87% & 103% NTSC color Gamut LCD display development with Quantum dot optical filter & KSF coated LED light source against conventional white LED structure
Authors
Umme Rumman
Abstract
Two different techniques are used in this research platform, were the first attempt is using nano
semiconductor-condensed (CdSe) Quantum dot optical filter which works as highly efficient nano-crystals and placed
between the blue (444nm) LED light source and liquid crystal module (LCM) to extend the LCD display NTSC color
volume more than 103%. Apart from the high costly QD filter, low-cost KSF (Potassium Silicofluoride-K2SiF6) compound
material coated on one set blue LED chip and optically placed between reflector film and LCM, act as a main light source
which also emits highly efficient narrow-band pure white light to resonate the liquid crystal module (LCM) and extend
NTSC color gamut percentage of LCD display panel more than 87%. Mentioned methods are not only improving the color
volume but have also improved the overall picture quality (PQ) with low power consumption status of a display panel.
These techniques & optical measurements are verified for both edge and direct type display BLU structure within HD &
FHD resolution.