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US 9,755,162 B2Granted
Organic light emitting device and display device
AssigneeBoe Technology Group Co., Ltd.
InventorZhiqiang Jiao
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Abstract
An organic light emitting device and a display device is provided. The organic light emitting device includes an anode, a cathode, and a light emitting layer disposed between the anode and the cathode; an electron transport layer disposed between the cathode and the light emitting layer, and the material of the electron transport layer is an organic metal chelate.
Claims12
An organic light emitting device, comprising an anode, a cathode, a light emitting layer disposed between the anode and the cathode;
- and
- an electron transport layer disposed between the cathode and the light emitting layer, an electron injecting layer disposed between the electron transport layer and the cathode, and the electron transport layer comprising a material of an organic metal chelate, the electron injecting layer comprising LiF, Liq, CsF or Cs2CO3;
- wherein the organic metal chelate has a lowest unoccupied molecular orbital (LUMO) energy level of −3.9 eV˜−3.3 eV and a highest occupied molecular orbital (HOMO) energy level less than −6.0 eV, and the light emitting layer is in direct contact with the electron transport layer,
- wherein the organic metal chelate comprises ZnPc.
1 more element
A display device, comprising
- an organic light emitting device comprising an anode, a cathode, a light emitting layer disposed between the anode and the cathode;
- and
- an electron transport layer disposed between the cathode and the light emitting layer, an electron injecting layer disposed between the electron transport layer and the cathode, and the electron transport layer comprising a material of an organic metal chelate, the electron injecting layer comprising LiF, Liq, CsF or Cs2CO3;
- wherein the organic metal chelate has a lowest unoccupied molecular orbital (LUMO) energy level of −3.9 eV˜−3.3 eV and a highest occupied molecular orbital (HOMO) energy level less than −6.0 eV, and the light emitting layer is in direct contact with the electron transport layer;
- wherein the organic metal chelate comprises ZnPc.
2 more elements
Dependencies are inferred from the claim text.