Double-Layered Display Substrate Impact Absorption
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Solution Overview
Problem
Thin display devices are prone to breakage and product failure due to their slimness, which compromises their durability and reliability, especially when subjected to external impacts.
Innovation Solution
A display panel design featuring a double-layered substrate structure with a glass material for the first substrate layer and a polymer material for the second substrate layer, where the second substrate layer has a lower thermal transfer coefficient and is strategically positioned to prevent damage to the glass layer, along with a buffer layer made of inorganic material to enhance crystal growth and reduce contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display device is made thinner to reduce weight and volume, then portability and mobility are improved, but breakage and product failure occur more frequently
Solution Approach 1:
The substrate is divided into two distinct layers: a first substrate layer (glass material) providing structural support and a second substrate layer (polymer material) providing flexibility and impact absorption. This segmentation allows each layer to perform its specialized function, enabling thin design while maintaining reliability.
Solution Approach 2:
The patent employs a composite substrate structure combining glass material and polymer material in a layered configuration. The glass layer provides rigidity and structural integrity, while the polymer layer provides ductility and impact resistance, creating a composite material system that overcomes the limitations of single-material substrates.
2Ease of manufacture
If a single-layer glass substrate is used, then manufacturing is simple, but the substrate is prone to breakage under external impact
Solution Approach 1:
The polymer layer is positioned between the external environment and the glass substrate to provide beforehand cushioning. When external impact occurs, the ductile polymer layer absorbs and dissipates the impact energy before it can reach the brittle glass substrate, preventing breakage while maintaining manufacturing simplicity.
3Quantity of substance
If the second substrate layer area is reduced to minimize glass usage, then material cost decreases, but edge protection is compromised
Solution Approach 1:
The second substrate layer is strategically positioned to extend beyond the first substrate layer edges in specific regions, providing localized quality enhancement. This ensures that the polymer material provides necessary edge protection and impact absorption where most needed, while minimizing overall glass material usage in less critical areas.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents breakage and product failure by providing a ductile polymer layer to absorb external impacts and a buffer layer that aids in crystal growth, reducing stain generation and improving the overall durability and efficiency of the display panel.
Implementation Method 1
a second substrate layer contacting the first substrate layer and comprising a polymer material... providing a ductile polymer layer to absorb external impacts
Implementation Method 2
A thermal transfer coefficient of the second substrate layer may be smaller than a thermal transfer coefficient of the buffer layer... The buffer layer may comprise an inorganic material
Data Source
AI summary
A display panel includes: a substrate including a first substrate layer which includes a glass material and a second substrate layer contacting the first substrate layer and which includes a polymer material; a thin film transistor disposed on the substrate; and a light emitting element disposed on the thin film transistor.