| 摘要 |
PROBLEM TO BE SOLVED: To display a bright image high in contrast in an image display device using phosphor particles. SOLUTION: The image display device 100 is constituted of a plurality of pixels 102 arranged at an inner face side of a front plate 101 with translucency. Each pixel includes a light emission layer 104 in which phosphor particles 105 are dispersed in a background medium 106 having the same refractive index as that of the phosphor particle, an excitation source 103 exciting the phosphor particles to make them emit light, and a refractive index distribution structure 107 arranged between the front plate and the light emission layer and having a periodic refractive index distribution in a direction along an inner surface of the front plate. COPYRIGHT: (C)2011,JPO&INPIT
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