OLED Display Anti-Reflection via Nested Polarizing and Colored Layers
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Solution Overview
Problem
OLED displays suffer from reduced display quality due to external light reflection, which affects the expression of black and contrast, leading to deteriorated visibility and image quality.
Innovation Solution
The implementation of a polarizing member and colored sealing or filling layers in complementary colors, such as blue-based and yellow-based, to suppress external light reflection by reducing brightness and achieving near-black mixing, thereby enhancing visibility and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polarizing member and colored sealing or filling layers in complementary colors are implemented, then external light reflection is suppressed and visibility is improved, but device complexity increases
Solution Approach 1:
The patent implements multiple functional layers (polarizing member, colored sealing layer, and colored filling layer) that are nested within each other. The polarizing member is positioned on the OLED, the colored sealing layer is disposed on the TFT and OLED, and the colored filling layer fills the space between the sealed cavity and cover window. This nested arrangement allows each layer to contribute to suppressing external light reflection through complementary color relationships, while organizing the structure in a compact manner that manages the increased complexity systematically.
Solution Approach 2:
The patent employs composite material structures by combining multiple layers with different optical properties. The polarizing member has specific polarization characteristics, while the colored sealing layer and colored filling layer have complementary color properties. Together, these composite layers create a multi-functional anti-reflection system that addresses external light reflection more effectively than single-material solutions, resolving the contradiction between performance improvement and complexity management.
2Manufacturing precision
If colored sealing or filling layers are added to suppress external light reflection, then manufacturing complexity increases, but display quality improves
Solution Approach 1:
The patent applies colored materials specifically in locations where they are most effective for suppressing external light reflection. The colored sealing layer is disposed on the TFT and OLED, while the colored filling layer fills the sealed cavity space. These localized applications of colored materials with complementary colors target specific reflection paths without requiring color treatment across the entire display structure, thereby improving display quality while managing manufacturing complexity.
Solution Approach 2:
The patent incorporates the colored sealing layer and colored filling layer as integral parts of the display structure during the manufacturing process. By pre-integrating these anti-reflection layers into the sealing and filling operations, the patent avoids the need for separate post-manufacturing steps to apply anti-reflection coatings, thereby improving display quality while maintaining relative ease of manufacture through process integration.
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 configuration effectively suppresses external light reflection, improving the visibility and image quality of OLED displays by reducing the intensity of most wavelengths of light, particularly when the polarizing member and colored layers are in a complementary color relationship.
Implementation Method 1
The implementation of a polarizing member and colored sealing or filling layers in complementary colors, such as blue-based and yellow-based, to suppress external light reflection by reducing brightness and achieving near-black mixing
Data Source
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AI summary
An organic light emitting diode (OLED) display including a substrate (100), a thin film transistor (TFT) (20) formed on the substrate (100), an OLED (70), a colored polarizing member (300) on the OLED, and a colored material (200) on the OLED and having a color that is different from that of the polarizing member (300). The OLED includes a pixel electrode (710), an organic emission layer (720) on the pixel electrode (710), and a common electrode (730) on the organic emission layer (720), wherein the pixel electrode (710) is coupled to the TFT (20).