Display and method of driving the same

A display comprising a video signal line driver, a video signal line connected to the video signal line driver, and a pixel which comprises:

• a drive control element including a control terminal, a first terminal, and a second terminal which outputs a current at a magnitude corresponding to a voltage between the control terminal and the first terminal;
• a capacitor connected between a constant-potential terminal and the control terminal;
• and
• a display element whose optical characteristic changes in accordance with a magnitude of current flowing through the display element, wherein the display is configured to sequentially execute first and second operations, the first operation including making the video signal line driver output a first constant-current to the video signal line for a given length of time while connecting the first terminal to a power supply terminal and connecting the second terminal and the control terminal to the video signal line, and the second operation including making the video signal line driver output a second constant-current to the video signal line while connecting the first terminal to the power supply terminal and disconnecting the second terminal from the video signal line, and
• wherein the display is further configured to control the voltage between the control terminal and the first terminal in accordance with a time period over which the video signal line driver outputs the second constant-current to the video signal line.

A method of driving a display comprising a video signal line, and pixels arranged along the video signal line, each of the pixels comprising a drive control element including a control terminal, a first terminal, and a second terminal which outputs a current at a magnitude corresponding to a voltage between the control terminal and the first terminal, a capacitor connected between a constant-potential terminal and the control terminal, and a display element whose optical characteristic changes in accordance with a magnitude of current flowing through the display element, comprising:

• sequentially executing first and second operations during a write period and executing a display operation during an effective display period following the write period in a case where a grayscale level within a first grayscale range is to be displayed on the pixel, the first operation including making a first constant-current flow through the video signal line for a given length of time while connecting the first terminal to a first power supply terminal and connecting the second terminal and the control terminal to the video signal line, the second operation including making a second constant-current flow through the video signal line in a flow direction of the first constant-current while breaking a connection between the first terminal and the first power supply terminal and/or a connection between the second terminal and the control terminal and connecting the control terminal to the video signal line, and the display operation including making a drive current flow through the display element while breaking the connection between the second terminal and the control terminal and a connection between the control terminal and the video signal line, connecting the first terminal to the first power supply terminal, and connecting the display element between the second terminal and a second power supply terminal;
• and
• causing a difference between grayscale levels within the first grayscale range by changing a time period during which the second constant-current flows through the video signal line.