A 34-inch Flat-Panel TV Fabricated by Combining Inorganic EL and Color-Conversion Technologies

Abstract

A 34-inch inorganic EL panel for a high-definition TV with a simple structure has been successfully developed by combining color-conversion materials and BaAl2S4: Eu blue phosphor. The luminance and maximum efficacy of the blue phosphor devices are higher than 2,300 cd/m2 for applied AC voltage of threshold-voltage plus 60 V at operation frequency of 120 Hz and 2.5 lm/W, respectively. The panels, which were fabricated using these technologies, achieved a peak luminance of over 400 cd/m2, a color gamut of larger than 95% of the NTSC color area in CIE (x, y), and a wide viewing angle.