CN1392521A - Anti-fake method by using liquid crystal material - Google Patents
Anti-fake method by using liquid crystal material Download PDFInfo
- Publication number
- CN1392521A CN1392521A CN 01114119 CN01114119A CN1392521A CN 1392521 A CN1392521 A CN 1392521A CN 01114119 CN01114119 CN 01114119 CN 01114119 A CN01114119 A CN 01114119A CN 1392521 A CN1392521 A CN 1392521A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- layer
- crystal material
- crystal layer
- security devices
- Prior art date
- 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.)
- Granted
Links
Images
Abstract
The present invention provides an anti-fake method with liquid crystal material including liquid crystal polymer and corresponding thermosetting body. Five different structures including protecting layer, liquid crystal layer, device to be anti-fake protected, etc. are produced. By using the selective reflecting and selective transmitting performance of the liquid crystal material changing with outer conditions, the present invention prevents fake. The present invention has wide application range and is especially suitable for anti-fake container, package and trade mark.
Description
The invention belongs to field of anti-counterfeit technology, particularly with the false proof method of liquid crystal material.
Because the widespread use of universal and other hi-tech of color photocopying, magnetic technique causes various tickets, trade mark etc. to be forged and grows with each passing day, liquid crystal material is used for false proof energy increases false proof security and reliability.Liquid crystal material has been widely used in the visual demonstration of eyes, as electronic watch, TV, display etc.At present liquid crystal is false proof also a report, as the micromolecule liquid crystal microcapsuleization, is used for false proofly, and AU-488662 has reported this technology, but owing to the intensity of microcapsules and micromolecule to the susceptibility of environment, limited its application.
The object of the present invention is to provide a kind ofly be suitable for packing, ticket and trade mark etc. are wider with the false proof method of liquid crystal material.
The used liquid crystal material of the present invention is cholesteric liquid crystal polymer and corresponding hot solids.Because this class liquid crystal has optical properties such as light selective reflecting and selective permeations, utilizes these optical properties and these optical properties to carry out false proof with the performance that change of external conditions changes.The performance of change color is carried out false proof with the pressure variation as this class liquid crystal material.Smectic C phase liquid crystal material also has above-mentioned character.
The used liquid crystal material of the present invention is solid at normal temperatures, and this kind liquid crystal material is transparent or semitransparent coloured macromolecule material at visible region, also can be that infrared light district and ultraviolet region have the reflection of selection or through performance.This type of liquid crystal material can be made membrane material, also can be prepared into the stratified material of multilayer.
Narrate content of the present invention below in conjunction with accompanying drawing.
Fig. 1,2,3,4,5 is formation synoptic diagram of the present invention, and Fig. 6,7,8,9 is used for false proof principle key diagram for the present invention.
The film thickness of the liquid crystal material that the present invention selects for use is 10um-100um.Be used for the false proof following structure that is made into:
A, as shown in Figure 1 is respectively from top to bottom: protective seam, liquid crystal layer, bottom (reflection horizon or absorption layer), by security devices;
B, as shown in Figure 2 is respectively from top to bottom: protective seam, liquid crystal layer, and transparent or semitransparent by security devices;
C, as shown in Figure 3: be respectively from top to bottom: the liquid crystal layer of protective seam, two kinds of different colours, red liquid crystal layer, or green (blueness) liquid crystal layer, transparent or semitransparent by security devices.
D, as shown in Figure 4: from top to bottom, protective seam, liquid crystal layer (one side of something is the red liquid crystal layer, and another one side of something is the green liquid crystal layer) can be transparent or semitransparent by security devices, also can be the security devices of band absorption layer.
E, as shown in Figure 5: be respectively from top to bottom: protective seam, liquid crystal layer are red liquid crystal layer or green (blueness) liquid crystal layer, the band absorption layer by security devices.
