Transparent Display Panel Geometry to Reduce Diffraction Haze
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Solution Overview
Problem
Transparent display devices experience increased haze values due to light diffraction caused by the regular periodicity of transmissive regions, leading to reduced clarity and visibility.
Innovation Solution
The transparent display panel design avoids parallel regularity and periodicity of transmissive regions by using partially curved or polygonal transmissive regions with obtuse internal angles, incorporating light-emitting regions and line regions to minimize diffraction and facilitate design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If transmissive regions are arranged in a regular periodic manner, then the device structure is simplified and manufacturing is easier, but light diffraction occurs causing increased haze value and reduced clarity
Solution Approach 1:
The patent applies asymmetry by changing the shape of transmissive regions from regular rectangles to irregular polygons with varying side lengths and angles. This asymmetric design disrupts the periodic structure that causes diffraction, thereby reducing haze and improving clarity while maintaining ease of manufacture through a systematic design approach.
Solution Approach 2:
The patent introduces curvature by rounding the corners of transmissive regions instead of using sharp rectangular angles. This curved design modifies the light interaction pattern, reducing diffraction effects at the edges while maintaining the overall periodic arrangement, thus improving clarity without significantly complicating manufacturing.
2Area of stationary object
If transmissive regions are made larger to increase transmission area, then more light is transmitted, but diffraction effects are intensified reducing visibility
Solution Approach 1:
The patent uses asymmetric polygonal shapes with varying side lengths to create larger transmissive areas while avoiding uniform patterns. This asymmetric design allows increased transmission area without intensifying diffraction, as the irregular boundaries disrupt the periodic light interference that would otherwise be exacerbated by larger sizes.
Solution Approach 2:
The patent applies corner rounding to transmissive regions, which allows for larger overall area while the curved edges reduce diffraction intensity compared to sharp corners. This enables increased transmission area while maintaining visibility by softening the light scattering at boundaries.
3Device complexity
If regular rectangular transmissive regions are used, then pixel design is simplified, but diffraction causes increased haze and reduced clarity
Solution Approach 1:
The patent employs asymmetric polygonal shapes for transmissive regions, which maintains relatively simple pixel design while eliminating the harmful diffraction patterns caused by regular rectangles. The systematic use of irregular polygons provides a balance between design simplicity and optical performance.
Solution Approach 2:
The patent implements corner rounding on transmissive regions, which adds minimal complexity to the pixel design while effectively reducing diffraction at the edges. This curved design approach maintains clarity by softening light scattering without requiring complex pixel 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
This design reduces light diffraction, thereby improving clarity and visibility while maintaining a high transmission area and enabling a more efficient pixel structure.
Implementation Method 1
The transparent display device transmits light in front and rear directions
Implementation Method 2
diffraction of light may occur in the device due to dual nature of light having both particle and wave characteristics
Data Source
AI summary
A transparent display panel and a transparent display device including the same are disclosed. A transparent display panel includes a substrate having a display region including a plurality of light-emitting regions and a plurality of transmissive regions; and a plurality of line regions disposed over the substrate and extending across the display region, wherein an outer contour of each of the transmissive regions is at least partially curved or wherein each of the transmissive regions has a polygonal shape, and all internal angles of the polygon shape are obtuse. Thus, parallel regularity and periodicity of array of transmissive regions are avoided wherein a haze value is reduced by reducing or minimizing occurrence of light diffraction, and thus, clarity or visibility of an image is improved.