159results about How to "Prevent postback" patented technology

The present invention relates to an electroluminescence device based on a boron-containing organic compound, wherein a main body material comprises a first organic compound and a second organic compound, the difference between a singlet state energy level and a triplet state energy level of the first organic compound is not greater than 0.2 eV, the singlet energy level of the second organic compound is greater than the singlet energy level of the first organic compound by more than 0.1 eV, and the triplet energy level of the second organic compound is greater than the triplet energy level of the first organic compound by more than 0.1 eV; the first organic compound and the second organic compound have the different carrier transport characteristics, wherein an object material is the boron-containing organic compound, the singlet energy level of the object material is lower than that of the first organic compound, and the triplet energy level of the object material is lower than that ofthe first organic compound. An organic light-emitting device prepared by the method has the characteristics of high efficiency and long service life.

The invention discloses an organic electroluminescent device. A light-emitting layer comprises a host material and a guest material. The host material is an exciplex formed by an electron donor material and an electron acceptor material, and the guest material is a thermally activated delayed fluorescent material. The singlet-state energy level of the host material is lower than the singlet-stateenergy level of the guest material. Since the singlet-state energy level of the exciplex as the host material in the light-emitting layer is lower than the singlet-state energy level of the thermallyactivated delayed fluorescent material, the generation of high-energy excitons is prevented, and molecular bond breakage due to high excitation energy is effectively suppressed. The singlet-state energy level of the exciplex is low, which is beneficial to reduce the excitation energy of the excitons in the device, and suppress the triplet state-triplet state annihilation, the triplet state-polaronquenching and the singlet state-triplet annihilation phenomena in the device, thereby reducing the efficiency roll-off of the device and prolonging the service life of the device.

The invention relates to an electroluminescent device based on an exciplex system and matched with a boron-containing organic compound, wherein a subject material contains a first organic compound anda second organic compound, the difference between the HOMO energy level of the first organic compound and the HOMO energy level of the second organic compound is 0.2 eV or more, and the difference between between the LUMO energy level of the first organic compound and the LUMO energy level of the second organic compound is 0.2 eV or more. A mixture or an interface formed by the first organic compound and the second organic compound generates an exciplex under the excitation of the light or an electric field, the singlet energy level of the exciplex is higher than that of an object material, and the triplet energy level of the exciplex is higher than that of the object material. The first organic compound and the second organic compound have different carrier transport characteristics, andthe object material is the boron-containing organic compound. An organic light-emitting device prepared by the method has the characteristics of high efficiency and long service life.

The invention belongs to the field of organic electroluminescent materials, and discloses a benzanthracene fluorenyl blue-light phosphorescent host material, a preparing method thereof and applications of the material. The structure formula of the material is shown in the specification. In the material, carbazole is a N-heteroaromatic structure and is an excellent hole transporting unit; and anthracene has a high fluorescence quantum yield, thus largely improving the triplet state energy level of the material and effectively preventing energy from being returned to the host material in a luminescent process, so that the light efficiency is increased.

The invention discloses a textile fabric conveying device, and belongs to the field of textile processing mechanical equipment. According to the textile fabric conveying device, a fabric unwinding mechanism and a fabric conveying mechanism are arranged on the two sides of a fabric conveying support correspondingly, a lifting fabric guide roller is horizontally arranged on the fabric conveying support between the fabric unwinding mechanism and the fabric conveying mechanism, the lifting fabric guide roller is horizontally and rotationally connected to a reciprocating lifting guide block, a fabric unwinding roller is horizontally, coaxially and fixedly arranged in the middle of a fabric unwinding rotary plate, a pressing plate damping swing rod is arranged on a fabric conveying support on the lower side of the fabric unwinding rotary plate, the two sides of a fabric non-return support are horizontally and rotationally connected with a front material guiding rotary roller and a rear material guiding rotary roller correspondingly, and a lifting material pressing rotary roller is arranged on the lower side of a fabric conveying rotary roller. The textile fabric conveying device is reasonable in structural design, textile fabrics can be efficiently, smoothly, sequentially and intermittently conveyed, stable, accurate and continuous sectional conveying of textile fabrics is achieved,the automation degree of textile fabric conveying and processing is improved, and the requirements of production and use are met.

