Color Conversion Layer Alignment Structure for Display Panels
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Solution Overview
Problem
Conventional display panels using quantum dot technologies often experience displacement and misalignment of color conversion layers and substrates, leading to optical crosstalk and adverse effects on display quality.
Innovation Solution
A display panel design featuring positioning structures on both the substrate and color conversion layer, which connect correspondingly to ensure precise alignment and prevent misalignment, thereby maintaining the optical integrity of light-emitting and color conversion areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color conversion layers and substrates are attached during production, then the display panel can achieve color conversion and light emission, but displacement and misalignment occur resulting in optical crosstalk
Solution Approach 1:
The patent applies preliminary action by pre-forming positioning structures (protrusions and recesses) on both the substrate and color conversion layer before assembly. These structures are designed in advance to guide precise alignment during the attachment process, preventing misalignment and optical crosstalk before they can occur.
Solution Approach 2:
The positioning structures act as intermediaries between the substrate and color conversion layer. The protrusions on one component fit into corresponding recesses on the other component, serving as mechanical mediators that ensure accurate positioning and prevent direct misalignment during attachment.
2Manufacturing precision
If positioning structures are added to prevent misalignment, then alignment accuracy improves, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the positioning function into separate, dedicated positioning structures (protrusions and recesses) distinct from the light-emitting and color conversion functional areas. This segmentation allows the positioning function to be implemented independently without interfering with the primary display functions, maintaining simplicity while achieving precision.
Solution Approach 2:
The positioning structures are implemented locally at specific positions (between adjacent light-emitting areas) rather than across the entire surface. This local implementation provides necessary alignment precision only where critical, while leaving the majority of the surface area dedicated to light emission and color conversion, thus minimizing overall structural complexity.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a substrate and a color conversion layer. The substrate includes a first side surface and a second side surface disposed opposite to each other. A plurality of light-emitting areas are arranged in parallel on the first side surface, and a first positioning structure is disposed on the first side surface and is spaced apart from the light-emitting areas. A color conversion layer is disposed opposite to the first side surface of the substrate and includes a plurality of color conversion areas arranged in parallel and disposed corresponding to the light-emitting areas. A second positioning structure is disposed on a side of the color conversion layer facing the first side surface and arranged corresponding to the first positioning structure. The second positioning structure is connected to the first positioning structure.