Nanoscaled Moth-Eye Patterned Display Panel Anti-Reflection
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Solution Overview
Problem
Display panels face challenges in reducing external light reflectance without using a polarizer, which increases production costs and decreases light transmittance.
Innovation Solution
Incorporating a nanoscaled moth-eye patterned layer on insulation layers and anti-reflection layers to reduce external light reflectance and increase light transmittance, while an anti-reflector is used on areas other than light-emitting diodes to further minimize reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polarizer is disposed on the display panel surface to reduce external light reflectance, then reflectance is reduced, but production cost increases and light transmittance decreases
Solution Approach 1:
The patent changes the surface morphology parameter of the insulation layer by introducing a nanoscaled moth-eye pattern, transforming it from a flat surface to a microstructured surface. This parameter change enables anti-reflective functionality without requiring expensive polarizer materials, thereby reducing production cost while maintaining low reflectance
Solution Approach 2:
The patent replaces the expensive polarizer with a cost-effective nanoscaled moth-eye patterned layer formed on the insulation layer. This patterned layer achieves the anti-reflective function at lower material and manufacturing costs, making it an economical substitute for traditional polarizer-based solutions
2Object-affected harmful factors
If a polarizer is disposed on the display panel surface to reduce external light reflectance, then reflectance is reduced, but light transmittance decreases
Solution Approach 1:
The patent modifies the surface parameter of the insulation layer by creating a nanoscaled moth-eye pattern, which changes the optical interaction characteristics. This parameter change reduces external light reflectance through gradient refractive index effects while maintaining high light transmittance for emitted display light, avoiding the transmittance loss associated with polarizers
Solution Approach 2:
The nanoscaled moth-eye pattern is selectively formed on specific insulation layers that are positioned in the optical path of emitted light, while other regions maintain their original properties. This localized application ensures optimal anti-reflective performance for display light transmission while minimizing impact on overall panel structure
3Object-affected harmful factors
If an anti-reflector is disposed on areas other than light-emitting diodes, then reflectance is further reduced, but device complexity increases
Solution Approach 1:
The nanoscaled moth-eye patterned layer is designed to serve multiple functions: it provides anti-reflective properties for external light, maintains high transmittance for display light, and can be integrated with existing insulation layer structures. This multi-functionality reduces the need for separate anti-reflector components, thereby limiting the increase in device complexity
Solution Approach 2:
The patent merges the anti-reflective function with the existing insulation layer by forming the nanoscaled moth-eye pattern directly on the insulation layer. This integration combines the structural support function of the insulation layer with the optical anti-reflective function, reducing the total number of discrete layers and minimizing device complexity
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 approach effectively reduces external light reflectance and enhances light transmittance without the need for a polarizer, improving image perception and reducing production costs.
Implementation Method 1
a nanoscaled moth-eye patterned layer patterned on at least a portion of one surface thereof
Implementation Method 2
an anti-reflector disposed on at least a portion of an area other than areas corresponding to areas on which the light-emitting diodes are disposed
Data Source
AI summary
A display panel has a nanoscaled moth-eye pattern that is patterned and disposed on at least one layer disposed on a path along which light emitted from light-emitting diodes emerges, such that transmittance of light emerging outward from the display panel can be increased while reducing reflectance of external light. Further, an anti-reflector is disposed on an area other than a light-emitting area, and the moth-eye pattern is disposed on open areas of the anti-reflector. Thereby, it is possible to suppress reflected light and prevent reflection of external light on an area on which the anti-reflector cannot be disposed.