WO2014019238A1 - 一种彩色动态放大安全薄膜 - Google Patents
一种彩色动态放大安全薄膜 Download PDFInfo
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- WO2014019238A1 WO2014019238A1 PCT/CN2012/079687 CN2012079687W WO2014019238A1 WO 2014019238 A1 WO2014019238 A1 WO 2014019238A1 CN 2012079687 W CN2012079687 W CN 2012079687W WO 2014019238 A1 WO2014019238 A1 WO 2014019238A1
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 50
- 239000002184 metal Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000010408 film Substances 0.000 claims description 53
- 239000000758 substrate Substances 0.000 claims description 14
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 239000010409 thin film Substances 0.000 claims description 13
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000007 visual effect Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 101
- 239000003086 colorant Substances 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- 238000001228 spectrum Methods 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 230000010287 polarization Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000002086 nanomaterial Substances 0.000 description 8
- 238000001000 micrograph Methods 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 6
- 239000004926 polymethyl methacrylate Substances 0.000 description 6
- 238000007639 printing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 239000012788 optical film Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 238000001093 holography Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- TVYLLZQTGLZFBW-ZBFHGGJFSA-N (R,R)-tramadol Chemical compound COC1=CC=CC([C@]2(O)[C@H](CCCC2)CN(C)C)=C1 TVYLLZQTGLZFBW-ZBFHGGJFSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 238000011536 re-plating Methods 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/324—Reliefs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/342—Moiré effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/284—Interference filters of etalon type comprising a resonant cavity other than a thin solid film, e.g. gas, air, solid plates
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/12—Beam splitting or combining systems operating by refraction only
Definitions
- the invention relates to an optical component, in particular to a security film which can display dynamic enlarged images of different colors, and is applied to public safety fields such as brand safety, card tickets, security documents, printing and packaging materials. Background technique
- micro-optical components based on the Moir's magnification principle are capable of magnifying micron-scale images by hundreds of times to form MM-recognizable images, and at the same time, the rendered images can have dynamic effects as the viewing angle changes, especially in finance.
- the focus of the field is achieved by using the Moir's magnification principle.
- US 2008/0037131 A1 proposes to apply a micro-convex lens array and a micro-pattern array to a security device, wherein the micro-pattern array is obtained by gravure printing with a minimum resolution of 5 micrometers, and the main production method is on a flexible film such as PET.
- the photoresist is coated, and a groove having a depth of several micrometers is imprinted on the surface of the photoresist by a relief with a microtext, and the ink is filled into the groove by a doctor blade method, so that the microtext displays the corresponding color.
- the color of the image is obtained by filling the color ink in the groove, and the micro-text is single color, and cannot form a color display;
- the micro-image feature size is several micrometers, and the general printing ink particle is A few tens of micrometers, therefore, a special grade of nano-scale ink can be used as a fill color ink; in order to make enough ink to be filled into the groove, to improve the contrast between the micro-text and the background, the groove depth will be greater than 3 microns Therefore, it is necessary to make a large aspect ratio metal embossing template, which is When the surface dynamic image is produced, the process difficulty is improved.
- JetScr e en2000 is an inkjet print head with 256 nozzles, which provides 700dpi resolution. Image output; Autoanda Sri.'s subsidiary Amanda introduces the new thermal inkjet printer DigitAll for 720 x 720dpi resolution image output; in digital screen printing, Scitex's new ultra-wide format Grandj et press The resolution is 370 x 370dpi; Nur's Fresco press can achieve 720dpi resolution.
- Chinese invention patent CN101850680A discloses a security film with dynamic stereoscopic effect, by randomly distributing the central coordinates of each microlens in the microlens array layer within the microlens array layer, microlenses and micrographs in the microlens array layer
- the micro-texts in the text layer are set one by one. It is pointed out that each micro-text can be composed of micro-nanostructures and directly fabricated by UV imprinting on organic thin film materials.
- the object of the present invention is to provide an optical film capable of realizing a micro-text color dynamic image effect under a color background, and at the same time, providing a structure and implementation method of a variable color dynamic optical film, increasing the optical effect of image recognition, and improving the threshold of anti-counterfeiting technology. .
- a color dynamic amplification security film comprising a microlens array layer, a substrate layer and a microtext layer, wherein the microtext layer is composed of a background area and a graphic area
- the image layer is distributed in the background area
- the micro-text layer is a semi-transparent and semi-transverse metal layer, a dielectric layer and a metal thin film layer from the top to the bottom, and the metal thin film layer is a planar structure.
