Back to results
US 12,713,768 B2Granted
Display device having electrode opening overlapping an auxilary conductive layer
AssigneeSamsung Display Co., Ltd.
InventorsHyun Kim, Seul-Ki Kim, Seung-Ha Choi, Kap Soo Yoon, Woogeun Lee, Yeeun Kang, Jung Kyoung Cho
Life of this patent
Estimating the term…
Abstract
A display device includes a base substrate, a circuit layer including a transistor including a gate electrode, an auxiliary conductive layer, a first insulating layer disposed on the transistor and the auxiliary conductive layer, and a second insulating layer disposed on the first insulating layer, and a display element layer including a pixel defining layer disposed on the circuit layer and a light-emitting element including a first electrode, a functional layer, and a second electrode, which are sequentially stacked.
Claims25
A display device including a display region and a peripheral region disposed on at least one side of the display region, the display region comprising a light-emitting area and a non-light-emitting area, the display device comprising:
- a base substrate;
- a circuit layer disposed on the base substrate, the circuit layer comprising:
- a transistor comprising a gate electrode,
- an auxiliary conductive layer, the auxiliary conductive layer and the gate electrode directly disposed on a same surface of a same layer,
- a first insulating layer disposed on the transistor and the auxiliary conductive layer, and
- a second insulating layer disposed on the first insulating layer;
- and
- a display element layer comprising:
- a pixel defining layer disposed on the circuit layer, and
- a light-emitting element comprising a first electrode, a functional layer, and a second electrode which are sequentially stacked, wherein
- an electrode opening overlapping in a plan view the non-light-emitting area is formed in the circuit layer and the pixel defining layer to expose at least a portion of the auxiliary conductive layer,
- the pixel defining layer includes a protruding edge portion that does not overlap in the plan view the first insulating layer and protrudes toward inside of the electrode opening,
- each of the functional layer and the second electrode is directly disconnected at an end portion of the protruding edge portion, and
- the second electrode is electrically connected to the auxiliary conductive layer through the electrode opening, wherein
- a first end portion of the second electrode disposed in the electrode opening is disposed on an upper surface of the auxiliary conductive layer, and
- a second end portion of the second electrode is in contact with an edge portion of the first electrode disposed on a lower surface of the protruding edge portion, wherein
- a first side surface of the first insulating layer and a first side surface of the second insulating layer are exposed through the electrode opening,
- a second side surface of the first insulating layer and a second side surface of the second insulating layer are covered by the first electrode and the pixel defining layer, which are sequentially stacked, and
- the electrode opening comprises:
- a lower opening including a space under the protruding edge portion of the pixel defining layer and disposed between the first side surface of the second insulating layer and the second side surface of the second insulating layer exposed through the space;
- and
- an upper opening formed in the pixel defining layer and disposed above the lower opening.
19 more elements
A display device including a display region and a peripheral region disposed on at least one side of the display region, the display region comprising a light-emitting area and a non-light-emitting area, the display device comprising:
- a base substrate;
- a circuit layer disposed on the base substrate, the circuit layer comprising:
- a transistor comprising a gate electrode,
- an auxiliary conductive layer, the auxiliary conductive layer and the gate electrode directly disposed on a same surface of a same layer,
- a first insulating layer disposed on the transistor and the auxiliary conductive layer, and
- a second insulating layer disposed on the first insulating layer;
- and
- a display element layer comprising:
- a pixel defining layer disposed on the circuit layer, and
- a light-emitting element comprising a first electrode, a functional layer, and a second electrode which are sequentially stacked, wherein
- an electrode opening overlapping in a plan view the non-light-emitting area is formed in the circuit layer and the pixel defining layer to expose at least a portion of the auxiliary conductive layer,
- the pixel defining layer includes a protruding edge portion that does not overlap in the plan view the first insulating layer and protrudes toward inside of the electrode opening,
- each of the functional layer and the second electrode is directly disconnected at an end portion of the protruding edge portion, and
- the second electrode is electrically connected to the auxiliary conductive layer through the electrode opening, wherein each of the gate electrode and the auxiliary conductive layer comprises:
- a first sub-layer comprising titanium (Ti),
- a second sub-layer comprising copper (Cu), and
- a third sub-layer comprising indium tin oxide (ITO), wherein
- a first end portion of the second electrode in the electrode opening is in contact with the second sub-layer of the auxiliary conductive layer, and
- a second end portion of the second electrode is in contact with the third sub-layer of the auxiliary conductive layer, wherein
- a second side surface of the first insulating layer is not covered by the pixel defining layer,
- a first side surface of the first insulating layer, a first side surface of the second insulating layer, and a second side surface of the second insulating layer are covered by the pixel defining layer, and
- the electrode opening comprises:
- a lower opening including a space under the protruding edge portion of the pixel defining layer and disposed between the second sub-layer of the auxiliary conductive layer exposed through the space and the second side surface of the first insulating layer;
- and
- an upper opening formed in the pixel defining layer and disposed above the lower opening.
