Flexible Display Impact Protection Using Spacer Cushioning
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Solution Overview
Problem
Flexible display devices face challenges in maintaining reliability against impacts due to their foldable and bendable nature, which can lead to defects such as bright spots on the display panel.
Innovation Solution
The display device incorporates an anti-reflection layer with spacers of varying heights and an impact protection layer filled with gas or liquid crystal, providing a cushioning effect to absorb impacts and reduce damage to the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If flexible display devices are made foldable and bendable, then convenience of use is improved, but reliability against impact deteriorates
Solution Approach 1:
The patent applies beforehand cushioning by introducing an impact protection layer containing spacers and cushioning material (gas or liquid crystal) between the display panel and external environment. This cushioning structure is pre-configured to absorb impact forces before they reach the fragile display panel, thereby maintaining reliability against impact while preserving the foldable design's convenience.
2Reliability
If an impact protection layer is added to improve reliability, then resistance to impact is improved, but device complexity increases
Solution Approach 1:
The patent employs flexible shells and thin films by using a thin impact protection layer with spacers and fluid-filled spaces instead of a thick rigid protective structure. This approach provides impact resistance while maintaining the overall thin and flexible profile of the display device, thereby limiting the increase in device complexity.
3Reliability
If spacers of varying heights are used to absorb impact, then cushioning effect is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by using spacers of varying heights positioned at different locations within the impact protection layer. Taller spacers are placed in regions requiring greater cushioning, while shorter spacers are used in areas needing less protection. This localized differentiation optimizes the cushioning effect while managing manufacturing precision requirements through functional zoning.
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 enhances the display device's resistance to impacts, minimizing bright spot defects and improving the durability of the flexible display panel.
Implementation Method 1
an impact protection layer on the anti-reflection layer and including a plurality of spacers
Implementation Method 2
the impact protection layer may further include a gas filled into a space between the plurality of spacers
Implementation Method 3
the arrangement direction of the liquid crystal may be changeable by an electric field formed between the first liquid crystal electrode and the second liquid crystal electrode
Data Source
AI summary
A display device includes a display panel having a light-emitting region, an anti-reflection layer on the display panel, an impact protection layer on the anti-reflection layer and including a plurality of spacers, and a first window on the impact protection layer.