| 초록 |
Success of Flat Panel Display (FPD) such as Liquid Crystal Display (LCD) accelerates the development of new type of FPDs. Glass based displays encounter limitation when thinner and lighter in weight become point of interest, thus the plastic substrate emerges as a substitute. Plastic substrates have also limitations in terms of thermal stability, chemical resistance, and optical characteristics and so on when compared with the glass. There are many potential polymers for the display substrates: PET, PEN, PC, PAR, COC, and PES and so on. On this paper, key characteristics required for display substrates will be pointed. Newly developed PES substrate has been analyzed. The PES film has 230°C glass transition temperature, less than 10nm optical retardation, 88% optical transmission, low heat shrinkage, and good surface roughness. Another important issue is gas barrier property of the polymer substrate. Glass does not transfer gas through but polymer is porous. Coating is one way to improve the gas barrier property of polymer substrates. The gas barrier property is briefly discussed. |
