Flexible Display Bending Part Protection Structure
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Solution Overview
Problem
Foldable electronic devices with flexible displays face issues such as deformation, interlayer slip, buckling, and vulnerability to external impacts due to frequent folding, leading to potential malfunction and reduced durability.
Innovation Solution
The implementation of a protection structure for the bending part of the flexible display, comprising a buffer part made of soft molding liquid and a protection member embedded within, which accommodates interlayer slip and enhances durability against external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hard molding liquid is applied to protect the bending part, then durability against external impact is improved, but interlayer slip is disturbed causing buckling and surface quality deterioration
Solution Approach 1:
The patent changes the physical parameters of the molding liquid by using a soft molding liquid instead of a hard one. This soft molding liquid has lower rigidity and higher elasticity, allowing it to accommodate interlayer slip during folding without causing buckling, while still providing sufficient protection against external impacts. The parameter change resolves the contradiction between durability improvement and surface quality maintenance.
Solution Approach 2:
The patent employs a composite structure combining a soft molding liquid with a protection member (such as a rigid or semi-rigid frame). The soft molding liquid fills the gaps and accommodates deformation, while the protection member provides structural support and impact resistance. This composite approach allows the system to achieve both durability against external impacts and maintenance of surface quality during folding operations.
2Manufacturing precision
If a soft molding liquid is applied to accommodate interlayer slip, then surface quality is maintained, but durability against external impact is reduced
Solution Approach 1:
The patent uses a composite structure where a soft molding liquid is combined with a protection member. The soft molding liquid maintains surface quality by accommodating interlayer slip, while the protection member (rigid or semi-rigid frame) provides the necessary structural support and impact resistance. This composite material approach resolves the contradiction by combining materials with complementary properties.
Solution Approach 2:
The patent applies different material properties to different regions: the soft molding liquid is used in areas requiring flexibility and surface quality maintenance, while the protection member is positioned to provide localized structural support and impact resistance. This local differentiation of material quality allows simultaneous achievement of surface quality maintenance and durability improvement.
3Ease of operation
If the flexible display is made thinner to improve flexibility, then folding operation is enhanced, but the bending part becomes more vulnerable to external impact
Solution Approach 1:
The patent applies a soft molding liquid beforehand to the bending part to provide cushioning protection. This soft molding liquid acts as a buffer that absorbs external impacts before they can reach the thin flexible display, thereby protecting the vulnerable bending part while maintaining the thin-profile design that enables flexibility and folding operations.
Solution Approach 2:
The patent creates a composite structure combining the thin flexible display with a protection member (rigid or semi-rigid frame). The thin display maintains flexibility for folding, while the protection member provides structural support and impact resistance. This composite approach allows the system to achieve both ease of folding operation and protection against external impacts.
4Reliability
If a protection cover is added to protect the edge part, then durability is improved, but device complexity increases
Solution Approach 1:
The patent merges the protection function with the existing housing structure by integrating a protection member (rigid or semi-rigid frame) into the housing. This integration combines the protective function with the structural function of the housing, providing durability improvement without significantly increasing device complexity. The soft molding liquid is also integrated into the existing assembly process, further reducing complexity.
Solution Approach 2:
The protection member serves multiple functions: it protects the bending part from external impacts, provides structural support for the flexible display, and can be integrated with the housing structure. This multi-functionality reduces the need for separate protection components, thereby improving durability without proportionally increasing device complexity.
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 solution improves the durability and surface quality of flexible displays by reducing deformation and protecting against external impacts, while allowing for flexible folding operations.
Implementation Method 1
a buffer part disposed between the display panel and the second housing to cover at least a part of the edge area together with the bending part
Implementation Method 2
at least one protection member at least partly embedded in the buffer part and disposed between the bending part and the second housing
Data Source
AI summary
According to various embodiments, an electronic device may include: a hinge module; a first housing connected to the hinge module; a second housing connected to the hinge module so as to be foldable against the first housing; and a flexible display disposed to be supported by the first housing and the second housing. The flexible display may include: a window layer; a display panel located under the window layer, and including a plane part and a bending part configured to extend from the plane part and be bent from an edge area of the flexible display adjacent to a side wall of the second housing toward a rear surface of the flexible display; a buffer part disposed between the display panel and the second housing to cover at least a part of the edge area together with the bending part; and at least one protection member at least partly embedded in the buffer part and disposed between the bending part and the second housing.