Flexible Screen Bending Test System with Extrusion Device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional methods for bending tests of flexible screens are complex and costly, requiring multiple drums or clamps, which complicate operation and increase testing expenses.
Innovation Solution
A method and system involving a mounting device connected to opposite ends of the flexible screen, with an extrusion device that applies a preset force at a preset frequency to simulate bending, allowing for mechanical extrusion tests away from connection points, and detecting mechanical, optical, and electrical reliability post-test.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional bending test methods are used, then the test process is simple, but the measurement precision is insufficient and cannot accurately reflect the bending resistance of flexible screens
Solution Approach 1:
The patent divides the bending test into multiple discrete bending stages with different bending radii (R1, R2, R3, etc.), where each stage applies a specific bending force and measures the corresponding force value. This segmentation allows for precise measurement of bending resistance at different curvature levels, transforming a single complex measurement into multiple controlled, measurable stages that accurately reflect the flexible screen's performance under varying bending conditions.
2Adaptability or versatility
If fixed bending radius tests are used, then the test setup is simple, but the adaptability is poor and cannot evaluate flexible screens with different bending requirements
Solution Approach 1:
The patent employs a movable bending wheel that can dynamically adjust its position and bending radius according to test requirements. The system transitions from static, fixed-radius bending fixtures to a dynamic setup where the bending wheel can be positioned at different locations to create various bending radii (R1, R2, R3, etc.). This dynamic adjustment capability enables the same test system to evaluate flexible screens under multiple bending conditions without requiring separate fixtures for each radius, thereby improving adaptability while maintaining operational efficiency.
3Reliability
If traditional bending tests are used, then the test time is short, but the reliability is insufficient due to lack of comprehensive bending stage evaluation
Solution Approach 1:
The patent implements preliminary actions by pre-defining multiple bending stages with specific bending radii and force measurement points before conducting the actual test. Each bending stage (with radii R1, R2, R3, etc.) is prepared in advance with predetermined measurement parameters. This preliminary structuring allows the test to systematically evaluate the flexible screen's bending resistance across different curvature levels, ensuring comprehensive and reliable assessment data is collected efficiently without requiring extended test durations.
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 simplifies the testing process, reduces costs, and accurately simulates real-world bending environments for flexible screens, improving operational convenience and test accuracy.
Implementation Method 1
a first bending wheel is used to bend the flexible screen
Implementation Method 2
the force sensor includes a sensor body and an elastic element, where the elastic element is disposed in the sensor body in a state of elastic deformation, and a strain gauge is wrapped on the elastic element
Data Source
Figure 1~2
Figure 3
AI summary
A method for bending test of a flexible screen is disclosed, including: connecting the flexible screen to a mounting device; conducting a mechanical extrusion test to the flexible screen to bend the flexible screen, in which an extrusion point for the mechanical extrusion test is away from connection points between the flexible screen and the mounting device; and conducting a bending performance detection to the flexible screen. And a system for bending test of a flexible screen is also disclosed. The bending performance of the flexible screen can be tested by simulating an environment for the flexible screen in the mechanical extrusion test, and compared with the traditional methods and apparatuses for bending test of a flexible screen, the method and system for bending test of a flexible screen according to the present disclosure are convenience for operation and low cost in testing.