| abstract |
In a fluorescent display device having an anode voltage of about 2 kV or less, a phosphor having excellent luminance characteristics without adversely affecting a cathode is provided.n n n SrTiO 3 : Pr, (X = Al, a etc. ), a low-resistance phosphor, and Y 2 O 3 : Eu, a high-resistance phosphor, are mixed at different mixing ratios. Y 2 O 3: Eu and the phosphor and the In 2 O 3 to the mixed phosphor changing the mixing ratio in the comparative example. In the fluorescent display device of the same structure, each phosphor is made to emit light under the same driving conditions, and the relative luminance is compared. In each mixing ratio, this example is superior in light emission luminance than the comparative example. In particular, good results were obtained at 2/98 to 90/10, and more preferable results were obtained at 20/80 to 50/50. The phosphor of this example can be used as a red phosphor in a full-color fluorescent display device closer to the red emission color of SrTiO 3 : Pr and X phosphors than the Y 2 O 3 : Eu phosphor which is slightly orange. |