OLED Display Resonance Structure Optimization
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Solution Overview
Problem
Flexible OLED displays with microcavity structures face reduced color purity at side viewing angles, requiring additional optical films or structures that increase manufacturing costs and reduce production yield.
Innovation Solution
Implementing a low resonance structure in the bent region of OLED displays, with distinct resonance structures for front and side display parts, including varying thickness and reflectivity in electrodes to maintain color purity without additional structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If additional optical films or structures are provided to compensate reduced side color purity, then side color purity is improved, but manufacturing cost increases and production yield decreases
Solution Approach 1:
The patent changes the resonance structure parameters (thickness, material composition, or configuration) of the electrode in different display regions. By adjusting these parameters, the display achieves different color purity characteristics for front and side viewing angles without requiring additional optical films or structures, thus avoiding increased manufacturing complexity and cost.
2Manufacturing precision
If the second electrode thickness is varied to create low resonance structure, then side color purity is improved, but electrode uniformity deteriorates
Solution Approach 1:
The electrode is designed with non-uniform thickness distribution, where the thickness varies between the front display part and side display part. This local quality variation creates different resonance structures in different regions, optimizing color purity for each viewing angle while maintaining overall electrode functionality.
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
Improves visibility and maintains color purity across different viewing angles without additional structures, reducing manufacturing costs and increasing production yield.
Implementation Method 1
light beams are repeatedly reflected between a reflection layer and a transflective layer to generate a strong interference effect such that light beams having a specific wavelength range are amplified while other light beams are offset
Implementation Method 2
Electrons injected from one of the two electrodes and holes injected from the other of the two electrodes are combined in the organic light emitting member to form excitons, and light is emitted from the organic light emitting member as the excitons release energy
Data Source
AI summary
An organic light emitting diode (“OLED”) display includes: a front display part including a plurality of front pixels disposed on a substrate, where the front pixels display an image on a front surface thereof; and a side display part including a plurality of side pixels disposed on the substrate, where the side pixels display an image on a side surface thereof, where the front display part and the side display part are configured to have different resonance structures from each other.