39.1: Adaptive Dimming and Boosting Backlight for LCD-TV Systems

摘要: The limited transmittance of LCD panels can be observed as a waste energy, leading to brightness. Light leaking through driven black, poor black-level, limiting the contrast ratio. Adaptive Dimming Backlight technology applied attenuate backlight luminance, improving local contrast, black-level and saving power. The optical crosstalk between controllable segments has negative impact on dimming performance, spatial luminance modulation. Crosstalk Compensation partly compensate this artifact, enhancing modulation segments. Adaptive Boosting boost output panel over 100%. This improves brightness for sparkling picture, still power. Crosstalk compensation enables deeper dimming. Deeper more boosting an even brighter picture. So when these technologies are combined: □ The may increase up 5 times (CCFL/EEFL). □ The double 20 (HCFL). □ Alternatively, 2D-Dimming factor 100 temporal infinite (LED). At same time, 50% average power saved!