Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

Wuhan China Star Optoelectronics Technology Co., Ltd.

Kailong Wu

Qu Zhang

Jiajia Luo

Xianjie Li

Munjae Lee

Xu Wang

The present disclosure relates to a display panel and a display device. The display panel includes a substrate, a light-emitting layer, an encapsulation layer, and a light-filtering layer. The light-filtering layer is used to filter and adjust light emitted by the light-emitting layer to improve luminous purity of a red light-emitting unit and a green light-emitting unit, thereby adjusting the light emitted by the light-emitting layer of the display panel to R (0.708, 0.292), G (0.170, 0.797), and B (0.131, 0.046), thereby effectively achieving high BT2020 color gamut coverage and improving the color display capability of the display panel.

Display panel and display device with high BT2020 color gamut coverage

A thermally activated delayed fluorescent material, preparing method thereof, and an organic electroluminescent device are disclosed. The organic electroluminescent device includes an anode layer, a cathode layer, and a light-emitting layer disposed between the anode layer and the cathode layer. The light-emitting layer includes a thermally activated delayed fluorescent material. A structural formula of the thermally activated delayed fluorescent material is shown in the following structural formula I: and R-Rare electron donor units.

Thermally activated delayed fluorescent material, preparing method thereof, and organic electroluminescent device

The present invention provides a hole transport material, a preparation method thereof, and an electroluminescent device. Through ingenious molecular design, a xanthracene structure is combined with different electron-donating groups to synthesize a series of hole transport materials with a suitable highest occupied molecular orbital (HOMO) energy level and a suitable lowest unoccupied molecular orbital (LUMO) energy level, and a series of high-performance display devices can be manufactured using the hole transport materials provided by the present invention.

Hole transport material, preparation method thereof, and electroluminescent device

The present application provides an electroluminescent material, a method for manufacturing an electroluminescent material, and a light emitting device, by employing the strong electron-withdrawing group such as cyano, pyridine, pyrimidine, or s-triazine to enhance the electron-withdrawing property of the fluorenone receptor unit, a captodative electron effect between the electron donor unit and the electron acceptor unit in the molecule is enhanced, so that the intermolecular charge transfer property is enhanced while the red light shifts, thereby further reducing the energy level difference between the single-line energy level and the triplet energy level of the target molecule, to realize a long life span, red light emitted electroluminescent material, a method for manufacturing the electroluminescent material and a light emitting device.

Growing community of inventors

Wuhan, China

Kailong Wu