Display device having a capacitor including a capacitor electrode integrally formed with a gate electrode of a transistor

A display device comprising:

• a substrate;
• a first voltage line in a first metal layer on the substrate;
• a first transistor comprising:
• a drain electrode in an active layer on the first metal layer and electrically connected to the first voltage line, an active region adjacent to the drain electrode, a source electrode adjacent to the active region, and a gate electrode in a second metal layer on the active layer;
• a first capacitor comprising:
• a first capacitor electrode integrally formed with the gate electrode of the first transistor and having a closed-loop shape, and a second capacitor electrode in the first metal layer and overlapping with the first capacitor electrode;
• and
• a first connection electrode,
• wherein the first connection electrode is in a third metal layer on the second metal layer, the first connection electrode is connected to the source electrode of the first transistor through a first contact hole, and the first connection electrode is connected to the second capacitor electrode through a second contact hole.

A display device comprising:

• a first data line, a second data line, and a third data line extending in parallel on a substrate;
• a pixel circuit of a first pixel configured to receive a data voltage from the first data line;
• a pixel circuit of a second pixel configured to receive a data voltage from the second data line;
• a pixel circuit of a third pixel configured to receive a data voltage from the third data line and located between the pixel circuit of the first pixel and the pixel circuit of the second pixel;
• and
• a light-emitting element of the third pixel configured to receive a driving current from the pixel circuit of the third pixel,
• wherein the pixel circuit of the third pixel comprises:
• a first transistor connected between a first voltage line and the light-emitting element of the third pixel;
• a first connection electrode electrically connecting a source electrode of the first transistor with the light-emitting element of the third pixel;
• a first capacitor comprising:
• a first capacitor electrode integrally formed with a gate electrode of the first transistor and a second capacitor electrode connected to the first connection electrode;
• a second transistor electrically connecting the third data line with the first capacitor electrode;
• and
• a second connection electrode electrically connecting the first capacitor electrode with a source electrode of the second transistor,
• wherein the second connection electrode is connected to the source electrode of the second transistor through a first contact hole, wherein the first capacitor electrode surrounds only three sides of the first contact hole,
• wherein the first connection electrode is between the pixel circuit of the first pixel and the second connection electrode, and the first connection electrode is between the pixel circuit of the second pixel and the second connection electrode, and
• wherein a first capacitor electrode of the second pixel has a shape in which a third side opposite to a second side is open.