Display Body Prism Layer Inclination Angle Variation

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Solution Overview

Problem

Current display body technologies face challenges in enhancing design and counterfeiting resistance, as advancements in analysis and manufacturing have made counterfeiting more feasible, necessitating a novel structure and design for authentication documents and valuable securities.

Innovation Solution

A display body configuration featuring a prism layer with varying inclination angles and a light interference layer, where the critical angle of light incidence creates a shifting border between light-transmitting and non-transmitting regions, enhancing artistry and security through continuous variation of light behavior based on observer angle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display body uses conventional structures with fixed inclination angles, then the manufacturing process is simple, but the design variety and counterfeiting resistance are limited

Engineering Contradiction:
Improvedesign varietyVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by varying the inclination angles of inclination elements at different positions within the display region. Each inclination element has a specific inclination angle relative to the array direction, creating local variations in light reflection characteristics. This enables different visual effects in different regions without requiring completely different structural designs, thus enhancing design variety while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent introduces angular dimensionality by controlling the inclination angles of inclination elements relative to the array direction. This angular parameter adds a new dimension to the design space, allowing continuous variation of visual effects by adjusting inclination angles. The border between light-transmitting and non-transmitting regions can be positioned at different locations by varying inclination angles, creating diverse design possibilities without significantly increasing structural complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If the display body uses fixed inclination angle structures, then the structure is simple to manufacture, but the border between light-transmitting and non-transmitting regions cannot shift continuously

Engineering Contradiction:
Improveborder shifting capabilityVSAvoidinclination element variation
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamics by making the inclination angles of inclination elements variable rather than fixed. The inclination angle of each inclination element is controlled relative to the array direction, allowing the border between light-transmitting and non-transmitting regions to shift continuously when the display body is tilted. This dynamic behavior is achieved through precise control of inclination element angles during manufacturing, enabling continuous border shifting without complex mechanical adjustment mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by systematically varying the inclination angle parameter of inclination elements. By controlling the inclination angle relative to the array direction, the optical properties of the display body change continuously. This parameter control enables the border position to be adjusted by changing the viewing angle, achieving continuous border shifting capability while maintaining manufacturing feasibility through precise angular control during production.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If the display body uses uniform inclination elements, then the manufacturing process is straightforward, but the visual artistry and observer engagement are reduced

Engineering Contradiction:
Improvevisual artistryVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent enhances visual artistry by applying local quality variations to inclination elements. Different inclination angles are assigned to different positions within the display region, creating localized optical effects that enhance visual appeal. The continuous variation of inclination angles produces smooth transitions and dynamic visual effects when the display body is tilted, significantly improving observer engagement while maintaining manufacturing feasibility through systematic angular control.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent introduces asymmetry by varying the inclination angles of inclination elements relative to the array direction. This asymmetric angular distribution creates non-uniform light reflection patterns that enhance visual artistry. The asymmetric design enables the border between light-transmitting and non-transmitting regions to shift in a controlled manner, creating engaging visual effects that differentiate this display body from conventional symmetric designs.

Inventive Principle:
Principle #4Asymmetry

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

This configuration significantly enhances the design and security of the display body by varying the border between light-transmitting and non-transmitting regions, making it more difficult to counterfeit and improving visual effects based on observer perspective.

Implementation Method 1

a critical angle that is an incidence angle at which the incident light is refracted along the interface when the light enters the interface layer from the prism layer

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 2

the border between a portion that transmits the light reflected by the light interference layer and a portion that does not transmit the light reflected by the light interference layer continuously varies

Methodology Applied
Scientific EffectTotal internal reflection: Total Internal Reflection

Implementation Method 3

a light interference layer, where the critical angle of light incidence creates a shifting border between light-transmitting and non-transmitting regions

Methodology Applied
Scientific EffectLight interference: Interference

Data Source

PatentEP3573044B1Display body
Publication Date: 2023.06.21 TOPPAN HOLDINGS INC
  • EP3573044B1 patent drawingFigure 1~3
  • EP3573044B1 patent drawingFigure 4~6
  • EP3573044B1 patent drawingFigure 7~8

AI summary

A display body includes a light interference layer, a prism layer, and an interface layer. Incident light enters the light interference layer at an incidence angle. The light interference layer emits reflected light. The incident light has a certain wavelength range. The reflected light has a given wavelength that is a part of the certain wavelength range. The given wavelength depends on the incidence angle. The prism layer has a light transmission property and transmits the incident light to the light interference layer. The prism layer has an uneven surface that includes at least one display region. The interface layer is adjacent to the uneven surface. The interface layer has a difference in refractive index from the prism layer such that a refractive index of a side of an interface between the uneven surface and the interface layer at which the prism layer is located is higher than a refractive index of a side of the interface at which the light interference layer is located. The display region includes inclination elements. The inclination elements adjacent to each other in an array direction contact each other in a plan view facing a plane along which the prism layer expands. The inclination elements include first inclination elements among which the inclination angle increases by a constant angle along the array direction.