| http://www.w3.org/ns/prov#value | - The light-emitting layer comprises phosphor particles 33 (particle size generally is in the range of 30 nm to 5 ??m, preferably 50 nm to 2 ??m) dispersed in a dielectric material phase 35, and shows a light-scattering property. [0181] By applying an alternating voltage (several tens V to several hundreds V, frequency 30 Hz to 10 KHz, the waveform is optional but preferably is a sine wave) between
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