- the thickness of the dielectric layer in the image area is greater than the thickness of the dielectric layer in the background area, and the thickness of the transflective metal layer is uniform, and the upper surface of the dielectric layer is contoured and embedded under the substrate layer.
- the semipermeable metal layer, the dielectric layer and the metal thin film layer constitute a microcavity interference structure.
- the above technical solution is composed of a microlens array portion and a microcavity interference structure which are in accordance with the Moir amplification condition, and the color microtext on the background color is obtained by the microcavity interference structure, and is amplified by the microlens array.
- the micro-images and microlens arrays are arranged in a condition that is in accordance with the moiré magnification, and an image magnified hundreds of times can be obtained, and dynamic effects such as "upward floating", “sinking", “deformation”, and “homomorphic vision” can be realized. Since the pupil is generated by the microcavity interference structure, there is a high contrast between the dynamic pattern and the pattern background.
- the thickness of the metal thin film layer is greater than 20 nm, and the thickness of the transflective metal layer is less than 100 nm.
- the upper surface of the dielectric layer in the image area is provided with a grating structure, and a portion of the grating structure is disposed to form a micro-nano grating structure, so that the dynamic light of the image changes.
- each of the microlens units has one or more microtext units in corresponding regions of the microtext layer.
- micro-image units corresponding to the adjacent microlens units respectively adopt a microcavity interference structure or a nano grating structure
- microcavity interference structure corresponding to the micro-image unit corresponding to the adjacent microlens unit has different cavity thicknesses or different parameters of the nano-grating structure used
- the plurality of micro-image units corresponding to the microlens unit respectively adopt a microcavity interference structure or a nano grating structure
- microcavity interference structures used in the corresponding plurality of micro-image units in the microlens unit have different cavity thicknesses or different parameters of the nano-grating structure.
- the micro-cavity interference structure is used to form micro-images or characters by nano-imprinting and evaporation methods, and the micro-cavity colorization is realized by the thickness variation of the micro-cavity interference structure, and the micro-cavities of different thicknesses can be fabricated on the enamel layer by the same method.
- the interference structure which realizes a different color display method from the microtext image, may be prepared by using a micro-nano imprinting die to press a pit structure corresponding to the shape of the upper surface of the substrate on the lower surface of the substrate layer, and then evaporating a layer Semi-transparent metal film, re-plating medium The layer is filled with pits and plated to the desired thickness, and finally the metal film layer is evaporated.
- a protective layer may be further plated on the surface of the metal film layer as needed.
- the security film obtained by the above technical solution has the following visual recognition features: (1) the dynamic image and the image background have different colors; (2) the dynamic image has different colors in different regions (by the microcavity interference structure (3) The dynamic image background has different colors in different regions (determined by the thickness of the microcavity interference structure); (4) The dynamic image background can be a static color or monochrome image; (5) Through the nanostructure Design, dynamic image background color or image has photochromic features, showing different colors in different angle ranges; (6) Through the design of nanostructures, dynamic image background color or image has multi-channel features, showing different colors in different viewing planes . (7) Through the design of nanostructures, the dynamic image background color or image has polarization selectivity and displays different colors under different polarizations; (8) Through the design of nanostructures, micro color effects can be observed in the same lens unit. Graphic.
- red (R), green (G), and blue (B) colors are obtained by changing the dielectric layer thickness or the dielectric grating groove depth or the grating structure parameters.
- the three-pixel pixels are combined to form three color pixels of R, G, and B, and the background layer provides contrast color or transparent colorless, and the dynamic image magnified by the microlens array has a color changing effect.
- the combination includes, but is not limited to, three units, the color including but not limited to 13 ⁇ 4, G, B, the nanostructures include, but are not limited to, microcavity interference structures, and the color block or pattern structure scheme is In addition to changing the grating structure parameters to change the color output, the change in the polarization state of the incident light, the change in the grating orientation or the viewing plane, or the color display in the range of different incident angles is also different.
- the above layers may be combined to form a dynamic magnifying optical film of different color variations.
- the present invention has the following advantages over the prior art:
- the microtext layer of the present invention comprises a microcavity interference structure by at least three layers of structures, and the color of the microtext can be flexibly realized by changing the thickness of the cavity (dielectric layer) or by changing the structural parameters of the micro-nano grating pass.
