Foldable Display Bending Frame With Deformation Compensation
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Solution Overview
Problem
Foldable display devices face a risk of failure due to dislocation movement between the flexible display module and the support plate, causing edge interference and potential damage when folded, as they have different bending radii and lack effective compensation mechanisms.
Innovation Solution
The implementation of a flexible display device structure featuring a fixing frame, a bending frame, and a bending mechanism with deformation frames made of soft materials like EPDM, TPEE, or rubber, which elastically deform to compensate for dislocation movements and reduce squeezing forces between the display module and the housing frame, ensuring proper alignment and preventing edge interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the flexible display module and support plate are fixed rigidly, then the structural stability is improved, but the edge interference and failure risk increase when folded
Solution Approach 1:
The patent introduces a flexible bending frame with deformation frames made of soft materials (EPDM, TPEE, or rubber) that can elastically deform during folding. This flexible structure allows the bending frame to accommodate the different bending radii between the display module and support plate, preventing edge interference while maintaining structural stability during both folded and unfolded states.
Solution Approach 2:
The patent changes the physical state of the deformation frames from rigid to flexible by using soft materials with specific elastic properties. The deformation frames can undergo elastic deformation within a specific range (200 μm to 300 μm thickness) to compensate for dislocation movements, effectively resolving the contradiction between structural stability and failure risk during folding operations.
2Adaptability or versatility
If the bending radius of the display module and support plate are different, then the flexibility and foldability are improved, but the dislocation movement causes edge interference
Solution Approach 1:
The bending frame acts as an intermediary component between the flexible display module and the support plate. The deformation frames within the bending frame serve as mediators that elastically deform to compensate for the dislocation movements caused by different bending radii, thereby eliminating edge interference while preserving the foldability benefit.
Solution Approach 2:
The deformation frames are designed with specific elastic properties and thickness (200 μm to 300 μm) to provide beforehand cushioning for the dislocation movements that occur during folding. This pre-designed elastic deformation capability prevents edge interference before it can cause damage, allowing the device to be folded safely in both inward and outward directions.
3Reliability
If deformation frames with specific thickness (200-300 μm) are used, then the elastic deformation capability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a thickness range (200 μm to 300 μm) for the deformation frames rather than a single precise value. This parameter range provides sufficient elastic deformation capability while allowing for normal manufacturing variations. The soft material properties (EPDM, TPEE, or rubber) are selected to ensure adequate elasticity within this thickness range, balancing reliability with manufacturability.
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 structure effectively reduces the risk of failure by compensating for dislocation movements and preventing edge interference, maintaining the integrity of the display device during both inward and outward folding by using soft materials to absorb and distribute forces appropriately.
Implementation Method 1
a bending frame and a bending mechanism, wherein the bending frame includes a first deformation frame, a second deformation frame, a third deformation frame and a fourth deformation frame; the first deformation frame and the second deformation frame include a soft material
Data Source
AI summary
A display device, comprising: a flexible display module (4), a fixing frame (11) and a bending frame (12). The flexible display module comprises a first planar region (41), a second planar region (43), and a first bending region (42) between the first planar region and the second planar region. The fixing frame comprises a first frame (111) for fixing the first planar region and a second frame (112) for fixing the second planar region. The bending frame comprises a first deformation frame (31), a first bending frame (121), a second deformation frame (32), a second bending frame (122), and a bending mechanism (123) between the first bending frame and the second bending frame, the first bending frame being fixed to the first frame by means of first deformation frame, second bending frame being fixed to the second frame by means of second deformation frame.