Display apparatus
The present invention provides a display substrate for reducing resistance deviation occurring in a fan out unit, and a display apparatus including the display substrate. According to the present invention, resistance units are disposed in lines having a relatively short length in an area where lengths of adjacent lines increase or decrease non-linearly, and the adjacent lines have substantially equal resistance or have linear resistance variation.
1. A display apparatus comprising:
a substrate having a display area for displaying an image and a non-display area around a periphery of the display area;
a pad unit comprising:
a dummy pad unit that is not connected to a portion of the display area;
and a first signal pad unit and a second signal pad unit connected to the portion of the display area, and respectively arranged at sides of the dummy pad unit with the dummy pad unit interposed therebetween, wherein more of the pad unit is on one side of a virtual line that crosses a center of the display area;
a first fan out unit connecting the first signal pad unit and the display area, and comprising a plurality of first lines comprising resistance units, the first fan out unit being in the non-display area; and
a second fan out unit connecting the second signal pad unit and the display area, and comprising a plurality of second lines that are longer than the first lines, the second fan out unit being in the non-display area,
wherein the first lines and the second lines comprise upper lines and lower lines that do not overlap with each other, have an insulating layer interposed therebetween, and are alternately arranged.
2. The display apparatus of claim 1 , wherein a corresponding one of the resistance units are between both ends of each of the first lines, which are discontinuous, and
wherein the resistance units each comprise a resistance member and a connection member that electrically connects the resistance member and the both ends of a corresponding one of the first lines.
3. The display apparatus of claim 2 , wherein the resistance member comprises a doped semiconductor material.
4. The display apparatus of claim 2 , wherein the resistance member comprises the same material as that of the upper line and is in the same layer as the upper line.
5. The display apparatus of claim 4 , wherein the resistance member is in the resistance unit of the upper line from among the first lines.
6. The display apparatus of claim 2 , wherein the resistance member comprises the same material as that of the lower line and is in the same layer as the lower line.
7. The display apparatus of claim 6 , wherein the resistance member is in the resistance unit of the lower line from among the first lines.
8. The display apparatus of claim 2 , wherein the resistance member comprises a transparent conductive oxide.
9. The display apparatus of claim 2 , wherein the connection member comprises a low-resistance metal, and connects the resistance member to the first lines via contact holes.
10. The display apparatus of claim 1 , wherein the first fan out unit and the second fan out unit have substantially equal resistances or have resistances that vary linearly from each other.
11. A display apparatus comprising:
a substrate having:
a display area in which pixels for displaying an image are arranged at locations where a data line and a first gate line, which are on a first insulating layer, cross each other and where the data line and a second gate line, which is insulated from the first gate line by a second insulating layer, cross each other; and
a non-display area around a periphery of the display area;
a pad unit comprising:
a dummy pad unit that is not connected to a portion of the display area; and
a first signal pad unit and a second signal pad unit connected to the portion of the display area, and respectively arranged at sides of the dummy pad unit with the dummy pad unit interposed therebetween,
wherein more of the pad unit is on one side of a virtual line that crosses a center of the display area;
a first fan out unit connecting the first signal pad unit and the display area, and comprising a plurality of first lines comprising resistance units, the first fan out unit being in the non-display area; and
a second fan out unit connecting the second signal pad unit and the display area, and comprising a plurality of second lines that are longer than the first lines, the second fan out unit being in the non-display area,
wherein the first lines and the second lines comprise lower lines in the same layer as the first gate line and upper lines in the same layer as the second gate line, and
wherein the first lines and the second lines are non-overlapping, have the second insulating layer interposed therebetween, and are alternately disposed.
12. The display apparatus of claim 11 , wherein a corresponding one of the resistance units is between both ends of each of the first lines, which are discontinuous, and
wherein each of the resistance units comprises a resistance member and a connection member that electrically connects both ends of a corresponding one of the first lines.
13. The display apparatus of claim 12 , wherein the resistance member comprises a doped semiconductor material, and is below the first insulating layer.
14. The display apparatus of claim 12 , wherein the resistance member comprises the same material as that of the second gate line, and is in the same layer as the second gate line.
15. The display apparatus of claim 14 , wherein a corresponding one of the resistance members are in a corresponding one of the upper lines from among the first lines.
16. The display apparatus of claim 12 , wherein the resistance member comprises the same material as that of the first gate line and is in the same layer as the first gate line.
17. The display apparatus of claim 16 , wherein a corresponding one of the resistance members is in a corresponding one of the resistance units of each of the lower lines of each of the first lines.
18. The display apparatus of claim 12 , wherein the connection member comprises a low-resistance metal, and connects the first lines and the resistance member via contact holes.
19. The display apparatus of claim 18 , wherein the resistance member comprises a transparent conductive oxide, and is on a protection layer formed on the connection member.
20. The display apparatus of claim 11 , wherein the first fan out unit and the second fan out unit have substantially equal resistance or have a linear resistance variation as compared to each other.
21. The display apparatus of claim 11 , wherein a driver integrated circuit (IC) for outputting signals is in the pad unit, and the first lines and the second lines are configured to transmit signals from the driver integrated circuit (IC) to the display area.
22. The display apparatus of claim 21 , wherein the first lines and the second lines are configured to transmit the signals from the driver integrated circuit (IC) to the data line.