Flexible display panel including island structures connected and stretched through electrical connecting structures, manufacturing method thereof, and display terminal
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Solution Overview
Problem
The stretching ratio of existing stretchable display panels is limited due to high-resolution requirements, restricting the area that can be hollowed out and preventing further improvement.
Innovation Solution
A flexible display panel design featuring island structures with electrical connecting structures and a flexible adhesive layer that allows for a distance variation between island structures from 10% to 20% when stretched, using materials like PDMS and thermoplastic hot melt adhesive to maintain overall stretching volume while increasing the stretching area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display panel uses high-resolution requirements, then the display quality is improved, but the area that can be hollowed out is limited, making the stretching ratio small
Solution Approach 1:
The display panel is divided into multiple island structures (first island structure, second island structure, etc.) separated by flexible adhesive layers. Each island contains light-emitting units arranged in matrices, allowing independent stretching of each segment while maintaining overall display coherence. This segmentation enables the display to achieve both high resolution within each island and significant stretching ratio across the entire panel.
2Ease of operation
If the flexible layer is hollowed out in a patterned design, then the flexibility is improved, but the area of perforating is limited, making the stretching ratio unable to be further improved
Solution Approach 1:
The invention transitions from two-dimensional hollowing patterns to three-dimensional island structures separated by flexible adhesive layers. The flexible adhesive layers extend vertically between islands, creating a multi-layered structure that allows stretching in multiple directions and dimensions, significantly increasing the stretching ratio beyond what conventional 2D hollowing can achieve.
Solution Approach 2:
Flexible adhesive layers are used to connect and separate the island structures. These thin flexible films allow the islands to move relative to each other during stretching while maintaining structural integrity. The flexible adhesive layers act as compliant connectors that enable large deformation ratios without breaking the display structure.
3Adaptability or versatility
If the distance between adjacent island structures is reduced in the unstretched state, then the stretching area is increased, but the manufacturing precision requirements are increased
Solution Approach 1:
The invention optimizes the distance parameters between adjacent island structures to fall within a specific range (10-20 times the thickness of the flexible adhesive layer). This parameter optimization allows the islands to be positioned close enough to maximize stretching area but not so close as to create excessive manufacturing difficulty. The standardized parameter range makes the manufacturing process more controllable and repeatable.
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 solution enhances the stretching ratio of the flexible display panel by up to 20%, improving its flexibility and adaptability without compromising the overall volume.
Implementation Method 1
a first flexible adhesive layer filled between the plurality of island structures, and the first flexible adhesive layer covering the plurality of island structures; wherein when the flexible display panel is in an unstretched state, a distance between adjacent two of the island structures is a first distance; when the flexible display panel is in a stretched state, the distance between the adjacent two of the island structures is a second distance
Data Source
AI summary
A flexible display panel, a manufacturing method thereof, and a display terminal are provided in the present application. The flexible display panel includes a plurality of island structures, a plurality of electrical connecting structures, and a first flexible adhesive layer. The first flexible adhesive layer is filled between the plurality of island structures and covers the plurality of island structures. A ratio of a difference between a second distance of adjacent two of the island structures in a stretched state and a first distance in an unstretched state to the first distance ranges from 10% to 20%.