Yungu (Gu'an) Technology Co., Ltd.

Jingwen Tian

Mengzhen Li

Lin He

Tiantian Li

Weiwei Li

Xiaokang Zhou

Xiuqi Huang

Chao Chi Peng

Hui Pang

Xiaoyu Gao

Disclosed are an organic light emitting diode, a display panel and a display device. The organic light emitting diode includes a first electrode, a second electrode, a light emitting layer and an electron blocking layer, the first electrode and the second electrode are disposed opposite to each other, the light emitting layer is disposed between the first electrode and the second electrode, the electron blocking layer is disposed between the light emitting layer and the first electrode. A LUMO level of the electron blocking layer is higher than a LUMO level of a light emitting host material in the light emitting layer, a first level difference between the LUMO level of the electron blocking layer and the LUMO level of the light emitting host material in the light emitting layer is represented by A, where A&#x2265;0.4 eV.

Organic light emitting diode, display panel and display device

Provided are an OLED, display panel and display device. The OLED includes a first electrode, a second electrode, a light emitting layer and at least one blocking layer. The second electrode is arranged opposite to the first electrode. The light emitting layer is arranged between the first electrode and the second electrode. The blocking layer is arranged between the light emitting layer and the second electrode and/or between the light emitting layer and the first electrode. Each blocking layer of the at least one blocking layer comprises at least two blocking materials, electron mobility of at least one blocking material of the at least two blocking materials is lower than a first preset value, electron mobility of at least another blocking material of the at least two blocking materials is higher than a second preset value, and the first preset value is lower than the second preset value.

Provided is an organic light-emitting diode. The organic light-emitting diode includes a first electrode, a second electrode, a light-emitting layer and a hole blocking layer, where the first electrode and the second electrode are oppositely disposed; the light-emitting layer is disposed between the first electrode and the second electrode; the hole blocking layer is disposed between the light-emitting layer and the second electrode; and the hole blocking layer includes at least two hole blocking sub-layers which are stacked, where a lowest unoccupied molecular orbital (LUMO) energy level decreases sequentially in the at least two hole blocking sub-layers.

Organic light-emitting diode and display panel

An organic electroluminescent device and an organic electroluminescent apparatus are disclosed. The organic electroluminescent device includes a first electrode layer, a first carrier functional layer, a light-emitting layer and a second electrode layer stacked in sequence, wherein a P-doped layer is arranged between the first carrier functional layer and the light-emitting layer. Thus the energy level bending of an interface between the first carrier functional layer and the light-emitting layer is modified, and the hole injection potential barrier at the interface between the two is reduced, thereby effectively reducing the turn-on voltage of the organic electroluminescent device.

Organic electroluminescent device and an organic electroluminescent apparatus

The present application discloses an organic electroluminescent device that includes a plurality of kinds of light-emitting units having different light-emitting wavelengths, wherein the light-emitting units are organic light-emitting diodes, the organic light-emitting diodes include a plurality of single-colored organic light-emitting diodes and/or a plurality of white-light organic light-emitting diodes provided with optical filters; at least one kind of the organic light-emitting diodes has a microcavity structure; a microcavity optical length Li of the organic light-emitting diode having the microcavity structure and a light-emitting wavelength &#x3bb;i of the corresponding light-emitting unit meet the following formula: Li=ni&#x3bb;i, wherein ni&#x2265;2, ni is a positive integer, and the ni corresponding to at least one of the plurality of kinds of light-emitting units having different light-emitting wavelengths &#x3bb;i is larger than or equal to 3; m is the number of the kinds of the light-emitting units, m&#x2265;i&#x2265;1, i and m are positive integers.

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Langfang, China

Jingwen Tian