Display device

A display device, comprising:

• a plurality of pixels, wherein
• the pixels each include a display element and a pixel circuit that controls a voltage supplied to the display element,
• the pixel circuit includes
• a capacitor that holds a charge according to the voltage supplied to the display element,
• a charge/discharge circuit that charges and discharges the capacitor, and
• a control circuit that controls the charge/discharge circuit,
• the charge/discharge circuit includes
• a first switching element that controls charging of the capacitor and
• a second switching element that controls discharging of the capacitor, and
• the control circuit includes a third switching element that controls on or off of at least one of the first switching element and the second switching element on a basis of at least one of pixel data or a display timing signal,
• wherein the first switching element, the second switching element, and the third switching element are cascode-connected between a first reference voltage node and a second reference voltage node, and
• wherein the capacitor is connected between a connection node between the first switching element and the second switching element and the second reference voltage node.

A display device, comprising:

• a plurality of pixels, wherein
• the pixels each include a display element and a pixel circuit that controls a voltage supplied to the display element,
• the pixel circuit includes
• a capacitor that holds a charge according to the voltage supplied to the display element,
• a charge/discharge circuit that charges and discharges the capacitor, and
• a control circuit that controls the charge/discharge circuit,
• the charge/discharge circuit includes
• a first switching element that controls charging of the capacitor and
• a second switching element that controls discharging of the capacitor,
• the control circuit includes a third switching element that controls on or off of at least one of the first switching element and the second switching element on a basis of at least one of pixel data or a display timing signal,
• wherein the control circuit generates a control signal to be input to a gate of at least one of the first switching element and the second switching element on a basis of the pixel data and the display timing signal,
• wherein a precharge signal is input to one of gates of the first switching element and the second switching element, and the control signal is input to another gate;
• and
• a first drive circuit that sets a voltage level of the precharge signal in consideration of a threshold voltage of the first switching element or the second switching element,
• wherein one of:
• (1) the first switching element and the second switching element are N-type metal oxide semiconductor (MOS) transistors,
• a drain of the first switching element is connected to a first reference voltage node,
• one end of the capacitor is connected to a source of the first switching element, and
• the first drive circuit sets the voltage level of the precharge signal to a voltage higher than a voltage of the first reference voltage node by the threshold voltage so that the source of the first switching element has a same voltage level as the first reference voltage node when the capacitor is charged;
• or
• (2) the first switching element and the second switching element are P-type metal oxide semiconductor (MOS) transistors,
• a source of the first switching element is connected to a first reference voltage node,
• a drain of the second switching element is connected to a second reference voltage node,
• one end of the capacitor is connected to a drain of the first switching element, and
• the first drive circuit sets the voltage level of the precharge signal to a voltage lower than a voltage of the second reference voltage node by the threshold voltage so that the drain of the first switching element has a same voltage level as the second reference voltage node when the capacitor is discharged.