Hexagonal Cylindrical Lens Film for Electrophoretic Display Brightness
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Solution Overview
Problem
Traditional electrophoretic displays lack effective brightness enhancement for light intensity, particularly when incident light travels perpendicular to the microstructural pillars, degrading display quality.
Innovation Solution
A light enhancement film with a substrate and optical microstructure featuring hexagonal cylindrical lenses arranged in a honeycombed pattern, where each lens narrows in cross-sectional area from the substrate, enhancing light intensity by adjusting the traveling path of reflective lights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a brightness enhancement film with parallel microstructural pillars is used, then light intensity is improved when incident light travels parallel to the pillars, but light intensity cannot be improved when incident light travels perpendicular to the pillars
Solution Approach 1:
The patent applies asymmetry by transitioning from symmetric parallel pillar structures to asymmetric hexagonal cylindrical lens structures with honeycombed arrangement. The hexagonal geometry with varied cross-sectional areas creates multiple reflection surfaces that can handle light from different directions, breaking the directional limitation of the original parallel pillar design.
Solution Approach 2:
The patent implements dimensionality change by arranging hexagonal cylindrical lenses in a honeycombed pattern that utilizes two-dimensional spatial distribution. This arrangement creates multiple optical paths and reflection angles, enabling the structure to effectively manage light incident from various directions rather than being limited to a single orientation.
2Illumination intensity
If reflected light from the electrophoretic film cannot be effectively transmitted outward, then light intensity for the viewer is degraded
Solution Approach 1:
The patent applies preliminary action by pre-arranging the hexagonal cylindrical lens structures on the brightness enhancement film before light incidence. These pre-configured optical elements are positioned to proactively redirect reflected light from the electrophoretic film toward the viewer, ensuring efficient light transmission rather than allowing random or lossy propagation.
Solution Approach 2:
The hexagonal cylindrical lenses act as intermediary optical elements between the electrophoretic film and the viewer. These intermediary structures receive reflected light from the film and actively redirect it toward the viewer, serving as a mediating mechanism that improves light transmission efficiency and reduces energy loss.
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
The hexagonal cylindrical lenses in the light enhancement film improve light intensity and display quality by directing and enhancing light reflection for the viewer, regardless of light direction, outperforming conventional films.
Implementation Method 1
The optical microstructure has a plurality of hexagonal cylindrical lenses inseparably arranged on a surface of the substrate... enhance light intensity to a viewer by adjusting the traveling path of the reflective lights
Data Source
AI summary
A light enhancement film provided in the disclosure includes a substrate and an optical microstructure having a plurality of hexagonal cylindrical lenses inseparably arranged on a surface of the substrate in accordance with a honeycombed arrangement. Each of the hexagonal cylindrical lenses has different cross-sectional areas that are gradually narrowed from the surface of the substrate in a direction away from the substrate, and every two adjacent lenses have a gap therebetween. Furthermore, a display device having the light enhancement film is provided as well.