| CPC G09G 3/3426 (2013.01) [G09G 2320/064 (2013.01)] | 20 Claims |
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1. A method for driving a backlight unit (BLU), the method comprising:
controlling a first switch and a second switch to alternately open and close based on a vertical synchronization signal of a current frame;
closing the first switch at a first time point in the current frame;
based on the first switch being closed and the second switch being open:
generating, by a first pixel integrated circuit (PIC), a first pulse modulation signal based on a first packet output from a pixel driver integrated circuit (PDIC) and applying the first pulse modulation signal to a first backlight unit (BLU) line connected to the first PIC and corresponding to a first light emitting diode; and
generating, by a second PIC, a second pulse modulation signal based on a second packet output from the PDIC and applying the second pulse modulation signal to a second BLU line connected to the second PIC and corresponding to a second light emitting diode;
closing the second switch at a second time point in the current frame; and
based on the second switch being closed and the first switch being open:
generating, by the first PIC, a third pulse modulation signal based on the first packet output from the PDIC and applying the third pulse modulation signal to a third BLU line connected to the first PIC and corresponding to a third light emitting diode; and
generating, by the second PIC, a fourth pulse modulation signal based on the second packet output from the PDIC and applying the fourth pulse modulation signal to a fourth BLU line connected to the second PIC and corresponding to a fourth light emitting diode.
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