Flexible Display Bending Stiffness Detection Apparatus
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Solution Overview
Problem
Current detection methods for flexible display screens, such as OLEDs, fail to meet the requirements for testing bending stiffness, which is crucial for ensuring product reliability and specifications.
Innovation Solution
A method and apparatus that involve arranging a display panel with a stationary and rotating portion on a reference surface, driving the rotating portion to bend towards the stationary portion, and using mechanical sensors to measure the bending force and rotation angle, allowing for the determination of bending stiffness based on these parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional detection methods are used for flexible display screens, then the testing process is simple, but the measurement precision of bending stiffness is insufficient
Solution Approach 1:
The display panel is divided into a stationary portion and a rotating portion, allowing independent measurement of bending characteristics. The stationary portion remains fixed on the reference surface while the rotating portion undergoes controlled bending, enabling precise force and angle measurements without interfering with the entire panel.
Solution Approach 2:
A mechanical sensor is introduced as an intermediary element to measure the bending force between the rotating portion and the reference surface. This mediator enables accurate quantification of the bending stiffness by converting mechanical deformation into measurable signals without directly affecting the panel structure.
2Adaptability or versatility
If the rotating portion is driven to bend over a wide range (0° to 180°), then the measurement coverage is improved, but the device complexity increases
Solution Approach 1:
The rotating portion serves multiple functions: it acts as both the test specimen undergoing bending and the measurement platform for angle detection. The same component is used across the full 0° to 180° range without requiring separate mechanisms for different bending angles, simplifying the overall device while maintaining versatility.
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
This approach enables accurate measurement of bending stiffness over a range of 0° to 180°, effectively addressing the limitations of existing methods and ensuring reliable testing of flexible display panels.
Implementation Method 1
providing a mechanical sensor between the reference surface and the stationary portion to acquire a first force exerted by the stationary portion to the reference surface
Data Source
AI summary
A method and an apparatus for detecting bending stiffness and a method for testing a display panel. The method for detecting bending stiffness includes: arranging an object to be tested on a reference surface to make a stationary portion and a rotating portion of the object to be tested attached to the reference surface, the stationary portion and the rotating portion being connected to each other; driving the rotating portion to bend from the reference surface toward the stationary portion, and acquiring a rotation angle between the rotating portion and the reference surface; acquiring a bending force received by the rotating portion when the rotating portion is bent from the reference surface toward the stationary portion; and determining bending stiffness of the object to be tested on the basis of the bending force and the rotation angle.