Semiconductor device

A semiconductor device comprising:

• a plurality of pixels each comprising:
• a light emitting element;
• a protection circuit;
• a first transistor for controlling the amount of current flowing in the light emitting element;
• and
• a second transistor for controlling a current supply to the light emitting element in accordance with a video signal,
• wherein the light emitting element, the protection circuit, the first transistor, and the second transistor are connected in series between a first power supply and a second power supply, and
• the protection circuit is a resistor element connected in series to a pixel electrode.

A semiconductor device comprising:

• a plurality of pixels each comprising:
• a light emitting element;
• a protection circuit;
• a first transistor for controlling the amount of current flowing in the light emitting element;
• and
• a second transistor for controlling a current supply to the light emitting element in accordance with a video signal,
• wherein the light emitting element, the protection circuit, the first transistor, and the second transistor are connected in series between a first power supply and a second power supply, and
• the protection circuit is a capacitor element which discharges or charges electric charges built up on a pixel electrode.

A semiconductor device comprising:

• a plurality of pixels each comprising:
• a light emitting element;
• a protection circuit;
• a first transistor for controlling the amount of current flowing in the light emitting element;
• and
• a second transistor for controlling a current supply to the light emitting element in accordance with a video signal,
• wherein the light emitting element, the protection circuit, the first transistor, and the second transistor are connected in series between a first power supply and a second power supply,
• the protection circuit is a protection transistor whose gate electrode and drain electrode are connected to each other, and
• the drain electrode or a source electrode of the protection transistor is connected to the first power supply.

A semiconductor device comprising:

• a plurality of pixels each comprising:
• a light emitting element;
• a protection circuit;
• a first transistor for controlling the amount of current flowing in the light emitting element;
• and
• a second transistor for controlling a current supply to the light emitting element in accordance with a video signal,
• wherein the light emitting element, the protection circuit, the first transistor, and the second transistor are connected in series between a first power supply and a second power supply, and
• the protection circuit is a diode one electrode of which is connected to a pixel electrode and the other electrode of which is connected to a third power supply.