Display Panel Anti-Reflection Structure for White Edge Suppression
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Solution Overview
Problem
Existing display panels suffer from issues of white edges and metal bright edges due to incomplete alleviation of white regions and severe metal reflection, especially when the array substrate is positioned to face the viewer, which affects display performance.
Innovation Solution
Incorporating anti-reflection structures in both the display and non-display regions of the display panel, with the anti-reflection structures covering parts of the signal wires to reduce reflection, and using a black light absorption layer to prevent light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If mosaic processing is performed on black matrices in the non-display region, then white edges and metal bright edges are partially alleviated, but white regions remain and reflection problems are not fully solved
Solution Approach 1:
The patent divides the anti-reflection solution into two distinct segments: mosaic processing of black matrices in the non-display region, and a new anti-reflection layer covering signal wires in the display region. This segmentation allows each method to address specific reflection problems in their respective regions, achieving comprehensive edge alleviation that neither method could accomplish alone.
Solution Approach 2:
The patent applies different anti-reflection treatments to different regions: mosaic black matrices are used in the non-display region where they effectively block edges, while a dedicated anti-reflection layer is applied in the display region to cover signal wires. This local differentiation ensures optimal performance in each region without compromising the other.
2Shape
If the array substrate is set on the side facing the human eyes, then miniaturization and lightness are achieved, but metal reflection in the display region becomes severe
Solution Approach 1:
The patent introduces an anti-reflection layer as an intermediary substance between the metal signal wires and the viewer's eye. This layer acts as a mediator that reduces the direct reflection of light from metal surfaces, allowing the array substrate to remain in the optimal position for miniaturization while eliminating the harmful reflection effect.
3Reliability
If signal wires are exposed in the display region, then electrical connectivity is maintained, but metal reflection deteriorates display performance
Solution Approach 1:
The patent uses a thin anti-reflection film that can be deposited over the signal wires without interfering with their electrical function. This thin film structure provides optical protection against reflection while maintaining the electrical connectivity of the underlying metal traces, solving both optical and electrical requirements simultaneously.
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 solution effectively reduces metal reflection, enhances display contrast, and improves the display panel's aesthetic appeal by minimizing bezel width, thereby increasing the screen-to-body ratio and ensuring optimal display performance.
Implementation Method 1
an anti-reflection layer located between the first signal wire layer and the first base... an orthographic projection of the first anti-reflection structure on a plane where the first base is located covers at least part of an orthographic projection of the first signal wire
Data Source
AI summary
Provided are a display panel and a preparation method thereof and a display device. The display panel includes an array substrate, where the array substrate includes a first base, a first signal wire layer located on a side of the first base and an anti-reflection layer located between the first signal wire layer and the first base. The display panel further includes a display region and a non-display region; the first signal wire layer includes a first signal wire located in the display region, and the anti-reflection layer includes a first anti-reflection structure located in the display region and a second anti-reflection structure located in the non-display region. An orthographic projection of the first anti-reflection structure on a plane where the first base is located covers at least part of an orthographic projection of the first signal wire on the plane where the first base is located.