Abstract: A blower comprises a housing and an impeller. The housing comprises a side outlet and an inlet comprising a predetermined profile, and the impeller is disposed in the housing. The predetermined profile is quadratrical, elliptical, polygonal, non-coaxial circle, or irregularly closed shaped. A flow tunnel is disposed between the impeller and the housing.

Abstract: A specially designed transparent electrode for plasma display panel is disclosed. The transparent electrodes are disposed in pairs on the front glass substrate of the panel spaced apart and parallel to each other. The paired transparent electrodes X and Y are characterized by having respectively an extension member Xn and an extension member Yn projected from the opposing side of a strip-shaped base corresponding to each discharge cell of the panel. The extension member Xn and extension member Yn are asymmetrical in shape and spaced apart a predetermined distance, so as to enhance its field effect in the discharge cell with the address electrode on the rear substrate and increase the illumination efficiency of the discharge cell. In addition, the distances between extension member Xn and extension member Yn of each paired transparent electrodes X and Y corresponding to the red, green and blue discharge cells (R, G, B) in each pixel of the PDP are unequal.