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US 10,854,693 B2Granted
Organic light emitting display device
AssigneeLG Display Co., Ltd.
InventorsSungbin Shim, Eui-Doo Do, Suhyeon Kim
Life of this patent
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Abstract
An organic light emitting display device can include a substrate; a first electrode and an auxiliary electrode disposed on the substrate; a bank pattern disposed on a part of an upper surface of the first electrode and the auxiliary electrode, in which the bank pattern is divided into a first area and a second area disposed under the first area; a barrier rib disposed on a part of the upper surface of the auxiliary electrode, in which the barrier rib is divided into a third area having a reverse-tapered shape and a fourth area disposed under the third area and having a tapered shape; an organic emission layer disposed on the substrate; and a second electrode disposed on the organic emission layer.
Claims23
An organic light emitting display device comprising:
- a first electrode and an auxiliary electrode disposed on a substrate;
- a bank pattern disposed on a part of the first electrode and on a part of the auxiliary electrode, wherein the bank pattern is divided into a first area having a reverse-tapered shape relative to the substrate, the reverse-tapered shape of the first area becoming narrower in a direction towards the substrate, and a second area below the first area having a tapered shape relative to the substrate, the tapered shape of the second area becoming wider in the direction towards the substrate, the second area being disposed between the first area and the substrate;
- a barrier rib disposed on the auxiliary electrode, wherein the barrier rib is divided into a third area having a reverse-tapered shape relative to the substrate, the reverse-tapered shape of the third area becoming narrower in the direction towards the substrate, and a fourth area below the third area and having a tapered shape relative to the substrate, the tapered shape of the fourth area becoming wider in the direction towards the substrate, the fourth area being disposed between the third area and the substrate;
- an organic emission layer disposed on the substrate except on an area of the auxiliary electrode adjacent to the barrier rib;
- and
- a second electrode disposed on the organic emission layer and in contact with the auxiliary electrode,
- wherein a first side surface of the bank pattern includes two different slopes, a second side surface of the bank pattern includes two different slopes, a first side surface of the barrier rib includes two different slopes, and a second side surface of the barrier rib includes two different slopes,
- wherein the second side surface of the bank pattern is opposite to the first side surface of the bank pattern,
- wherein the second side surface of the barrier rib is opposite to the first side surface of the barrier rib,
- wherein a height of the second area of the bank pattern is the same as a height of the fourth area of the barrier rib, and a height of an uppermost surface of the first area of the bank pattern is lower than a height of an uppermost surface of the third area of the barrier rib,
- wherein each of the first and second areas of the bank pattern extend from the first side surface of the bank pattern to the second side surface of the bank pattern, and
- wherein a portion of the first area of the bank pattern protrudes through the organic emission layer at each of the first side surface and the second side surface of the bank pattern.
9 more elements
An organic light emitting display device having a plurality of sub-pixels in a pixel, the organic light emitting display device comprising:
- a first electrode and an auxiliary electrode on a substrate;
- a bank pattern on the first electrode and the auxiliary electrode, and having a first area with a reverse-tapered shape relative to the substrate, the reverse-tapered shape of the first area becoming narrower in a direction towards the substrate, and a second area below the first area with a tapered shape relative to the substrate, the tapered shape of the second area becoming wider in the direction towards the substrate, the second area being disposed between the first area and the substrate;
- a barrier rib on the auxiliary electrode, and having a third area with a reverse-tapered shape relative to the substrate, the reverse-tapered shape of the third area becoming narrower in the direction towards the substrate, and a fourth area below the third area with a tapered shape relative to the substrate, the tapered shape of the fourth area becoming wider in the direction towards the substrate, the fourth area being disposed between the third area and the substrate;
- an organic emission layer on the substrate except on an area of the auxiliary electrode adjacent to the barrier rib;
- and
- a second electrode on the organic emission layer and in contact with the auxiliary electrode,
- wherein a first side surface of the bank pattern includes two different slopes, a second side surface of the bank pattern includes two different slopes, a first side surface of the barrier rib includes two different slopes, and a second side surface of the barrier rib includes two different slopes,
- wherein the second side surface of the bank pattern is opposite to the first side surface of the bank pattern,
- wherein the second side surface of the barrier rib is opposite to the first side surface of the barrier rib,
- wherein a height of the second area of the bank pattern is the same as a height the fourth area of the barrier rib, and a height of an uppermost surface of the first area of the bank pattern is lower than a height of an uppermost surface of the third area of the barrier rib,
- wherein each of the first and second areas of the bank pattern extend from the first side surface of the bank pattern to the second side surface of the bank pattern, and
- wherein a portion of the first area of the bank pattern protrudes through the organic emission layer at each of the first side surface and the second side surface of the bank pattern, thereby suppressing a generation of leakage current, and the second electrode is in contact with the auxiliary electrode around the fourth area of the barrier rib, thereby reducing a resistance of the second electrode.
9 more elements
Dependencies are inferred from the claim text.