Patent ID: 11875755
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 19:
20. A method of driving a light emitting diode (LED) backlight unit, the LED backlight unit including a plurality of LED elements that are connected to a plurality of gate lines and a plurality of source lines, the method comprising:
activating a first gate signal of a plurality of gate signals applied to a first gate line among the plurality of gate lines during a first gate-on interval;
outputting, while the first gate signal is activated, a first source signal to generate a first driving current supplied to a first LED element among the plurality of LED elements, the first LED element being connected to the first gate line and being connected to a first source line among the plurality of source lines;
activating, during a second gate-on interval after the first gate-on interval, a second gate signal of the plurality of gate signals applied to a second gate line among the plurality of gate lines, the second gate line being adjacent to the first gate line;
outputting, while the second gate signal is activated, the first source signal to generate a second driving current supplied to a second LED element among the plurality of LED elements, the second LED element being connected to the second gate line and being connected to the first source line;
deactivating, during a first non-overlap interval between the first gate-on interval and the second gate-on interval, all of the plurality of gate signals applied to the plurality of gate lines; and
controlling, during a first high-impedance interval exclusively in the first non-overlap interval, the first source signal, such that the first source signal has a high-impedance state,
wherein the first and second LED elements are configured to maintain a light-emitting state subsequent to the first and second gate signals being deactivated subsequent to the first and second gate-on intervals, and
wherein at least one of a starting time point, an ending time point, or a length of the first high-impedance interval is changeable.