Organic light emitting display device
AssigneeLG Display Co., Ltd.
InventorsSeongsu JEON, Jeonghaeng HEO, Seung KIM
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Abstract
An organic light emitting display device is discussed. The organic light emitting display device in one embodiment includes at least one light emitting layer between an anode and a cathode, and an electron transport layer between the at least one light emitting layer and the cathode. The electron transport layer may include a first electron transport material for blocking holes from the light emitting layer to the electron transport layer, and a second electron transport material for assisting in a transfer of electrons to the light emitting layer, wherein the first electron transport material and the second electron transport material have different triplet exciton energy levels and different electron mobilities.
Claims26
An organic light emitting display device comprising:
- at least one light emitting layer between an anode and a cathode;
- and
- an electron transport layer between the at least one light emitting layer and the cathode, the electron transport layer including:
- a first electron transport material for blocking holes from the at least one light emitting layer to the electron transport layer;
- and
- a second electron transport material for assisting in a transfer of electrons to the at least one light emitting layer,
- wherein the first electron transport material and the second electron transport material have different triplet exciton energy levels and different electron mobilities.
An organic light emitting display device comprising:
- at least one light emitting part between an anode and a cathode;
- and
- an electron transport layer between the at least one light emitting part and the cathode,
- wherein the electron transport layer is composed of at least one layer having a first electron transport material and a second electron transport material.
Dependencies are inferred from the claim text.