Curved Display Bending Control Based on Viewer Distance
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Solution Overview
Problem
Existing display devices, particularly OLEDs, face challenges in dynamically changing curvature to enhance user immersion and adapt to different viewing conditions, as they lack a flexible backlight system, limiting their ability to adjust curvature based on user distance or content arrangement.
Innovation Solution
A display device with a bending module and controller that allows for switching between flat, first bending, and second bending modes based on user distance, number of remote controllers, or content arrangement, using a combination of mechanical links and a guide shaft to adjust curvature, and providing an interface for automatic or manual mode switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display module uses a fixed flat structure, then the manufacturing process is simple and structural stability is maintained, but the user immersion and viewing angle adaptation are limited
Solution Approach 1:
The display module transitions from a fixed flat structure to a dynamic structure that can change curvature states. The bending module enables the display to switch between flat mode and multiple bending modes (first bending mode, second bending mode) based on user distance and viewing conditions, making the structure adaptive rather than static.
Solution Approach 2:
The display device is divided into functional modules: a display module that can change curvature, a bending module located at the center of the rear surface to enable curvature changes, and a controller to manage mode switching. This segmentation allows independent optimization of each component while achieving overall adaptability.
2Speed
If the display module switches curvature mode quickly, then the response speed is improved, but the user may experience discomfort from sudden transitions
Solution Approach 1:
The system provides beforehand cushioning by detecting user distance and anticipating the need for curvature adjustment before the user actually experiences suboptimal viewing conditions. The controller proactively switches curvature modes based on detected distance thresholds, preventing viewing discomfort before it occurs.
Solution Approach 2:
The system implements feedback mechanisms by detecting user distance (via sensors or remote controller position) and using this information to automatically adjust the display curvature. The controller continuously monitors viewing conditions and adjusts the bending module accordingly, creating a closed-loop system that responds to user needs.
3Extent of automation
If the display module uses manual curvature adjustment, then the system simplicity is maintained, but the automation and user convenience are reduced
Solution Approach 1:
The display device performs self-service by automatically detecting user distance and adjusting its own curvature without requiring manual user input. The controller autonomously determines when to switch between flat mode and bending modes based on detected viewing conditions, making the system self-regulating.
Solution Approach 2:
The controller serves multiple functions: it manages curvature mode switching, detects user distance or remote controller position, determines optimal curvature modes based on content type (full-screen vs. split-screen), and coordinates the bending module operations. This multi-functionality reduces the need for separate dedicated components.
4Illumination intensity
If the display module maintains a fixed curvature, then the structural stability is preserved, but the viewing angle optimization for different user distances is limited
Solution Approach 1:
The system changes the curvature parameter of the display module based on detected viewing conditions. The controller adjusts the curvature radius parameter by switching between flat mode (infinite radius) and bending modes (finite radii), optimizing the viewing angle and immersion for different user distances and content types.
Data Source
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AI summary
A display device includes a main body provided with a display module on which an image is displayed, a bending module located at a center of a rear surface of the main body, and a controller. The controller includes controlling the bending module to change a curvature of the display module to any one of a flat mode in which the display module is flat, a first bending mode in which the display module has a first curvature, and a second bending mode in which the display module has a second curvature. Here, the second curvature is a maximum curvature of the display module. The controller further includes switching the display module to any one of the flat mode, the first bending mode, and the second bending mode based on a distance to a remote controller.