CN104635421A - Enhanced micro-pattern amplification display structure - Google Patents

Abstract

The invention relates to an enhanced micro-pattern amplification display structure. A micro-pattern with a strong contrast pattern display effect can be obtained by coating the surface of the micro structure with a metal film layer. The enhanced micro-pattern amplification display structure can be widely applied to the fields such as micro character/pattern forgery prevention and three dimensional/dynamic display/forgery prevention.

Description

The micro-pattern of a kind of enhancement mode amplifies display structure

Technical field

The present invention relates to a kind of based on yardstick from several microns to tens microns even up to a hundred microns enhancement mode micrographics amplify display method; By at micro-structure surface plating rete, and after adding microlens array, the pattern displaying effect with strong contrast can be obtained.The fields such as the pattern that this technology produces can be widely used in micro text/pattern anti-fake, three-dimensional/Dynamic Announce/false proof.

Background technology

From the nineties in last century, micro text, 3-D display, the technology such as false proof just obtain and develop rapidly, and mainly based on laser hologram, but this technology is semi-over, and antiforge function is challenged.In addition also had the technology such as such as watermark anti-counterfeiting also to develop for a long time, ultimate principle and implementation method also substantially understand by masses.In the urgent need to developing new anti-counterfeiting technology.

There has been proposed the amplification display method for anti-counterfeit based on optical principle, this side's ratio juris is: under normal lighting conditions, and the ultimate resolution of human eye is 1 point, and under distance of distinct vision 250mm condition, the ultimate resolution of human eye is 0.072mm for this reason.In general for making eyes not tired, the visual angle of human eye, at about 4 points, can resolution distance be namely two points of about 0.3mm.In the ordinary course of things, 10 × 10 stippled composition simple patterns, its size is about about 4mm × 4mm, and other tiny object must adopt magnifier or microscope to carry out amplifying and just can see its fine structure clearly.Must adopt the aids such as microscope for the pattern being less than this yardstick, this observation brings very big inconvenience.

Subsequently, people have developed again based on the three-dimensional of microlens array, Dynamic Announce and anti-counterfeiting technology, but above-mentioned technology is subject to the restriction of existing pixel dimension (150 microns), are difficult to obtain smooth Dynamic Announce effect and slim thickness.In like manner, in three-dimensional television, also there are the problems referred to above, adopt existing pixel, the display of 3-D view becomes phasic Chang with observation angle, and the Pixel Dimensions only having employing more small can obtain smooth Three-Dimensional Dynamic effect.

But, existing printing technology as: screen printing technique, relief printing plate brush technology, gravure application etc. all should can only complete the resolving power of 600DPI, i.e. per inch 600 line pair, minimum about 40 microns of line period.For the width lines that only 1-2 micron is even less, adopt existing typography cannot complete at all.Lines based on above-mentioned tens micron order width realize false proof and dynamic 3D display impossible especially.

In order to overcome the problems referred to above, we have proposed the micro-pattern of a kind of enhancement mode based on impression, metal coating technology and amplify display structure, first stamping technique is utilized to complete the impression of three-dimensional micro-nano structure on the surface of organic plastics rete, subsequently by can realize the shaping of enhancement mode micrometre-grade pattern at the three-dimensional micro-nano structure pattern plane metal-coated membrane impressed, finally load lenticule thereon and can obtain dynamic three-dimensional display effect.Effectively can overcome the not high problem of existing printing technology resolving power based on said method, complete the shaping of micro-pattern with micron order resolving power, be with a wide range of applications in the field such as 3D display, micro pattern anti-fake, Dynamic Announce.

Summary of the invention:

Based on above-mentioned consideration, a kind ofly amplify display structure based on yardstick from several microns to the micro-pattern of tens microns even enhancement mode of up to a hundred microns; By three-dimensional micro-nano structure plating metal on surface rete after imprinting, the pattern displaying effect with strong contrast and metal sense can be obtained.

Technical solution of the present invention is completed by following steps: the micro-pattern of a kind of enhancement mode amplifies display structure, it is characterized in that:

1, a kind of enhancement mode micro-pattern amplification display structure is made up of graph layer, reflection horizon, wall and micro-lens arrays layer.

