367results about How to "Reduce the driving voltage" patented technology

The invention provides a piezoelectric self-feedback excitation type miniature electric field sensor, an electric field detection method and a sensor, and is applied to the technical field of electric field sensors. The piezoelectric self-feedback excitation type miniature electric field sensor comprises a substrate used for supporting a vibration pickup reference structure, a piezoelectric driving structure, a mutual shielding electric field sensing structure and an elastic beam; the piezoelectric driving structure is used for enabling the piezoelectric driving structure to deform under the condition that driving voltage is applied to the piezoelectric driving structure so as to enable the elastic beam to generate vibration; the mutual shielding electric field induction structure is used for responding to the vibration of the elastic beam, and the mutual shielding electric field induction structure outputs an induction current signal in a differential form so as to suppress common-mode noise and detect the amplitude intensity of a to-be-detected electric field; and the vibration pickup reference structure is used for responding to the vibration of the elastic beam and outputting a reference current signal so as to adjust the magnitude of the driving voltage and enable the output sensitivity of the piezoelectric self-feedback excitation type miniature electric field sensor to be a preset value.

The invention belongs to the field of organic electroluminescence, and discloses an electron transport layer material and a preparation method and application thereof. The structure of the material of the electron transport layer is as shown in a chemical formula I: # imgabs0 #. The compound of the material of the electron transport layer provided by the invention is composed of 9-alkyl-9-phenylfluorenyl, a triazine group and cyano-substituted aryl or heteroaryl, and the groups have high electron affinity to form an efficient electron transport channel; the organic light-emitting material also has good thermal stability, and as an electron transport layer material of an organic electroluminescent device, the organic light-emitting material has the characteristics of low driving voltage, high luminous efficiency and long service life.

An organic electroluminescent material is disclosed. The organic electroluminescent material is a compound with a structure shown in a formula 1, the compound can be used as a main body material, an electron transport material or a hole blocking material in an organic electroluminescent device, and the comprehensive performance of the device can be improved, such as low driving voltage, high device efficiency and remarkably prolonged device service life. The invention further discloses an organic electroluminescent device containing the compound with the structure shown in the formula 1 and a compound composition.

The present specification relates to a compound of Chemical Formula 1 and an organic light-emitting device comprising the same.

The invention belongs to the field of organic electroluminescence, and discloses an organic electroluminescence material as well as a preparation method and application thereof. The structure of the organic electroluminescent material is as shown in a chemical formula I: # imgabs0 #. According to the organic electroluminescent material compound provided by the invention, an aryl-substituted dibenzofuran group and a triarylamine group are bridged through a naphthylene group to form a mother nucleus main body, the rigid dibenzofuran structure can effectively enhance the structural stability, and the existence of the triarylamine group can improve the hole transport efficiency of the material; furthermore, the naphthylene group is bridged between the two main body structures, so that a more efficient conjugated system can be formed, the electron mobility of the whole material is improved, and the device has high luminous efficiency and long service life, and can maintain lower driving voltage at the same time.

The invention belongs to the field of organic electroluminescent materials, and discloses a blue light host material, a preparation method and an organic electroluminescent device. The structure of the blue light host material is as shown in a chemical formula I: # imgabs0 #. After the blue light host material provided by the invention is applied to the organic electroluminescent device, the driving voltage of the photoelectric device can be reduced, the luminous efficiency of the photoelectric device can be improved, and the service life of the photoelectric device can be prolonged.

The present invention relates to a novel compound having excellent carrier transport capability, light emission capability, and thermal stability, and an organic electroluminescent device having improved characteristics such as light emission efficiency, driving voltage, and lifespan by including the compound in one or more organic material layers, and to an organic electroluminescent device.

The invention relates to the technical field of dimming films, in particular to a dye PDLC composition and a PDLC dimming film. Based on the total weight of the dye PDLC composition as 100%, the dye PDLC composition comprises the following components in percentage by weight: 35-66% of a liquid crystal composition, 3-7% of an anthraquinone dichroic dye, 30-60% of a polymer precursor, 0.05-3% of a photoinitiator and 0.2-1% of a spacer, and the polymer precursor comprises an oligomer and a reactive diluent in a mass ratio of 1: (2-7). According to the dye PDLC composition provided by the invention, all the components have a synergistic effect, and a PDLC dimming film prepared from the dye PDLC composition has relatively high off-state haze, relatively low on-state haze and relatively low driving voltage, and also has excellent properties of light absorption, heat insulation, wide all-light dimming range, color adjustability and the like.

The invention provides an oxazolobenzocarbazole compound, an organic electroluminescent device and a display device, and relates to the technical field of organic electroluminescent materials. The oxazolobenzocarbazole compound disclosed by the invention has a proper energy level and good electron mobility, and can be used as an electron transport material to effectively reduce the potential barrier of electron transport and effectively block the diffusion of holes to one side of an electron transport layer, so that the luminous efficiency of a device can be further improved, the driving voltage can be reduced, and the service life can be prolonged.

