P‐7.7: Static Fatigue Fragment Life Analysis and Application of Curved Display Panel

Abstract

In order to ensure the service life of the curved display panel, it is necessary to test and analyze the fatigue fragment life distribution of the curved display panel to predict the fragment rate of the product, and design the proof test scheme and life reliability test scheme. First of all, this paper has carried out Weibull test by 300pcs OC (open cell) samples of 27‐inch R1000 curved product. The Weibull life distribution parameters of the samples were obtained by fitting the test data (shape parameter k=0.337, size parameter λ= 1.86×108). Then, according to the requirement of customer (8000ppm fragment rate in 3 years), the proof test stress (σp=81.2 MPa) was calculated, and the life distribution model after proof test and zero failure reliability algorithm were derived. Finally, based on 90% confidence level (1‐α), life reliability test time (TL) and the number of samples (N), calculated the life reli ability test stress (σL=62.7 MPa) by reliability algorithm and life acceleration formula, determined the test scheme {TL, N, σL} and successfully passed the test verification. The static fatigue fragment life analysis method in this paper can accurately evaluate the fragments of curved display panel, guide the design and development of curved products, and effectively improve the reliability of curved display.