DC形PDPの陰極材料に関する研究 : 六ほう化ガドリニウム陰極

概要

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In color DC plasma display panels, Xe is expected to be used as the discharge gas. However, this gas is absorbed by the cathode material, LaB_6. Therefore, it is necessary to analyze Xe's absorption mechanisms into the cathode material and to develop new cathode materials which do not absorb Xe. In this study, we tested the absorption of Xe and Kr gases into cathode materials such as GdB_6 and MoB. We found that these gases were absorbed less by the GdB_6 cathode than by the LaB_6 one and not at all by MoB. The absorption mechanism was investigated by spectral spectrum analysis of the discharge light and analysis of the degradation of illumination intensity for tests for running several hundred hours. The presence of absorbed gases in the cathode was also analyzed by XMA after the tests. We found that the absorbed Xe distribution in the cathode concided with the distributions of these cathode materials: Gd, Mo, Ba, and Al.
1999-01-20