The invention discloses an organic iridium metal complex luminescent material and a preparation method thereof, and an organic electroluminescent device, the organic iridium metal complex luminescent material can be used as a doping material of a luminescent part of the organic electroluminescent device, and because the organic iridium metal complex luminescent material has more benzene ring structures and is relatively symmetrical, the luminescent part of the organic electroluminescent device can be used as a doping material of the luminescent part of the organic electroluminescent device. Therefore, the wavelength of the fluorescence can be adjusted by changing the types and the number of the substituent groups on the benzene ring, so that the purposes of high luminous efficiency and prolonging of the service life of a device are achieved.

The invention relates to the technical field of organic electroluminescent devices, and discloses a fluorine-containing pyrimidine derivative organic compound and application thereof, a perovskite solar cell and an organic electroluminescent device. The organic compound has a structure as shown in a formula (I). The fluorine-containing pyrimidine derivative organic compound provided by the invention can improve the performance of a device, reduce the driving voltage, improve the current efficiency and prolong the service life of the device. # imgabs0 #

The invention relates to the technical field of organic electroluminescent devices, and discloses a cyanopyrimidine derivative organic compound and application thereof, a perovskite solar cell and an organic electroluminescent device. The organic compound has a structure as shown in a formula (I). The cyanopyrimidine derivative organic compound provided by the invention can improve the performance of a device, reduce the driving voltage, improve the current efficiency and prolong the service life of the device. # imgabs0 #

The present invention relates to the field of display technology, and in particular to an oxazole organic compound containing benzonaphthofuran and its application. The present invention provides an oxazole organic compound containing benzonaphthofuran, which has the following structure: an organic electroluminescent device containing the oxazole organic compound containing benzonaphthofuran can have a lower driving voltage, higher luminous efficiency and longer life.

The present invention provides a novel compound and an organic light emitting device comprising the same.

The invention belongs to the technical field of organic compounds, and particularly relates to a compound and an organic electroluminescent device. The structure of the compound is shown as a formula (I): # imgabs0 #. The compound has the advantages of high luminous efficiency, low driving voltage, long service life and the like.

The invention provides an organic compound and application thereof, and an organic electroluminescent device comprising the same, the organic compound has a structure as shown in a formula (I), through the design of a molecular structure, the organic compound has good TADF characteristics, meanwhile, the carrier transport performance and stability are remarkably improved, and the organic compound is endowed with excellent photoelectric properties. The organic compound is used for a light-emitting layer of an organic electroluminescent device, so that the device has higher light-emitting efficiency and excellent color purity, the external quantum efficiency is improved, and the driving voltage is reduced. # imgabs0 #

The embodiment of the present invention discloses an optical signal sending device, including an optical modulator, a differential driver, and a phase modulator, wherein the optical modulator includes an optical input end, a first modulation area, a connection area, a second modulation area, and an optical output end; the first modulation area includes a first modulation arm and a second modulation arm, the second modulation area includes a third modulation arm and a fourth modulation arm, and each modulation arm includes an optical waveguide and electrodes on both sides thereof. The modulation of the photoelectric signal is realized by driving the two modulation areas with a differential drive signal, and the stacked arrangement of the modulation arms greatly reduces the volume of the optical modulator, thereby facilitating the miniaturization of devices and equipment.

The invention provides a compound as shown in a general formula (I). The compound has a parent structure of 1, 2-disubstituted naphthalene biarylamine, is high in bond energy between atoms, has good thermal stability, is beneficial to solid-state accumulation between molecules, is high in hole transition capability, is used as a hole transport material, can effectively reduce the driving voltage of a device and improve the luminous efficiency of the device, and has a good application prospect. The service life of devices is prolonged. The invention also provides an organic electroluminescent device and a display device containing the compound shown in the general formula (I). # imgabs0 #

The present invention relates to the field of display technology, and in particular to an organic material composition and its application. The present invention provides an organic material composition, the organic material composition comprises a first compound and a second compound, the first compound and the second compound having the following structures: Formula (1), Formula (2), the first compound having the structure shown in Formula (1) and the second compound having the structure shown in Formula (2) cooperate with each other to facilitate the matching of HOMO and LUMO energy levels with adjacent energy levels, so that the organic material composition obtains higher stability and more balanced carrier mobility, thereby making the organic electroluminescent device containing the material have a better lifespan, and also have a lower driving voltage and higher efficiency.

