Stretchable Display Link Layout for Uniform Image Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current stretchable display devices suffer from non-uniform image quality due to varying resistances in link lines caused by differences in length, and they lack durability.
Innovation Solution
A stretchable display device design incorporating rigid and soft portions, with link lines featuring high and low resistance links, including curved parts, to maintain uniform signal transmission and improve durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If link lines are designed with different lengths to connect pixels and driver circuit pads, then the display area can be expanded, but the resistance of link lines becomes non-uniform causing image quality deterioration
Solution Approach 1:
The patent applies local quality by differentiating link lines into high resistance links and low resistance links based on their positions. Link lines closer to the driver circuit are designed as low resistance links, while those farther away are designed as high resistance links. This localized differentiation compensates for the resistance variations caused by different link line lengths, ensuring uniform signal transmission across the expanded display area.
2Adaptability or versatility
If the display device is made stretchable to improve flexibility, then adaptability is enhanced, but durability decreases
Solution Approach 1:
The patent segments the display device into rigid portions (including pixels and high resistance links) and soft portions (including low resistance links). This segmentation allows the soft portions to be stretched and deformed while the rigid portions maintain their structural integrity. The segmented design enables the display to achieve stretchability and adaptability without compromising overall durability, as each segment can handle mechanical stress appropriately.
Data Source
AI summary
A stretchable display device includes a first substrate including a display area and a non-display area. A plurality of rigid portions are provided in the display area and spaced apart from each other in a first direction and a second direction and a soft portion is provided between adjacent rigid portions. A link area is in the non-display area and a plurality of link lines are in the link area. A second substrate is disposed over the first substrate. At least one link line includes a high resistance link and a low resistance link with each of the high resistance link and the low resistance link including at least one curved part and at least one straight part. A ratio of length to straight line of the high resistance link is greater than a ratio of length to straight line of the low resistance link.