Display device with face plate responsive to multiple wave length beams

摘要

A planar display device having a fast display reaction time and which can have a large screen size but which is thin and light in weight. A face plate is provided which contains fluorescent materials sensitive to three different wavelengths of invisible ultraviolet rays and which emit light in red, green and blue colors in response to stimulation by rays of the three wavelengths. The three fluorescent materials may be stacked together in layers or mixed in a single layer with a binder, and a wavelength-converting layer may be employed.