Display Panel Opening Offset for Viewing-Angle Color Control
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Solution Overview
Problem
Organic light-emitting display screens face issues with brightness deterioration and color deviation at certain viewing angles due to light reflection and refraction across multiple film layers, leading to inefficient light emission and display quality.
Innovation Solution
A display panel design featuring a light extraction layer with a first matching layer and a second matching layer, where the geometric centers of the light extraction openings and black matrix openings are not aligned, improving light-emitting efficiency and reducing color aberration by adjusting brightness and light direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If light extraction layer is added to improve light emission, then light extraction efficiency is improved, but brightness deteriorates at certain viewing angles due to reflection and refraction
Solution Approach 1:
The patent introduces asymmetric offset positioning between the light extraction opening and black matrix opening, where their geometric centers do not coincide. This asymmetric arrangement creates different optical paths for reflected and refracted light, preventing concentrated brightness deterioration at specific viewing angles while maintaining overall light extraction efficiency.
2Adaptability or versatility
If multiple layers of film structures are used to achieve display function, then display capability is achieved, but light is reflected and refracted in various ways causing color mixture from adjacent pixels
Solution Approach 1:
The offset positioning between light extraction opening and black matrix opening creates asymmetric light blocking patterns that prevent light from adjacent pixels from mixing through the display stack, thereby reducing color mixture while preserving display functionality.
Solution Approach 2:
The black matrix opening is strategically positioned to provide localized light blocking exactly where needed - adjacent to the light extraction opening - creating different optical properties in different regions of the display structure to prevent color mixture.
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
Enhances light-emitting efficiency and display quality by optimizing light extraction and filtering, reducing color deviation and brightness attenuation across various viewing angles.
Implementation Method 1
An organic light-emitting display screen includes multiple layers of film structures with different refractive indices, so light emitted by a pixel will be reflected and refracted in various ways
Implementation Method 2
light emitted by a pixel will be reflected and refracted in various ways but not be emitted directly above the pixel
Data Source
AI summary
The application provides a display panel and a display device. The display panel includes: a black matrix opening and a light extraction opening, wherein an orthographic projection of the black matrix opening on a substrate is a second projection, and a geometric center of the second projection is a second center, and wherein an orthographic projection of the light extraction opening on the substrate is a third projection, and a geometric center of the third projection is a third center; the second center and the third center are not aligned with each other.