Flexible Screen Tensile Test Device Using Segmented Clamping

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Solution Overview

Problem

Traditional tensile test methods for flexible screens can damage the screens due to clamping and unevenly distribute tensile force, which hinders accurate performance evaluation.

Innovation Solution

A flexible screen tensile test device featuring a rotating disk with guide grooves and telescopic slide rods forming a hollow ring column, allowing for controlled stretching and contraction within a predetermined angle, ensuring uniform tensile stress distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional clips are used to clamp both ends of the flexible screen, then the tensile test can be performed, but the flexible screen may be damaged and tensile force distribution becomes uneven

Engineering Contradiction:

Improvetesting reliabilityVSAvoidscreen damage and uneven force distribution

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The testing device divides the clamping function into multiple independent clamping units distributed along the flexible screen, replacing the traditional two-end clamping approach. Each clamping unit independently applies force, ensuring uniform force distribution across the screen and preventing localized damage while maintaining reliable tensile testing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a specialized clamping structure with multiple clamping units that act as intermediaries between the testing machine and the flexible screen. This intermediary system distributes the tensile force uniformly across the screen surface, preventing direct concentration of force at two points that would cause damage and uneven stress distribution.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If traditional two-end clamping method is used, then the test device structure is simple, but the tensile force inside the flexible screen becomes unevenly distributed

Engineering Contradiction:

Improvetest device structureVSAvoidtensile force distribution uniformity

Core Design Contradiction:

Device complexityVSStress or pressure

Solution Approach 1:

The clamping function is segmented into multiple independent clamping units arranged along the flexible screen. This segmentation allows each unit to apply controlled force locally, ensuring uniform overall force distribution while maintaining a relatively simple test device structure through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from one-dimensional two-end clamping to a distributed multi-point clamping arrangement along the length of the flexible screen. This dimensional change in the clamping configuration enables uniform force distribution across the screen while keeping the device structure manageable through systematic arrangement of clamping units.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12130263B2Flexible screen tensile test device and flexible screen test method

Publication Date: 2024.10.29 SUZHOU CHINA STAR OPTOELECTRONICS TECH CO LTD

AI summary

A flexible screen tensile test device and a flexible screen test method are provided. The flexible screen tensile test device includes a tensile unit, which includes a rotating disk having at least two rotating disk guide grooves, at least two telescopic slide rods positioned above the rotating disk and corresponding to the rotating disk guide grooves in a one-to-one correspondence, and sliding blocks connected with the telescopic slide rods and positioned in the rotating disk guide grooves.