Display Module Pixel Layout for Edge Shock Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display modules with inorganic light emitting diodes are susceptible to damage from physical shocks during manufacturing, particularly at the edges of the substrate, leading to potential disconnection of data wirings and image noise due to the proximity of pixel circuits and light emitting elements to the edges.
Innovation Solution
The pixel circuits and data wirings are strategically positioned further from the edges of the substrate than the light emitting elements, and the use of multiple layers with distinct metal wirings and connection wirings helps to minimize damage from external shocks by distributing the stress and maintaining connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pixel circuits and data wirings are positioned close to the edges of the substrate, then the display module can achieve higher pixel density and better utilization of substrate area, but the risk of damage from physical shocks during manufacturing increases
Solution Approach 1:
The patent applies local quality by creating different spatial zones on the substrate with different functional characteristics. The edge regions are designed with enhanced protection features (protective structures, different material properties) compared to the central regions, allowing the display module to maintain high pixel density in safe zones while providing localized shock resistance at vulnerable edge areas.
2Reliability
If pixel circuits are positioned further from the edges of the substrate, then damage from physical shocks during manufacturing is reduced, but the utilization of substrate area decreases
Solution Approach 1:
The patent resolves the spatial conflict by introducing additional dimensional considerations - specifically by utilizing the vertical dimension through multi-layer protective structures and by optimizing the horizontal layout to create protected zones. This allows the display module to maintain high area utilization while providing sufficient distance from edges for shock protection.
3Device complexity
If data wirings are positioned close to the edges of the substrate, then the connection between pixel circuits and substrate electrode pads is simplified, but the risk of wiring disconnection during manufacturing increases
Solution Approach 1:
The patent implements beforehand cushioning by providing protective structures and design margins for data wirings before they are exposed to manufacturing shocks. The wirings are routed through protected zones and reinforced with protective layers that absorb or deflect shock forces, preventing disconnection while maintaining routing simplicity.
Data Source
AI summary
A display module includes a substrate, a first pixel circuit, a first light emitting element, a second pixel circuit and a second light emitting element. The first pixel circuit is configured to control the first light emitting element. The first pixel circuit is located inwardly from an edge of the substrate with respect to the first light emitting element.