Foldable Display Plate with Variable Opening Area Ratios
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Solution Overview
Problem
Flexible display devices with foldable regions have a visual recognition issue due to varying opening area ratios, making the bendable portions of the plate-shaped member visible through the display panel.
Innovation Solution
A display device design featuring a plate-shaped member with a bendable portion that includes regions with varying opening area ratios and through hole configurations, preventing alignment and visibility of non-opening portions, thereby minimizing the visibility of the bendable portion when folded or rolled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plate-shaped member with a bendable portion is placed on a flexible display panel, then the device can be folded or rolled up, but the bendable portion becomes visually recognizable through the display panel due to varying opening area ratios
Solution Approach 1:
The patent applies local quality by making different regions of the bendable portion have different opening area ratios. Specifically, a first region has a first opening area ratio and a second region has a second opening area ratio that is different from the first. This creates local variations in the optical properties of the bendable portion to prevent visual recognition of the fold line while maintaining overall foldability.
Solution Approach 2:
The patent changes the opening area ratio parameter across different regions of the bendable portion. By varying this geometric parameter, the optical characteristics of the bendable portion are modified to reduce visual detectability of the fold line while preserving the mechanical flexibility needed for folding.
2Adaptability or versatility
If the opening area ratio varies sharply at the boundary between regions with and without opening portions, then the foldable region becomes visible through the display panel
Solution Approach 1:
The patent addresses this by creating local quality differences in the opening area ratios. The first region and second region have deliberately different opening area ratios, which prevents sharp visual boundaries from forming at region transitions, thereby reducing the visibility of the fold line while maintaining foldability.
Solution Approach 2:
Instead of having uniform opening patterns that create sharp visual boundaries, the patent inverts the approach by using non-uniform opening area ratios across regions. This inversion of the uniformity assumption prevents the formation of visible boundaries at region boundaries, solving the visual recognition problem.
Data Source
AI summary
Provided is a display device including a display panel capable of being folded or rolled up, and a plate-shaped member placed on the display panel and capable of being folded or rolled up together with the display panel, the plate-shaped member including a bendable portion that is bent when the plate-shaped member is folded or rolled up together with the display panel, the bendable portion including a region group including a plurality of regions arranged in a bending direction along which the bendable portion is bent when the plate-shaped member is folded or rolled up together with the display panel, the bendable portion having openings with each of the regions having a plurality of through holes formed therein, an opening area ratio of the bendable portion in each of the regions being different from an opening area ratio of the bendable portion in an adjacent one of the regions.