Flexible Display Screen Openings for Curved-Corner Stress Relief
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Solution Overview
Problem
The challenge of attaching a flexible display screen with a curved corner is complicated by increased stress, leading to potential cracking and wrinkling, especially in the corner arc-shaped region.
Innovation Solution
A flexible display screen design with a corner bending portion featuring openings and a deformation region, where openings are strategically arranged to absorb tensile stress, reducing the risk of cracking and wrinkling, and a method for assembling the screen using carrier films.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the depth of the corner arc-shaped region is increased to achieve a more curved corner attachment, then the curvature of the corner is improved, but the stress on the flexible display screen becomes increasingly complicated and severe
Solution Approach 1:
The patent introduces a stress relief structure with multiple through-holes in the corner bending portion of the flexible display screen. These through-holes create a porous-like structure that allows stress to be distributed and relieved throughout the corner region, preventing stress concentration while maintaining the desired curved shape for attachment.
Solution Approach 2:
The corner bending portion is segmented into multiple regions by dividing it into a first bending portion, a second bending portion, and a corner bending portion. This segmentation allows each region to handle different stress patterns and deformation requirements, with the corner bending portion specifically designed with through-holes to manage the most severe stress concentrations.
2Adaptability or versatility
If the corner bending portion is made more flexible to accommodate curved attachment, then the adaptability to forming die is improved, but the risk of cracking and wrinkling increases
Solution Approach 1:
The stress relief structure with multiple through-holes in the corner bending portion creates a porous-like configuration that enhances flexibility and stress distribution. This allows the corner to adapt to the forming die's curved surface while the through-holes prevent stress concentration that would lead to cracking and wrinkling.
Solution Approach 2:
The patent designs the corner bending portion with predetermined through-holes that act as stress relief features before the actual attachment process. These pre-positioned holes cushion the stress that will occur during bending and attachment, preventing damage before it happens.
3Stress or pressure
If openings are added to the corner bending portion to relieve stress, then the stress distribution is improved, but the structural complexity increases
Solution Approach 1:
The stress relief structure uses a pattern of through-holes that creates a porous-like appearance and function. This approach achieves effective stress distribution through a relatively simple geometric pattern, avoiding the need for complex internal structures or additional components.
Solution Approach 2:
The patent optimizes parameters such as the number, size, shape, and distribution of the through-holes to achieve effective stress relief. By carefully controlling these parameters, the structure achieves good stress distribution while maintaining manufacturing feasibility and avoiding excessive complexity.
Data Source
AI summary
A flexible display screen includes a main display portion, a first bending portion, a second bending portion and a corner bending portion. The main display portion includes a first side, an arc-shaped side and a second side that are connected in sequence. The first bending portion is located on a side of the main display portion where the first side is located, and is connected to the first side. The second bending portion is located on a side of the main display portion where the second side is located, and is connected to the second side. The corner bending portion is located on a side of the main display portion where the arc-shaped side is located, and is connected to the arc-shaped side. A plurality of openings are disposed in the corner bending portion, and face a bending direction of the corner bending portion.


