、ステップS405に進む。また、メインパターンを識別するパターン識別子を取得した場合は、ステップS406に進む。
(ステップS407-1)判断部13は、図形[i]のサイズが最大ショットサイズより大きいか否かを判断する。最大ショットサイズより大きい場合、判断部13は、第一メインパターンを識別するパターン識別子を、格納部10から取得する。また、最大ショットサイズより大きくない場合、判断部13は、第二メインパターンを識別するパターン識別子を、格納部10から取得する。そして、第一メインパターンを識別するパターン識別子を取得した場合は、ステップS408に進む。また、第二メインパターンを識別するパターン識別子を取得した場合は、ステップS409に進む。
次に、電子ビーム描画装置1の動作の具体例について説明する。
本例において、距離マップを用いて図形幅を取得する例について説明する。
本例において、距離マップを用いずに図形幅を取得する例について説明する。
本例において、補助パターンに対応する図形に対応する近似図形の作成の例について説明する。本例において、補助パターンに対応する図形は、図7に示す図形であるものとする。つまり、当該図形は、判断部13により、補助パターンを識別するパターン識別子が取得された図形である。また、このときの図形分類条件は、例えば、以下の条件である。
(図形分類条件)図形幅が200以下であり、かつ、図形幅が一定であること
本例において、第一メインパターンに対応する図形に対応する近似図形の作成の例について説明する。本例において、第一メインパターンに対応する図形は、図15に示す図形であるものとする。つまり、当該図形は、判断部13により、メインパターンを識別するパターン識別子、および第一メインパターンを識別するパターン識別子が取得された図形である。このときの図形分類条件は、例えば、以下の条件である。また、このときの最大ショットサイズは、例えば、以下のサイズである。
(図形分類条件)図形幅が200より大きいこと
(最大ショットサイズ)250×250
本例において、第二メインパターンに対応する図形に対応する近似図形の作成の例について説明する。本例において、第二メインパターンに対応する図形は、図15に示す図形であるものとする。つまり、当該図形は、判断部13により、メインパターンを識別するパターン識別子、および第二メインパターンを識別するパターン識別子が取得された図形である。このときの図形分類条件は、例えば、以下の条件である。また、このときの最大ショットサイズは、例えば、以下のサイズである。
(図形分類条件)図形幅が200より大きいこと
(最大ショットサイズ)250×250
本実施の形態において、矩形を用いて1以上の各図形に近似する1以上の図形を示す近似図形情報を作成する描画用図形データ作成装置2について説明する。
2 描画用図形データ作成装置
10 格納部
11 受付部
12 図形幅取得部
13 判断部
14 作成部
15 描画部
121 距離マップ作成手段
122 図形幅取得手段
141 中心線取得手段
142 近似輪郭線取得手段
143 作成手段
Claims (12)
- 1以上の図形を示す情報である入力図形情報を受け付ける受付部と、
前記入力図形情報が示す1以上の各図形の幅を取得する図形幅取得部と、
前記図形の幅に適合する1以上の矩形から構成される図形であり、前記入力図形情報が示す1以上の各図形に近似する図形である1以上の近似図形を示す近似図形情報を作成する作成部と、
前記作成部が作成した近似図形情報が示す1以上の近似図形を描画する描画部とを備える電子ビーム描画装置。 - 図形の幅に関する条件である図形分類条件と、図形の幅に基づく予め決められたパターンを識別するパターン識別子とが対応付いた情報である2以上のパターン管理情報が格納される格納部と、
前記図形の幅が満たす図形分類条件に対応するパターン識別子を取得する判断部とをさらに備え、
前記作成部は、
前記判断部が取得したパターン識別子に応じて、異なる方法により、前記1以上の各図形に近似する1以上の近似図形を示す近似図形情報を作成する請求項1記載の電子ビーム描画装置。 - 前記格納部には、
図形の幅が前記図形分類条件を満たすほど小さい図形のパターンである補助パターンを識別するパターン識別子を有するパターン管理情報と、図形の幅が前記図形分類条件を満たすほど大きい図形のパターンであるメインパターンを識別するパターン識別子を有するパターン管理情報とが格納される請求項2記載の電子ビーム描画装置。 - 前記作成部は、
前記1以上の各図形の中心線を取得する中心線取得手段と、
前記中心線に沿って、前記図形の幅に適合する1以上の矩形を配置することにより、前記補助パターンに対応する1以上の各図形に近似する1以上の近似図形を示す近似図形情報を作成する作成手段とを備える請求項3記載の電子ビーム描画装置。 - 前記格納部には、
最大ショットサイズと、図形のサイズが最大ショットサイズより大きい図形のパターンである第一メインパターンを識別するパターン識別子と、図形のサイズが最大ショットサイズ以下である図形のパターンである第二メインパターンを識別するパターン識別子とがさらに格納されており、
前記判断部は、
前記メインパターンに対応する1以上の各図形のサイズが最大ショットサイズより大きいか否かを判断し、最大ショットサイズより大きい場合は、前記第一メインパターンを識別するパターン識別子を取得し、最大ショットサイズ以下である場合は、前記第二メインパターンを識別する識別子を取得する請求項3記載の電子ビーム描画装置。 - 前記作成部は、
