Torsional Structures in Stretchable Display Substrates
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Solution Overview
Problem
Existing stretchable display substrates experience Z-axis deformation and display defects when subjected to large stretching forces, affecting the normal display of stretchable display panels.
Innovation Solution
A display substrate design featuring a plurality of display islands connected by connection parts with torsional structures between them, allowing for stretchability while minimizing excessive deformation by incorporating torsional structures with specific shapes and arrangements that enhance the substrate's ability to handle large stretching forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stretching force is increased to enhance substrate flexibility, then the bendability and portability of the display device are improved, but Z-axis deformation occurs affecting display quality
Solution Approach 1:
The substrate is divided into multiple connection parts with openings between them, allowing localized deformation in each opening region while maintaining overall display integrity. This segmentation enables the substrate to stretch without causing Z-axis deformation in the display areas.
Solution Approach 2:
The torsional structures are designed to deform primarily in the X-Y plane rather than allowing Z-axis deformation, redirecting the deformation to a different dimensional plane that does not affect display quality.
2Adaptability or versatility
If connection parts are made more flexible to allow stretching, then the substrate's stretchability is enhanced, but excessive deformation occurs under large stretching forces
Solution Approach 1:
The connection parts are designed with torsional structures that dynamically adjust their deformation characteristics based on the applied stretching force, providing flexibility when needed and stability when the stretching force becomes too large.
Solution Approach 2:
The torsional structures have specific aspect ratios (width-to-height ratio of 1:2 to 1:8) that optimize their mechanical properties, allowing them to provide appropriate resistance to deformation while maintaining stretchability under normal operating conditions.
3Reliability
If torsional structures are added to suppress deformation, then display quality under stretching is improved, but the device complexity increases
Solution Approach 1:
The torsional structures are integrated directly into the connection parts as a single piece, combining the connection function and the deformation control function into one unified structure, thereby reducing overall device complexity.
Solution Approach 2:
The connection parts serve multiple functions: they connect adjacent display islands, provide stretchability through torsional deformation, and suppress excessive deformation through their structural design, eliminating the need for separate components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The torsional structure design effectively suppresses Z-axis deformation and maintains a good display effect even under significant stretching, preventing display defects and enhancing the overall stretchability of the substrate.
Implementation Method 1
the torsional structure is stretchable in a direction in which it is connected with the two connection parts
Data Source
AI summary
The present disclosure provides a display substrate, a display panel and a display device, and belongs to the field of display technology. The display substrate includes a plurality of display islands and a plurality of connection parts; any two adjacent display islands are connected through one of the plurality of connection parts; the plurality of connection parts define a plurality of openings of a base substrate of the display substrate; at least part of the plurality of openings is provided therein with a torsional structure, the torsional structure is connected between two connection parts of connection parts defining the opening in which the torsional structure is located, the two connection parts extending in substantially a same direction; and the torsional structure is stretchable in a direction in which it is connected with the two connection parts.