The thickness of the protective seam 1 among the present invention is 20um-500um, available transparent resin such as PVC, PE polyimide, polycarbonate, cellulose family, also useable glass paper.This layer should not have birefringenct property, even but birefringenct property is arranged, also can obtain the better protect effect, disturb also little to liquid crystal layer.Liquid crystal layer 2 among the figure can be one deck, also two layers or multilayer, the liquid crystal layer with same color is superimposed, reflection or see through identical light can improve reflex and see through effect.2a and 2b among the figure are liquid crystal layer, and color is respectively green or red (or red and green, red and blue), and it can increase false proof artistic effect.3 when can be used as absorption layer for bottom among Fig. 1, also can be used as the reflection horizon, and its thickness is not done requirement substantially, but thickness is that 20um-1000um is better, can be paper, plastics, the metal film of black.When bottom can be for having the metal film of gloss, as the aluminium film of grey metal gloss, the copper film of golden gloss, enamel film during as the reflection horizon.4 is by security devices among the figure, as file, and paper, passport, container, 5 is transparent or semitransparent by security devices, as bottle cap, vessel, 6 for the security devices with dark absorption layer, as black, mazarine, dark-brown vessel, file etc.The multilayer material that more than makes can be made various patterns according to commercial requirement increases antifalse effect.
Fig. 6 has expressed false proof principle; when light is shining into scribble liquid crystal transparent or semitransparent during by false proof object 5 from top; light has passed through protective clear layer 1 and liquid crystal layer 2; principle according to reflected light and transmitted light complementation; see green from the light x direction that reflects, see through light Y direction and see that the color Y of complementary light is for red.If directions X is observed redness, it is green seeing through light Y, and directions X is observed the blue light Y of seeing through for yellow.Can be used for trade mark, container is false proof.
It is false proof that Fig. 7 has expressed instrument, the light that sends from light source 8 through the ripple of liquid crystal layer 2 reflections after filtration mating plate 9 can detect the wavelength of reflection to wave detector 10.Arrive optical filter 11 from the light transmission liquid crystal layer 2 of light source 8 emissions, enter wave detector 12, can carry out perception reflex light and see through light wavelength, reflected light with instrument, see through light and in visible light or non-visible light range, can detect, therefore can select liquid crystal layer as required.Make the light of selecting reflection and selecting to see through, also can be at visible region in the non-visible light district.
Fig. 8 is the reflected light of visualization liquid crystal layer 2 and sees through light, from 13,14 liang of observation point, observe the reflected light of different colours in visible-range; Locate the light that sees through that observation point is observed different colours at 15,16 liang.
Fig. 9 has reflected that pressure acts on liquid crystal layer reflected light change in color.Fig. 9 a is when not exerting pressure, and Fig. 9 b is the situation after exerting pressure, and when when different observation point are observed, when observing perpendicular to liquid crystal layer 2, observes redness at 17 places, observes yellow at 18 places, and green or blueness are observed at 19 places in the back of exerting pressure; Observe green, blueness or bluish violet at 20 places.
The invention provides the wider false proof method of usefulness liquid crystal material of a kind of scope of application, the present invention is particularly suitable for the false proof of container, drug packaging thing and trade mark, as senior commodity packaging, hard disc of computer, electron device, various credit cards, medicine class, drinks, file, paper, passport etc.
Claims (6)
1. one kind with the false proof method of liquid crystal material, it is characterized in that the liquid crystal material of selecting for use is a cholesteric liquid crystal polymer, and smectic C phase liquid crystal polymer and corresponding hot solids are used for by security devices according to following order:
A, from top to bottom: protective seam, liquid crystal layer, bottom (reflection or absorption layer), by security devices;
B, from top to bottom: protective seam, liquid crystal layer, transparent or semitransparent by security devices;
C, from top to bottom: the liquid crystal layer of protective seam, two kinds of different colours, transparent or semitransparent by security devices;
D, from top to bottom: protective seam, half of red liquid crystal layer, half of green liquid crystal layer, transparent or semitransparent by the security devices of security devices or band absorption layer;
E, from top to bottom: protective seam, liquid crystal layer, the band absorption layer by security devices;
The above-mentioned multilayer material that makes also can be made various patterns.
2. according to claim 1 with the false proof method of liquid crystal material, it is characterized in that said protective layer used:
A, transparent resin or plastics, as PVC, PE polycarbonate, polyimide;
B, cellulose family;
C, viscose paper;
D, glass.
3. according to claim 1 with the false proof method of liquid crystal material, it is characterized in that said liquid crystal layer can be:
A, one deck,
B, two layers,
C, multilayer.
4. according to claim 1 with the false proof method of liquid crystal material, it is characterized in that said absorption layer for dark, available black, mazarine is brown
A, paper,
B, plastics,
C, glass,
D, metal back layer.
