Light emitting device and electronic apparatus using the same

A method for driving a light-emitting device comprising:

• controlling input of a video signal to a pixel;
• selecting whether a current is supplied to a light emitting element or not by the video signal;
• controlling a value of the current supplied by the selection that the current is supplied to the light emitting element;
• and
• supplying the current to the light emitting element with the value of the current controlled,
• wherein the controlling of the value of the current is effected by a transistor operating in a saturation region.

A method for driving a light-emitting device comprising:

• controlling input of a video signal to a pixel;
• selecting whether a current is supplied to a light emitting element or not by the video signal;
• controlling a value of the current supplied by the selection that the current is supplied to the light emitting element;
• and
• supplying the current to the light emitting element with the value of the current controlled,
• wherein the selection is effected by a first transistor operating in a linear region, and
• wherein the controlling of the value of the current is effected by a second transistor operating in a saturation region.

A method for driving a light-emitting device comprising:

• controlling input of a video signal to a pixel;
• selecting whether a current is supplied to a light emitting element or not by the video signal;
• controlling a value of the current supplied by the selection that the current is supplied to the light emitting element;
• and
• supplying the current to the light emitting element with the value of the current controlled,
• wherein a first transistor operating in a linear region is connected in series with a second transistor operating in a saturation region,
• wherein the selection is effected by the first transistor operating in the linear region, and
• wherein the controlling of the value of the current is effected by the second transistor operating in the saturation region.

A method for driving a light-emitting device comprising:

• controlling input of a video signal to a pixel;
• selecting whether a current is supplied to a light emitting element or not by the video signal;
• controlling a value of the current supplied by the selection that the current is supplied to the light emitting element;
• and
• supplying the current to the light emitting element with the value of the current controlled,
• wherein one of a source and a drain of a first transistor operating in a linear region is connected with one of a source and a drain of a second transistor operating in a saturation region,
• wherein the selection is effected by the first transistor operating in the linear region, and
• wherein the controlling of the value of the current is effected by the second transistor operating in the saturation region.