Light emitting device, method of driving a light emitting device, element substrate, and electronic equipment

A method of driving a light emitting device that has a plurality of pixels each including a light emitting device,

• wherein, in a first period, a current determined by a video signal is supplied to the pixels, and first means of each of the pixels converts the supplied current into a voltage to supply a first current to the light emitting element in an amount according to the voltage converted, and
• wherein, in a second period, the first means of each of the pixels supplies a third current to the light emitting element in an amount according to the voltage converted, and second means of each of the pixels supplies a second current to the light emitting element in an amount according to the voltage converted.

A method of driving a light emitting device with one frame period having a first period and a second period,

• wherein, in the first and second periods, a first transistor and second transistor of the light emitting device are connected to each other at their gates and a constant voltage is applied to sources of the first and second transistors,
• wherein, in the first period, the gate of the first transistor is connected to a drain of the first transistor and a drain of the second transistor is connected to a pixel electrode of a light emitting element, and
• wherein, in the second period, the drains of the first and second transistors are connected to the pixel electrode of the light emitting element and the gate of the first transistor is disconnected from the drain of the first transistor.

A method of driving a light emitting device with one frame period having a first period and a second period,

• wherein, in the first and second periods, a first transistor and second transistor of the light emitting device are connected to each other at their gates, a source of the first transistor and a source of the second transistor are connected to each other, and a constant voltage is applied to a drain of the first transistor,
• wherein, in the first period, a drain of the second transistor is set to a floating state, and the gate of the first transistor is connected to the drain of the first transistor, and
• wherein, in the second period, the constant voltage is applied to the drain of the second transistor, the gate of the first transistor is disconnected from the drain of the first transistor, and the sources of the first and second transistors are connected to a pixel electrode of a light emitting element.

A method of driving a light emitting device with one frame period having a first period and a second period,

• wherein, in the first and second periods, a first transistor and second transistor of the light emitting device are connected to each other at their gates, a drain of the first transistor and a drain of the second transistor are connected to each other, and a constant voltage is applied to the drains of the first and second transistors,
• wherein, in the first period, the gates of the first and second transistors are connected to the drains of the first and second transistors, and
• wherein, in the second period, sources of the first and second transistors are connected to a pixel electrode of a light emitting element.

A method of driving a light emitting device with one frame period having a first period and a second period,

• wherein, in the first and second periods, a first transistor and second transistor of the light emitting device are connected to each other at their gates, and a source of the first transistor and a source of the second transistor are connected to each other,
• wherein, in the first period, a constant voltage is applied to the gate and drain of the first transistor, a drain of the second transistor is set to a floating state, and a drain current of the first transistor is controlled by a constant current source, and
• wherein, in the second period, the gate of the first transistor is disconnected from the drain of the first transistor, a constant voltage is applied to the drains of the first and second transistors, and a drain current of the first transistor and a drain current of the second transistor both flow into a light emitting element.

A method of driving a light emitting device with one frame period having a first period and a second period,

• wherein, in the first and second periods, a first transistor and second transistor of the light emitting device are connected to each other at their gates, and a drain of the first transistor and a drain of the second transistor are connected to each other,
• wherein, in the first period, a constant voltage is applied to the gates of the first and second transistors and to the drains of the first and second transistors, and a drain current of the first transistor is controlled by a constant current source, and
• wherein, in the second period, the gate of the first transistor is disconnected from the drain of the first transistor, the gate of the second transistor is disconnected from the drain of the second transistor, a constant voltage is applied to the drains of the first and second transistors, and a drain current of the first transistor and a drain current of the second transistor both flow into a light emitting element.

A method of driving a light emitting device with one frame period having a first period and a second period,

• wherein, in the first and second periods, a first transistor and second transistor of the light emitting device are connected to each other at their gates, and a constant voltage is applied to sources of the first and second transistors,
• wherein, in the first period, the gate of the first transistor is connected to a drain of the first transistor, a drain of the second transistor is connected to a pixel electrode of a light emitting element, and a drain current of the first transistor is controlled by a constant current source, and
• wherein, in the second period, the gates of the first and second transistors are connected to a gate of a third transistor of the light emitting device, the first transistor and the third transistor have the same amount of drain current, and a drain current of the second transistor and a drain current of the third transistor both flow into the light emitting element.

A method of driving a light emitting device with one frame period having a first period and a second period,

• wherein, in the first and second periods, a first transistor and second transistor of the light emitting device are connected to each other at their gates, and a source of the first transistor and a source of the second transistor are both connected to a pixel electrode of a light emitting element,
• wherein, in the first period, the gate of the first transistor is connected to a drain of the first transistor, a constant voltage is applied to a drain of the second transistor, and a drain current of the first transistor is controlled by a constant current source, and
• wherein, in the second period, the gates of the first and second transistors are connected to a gate of a third transistor of the light emitting device, the drain of the first transistor is connected to a source of the third transistor, a constant voltage is applied to a drain of the third transistor and to the drain of the second transistor, and a drain current of the second transistor and a drain current of the third transistor both flow into the light emitting element.