Display substrate and display panel in each of which distance from convex structure to a substrate and distance from alignment layer to the substrate has preset difference therebetween
US-12164187-B2 · Dec 10, 2024 · US
Multi-layered foil body
US9323099B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9323099-B2 |
| Application number | US-201214131314-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2012 |
| Priority date | Jul 7, 2011 |
| Publication date | Apr 26, 2016 |
| Grant date | Apr 26, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The invention relates to a multi-layered foil body ( 1 ) for marking a security document, in particular a banknote. The foil body ( 1 ) has at least one color filter layer ( 2 ) and at least one change layer ( 4 ) with an electrically controllable transmittance and/or an electrically controllable color.
First claim
Opening claim text (preview).
The invention claimed is: 1. A multi-layered foil body for marking a security document, in particular a banknote or an ID document, which has at least one color filter layer and at least one change layer with an electrically controllable transmittance and/or an electrically controllable color, which layers at least partially overlap each other, wherein the foil body comprises two differently colored color filter layers and a change layer arranged therebetween with an electrically controllable transmittance, and wherein one of the two color filter layers is formed colored in a pattern and the other forms a color surface that is homogeneous over the whole surface. 2. A foil body according to claim 1 , wherein the at least one change layer has liquid crystals which can be aligned in an electric field. 3. A foil body according to claim 1 , wherein the at least one change layer is formed from at least one PDLC layer. 4. A foil body according to claim 3 , wherein the PDLC layer is colored. 5. A foil body according to claim 1 , wherein a pattern with differently colored pattern elements is formed in at least one of the two color filter layers. 6. A foil body according to claim 1 , wherein the foil body has a reflective layer which is arranged behind the at least one color filter layer and the at least one change layer in relation to an observer. 7. A foil body according to claim 1 , wherein the foil body has at least one printed color layer. 8. A foil body according to claim 1 , wherein at least one of the at least one color filter layers is formed as a cholesteric liquid crystal layer. 9. A foil body according to claim 8 , wherein a dark or scattering layer is formed, in the form of a pattern, behind the cholesteric liquid crystal layer in relation to an observer. 10. A foil body according to claim 1 , wherein the thickness of the change layer varies. 11. A security element with at least one foil body according to claim 1 and at least one energy source that controls the change layer. 12. A security element according to claim 11 , wherein the energy source is a piezoelectric energy source with at least one layer of piezoelectric material. 13. A security document, in particular a banknote or an ID document, with at least one foil body according to claim 1 . 14. A security document according to claim 13 , wherein the foil body is arranged at least in areas in a transparent area of the security document. 15. A transfer foil with at least one foil body according to claim 1 , wherein the at least one foil body is arranged on a carrier foil of the transfer foil and can be detached from the latter. 16. A method for producing a multi-layered foil body according to claim 1 , wherein the color filter layer and/or the at least one change layer of the foil body is formed by printing onto a carrier foil.
Assignees
Inventors
Classifications
Constructional details, not otherwise provided for in this subclass · CPC title
Diffraction gratings; Holograms · CPC title
Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof (printing processes to produce identification or security features B41M3/14) · CPC title
based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals · CPC title
- G02F1/133514Primary
Colour filters · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9323099B2 cover?
- The invention relates to a multi-layered foil body ( 1 ) for marking a security document, in particular a banknote. The foil body ( 1 ) has at least one color filter layer ( 2 ) and at least one change layer ( 4 ) with an electrically controllable transmittance and/or an electrically controllable color.
- Who is the assignee on this patent?
- Stahl Rainer, Tompkin Wayne Robert, Walter Harald, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G02F1/133514. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).