Foldable Display Shield Patterns for Impact Resistance
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Solution Overview
Problem
The durability of foldable display devices is compromised due to repeated folding and unfolding, leading to reduced impact resistance and potential degradation of driving characteristics.
Innovation Solution
A foldable display device design featuring a larger second shield pattern in the folding region and a smaller first shield pattern in the non-folding region, along with strategically placed openings in the plate bottom, enhances durability and maintains driving characteristics by minimizing parasitic capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a shield pattern is formed in the folding region, then impact resistance is improved, but parasitic capacitance increases and driving characteristics deteriorate
Solution Approach 1:
The patent applies different shield pattern configurations to different regions of the display device. In the folding region, a shield pattern is formed to provide impact resistance, while in the non-folding region, no shield pattern is formed to minimize parasitic capacitance. This localized approach allows each region to have the properties needed for its specific function.
Solution Approach 2:
The display device is divided into two distinct regions: a folding region and a non-folding region. The shield pattern is segmented to appear only in the folding region, allowing the device to have differentiated protection strategies for different areas based on their operational requirements.
2Reliability
If the shield pattern area is increased to improve impact resistance, then durability is improved, but parasitic capacitance increases
Solution Approach 1:
The shield pattern is strategically placed only in the folding region where impact resistance is most needed, rather than covering the entire display area. This localized placement provides durability improvement in the critical folding region while minimizing the overall parasitic capacitance generated by the shield pattern.
3Reliability
If a shield pattern is formed to enhance impact resistance, then durability is improved, but device complexity increases
Solution Approach 1:
The shield pattern is implemented only in the folding region rather than uniformly across the entire display device. This selective placement reduces the overall structural complexity and material usage while still providing the necessary durability improvement in the region most susceptible to impact damage.
Data Source
AI summary
A foldable display device includes a display panel including a plurality of sub-pixels and having a first shield pattern in a non-folding region and a second shield pattern in a folding region; a cover window over the display panel, wherein an area of the second shield pattern is larger than an area of the first shield pattern.