Boe Technology Group Co., Ltd.

Chengdu Boe Optoelectronics Technology Co., Ltd.

Beijing Boe Technology Development Co., Ltd.

Rongrong Gao

Lei Chen

Dongxu Zhang

Kun Ma

Yang Liu

Lixia Qiu

Yuqian Sun

Juncong Li

Junming Zhu

The present disclosure provides a blue organic electroluminescence device, a display panel, and a display apparatus. A blue organic electroluminescence device includes a light-emitting layer having a matrix material and a blue fluorescent doping material doped in the matrix material, where dipole moments of the matrix material and the blue fluorescent doping material are both 0 to 1 D, which can ensure higher energy transfer efficiency and charge balance, ensure that an emission spectrum is a narrow spectrum, and thus have better color purity and higher external quantum Efficiency (EQE) to obtain the blue organic electroluminescence devices with high color purity and high luminous efficiency.

Blue organic electroluminescence device, display panel and display apparatus

An organic light-emitting device includes: an anode, an emitting layer, and a cathode that are stacked; a first functional material layer located between the emitting layer and the anode; and a second functional material layer located between the emitting layer and the cathode. Under a same test condition, a hole mobility of a material of the first functional material layer is at least ten times an electron mobility of a material of the second functional material layer.

Organic light-emitting device, light-emitting substrate and light-emitting apparatus

The present disclosure provides an organic light emitting device, including a first electrode, a second electrode and an emitting layer disposed between the first electrode and the second electrode. A hole transporting layer is disposed between the first electrode and the emitting layer. An electron transporting layer is disposed between the second electrode and the emitting layer. The ratio of the hole mobility of the hole transporting layer to the electron mobility of the electron transporting layer is about 10 to 500.

Organic light emitting device and display device

The present application provides a dioxin derivative, a preparation method thereof, an electron transport layer, an OLED device and a display panel. The dioxin derivative has a formula of where X is O, S or NR; L represents a direct bond, or L is a substituted or unsubstituted C-Carylene, or L is a C-Cheteroaryl including a first heteroatom; A has a formula of Ar1 and Ar2 independently are substituted or unsubstituted aryl, phenyl, biphenyl, or heterocyclyl comprising a second heteroatom, B is O, S or Se, X1, X2 and X3 independently are C or N, and at least one of X1, X2 or X3 is N, R4 and R5 independently are C-Caromatic or heteroaromatic group ring.

Dioxin derivatives, preparation methods thereof, electron transport layers, OLED devices and display panels

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.

Light emitting device and displaying device

A display substrate and a display device are provided. The display substrate includes: a base substrate; and a light-emitting element arranged on the base substrate, and including a first electrode, an organic functional layer and a second electrode arranged sequentially in that order in a direction away from the base substrate. The light-emitting element includes a first surface proximate to the base substrate, a second surface distal to the base substrate, and a side surface arranged between the first surface and the second surface. The display substrate further includes a reflection layer covering at least a part of the side surface and configured to reflect light from the organic functional layer.

Growing community of inventors

Beijing, China

Rongrong Gao