前記第一メインパターンに対応する図形の輪郭線であり、水平の直線および垂直の直線および予め決められた角度の直線から構成される輪郭線である近似輪郭線を取得する近似輪郭線取得手段と、
前記近似輪郭線が示す図形の形状に適合する1以上の矩形を配置することにより、前記第一メインパターンに対応する1以上の各図形に近似する1以上の近似図形を示す近似図形情報を作成する作成手段とを備える請求項5記載の電子ビーム描画装置。 - 前記作成部は、
前記第二メインパターンに対応する図形の輪郭線であり、水平の直線および垂直の直線および予め決められた角度の直線から構成される輪郭線である近似輪郭線を取得する近似輪郭線取得手段と、
前記近似輪郭線が示す図形を、前記近似輪郭線に沿って2以上の矩形に分割することにより、第二メインパターンに対応する1以上の各図形に近似する1以上の近似図形を示す近似図形情報を作成する作成手段とを備える請求項5記載の電子ビーム描画装置。 - 前記入力図形情報は、1以上の各図形の輪郭線を示す1以上の座標を有する情報であり、
前記図形幅取得部は、
前記入力図形情報が示す1以上の各図形の中心線を取得し、当該中心線を構成する1以上の各点から、当該1以上の各図形の輪郭線までの距離を示す距離マップを作成する距離マップ作成手段と、
前記距離マップを用いて、前記1以上の各図形の幅を取得する図形幅取得手段とを備える請求項1記載の電子ビーム描画装置。 - 前記作成手段は、
前記中心線に沿って、前記図形の幅に適合する1以上の矩形を、当該矩形同士が重ならないように配置することにより、前記補助パターンに対応する1以上の各図形に近似する1以上の近似図形を示す近似図形情報を作成する請求項4記載の電子ビーム描画装置。 - 前記作成手段は、
前記中心線に沿って、前記図形の幅に適合する1以上の矩形を、当該矩形同士が重なるように配置することにより、前記補助パターンに対応する1以上の各図形に近似する1以上の近似図形を示す近似図形情報を作成する請求項4記載の電子ビーム描画装置。 - 受付部と、図形幅取得部と、作成部と、描画部とを用いて行われる電子ビーム描画方法であって、
前記受付部が、
1以上の図形を示す情報である入力図形情報を受け付ける受付ステップと、
前記図形幅取得部が、
前記入力図形情報が示す1以上の各図形の幅を取得する図形幅取得ステップと、
前記作成部が、
前記図形の幅に適合する1以上の矩形から構成される図形であり、前記入力図形情報が示す1以上の各図形に近似する図形である1以上の近似図形を示す近似図形情報を作成する作成ステップと、
前記描画部が、
前記作成部が作成した近似図形情報が示す1以上の近似図形を描画する描画ステップとを備える電子ビーム描画方法。 - コンピュータを、
1以上の図形を示す情報である入力図形情報を受け付ける受付部と、
前記入力図形情報が示す1以上の各図形の幅を取得する図形幅取得部と、
前記図形の幅に適合する1以上の矩形から構成される図形であり、前記入力図形情報が示す1以上の各図形に近似する図形である1以上の近似図形を示す近似図形情報を作成する作成部と、
前記作成部が作成した近似図形情報が示す1以上の近似図形を描画する描画部として機能させるためのプログラムを記録した記録媒体。
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022549809A (ja) * | 2019-09-23 | 2022-11-29 | アプライド マテリアルズ インコーポレイテッド | デジタルリソグラフィデバイス用のデジタルパターンファイルの最適化 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6484491B2 (ja) * | 2015-04-10 | 2019-03-13 | 株式会社ニューフレアテクノロジー | 荷電粒子ビーム描画装置及び荷電粒子ビーム描画方法 |
JP2016225357A (ja) * | 2015-05-27 | 2016-12-28 | 株式会社ニューフレアテクノロジー | マルチ荷電粒子ビーム描画装置及びマルチ荷電粒子ビーム描画方法 |
JP6617463B2 (ja) * | 2015-07-31 | 2019-12-11 | 大日本印刷株式会社 | パターン編集プログラム、パターン編集装置、パターン編集方法 |
JP6604087B2 (ja) * | 2015-08-20 | 2019-11-13 | 大日本印刷株式会社 | パターン編集プログラム、ショットデータ作成プログラム、パターン編集装置、ショットデータ作成装置、パターン編集方法 |
TWI620996B (zh) | 2016-11-30 | 2018-04-11 | 國立臺灣大學 | 電子束微影方法及其系統 |
CN107918933B (zh) * | 2017-11-28 | 2019-01-15 | 江苏中威科技软件系统有限公司 | 版式数据流文件测量的方法、装置以及存储装置 |
JP7552192B2 (ja) * | 2020-09-24 | 2024-09-18 | 株式会社ニューフレアテクノロジー | データ生成方法、荷電粒子ビーム照射装置及びプログラム |
KR20220139736A (ko) | 2021-04-08 | 2022-10-17 | 삼성전자주식회사 | Euv 마스크 제조방법 |