2, in claim 1, the graph layer of statement has following feature: the pattern on graph layer surface can by have the three-dimensional micro-nano structure of continuous-surface shape to form or the three-dimensional microstructures with stepped surfaces pattern is formed.The cross-sectional profile pattern of above-mentioned continuous-surface shape three-dimensional micro-nano structure and step-like shape three-dimensional micro-nano structure can for including but not limited to that semisphere, triangle, trapezoidal, rectangle are at interior various geometric figures, and above-mentioned three-dimensional micro-nano structure pattern can be cycle, quasi-periodicity or aperiodic three-dimensional micro-nano structure pattern array; From multiple view, the micro-nano structure that graph layer carries has the indicating characteristic of obvious three-dimensional structure object under the microscope;

3, in claim 1, the reflection horizon of statement has following feature: reflection horizon is the layer of metal film being close to graph layer surface evaporation, for carrying out high-efficiency reflective to the light being irradiated to projection that graph layer carries or recessed three-dimensional micro-nano structure surface, form the efficiency light reflecting effect of metal film type;

4, in claim 1, the reflection horizon of statement has following feature: if graph layer itself has the efficiency light reflecting effect of metallic film type, then graph layer and reflection horizon are combined into 1 layer;

5, in claim 1, the wall of statement has following feature: wall is mainly used in the distance between accommodation reflex layer and micro-lens arrays layer, makes reflection horizon be positioned at the focal plane place of micro-lens arrays layer; Wall can for including but not limited to that plastics, air are in interior various materials;

The maximum feature of the present invention is: adopt this technology to obtain and have three-dimensional feature, dynamic display effect; And technique is simple, adopt existing holography and laser film technology relevant device can complete, for 3-D display, Dynamic Announce and anti-counterfeiting printing technology provide new means and realization means.

The present invention compared with prior art has the following advantages:

1, this technology based on the micro-pattern of the three-dimensional of micro/nano level architectural feature, can obtain three-dimensional, that amplify, dynamic display effect, completely different from existing display effect;

2, the amplification display structure prepared of this technology, realizes based on upper and lower two the surfacial pattern actings in conjunction of substrate film, and this be copy this structure to propose very large difficulty.

3, the display structure described in this technology is very simple, effectively, and with existing process compatible, adopt existing holographic laser to equip the batch production that can complete this structure.

Accompanying drawing explanation

Fig. 1 is the three-dimensional micro-nano structure pattern schematic diagram that will show in the embodiment of the present invention 1;

Fig. 2 is the unit pattern of the pattern of three-dimensional micro-nano structure shown in Fig. 1, and mark 1 is respectively the cross section of zones of different with mark 2;

The profile in Fig. 3 a cross section shown in the mark 1 of unit pattern in Fig. 2, its section shape is spherical crown;

Fig. 3 b is another region of unit pattern in Fig. 2, the section profile in cross section shown in mark 2, and its section shape is trapezoidal;

Fig. 4 a is the section profile of the nickel mother matrix corresponding with marking 1 in Fig. 2;

Fig. 4 b is the section profile of the nickel mother matrix corresponding with marking 2 in Fig. 2;

Mark the section profile of stock surface three dimension micro-nano structure pattern corresponding to 1 place in Fig. 5 a and Fig. 2, the surface of this three-dimensional micro-nano structure pattern is the graph layer in claims of the present invention;

Fig. 5 b is the section profile of the stock surface three dimension micro-nano structure pattern corresponding with marking 2 places in Fig. 2, and the surface of this three-dimensional micro-nano structure pattern is the graph layer in claims of the present invention;

Fig. 6 a is the section profile of the stock surface three dimension micro-nano structure pattern after the evaporation metal silver layer corresponding with marking 1 place in Fig. 2, and mark 3 is metallic silver layer, and this metallic silver layer is the reflection horizon in claims of the present invention;

Fig. 6 b is the section profile of the stock surface three dimension micro-nano structure pattern after the evaporation metal silver layer corresponding with marking 2 places in Fig. 2, and mark 3 is metallic silver layer, and this metallic silver layer is the reflection horizon in claims of the present invention;

The display film profile structure that Fig. 7 has been, marking 3 in figure is the metallic silver reflective layers of evaporation, and mark 4 is the wall between lenticule and metallic silver layer be made up of the resin protective layer applied, and mark 5 is micro-lens arrays layer, and mark 6 is stock.

The display film stereo view that Fig. 8 has been, the wall that 4 are coating is marked in figure, mark 5 is micro-lens arrays layer, mark 6 is stock, stock upper surface is graph layer, the silver layer of evaporation in graph layer surface forms reflection horizon, and mark 7 be the continuous-surface shape micrographics of the three-dimensional of the suspension of the amplification shown through lenticule.

Fig. 9 is the Dynamic Announce structure of a kind of metal surface three-D micro-nano pattern of setting forth in embodiment two; 8 are marked for carrying the argent partial enlarged drawing of three-dimensional micro-nano structure pattern in figure, its surface had both been served as graph layer and had also been served as reflection horizon, mark 9 is the wall be made up of air, and space layer is focal length of micro-lens array, and mark 5 is micro-lens arrays layer.

Embodiment

Embodiment 1, a kind of Dynamic Announce film strengthening three-dimensional micro-pattern based on high-contrast;

First laser writing technology is adopted to complete the processing of initial three-dimensional micro-nano structure pattern.The three-dimensional micro-nano structure pattern that will show in the present embodiment is periodic pattern, as shown in Figure 1.Fig. 2 is the unit pattern of pattern shown in Fig. 1, and mark 1 is respectively the cross section of zones of different with mark 2.Mark the profile in cross section shown in 1 in Fig. 2 that Fig. 3 a is unit pattern, its section shape is spherical crown.Fig. 3 b is another region of unit pattern in Fig. 2, and the section profile in cross section shown in mark 2, its section shape is trapezoidal.

