Foldable Display Support Plate Slot Layout for Uniform Bending Stress
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Solution Overview
Problem
The non-uniform stress distribution in the bending areas of foldable display screens due to hollowed-out structures in support plates leads to visual marks resembling cracks, affecting display performance.
Innovation Solution
A support plate design with through grooves composed of first and second strip-shaped slots arranged in an array perpendicular to the bending axis, providing uniform stress distribution and structural continuity, filled with a flexible medium to enhance structural integrity and reduce stress concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hollowed-out structures are created in the bending area of the support plate to provide deformation space, then bending performance is improved, but stress distribution becomes non-uniform causing visual marks
Solution Approach 1:
The hollowed-out structure is segmented into multiple through grooves arranged in an array, where each through groove consists of multiple strip-shaped slots. This segmentation allows the structure to provide sufficient deformation space while maintaining more uniform stress distribution compared to a single large hollowed-out area.
Solution Approach 2:
The support plate is designed with different structural characteristics in different regions: the through grooves are specifically positioned and dimensioned in the bending area to provide local flexibility, while maintaining overall structural integrity. The strip-shaped slots have specific width and spacing parameters optimized for stress distribution in the bending zone.
2Ease of operation
If through grooves are formed to reduce internal stress during bending, then bending performance improves, but structural continuity and integrity are destroyed
Solution Approach 1:
The through grooves are designed as multiple discrete features rather than a continuous large cavity, which maintains structural continuity between the grooves while still providing sufficient deformation space for bending operations.
Solution Approach 2:
The dimensions of the through grooves (width, depth, spacing) are carefully controlled to ensure they provide adequate flexibility for bending while maintaining structural integrity. The parameters are optimized to balance deformation capability with structural continuity.
Data Source
AI summary
Provided are a support plate, a display screen, and an electronic device. The support plate includes a first board and a second board. The first board and the second board are arranged back to back, and the first board is configured to be attached to a display panel. The support plate includes a bending area, and the support plate is configured to bend in the bending area along a preset axial line L. First strip-shaped slots are formed on the first board, and second strip-shaped slots distributed in an array at intervals along the axial line L are formed on the second board. The first strip-shaped slots are continuously provided along the axial line L and extend through the first board to form a unified edge structure.