Patent ID: 9367164
Filing Date: 2016-06-14
CPC Classification: G06F,G09G

Claim Text:
1. A pixel circuit comprising a driving transistor, a driving control circuit and a light-emitting circuit, wherein the driving transistor is connected with the driving control circuit and the light-emitting circuit, respectively; the driving control circuit is connected with an input terminal for a first level signal, an input terminal for a second level signal, an input terminal for a first timing control signal, an input terminal for a second timing control signal, an input terminal for a third timing control signal, an input terminal for a second timing control signal of a previous stage of a pixel circuit, an input terminal for a second timing control signal of a next stage of a pixel circuit, the driving transistor and the light-emitting circuit, respectively, and is configured to compensate for a threshold voltage of the driving transistor and control the driving transistor to drive the light-emitting circuit to emit light under control of timing control signals as inputted; and the light-emitting circuit is connected with the input terminal for the third timing control signal, the input terminal for the second level signal, the driving transistor and the driving control circuit, respectively, and is configured to emit light as driven by the driving transistor, under the control of the inputted timing control signal; wherein the pixel circuit further comprises a touch sensing circuit, wherein the touch sensing circuit is connected with the input terminal for the first level signal, the input terminal for the second timing control signal of the previous stage of the pixel circuit and a node A, and is configured to detect a touch signal on a touch screen under a control of the second timing control signal of the previous stage of the pixel circuit; wherein the driving control circuit comprises a fifth transistor, wherein a drain of the fifth transistor is connected with a data line, and a gate of the fifth transistor is connected with the input terminal for the second timing control signal, a source of the fifth transistor is connected to the source of the driving transistor; the fifth transistors is turned on during a touch detecting phase so as to transmit a voltage variation at the node A due to a touch on a touch screen to the data line, and is turned on during a compensating phase to write a data voltage to the source of the driving transistor.