Deformable Display Structure for Bright Latent-Image Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing anti-counterfeiting techniques for securities, such as banknotes and certificates, struggle to brightly display visual images of latent images without the need for verification tools, and existing light-shielding filters make it difficult to achieve bright visualization of such images.
Innovation Solution
A display comprising a first portion with light-deflecting structures and a second transparent portion that can be deformed to overlap, allowing a latent image to be unidentifiable without intervention and identifiable through the first portion, utilizing light-scattering and transparent regions to enhance image visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light-shielding filter with parallel lines is used to visualize a latent image, then the latent image becomes identifiable, but the visual display becomes dark and dim
Solution Approach 1:
The patent introduces a light-deflecting structure as an intermediary element between the light source and the latent image. This structure deflects light to create moiré effects that reveal the latent image while simultaneously directing light through transparent regions, thereby maintaining brightness. The light-deflecting structure acts as a mediator that achieves both image visualization and light transmission, resolving the contradiction between identifiability and brightness.
Solution Approach 2:
The patent applies local quality by creating alternating light-deflecting regions and transparent regions in the first portion. The light-deflecting regions are specifically designed to create moiré effects for image visualization, while the transparent regions allow light passage to maintain brightness. This localized differentiation of properties within the same component enables simultaneous achievement of image identifiability and display brightness.
2Reliability
If deformed parallel lines with uneven pitches and widths are used to enhance anti-counterfeiting, then security is improved, but verification complexity increases requiring specialized tools
Solution Approach 1:
The patent implements self-service by integrating both the latent image and the light-deflecting structure with moiré-effect capabilities into a single display component. This allows the display to verify its own authenticity through the moiré effect without requiring external verification tools. The display structure itself provides the verification function, eliminating the need for separate verification devices and reducing verification complexity while maintaining high anti-counterfeiting reliability.
Solution Approach 2:
The patent merges the latent image, the light-deflecting structure, and the moiré effect generation into a single integrated first portion. By combining these elements that were previously separate (latent image on second portion, filter on first portion), the invention creates a self-verify system where the display structure itself enables authentication, reducing the need for external verification tools and simplifying the overall verification process.
3Reliability
If parallel lines are printed with phases shifted by half the pitch to create latent image, then anti-counterfeiting capability is enhanced, but the lines become indistinguishable without verification tools
Solution Approach 1:
The patent applies dynamics by making the visibility of the parallel lines conditional rather than static. The lines remain indistinguishable under normal viewing conditions, but become visible when the display is deformed or viewed from specific angles that trigger the moiré effect. This dynamic visibility control allows the parallel lines to maintain their anti-counterfeiting function (remaining hidden when not verified) while enabling detection when needed through the moiré effect.
Solution Approach 2:
The patent utilizes optical property changes (analogous to color changes) through the moiré effect. When the light-deflecting structure interacts with the parallel lines at specific angles or during deformation, it creates interference patterns that make the previously indistinguishable lines visible. This optical transformation allows the parallel lines to switch between hidden and visible states, enhancing anti-counterfeiting capability while enabling detection through controlled optical effects.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables bright display of visual images by generating moiré effects or partial hiding, allowing easy identification of latent images without the need for additional verification tools, enhancing security and authenticity verification.
Implementation Method 1
a latent image is recorded in the second portion, the latent image being unidentifiable or difficult to identify when observed without an intervention of the first portion in the first state and being identifiable or easy to identify when observed through the first portion in the second state
Implementation Method 2
each of the first regions being a light-permeable region provided with a light-deflecting structure having a light-deflecting property
Data Source
AI summary
A display includes first and second portions and is deformable between a first state in which the portions are spaced apart from each other and a second state in which the portions overlap each other, wherein the first portion includes first and second regions each having a shape extending in a first direction and alternately and regularly arranged in a second direction, each of the first regions being a light-permeable region provided with a light-deflecting structure, and each of the second regions being a transparent region having flat front and back surfaces, and a latent image is recorded in the second portion, the latent image being identifiable or easy to identify when observed through the first portion in the second state.