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Multilayer color dynamic display anti-counterfeiting film and preparation method thereof

A technology of dynamic display and film, applied in the field of anti-counterfeiting, can solve the problem of low resolution of dynamic graphics, and achieve the effect of good graphics resolution and obvious display.

Pending Publication Date: 2020-03-06
四川芯辰光微纳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the resolution of the dynamic graphics produced by this technology is not high, and the color of the background is similar, the ideal graphics can only be clearly seen through the observation of transmitted light

Method used

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  • Multilayer color dynamic display anti-counterfeiting film and preparation method thereof
  • Multilayer color dynamic display anti-counterfeiting film and preparation method thereof
  • Multilayer color dynamic display anti-counterfeiting film and preparation method thereof

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Embodiment 1

[0036] In this embodiment, the color dynamic display film such as figure 1 As shown, it consists of a microlens array layer, a transparent medium layer I, a transparent medium layer II and a micrographics array metal layer from top to bottom. Among them, the microlens array is arranged in a quadrilateral manner, the period is 50 μm, and the focal length of the lens is 150 μm, such as figure 2 ; The transparent medium layer I uses PET film with a refractive index of 1.61 and a thickness of 150 μm; the transparent medium layer II is TiO with a refractive index of 2.30 2 Thin film layer with a thickness of 60nm; the metal layer used for the micropattern array metal layer is chromium, the thickness of the metal layer is 40nm, the micropatterns are arranged in a quadrilateral array, and the array period is 50.5μm, such as image 3 .

[0037] The color dynamic display film of this embodiment is obtained through the following preparation process:

[0038] Prepare a photoresist mi...

Embodiment 2

[0041] In this embodiment, the color dynamic display film such as figure 1 As shown, it consists of a microlens array layer, a transparent medium layer I, a transparent medium layer II and a micrographics array metal layer from top to bottom. Among them, the microlens array is arranged in a hexagonal manner, the period is 86.6 μm, and the focal length of the lens is 200 μm, such as Figure 5 The transparent medium layer I is made of quartz material with a refractive index of 1.42 and a thickness of 200 μm; the transparent medium layer II is a ZnS thin film layer with a refractive index of 2.50 and a thickness of 55 nm; the metal layer used for the micrographic array metal layer is chromium with a thickness of 40 nm , the micropatterns are arranged in a hexagonal array, and the array period is 85.7 μm, such as Figure 6 .

[0042] The color dynamic display film of this embodiment is obtained through the following preparation process:

[0043] Using a quartz plate as a substr...

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Abstract

The invention provides a multilayer color dynamic display anti-counterfeiting film, which belongs to the technical field of anti-counterfeiting. The anti-counterfeiting film sequentially comprises a micro-lens array layer, a transparent dielectric layer I, a transparent dielectric layer II and a micro-pattern array metal layer from top to bottom, wherein the micro-pattern array metal layer comprises a light-transmitting pattern part and a light-proof metal part. The invention further provides a preparation method of the multilayer color dynamic display anti-counterfeiting film. The invention provides the multilayer color dynamic display anti-counterfeiting film based on a micro-lens array moire pattern display theory and an interference fringe theory. According to the invention, a dynamicgraph can achieve the dynamic effects of rotation, translation, floating, sinking and the like along with the change of an observation visual angle; in addition, the displayed dynamic graph is a colorgraph; the graph resolution is better; the display is more obvious; and the dynamic graph is expected to be applied to a new generation of anti-counterfeiting technology.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeiting, in particular to a multi-layer color dynamic display anti-counterfeiting film and a preparation method thereof. Background technique [0002] Historically, people have conducted in-depth research on the moiré pattern visible to the naked eye. The fringes formed by overlapping two gratings with slightly different spatial frequencies are called Moiré fringes. When the two gratings move relative to each other, the Moiré fringes will also move accordingly. Moiré fringes have become an optical anti-counterfeiting technology and have been reported by many articles. However, many moiré patterns are limited to fringe patterns formed by gratings. The design is simple, and the pattern movement method is single, which is greatly limited in practical application. In 1998, researchers such as Kamal discovered the moiré phenomenon based on the microlens array, which has a clearer display effect t...

Claims

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Application Information

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IPC IPC(8): G02B27/00G02B3/00G09F3/02
CPCG02B27/00G02B3/0006G09F3/02G09F2003/0257
Inventor 谢志梅黄鹏姜世平董小春王德麾
Owner 四川芯辰光微纳科技有限公司
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