Flexible OLED Panel Color Resist Layer for Ambient Light Reflection
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Solution Overview
Problem
Organic light-emitting display panels face challenges in reducing ambient light reflection in non-aperture regions without using a polarizer, which is prone to breakage when bent, affecting their bending resistance and stability.
Innovation Solution
Incorporating a color resist layer with black resist outside the aperture regions to absorb ambient light, replacing the polarizer, and using a thin, organic material with varying thicknesses for different color resists to maintain luminescence spectrum and improve bending resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polarizer is used to reduce ambient light reflection in non-aperture regions, then the reflection is reduced, but the bending resistance deteriorates because the polarizer is prone to breakage when bent
Solution Approach 1:
The patent changes the material parameter from traditional polarizer to color resist layer with different optical properties. The color resist layer absorbs ambient light through its color properties (matching the organic light-emitting component colors) while being integrated into the flexible substrate structure, achieving both reflection reduction and bending resistance
Solution Approach 2:
The patent uses composite material structure where the color resist layer is formed by combining organic light-emitting components with matching color resists in specific regions. This composite approach allows the layer to function both as an optical element for reducing ambient light reflection and as a flexible element that bends with the substrate
2Reliability
If a color resist layer is used to reduce ambient light reflection, then the bending resistance is improved, but the device complexity increases due to additional layers and manufacturing steps
Solution Approach 1:
The patent merges the function of ambient light reflection reduction with the existing color filter layer structure. By forming color resists in the same layer where organic light-emitting components are located, the invention combines multiple functions (light emission and ambient light filtering) into a single integrated structure, reducing overall device complexity
Solution Approach 2:
The color resist layer serves multiple functions: it acts as the light-emitting element structure, provides color filtering for ambient light, and maintains flexibility for bending applications. This multi-functionality eliminates the need for separate polarizer layers and other components, simplifying the overall device structure
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 solution effectively reduces ambient light reflection and enhances the bending resistance of the display panel by using a color resist layer that maintains chrominance and saturation without shifting, while providing a thin, flexible, and durable alternative to traditional polarizers.
Implementation Method 1
the color resist layer includes a plurality of color resists corresponding to the plurality of aperture regions and a plurality of black resists located outside the plurality of color resists in the display area
Data Source
AI summary
Provided are an organic light-emitting display panel and a display device. The organic light-emitting display panel includes: a display area; an organic light-emitting component located in the display area; a pixel defining layer located in the display area and including an aperture region defining the organic light-emitting component; a color resist layer located at a light-emitting side of the organic light-emitting component. The color resist layer includes a color resist corresponding to the aperture region, and a black resist located outside of the color resist in the display area. The color resist has a same color as the color of the organic light-emitting component corresponding to the corresponding aperture region.