Deformable Display Panel With Segmented Pillar and Bridge Regions
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Solution Overview
Problem
The existing technologies lack the necessary structures and processes for manufacturing stretchable OLED display panels that can be arbitrarily deformable, which is crucial for meeting the requirements of flexible and wearable display devices.
Innovation Solution
A deformable display panel structure comprising display regions, pillar regions, bridge regions, and aperture regions, with specific layers such as a base layer, stretchable substrate, barrier layer, buffer layer, active layer, and signal lines, where the pillar and bridge regions form spaced structures to facilitate deformation, and the manufacturing method involves layer preparation and etching to create through holes and inverted trapezoidal shapes for the source-drain and anode layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional OLED structure is used, then the manufacturing process is simple, but the display panel cannot be arbitrarily deformed
Solution Approach 1:
The display panel is divided into multiple functional regions: display regions, pillar regions, bridge regions, and aperture regions. This segmentation allows each region to serve specific purposes - display regions for light emission, pillar regions for structural support and signal transmission, bridge regions for connecting components, and aperture regions for deformation flexibility. The segmentation enables the panel to maintain structural integrity while achieving arbitrary deformability.
Solution Approach 2:
The patent introduces a multi-layer three-dimensional structure with layers extending in different directions. The base layer, stretchable substrate, barrier layer, and various functional layers are stacked and extended differently to create spatial complexity. This dimensional approach allows signal lines to route through multiple layers and regions, enabling deformation capability while maintaining electrical connectivity.
2Adaptability or versatility
If the display panel is made stretchable with multiple regions and layers, then arbitrary deformation is achieved, but the manufacturing process becomes complex
Solution Approach 1:
The patent employs preliminary actions in the manufacturing process by pre-defining the multi-region structure and layer configurations before final assembly. The base layer, stretchable substrate, and barrier layer are prepared in advance with their specific extensions and connections established. Signal lines are pre-routed through designated paths in pillar and bridge regions, simplifying the overall manufacturing process despite the complex final structure.
Solution Approach 2:
Different regions of the display panel are assigned different structural qualities and material properties tailored to their specific functions. The pillar regions have reinforced structures for signal transmission, bridge regions have flexible connections for deformation, and aperture regions have optimized structures for flexibility. This local differentiation allows each region to be manufactured with appropriate processes while contributing to the overall deformable functionality.
Data Source
AI summary
A deformable display panel and a manufacturing method thereof are disclosed. The deformable display panel includes display regions, pillar regions, bridge regions, and aperture regions, wherein the pillar regions are disposed around the display regions, and the bridge regions are disposed between the aperture regions and the pillar regions or between the aperture regions; wherein a spaced pillar structure is disposed within each of the pillar regions, and the spaced pillar structure is disposed and spaced apart from the display regions; each of the bridge regions has a bridging structure which is disposed with and spaced apart from the spaced pillar structure.