Display Electrode Insulating Layer Layout for Trench Connectivity
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Solution Overview
Problem
Existing display devices face challenges in efficiently structuring light emitting areas and non-light emitting areas, leading to potential issues with anode and cathode electrode connectivity and layer discontinuity, which can affect display performance and manufacturing efficiency.
Innovation Solution
A display device design featuring a substrate with light emitting areas and non-light emitting areas, utilizing a first and second insulating layer with trenches and openings, and a passivation layer with different materials, along with an anode and cathode electrodes that are disconnected in specific areas to enhance connectivity and manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If continuous insulating layers are used between substrate and electrodes, then manufacturing process is simplified, but electrode connectivity and layer continuity issues arise affecting display performance
Solution Approach 1:
The patent divides the insulating layer into multiple discrete insulating layers (first insulating layer, second insulating layer, third insulating layer) separated by conductive layers. This segmentation allows each layer to be independently formed and optimized, ensuring proper electrode connectivity while maintaining manufacturing feasibility through standardized sequential processing steps.
Solution Approach 2:
The patent introduces conductive layers as intermediary elements between the insulating layers. These conductive layers serve as mediators that ensure electrical connectivity between electrodes across multiple insulating barriers, resolving the connectivity issue without requiring a single continuous insulating layer that would complicate electrode formation.
2Reliability
If multiple insulating layers with trenches and openings are introduced, then electrode connectivity is improved, but device structure becomes more complex
Solution Approach 1:
The patent segments the insulating structure into multiple discrete layers (first, second, and third insulating layers) with specific trenches and openings in each. This segmentation enables precise control over electrode connectivity paths while maintaining a systematic, repeatable manufacturing process that manages complexity through modular layer formation.
Solution Approach 2:
The patent applies different structural configurations to different regions: continuous insulating layers in light-emitting areas versus layered structures with trenches and openings in non-light-emitting areas. This local differentiation optimizes electrode connectivity where needed while maintaining simplicity in light-emitting regions, reducing overall device complexity.
3Manufacturing precision
If trenches are formed in insulating layers, then manufacturing precision is improved, but manufacturing process time increases
Solution Approach 1:
The patent forms trenches in the first insulating layer before forming the second insulating layer, and forms openings in the second insulating layer before forming the third insulating layer. This preliminary action approach allows subsequent layers to be formed around pre-defined structures, improving precision while enabling parallel processing and reducing total manufacturing time.
Solution Approach 2:
The patent divides trench formation into separate stages corresponding to different insulating layers. Trenches are formed in the first layer, then openings are formed in the second layer, allowing each precision-critical step to be optimized independently while maintaining overall process efficiency through sequential rather than simultaneous formation.
Data Source
AI summary
A display device includes a substrate including light emitting areas and a non-light emitting area proximate to the light emitting areas. Anode electrodes are disposed on the substrate and respectively overlap the light emitting areas. A first insulating layer is disposed between the substrate and the anode electrodes and includes trenches overlapping the non-light emitting area. A second insulating layer is disposed between the first insulating layer and the anode electrodes. The second insulating layer includes first openings respectively overlapping some of the trenches, and fills the remaining trenches.