Flexible Display Panel Bending Region Support Structure
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Solution Overview
Problem
Flexible display panels face circuit breakage and shortened service life due to inadequate bending radius, which affects the flatness and durability of the panel when bent or unfolded.
Innovation Solution
A flexible display panel design featuring a main body with a bending region and non-bending region, incorporating a support member with a first and second support sheet. The first support sheet maintains a preset bending radius when bent, while the second support sheet keeps the region flat when unfolded, preventing circuit breakage and extending the panel's service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the bending radius is made large to ensure flatness of the unfolded panel, then the flatness is improved, but the flexibility and ease of bending is worsened
Solution Approach 1:
The support member is designed with dynamic characteristics that allow it to adapt its stiffness based on the operational state. During bending, the support member flexes to accommodate the curvature, and during unfolding, it provides structural support to maintain flatness. This dynamic behavior resolves the contradiction between maintaining flatness and enabling flexibility.
Solution Approach 2:
The patent changes the physical parameters of the support structure by using a multi-layer support member with different material properties and thicknesses. The first support sheet has different characteristics than the second support sheet, allowing the overall structure to exhibit different stiffness characteristics during bending versus flat states, thus resolving the contradiction between flatness and bending flexibility.
2Ease of operation
If the bending radius is made small to improve flexibility, then the ease of bending is improved, but the circuit reliability is worsened due to breakage
Solution Approach 1:
The patent employs flexible support sheets that can bend without causing damage to the circuit. The first support sheet is specifically designed to maintain a preset bending radius during bending operations, preventing excessive curvature that would cause circuit breakage while still allowing flexible movement. This resolves the contradiction between bending flexibility and circuit reliability.
Solution Approach 2:
The support member acts as a protective structure that prevents harmful bending radii from reaching the circuit. By providing structural support in advance, it cushions the circuit against damage during bending operations, ensuring reliability while maintaining flexibility.
3Device complexity
If a single support structure is used, then the device complexity is reduced, but the ability to maintain both bending radius and flatness is worsened
Solution Approach 1:
The support member is divided into multiple functional layers: a first support sheet and a second support sheet with different properties. The first support sheet primarily maintains bending radius during flexing, while the second support sheet provides additional support for flatness maintenance. This segmentation allows each layer to specialize in specific functions, achieving precise control over bending radius and flatness without excessive overall complexity.
Solution Approach 2:
The patent uses composite material structures where the first and second support sheets have different material properties optimized for different functions. This composite approach enables the support member to simultaneously provide bending radius control and flatness maintenance, resolving the contradiction between structural simplicity and functional precision.
Data Source
AI summary
The present invention provides a flexible display panel and an electronic device. The panel includes: a main body having a bending region and a non-bending region, the main body including an accommodating cavity arranged corresponding to the bending region; and a support member placed in the accommodating cavity. The support member includes a first support sheet and a second support sheet. The second support sheet keeps the bending region flat when the flexible display panel is in a flat state. The first support sheet keeps a bending radius of the bending region within a preset range when the flexible display panel is in a bent state. The flexible display panel and the electronic device of the present invention avoids breakage of a circuit in the flexible display panel and prolongs a product's service life.