Patent ID: 9691328
Date: 2017-06-27
CPC Classifications: G09G

Claim:
1. A pixel driving circuit for driving a light-emitting element, comprising: a light-emitting control signal line configured to provide a light-emitting control signal; a driving unit having an input end connected to a first intermediate node, a control end connected to a third intermediate node, and an output end connected to one end of the light-emitting element, wherein the light-emitting element has the other end connected to a first power line; a first switch unit having an input end connected to a second power line, a control end connected to the light-emitting control signal line, and an output end connected to the first intermediate node; a second switch unit having an input end connected to a reference signal line, a control end connected to a second level of scanning signal lines, and an output end connected to a second intermediate node; a first storage unit having a first end connected to the first intermediate node and a second end connected to the second intermediate node; a second storage unit having a first end connected to the second intermediate node and a second end connected to the third intermediate node; a third switch unit having an input end connected to the third intermediate node, a control end connected to a third level of scanning signal lines, and an output end connected to the second intermediate node; a charging control unit having a first input end connected to the reference signal line, a second input end connected to a data line, a control end connected to the first level of scanning signal lines, a first output end connected to the second intermediate node, and a second output end connected to the third intermediate node; wherein, in a first operation phase of the pixel driving circuit, in a second operation phase of the pixel driving circuit, in a third operation phase of the pixel driving circuit, in a driving phase of the pixel driving circuit,