Organic light emitting display device for enhancing efficiency
AssigneeLG Display Co., Ltd.
InventorsYoungKwan Jung, Heedong Choi, Seunghyun Kim
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Abstract
Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. The first emission part includes a first hole transport layer and a first emission layer, and the second emission part includes a second hole transport layer and a second emission layer. A thickness of the second hole transport layer is greater than a thickness of the first hole transport layer.
Claims24
An organic light emitting display device comprising:
- a first emission part between a first electrode and a second electrode, the first emission part including a first hole transport layer and a first emission layer;
- and
- a second emission part on the first emission part, the second emission part including a second hole transport layer and a second emission layer,
- wherein a thickness of the second hole transport layer is greater than a thickness of the first hole transport layer.
An organic light emitting display device comprising:
- a first emission part between a first electrode and a second electrode, the first emission part including a first hole transport layer, an electron blocking layer, and a first emission layer;
- and
- a second emission part on the first emission part, the second emission part including a second hole transport layer and a second emission layer,
- wherein a thickness of the first hole transport layer is less than a thickness of the electron blocking layer.
Dependencies are inferred from the claim text.