Flexible Display Bendable Area Impact Absorption
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Solution Overview
Problem
Flexible display apparatuses are prone to damage and signal line breakages due to the thinness of signal lines in the bendable area, which are susceptible to impact, leading to deformations and failures.
Innovation Solution
A flexible display apparatus design featuring a unitary flexible display panel with a bendable area containing wire-free portions to absorb impact, a support structure between the display and peripheral areas, and curved signal lines that detour through these wire-free portions, with optional bumpers and apertures to distribute and absorb impact, reducing pressure on signal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display panel uses thin signal lines to achieve flexibility, then the flexibility and bendability of the display is improved, but the signal lines become susceptible to impact and breakage
Solution Approach 1:
The patent introduces a bumper structure positioned at the bendable area of the flexible display panel. This bumper acts as a cushioning element that absorbs external impacts before they can reach and damage the thin signal lines. The bumper is specifically located at the region most susceptible to impact (the bendable area), providing protective cushioning in advance of any harmful force reaching the vulnerable signal lines.
Solution Approach 2:
The bumper serves as an intermediary protective element between the external impact source and the thin signal lines. Instead of allowing direct contact between impacting objects and the vulnerable signal lines, the bumper intermediates by absorbing and distributing the impact force, thereby protecting the signal lines while maintaining the overall flexibility of the display structure.
2Reliability
If the cover plate is designed to prevent damage, then protection is provided, but it can only handle relatively small impacts and fails against larger forces
Solution Approach 1:
The patent divides the protection system into multiple functional segments: the cover plate provides basic protection against small impacts and environmental factors, while the bumper specifically handles larger impact forces at the bendable area. This segmentation allows each component to be optimized for its specific protective function, with the bumper providing enhanced shock absorption capability that the cover plate alone cannot achieve.
Solution Approach 2:
The protection system combines different materials with complementary properties: the cover plate (typically a rigid or semi-rigid material) provides structural protection and environmental sealing, while the bumper (made of elastomeric or foam materials) provides shock absorption and impact mitigation. This composite approach creates a multi-layered protection system that can handle both small and large impacts effectively.
3Reliability
If signal lines are routed through the bendable area to maintain connectivity, then electrical connection is maintained, but the signal lines are exposed to impact and deformation
Solution Approach 1:
The bumper acts as an intermediary protective barrier that allows signal lines to remain routed through the bendable area for electrical connectivity while protecting them from impact. The signal lines can maintain their functional routing path, and the bumper provides protective coverage over this routed path, absorbing impacts that would otherwise directly affect the signal lines.
Solution Approach 2:
The bumper provides beforehand cushioning specifically at the bendable area where signal lines are routed. By positioning the cushioning element at the exact location where signal lines are most vulnerable (the bendable area), the system maintains electrical connectivity through proper signal line routing while providing protective cushioning before impacts can damage the lines.
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 design effectively absorbs and distributes impact, reducing the likelihood of signal line breakages and deformations, enhancing the durability and reliability of flexible display apparatuses by minimizing pressure on signal lines and distributing impact evenly across the support and display panel.
Implementation Method 1
the bendable area includes one or more wire-free portions configured to absorb impact applied on the bendable area
Implementation Method 2
the third portion is substantially outside the respective one of the one or more wire-free portions; and a virtual extension of at least one of the first portion or the second portion passes through a respective one of the one or more wire-free portions
Data Source
AI summary
A flexible display apparatus is provided. The flexible display apparatus includes a unitary flexible display panel having a display area, a peripheral area, and a bendable area connecting the display area and the peripheral area, wherein the bendable area includes one or more wire-free portions configured to absorb impact applied on the bendable area; a support sandwiched between the display area and the peripheral area, wherein the support has a first side, a second side facing the first side, and a third side connecting the first side and the second side, the display area is on the first side, the peripheral area is on the second side, and the unitary flexible display panel is bend about the third side; and a driving circuit in the peripheral area and connecting to a plurality of signal lines extending through the bendable area into the display area.