Flexible Screen Viewing Angle Control via Curling
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Solution Overview
Problem
Traditional display screens have a fixed viewing angle, leading to issues where observers outside this range cannot view the content properly and may inadvertently peek at private information, compromising user privacy.
Innovation Solution
A method and device that utilize a flexible screen capable of being curled based on observer detection and viewing angle analysis, employing human eye or face recognition, to adjust the screen's visibility range and prevent unauthorized viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the viewing angle of the display screen is fixed, then the manufacturing process is simple, but observers outside the viewing angle range cannot view the content properly and privacy may be compromised
Solution Approach 1:
The patent applies the dynamics principle by transforming the static fixed viewing angle into a dynamic adjustable viewing angle. The flexible screen can be curled to different degrees based on the number and position of observers detected by the sensor, allowing the viewing angle to adapt dynamically to different usage scenarios and observer configurations
Solution Approach 2:
The patent implements parameter changes by modifying the physical state of the screen from flat to curled. By changing the curvature parameter of the flexible screen, the system adjusts the viewing angle parameter to match different observer positions and quantities, thereby improving viewing adaptability without requiring multiple fixed-angle screens
2Adaptability or versatility
If the viewing angle is expanded to allow more observers to view the screen, then more people can see the content, but unauthorized users may peek at private information
Solution Approach 1:
The system dynamically adjusts the viewing angle based on the number of observers detected. When one observer is present, the screen maintains a larger viewing angle for optimal viewing. When multiple observers are detected, the screen curls to reduce the viewing angle, thereby accommodating different viewer scenarios while preventing unauthorized peeping by limiting the viewing range appropriately
Solution Approach 2:
The patent implements feedback by using sensors to detect the number and position of observers, then using this information to control the screen's curling degree. The system continuously monitors observer presence and adjusts the viewing angle in real-time, creating a closed-loop control system that balances viewer accommodation with privacy protection
3Adaptability or versatility
If the screen is made flexible and curlable, then the viewing angle can be adjusted, but the device complexity and control difficulty increase
Solution Approach 1:
The system applies self-service by automatically detecting observer presence and autonomously adjusting the screen's curling degree without requiring manual user input. The sensor and controller work together to self-regulate the viewing angle based on detected observer conditions, eliminating the need for users to manually control the flexible screen
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated control system. Instead of requiring users to physically curl the flexible screen, the system uses sensors to detect observer conditions and automatically controls the screen's curvature through an actuation mechanism, substituting mechanical user interaction with an automated sensing and control system
Data Source
AI summary
The present disclosure provides a method and a device for controlling a screen viewing angle, and a flexible display device. The control method comprises: capturing one or more observers whose sight lines fall within a display area of a flexible screen; determining one or more viewing angles of the one or more observers relative to the display area; determining a curling angle based on the one or more viewing angles; and controlling the flexible screen to be curled according to the curling angle.