37results about How to "Reduce coplanarity" patented technology

An electrical connector has an insulative body, a group of first conductive terminals and a group of second conductive terminals fixed to the insulative body, a grounding metal plate and an outer shielding shell. A front part of the shell forms a first mating cavity and a rear part of the shell forms a second mating cavity. An insertion space is formed between elastic extending arms of the first terminal group and elastic extending arms of the second terminal group. An electrical connector combination, which includes the electrical connector and a circuit board, is further provided. An inserted portion of the circuit board can be correspondingly inserted into the insertion space and can be elastically interposed by the elastic extending arms of the first terminal group and the elastic extending arms of the second terminal group so as to be correspondingly electrically connected.

The invention discloses an organic compound and an organic electroluminescence device, which relates to the technical field of organic electroluminescence, and its structural formula is as follows: wherein, X is O or S; R1‑R3, R5‑R14, R18, R19 , R20 are the same or different, each independently selected from hydrogen, deuterium, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C5-C20 heteroaryl; the compound of the present invention is applied to useful In the electroluminescent device, under the same current density, the luminous efficiency of the device has been greatly improved, the starting voltage has been reduced, the power consumption has been relatively reduced, and the life span has been increased accordingly.

The invention discloses a fluorenyl-[beta]-carboline compound, an application thereof as an organic light-emitting material and an aggregation-induced emission enhancement material, and a preparation method of the compound. In the invention, two functional structure units, [beta]-carboline and fluorene, are bonded to each other through an acylhydrazone bridge bond to obtain the novel fluorenyl-[beta]-carboline organic light-emitting molecule. The compound has dual-emission and aggregation-induced emission enhancement characters, has stable structure, is not liable to crystallize, is good in film-forming property and has strong practicability. The preparation method employs low-cost and easy-to-obtained raw materials, is less in synthetic steps, is simple in operations, is simple in purification and is easy to achieve industrial production.

The invention discloses an imidazole tri-acylhydrazone compound shown in formula I, an application of the compound as an organic light-emitting material as well as a preparation method of the compound. Four functional structure units, namely, an imidazole group, an acylhydrazone group, a diarylethene group and a naphthyl group, are effectively combined in one molecule, and a novel multi-functional-group imidazole tri-acylhydrazone organic light-emitting molecule is formed. The preparation method of the light-emitting material comprises steps as follows: (1) preparation of an intermediate, namely, imidazole trimethyl tricarboxylate; (2) preparation of an intermediate, namely, imidazole trimethyl hydrazide; (3) preparation of a target product, the imidazole tri-acylhydrazone. The preparation method is simple and comprises few synthesis steps, raw materials are easy to obtain, the cost is low, and purification and industrialization are easy. The imidazole tri-acylhydrazone compound is stable in structure and easy to store and shows stronger fluorescence emission under solution and solid states. The light-emitting material is good in stability and can be applied to fields of light-emitting devices, fluorescence sensing and the like.