Methods, Systems, Devices and Components for Reducing Power Consumption in an LCD Backlit by LEDs

摘要

Disclosed are various embodiments of methods, systems, devices and components nets for reducing power consumption in an LCD display that is backlit by LEDs. The various embodiments typically require the use of an array of backlighting LEDs 16 disposed beneath and configured to emit light in the direction of an overlying LCD or LCD panel 12. In such an array, some LEDs 16a are operated or driven at a first brightness, while other LEDs 16b are operated or driven at a second brightness that is different from the first brightness, or at no brightness at all (i.e., such LEDs are turned off). LED brightnesses and therefore backlighting brightnesses over different portions of display or screen 10 are varied and determined in accordance with the portion of display or screen 10 that a user or processor has selected for viewing (“the area of interest”). Any number of different predetermined criteria may be employed to determine or select the portion of display or screen 10 that is to be presented at an increased brightness is to the user for viewing.