| 摘要 |
A front dielectric layer and a PDP including the front dielectric layer are taught, and the PDP has a high degree of clarity and color purity obtained by preventing color temperature variance at various viewing angles. The front dielectric layer covers sustain electrodes arranged at predetermined intervals on a front substrate, wherein [(n450/n'450)-(n550/n'550)] is 0.01 or less, [(n550/n'550)-(n630/n'630)] is 0.01 or less, and [(n450/n'450)-(n630/n'630)] is 0.01 or less where n450 is the refractive index of the front dielectric layer at a wavelength of 450 nm, n'450 is the refractive index of the front substrate at a wavelength of 450 nm, n550 is the refractive index of the front dielectric layer at a wavelength of 550 nm, n'550 is the refractive index of the front substrate at a wavelength of 550 nm, n630 is the refractive index of the front dielectric layer at a wavelength of 630 nm, and n'630 is the refractive index of the front substrate at a wavelength of 630 nm.
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