Flexible Display Curved State Detection via Optical Fiber
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Solution Overview
Problem
Flexible OLED displays in curved or folded states often fail to display images completely due to the inability to predict and adjust for the current curved degree of the screen, leading to incomplete image visibility and impaired user interaction.
Innovation Solution
Incorporating N optical fibers that can curve with the display panel, with a laser transmitter and light intensity detector, allowing a controller to determine the curved state based on light intensity parameters, enabling selection of appropriate display modes to avoid image truncation and enhance usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the flexible OLED display is curved or folded to display larger images, then the display area is increased, but the image cannot be completely displayed and user visibility is reduced
Solution Approach 1:
The patent introduces optical fibers as intermediary elements that curve together with the flexible display panel. These optical fibers serve as mediators to transfer light from the laser transmitter through the curved path to the light intensity detector, enabling indirect measurement of the curved state without directly measuring the display panel itself.
Solution Approach 2:
The patent replaces direct mechanical measurement methods with an optical measurement system. Instead of using mechanical sensors to detect the curved degree, the system uses laser transmitters, optical fibers, and light intensity detectors to optically sense the curved state through changes in light intensity caused by the curved path length.
2Adaptability or versatility
If the flexible OLED display is curved or folded, then the display can be adapted to different surfaces, but the system cannot predict the current curved degree affecting image display quality
Solution Approach 1:
The patent implements a feedback mechanism where the light intensity detector continuously monitors the light intensity from the optical fibers, and the controller processes this information to determine the curved state. This feedback loop enables the system to real-time detect and respond to changes in the curved state, ensuring accurate information about the display panel's configuration is always available.
Solution Approach 2:
The optical fibers automatically curve together with the flexible display panel without requiring external intervention. The system self-detects the curved state through the inherent physical coupling between the optical fibers and the display panel, eliminating the need for separate sensing mechanisms.
3Measurement precision
If multiple optical fibers are used to detect curved state, then the detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple optical fibers into a single integrated detection system. The controllers consolidates signals from multiple light intensity detectors and processes them together to determine the curved state, reducing the complexity that would otherwise arise from completely separate detection channels.
Solution Approach 2:
The optical fiber detection system serves multiple functions: it detects the curved degree, determines the curved state, and provides feedback for image display adjustment. This multi-functionality reduces the need for separate systems for each function, thereby reducing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate determination of the curved state of flexible displays, preventing image truncation and improving user interaction by allowing adaptive display modes, thus enhancing the overall application effect.
Implementation Method 1
a light intensity detector disposed at an output terminal of the optical fiber so as to detect light intensity parameter at the output terminal
Data Source
AI summary
What are disclosed are a flexible display device and a method of detecting a curved state of a flexible display panel thereof, which can estimate a curved state of a flexible display panel. The flexible display device includes a flexible display panel and a controller. The flexible display panel includes N optical fibers which can be curved with the curving of the flexible display panel, a laser transmitter disposed at an input terminal of the optical fiber and a light intensity detector disposed at an output terminal of the optical fiber, wherein N is an integer greater than or equal to 1. The controller is configured to acquire a light intensity parameter detected by the light intensity detector, and determine a current state of the flexible display panel according to the light intensity parameter, wherein M is an integer greater than or equal to 1 and smaller than or equal to N.