Foldable Display Module with Elastic Folding-Area Support
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Solution Overview
Problem
Foldable display devices are vulnerable to damage in the folding area due to external impacts, leading to display defects when pressure is applied.
Innovation Solution
A display module design incorporating a first and second support portion with an elastic portion between them, which is compressed to support the folding area, preventing damage from external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid support structure is used to strengthen the folding area, then structural strength is improved, but flexibility and foldability deteriorate
Solution Approach 1:
The support structure changes its mechanical properties dynamically: it maintains rigidity when the display is unfolded to provide structural strength, and becomes flexible when folded to allow repeated folding operations without damage
Solution Approach 2:
The support structure transitions from a static rigid design to a dynamic system that adapts its properties based on the display state (folded vs. unfolded), enabling both strength and flexibility requirements to be met
2Adaptability or versatility
If the display module is made flexible to enable folding, then adaptability is improved, but vulnerability to external impact worsens
Solution Approach 1:
The support structure is selectively positioned under the folding area where vulnerability to impact is highest, providing localized reinforcement without compromising the overall flexibility needed for folding operations
Solution Approach 2:
The support structure is pre-positioned to protect the folding area before external impacts occur, cushioning against potential damage from pressure or impact during both folded and unfolded states
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 elastic portion supports the folding area effectively, preventing display defects by maintaining structural integrity under pressure.
Implementation Method 1
an elastic portion disposed between the first sub-support portion and the second sub-support portion, and configured to support the folding area of the display portion when the elastic portion is compressed by each of the first sub-support portion and the second sub-support portion
Data Source
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AI summary
A display module includes: a display portion including a first area, a second area spaced apart from the first area, and a folding area disposed between the first area and the second area; a first support portion disposed under the display portion and that supports the display portion in the first area, the second area, and the folding area; a second support portion disposed under the first support portion, and including a first sub-support portion that supports the first area and a second sub-support portion that supports the second area and spaced apart from the first sub-support portion; and an elastic portion disposed between the first sub-support portion and the second sub-support portion, and that supports the folding area when the elastic portion is compressed by each of the first sub-support portion and the second sub-support portion in a state in which the display portion is unfolded.