Abstract
As liquid crystal displays (LCDs) become larger, the homogeneity of the LCD panel becomes very important for the quality of the image. The inhomogeneity of an LCD panel can be caused by many factors: the inhomogeneity of materials, the production process, warping of the panel due to changes in temperature and humidity, and so on. In this study, we developed a scheme of hygro-mechanical analyses to predict the warpage of LCDs. First, the diffusion coefficient, Henry's law coefficient, and the coefficient of moisture expansion (CME) of each LCD component were measured. To confirm the validity of the analyses, the hygro-mechanical deformations of the various components in an LCD were analyzed using these measured material properties. The deformations obtained from the analysis correspond with the quantitative measurement results obtained experimentally. Finally, the warpage of an LCD panel was analyzed, and the analysis corresponds with the measurements qualitatively.
