US3354806A - Arrangement by means of which a member displaceable in a flat plane may repeatedly be adjusted in a reproducible manner to a plurality of points with pre-determined pairs of co-ordinates - Google Patents

Arrangement by means of which a member displaceable in a flat plane may repeatedly be adjusted in a reproducible manner to a plurality of points with pre-determined pairs of co-ordinates Download PDF

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Publication number
US3354806A
US3354806A US414095A US41409564A US3354806A US 3354806 A US3354806 A US 3354806A US 414095 A US414095 A US 414095A US 41409564 A US41409564 A US 41409564A US 3354806 A US3354806 A US 3354806A
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US
United States
Prior art keywords
points
adjusted
flat plane
arrangement
reproducible manner
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US414095A
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English (en)
Inventor
Lang Hendrik De
Brouwer Gerrit Pieter
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US Philips Corp
North American Philips Co Inc
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US Philips Corp
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Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
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Publication of US3354806A publication Critical patent/US3354806A/en
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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
    • G03F9/00—Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically
    • G03F9/70—Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically for microlithography
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device

Definitions

  • ABSTRACT OF THE DISCLOSURE A device for the manufacture of masks for integrated circuits including an arrangement for high precision adjustment of a member displaceable in a flat plane in a reproducible manner to a plurality of points with predetermined pairs of coordinates.
  • the invention relates to an arrangement by means of which a member displaceable in a flat plane may repeatedly be adjusted in a reproducible manner to a plurality of points with predetermined pairs of co-ordinates.
  • Such an arrangement is used inter alia for the manufacture of masks consisting of a great plurality of images arranged according to a given pattern in a flat plane.
  • These masks are manufactured in that a photographic plate is placed on a so-called cross slide, that is to say, a slide which is displaceable in two co-ordinate directions at right angles to one another, whereupon in a number of accurately determinable positions of the slide an image is projected through a miscroscope objective onto the photographic plate. It is thus possible to record a quadratic pattern of, for example, 80 x 80 identical images on the photographic plate.
  • the invention provides an arrangement by means of which in the manufacture of such masks the cross slide may always be adjusted to the correct position with the required accuracy.
  • the invention consists in that in an arrangement as described in the preamble, a reference mark is associated with each point and coincides at least substantially with this point, while means are provided which indicate the deviation from the correct position, two quantities corresponding to the coordinate directions being obtained by means of which the co-ordinates are adjusted to the correct values.
  • the member may be constituted by a plate adjustable in two co-ordinate directions at right angles to one another, to which plate for example, a photographic plate is secured and which in the aforesaid case comprises 80 rows each having 80 reference points.
  • This reference plate is driven in the said directions by driving motors to which when the plate is approximately adjusted to a predetermined position voltages are applied which are derived from a photo-electric device co-operating with the associated reference point in a manner such that with any deviation in one of the co-ordinate directions a motor causes a movement of the plate such that the deviation is eliminated.
  • any deviation in the co-ordinate values which may arise as a result of clearance in thestraight line guidings is neutralized.
  • Each reference mark preferably consists of two gratings having lines at right angles to each other, while optical-electrical means are provided with the aid of which control voltages are derived which are dependent upon the positions of the gratings and which each serve for the displacement of the member in one co-ordinate direction.
  • the first grating gives rise to a voltage resulting in a displacement at right angles to the lines of the grating, for example in the X-direction; in the same manner, the other grating gives rise to a voltage resulting in a displacement in the Y-direction.
  • the voltages indicating the deviation may be obtained with the use of a reflection grating in a known manner by scanning this grating photo-electrically by optical means. With a grating constant of microns, an accuracy of 1,1. is readily obtainable. This only requires that the position is previously adjusted within a given range of, for example, 12 microns.
  • reference numeral 1 denotes a plate bearing a pattern which is projected through a microscope objective 2 on a photographic plate 4 at an area 3 so that an image may be produced photographically.
  • the photographic plate 4 is provided on a reference plate 5 which may be driven by means of motors 9 and 10 in the two co-ordinate directions in the plane of the plates.
  • the plate 4 is to be provided with a plurality of rows ,of images 3 which are projected on this plate in order of succession.
  • the pattern which is projected may have to be replaced by another pattern which must be projected with a great accuracy on the same areas as the former image.
  • each position is associated with a reference mark 6, 7 consisting of gratings the lines of which are at right angles to one another.
  • the reference marks are provided on the lower side of the plate 5 which is made, for example, of metal.
  • the accurate location of each reference mark is observed by means of an optically photo-electric device 8 comprising a pair of photo-electric cells to detect separately reference mark 6 and reference mark 7.
  • an optically photo-electric device 8 comprising a pair of photo-electric cells to detect separately reference mark 6 and reference mark 7.
  • a device for repeatedly adjusting a reference member displaceable in a flat plane and in two directions in a reproducible manner to a plurality of points with predetermined pairs of coordinates comprising a reference mark associated with each point on said reference member and coincides at least substantially with said point, said reference mark being constituted of two gratings, the lines of which are at right angles to each other, a