- the precision of the microstructure made by imprinting has reached the nanometer level, and the micro-texture of 1 -2 ⁇ precision can be realized; the imprinting method can also be utilized as an effective means for large-scale rapid production.
- the invention realizes color output of micro-text based on microcavity interference structure or micro-nano grating, It can meet the Moir amplification condition under the microlens array, and can realize the dynamic dynamic magnification output of the micro-text in the color background; it also meets the needs of rapid production; the color change, the homomorphic image, etc. can be obtained through the design and change of the structure.
- the optical effect, the visual recognition feature is significantly improved compared with the existing monochrome security element, and its anti-counterfeiting performance is enhanced.
- the background color microcavity interference structure can be synchronously completed, simplifying Process flow; More importantly, the technical thresholds related to nanostructure manufacturing, thin film interference, etc., have also been significantly improved, providing an important color optical viewing solution for optical security thin film devices.
- Embodiment 1 is a schematic structural view of Embodiment 1;
- Figure 2 is a partial cross-sectional view of the first embodiment
- FIG. 3 is a schematic view showing a microcavity interference structure in the first embodiment
- Figure 5 is a three-color reflection spectrum at 60 ° in the first embodiment
- FIG. 6 to FIG. 10 are schematic diagrams showing states of each step in the embossing process of the first embodiment
- Figure 11 is a schematic view of the second embodiment
- Figure 12 is a cross-sectional view of the second embodiment
- Figure 13 is a four cavity thickness reflection spectrum in the second embodiment
- Figure 14 is a schematic view of the third embodiment
- Figure 15 is a schematic view of the fourth embodiment
- Figure 16 is a cross-sectional view of the fourth embodiment
- Figure 17 is a schematic view showing the structure of a micro-nano grating
- Figure 18 is a schematic view of the fifth embodiment
- Figure 19 is a cross-sectional view of the fifth embodiment
- Figure 20 is a reflection spectrum of a micro-nano grating under TM polarization at different viewing angles
- Figure 21 is a reflection spectrum of micro-nano gratings in different viewing planes under TM polarization
- Figure 22 is a reflection spectrum of a micro-nano grating under TE polarization at different viewing angles
- Figure 23 is a reflection spectrum of micro-nano gratings in different viewing planes under TE polarization
- Figure 24 is a reflection spectrum of the microcavity interference structure at different viewing angles. detailed description
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- FIG. 2 is a cross-sectional view of the micro-text pixel of the embodiment.
- 220 is the lower surface of the substrate
- 221 is the horizontal plane where the micro-text B exists
- 222 is the horizontal plane where the micro-text A exists
- 223 is half.
- a nickel thin film is used
- 230 is a dielectric material filling layer having a refractive index of 1.5
- 231 is a highly reflective metal thin film layer.
- a metal aluminum film layer is used.
- the microcavity interference structure that constitutes the color microtext layer and the color background layer is as shown in FIG.
- 231 is a metal A1 film
- 230 is a medium having a refractive index of 1.5
- 223 is a metal Ni film
- the color output of R, G, and B colors is realized by changing the thickness of the microcavity 230.
- FIG. 2 when the thickness of 230 is 210 nm, the reflected light is red; when the thickness of 230 is 165 nm, the reflected light is green; when the thickness of 230 is 130 nm, the reflected light is blue, and the three-color reflection spectrum is attached.
- Figure 4 shows.
- the reflected light appears yellow; when the thickness of 230 is 165 nm, the reflected light appears blue; when the thickness of 230 is 130 nm, the reflected light appears purple, as shown in FIG. .
- the microcavity interference structure can be adjusted by the mold step of the imprint micropattern, so that the different micropatterns of the imprint obtain different microcavity thicknesses, as shown in Fig. 6 to Fig. 10.
- the imprinting die 50 has steps 501 and 502 of different heights, and two groove depths are imprinted on the lower surface 220 of the substrate 21.
- the grooves 511 and 512 are 45 nm and 90, respectively. Nm, then as shown in Fig. 8, a 10 nm thick nickel film 52 is deposited, and the plating medium is filled with pits and then plated with a 130 nm thick dielectric layer 530, as shown in Fig.
- microcavity interference structure forming the background color can be obtained while fabricating the microcavity interference structure constituting the micrograph layer.
