Display device
A display device includes a pixel electrode disposed on a first surface of a substrate, a light emitting layer disposed on the pixel electrode, a common electrode disposed on the light emitting layer, a supply voltage line disposed on the first surface of the substrate and applying a voltage to the common electrode, a first auxiliary conductive layer disposed on a second surface of the substrate, and a first connection conductive layer at least partially disposed on a side surface of the substrate and electrically connecting the first auxiliary conductive layer to the supply voltage line.
1 . A display device, comprising:
a light emitting diode that includes a pixel electrode on a first surface of a substrate, a light emitting layer on the pixel electrode, and a common electrode on the light emitting layer, the common electrode directly connected to a data conductive layer through a contact hole penetrating the light emitting layer and an insulating layer between the substrate and the pixel electrode;
a supply voltage line on the first surface of the substrate, the supply voltage line configured to apply a voltage to the common electrode;
a first auxiliary conductive layer on a second surface of the substrate; and
at least one first connection conductive layer at least partially disposed on a side surface of the substrate and electrically connecting the first auxiliary conductive layer to the supply voltage line, the first auxiliary conductive layer being electrically connected to the common electrode,
wherein the side surface of the substrate is between the first surface of the substrate and the second surface of the substrate opposite the first surface of the substrate.
2 . The display device of claim 1 , further comprising: first circuit boards attached to an end of the substrate; and at least one second circuit board attached to the first circuit boards.
3 . The display device of claim 2 , wherein
the at least one first connection conductive layer includes a plurality of first connection conductive layers, and
the first circuit boards and the plurality of first connection conductive layers are arranged in an alternating manner along one edge of the substrate.
4 . The display device of claim 3 , wherein the plurality of first connection conductive layers contact the side surface of the substrate.
5 . The display device of claim 4 , wherein the plurality of first connection conductive layers comprise a metal paste or a conductive tape.
6 . The display device of claim 3 , wherein the plurality of first connection conductive layers electrically contact the supply voltage line.
7 . A display device, comprising:
a pixel electrode on a first surface of a substrate;
a light emitting layer on the pixel electrode;
a common electrode on the light emitting layer;
a supply voltage line on the first surface of the substrate, the supply voltage line configured to apply a voltage to the common electrode;
a first auxiliary conductive layer on a second surface of the substrate;
a first connection conductive layer at least partially disposed on a side surface of the substrate and electrically connecting the first auxiliary conductive layer to the supply voltage line;
an insulating layer between the substrate and the pixel electrode; and a data conductive layer electrically connected to the common electrode,
wherein the common electrode is directly connected to the data conductive layer through a contact hole penetrating the light emitting layer and the insulating layer.
8 . The display device of claim 1 , wherein the substrate is a flexible substrate.
9 . The display device of claim 8 ,
wherein the substrate comprises:
a main region;
a bending region extended from the main region; and
a subsidiary region extended from the bending region and parallel to the main region, and
the first auxiliary conductive layer is on the second surface of the substrate in the main region.
10 . The display device of claim 1 , wherein the first auxiliary conductive layer is entirely on the second surface of the substrate.
11 . The display device of claim 1 , wherein
the substrate comprises a display area and a non-display area adjacent to the display area, and
the first auxiliary conductive layer is on the second surface of the substrate in the non-display area.
12 . A display device, comprising:
a first insulating layer on a first surface of a substrate;
a supply voltage line on the first insulating layer;
a pixel electrode on the first insulating layer;
a light emitting layer on the pixel electrode;
a common electrode on the light emitting layer, the common electrode configured to receive a voltage from the supply voltage line, and the common electrode directly connected to a data conductive layer through a first contact hole penetrating the light emitting layer and a second insulating layer; and
an auxiliary conductive layer on a second surface of the substrate,
wherein the supply voltage line is electrically connected to the auxiliary conductive layer through a second contact hole penetrating the first insulating layer.
13 . The display device of claim 12 , wherein the auxiliary conductive layer is entirely on the second surface of the substrate.
14 . The display device of claim 12 , wherein
the substrate comprises a display area and a non-display area adjacent to the display area, and
the second contact hole is in the non-display area.
15 . The display device of claim 12 , wherein
the substrate comprises a display area and a non-display area adjacent to the display area, and
the auxiliary conductive layer is on the second surface of the substrate in the non-display area.
16 . The display device of claim 12 , wherein the substrate is a flexible substrate.
17 . The display device of claim 16 ,
wherein the substrate comprises:
a main region;
a bending region extended from the main region; and
a subsidiary region extended from the bending region and parallel to the main region, and
the auxiliary conductive layer is on the second surface of the substrate in the main region.
18 . The display device of claim 12 , further comprising:
a first connection conductive layer at least partially on a side surface of the substrate and electrically connecting the auxiliary conductive layer to the supply voltage line.
19 . The display device of claim 18 , further comprising:
first circuit boards attached to an end of the substrate;
at least one second circuit boards attached to the first circuit boards; and
a second connection conductive layer between the at least one second circuit boards and the auxiliary conductive layer.
20 . The display device of claim 19 , wherein
the first circuit boards are arranged in a direction along the substrate, and the first connection conductive layer is between the first circuit boards.
21 . The display device of claim 1 , wherein
the display device is a top-emission display device,
the first auxiliary conductive layer is opaque and includes at least one of Al, Cu, Ti, or Mo.
22 . The display device of claim 1 , wherein the common electrode is a cathode of the light emitting diode.
23 . The display device of claim 1 ,
wherein the at least one first connection conductive layer directly contacts the side surface of the substrate.