TCL Technology Group Corporation

Disclosed are a composite electron transport material and a preparation method therefor, and a light-emitting diode. The composite electron transport material includes a core and at least one shell coating the core. The core is made of an inorganic electron transport material; the shell is made of a material including a metal oxide; and a band gap of the metal oxide is wider than that of the inorganic electron transport material. In the composite electron transport material, by covering modification of the core by the shell, the band gap, the conduction band energy level, and the electrical conductivity of the inorganic electron transport material are improved.

Disclosed herein are a light-emitting device including a first electrode, a first functional layer, a patterned insulating layer, a patterned second electrode, a patterned second functional layer, and a light-emitting layer, and a methods of manufacturing the same. In the present disclosure, an orthographic projection of the patterned second electrode on the first functional layer is located within an orthographic projection of the patterned insulating layer on the first functional layer, so as to avoid the contact of the patterned second functional layer with the first functional layer, and avoid a current leakage of the light-emitting device.

A method for preparing a quantum dot film, including: in the presence of an inert gas atmosphere, providing a mixed solution system comprising first quantum dots and a fatty acid solution of first ligands, and performing ligand exchange reaction under a first heating condition, to prepare second quantum dots having the first ligands having a structure of Formula 1 attached to surfaces thereof; and depositing the second quantum dots on a substrate to prepare a quantum dot prefabricated film, depositing a mixed solution containing an initiator and a cross-linker on the quantum dot prefabricated film, and heating to crosslink the first ligands on the surfaces of the second quantum dots; or alternatively, adding an initiator and a cross-linker to the second quantum dots, and depositing a resulting mixed system onto a substrate, heating to crosslink the first ligands on the surfaces of the second quantum dots.

The present disclosure discloses a light-emitting device, a preparation method therefor, and a display apparatus. A first and a second passivation protection functional layer are disposed between a first electrode and a light-emitting layer and between a second electrode and the light-emitting layer, and laser damage thresholds of the first and the second passivation protection functional layer are both greater than a laser damage threshold of the light-emitting layer.

A system and method for video temporal action proposal generation are provided. It processes video features extracted from the input video through an encoder to obtain video encoding features with global information, extracts corresponding interest segment features from the video encoding features using pre-trained proposal segments, and provides them to the decoder. The decoder generates segment features based on the interest segment features corresponding to each proposal segment and the pre-trained proposal features. These are then provided to the prediction module, generating temporal action proposal results based on the decoder's segment features. The solution in embodiments of the present invention can effectively capture global context information of the video, obtaining video encoding features with stronger representational capabilities. By introducing the several learnable proposal segments to extract the corresponding position-based feature sequences from the video encoding features, the training convergence speed is enhanced, and computational burden is reduced.

The present application discloses a preparation method of a core-shell quantum dot and a core-shell quantum dot. The preparation method of the core-shell quantum dot includes the following steps: providing a silicon quantum rod; growing a cadmium-free semiconductor shell layer on a surface of the silicon quantum rod to obtain a core-shell quantum dot. The present application grows the cadmium-free semiconductor shell layer on the surface of silicon quantum rod, and the core-shell quantum dot obtained in this way includes a silicon quantum rod and a cadmium-free semiconductor shell layer coated on the surface of silicon quantum rod.

The present application provides a preparation method of a charge transport layer, which includes steps of: forming a first film layer by a first solution containing a functional material, forming a second film layer by a second solution containing a charge transport material, the first film layer and the second film layer are in contact with each other, or forming a mixed film layer by a mixed solution of the first solution and the second solution; and removing the functional material to obtain a charge transport layer. The functional material is an organic substance containing an electron-donating group, a surface of the charge transport material has a metal cation dangling bond, and the electron-donating group is capable of being bonded with the metal cation dangling bond.

A composite material, a preparation method thereof, and a quantum dot light-emitting diode. The composite material includes n-type metal oxide nanoparticles and an organic molecule shown in Formula I connected to the n-type metal oxide nanoparticles, and the organic molecule is bound on the surface of the n-type metal oxide nanoparticles through carboxyl groups. In Formula I, R is a hydrocarbyl group or a hydrocarbyl derivative containing at least one conjugation effect unit. The composite material has good film-forming quality and crystalline properties, and enhances the electron mobility of the composite material through conjugation efficiency, thereby having good electron transportation capability.

The present disclosure discloses a photoelectric device and a preparation method therefor. The photoelectric device includes a cathode; an anode; and a functional layer, located between the cathode the anode; wherein the functional layer includes an electronic functional layer, and a material of the electronic functional layer includes an electronic functional material crosslinked by a crosslinking agent, and the crosslinking agent includes an azide compound which has at least two azide groups as terminal groups. The electronic functional layer of the photoelectric device provided by the present disclosure has good stability.

The present disclosure discloses a composite material, a photoelectric device and a preparation method therefor. The composite material includes a metal oxide and a glycerol-based metal compound. The coordination of the metal oxide and the glycerol-based metal compound could improve the thermal stability and storage stability of the composite material.