Curved OLED Edge Optical Film for Chromatic Aberration Control
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Solution Overview
Problem
Curved OLED display screens experience chromatic aberration between the arc-shaped edge area and the flat area due to differences in light intensity and color ratio, which existing technologies have not effectively addressed.
Innovation Solution
An OLED display panel with an optical film layer, specifically a reflection enhancing or light absorbing film, is integrated into the edge curved-surface display area to reduce light intensity and adjust the color ratio, using a propagation distance formula to enhance reflectivity and absorption, respectively, thereby minimizing chromatic aberration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a curved OLED display screen is used to achieve a curved display effect, then the display shape and visual appeal are improved, but chromatic aberration occurs between the arc-shaped edge area and the flat area due to light intensity differences
Solution Approach 1:
The patent applies different optical film layers to different regions of the curved OLED display. Specifically, a first optical film layer is applied to the arc-shaped edge area while a second optical film layer is applied to the flat area. Each layer has different optical properties (reflectivity, transmittance, absorption characteristics) tailored to compensate for the light intensity differences in their respective regions, thereby achieving uniform overall light intensity across the curved display surface.
2Shape
If the edge curved-surface display area is used to provide curved display functionality, then the display shape is improved, but the color ratio becomes inconsistent between the edge area and flat area
Solution Approach 1:
The patent employs different optical film layers with specific spectral characteristics for different display regions. The first optical film layer in the arc-shaped edge area has different optical properties compared to the second optical film layer in the flat area, allowing each region's color output to be locally optimized to achieve consistent color ratio across the entire curved display.
3Device complexity
If existing technologies are used without optical film layers, then the device structure remains simple, but chromatic aberration cannot be effectively addressed
Solution Approach 1:
The patent introduces optical film layers as intermediary elements between the OLED light-emitting structures and the external environment. These optical film layers act as mediators that modify light propagation, reflection, and absorption characteristics to correct chromatic aberration. The films include reflective films, absorptive films, or combination films with specific optical properties that compensate for the inherent light intensity and color ratio differences in curved display regions.
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
The optical film layer effectively reduces light intensity and adjusts the color ratio, significantly reducing chromatic aberration between the flat and curved-surface areas, enhancing the uniformity and visual consistency of the display.
Implementation Method 1
subsequent to an entrance of an incident light into the reflection enhancing film, a propagation distance d of the incident light in the enhancing film satisfies a following formula: 2nd=(2k+1) λ/2 to increase a reflectivity of light with a wavelength of k
Implementation Method 2
2nd=(2k+1) λ/2 to increase a reflectivity of light with a wavelength of k
Implementation Method 3
the optical film layer includes a light absorbing film; a transmittance of light that passes through the light absorbing film becomes lower as an incident angle of light incident to the light absorbing film becomes larger
Data Source
AI summary
The OLED display includes a flat display area and an edge curved-surface display area; wherein the edge curved-surface display area is provided with an optical film layer, and the optical film layer is configured to reduce a light intensity of emergent light with a preset color in the edge curved-surface display area.