Foldable Display Substrate Protrusion Layout for Stress Deformation
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Solution Overview
Problem
Electronic devices with foldable or rollable functions are prone to deformation due to internal or external stress, which can cause damage to their components.
Innovation Solution
The implementation of a substrate with a specific arrangement of light emitting elements and supporting elements, including protrusions, which are strategically positioned to mitigate deformation by distributing stress evenly across the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the electronic device is made thin to achieve foldable or rollable functions, then the device can achieve foldable or rollable functions, but the device is subjected to deformation under stress
Solution Approach 1:
The substrate is divided into multiple regions with different protrusion arrangements. First protrusions are arranged in a first pattern while second protrusions are arranged in a second pattern, creating segmented stress distribution zones that prevent uniform deformation across the thin device structure.
Solution Approach 2:
Different regions of the substrate are given different structural characteristics through the first and second protrusions with different patterns and distances from the circuit board region. This local differentiation allows specific areas to have enhanced stress resistance while maintaining overall thinness.
2Device complexity
If stress is concentrated in one area, then the device structure is simpler, but the electronic components may be damaged
Solution Approach 1:
The stress distribution is segmented into multiple zones created by first protrusions and second protrusions with different arrangements. This segmentation prevents stress concentration in any single area, protecting electronic components while maintaining a relatively simple overall device structure.
Solution Approach 2:
The protrusions act as intermediary structural elements between the external stress and the electronic components. By positioning protrusions at specific distances from the circuit board region, they mediate stress distribution to prevent direct stress transmission to sensitive components.
3Stability of the object's composition
If protrusions are arranged close to the circuit board region, then the stress distribution is more effective, but the light emitting elements may be affected
Solution Approach 1:
The first protrusions are positioned at a first distance from the circuit board region while second protrusions are positioned at a second distance, creating local quality variations in stress distribution. This allows effective stress management in certain areas while maintaining safe distances from light emitting elements in other areas.
Solution Approach 2:
The arrangement of first protrusions and second protrusions creates an asymmetric stress distribution pattern relative to the circuit board region. This asymmetric design allows optimized stress distribution effectiveness while ensuring adequate protection for light emitting elements through differential positioning.
Data Source
AI summary
An electronic device, including a substrate, a plurality of light emitting elements, two adjacent first protrusions, another two adjacent first protrusions and two adjacent second protrusions. The plurality of light emitting elements are disposed on a first surface of the substrate. The two adjacent first protrusions are disposed on the first surface and separated by a first distance. The another two adjacent first protrusions are disposed on the first surface and separated by a second distance, wherein at least one of the plurality of light emitting elements is disposed between the another two adjacent first protrusions. The two adjacent second protrusions and the two adjacent first protrusions are respectively disposed on opposite sides of the substrate. The first distance is less than the second distance, and at least one of the two adjacent second protrusions is not overlapped with the two adjacent first protrusions.