Pixel circuit and display device

Abstract

Provided are a pixel circuit and a display device which support multi-gradation display and can prevent display quality from deteriorating with low power consumption. A pixel circuit () includes a first switch circuit () provided between a pixel node Np of a display element unit () and a data signal line SL, and a memory circuit () which restores the pixel node to an initial voltage state, based on a hold voltage stored in a storage node Nm. The memory circuit () includes a transistor Thaving a gate electrode connected to the storage node Nm, and a source electrode connected to the pixel node Np; a second switch circuit () which controls a conducting state between a drain electrode of the transistor Tand a voltage supply line VSL, in response to a signal level of a first control signal line SWL; a third switch circuit () which controls a conducting state between the drain electrode and the gate electrode of the transistor T, in response to a signal level of a second control signal line CSL; and a capacitor element Cst provided between the storage node Nm and the voltage supply line VSL.