Reliability of Flexible Display by Simulation and Strain Gauge Test

With the requirements of miniaturization of the portable consumer electronic products, more and more new materials, fabricating process and technologies are used to make the electronic components flexible, bendable and wearable. Flexible display, as one of the most important components, recently attracts an enormous research interest in industry and university. With the application of these technologies, the reliability issue has been coming forth with the different designs, fabrication processes and substrate material applications. In this paper, simulations including three points bending and twisting in different ways are investigated. In order to verify the simulation model, a special simulation model that contains the strain gauge is built. Through the comparison of the simulation results and strain gauge test results, the initial right model was given. Based on this model, the impact of different bending setup parameters to the display flexibility were studied, such as the bending roller radius, the span of support roller, bending height and etc. And the flexibility and reliability of the display were evaluated by the comparisons.