Bridge-Shaped Transition Structures for Stretchable Display Panels
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Solution Overview
Problem
Stretchable display panels experience stress concentration and disconnection issues at the junction of effective and non-effective display areas due to sudden design structure changes, affecting display quality and service life.
Innovation Solution
The display panel design includes island-shaped structures in the effective display area, bridge-shaped structures in the transition area connecting these islands, and a binding member in the non-effective display area, with varying bridge structure widths and densities to distribute stress and enhance tensile strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the display panel uses a sudden structure change at the junction of effective and non-effective display areas, then the device complexity is reduced, but stress concentration occurs causing disconnection
Solution Approach 1:
The patent applies local quality by creating a transition area with bridge-shaped structures that have different mechanical properties than the effective display area. The bridge-shaped structures include through-holes and specific width variations that locally modify the structural characteristics to gradually transition from the effective display area to the non-effective display area, preventing stress concentration at the junction.
Solution Approach 2:
The patent segments the junction area into multiple bridge-shaped structures arranged in arrays, rather than using a single continuous structure. These segmented bridge structures are distributed across the transition area, allowing stress to be distributed across multiple elements rather than concentrated in one location, thereby improving reliability.
2Adaptability or versatility
If the display panel is designed for stretchability, then the adaptability is improved, but stress concentration at the junction causes disconnection
Solution Approach 1:
The patent applies local quality by creating a transition area with bridge-shaped structures that have different mechanical properties than the effective display area. The bridge-shaped structures include through-holes and specific width variations that locally modify the structural characteristics to gradually transition from the effective display area to the non-effective display area, preventing stress concentration at the junction.
Solution Approach 2:
The patent implements beforehand cushioning by designing the bridge-shaped structures with through-holes and varying widths in the transition area before stretching occurs. These pre-designed structural features act as stress distribution elements that cushion and distribute the stress during stretching, preventing disconnection before it can occur.
3Manufacturing precision
If the bridge-shaped structures have uniform width, then the manufacturing precision is improved, but the stress distribution is insufficient
Solution Approach 1:
The patent applies local quality by varying the width of bridge-shaped structures at different locations within the transition area. The width changes from the first end to the second end of each bridge structure, creating local variations that optimize stress distribution while maintaining overall manufacturing feasibility through controlled gradient changes.
Data Source
AI summary
A display panel and a mobile terminal are provided. The display panel has an effective display area and a non-effective display area disposed in sequence. The non-effective display area has a transition area. Two adjacent first island-shaped structures in the effective display area are connected by bridge-shaped structures. The first island-shaped structures and the binding member in the non-effective display area are connected by the bridge-shaped structures in the transition area, and in a direction from the effective display area to the non-effective display area, a width value of the bridge-shaped structures in the transition area gradually increases.