US 12,424,180 B2
Driving method and apparatus for light-emitting substrate, and driving chip and timing control board
Dayu Zhang, Beijing (CN); Xinchen Ma, Beijing (CN); and Zhiwei Zhang, Beijing (CN)
Assigned to HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Anhui (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/724,196
Filed by HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Anhui (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Sep. 23, 2022, PCT No. PCT/CN2022/120772
§ 371(c)(1), (2) Date Jun. 26, 2024,
PCT Pub. No. WO2023/124301, PCT Pub. Date Jul. 6, 2023.
Claims priority of application No. 202111645608.6 (CN), filed on Dec. 29, 2021.
Prior Publication US 2025/0157422 A1, May 15, 2025
Int. Cl. G09G 3/20 (2006.01); G09G 3/34 (2006.01)
CPC G09G 3/3426 (2013.01) [G09G 3/2096 (2013.01); G09G 2320/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A driving method for a light-emitting substrate, wherein the light-emitting substrate comprises at least one light-emitting unit cluster, and N light-emitting unit groups in a light-emitting unit cluster are electrically connected to N first signal lines, respectively; M light-emitting units in a light-emitting unit group are electrically connected to M second signal lines, respectively; and the N light-emitting unit groups in the light-emitting unit cluster are connected to the same M second signal lines, N and M being both positive integers;
within a frame period, the N first signal lines provide driving signals to the N light-emitting unit groups in time-division to cause the N light-emitting unit groups to be in a writing phase in time-division; and within a writing phase of the light-emitting unit group, the M second signal lines provide light-emitting data signals to the M light-emitting units in the light-emitting unit group, simultaneously;
the driving method comprises:
receiving a frequency modulation signal;
generating a frequency modulation synchronization signal corresponding to the frequency modulation signal;
generating an auxiliary synchronization signal in a case where a rising edge of the frequency modulation synchronization signal is in a writing phase of a light-emitting unit group to which light-emitting data signals are last written in a previous frame period; and
controlling, based on the auxiliary synchronization signal, a writing phase of a light-emitting unit group to which light-emitting data signals are to be first written in a current frame period to be staggered with the writing phase of the light-emitting unit group to which the light-emitting data signals are last written in the previous frame period;
wherein the light-emitting unit group to which the light-emitting data signals are last written in the previous frame period belongs to a same light-emitting unit cluster as the light-emitting unit group to which the light-emitting data signals are to be first written in the current frame period.