EP0423680A2
Expired / Lapsed
EP
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Method of manufacturing display having diffraction grating patterns
Assignee: Toppan Inc
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Filing: 1990-10-15
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Granted: —
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Expires: 2010-10-15
Abstract
Abstract A method of manufacturing a display having diffraction grating patterns, comprises the steps of (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer, (b) selecting nth image data from the plurality of image data, (c) inputting data of a reproducing light source position and a view direction, (d) inputting predetermined dot data of the nth image data, (e) determining a pitch and a direction of a grating and an area of a dot on the basis of the data of the reproducing light source position and the view direction and the dot data, (f) moving an X-Y stage to a predetermined position on the basis of the dot data and delineating the diffraction grating by using an electron scanning unit, (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed, and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Inventors
- 👤 Susumu Takahashi
- 👤 Toshiki Toda
- 👤 Fujio Iwata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:45
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/26; G03H1/30; G02; G02B; G02B5/00; G02B5/18; G02B5/32; G03H1/04; G03H1/0476; G03H2001/0482; G03H1/0493; G03H2001/0497; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
A method of manufacturing a display having diffraction grating patterns, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch and a direction of a diffraction grating and an area of a dot on the basis of the data of the reproducing light source position and the view direction and the dot data,. (f) moving an X-Y stage to a predetermined position on the basis of the dot data and delineating the grating by using an electron scanning unit; (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Claim 2
Independent Claim
185 words
A method of manufacturing a display having diffraction grating patterns, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch and a direction of a diffraction grating and an area of a dot on the basis of the data of the reproducing light source position and the view direction and the dot data,. (f) moving an X-Y stage to a predetermined position on the basis of the dot data and delineating the grating by using an electron scanning unit; (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Claim 3
Dependent Claim
62 words
A method according to claim 1, characterized in that a direction Ω and pitch d of the diffraction grating are obtained according to the following equations: tan(Ω) = sin(α)/sin(ϑ) d = λ/√ sin²(ϑ) - sin²(α) where ϑ is the incidence angle of illumination light, α is the direction of 1st-order diffracted light, and λ is the wavelength of the 1st-order diffracted light.
Claim 4
Independent Claim
189 words
A method of manufacturing a display having diffraction grating patterns by using a two-beam interference method, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch and a direction of a diffraction grating and an exposure time on the basis of the data of the reproducing light source position and the view direction and the dot data; (f) moving an X-Y-ϑ stage to a predetermined position on the basis of the dot data and forming the grating by using the two-beam interference method; (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Claim 5
Independent Claim
189 words
A method of manufacturing a display having diffraction grating patterns by using a two-beam interference method, comprising the steps of: (a) obtaining a plurality of two-dimensional images by observing an object at a plurality of positions, and inputting images of the plurality of two-dimensional images to a computer; (b) selecting nth image data from the plurality of image data; (c) inputting data of a reproducing light source position and a view direction; (d) inputting predetermined dot data of the nth image data; (e) determining a pitch and a direction of a diffraction grating and an exposure time on the basis of the data of the reproducing light source position and the view direction and the dot data; (f) moving an X-Y-ϑ stage to a predetermined position on the basis of the dot data and forming the grating by using the two-beam interference method; (g) sequentially incrementing an address of the dot data and repeating the steps (d) to (f) until all data corresponding to the nth image data are processed; and (h) selecting another image data, and repeating the steps (b) to (g) until all image data are processed.
Claim 6
Dependent Claim
53 words
A method according to claim 3, characterized in that a direction Ω of the diffraction grating is obtained according to the following equations: tan(Ω) = sin(α)/sin(ϑ) where ϑ is the incidence angle of illumination light, α is the direction of 1st-order diffracted light, and λ is the wavelength of the 1st-order diffracted light.
References Cited (Backward Citations)
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