Electro-optic Tile Faceted Surface Join Masking
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Solution Overview
Problem
Particle-based electrophoretic displays face issues with long-term image quality due to particle settling, particularly in orientations that allow settling, such as vertical planes, leading to inadequate service life and limiting their widespread usage.
Innovation Solution
The development of a tile with a light-transmissive front layer, a front electrode, an electro-optic layer capable of changing color, and a plurality of rear electrodes, where the facets are textured to provide inclined surfaces, ensuring that rear electrodes within each facet maintain the same potential, creating a seamless visual effect when tiles are arranged, thus minimizing the appearance of joins and enhancing the display's visual impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If particle-based electrophoretic displays are used in vertical plane orientations, then the display can be installed in architectural applications, but particle settling occurs leading to inadequate service life and poor long-term image quality
Solution Approach 1:
The patent applies equipotentiality by configuring rear electrodes within each facet to maintain the same electrical potential. This creates uniform electric field distribution across the electro-optic layer, preventing particle settling issues that would otherwise occur in vertical plane installations. The equipotential configuration ensures reliable long-term operation while maintaining architectural adaptability.
2Area of stationary object
If tiles are arranged to form a display surface, then the display can cover large areas, but visible joins and misalignment reduce visual quality
Solution Approach 1:
The patent uses faceted surfaces with inclined planes that create optical refraction effects. These curved/refractive surfaces redirect light in ways that mask the straight-line joins between adjacent tiles, making misalignment less visually apparent and creating a seamless appearance across large display areas.
Solution Approach 2:
The electro-optic layer's ability to change color dynamically helps mask join lines and alignment imperfections. When the display shows uniform color across tiles, the joins become imperceptible, maintaining high visual quality across large areas.
3Illumination intensity
If facets are textured to provide inclined surfaces, then visual effects are enhanced and joins are hidden, but manufacturing complexity increases
Solution Approach 1:
The front layer is segmented into multiple facets with inclined surfaces. This segmentation creates the desired visual effects and light refraction patterns while allowing each facet to be manufactured as a standardized component, reducing overall manufacturing complexity through modular repetition.
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 solution enhances the visual appeal and durability of the display by providing a seamless color-changing surface that can be used in architectural applications, offering dynamic mood adjustments and unique visual effects, while reducing the visibility of tile joins and potential misalignment issues.
Implementation Method 1
an electro-optic layer capable of changing color... the material being changed from its first to its second display state by application of an electric field to the material
Implementation Method 2
the exposed surface of the front layer being textured to provide a plurality of facets having a plurality of inclinations to the plane of the tile
Data Source
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AI summary
Electro-optic, especially electrophoretic, displays are used in variety of architectural and furniture applications, including a tile (100) comprising an electro-optic layer (110) capable of changing the color of the file, front and multiple rear electrodes and a light-transmissive polymeric layer (102), the exposed surface of which is textured to provide a plurality of facets inclined to the plane of the tile (100), the rear electrodes being aligned with the facets. A variable color writable board is also provided.