Organic electroluminescent device and display device

The present invention provides an organic electroluminescent device and a display device. The organic electroluminescent device comprises an anode layer, a cathode layer and an organic function layer provided between the anode layer and the cathode layer, an injection barrier from the anode layer to the organic function layer and an injection barrier from the cathode layer to the organic function layer are both not larger than 1 ev. A light emitting layer comprises a hole carrier transport region at a side of the anode layer, an electron carrier transport region at a side of the cathode layer and a light emitting region provided between the hole carrier transport region and the electron carrier transport region, there is no barrier for the hole carriers from the hole carrier transport region to the light emitting region and for the electron carriers from the electron carrier transport region to the light emitting region.