The invention provides an organic electroluminescent compound, a preparation method and application thereof. The organic electroluminescent compound has a structure shown as formula I, is suitable foruse as a luminescent layer host material of an organic electroluminescent device, has double dipolarity, wherein the HOMO energy level and LUMO energy level are respectively positioned on different electron donating groups and electron withdrawing groups, and can match adjacent hole transport layer and electron transport layer, and the charge-hole transport balance is good, thus enlarging the area for compounding holes and electrons into electrons in the luminescent layer, reducing the exciton concentration, preventing triplet state-triplet state annihilation of the device, and improving thedevice efficiency. As a luminescent layer host material, the organic electroluminescent compound makes the area where carriers are compounded far from an adjacent interface of the luminescent layer and the hole or electron transport layer, improves the color purity of an OLED device, and at the same time can prevent excitons from passing back to the transport layer, thus further improving the device efficiency.

The invention discloses a digitized accurate ink supply method of a printing machine. Metering printing ink conveying units replace ink keys on a traditional printing machine; each metering printing ink conveying unit directly conveys printing ink to corresponding ink areas; and the volume or mass serves as metering basis, quantitative supply of the printing ink for each ink area is achieved. In the working state, the ink supply flow speed of each metering printing ink conveying unit is obtained through calculation according to the consumption amount of the printing ink of corresponding color plates and the corresponding ink areas in each printed sheet and the operation speed of the printing machine, and the ink supply flow speed of each metering printing ink conveying unit is calculated and adjusted in real time along with change of the operation speed of the printing machine. By means of the digitized accurate ink supply method of the printing machine, real-time accurate adjustment can be achieved, the automation degree and digitization degree are high, the adjustable range is wide, one-way printing ink conveying is achieved, and printing ink return is avoided.

The invention is a vehicle monitoring method, relating to a road vehicle traffic control method: the traffic management center sends an instruction to the GPS-comprising vehicle terminal of monitored vehicle; the monitored vehicle receives and stores the instruction; the vehicle terminal uses the first GPS effective point that has received the instruction as the longitude and latitude of the initial position of the vehicle and sends them to the traffic management center , and then calculates the mileage of the vehicle repeatedly according to the longitude and latitude of the vehicle at that time and by reviewing the previous longitude and latitude and adds the mileage to the total mileage data until the specified condition is met and then sends the longitude and latitude at that time and the total mileage data to the traffic management center; and the traffic management center receives and displays them as well the current time and receives the inquiry. The invention can add the number of monitored vehicles and reduce communication fees, simplify display contents and enlarge the monitoring range.

The invention provides an organic semiconductor material with a chemical formula shown below. The organic semiconductor material provided by the invention has bipolar carrier transportation capability, such that hole and electron transportations in a luminescent layer are balanced. The organic semiconductor material also has relatively high triplet state energy level and excellent thermal stability, such that energy is effectively prevented from being transported back to the main material during a luminescent process, and luminescent efficiency is greatly improved. The invention also provides a preparation method of the organic semiconductor material, and an electroluminescent device comprising the organic semiconductor material.

The invention discloses a phosphorescence host material, and a preparation method and applications thereof, and relates to the field of organic electroluminescence. The phosphorescence host material comprises carbazole with hole transmittability, and diphenylphosphine oxide / benzothiazole with electronic transmittability. The general structural formula of the phosphorescence host material is figured as follows; the phosphorescence host material has favorable heat stability, hole transmittability and economic transmittability at the same time; hole transmission and electronic transmission are balanced in a light-emitting layer, so that the light-emitting service life and the efficiency of the device are improved; the prepared photoelectric material has higher triplet-state energy level, and effectively prevents the energy from being transmitted back to the host material during the light-emitting process; and when the ninth position of carbazole is tert-butyl benzene and the third position of carbazole is diphenylphosphine oxide / benzothiazole derivate, the compound has good dissoluvability in an organic solvent, and is good in film-forming property.

