Display Plasmon Structure Alignment via Timing Mark
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Solution Overview
Problem
Existing display bodies face challenges in maintaining accurate positional relationships between two-dimensional motifs and three-dimensional structures, leading to potential misalignment and variability in banknotes and similar objects, affecting counterfeiting resistance and aesthetic quality.
Innovation Solution
A display body with a first and second optical component, where the second optical component features an uneven structure with a dielectric and a metal layer that excites surface plasmons, allowing for accurate positional alignment and distinct color emission of information, and a method for observing this display body by incident light on both surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If motifs and minute holes are formed in different steps with different methods, then manufacturing flexibility is improved, but positional alignment accuracy deteriorates
Solution Approach 1:
The patent introduces a timing mark as an intermediary reference element that mediates between the motif formation process and the minute hole formation process. The timing mark is formed first, then used as a reference for positioning both the motifs and the minute holes, ensuring accurate alignment despite being formed in different manufacturing steps with different methods
Solution Approach 2:
The patent applies preliminary action by forming the timing mark in advance before forming the motifs and minute holes. This timing mark serves as a pre-established reference that guides the subsequent positioning operations, ensuring that all elements are aligned according to the predetermined design positions
2Loss of information
If multiple optical components are used to display different information, then information richness is improved, but device complexity increases
Solution Approach 1:
The timing mark serves multiple functions: it acts as a positioning reference for aligning motifs, serves as a reference for forming minute holes, and enables accurate registration between different optical components. This multi-functionality reduces the need for separate reference elements for each alignment task, thereby reducing overall device complexity while maintaining information richness
Solution Approach 2:
The patent merges the timing mark function with the overall alignment system, using a single reference element to coordinate the positioning of multiple optical components (motifs and minute holes). This consolidation approach displays multiple pieces of information through different optical components while avoiding the complexity of multiple independent positioning systems
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
Ensures accurate positional relationship and enhanced counterfeiting resistance by maintaining precise alignment and visibility of information through distinct color emission, improving the display body's authenticity and aesthetic appeal.
Implementation Method 1
The uneven structure includes a plasmon structure that receives the second light on the interface and excites surface plasmons on the metal layer so that the second optical surface emits transmitted light that forms the second information and differs from the second light in color
Data Source
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AI summary
A display body includes a first surface, a second surface, a first optical component, and a second optical component. The first surface includes a first optical surface and a second optical surface. First light is incident on the first surface from an observation side. The second surface is located opposite to the observation side with respect to the first surface. Second light is incident on the second surface from a side opposite to the observation side with respect to the second surface. The first optical component includes the first optical surface and forms first information, which is displayed on the observation side, from the first light received on the first optical surface. The second optical component includes the second optical surface. The second optical component receives the second light transmitted through the second surface, forms second information, which is displayed on the observation side, from the second light, and emits the second information from the second optical surface.