Cheat Sheet: Dolby High Dynamic Range Technologies
Traditional LCD TVs with cold cathode fluorescent lamps can produce low contrast ratios due to the fact that the entire panel is lit up fully 100 percent of the time. The liquid crystals are not able to completely filter out all of the back light and allow some light to
leak through. In addition, a CCFL display’s power consumption remains constant no matter how bright or dark the displayed image is. CCFLs contain some mercury, making them less “green” than LED-based displays.
What are its primary benefits?
The primary benefits of Dolby HDR and LED displays in general are increased contrast, increased dynamic range and reduced power consumption. The contrast or black level of CCFL LCD TVs can be perceptively improved by dimming the backlight, but that affects the entire screen and reduces the overall dynamic range.