High Dynamic Range LCD TV Using Active Dynamic LED Backlight

摘要

A 32 inch high dynamic LCD TV using LED backlight is demonstrated. The LCD TV dynamically manipulates the brightness and color of individual LEDs to largely enhance the display contrast and save the power consumption. Preliminary results indicate the contrast can be up to 50 000:1, with maximum luminance of 500 cd/ra2. Compared with the static LED backlight, up to 70% of the power can be saved depending on the average picture level (APL) of the image. The lower power consumption in the HDR TV system reduces the complexity of the thermal management design so that the backlight module is heatsink-free.