Foldable Display Panel Reinforcement for Unfolded Flatness
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Solution Overview
Problem
Display devices with foldable panels can provide distorted images when a folded area is visible, due to the varying flatness of the display panel.
Innovation Solution
A display device with a foldable display panel is designed to include a reinforcing member comprising a first and second layer, with open areas and an auxiliary layer, supporting the panel and incorporating a digitizer, to maintain a flat surface while unfolded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foldable display panel is used to enable folding functionality, then adaptability is improved, but the display flatness deteriorates when unfolded
Solution Approach 1:
The reinforcing member is constructed with a nested multi-layer structure where the first reinforcing member layer and second reinforcing member layer are inserted into each other, creating a integrated support system that maintains panel flatness while allowing folding
Solution Approach 2:
The reinforcing member combines multiple materials including metal, glass reinforced fiber, carbon reinforced fiber, silicon-based polymer, urethane-based polymer, aramid-based polymer, and elastomer to achieve both structural support and flexibility for folding while maintaining display flatness
2Strength
If a solid reinforcing member is used to support the display panel, then structural strength is improved, but device complexity increases
Solution Approach 1:
The reinforcing member is divided into multiple functional layers including a first reinforcing member layer and a second reinforcing member layer with different material compositions and functions, allowing each layer to contribute specifically to structural support while maintaining overall simplicity
Solution Approach 2:
The reinforcing member features open areas distributed at constant intervals that provide localized flexibility and stress relief points, allowing the structure to maintain overall strength while reducing complexity through strategic material distribution
3Weight of moving object
If the reinforcing member has open areas to reduce weight, then weight is reduced, but structural strength deteriorates
Solution Approach 1:
Open areas are strategically positioned at constant intervals in the reinforcing member to create localized flexibility zones that reduce weight while the surrounding solid material maintains overall structural support strength
Solution Approach 2:
The use of high-strength materials such as metal, glass reinforced fiber, and carbon reinforced fiber in the reinforcing member allows for the inclusion of open areas while maintaining sufficient structural strength to support the display panel
Data Source
AI summary
A display device includes a foldable display panel, a reinforcing member disposed in one surface of the display panel and that supports an entire surface of the display panel, and a cushion layer disposed in one surface of the reinforcing member. The reinforcing member includes a first reinforcing member layer and a second reinforcing member layer that is inserted into the first reinforcing member layer or at least partially surrounds the first reinforcing member layer, and one of the first reinforcing member layer or the second reinforcing member layer has an open area that is at least partially open.