US11783110B2 (en) | 2021-07-30 | 2023-10-10 | D2S, Inc. | Method for reticle enhancement technology of a design pattern to be manufactured on a substrate |
US11693306B2 (en) | 2021-07-30 | 2023-07-04 | D2S, Inc. | Method for reticle enhancement technology of a design pattern to be manufactured on a substrate |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09298145A (ja) * | 1996-05-07 | 1997-11-18 | Mitsubishi Electric Corp | 電子ビーム描画データ作成装置 |
JPH10335469A (ja) * | 1997-06-04 | 1998-12-18 | Sony Corp | パタンデータ表示装置とその方法 |
JP2008096486A (ja) * | 2006-10-06 | 2008-04-24 | Elpida Memory Inc | 照射パターンデータ作成方法、マスク製造方法、及び描画システム |
JP2009058860A (ja) * | 2007-09-03 | 2009-03-19 | Dainippon Printing Co Ltd | 図形パターン分割方法及びその方法を用いた描画装置、フォトマスク |
JP2011071393A (ja) * | 2009-09-28 | 2011-04-07 | Toppan Printing Co Ltd | 露光パターン生成方法 |
JP2012501476A (ja) | 2008-09-01 | 2012-01-19 | ディー・ツー・エス・インコーポレイテッド | 2次元ドーズマップおよび荷電粒子ビームリソグラフィを用いたレチクルの設計および製造のための方法 |
JP2013050348A (ja) | 2011-08-30 | 2013-03-14 | Seiko Epson Corp | 衛星信号受信装置および電子機器 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02210814A (ja) * | 1989-02-10 | 1990-08-22 | Fujitsu Ltd | 半導体装置の製造方法 |
JP2880284B2 (ja) * | 1990-11-30 | 1999-04-05 | 株式会社日立製作所 | 電子ビーム描画法および装置 |
JPH06140311A (ja) * | 1992-10-28 | 1994-05-20 | Nippon Telegr & Teleph Corp <Ntt> | 電子ビーム描画方法 |
JP3159810B2 (ja) * | 1992-11-30 | 2001-04-23 | 株式会社日立製作所 | 電子線描画方法及びその装置 |
JP2910714B2 (ja) * | 1996-12-26 | 1999-06-23 | 日本電気株式会社 | 電子線描画方法 |
US6415432B1 (en) * | 1999-04-21 | 2002-07-02 | Matsushita Electric Industrial Co., Ltd. | Lithography pattern data generation method, lithography pattern fabrication method and charged particle lithography system |
US6396492B1 (en) * | 1999-08-06 | 2002-05-28 | Mitsubishi Electric Research Laboratories, Inc | Detail-directed hierarchical distance fields |
JP2002260982A (ja) * | 2001-02-28 | 2002-09-13 | Jeol Ltd | 可変面積型電子ビーム描画装置を用いた描画方法 |
JP2002353102A (ja) * | 2001-05-23 | 2002-12-06 | Hitachi Ltd | 半導体装置の製造方法 |
TWI275129B (en) * | 2001-06-22 | 2007-03-01 | Taiwan Semiconductor Mfg | Method to improve the line-width uniformity and figure fidelity of OPC mask by adding an assistant gap on the mask |
JP4006216B2 (ja) * | 2001-10-26 | 2007-11-14 | 日本電子株式会社 | 可変面積型電子ビーム描画装置を用いた描画方法 |
US20090027396A1 (en) * | 2007-07-26 | 2009-01-29 | Tufts University | Method for fitting a parametric representation to a set of objects |
TWI496182B (zh) | 2009-08-26 | 2015-08-11 | D2S Inc | 以可變束模糊技術使用帶電粒子束微影術製造表面之方法及系統 |
