New Flat Panel Display

This thesis includes two parts of works: ''Thin films packaging for organic emitting light devices (OLED)" and "The research of carbon nanotubes field emission displays (CNT-FED)".Part 1. Thin films packaging for OLEDSupported by High-Tech Program Committee of China, we systematicallystudied the moisture-resistant properties of diamond-like-carbon (DLC) thin films prepared by filter arc deposition (FAD) and silicon nitride thin films prepared by plasma-enhanced chemical vapor deposition (PECVD). The best deposition parameters for packaging OLED were determined. OLED prototypes were successfully packaged by depositing silicon nitride thin films on them. Based on the analysis of the degradation of the OLED, we found the lifetime of the encapsulated devices was increased by more than two orders of magnitude over that of the unencapsulated ones.Part 2. The research of CNT-FEDSupported by the National Natural Science Foundation of China, we studied the field emission properties of carbon nanotubes (CNT). This work included realization of patterned CNT cathode, selection of post-treatment method, study of field emission from CNT cathode, experimentation of triple structure, designing and manufacturing of CNT-FED prototypes.Electron field emission properties of the CNT prepared by a simple spreading technique were studied. The results showed the field emission properties were better than that of diamond-like-carbon thin films.Using screen-printing method, we realized the patterned CNT cathode. We investigated the effect of annealing treatment and H2 plasma treatment. We foundAbstractanneal can greatly increase the emission current density of CNT cathode prepared by screen-printing method and H2 plasma treatment can reduced the threshold field (-1 V/um) and dramatically increase the emission site density (-106/cm2), which have achieved a practical level. We first found a new structure of CNT, which we called nodose carbon nanotube, and discussed its emission mechanism. H2 plasma treatment is a simple, practical, low cost method to improve the field emission properties of different and large area CNT cathode, which implies that one of the key problems in the realization of the CNT cathode prepared by screen-printing method was resolved.We proved the feasibility of front gate and back gate structure, then we design and seal a nonmatrix-addressed, front gate structure, homochromous FED prototype.