Stretchable Display Panel Signal Routing
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Solution Overview
Problem
Traditional rigid display panels face limitations in meeting the requirements for flexible applications, and existing stretchable display panels suffer from signal line interference due to overlapping portions, leading to reduced display quality and increased thickness.
Innovation Solution
A stretchable display panel design featuring island regions connected by bridge regions, with signal line groups in the same conductive layer arranged in parallel and at intervals to avoid overlapping and interference, and the use of equipotential and reference voltage signal lines to reduce impedance and ensure uniform voltage distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are arranged in overlapping portions to connect island regions, then electrical connection is achieved, but signal interference increases and display quality deteriorates
Solution Approach 1:
The patent transitions from traditional overlapping signal line arrangements to a planar parallel arrangement where multiple signal lines extend along bridge regions without overlapping. This dimensional reorganization eliminates interference while maintaining electrical connectivity between island regions through the bridge regions.
Solution Approach 2:
The display panel is divided into island regions connected by bridge regions, with signal lines segmented to extend along these bridge regions. This segmentation allows signal lines to reach multiple sub-pixels across different island regions without requiring overlapping portions, thus avoiding interference.
2Adaptability or versatility
If multiple conductive layers are used to route signal lines, then connection flexibility increases, but device thickness increases
Solution Approach 1:
Instead of using multiple vertical conductive layers, the patent routes signal lines horizontally along bridge regions within the same conductive layer. This planar routing approach achieves the same connection flexibility without stacking layers, thereby reducing overall panel thickness.
3Area of stationary object
If signal lines are placed closer together to reduce space, then area efficiency improves, but signal interference increases
Solution Approach 1:
Signal lines are segmented into multiple groups that extend along different bridge regions. This segmentation allows lines to be distributed across available space without requiring close proximity, maintaining adequate spacing for signal integrity while efficiently utilizing the display panel area.
Data Source
AI summary
A stretchable display panel has a plurality of island regions and a plurality of bridge regions. The island regions are arranged in an array. Every two adjacent island regions are connected with a bridge region in the bridge regions therebetween. The display panel includes a plurality of sub-pixels and a plurality of signal line groups. At least one sub-pixel is provided in each island region. The signal line groups are located in a same conductive layer. Each signal line group extends along bridge regions to island regions that are connected to the bridge regions. The signal line group includes a plurality of signal lines arranged in parallel and at intervals. Each signal line is electrically connected to sub-pixels in the island regions.