Chromic Device Dynamic Display Medium for Diffraction Structures
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Solution Overview
Problem
Conventional diffraction structure-based display media can only change patterns or colors with viewing angle, compromising visibility of images and diffracted light patterns due to fixed transmission and reflection densities, limiting their application beyond window glass and liquid-crystal displays.
Innovation Solution
A display medium incorporating a diffraction structure section, a chromic device that controls light reflection and transmission using voltage, and a power supply, allowing for arbitrary image changes viewed from the same point by controlling voltage, along with additional features like a concealing layer and printed layer for enhanced design and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reflective layer is layered over the entire surface or in a pattern to obtain a diffracted light pattern, then the optical visual effect is achieved, but the transmission density and reflection density are fixed and do not change, limiting display flexibility
Solution Approach 1:
The patent applies a light controllable mirror element that can dynamically change its light reflection and transmission properties. This element includes a combination of thin film materials that can switch between different optical states, allowing the display medium to change between showing the diffracted light pattern and showing the printed pattern, thereby resolving the contradiction between display flexibility and device complexity
Solution Approach 2:
The light controllable mirror element changes its optical parameters (reflection density and transmission density) in response to light irradiation or electrical signals. This parameter change capability allows the same structure to serve multiple display functions without increasing complexity, as the optical properties are adjusted rather than requiring multiple fixed structures
2Illumination intensity
If a transparent diffraction grating is formed to allow visual observation, then transparency is achieved, but visibility of image and diffracted light pattern are in trade-off relationship, requiring compromise
Solution Approach 1:
The light controllable mirror element provides dynamic control over light transmission and reflection. When in transparent state, it allows high visibility of the diffracted light pattern; when in reflective state, it enhances visibility of the printed pattern. This dynamic switching resolves the trade-off by allowing optimal visibility for different display modes rather than requiring a fixed compromise
Solution Approach 2:
The light controllable mirror element acts as an intermediary between the printed layer and the diffracted light pattern. It mediates the visibility of both elements by controlling light interaction, allowing either element to be prominently displayed depending on the desired mode, thus eliminating the need for compromise in fixed transparent structures
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 dynamic display of recorded optical image information from the same viewing point, improving visibility and design flexibility, and expanding applications beyond traditional uses to fields like verification, decoration, and education.
Implementation Method 1
a chromic device that controls reflection and transmission of light by using voltage
Implementation Method 2
a diffraction structure section that records optical image information
Data Source
AI summary
A display medium that is able to arbitrarily change the display of recorded optical image information even when viewed from the same field of view, and an image display method that uses that display medium. The display medium includes a diffraction structure section on which optical image information is recorded, a chromic device that controls the reflection and transmission using voltage, and a power supply that is connected to the chromic device.