Curved Display Packaging Substrate Splice Blocks
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Solution Overview
Problem
Curved-surface OLED display devices face issues with cracking and breakage due to insufficient flexibility of ultra thin glass packaging substrates during bending, leading to manufacturing challenges and reduced yield.
Innovation Solution
The use of a packaging substrate with multiple splice blocks concatenated by an adhesive material, which disperses deformation energy across independent blocks, reducing the energy each block must absorb and preventing cracks during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If ultra thin glass is used as packaging substrate to reduce thickness, then the substrate becomes thinner and more flexible, but the substrate lacks sufficient flexibility and easily cracks when bent
Solution Approach 1:
The packaging substrate is divided into multiple independent splice blocks (first splice block, second splice block, third splice block, fourth splice block) that are concatenated together. This segmentation allows each block to independently absorb deformation energy during bending, preventing cracks from propagating across the entire substrate while maintaining overall structural integrity.
2Strength
If a single continuous substrate is used to maintain structural integrity, then the substrate remains strong, but it cannot be bent into curved surface without cracking
Solution Approach 1:
The substrate is segmented into multiple splice blocks that can independently deform during bending. This allows the overall structure to adapt to curved surfaces while each individual block maintains its strength and resists cracking.
Solution Approach 2:
The packaging substrate is constructed as a composite structure combining multiple glass splice blocks with adhesive material joints. This composite design provides both the strength of glass and the flexibility needed for curved surface formation.
3Ease of operation
If the substrate is made thinner to improve flexibility, then bending becomes easier, but the substrate becomes more prone to breaking
Solution Approach 1:
By dividing the thin substrate into multiple splice blocks, the structure maintains thinness for ease of bending while the segmented design prevents crack propagation. Each block can deform independently, absorbing stress that would otherwise cause breakage in a continuous thin substrate.
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
This approach effectively prevents cracking and breakage of the packaging substrate during the formation of curved-surface display panels, enhancing the manufacturing process and improving yield by distributing deformation energy across multiple blocks.
Implementation Method 1
the adjacent splice blocks are concatenated to each other by an adhesive material
Data Source
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AI summary
The present disclosure relates to the field of display technology, and provides a packaging substrate, a display panel and a curved-surface display panel, so as to prevent the occurrence of cracks at the packaging substrate during the formation of the curved-surface display panel by bending the display panel, thereby to prevent the packaging substrate from being broken. The packaging substrate includes a base which has a plurality of splice blocks, and the adjacent splice blocks are concatenated to each other by an adhesive material. The present disclosure is used to manufacture the packaging substrate, the display panel including the packaging substrate and the curved-surface display panel.