Display device and method of driving the same
A display device includes a transistor disposed on a substrate and including a first active pattern, a second active pattern electrically connected to the transistor, a first line disposed on the second active pattern, and a second line disposed under the second active pattern and partially overlapping the first line.
1 . A display device comprising:
a first active pattern disposed on a substrate;
a lower gate line disposed on the first active pattern and overlapping the first active pattern;
a second active pattern electrically connected to the lower gate line;
a first line disposed on the second active pattern; and
a second line disposed under the second active pattern and partially overlapping the first line.
2 . The display device of claim 1 , wherein
a first signal having a high voltage level is applied to the first line, and
a second signal having a low voltage level is applied to the second line.
3 . The display device of claim 2 , wherein a signal applied to the second line falls from a high voltage level to a low voltage level during a period in which a signal applied to the first line has a high voltage level.
4 . The display device of claim 1 , wherein a portion of the second line overlaps both the first line and the second active pattern.
5 . The display device of claim 1 , further comprising:
a third line disposed on a same layer as the first line,
wherein the third line is electrically connected to the second line.
6 . The display device of claim 1 , further comprising:
a third line disposed on a same layer as the first line and to which an initialization voltage is applied,
wherein the third line is electrically connected to the second active pattern.
7 . The display device of claim 1 , wherein
the first active pattern includes a silicon-based semiconductor material, and
the second active pattern includes an oxide-based semiconductor material.
8 . The display device of claim 1 , further comprising:
a third line disposed on a same layer as the first line; and
a fourth line disposed on the same layer as the first line and to which an initialization voltage is applied, wherein
the third line is electrically connected to the second line, and
the fourth line is electrically connected to the second active pattern.
9 . The display device of claim 1 , further comprising:
a light emitting element electrically connected to the first active pattern.
10 . A display device comprising:
a first active pattern disposed on a substrate;
a lower gate line disposed on the first active pattern and overlapping the first active pattern;
a second active pattern electrically connected to the lower gate line and including an oxide-based semiconductor material;
a first line disposed on the second active pattern and to which a signal of a first level is applied; and
a second line disposed under the second active pattern, to which a signal of a second level different from the first level is applied, the second line partially overlapping both the first line and the second active pattern.
11 . The display device of claim 10 , wherein
the signal applied to the first line forms a negative field, and
the signal applied to the second line forms a positive field.
12 . The display device of claim 10 , further comprising:
a third line disposed on a same layer as the first line,
wherein the third line is electrically connected to the second line.
13 . The display device of claim 10 , further comprising:
a third line disposed on a same layer as the first line and to which an initialization voltage is applied,
wherein the third line is electrically connected to the second active pattern.
14 . The display device of claim 10 , wherein the first active pattern includes a silicon-based semiconductor material.
15 . The display device of claim 10 , further comprising:
a third line disposed on a same layer as the first line; and
a fourth line disposed on the same layer as the first line and to which an initialization voltage is applied, wherein
the third line is electrically connected to the second line, and
the fourth line is electrically connected to the second active pattern.
16 . The display device of claim 10 , further comprising:
a light emitting element electrically connected to the first active pattern.
17 . A method of driving a display device comprising a first active pattern disposed on a substrate, a lower gate line disposed on the first active pattern and overlapping the first active pattern, a second active pattern electrically connected to the lower gate line, a first line disposed on the second active pattern and to which a first signal of a high voltage level is applied, and a second line disposed under the second active pattern, to which a second signal of a low voltage level is applied, and partially overlapping the first line, the method comprising:
applying a signal to the first line; and
applying a signal to the second line, wherein
the signal applied to the second line falls from a high voltage level to a low voltage level during a period in which the signal applied to the first line has a high voltage level.
18 . The method of claim 17 , wherein
the first active pattern includes a silicon-based semiconductor material, and
the second active pattern includes an oxide-based semiconductor material.
19 . The method of claim 17 , wherein
the display device further includes:
a third line disposed on a same layer as the first line; and
a fourth line disposed on the same layer as the first line and to
which an initialization voltage is applied,
the third line is electrically connected to the second line, and
the fourth line is electrically connected to the second active pattern.