- the microtext A in the micrograph layer consists of a 10 nm nickel film, a 210 nm thick dielectric cavity, and a 20 nm thick layer.
- the aluminum layer consists of a 10 nm nickel film, a 165 nm thick dielectric cavity, and a 20 nm thick aluminum layer.
- the background layer consists of a 10 nm nickel film, a 130 nm thick dielectric cavity, and a 20 nm thick aluminum layer.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- the color filter microcavity interference structures of the three colors of R, G, and B are imprinted on the corresponding microtexture regions of the microlens array, as shown in FIG. 11: 20.
- FIG. 12 is a cross-sectional view of the embodiment.
- 220 is the lower surface of the substrate
- 621 is the horizontal plane where the micro-text A exists
- 622 is the horizontal plane where the micro-text B exists
- 623 is the micro-text C.
- 223 is a semi-transflective metal layer
- 230 is a dielectric material filling layer having a refractive index of 1.49
- 231 is a total reflection metal layer.
- the dielectric material filling layer is PMMA having a refractive index of 1.49
- the transflective metal layer is a metal Cr film
- the corresponding microcavity interference structure is fabricated in a similar manner to the process shown in Figures 6 to 10.
- the imprinting die imprints three groove depths of 196 nm, 156 nm and 116 nm on the substrate, and then evaporates a layer of 6 nm.
- a thick Cr film, after filling with PMMA medium, is vapor-deposited with a 30 nm thick aluminum film and finally coated with a protective layer as needed.
- the micro-text A in the micro-text layer is composed of a microcavity interference structure composed of a 6 nm thick Cr film, a 210 nm thick PMMA and a 30 nm thick aluminum film.
- the microtext B consists of a 6 nm thick Cr film, a 170 nm thick PMMA and 30 Micro-cavity interference structure composed of nm thick aluminum film
- micro-text C consists of micro-cavity interference structure composed of 6 nm thick Cr film, 130 nm thick PMMA and 30 nm thick aluminum film.
- the background layer consists of 6 nm thick Cr film, 20
- the composition of the microcavity interference structure composed of nm thick PMMA and 30 nm thick aluminum film, so that the dynamic enlargement pattern of the micrograph layer is red under the white background A, green B and blue C color text array.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- micrograph layer On the micrograph layer, an imprinting technique is used to obtain a micrograph layer composed of a cavity-cavity microcavity interference structure. After the semi-transparent metal film is plated, the plated dielectric layer fills the embossed groove deeply and then The fully reflective metal film layer is plated to obtain a monochromatic micro-text layer and a background layer, and the color of the micro-text layer is different from the color of the background layer. As shown in FIG.
- a micro-text 821 of a certain depth is imprinted on the lower surface of the substrate, a semi-transflective metal layer 822 is plated, and a dielectric thin film layer 830 is plated, and then a total reflection metal film layer 831 is evaporated, and then It is necessary to cover a layer of media as a protective layer.
- both the micro-text layer and the background layer are displayed as a single color, and the colors of the two are different, and different color displays can be selected according to requirements, for example, the micro-text dynamic enlargement pattern has a shorter color wavelength (bluish), the background The color has a longer wavelength (reddish), which makes the color of the dynamically magnified graphic different from the background color, and presents a blue display on a red background.
- Embodiment 4 By placing different micro-patterns on the left and right sides of the central axis of the microlens, different enlarged patterns can be observed from different viewing angles; by adjusting the thickness of the micro-cavities of the left and right micro-patterns, the observation is made under different fields of view.
- the magnified graphics have different colors.
- micrographs A and B are placed on the left and right sides of the central axis of the microlens, respectively, and the cross-sectional view is as shown in FIG. 16, in the microtext layer 92.
- the left side 921 of the central axis of the microlens is the horizontal position of the microtext A
- the right side 922 of the central axis of the microlens is the horizontal position of the microtext B
- the 923 is a semitransparent metal film layer, such as a nickel film of 6 nm
- 930 It is a dielectric film layer, such as MgF2
- 931 is a total reflection metal layer, such as a 30 nm thick silver film.
- the micro-text A and the micro-text B are separated from the left and right sides of the central axis of the microlens, and the micro-text A, the micro-text B, and the background layer are composed of microcavity interference structures of different cavity thicknesses, and the three colors respectively exhibit different colors.
- the human eye observes the dynamic magnification of the two micro-texts A and B in the same background color in the same microlens unit above the microlens array, and the displayed micro-text A and micro-text B are different in color. The same vision effect.
