Foldable Display Support Structure for Crack-Resistant Bending
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display modules that are bent to reduce non-display regions are prone to cracking due to bending stress, and existing solutions fail to adequately address this issue, resulting in vulnerability to impact and structural damage.
Innovation Solution
A display device design featuring a support plate with spaced glass substrates and a polymer film with a curved portion that overlaps the bending region, providing additional support and stress distribution when the module is bent, thereby preventing cracks and enhancing impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display module is bent to reduce the non-display region, then the device size is reduced, but cracks occur due to bending stress
Solution Approach 1:
A polymer film is pre-installed beneath the bending region of the display module to provide cushioning support before bending occurs. This polymer film absorbs and distributes the bending stress, preventing cracks from forming in the first place during the bending process.
Solution Approach 2:
The support structure combines a polymer film with glass substrates to create a composite system. The polymer film provides flexibility and stress distribution, while the glass substrates provide structural support, together enabling both bending capability and crack resistance.
2Volume of moving object
If the display module is bent to reduce the non-display region, then the device size is reduced, but impact resistance deteriorates
Solution Approach 1:
The polymer film is pre-positioned beneath the bending region to provide cushioning support before impact occurs. When impact happens, this pre-positioned cushioning layer absorbs and distributes the impact force, preventing stress concentration that would lead to cracks or damage.
Solution Approach 2:
The polymer film changes its mechanical parameters (softness, elasticity) in response to applied stress. Under normal conditions it remains flexible to allow bending, but under impact it becomes more rigid to distribute force, effectively adapting its properties to the loading condition.
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 proposed design effectively prevents cracks in the bending region and improves the impact resistance of the display device by distributing stress and providing additional support through the polymer film's curvature, ensuring the module's structural integrity during bending and exposure to external impacts.
Implementation Method 1
a curved portion, which extends from the first flat portion and overlaps the bending region, and a second flat portion which extends from the curved portion... in the first mode, the curved portion is bent to have a curvature
Data Source
AI summary
A display device includes a display module, a support plate disposed below the display module, and a polymer film disposed below the support plate. The display module may include first and second non-bending regions, and a bending region therebetween. The support plate includes first and second glass substrates spaced apart from each other in one direction perpendicular to a thickness direction. The polymer film may include a first flat portion, a curved portion, which extends from the first flat portion and overlaps the bending region, and a second flat portion which extends from the curved portion and is spaced apart from the first flat portion. A state, in which the display module is bent such that the first non-bending region overlaps the second non-bending region, is defined as a first mode, and in the first mode, the curved portion is bent to have a curvature.