Full-Field Strain Analysis for Mobile Folding Screens via DIC

Date:2025-04-16

Why Bending Tests are Crucial for Flexible Screens

Flexible screens have ushered in the era of foldable smartphones; compared to traditional displays, they are thinner, lighter, and more energy-efficient. Their inherent flexibility and superior durability—far exceeding that of earlier screens—have effectively opened the door to innovation in mobile device design.


Flexible screen technology is currently evolving, with many technical aspects still undergoing continuous improvement. Given that these screens are subjected to frequent bending and folding, insufficient bending strength can compromise their service life. Conducting bending tests in accordance with international or industry standards—measuring parameters such as maximum stress, maximum deformation, bending stress, bending strength, and elastic modulus—can effectively enhance product quality.


How XTDIC System Measures Strain Concentration


The XTDIC 3D digital speckle full-field strain measurement system is employed to analyze strain concentration zones and strain magnitudes in mobile phone screens during the bending process.

 XTDIC 3D digital speckle full-field strain measurement system