22 more elements
A display device including a display region and a peripheral region disposed on at least one side of the display region, the display region comprising a light-emitting area and a non-light-emitting area, the display device comprising:
- a base substrate;
- a circuit layer disposed on the base substrate, the circuit layer comprising:
- a transistor comprising a gate electrode,
- an auxiliary conductive layer, the auxiliary conductive layer and the gate electrode directly disposed on a same surface of a same layer,
- a first insulating layer disposed on the transistor and the auxiliary conductive layer, and
- a second insulating layer disposed on the first insulating layer;
- and
- a display element layer comprising:
- a pixel defining layer disposed on the circuit layer, and
- a light-emitting element comprising a first electrode, a functional layer, and a second electrode which are sequentially stacked, wherein
- an electrode opening overlapping in a plan view the non-light-emitting area is formed in the circuit layer and the pixel defining layer to expose at least a portion of the auxiliary conductive layer,
- the pixel defining layer includes a protruding edge portion that does not overlap in the plan view the first insulating layer and protrudes toward inside of the electrode opening,
- each of the functional layer and the second electrode is directly disconnected at an end portion of the protruding edge portion, and
- the second electrode is electrically connected to the auxiliary conductive layer through the electrode opening, wherein
- a first end portion of the second electrode disposed in the electrode opening is disposed on an upper surface of the auxiliary conductive layer, wherein
- a first side surface of the first insulating layer is exposed through the electrode opening,
- a second side surface of the first insulating layer, a first side surface of the second insulating layer, and a second side surface of the second insulating layer are covered by the pixel defining layer, and
- the first side surface of the second insulating layer faces the electrode opening and
- the electrode opening comprises:
- a lower opening including a space under the protruding edge portion of the pixel defining layer and disposed between the first side surface of the first insulating layer and the second side surface of the first insulating layer exposed through the space;
- and
- an upper opening formed in the pixel defining layer and disposed above the lower opening.
19 more elements
A display device including a display region and a peripheral region disposed on at least one side of the display region, the display region comprising a light-emitting area and a non-light-emitting area, the display device comprising:
- a base substrate;
- a circuit layer disposed on the base substrate, the circuit layer comprising:
- a transistor comprising a gate electrode,
- an auxiliary conductive layer, the auxiliary conductive layer and the gate electrode directly disposed on a same surface of a same layer,
- a first insulating layer disposed on the transistor and the auxiliary conductive layer, and
- a second insulating layer disposed on the first insulating layer;
- and
- a display element layer comprising:
- a pixel defining layer disposed on the circuit layer, and
- a light-emitting element comprising a first electrode, a functional layer, and a second electrode which are sequentially stacked, wherein
- an electrode opening overlapping in a plan view the non-light-emitting area is formed in the circuit layer and the pixel defining layer to expose at least a portion of the auxiliary conductive layer,
- the pixel defining layer includes a protruding edge portion that does not overlap in the plan view the first insulating layer and protrudes toward inside of the electrode opening,
- each of the functional layer and the second electrode is directly disconnected at an end portion of the protruding edge portion, and
- the second electrode is electrically connected to the auxiliary conductive layer through the electrode opening, further comprising:
- an intermediate conductive layer overlapping in the plan view the non-light-emitting area and disposed between the first insulating layer and the second insulating layer,
- wherein an end portion of the intermediate conductive layer is disposed under the protruding edge portion and protrudes toward inside of the electrode opening, wherein
- a first end portion of the second electrode disposed in the electrode opening is disposed on an upper surface of the auxiliary conductive layer, and
- a second end portion of the second electrode is in contact with the intermediate conductive layer disposed on a lower surface of the protruding edge portion wherein
- a first side surface of the first insulating layer is exposed through the electrode opening,
- a second side surface of the first insulating layer, a first side surface of the second insulating layer, and a second side surface of the second insulating layer are covered by the pixel defining layer,
- the first side surface of the second insulating layer faces the electrode opening and
- the electrode opening comprises:
- a lower opening including a space under the protruding edge portion and disposed between the first side surface of the first insulating layer and the second side surface of the first insulating layer exposed through the space;
- and
- an upper opening formed in the pixel defining layer and disposed above the lower opening.
22 more elements
Dependencies are inferred from the claim text.