Secondly, adopting the correlation techniques such as electroforming, the three-dimensional micro-nano structure pattern electroforming machined is become the three-dimensional micro-nano structure pattern nickel mother matrix of nickel material in Fig. 1, seeing Fig. 4 a and Fig. 4 b with section profile mark the 1 nickel mother matrix corresponding with marking 2 in Fig. 2.Adopt nano impression mode, by the three-dimensional micro-nano structure imprint patterns of three-dimensional micro-nano structure pattern nickel material master surfaces that completes in the surface of stock (in the present embodiment, stock is plastic sheeting), this surface is graph layer; With mark 1 in Fig. 2 and see Fig. 5 a and Fig. 5 b with the section profile of stock surface three dimension micro-nano structure pattern corresponding to mark 2, namely graph layer profile is shown in Fig. 5 a and Fig. 5 b.

The stock three-dimensional micro-nano structure patterned surfaces evaporation metal silverskin impressed, forms reflection horizon, with mark in Fig. 21 with mark 2 corresponding evaporation metal argentum reflecting layers after the section profile of stock surface three dimension micro-nano structure pattern see Fig. 6 a and Fig. 6 b.In surface, reflection horizon coated with resins, form wall, adopt the technique such as follow-up drying and coating protective paint to carry out antibody Monoclonal process to reflection horizon.

At stock reflection horizon surface imprint microlens array, see Fig. 7, marking 3 in figure is the metallic silver reflective layers of evaporation, and mark 4 is the wall between the lenticule of coating and metallic silver layer, and mark 5 is micro-lens arrays layer.The three-dimension dynamical display effect that three-dimensional micro-nano structure pattern as shown in Figure 8 amplifies can be obtained after adding micro-lens arrays layer; Marking 4 in Fig. 8 is the wall between lenticule and metallic silver layer applied, space layer equals focal length of micro-lens array, mark 5 is micro-lens arrays layer, mark 6 is stock, its upper surface is through silver-plated three-dimensional micro-nano structure patterned reflective layer, and mark 7 be the continuous-surface shape micrographics of three-dimensional of the suspension of the amplification shown through lenticule.

Embodiment two, the Dynamic Announce structure of a kind of metal surface three-D micro-nano pattern;

First adopt the technology such as laser direct-writing, make micro-nano structure graphics template, secondly adopt the technology such as electroforming to complete the preparation of electroformed nickel mother matrix; This mother matrix is utilized to carry out mold pressing to argent subsequently, the micro-nano structure with three-dimensional feature is printed in metal surface, and placement microlens array film can carry out amplification display to the micro-nano pattern of metal silver surface above it, obtain the display effect of 3 D stereo, as shown in Figure 9,8 are marked for carrying the argent partial enlarged drawing of three-dimensional micro-nano structure pattern in figure, its surface had both been served as graph layer and had also been served as reflection horizon, mark 9 is the wall be made up of air, space layer is focal length of micro-lens array, and mark 5 is micro-lens arrays layer.

Claims (5)

1. enhancement mode micro-pattern amplification display structure is made up of graph layer, reflection horizon, wall and micro-lens arrays layer.

2. in claim 1, the graph layer of statement has following feature: the pattern on graph layer surface can by have the three-dimensional micro-nano structure of continuous-surface shape to form or the three-dimensional microstructures with stepped surfaces pattern is formed.The cross-sectional profile pattern of above-mentioned continuous-surface shape three-dimensional micro-nano structure and step-like shape three-dimensional micro-nano structure can for including but not limited to that semisphere, triangle, trapezoidal, rectangle are at interior various geometric figures, and above-mentioned three-dimensional micro-nano structure pattern can be cycle, quasi-periodicity or aperiodic three-dimensional micro-nano structure pattern array; From multiple view, the micro-nano structure that graph layer carries has the indicating characteristic of obvious three-dimensional structure object under the microscope.

3. in claim 1, the reflection horizon of statement has following feature: reflection horizon is the layer of metal film being close to graph layer surface evaporation, for carrying out high-efficiency reflective to the light being irradiated to projection that graph layer carries or recessed three-dimensional micro-nano structure surface, form the efficiency light reflecting effect of metal film type.

4. in claim 1, the reflection horizon of statement has following feature: if graph layer itself has the efficiency light reflecting effect of metallic film type, then graph layer and reflection horizon are combined into 1 layer.

5. in claim 1, the wall of statement has following feature: wall is mainly used in the distance between accommodation reflex layer and micro-lens arrays layer, makes reflection horizon be positioned at the focal plane place of micro-lens arrays layer; Wall can for including but not limited to that plastics, air are in interior various materials.