| CPC G09G 3/342 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0257 (2013.01); G09G 2340/0435 (2013.01)] | 20 Claims |
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1. A display apparatus comprising:
a display panel;
a backlight unit configured to output light;
a backlight driver configured to drive the backlight unit;
a memory configured to store at least one instruction; and
at least one processor operatively connected with the display panel, the backlight unit, the backlight driver, and the memory,
wherein the at least one processor is configured to execute the at least one instruction to:
identify a first output frequency of a sync signal that varies based on a variable refresh rate of an image,
output the sync signal to the backlight driver in a second output frequency that is a higher frequency than the first output frequency, based on predetermined information,
wherein the backlight driver is further configured to;
based on receiving the sync signal in the second output frequency, set a dimming section of the backlight unit corresponding to the variable refresh rate of the image by recognizing only a portion of a plurality of sync signals, received from the at least one processor, as a timing signal for power-cycling the backlight unit, wherein only the portion of the plurality of sync signals is recognized based on the predetermined information; and
drive the backlight unit according to the set dimming section.
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