Analysis on discharge characteristics of MgCaO crystal powders on Li-doped MgO layer in AC plasma display panels

Summary form only given. The MgO layers have been used as a protective layer in ac plasma display panels (ac-PDPs) due to their high stability against ion bombardment, low optical loss, high thermal stability, and good electrical insulating properties. Moreover, the MgO layers play a significant role in reducing the discharge voltage of ac-PDPs due to their high secondary electron emission capability and thus, various attempts to improve the characteristics of these layers have been reported¹. However, for improving luminous efficiency of ac-PDPs, in case of increasing the Xe gas partial pressure, the discharge characteristics are much aggravated under the conventional MgO layer. Accordingly, the additional MgCaO crystal powders on the conventional MgO layer, that is called a functional layer, is used to overcome the demerits of the conventional MgO layer under higher Xe gas partial pressure. And also, Li-doped MgO layer is used to improve the MgO characteristics. In this study, the Li-doped MgO layer was deposited by an electron beam evaporation, and the MgCaO crystal powder was coated on the Li-doped MgO surface by a spray method in ac-PDPs.