Boe Technology Group Co., Ltd.

Beijing Boe Technology Development Co., Ltd.

Yuqian Sun

Lei Chen

Rongrong Gao

Xueqin Chen

Dongxu Zhang

The present disclosure provides a light emitting device, a display substrate and a display equipment. The light emitting device includes a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer and an electron injection layer that are stacked in sequence; the light emitting layer includes a plurality of light emitting units, and the wavelengths of lights emitted by at least two of the plurality of light emitting units are different from each other; a hole mobility of the electron blocking layer is greater than or equal to a hole mobility of the hole injection layer or the hole transport layer; and a square resistance of the hole injection layer and a square resistance of the hole transport layer are both greater than or equal to 5×10Ω/sq.

Light emitting device, display substrate and display equipment

A light emitting device and a displaying device. The light emitting device includes a luminescent layer, wherein the luminescent layer includes a thermally activated delayed-fluorescence material; the thermally activated delayed-fluorescence material includes a donor group, a receptor group and a linking group; the donor group and the receptor group bond to the linking group; and a torsion angle between a plane where the donor group is located and a plane where the linking group is located is θ1, and a torsion angle between a plane where the receptor group is located and the plane where the linking group is located is θ2; wherein θ1 and θ2 enable an energy-level difference between a singlet-state energy level of the thermally activated delayed-fluorescence material and a triplet-state energy level of the thermally activated delayed-fluorescence material to be less than a constant quantity T, wherein 0 eV<T<0.3 eV.

Growing community of inventors

Beijing, China

Yuqian Sun