Influence of Al2O3 reflective layer under phosphor layer on luminance and luminous efficiency characteristics in alternating-current plasma display panel

• We examine characteristics of plasma display panel when adopting reflective layer.
• Al2O3 reflective layer was deposited under the phosphor layer.
• Al2O3 reflective layer with flaky shape is very effective in enhancing luminance.

This paper examines the optical and discharge characteristics of alternating-current plasma display panel when adopting the Al2O3 reflective layer. The Al2O3 reflective layer is deposited under the phosphor layer by using the screen-printing method. The resulting changes in the optical and discharge characteristics, including the power consumption, color temperature, luminance, luminous efficiency, scanning electron microscopy image, and reflectance, are then compared for both cases with and without Al2O3 reflective layer. As a result of optimizing the thicknesses between the Al2O3 and phosphor layers, the luminance and luminous efficiency are improved by about 17% and 7%, respectively.