US8703389B2 (en) | 2011-06-25 | 2014-04-22 | D2S, Inc. | Method and system for forming patterns with charged particle beam lithography |
US8745549B2 (en) * | 2012-02-05 | 2014-06-03 | D2S, Inc. | Method and system for forming high precision patterns using charged particle beam lithography |
WO2013158574A1 (en) * | 2012-04-18 | 2013-10-24 | D2S, Inc. | Method and system for critical dimension uniformity using charged particle beam lithography |
US8984451B2 (en) * | 2013-02-22 | 2015-03-17 | Aselta Nanographics | Free form fracturing method for electronic or optical lithography |
-
2013
- 2013-04-11 JP JP2013083377A patent/JP6169876B2/ja active Active
- 2013-12-06 US US14/406,641 patent/US9430607B2/en active Active
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- 2013-12-06 EP EP13881981.8A patent/EP2876667B1/en active Active
-
2014
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09298145A (ja) * | 1996-05-07 | 1997-11-18 | Mitsubishi Electric Corp | 電子ビーム描画データ作成装置 |
JPH10335469A (ja) * | 1997-06-04 | 1998-12-18 | Sony Corp | パタンデータ表示装置とその方法 |
JP2008096486A (ja) * | 2006-10-06 | 2008-04-24 | Elpida Memory Inc | 照射パターンデータ作成方法、マスク製造方法、及び描画システム |
JP2009058860A (ja) * | 2007-09-03 | 2009-03-19 | Dainippon Printing Co Ltd | 図形パターン分割方法及びその方法を用いた描画装置、フォトマスク |
JP2012501476A (ja) | 2008-09-01 | 2012-01-19 | ディー・ツー・エス・インコーポレイテッド | 2次元ドーズマップおよび荷電粒子ビームリソグラフィを用いたレチクルの設計および製造のための方法 |
JP2011071393A (ja) * | 2009-09-28 | 2011-04-07 | Toppan Printing Co Ltd | 露光パターン生成方法 |
JP2013050348A (ja) | 2011-08-30 | 2013-03-14 | Seiko Epson Corp | 衛星信号受信装置および電子機器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2876667A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022549809A (ja) * | 2019-09-23 | 2022-11-29 | アプライド マテリアルズ インコーポレイテッド | デジタルリソグラフィデバイス用のデジタルパターンファイルの最適化 |
JP7534391B2 (ja) | 2019-09-23 | 2024-08-14 | アプライド マテリアルズ インコーポレイテッド | デジタルリソグラフィデバイス用のデジタルパターンファイルの最適化 |
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TW201439667A (zh) | 2014-10-16 |
EP2876667A4 (en) | 2016-03-16 |
EP2876667A1 (en) | 2015-05-27 |
EP2876667B1 (en) | 2019-07-31 |
US9430607B2 (en) | 2016-08-30 |
JP2014207299A (ja) | 2014-10-30 |
US20150178439A1 (en) | 2015-06-25 |
TWI613510B (zh) | 2018-02-01 |
JP6169876B2 (ja) | 2017-07-26 |
KR20160012064A (ko) | 2016-02-02 |
KR102065197B1 (ko) | 2020-01-10 |
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