Curved Display Insulating Layer Openings for Crack Relief
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Solution Overview
Problem
Display apparatuses with curved structures face stress and strain issues, leading to cracks in specific layers during bending, which compromises their reliability and durability.
Innovation Solution
A display apparatus design featuring a display layer with light-emitting diodes, a first insulating layer with openings between adjacent diodes, and a second insulating layer with openings spaced apart from the first, allowing for stress relief without reducing the thickness of critical layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel and cover window are bent to achieve curved structure, then the display apparatus can display images on curved sides or corners, but cracks occur in specific layers due to strong stress and high strain
Solution Approach 1:
The patent divides the insulating layer into multiple segments by forming openings (through-holes or recesses) within it. These openings segment the continuous insulating material, allowing stress to be distributed and relieved at the opening boundaries during bending, preventing crack propagation while maintaining the curved structure capability
Solution Approach 2:
The insulating layer is designed with a porous structure containing multiple openings. This porous configuration provides stress relief pathways during bending operations, enabling the display apparatus to achieve curved structures without causing cracks in the insulating layer or adjacent layers
2Stress or pressure
If the thickness of the insulating layer is reduced to relieve stress, then stress concentration is decreased, but the protective and insulating properties are compromised
Solution Approach 1:
The patent applies local quality by creating openings only in specific regions of the insulating layer where stress concentration occurs during bending, while maintaining the full thickness of the insulating layer in other regions. This localized modification relieves stress at critical points without compromising the overall protective and insulating properties of the layer
Data Source
AI summary
A display apparatus includes a display layer including a plurality of light-emitting diodes, a first insulating layer disposed on the display layer and including a first opening disposed in a gap between two light-emitting diodes adjacent to each other among the plurality of light-emitting diodes, and a second insulating layer disposed on the first insulating layer and including a second opening spaced apart from the first opening.