An LED lamp comprises LED luminous units, a circuit board, a heat transfer board, a semiconductor refrigerating plate, a heat sink, a heat transfer plate and a heat transfer post. The LED luminous units, the circuit board, the heat transfer board, the semiconductor refrigerating plate and the heat sink are connected in sequence; the circuit board is used for mounting of the LED luminous units; the heat transfer board is used for transferring heat; the heat transfer plate is closely mounted to one sides of the LED luminous units; the heat transfer post which is protruded is arranged in the middle of the heat transfer plate; the circuit board is provided with a via hole corresponding to the heat transfer post, and the heat transfer post penetrates the via hole to be connected with the heat transfer board. Further, the heat sink comprises a base plate and a plurality of fins mounted on the base plate; the fins on the base plate encircle to form a cavity; a gap is formed between every two adjacent fins; and the cavity is communicated with the gaps. A plurality of piezoelectric oscillator plates are parallelly arranged in the cavity along a direction perpendicular to the fins and are connected with the fins. After power on, the piezoelectric oscillator plates bound in the cavity oscillate to compress air in the cavity to exhaust high-heat air in the cavity rapidly from the gaps, so that heat is dissipated and radiating efficiency of the LED lamp is improved.

The invention discloses a coaxial packaged laser which comprises a base with at least two pins, a laser chip and a semiconductor cooler arranged on the surface of the base. The surface of the semiconductor cooler is provided with a heat conduction substrate, and the laser chip and a third conducting layer are arranged on the surface of the heat conduction substrate, and the laser chip is in wire bonding connection with the third conducting layer. A first base body and a second base body are arranged on the surface of the base and located on the two sides of the heat conduction substrate. A first conductive layer is arranged on the surface of the first substrate, and the first conductive layer is welded with one pin of the base, the first conductive layer is in wire bonding connection withthe third conductive layer. A second conductive layer is arranged on the surface of the second substrate, and the second conductive layer is welded with the other pin of the base, and the second conductive layer is in wire bonding connection with the third conductive layer. The invention further provides an optical module. The electric connection mode of the laser chip and the pin and the matchingarrangement of the semiconductor cooler shorten the length of the whole wire bonding, ensure the heat dissipation of the high-speed laser chip and facilitate the transmission of high-speed signals.

The invention relates to an organic electroluminescent device based on an exciplex and excimer system. A light emitting layer host material includes first, second and third organic compounds. A mixture or lamination interface formed by the first organic matter and the second organic matter generates an exciplex under optical or electric excitation. The third organic compound is doped in a mixtureformed by the first organic compound and the second organic compound or a layer of a laminated interface, and the third organic compound forms an excimer. The singlet energy level of the exciplex is higher than that of the third organic compound, and the triplet energy level of the exciplex is higher than that of the third organic compound. The singlet energy level of the excimer is higher than that of the object material, and the triplet energy level of the excimer is higher than that of the object material. The first organic compound and the second organic compound have different carrier transport characteristics, and the object doping material is a fluorescent compound. The device has the characteristics of high efficiency and long service life.

The invention discloses a phosphorescent main body material applicable to a solution method manufacture procedure and a preparation method and application of the phosphorescent main body material in an organic electroluminescent device. The phosphorescent main body material comprises carbazole which has high triplet state, phosphorus oxygroup which has an electron transport capacity, and benzimidazole unit. The phosphorescent main body material has the following structural general formula. The phosphorescent main body material provided by the invention is applicable to the field of organic electroluminescence, and is good in thermostability, hole transport property and electron transport property, the hole transport and the electron transport in a luminescent layer can be balanced, the luminescence service life of the device can be greatly prolonged, and the efficiency of the device can be greatly improved.

The invention belongs to the field of organic semiconductor materials, and discloses a dibenzothiophene unit-containing blue light phosphorescent body material, a preparation method thereof and an organic electroluminescent device; and the structural formula of the body material is shown in the specification. The dibenzothiophene unit-containing blue light phosphorescent body material has higher triplet state energy level, can effectively prevent the energy from being back conveyed to the body material in the luminescence process.

