Pixel and display device including the same
A pixel of display device includes a light emitting element, a first transistor coupled between first power source and a second node and having a gate electrode connected to a first node N 1 , and the first transistor being configured to control a driving current supplied to the light emitting element in response to a voltage of the first node, a first capacitor including one electrode connected to the first node and another electrode connected to a third node, a second transistor coupled between the third node and a data line, a third transistor coupled between the first node and the second node, a fourth transistor coupled between the first node and an initialization power source, a fifth transistor coupled between a reference power source and the third node, and an eighth transistor coupled between a fourth node and an anode initialization power source.
1 . A pixel of a display device, the pixel comprising:
a light emitting element;
a first transistor coupled between a first power source line and a second node and having a gate electrode connected to a first node;
a first capacitor including one electrode connected to the first node and another electrode connected to a third node;
a second transistor coupled between the third node and a data line;
a third transistor coupled between the first node and the second node;
a fifth transistor coupled between a second power source line and the third node; and
an eighth transistor coupled between a fourth node and a third power source line.
2 . The pixel according to claim 1 , further comprising:
a fourth transistor coupled between the first node and a fourth power source line.
3 . The pixel according to claim 2 , further comprising:
a sixth transistor coupled between the first power source line and a fifth node connected to one electrode of the first transistor; and
a seventh transistor coupled between the second node and the fourth node.
4 . The pixel according to claim 3 , further comprising:
a ninth transistor coupled between the fifth node and a fifth power source line.
5 . The pixel according to claim 4 , further comprising:
a second capacitor including one electrode connected to the first power source line and another electrode connected to the third node.
6 . The pixel according to claim 5 , wherein:
the first power source line supplies a first voltage,
the second power source line supplies a second voltage,
the third power source line supplies a third voltage,
the fourth power source line supplies a fourth voltage, and
the fifth power source line supplies a fifth voltage which has a positive voltage.
7 . The pixel according to claim 5 , wherein the first power source line and one electrode of the sixth transistor are connected by a bridge pattern.
8 . The pixel according to claim 7 , wherein the pixel further comprises:
a (2_1)-th capacitor including one electrode connected to the bridge pattern and another electrode connected to the other electrode of the first capacitor.
9 . The pixel according to claim 8 , wherein the second power source line and one electrode of the fifth transistor are connected by a first contact hole.
10 . The pixel according to claim 9 , wherein the third power source line and one electrode of the eight transistor are connected by a second contact hole.
11 . The pixel according to claim 10 , wherein the fourth power source line and one electrode of the fourth transistor are connected by a third contact hole.
12 . The pixel according to claim 11 , wherein the fifth power source line and one electrode of the ninth transistor are connected by a fourth contact hole.
13 . The pixel according to claim 1 , wherein
the second transistor includes a (2_1)-th transistor and a (2_2)-th transistor connected in series, and includes a first shielding pattern overlapping a node between the (2_1)-th transistor and the (2_2)-th transistor, and
the first shielding pattern is connected to the third power source line.
14 . The pixel according to claim 1 , wherein
the third transistor includes a (3_1)-th transistor and a (3_2)-th transistor connected in series, and includes a second shielding pattern overlapping a node between the (3_1)-th transistor and the (3_2)-th transistor, and
the second shielding pattern is connected to the first power source line.
15 . The pixel according to claim 2 , wherein
the fourth transistor includes a (4_1)-th transistor and a (4_2)-th transistor connected in series, and includes a third shielding pattern overlapping a node between the (4_1)-th transistor and the (4_2)-th transistor, and
the third shielding pattern is connected to the first power source line.
16 . The pixel according to claim 1 , wherein
the fifth transistor includes a (5_1)-th transistor and a (5_2)-th transistor connected in series, and includes a third shielding pattern overlapping a node between the (5_1)-th transistor and the (5_2)-th transistor, and
the third shielding pattern is connected to the third power source line.
17 . An electronic device, comprising:
a processor to provide input image data; and
a display device to display an image based on the input image data, the display device comprising a pixel,
wherein the pixel comprises:
a light emitting element;
a first transistor coupled between a first power source line and a second node and having a gate electrode connected to a first node;
a first capacitor including one electrode connected to the first node and another electrode connected to a third node;
a second transistor coupled between the third node and a data line;
a third transistor coupled between the first node and the second node;
a fifth transistor coupled between a second power source line and the third node; and
an eighth transistor coupled between a fourth node and a third power source line.
18 . The electronic device according to claim 17 , wherein the pixel further comprises:
a fourth transistor coupled between the first node and a fourth power source line.
19 . The electronic device according to claim 18 , wherein the pixel further comprises:
a sixth transistor coupled between the first power source line and a fifth node connected to one electrode of the first transistor; and
a seventh transistor coupled between the second node and the fourth node.
20 . The electronic device according to claim 19 , wherein the pixel further comprises:
a ninth transistor coupled between the fifth node and a fifth power source line.