US 11,749,202 B2
Display panel having a pixel driving circuit with different transistor types
Qian Yang, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/638,892
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Apr. 20, 2021, PCT No. PCT/CN2021/088329
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/227788, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 202010392539.1 (CN), filed on May 11, 2020.
Prior Publication US 2022/0310017 A1, Sep. 29, 2022
Int. Cl. G09G 3/3258 (2016.01); G09G 3/3291 (2016.01)
CPC G09G 3/3258 (2013.01) [G09G 3/3291 (2013.01); G09G 2300/0819 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A pixel driving circuit, comprising:
a data-writing circuit, a driving circuit, a light-emitting control circuit, a compensation circuit, and a storage circuit, wherein:
the data-writing circuit is coupled to the driving circuit for writing a data signal to the driving circuit;
the driving circuit is coupled to a first power supply end and a light-emitting sub-circuit through the light-emitting control circuit for inputting a driving current to the light-emitting sub-circuit according to the data signal under control of the light-emitting control circuit;
the compensation circuit is coupled to the driving circuit;
the storage circuit is coupled between the first power supply end and the driving circuit; and
the data-writing circuit and the compensation circuit together comprise at least two transistors, wherein, in the data-writing circuit and the compensation circuit, at least one transistor is a low temperature polysilicon transistor, and at least one transistor is an oxide transistor; wherein:
the data-writing circuit is connected to a data signal end, a gate driving signal end and a first node, for transmitting a signal of the data signal end to the first node in response to a signal of the gate driving signal end;
the driving circuit is connected to the first node, a second node, and a third node, for inputting the driving current to the second node according to a signal of the first node;
the light-emitting control circuit is connected to the third node, the second node, the first power supply end, a fourth node and an enable signal end, for transmitting a signal of the first power supply end to the third node in response to a signal of the enable signal end, and for transmitting a signal of the second node to the fourth node in response to the signal of the enable signal end;
the compensation circuit is connected to the first node, the second node and a reset signal end, for transmitting a signal of the reset signal end to the first node and the second node in response to the signal of the reset signal end;
the storage circuit comprises a first storage circuit and a second storage circuit;
the first storage circuit is connected between the first node and the third node;
the second storage circuit is connected between the third node and the first power supply end; and
the light-emitting sub-circuit is connected between the fourth node and a second power supply end.