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Projection-Type Copiers In General (AREA)
  • Control Of Position Or Direction (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
US414095A 1963-12-05 1964-11-27 Arrangement by means of which a member displaceable in a flat plane may repeatedly be adjusted in a reproducible manner to a plurality of points with pre-determined pairs of co-ordinates Expired - Lifetime US3354806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL301413 1963-12-05

Publications (1)

Publication Number Publication Date
US3354806A true US3354806A (en) 1967-11-28

Family

ID=19755272

Family Applications (1)

Application Number Title Priority Date Filing Date
US414095A Expired - Lifetime US3354806A (en) 1963-12-05 1964-11-27 Arrangement by means of which a member displaceable in a flat plane may repeatedly be adjusted in a reproducible manner to a plurality of points with pre-determined pairs of co-ordinates

Country Status (5)

Country Link
US (1) US3354806A (enrdf_load_html_response)
DE (1) DE1235725B (enrdf_load_html_response)
GB (1) GB1095703A (enrdf_load_html_response)
NL (1) NL301413A (enrdf_load_html_response)
SE (1) SE335055B (enrdf_load_html_response)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3541338A (en) * 1967-01-12 1970-11-17 Ibm Positioning system
US3639059A (en) * 1969-02-10 1972-02-01 Matrographics Inc Graphic-processing apparatus
US3903536A (en) * 1973-11-19 1975-09-02 Gerhard Westerberg Device for generating masks for microcircuits
US4346987A (en) * 1980-07-18 1982-08-31 Xerox Corporation Printed circuit board projection imaging system
US4445776A (en) * 1980-09-29 1984-05-01 High resistration photomask machine and computerized numerical control system
US6608666B2 (en) * 2000-06-19 2003-08-19 Canon Kabushiki Kaisha Reference plate, exposure apparatus, device manufacturing system, device manufacturing method, semiconductor manufacturing factory, and exposure apparatus maintenance method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2905636C2 (de) * 1979-02-14 1985-06-20 Censor Patent- Und Versuchs-Anstalt, Vaduz Verfahren zum Kopieren von Masken auf ein Werkstück

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052174A (en) * 1958-06-10 1962-09-04 Victor Bouzard & Ses Fils Soc Automatic control system for offset and the like ihoto-mechanical copying machines
US3273450A (en) * 1962-11-20 1966-09-20 Rank Organisation Ltd Data processing apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052174A (en) * 1958-06-10 1962-09-04 Victor Bouzard & Ses Fils Soc Automatic control system for offset and the like ihoto-mechanical copying machines
US3273450A (en) * 1962-11-20 1966-09-20 Rank Organisation Ltd Data processing apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3541338A (en) * 1967-01-12 1970-11-17 Ibm Positioning system
US3639059A (en) * 1969-02-10 1972-02-01 Matrographics Inc Graphic-processing apparatus
US3903536A (en) * 1973-11-19 1975-09-02 Gerhard Westerberg Device for generating masks for microcircuits
US4346987A (en) * 1980-07-18 1982-08-31 Xerox Corporation Printed circuit board projection imaging system
US4445776A (en) * 1980-09-29 1984-05-01 High resistration photomask machine and computerized numerical control system
US6608666B2 (en) * 2000-06-19 2003-08-19 Canon Kabushiki Kaisha Reference plate, exposure apparatus, device manufacturing system, device manufacturing method, semiconductor manufacturing factory, and exposure apparatus maintenance method

Also Published As

Publication number Publication date
GB1095703A (en) 1967-12-20
DE1235725B (de) 1967-03-02
NL301413A (enrdf_load_html_response)
SE335055B (enrdf_load_html_response) 1971-05-10

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