Electronic device and method for backlighting LCD display to provide different display definitions

摘要

Electronic device and a method for backlighting a liquid crystal display (LCD) display to provide different display definitions, the LCD display includes a backlight unit composed of one or more backlighting blocks. The method determines a display definition of a video image and illuminates or turns off backlighting blocks of the backlight unit to display the video image accordingly. The video image is displayed in full screen by all backlighting blocks if the video image is an ultra high definition (UHD) image, and turns on a smaller number of the backlighting blocks to display the video image if the video image has other than UHD display definition. As such, the electronic device is controlled to save power consumption in different display definitions of the LCD display.

主权项

1. An electronic device, comprising:
a liquid crystal display (LCD) display comprising a backlight unit, the backlight unit comprising a plurality of backlighting blocks, each of the backlighting blocks comprising a plurality of light emitting diodes (LEDs) for providing light source to backlight the LCD display; at least one processor; and a storage device storing a computer-readable program comprising instructions, which when executed by the at least one processor, that cause the at least one processor to: determine whether a video image is an ultra high definition (UHD) image when the video image is received by the LCD display; confirm that the video image is displayed on the LCD display in full screen if the video image is the UHD image, and initialize all backlighting blocks of the backlight unit to backlight the LCD display; determine a display area of the LCD display for displaying the video image according to a definition of the video image if the video image is not the UHD image, and determine backlighting blocks of the backlight unit corresponding to the determined display area; control the backlighting blocks of the determined display area to provide backlight for the LCD display; and display the video image on the determined display area of the LCD display.