Flexible Display Pixel Structure with Pillar Padding for Impact Resistance
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Solution Overview
Problem
Current flexible displays with pixel structures on plastic substrates fail to withstand external impacts, often cracking during use due to inadequate impact resistance.
Innovation Solution
A pixel structure on a flexible substrate is designed with a padding layer featuring pillars and a pattern that covers the active device, allowing the pillars to absorb external forces and redirect them to the substrate, thereby protecting the conductor electrodes from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible substrate is used to enable flexibility and impact resistance, then flexibility is improved, but the pixel structure becomes vulnerable to cracking under external impact
Solution Approach 1:
The patent introduces a padding layer with pillars positioned between the pixel electrode and the flexible substrate. These padding pillars act as cushioning elements that absorb and distribute external impact forces before they reach the conductor electrodes, preventing cracking while maintaining the flexibility of the overall structure.
Solution Approach 2:
The padding layer serves as an intermediary element between the flexible substrate and the pixel electrode. It mediates the transmission of external forces, converting concentrated impact forces into distributed stresses that the flexible substrate can withstand without causing electrode cracking.
2Reliability
If the pixel structure is made rigid to resist impact, then impact resistance is improved, but flexibility is lost
Solution Approach 1:
The patent applies local quality by making only specific regions (the padding pillar locations) more rigid to resist impact, while the rest of the structure remains flexible. The padding pillars are strategically positioned to provide localized reinforcement without compromising the overall flexibility of the flexible display structure.
Solution Approach 2:
The structure combines different material properties - the flexible substrate provides flexibility, while the padding layer (potentially made of different material composition) provides enhanced impact resistance. This composite approach allows the structure to exhibit both flexibility and improved impact resistance simultaneously.
Data Source
AI summary
A pixel structure including a flexible substrate, an active device, a pixel electrode, a capacitance electrode, a first insulation layer, a second insulation layer, and a padding layer is provided. The pixel electrode is electrically connected to the active device and has pixel electrode openings. The capacitance electrode is disposed overlapping the pixel electrode and has capacitance electrode openings corresponding to the pixel electrode openings. The first insulation layer is disposed between the pixel electrode and the flexible substrate. The second insulation layer is disposed between the pixel electrode and the capacitance electrode. The active device is disposed between the second insulation layer and the flexible substrate. The padding layer includes padding pillars and a padding pattern covering over the active device. The padding pillars are located in the pixel electrode openings respectively. The pixel electrode partially covers the padding pattern and exposes the padding pillars.