Foldable Display Bending Structure With Metal Notch Impact Protection
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Solution Overview
Problem
Foldable display devices are vulnerable to external impacts due to the bending region where cables and components are exposed, leading to potential damage and electrical disconnection.
Innovation Solution
A display device design featuring a protrusion region with a notch region on a metal layer and a stress control member, combined with a lower film and cover, reduces the radius of curvature in the bending area, enhancing protection against external impacts by distributing stress and diverting impact forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bending region is designed to increase the display region, then the display area is improved, but the vulnerability to external impacts increases
Solution Approach 1:
The metal layer is segmented by introducing a notch region that divides it into separate portions. This segmentation allows the bending region to be isolated from the main metal layer structure, enabling the display panel to bend while protecting the cables and components in the bending region from external impacts.
Solution Approach 2:
The notch region acts as an intermediary structure between the metal layer and the bending region. By creating this intermediate space, the design allows the bending region to move independently while the metal layer maintains its structural integrity, thereby protecting the cables and components from damage during bending and when exposed to external impacts.
2Object-affected harmful factors
If the radius of curvature in the bending region is decreased, then the protection against external impacts is improved, but the structural complexity increases
Solution Approach 1:
The notch region is introduced locally in the metal layer at the bending region, rather than changing the entire metal layer structure. This localized modification allows the radius of curvature to be decreased in the bending area for better protection, while the rest of the metal layer maintains its original simple structure, thus minimizing the increase in overall structural complexity.
Data Source
AI summary
A display device including a display panel which includes a main region configured to display an image and a protrusion region protruding from one side of the main region to be bent, a lower film which is disposed on a rear surface of the display panel, and a metal layer which is disposed on a rear surface of the lower film and comprises a notch region. The protrusion region includes a first bending portion which has a first curvature and a pad portion which faces the main region in a thickness direction of the display panel, and the pad region is disposed in the notch region.