Coated Support Plate Openings for Foldable Display Durability
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Solution Overview
Problem
Foldable display devices experience fatigue fracture due to repeated folding and unfolding of the support member supporting the flexible display panel.
Innovation Solution
A support plate with defined openings and a coating layer is used to enhance the flexibility and durability of the support member, which includes a coating layer coated on the support plate to improve its structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a support member is used to support a flexible display panel, then structural support is improved, but fatigue fracture occurs due to repeated folding and unfolding
Solution Approach 1:
The support member is divided into multiple segments with openings that allow the structure to flex during folding and unfolding operations. This segmentation enables the support member to maintain structural integrity while accommodating repeated mechanical stress without fatigue fracture.
Solution Approach 2:
The support member combines rigid material properties for structural support with flexible characteristics through the openings and coating layer, creating a composite structure that resists fatigue fracture while maintaining necessary strength.
2Ease of operation
If the support member is made more flexible to allow folding, then ease of operation is improved, but structural integrity deteriorates
Solution Approach 1:
The support member has different properties in different regions: openings are strategically positioned to provide flexibility where needed, while solid portions maintain structural integrity. The coating layer is applied selectively to enhance flexibility in specific areas without compromising overall structural strength.
Solution Approach 2:
A flexible coating layer is applied to the support member, creating a thin film structure that enables folding and unfolding operations while the underlying rigid support plate maintains structural integrity through its openings design.
Data Source
AI summary
A display device includes a display panel including one surface, on which an image is displayed, and an opposing surface opposite to the one surface; a support plate disposed on the opposing surface of the display panel and including one surface facing the display panel, an opposing surface opposite to the one surface thereof, where a plurality of openings is defined through the support plate from the one surface to the opposing surface thereof in a thickness direction such that the support plate further includes inclined inner peripheral surfaces defining the plurality of openings; and a coating layer disposed to surround the one surface of the support plate, the opposing surface of the support plate, and the inner peripheral surfaces of the support plate defining the plurality of openings.