Display device and driving method thereof

A display device comprising:

• a pixel circuit including a driving element for driving a light emitting element, the driving element comprising:
• an active pattern including:
• first and second effective channels;
• and
• different lengths of a current path,
• wherein the active pattern includes:
• a first active pattern that is bent at least once in a channel region of the driving element;
• and
• a second active pattern branching from the first active pattern in the channel region of the driving element, the second active pattern having a shorter length than the first active pattern,
• wherein the second active pattern includes a horizontal line portion passing through a first point on a left or right side of the channel region,
• wherein the first active pattern passes through a second point on an upper side and a third point on a lower side of the channel region,
• wherein the first active pattern is bent at least once between the second point and the third point, and
• wherein a length of the second active pattern in the channel region is shorter than a length of the first active pattern.

A method for driving a display device, including a pixel circuit including a driving element for driving a light emitting element, a branch point, at which a second effective channel branches from a first effective channel, being located in the driving element, the method comprising:

• applying a data voltage to a gate of the driving element in a data sampling phase;
• and
• supplying an electric current to the light emitting element during a light emitting phase,
• wherein the electric current flows in the first effective channel of the driving element in the data sampling phase,
• wherein the electric current flows in the second effective channel of the driving element in the light emitting phase, and
• a length of the second effective channel is shorter than a length of the first effective channel.

A display device, comprising:

• a pixel circuit including a transistor for driving a light emitting element, the transistor including:
• a first active pattern that is bent at least once in a channel region of the transistor;
• and
• a second active pattern branching from the first active pattern in the channel region of the transistor, the second active pattern having a shorter length than the first active pattern,
• wherein a branch point, at which the second active pattern branches from the first active pattern, is located in the transistor.