US 11,869,416 B2
Display device using semiconductor light-emitting element
Byunghun Park, Seoul (KR); Sunghwan Kim, Seoul (KR); and Hongkyu Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/798,617
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Feb. 17, 2020, PCT No. PCT/KR2020/002196
§ 371(c)(1), (2) Date Aug. 10, 2022,
PCT Pub. No. WO2021/162154, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 10-2020-0016568 (KR), filed on Feb. 11, 2020.
Prior Publication US 2023/0095418 A1, Mar. 30, 2023
Int. Cl. G06F 3/0354 (2013.01); G09G 3/32 (2016.01); G09G 3/00 (2006.01)
CPC G09G 3/32 (2013.01) [G09G 3/035 (2020.08); G09G 2300/0408 (2013.01); G09G 2300/0857 (2013.01); G09G 2310/0243 (2013.01); G09G 2310/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device comprising:
a plurality of semiconductor light-emitting elements disposed on a substrate;
flip-flops to apply an electric signal to the plurality of semiconductor light-emitting elements to allow the plurality of semiconductor light-emitting elements to maintain a light-emitting state for a predetermined time period;
scan electrodes and data electrodes electrically connected to each of the flip-flops, respectively; and
a driver that generates frame synchronization signals at a predetermined time interval of one frame and generates sub-field signals at a constant subfield time period obtained by dividing the predetermined time interval of one frame by a predetermined number, receives data packets corresponding to the one frame for a time corresponding to a multiple of the predetermined number of subfield time periods, and applies a voltage to a scan electrode and a data electrode from among the scan electrodes and the data electrodes based on the data packets.
wherein,
the sub-field signals generated during the predetermined time interval of one frame are generated so as not to be synchronized with the frame synchronization signals, and
when a frame synchronization signal from among the frame synchronization signals is generated during a time period from a time point at which a sub-field signal from among the sub-field signals is generated to a time point at which a next sub-field signal is generated, the driver prevents a voltage from being applied to the data electrodes by separately allocating extra bits for the time period from the time point at which the sub-field signal is generated to the time point at which the next sub-field signal is generated.