Abstract: The present invention provides an organic material composition and applications thereof. By the combination of the compounds comprised in the organic material composition, the organic material composition makes the element have a lower driving voltage, a higher current efficiency and a longer service life.

Abstract: The present invention provides an organic material composition and applications thereof. By the combination of the compounds comprised in the organic material composition, the organic material composition makes the element have a lower driving voltage, a higher current efficiency and a longer service life.

Abstract: The present invention provides an organic material composition and applications thereof. By the combination of the compounds comprised in the organic material composition, the organic material composition makes the element have a lower driving voltage, a higher current efficiency and a longer service life.

Abstract: The present invention provides an organic material composition and applications thereof. By the combination of the compounds comprised in the organic material composition, the organic material composition makes the element have a lower driving voltage, a higher current efficiency and a longer service life.

Abstract: The present invention provides a compound, an organic electroluminescence material, an organic electroluminescence element and an electronic device. When the compound is used as the material of the organic functional layers, it makes the element have a lower driving voltage, a higher current efficiency and a longer service life.

Abstract: The present invention provides a nitrogen-containing fused heterocyclic compound and applications thereof. When the nitrogen-containing fused heterocyclic compound of the present invention is used as a host material of an emitting layer of an organic light-emitting element, the organic light-emitting element has a lower driving voltage (4.3 V or lower), a higher current efficiency (16 Cd/A or higher) and a longer service life (230 h or higher).

Abstract: The present invention provides a nitrogen-containing fused heterocyclic compound and applications thereof. When the nitrogen-containing fused heterocyclic compound of the present invention is used as a host material of an emitting layer of an organic light-emitting element, the organic light-emitting element has a lower driving voltage (3.8 V to 4.1 V), a higher current efficiency (15 Cd/A to 23 Cd/A or higher) and a longer service life (273 h or higher).

Abstract: A centrifugal switching device of a single-phase induction motor includes a centrifuge and pressure switches. The centrifuge includes a centrifugal sleeve, a centrifugal base, shaft coupling blocks, and a spring. The spring is directly fitted on the centrifugal base. Under a centrifugal force generated by the rotation of the motor, shaft coupling blocks I and II slide axially against an axial force of the spring, thus forcing an axial end surface of the centrifugal sleeve to be separated from contacts of the pressure switches, such that a starting winding of a stator ferrite-core coil of the single-phase induction motor is disconnected and a heater is turned on. The shaft coupling blocks I and II adopt a design with round transition, central sliding contact, and smooth rotation, thereby achieving a simple structure, convenient mounting, and safety usage.

Abstract: A centrifugal switching device of a single-phase induction motor includes a centrifuge and pressure switches. The centrifuge includes a centrifugal sleeve, a centrifugal base, shaft coupling blocks, and a spring. The spring is directly fitted on the centrifugal base. Under a centrifugal force generated by the rotation of the motor, shaft coupling blocks I and II slide axially against an axial force of the spring, thus forcing an axial end surface of the centrifugal sleeve to be separated from contacts of the pressure switches, such that a starting winding of a stator ferrite-core coil of the single-phase induction motor is disconnected and a heater is turned on. The shaft coupling blocks I and II adopt a design with round transition, central sliding contact, and smooth rotation, thereby achieving a simple structure, convenient mounting, and safety usage.