US 12,073,762 B2
Pixel driving circuit, pixel driving method, display panel and display device
Lijun Yuan, Beijing (CN); Can Zhang, Beijing (CN); Ning Cong, Beijing (CN); Wei Li, Beijing (CN); Can Wang, Beijing (CN); Jinfei Niu, Beijing (CN); Jingjing Zhang, Beijing (CN); and Minghua Xuan, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Jun. 7, 2023, as Appl. No. 18/206,715.
Application 18/206,715 is a continuation of application No. 17/530,853, filed on Nov. 19, 2021, granted, now 11,694,597.
Claims priority of application No. 202110307960.2 (CN), filed on Mar. 23, 2021.
Prior Publication US 2023/0335036 A1, Oct. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2092 (2013.01) [G09G 2300/0426 (2013.01); G09G 2310/0278 (2013.01); G09G 2310/061 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A pixel driving circuit, comprising:
a current control sub-circuit coupled to a scan signal terminal, a gray scale data signal terminal, a first voltage signal terminal, and an enable signal terminal; the current control sub-circuit being configured to output a gray scale current signal to an element to be driven, according to a gray scale data signal from the gray scale data signal terminal, under the control of a scan signal from the scan signal terminal and an enable signal from the enable signal terminal;
a gating sub-circuit coupled to the scan signal terminal, a reset signal terminal, a gating data signal terminal, and a pulse voltage signal terminal; the gating sub-circuit being configured to drive the element to be driven to continuously emit light, under the control of the scan signal from the scan signal terminal and a gating data signal from the gating data signal terminal, and to drive the element to be driven to intermittently emit light, under the control of a reset signal from the reset signal terminal, the gating data signal from the gating data signal terminal and a pulse voltage signal from the pulse voltage signal terminal;
wherein the gating sub-circuit comprises:
a first gating unit coupled to the scan signal terminal and the gating data signal terminal; the first gating unit being configured to drive the element to be driven to continuously emit light, under the control of the scan signal from the scan signal terminal and the gating data signal from the gating data signal terminal;
a second gating unit coupled to the reset signal terminal, the gating data signal terminal, and the pulse voltage signal terminal; the second gating unit being configured to drive the element to be driven to intermittently emit light, under the control of the reset signal from the reset signal terminal, the gating data signal from the gating data signal terminal and the pulse voltage signal from the pulse voltage signal terminal; and
wherein the second gating unit comprises:
a second data writing sub-unit coupled to the reset signal terminal, the gating data signal terminal, and a second node; the second data writing sub-unit being configured to transmit the gating data signal from the gating data signal terminal to the second node under the control of the reset signal from the reset signal terminal;
a second storage sub-unit coupled to an initialization signal terminal and the second node; the second storage sub-unit being configured to store a voltage at the second node;
a second control sub-unit coupled to the second node and the pulse voltage signal terminal; the second control sub-unit being configured to drive the element to be driven to intermittently emit light, under the control of the voltage at the second node and the pulse voltage signal from the pulse voltage signal terminal.