Circular Polarized Display Medium for Direction-Dependent Images
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Solution Overview
Problem
Existing circular polarizing plates are primarily used for authenticity identification and lack innovative display modes.
Innovation Solution
A display set comprising a substrate with a polarized light separation layer and a reflective layer containing multiple pigments with circularly polarized light separation functions, and a display article with a display layer containing pigments that reflect and transmit circularly polarized light, allowing for novel display modes through directional image variation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If circular polarizing plates are used for authenticity identification, then the function of selectively transmitting circularly polarized light is achieved, but the application is limited and lacks novel display modes
Solution Approach 1:
The patent applies multi-functionality by combining a circular polarizing plate with a reflective layer containing multiple pigments (first and second circularly polarized light-separating pigments) on a transparent substrate. This composite structure enables both authenticity identification and novel display modes, allowing the same optical system to serve multiple purposes: displaying images in specific directions while maintaining the circular polarized light separation function for security verification.
Solution Approach 2:
The patent introduces a spatial dimension to the display function by utilizing directional observation. The reflective layer with multiple pigments creates images that are visible when observed from specific directions (above or below the substrate) while the circular polarizing plate maintains its function for authenticity identification. This adds a spatial observation dimension to the traditionally two-dimensional authenticity verification application.
2Adaptability or versatility
If a reflective layer with multiple pigments is added to create novel display modes, then display flexibility is improved, but device complexity increases
Solution Approach 1:
The patent merges the display function and the circular polarized light separation function into a single integrated optical system. The reflective layer containing multiple circularly polarized light-separating pigments is combined with the circular polarizing plate on a transparent substrate, creating a unified structure that achieves both display flexibility and authenticity identification without requiring separate independent systems.
Solution Approach 2:
The patent uses composite materials by combining multiple pigments with circularly polarized light separation properties within the reflective layer. These pigments work together with the circular polarizing plate to create the desired optical effects, utilizing the synergistic properties of different materials to achieve both display functionality and security verification in a single integrated system.
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 a novel display mode with complementary designs and flexible image changes based on the direction of observation, enhancing design flexibility and visual recognition.
Implementation Method 1
a polarized light separation layer which has a circularly polarized light separation function
Implementation Method 2
a reflective layer which contains two or more types of pigment each having a circularly polarized light separation function
Data Source
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AI summary
A display medium comprising a substrate having a first surface and a second surface, and a reflective layer provided on at least one of the first surface and the second surface of the substrate, wherein; the substrate includes a polarized light separation layer capable of reflecting circularly polarized light having one rotation direction DA and transmitting circularly polarized light having an opposite rotation direction to the rotation direction DA therethrough; the reflective layer contains a first reflective pigment capable of reflecting circularly polarized light having one rotation direction DBR and transmitting circularly polarized light having an opposite rotation direction to the rotation direction DBR therethrough, and a second reflective pigment capable of reflecting circularly polarized light having one rotation direction DBL and transmitting circularly polarized light having an opposite rotation direction to the rotation direction DBL therethrough; the rotation direction DBR of the circularly polarized light that the first reflective pigment can reflect is opposite to the rotation direction DBL of the circularly polarized light that the second reflective pigment can reflect; and a hue of the circularly polarized light that the first reflective pigment can reflect and a hue of the circularly polarized light that the second reflective pigment can reflect differ from each other.