Display Panel Alignment Marks for Four-Side Folding Bezels
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Solution Overview
Problem
The challenge in display technology is accurately implementing alignment marks for four-surface-folding display panels without increasing the bezel width, as existing methods lack precision in aligning the heat dissipation film and circuit board folding due to the complex geometry of these panels.
Innovation Solution
A display panel design with an alignment mark region in a flat peripheral area, where the film layer is hollowed out to enhance light transmittance and visibility, allowing for precise alignment using cameras, and including metal layers and semiconductor patterns to facilitate accurate positioning without additional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an alignment mark is to be implemented for accurate folding and heat dissipation film attachment, then alignment precision is improved, but the bezel width increases
Solution Approach 1:
The patent creates a local flat region within the peripheral area where the alignment mark is positioned, while the rest of the panel maintains its curved folding structure. This localized flat area provides the necessary space for accurate alignment mark placement without requiring an increase in overall bezel width, thus resolving the contradiction between alignment precision and bezel width.
Solution Approach 2:
The patent utilizes the thickness dimension by hollowing out the film layer at the alignment mark region to create a light-transmissive area. This dimensional approach allows the alignment mark to be visible through the panel structure without occupying additional lateral space, thereby maintaining compact bezel dimensions while achieving precise alignment capability.
2Manufacturing precision
If the film layer is hollowed out to enhance light transmittance for alignment mark visibility, then alignment precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent extracts or removes the film layer material specifically at the alignment mark region to create a hollowed-out light-transmissive area. This selective extraction allows light to pass through the alignment mark, enhancing its visibility for precise alignment, while the rest of the film layer remains intact to maintain its protective and functional properties.
3Manufacturing precision
If a flat region is created for alignment mark placement, then alignment precision is improved, but the area available for other components is reduced
Solution Approach 1:
The patent creates a small localized flat region within the peripheral area specifically for alignment mark placement, while the majority of the panel area remains unaffected and available for other components. This localized approach minimizes the impact on available area while providing the necessary flat surface for precise alignment.
Solution Approach 2:
By utilizing the thickness dimension through hollowing out the film layer, the patent enables alignment mark visibility without consuming additional lateral space. This dimensional approach allows the alignment function to be integrated into the existing panel structure without reducing the area available for other components.
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 enables accurate alignment of the heat dissipation film and circuit board folding on four-surface-folding display panels, improving alignment precision and reducing bezel width by creating a contrast between bright and dark fields for easy identification of alignment marks.
Implementation Method 1
at least one film layer within the alignment mark region is hollowed out
Data Source
AI summary
Provided are a display panel, a manufacturing method thereof, and a display device. The display panel includes an alignment mark region arranged within a flat region of a peripheral region of the display panel. The peripheral region is a region of the display panel other than an active area of the display panel. An alignment mark pattern is arranged within the alignment mark region, and/or at least one film layer within the alignment mark region is hollowed out.