The invention provides an LED (light emitting diode) lamp with a pipeline. The LED lamp comprises a base plate, a controller, a base, the pipeline, a lamp shade and a heat radiator, wherein LED lamp beads are encapsulated in the base plate, the pipeline is connected with the base, the lamp shade is connected with the base, the heat radiator is connected with the outer wall of the base, one end of the pipeline passes through a through hole and is connected with the base plate, a support frame is arranged in the base, and the other end of the pipeline is connected with the support frame. One side, connected with the pipeline, on the support frame is provided with a fan, one end, connected with the base plate, of the pipeline is provided with a first air outlet and second air outlets, and the base plate is connected between the first air outlet and the second air outlets. The lamp shade is provided with a plurality of first heat radiation holes, and the side wall of the base is provided with a plurality of second heat radiation holes. Net pieces are arranged on the inner wall of the pipeline, and the net pieces are connected with semiconductor refrigeration sheets. The LED lamp with the pipeline has the advantages that wind generated through the rotation of the fan arranged on the base can be simultaneously blown to the LED lamp beads and the back side and the front side of the base plate through the first outlet and the second air outlets; meanwhile, through the net pieces connected with the semiconductor refrigeration sheets in the pipeline, the temperature of the wind blown from the fan can be reduced, and the heat radiation effect is more obvious.

The invention provides a biomass particle combustor. The biomass particle combustor comprises feeding equipment, combustion equipment and blast air supply equipment, wherein the feeding equipment comprises a material pipe; the combustion equipment comprises an inner fire outlet pipe and an outlet fire guide pipe; the blast air supply equipment comprises a blast pipe, an outer air box and an inner air box; the inner air box is arranged inside the outer air box, and the blast pipe is communicated with the outer air box and the inner air box; the material pipe penetrates through the inner air box to be communicated with the inner fire outlet pipe; the inner fire outlet pipe is arranged on the outer wall of the inner air box and penetrates through the outer air box, and vent holes are formed in the inner fire outlet pipe; the outlet fire guide pipe is fixed to the outside of the outer air box to sleeve the part, outside the outer air box, of the inner fire outlet pipe, and a gap is reserved between the outlet fire guide pipe and the inner fire outlet pipe and communicated with the outer air box. The biomass particle combustor is reasonable in structural design, low in cost and high in combustion efficiency.

The present invention provides an organic semiconductor material having the following chemical formula, wherein R is C1-C20 alkyl, and n is an integer of 10-100. According to the present invention, the hole transporting property of the organic semiconductor material is 10<-5> cm<2> / (V.s) magnitude order, and the organic semiconductor material has a high triplet energy level of greater than 2.7 eV, such that the condition that energy is returned to the main body material during the luminescence process can be effectively prevented so as to substantially increase the luminescence efficiency; the organic semiconductor material can be used as the blue light phosphorescent main body material; and the organic semiconductor material preparation method adopts the simple synthesis route, and has characteristics of process reducing, easily available raw materials and manufacturing cost reducing.

The invention discloses a thickened triphenyl compound as well as a preparation method and application thereof. The thickened triphenyl compound has a structure shown as a formula (I). The parent nucleus of the thickened triphenyl compound is thickened triphenyl. Since the three benzene rings are non-coplanar, the thermal stability of molecules is improved. In addition, the non-coplanar structureof the thickened triphenyl can avoid molecular stacking, exciton generation is facilitated, and the luminous efficiency of the material is improved. By setting R1 and R2 substituent groups, the compound shown as the formula (I) has high overall structural rigidity, the thermal stability of the molecules can be improved, and the service life of the material is prolonged. The invention furthermore discloses an organic electroluminescence device. At least one functional layer contains the previous thickened triphenyl compound. The thickened triphenyl compound serves as a host material or a guestmaterial of the luminescent layer, the stability is high, and the luminous efficiency of the device is high.