- Embodiment 5 is a diagrammatic representation of Embodiment 5:
- the micro-nano grating structure as shown in FIG. 17 is used to simultaneously realize the color display of the micro-text layer and the background layer, wherein 100 is a total reflection metal film, 101 is a medium, 102 is a dielectric grating, 103 is The transflective film, the distance between the corresponding positions of adjacent ridges in 102 is the grating period.
- the color output of the three colors of R, G, and B is achieved by changing the thickness of the microcavities 101 and 102.
- the micro-text color dynamic display with background color is realized.
- the scheme is shown in Fig. 18.
- the cross-sectional view is shown in Fig. 19, where 1120 is the lower surface of the substrate, and the surface of the substrate is micro.
- the embossing groove of the corresponding area of the lens is as deep as 1122.
- the groove has a width width of ⁇ 5 ⁇ m and a depth of 65 nm.
- the dielectric grating structure of the dielectric grating structure 1121 with a depth of 240 nm and a depth of 240 nm is printed on the 1122, and then sequentially plated with 10 nm.
- the micro-text A is composed of a 10 nm transflective metal layer, a 230 nm dielectric grating layer, a 230 nm dielectric layer and a 20 nm total reflection metal film.
- the reflection spectrum under TM polarization is shown in Fig. 20, When observed within 40°, the micro-text A appears red; when viewed at an angle of ⁇ 60°, the micro-text A has no obvious color characteristics.
- ⁇ 0° in Fig.
- the reflectance spectrum under the TE polarization is shown in Fig. 22.
- the reflectance in the visible light region changes little, and there is no obvious color characteristic.
- the corresponding background is a microcavity interference structure composed of a 10 nm transflective metal layer, a 165 nm dielectric layer and a 20 nm total reflection metal thin film layer.
- the reflection spectrum is shown in Fig. 24, as the incident angle increases. The color shifts from green to blue. When viewed vertically, the background appears green; when viewed at 40°, the background appears blue-green; when viewed at 60°, the background appears blue.
- the two are combined, and the red text A in the green background is displayed under vertical observation; the red text A in the blue-green background is displayed under the observation angle of 40°; the black text A in the blue background is displayed under the observation angle of 60° .
- the red text A in the blue-green background was observed under TM polarized light illumination
- the white character A in the blue-green background was observed under TE polarized light illumination, showing significant polarization splitting characteristics.
- the TM polarized light exhibits a red micro-text A in a blue-green background at an observation angle of 40°
- the TM polarized light has a blue-green background at an observation angle of 40°.
- the white micro-text A in the display shows significant dual-channel characteristics.
- the micro-text can be a combination of various forms of text, image or text image; in the above embodiments, the color change features can be freely combined to realize color modulation of the dynamic micro-text with background color.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/419,151 US9372287B2 (en) | 2012-08-03 | 2012-08-03 | Colored, dynamic, and amplified safety film |
CN201280075075.5A CN104981356B (zh) | 2012-08-03 | 2012-08-03 | 一种彩色动态放大安全薄膜 |
PCT/CN2012/079687 WO2014019238A1 (zh) | 2012-08-03 | 2012-08-03 | 一种彩色动态放大安全薄膜 |
KR1020157005268A KR101960402B1 (ko) | 2012-08-03 | 2012-08-03 | 컬러 다이나믹 증폭 보안 필름 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/CN2012/079687 WO2014019238A1 (zh) | 2012-08-03 | 2012-08-03 | 一种彩色动态放大安全薄膜 |
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WO2014019238A1 true WO2014019238A1 (zh) | 2014-02-06 |
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PCT/CN2012/079687 WO2014019238A1 (zh) | 2012-08-03 | 2012-08-03 | 一种彩色动态放大安全薄膜 |
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Country | Link |
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US (1) | US9372287B2 (zh) |
KR (1) | KR101960402B1 (zh) |
CN (1) | CN104981356B (zh) |
WO (1) | WO2014019238A1 (zh) |
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KR20150038496A (ko) | 2015-04-08 |
CN104981356A (zh) | 2015-10-14 |
CN104981356B (zh) | 2017-04-12 |
KR101960402B1 (ko) | 2019-03-20 |
US20150198749A1 (en) | 2015-07-16 |
US9372287B2 (en) | 2016-06-21 |
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