Discharge characteristics of MgO coated electrode of cylinder type used for liquid crystal display backlighting.

Abstract

We investigated discharge characteristics in cold cathode fluorescent lamps of 4mm inner diameter used for backlighting of liquid crystal display. MgO film has a high secondary electron emission. The material of electrode on one side was a Ni, and on another side that was a MgO thin film on Ni. The filling gas in the lamp was Ne. The cathode voltages of lamp with the electrodes made with different materials were simultaneously measured with high voltage probe connected to digital oscilloscope when the lamp was operated by sine-wave on the same condition.