Display Panel Alignment Marks for Curved Edge Film Lamination
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Solution Overview
Problem
Existing display technologies face challenges in accurately aligning and laminating heat dissipation films on four-sided curved edge display panels without enlarging the bezel, due to the difficulty in providing precise alignment markings on such complex surfaces.
Innovation Solution
The display panel incorporates alignment mark regions in the flat redundant driving circuit region, where electrode layers are hollowed out or filled up to create distinct light transmittance or reflectance contrasts, allowing for accurate alignment without enlarging the bezel, and these regions are used to align and laminate the heat dissipation film and encapsulation cover plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If alignment marks are added to curved edge display panels, then alignment accuracy improves, but bezel area increases
Solution Approach 1:
The patent creates alignment mark regions with distinct local properties by hollowing out or filling electrode layers in specific areas. These regions have different light transmittance or reflectance compared to surrounding areas, enabling accurate alignment identification without expanding the overall bezel area. The alignment marks are localized to specific regions rather than requiring general bezel enlargement.
2Manufacturing precision
If electrode layers are hollowed out or filled to create alignment marks, then alignment precision improves, but device complexity increases
Solution Approach 1:
The patent combines the alignment mark formation process with the existing electrode layer structure. By hollowing out or filling electrode layers that are already part of the display panel construction, the alignment marks are created as an integrated feature rather than as separate additional components. This merging approach reduces overall device complexity while achieving precise alignment capability.
3Ease of manufacture
If redundant driving circuits are placed in flat regions, then alignment mark creation becomes feasible, but circuit layout complexity increases
Solution Approach 1:
The patent makes the redundant driving circuit region serve multiple functions: it acts as both a functional circuit area and as the location for creating alignment marks. The flat region housing the redundant circuits is utilized dual-purpose, allowing alignment mark formation without requiring separate dedicated space. This multi-functionality approach simplifies the overall layout by eliminating the need for separate alignment mark areas.
Data Source
AI summary
A display panel, a method for manufacturing the same, a display device and a method for manufacturing the same are provided. The display panel includes a display region and a peripheral region arranged on a substrate, and further includes multiple active driving circuits and multiple redundant driving circuits. At least one active driving circuit is electrically connected to at least one of multiple pixel units, and each redundant driving circuit includes at least one electrode layer arranged on the substrate. The peripheral region includes a flat region and a curved region, at least part of the redundant driving circuits are located in a flat redundant driving circuit region included in the flat region. The flat redundant driving circuit region includes at least two alignment mark regions. In the alignment mark regions, at least one electrode layer is hollowed out, and/or at least one electrode layer is filled up.