柔性屏幕的力学行为分析

Analysis on the Mechanical Behavior of Flexible Screens.

作者信息

Niu Lirui, Ding Jun, Liu Wei

机构信息

School of Mechanical Engineering, Southwest Petroleum University, Chengdu 610500, China.

Center for Gravitational Wave Experiment, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.

出版信息

Materials (Basel). 2022 Apr 12;15(8):2829. doi: 10.3390/ma15082829.

DOI:10.3390/ma15082829

PMID:35454523

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9032455/

Abstract

Recently, flexible organic light-emitting devices (OLEDs) have become more and more popular. However, the force distribution and deformation are very complex during the bending process, and it is difficult to analyze the stress and strain by theoretical analysis and direct experiment. In this paper, finite element analysis of the bending model for the flexible screen was performed. For common U-shaped bending, it was shown that the maximum Mises stress increases rapidly as the bending radius decreases, and the redistribution of the tensile zone and the compression zone should be the key to the layer material selection. The results were verified by an imaging experiment. Further, a water-drop-shaped bending mode was analyzed to reduce the risk of structure failure.

摘要

近年来，柔性有机发光器件（OLED）越来越受欢迎。然而，在弯曲过程中力的分布和变形非常复杂，通过理论分析和直接实验难以分析应力和应变。本文对柔性屏幕的弯曲模型进行了有限元分析。对于常见的U形弯曲，结果表明，随着弯曲半径减小，最大米塞斯应力迅速增加，拉伸区和压缩区的重新分布应是层材料选择的关键。成像实验验证了结果。此外，分析了水滴形弯曲模式以降低结构失效风险。