Mother substrate for organic light-emitting display apparatus
A mother substrate for an organic light-emitting display apparatus. The mother substrate has a panel area and a peripheral area surrounding the panel area, pixels disposed in a display area of the panel area, pads that are disposed in a non-display area of the panel area and are coupled to the pixels, test wirings disposed in the peripheral area, a local buffer electrically connected to the test wirings, a bridge wiring connecting the local buffer to one of the pads, and a dummy resistance layer having one end in contact with the bridge wiring and another end in contact with one of the test wirings.
1. A mother substrate for an organic light-emitting display apparatus, the mother substrate comprising:
a panel area comprising a display area and a non-display area;
a peripheral area surrounding the panel area;
pixels disposed in the display area;
pads disposed in the non-display area and coupled to the pixels;
test wirings disposed in the peripheral area;
a local buffer electrically connected to the test wirings;
a bridge wiring connecting the local buffer to one of the pads; and
a dummy resistance layer having a first end that contacts the bridge wiring and a second end that contacts one of the test wirings.
2. The mother substrate of claim 1 , wherein the dummy resistance layer comprises a semiconductor material.
3. The mother substrate of claim 1 , further comprising thin film transistors disposed in the pixels, wherein the dummy resistance layer is disposed in a same layer as a semiconductor layers of the thin film transistors.
4. The mother substrate of claim 1 , wherein the dummy resistance layer has a non-linear shape.
5. The mother substrate of claim 1 , wherein the one of the test wirings is in contact with the dummy resistance layer and is configured to transmit direct current power.
6. The mother substrate of claim 1 , wherein the pads comprise an aluminum layer.
7. The mother substrate of claim 1 , wherein the bridge wiring comprises an aluminum layer.
8. The mother substrate of claim 1 , wherein the one of the pads that is connected to the bridge wiring and at least one part of the bridge wiring are integrally formed in one piece.
9. The mother substrate of claim 8 , wherein:
the at least one part of the bridge wiring comprises a discontinuous portion; and
the discontinuous portion is electrically connected to the at least one part of the bridge wiring that is integrally formed in one piece with the one of the pads through a connection part that is formed in a different layer from each other.
10. The mother substrate of claim 9 , wherein the at least one part of the bridge wiring that is integrally formed in one piece with the one of the pads is disposed in a same layer as a layer of source/drain electrodes of a thin film transistor that is included in the pixels, and the connection part is disposed in a same layer as gate electrodes of the thin film transistor.
11. The mother substrate of claim 10 , wherein the discontinuous portion overlaps a cutting line separating the panel area from the peripheral area.
12. A mother substrate for an organic light-emitting display apparatus, the mother substrate comprising:
a panel area comprising a display area and a non-display area;
a peripheral area surrounding the panel area;
pixels disposed in the display area;
a first pad and a second pad disposed in a non-display area of the panel area and are coupled to the pixels;
test wirings disposed in the peripheral area;
a local buffer electrically connected to the test wirings;
a first bridge wiring connecting the local buffer to the first pad;
a dummy resistance layer having a first end that contacts with the bridge wiring and a second end that contacts one of the test wirings; and
a second bridge wiring that directly connects another one of the test wirings to the second pad.
13. The mother substrate of claim 12 , wherein the dummy resistance layer comprises a semiconductor material.
14. The mother substrate of claim 12 , further comprising thin film transistors disposed in the pixels, wherein the dummy resistance layer is disposed in a same layer as a semiconductor layers of the thin film transistors.
15. The mother substrate of claim 12 , wherein the dummy resistance layer has a non-linear shape.
16. The mother substrate of claim 12 , wherein the one of the test wirings is in contact with the dummy resistance layer and is configured to transmit direct current power.
17. The mother substrate of claim 12 , wherein the first pad and the second pad each comprise an aluminum layer.
18. The mother substrate for an organic light-emitting display apparatus of claim 1 , wherein the first bridge wiring comprises an aluminum layer.
19. The mother substrate for an organic light-emitting display apparatus of claim 1 , wherein the first pad and at least one part of the first bridge wiring are integrally formed in one piece.
20. A substrate for an organic light-emitting display apparatus, the substrate comprising:
a panel area;
a peripheral area surrounding the panel area;
pixels disposed in a display area of the panel area;
pads disposed in a non-display area of the panel area and coupled to the pixels;
test wirings disposed in the peripheral area;
a buffer electrically connected to the test wirings;
a wiring connecting the local buffer to one of the pads; and
a dummy resistance layer having one end in contact with the bridge wiring and another end in contact with one of the test wirings,
wherein the dummy resistance layer comprises a semiconductor material and has a non-linear shape.