US 12,315,431 B2
Display panel and display device
Yuqi Hu, Shanghai (CN); Jujian Fu, Shanghai (CN); and Hao Ding, Shanghai (CN)
Assigned to Shanghai Tianma Microelectronics Co., Ltd., Shanghai (CN)
Filed by Shanghai Tianma Microelectronics Co., Ltd., Shanghai (CN)
Filed on Jun. 20, 2023, as Appl. No. 18/212,054.
Claims priority of application No. 202211090997.5 (CN), filed on Sep. 7, 2022.
Prior Publication US 2023/0335045 A1, Oct. 19, 2023
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0408 (2013.01); G09G 2300/043 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0245 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0247 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display panel, comprising at least one pixel circuit and at least one light-emitting element, wherein the at least one pixel circuit is configured to drive the at least one light-emitting element to emit light;
a pixel circuit of the at least one pixel circuit comprises a drive module and a light emission control module, the drive module is configured to generate a drive current, and the light emission control module is configured to control the drive current to be transmitted to a light-emitting element of the at least one light-emitting element in response to a light emission control signal; and
a display period of the display panel comprises a first display stage and a second display stage;
in the first display stage, an ineffective pulse duration for the light emission control signal is T1; and in the second display stage, an ineffective pulse duration for the light emission control signal is T2; wherein T1>T2; and
wherein the display panel further comprises a first initialization module, the first initialization module is configured to supply a first initialization voltage to a first node, the first node is connected to the light-emitting element, and a control terminal of the first initialization module is used for transmitting the first initialization voltage to the first node in response to a first scan control signal; and
in the first display stage and the second display stage, a period of an effective pulse for the first scan control signal is located within a period of an ineffective pulse for the light emission control signal.