Disclosed is an organic EL element material represented by the following general formula (1): wherein, in the general formula (1), any one of X1 to X3 is a nitrogen atom, and others are methine groups; L1 is a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthylene group, or substituted or unsubstituted anthrylene group; L2 is single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthylene group, or a substituted or unsubstituted anthrylene group, in which when these groups are substituted, the substituent is an alkyl group or an alkoxy group; A is a phenyl group or a pyridyl group; and n is 0 or 1. An organic EL element excellent in luminance efficiency and durability life is provided.

The present invention relates to a composition for an organic electroluminescent element and an organic electroluminescent element comprising the same, the composition for an organic electroluminescent element comprising a first host represented by Chemical Formula 1 and a second host represented by Chemical Formula 2, the details of the Chemical Formulae 1 and 2 being the same as defined in the specification.

The invention provides an organic compound, a preparation method thereof and an organic electroluminescent device, and belongs to the technical field of luminescent materials, and the organic compound has a structure as shown in a general formula I. The organic compound is used as a luminescent auxiliary material, can effectively improve the luminescent efficiency and stability of the organic electroluminescent device, and has good application prospects. The service life is prolonged, the driving voltage is reduced, and the device is endowed with more excellent comprehensive performance.

The invention provides a 6, 6-dimethyl-6H-benzo [cd] pyrene compound, an intermediate thereof, an organic electroluminescent device and a display device, and relates to the technical field of organic photoelectricity. The structural general formula of the 6, 6-dimethyl-6H-benzo [cd] pyrene compound is # imgabs0 #, and m and n are respectively and independently selected from 0 or 1; hydrogen atoms in the formula I are respectively and independently substituted or not substituted by deuterium atoms, F, CN, C1-C12 alkyl, C6-C30 aryl or C3-C30 aromatic heterocyclic groups. According to the present invention, the structure of the 6, 6-dimethyl-6H-benzo [cd] pyrene compound is designed, such that the obtained 6, 6-dimethyl-6H-benzo [cd] pyrene compound has excellent performance, and the organic light-emitting device prepared by using the 6, 6-dimethyl-6H-benzo [cd] pyrene compound as the light-emitting layer material has characteristics of low driving voltage, high current efficiency and long service life.

An embodiment of the present invention is directed to an organic electronic device capable of ensuring high luminous efficiency, low driving voltage, and high heat resistance and improving color purity or lifespan.

The utility model discloses a kind of dielectric fiber driven grippers, including mounting base and the assembly on the mounting base of several clamping jaw mechanisms, all the clamping jaw mechanisms are distributed along circumference, to realize the automatic centring of object and catch;Each the clamping jaw mechanism includes hingedly connected first clamping jaw and second clamping jaw, and the first dielectric fiber driver for controlling the centripetal or centrifugal motion of the first clamping jaw is connected between the first clamping jaw and the second clamping jaw;The second clamping jaw is assembled on the mounting base.The utility model successfully provides a kind of gripper solution with low driving voltage, simple structure, light weight, high reliability and good grasping adaptability by combining low-voltage dielectric fiber driver with optimized design rigid clamping jaw mechanism, and it has excellent comprehensive performance and good application value.

The invention discloses a droplet radio frequency micro-electromechanical system switch based on piezoelectric ceramic film drive, which mainly solves the problems of large driving voltage and weak resistance to external acceleration signal interference of existing radio frequency micro-electromechanical system switches. The switch comprises three layers of substrates, namely, lower, middle and upper layers. The upper substrate (3) is provided with two metal pads (9, 10), and the upper and lower surfaces are provided with piezoelectric ceramic films (6) and back cavities (7) respectively; the lower substrate (1) is provided with a coplanar waveguide (4) composed of two ground electrodes (41, 43) and two signal electrodes (42, 44); the middle substrate (2) is provided with a through groove (8), which is located above the signal electrode, and part of the two ground electrodes is exposed in the through groove; the through groove is aligned with the center of the back cavity, and is connected from top to bottom, and contains a mercury droplet (5); the three layers of substrates are packaged as one. The invention has low driving voltage, strong resistance to external acceleration signal interference, small size, low cost, and can be used in micro-electromechanical systems.

The present application provides a heterocyclic compound represented by formula 1, an organic light emitting element including the same, and a composition for forming an organic layer.

The present invention provides an organic electroluminescent material and an organic electroluminescent device containing a dual host material, wherein the general structural formula of the organic electroluminescent host material is shown in general formula 1, and the compound structure of general formula 1 of the present invention has good stereoregularity, which avoids the aggregation quenching effect caused by the structural plane stacking during the structure evaporation process, and improves the lifespan; at the same time, the structure with stronger stereoregularity effectively reduces the evaporation temperature, ensures the thermal stability of the material during the evaporation process, and improves the service life of the material. The organic electroluminescent device of the present invention disperses triplet excitons on two hosts by using a dual host material, reduces triplet-triplet annihilation, and can improve the luminous efficiency and service life of the device while reducing the driving voltage of the organic electroluminescent device.