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US 12,552,194 B2Granted
Security document comprising a perforated opaque layer with a white appearance above a matrix of coloured sub-pixels
AssigneeIdemia Identity & Security France
InventorBenoit Berthe
Life of this patent
Estimating the term…
Abstract
A security document having a stack of layers including a matrix of coloured sub-pixels, an opaque layer with a white appearance above the matrix of coloured sub-pixels, the opaque layer with a white appearance having perforations facing sub-pixels of the matrix of coloured sub-pixels such that, when the device is observed from above, a coloured image appears.
Claims14
A security document comprising:
- a stack of layers having a matrix of coloured sub-pixels;
- an opaque layer with a white appearance above the matrix of coloured sub-pixels;
- and
- a laserable layer arranged above the opaque layer with a white appearance and configured to be laserized by applying a laser beam at at least one laserization wavelength,
- wherein the opaque layer with a white appearance includes perforations facing sub-pixels of the matrix of coloured sub-pixels such that, when the security document is observed from above, a coloured image appears,
- wherein the perforations pass through the opaque layer, and
- wherein the laserable layer comprises portions that are blackened by laserization.
4 more elements
A method for manufacturing a security document, comprising:
- assembling a matrix of coloured sub-pixels with, above the matrix of coloured sub-pixels, an opaque layer with a white appearance;
- and
- forming perforations through the opaque layer with a white appearance and facing sub-pixels of the matrix of coloured sub-pixels such that, when the security document is observed from above, a coloured image appears,
- wherein the perforations pass through the opaque layer and the opaque layer includes a metal oxide,
- wherein a laserable layer is furthermore assembled above the opaque layer with a white appearance and configured to be laserized by applying a laser beam at at least one laserization wavelength, and
- wherein the laserable layer is laserized to obtain blackened portions.
3 more elements
A security document comprising:
- a stack of layers having a matrix of coloured sub-pixels;
- and
- an opaque layer with a white appearance above the matrix of coloured sub-pixels,
- wherein the opaque layer with a white appearance includes a trench and perforations facing sub-pixels of the matrix of coloured sub-pixels such that, when the security document is observed from above, a coloured image appears,
- wherein the perforations pass through the opaque layer and the opaque layer includes a metal oxide, and
- wherein the trench is independent from the perforations.
3 more elements
Dependencies are inferred from the claim text.