5. according to claim 1 with the false proof method of liquid crystal material, it is characterized in that adopting to liquid crystal layer and exert pressure and the look change, distinguish true from false.
6. the false proof method of liquid crystal material of using according to claim 1 is characterized in that adopting instrument, distinguish true from false.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011141190A CN1173311C (en) | 2001-06-22 | 2001-06-22 | Anti-fake method by using liquid crystal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011141190A CN1173311C (en) | 2001-06-22 | 2001-06-22 | Anti-fake method by using liquid crystal material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1392521A true CN1392521A (en) | 2003-01-22 |
| CN1173311C CN1173311C (en) | 2004-10-27 |
Family
ID=4660794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011141190A Expired - Fee Related CN1173311C (en) | 2001-06-22 | 2001-06-22 | Anti-fake method by using liquid crystal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1173311C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637117B (en) * | 2004-12-08 | 2010-07-21 | 东北大学 | Optical performance application of thermotropic liquid crystal cholest and precholest polymer |
| CN101825807B (en) * | 2009-03-05 | 2011-09-21 | 上海印钞有限公司 | Liquid crystal optical anti-counterfeiting characteristic image |
| CN102556458A (en) * | 2005-08-29 | 2012-07-11 | 辛克莱系统国际公司 | Multi-layer, light markable media and method and apparatus for using same |
| CN101361026B (en) * | 2006-09-27 | 2013-07-24 | 凸版印刷株式会社 | Optical device, labeled article, optical kit and discrimination method |
-
2001
- 2001-06-22 CN CNB011141190A patent/CN1173311C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637117B (en) * | 2004-12-08 | 2010-07-21 | 东北大学 | Optical performance application of thermotropic liquid crystal cholest and precholest polymer |
| CN102556458A (en) * | 2005-08-29 | 2012-07-11 | 辛克莱系统国际公司 | Multi-layer, light markable media and method and apparatus for using same |
| CN102556458B (en) * | 2005-08-29 | 2015-06-17 | 辛克莱系统国际公司 | Multi-layer, light markable media and method and apparatus for using same |
| CN101361026B (en) * | 2006-09-27 | 2013-07-24 | 凸版印刷株式会社 | Optical device, labeled article, optical kit and discrimination method |
| CN101825807B (en) * | 2009-03-05 | 2011-09-21 | 上海印钞有限公司 | Liquid crystal optical anti-counterfeiting characteristic image |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1173311C (en) | 2004-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI395673B (en) | Discrimination medium | |
| CA2788413C (en) | Security element with expanded color-shift effect and additional thermochromic function | |
| CN101501537B (en) | Identifying medium, identifying medium manufacturing method, article and identifying medium identifying method | |
| CN100584598C (en) | Discrimination medium and discrimination method thereof | |
| EP1684098B1 (en) | Discriminating medium, method of discriminating the medium and article to be discriminated | |
| US20060073278A1 (en) | Recorded article with anti-counterfeit measures | |
| CN101542331A (en) | Identification medium, identification method and identification device | |
| JPH04144796A (en) | Data carrier with a liquid crystal security protection element | |
| US7388627B2 (en) | Discrimination medium and article to be discriminated | |
| AU2002345198B2 (en) | Security label | |
| CN1630892A (en) | Identifying medium and identifying method for object | |
| CN101435927A (en) | Composite anti-counterfeiting element and valuable goods provided with the same | |
| CN101937154A (en) | PhotoallergicPhototropic anti-fake element for protectingeventing valuable object | |
| US20100112314A1 (en) | Invisible Pigments and Ink | |
| CN104952359B (en) | Security element | |
| CN113671732A (en) | Anti-counterfeiting modification device comprising cholesteric liquid crystal display layer | |
| CN101908297B (en) | Optically variable anti-counterfeiting element | |
| AU2002345198A1 (en) | Security label | |
| CN1173311C (en) | Anti-fake method by using liquid crystal material | |
| JP5181567B2 (en) | Marking element, labeling article, and discrimination method | |
| JP5568973B2 (en) | Anti-counterfeit medium, anti-counterfeit label and article | |
| CN113665206B (en) | Flexible packaging material comprising a cholesteric liquid crystal display layer | |
| JP2003262724A (en) | Selective light reflecting body, specific polarized light radiation apparatus and authenticity determination system | |
| RU2700012C1 (en) | Security element and security document | |
| JP6478015B2 (en) | Authenticity judgment tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |