Display device comprising flexible substrate with plurality of pixels having improved heat dissipation characteristic
A display device comprises a display substrate including a display area on which a plurality of pixels are disposed and a pad area adjacent to an one side of the display area, a cover panel disposed under the display substrate, a first circuit board electrically connected to the pad area, a second circuit board electrically connected to the first circuit board and disposed under the cover panel, a control chip mounted on a first surface of the second circuit board, and an adhesive layer attaching the second circuit board to the cover panel and, when viewed in a plan view, defining an opening exposing a portion of the second circuit board at which the control chip is disposed.
1 . A display device comprising:
a display substrate including a display area on which a plurality of pixels are disposed and a pad area adjacent to one side of the display area;
a cover panel disposed under the display substrate;
a first circuit board electrically connected to the pad area;
a second circuit board electrically connected to the first circuit board and disposed under the cover panel;
a control chip mounted on a first surface of the second circuit board; and
an adhesive layer attaching the second circuit board to the cover panel, and when viewed in a plan view, defining an opening exposing a portion of the second circuit board at which the control chip is disposed.
2 . The display device of claim 1 ,
wherein a second surface opposite to the first surface of the second circuit board contacts the adhesive layer.
3 . The display device of claim 1 , further comprising:
an anti-reflection layer disposed on the display substrate.
4 . The display device of claim 1 ,
wherein the first circuit board includes:
a first part overlapping a part of the pad area;
a second part having a curved shape extending around the cover panel and a first end connected to the first part; and
a third part disposed under the cover panel and connected to a second end opposite to the first end of the second part.
5 . The display device of claim 1 ,
wherein the adhesive layer includes a first adhesive portion and a second adhesive portion,
wherein, when viewed in the plan view, the opening is disposed between the first adhesive portion and the second adhesive portion, and
wherein, when viewed in the plan view, each of the first adhesive portion and the second adhesive portion is spaced apart from the control chip.
6 . The display device of claim 5 ,
wherein the adhesive layer defines a first passage area and a second passage area exposing a second surface opposite to the first surface of the second circuit board between the first adhesive portion and the second adhesive portion,
wherein the adhesive layer contacts the second surface of the second circuit board, and
wherein, when viewed in the plan view, the first passage area and the second passage area face each other with the control chip interposed therebetween.
7 . The display device of claim 1 ,
wherein the adhesive layer includes first, second, third, and fourth adhesive portions spaced apart from each other, and
wherein, when viewed in the plan view, each of the first, second, third, and fourth adhesive portions is spaced apart from the control chip.
8 . The display device of claim 7 ,
wherein the adhesive layer defines first, second, third, and fourth passage areas exposing a second surface opposite to the first surface of the second circuit board between the first adhesive portion and the second adhesive portion, between the second adhesive portion and the third adhesive portion, between the third adhesive portion and the fourth adhesive portion, and between the fourth adhesive portion and the first adhesive portion, respectively,
wherein the adhesive layer contacts the second surface of the second circuit board,
wherein, when viewed in the plan view, the first passage area and the third passage area face each other with the control chip interposed therebetween, and
wherein, when viewed in the plan view, the second passage area and the fourth passage area face each other with the control chip interposed therebetween.
9 . The display device of claim 1 ,
wherein the display substrate includes:
a first part on which the plurality of pixels are disposed;
a second part having a curved shape extending around the cover panel and a first end connected to the first part; and
a third part disposed under the cover panel and connected to a second end opposite to the first end of the second part.
10 . A display device comprising:
a display substrate including a display area on which a plurality of pixels are disposed and a pad area adjacent to one side of the display area;
a cover panel disposed under the display substrate;
a first circuit board electrically connected to the pad area;
a second circuit board electrically connected to the first circuit board and disposed under the cover panel;
a control chip mounted on a first surface of the second circuit board;
an adhesive layer attaching the second circuit board to the cover panel, and when viewed in a plan view, defining a first opening exposing a portion of the second circuit board at which the control chip is disposed; and
a cover tape covering each of the first circuit board, the second circuit board, and the control chip.
11 . The display device of claim 10 ,
wherein a second surface opposite to the first surface of the second circuit board contacts the adhesive layer.
12 . The display device of claim 10 ,
wherein the cover tape is electrically connected to the pad area, the first circuit board, and the second circuit board.
13 . The display device of claim 12 ,
wherein the cover tape includes metal.
14 . The display device of claim 10 ,
wherein the first circuit board includes:
a first part overlapping a part of the pad area;
a second part having a curved shape extending around the cover panel and a first end connected to the first part; and
a third part disposed under the cover panel and connected to a second end opposite to the first end of the second part.
15 . The display device of claim 10 ,
wherein the adhesive layer includes a first adhesive portion and a second adhesive portion,
wherein, when viewed in the plan view, the first opening is disposed between the first adhesive portion and the second adhesive portion, and
wherein, when viewed in the plan view, each of the first adhesive portion and the second adhesive portion is spaced apart from the control chip.
16 . The display device of claim 15 ,
wherein the adhesive layer defines a first passage area and a second passage area exposing a second surface opposite to the first surface of the second circuit board between the first adhesive portion and the second adhesive portion,
wherein the adhesive layer contacts the second surface of the second circuit board, and
wherein, when viewed in the plan view, the first passage area and the second passage area face each other with the control chip interposed therebetween.
17 . The display device of claim 10 ,
wherein the adhesive layer includes first, second, third, and fourth adhesive portions spaced apart from each other, and
wherein, when viewed in the plan view, each of the first, second, third, and fourth adhesive portions is spaced apart from the control chip.
18 . The display device of claim 17 ,
wherein the adhesive layer defines first, second, third, and fourth passage areas exposing a second surface opposite to the first surface of the second circuit board between the first adhesive portion and the second adhesive portion, between the second adhesive portion and the third adhesive portion, between the third adhesive portion and the fourth adhesive portion, and between the fourth adhesive portion and the first adhesive portion, respectively,
wherein the adhesive layer contacts the second surface of the second circuit board,
wherein, when viewed in the plan view, the first passage area and the third passage area face each other with the control chip interposed therebetween, and
wherein, when viewed in the plan view, the second passage area and the fourth passage area face each other with the control chip interposed therebetween.
19 . The display device of claim 10 ,
wherein the cover tape defines a second opening exposing a side surface of the second circuit board adjacent to the display area.
20 . The display device of claim 10 ,
wherein the display substrate includes:
a first part on which the plurality of pixels are disposed;
a second part having a curved shape extending around the cover panel and a first end connected to the first part; and
a third part disposed under the cover panel and connected to a second end opposite to the first end of the second part.
21 . A display device comprising:
a display substrate including a display area on which a plurality of pixels are disposed and a pad area adjacent to one side of the display area;
a cover panel disposed under the display substrate;
a first circuit board electrically connected to the pad area;
a second circuit board electrically connected to the first circuit board and disposed under the cover panel,
wherein the first circuit board includes:
a first part overlapping a part of the pad area,
a second part having a curved shape extending around the cover panel and a first end connected to the first part, and
a third part disposed under the cover panel and connected to a second end opposite to the first end of the second part;
a control chip mounted on a first surface of the second circuit board;
an adhesive layer attaching the second circuit board to the cover panel, and when viewed in a plan view, defining a first opening exposing a portion of the second circuit board at which the control chip is disposed; and
a cover tape covering the first circuit board, a portion of the second circuit board between the third part of the first circuit board and the control chip, and the control chip, wherein the cover tape and the cover panel are arranged such that a side surface of the adhesive layer and a side surface of the second circuit board are exposed to an exterior of the display device.