| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive electric field luminescent light of high luminance and high insulation voltage in which a reflection insulating layer is unnecessary. SOLUTION: On a transparent electrode 1b of the ITO or the like which has been formed on a transparent film 1a, a luminous layer 2 where a phosphor formed by activating zinc sulfide by copper is dispersed in a resin. The weight ratio of phosphor to the resin is 2.5 to 4.5, and the film thickness of luminous layer is 40 to 50μm. On the luminous layer 2, a rear face electrode 3 consisting of metal powder, white filler, and resin is printed and formed, and an insulation protective layer 4 is printed and formed to make the electric field luminescent light.
|
