US 12,142,218 B2
Pixel circuit, display panel, and display apparatus
Xinshe Yin, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed on Sep. 9, 2023, as Appl. No. 18/464,216.
Application 18/464,216 is a continuation of application No. 17/044,280, granted, now 11,790,844, previously published as PCT/CN2020/082372, filed on Mar. 31, 2020.
Claims priority of application No. 201910531896.9 (CN), filed on Jun. 19, 2019.
Prior Publication US 2023/0419905 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/3233 (2016.01); G09G 3/3266 (2016.01); G09G 3/3291 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 3/3266 (2013.01); G09G 3/3291 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0866 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/061 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/045 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A pixel circuit comprising:
a driving sub-circuit, the driving sub-circuit comprising:
a first end being connected to a first power line;
a control end being connected to a first node; and
a second end being connected to a second node;
a compensation sub-circuit connected to the first node, the second node, a light emission control signal line, a scanning signal line, and a data signal line;
wherein:
the light emission control signal line is configured to receive one of a first voltage and a reference voltage;
the scanning signal line is configured to receive one of a first control voltage and a second control voltage;
the data signal line is configured to receive one of a data voltage and the reference voltage, and the first power line is configured to receive one of a reset voltage and a first power voltage;
the compensation sub-circuit is configured to be under control of the reference voltage received from the light emission control signal line, the first control voltage received from the scanning signal line, and the reference voltage received from the data signal line;
when the first power line receives the first power voltage, a threshold voltage of the driving sub-circuit is compensated;
the pixel circuit further comprises:
a light-emitting diode having a first end and a second end, the first end of the light-emitting diode being connected to the second node, and the second end of the light-emitting diode being connected to a second power line;
wherein the second power line is configured to receive one of the first power voltage and a second power voltage; and
wherein the light-emitting diode comprises a device capacitor having a first terminal and a second terminal respectively connected to the first end and the second end;
wherein the compensation sub-circuit further comprises:
a storage capacitor, the storage capacitor having a first end being connected to the light emission control signal line, and the storage capacitor having a second end being connected to the first node;
a first switch transistor having a control electrode being connected to the scanning signal line, the first switch transistor having a first electrode being connected to the second node, and the first switch transistor having a second electrode being connected to the second node; and
a first capacitor, the first capacitor having a first end being connected to the second node, and the first capacitor having a second end being connected to the data signal line.