The invention discloses an electron transport material and a preparation method and an application thereof. A compound used for preparing the material comprises phosphorus oxyl in a high triplet state, and pyridine and triazine units with electron transport capabilities, wherein in the high triplet state, energy can be effectively prevented from transmitted to a main body material in a light emitting process. The material has high electron transport capability, can be used for preventing energy retransmission in the light emitting process, and is applied to electron transport layers of blue light phosphorescent light organic electroluminescent devices; and the efficiency of a phosphorescence device is increased remarkably.

The invention relates to an apparatus for treating a multifilament thread in a melt-spinning process, wherein a treatment channel is formed between a housing plate and an impact plate. The housing plate has a nozzle bore which opens into the treatment channel and is connected to a compressed-air connection. Together with the housing plate, the impact plate forms an inlet opening and an outlet opening at both ends of the treatment channel. In order to check the swirling effects which are produced on the thread by the eddying within the treatment channel, according to the invention the impact plate has a thread guiding element in the part piece of the treatment channel between the nozzle bore and the inlet opening, which thread guiding element is configured so as to protrude into the treatment channel in order to deflect the thread.

The invention discloses a carbazolyl-based organic electroluminescence compound which has the structural general formula shown by formula (I), wherein R is H, CH3 or CH2CH3. The organic electroluminescence compound disclosed by the invention is used as phosphorescent host material in an organic electrophosphorescent device, and has good electronic transmission characteristic and thermal stability; and meanwhile, the host material has relatively high triplet state energy level and can effectively prevent back transfer of triplet state energy so as to improve the luminous efficiency and prolong the service life of the organic electrophosphorescent device.

The invention provides an organic semiconductor material. The organic semiconductor material has a chemical formula shown in the patent specification. The organic semiconductor material contains triphenylamine, fluorene and phenyl oxysulfide. Triphenylamine has hole transport performances. Fluorene and phenyl oxysulfide have electron transmission performances. Therefore, the organic semiconductor material is a bipolar red-light-emitting phosphorescent material having good hole transport performances and electron transmission performances. The invention also provides a preparation method of the organic semiconductor material and an electroluminescent device containing the organic semiconductor material.

The invention provides an organic semiconductor material. The chemical formula of the organic semiconductor material is shown in the specification. The organic semiconductor material has a high triplet-state energy level, and energy is effectively prevented from being delivered back to a main body material in a light-emitting process, so that the light-emitting efficiency is increased greatly, and high thermal stability is achieved. The invention further provides a preparation method of the organic semiconductor material, and an electroluminescent device comprising the organic semiconductor material.

Belonging to the field of organic semiconductor materials, the invention discloses a bipolar blue light phosphorescent host material, a preparation method and an organic electroluminescent device thereof. The host material has a structural formula shown as the specification. The bipolar blue light phosphorescent host material provided by the invention has bipolar carrier transport capacity, also has hole transport properties and electron transport properties at the same time, and enables balance transport of holes and electrons in a luminescent layer. With a high triplet state energy level, the host material can effectively prevent back transmission of energy to the host material in a luminescence process, thus greatly improving the luminescence efficiency.

The invention provides an organic semiconductor material. The organic semiconductor material has a chemical formula shown in the patent specification. The organic semiconductor material contains anthrazole and carbazole. Carbazole has a high triplet-state energy level and hole transport performances. Anthrazole has good rigidity, flatness, electron transmission performances and thermostability. Therefore, the organic semiconductor material is a bipolar blue-light-emitting host material. The invention also provides a preparation method of the organic semiconductor material and an electroluminescent device containing the organic semiconductor material.

The invention belongs to the field of organic semiconductor materials and discloses a carbazolyl blue phosphorescent host material as well as a preparation method and application thereof. A structural formula of the material is shown in the specification. The carbazolyl blue phosphorescent host material provided by the invention has the advantages that the host material has hole transport property and electron transport property at the same time, so that holes and electrons in a luminescent layer are balanced in transport; the host material also has a higher triplet energy level, so that energy is effectively prevented from being transferred back to the host material in the luminescence process, thus greatly improving the luminescence efficiency.

The invention relates to a compound containing a phosphorous oxy-group and a pyridine unit, and a method for preparing the same. The compound is composed of a phosphorous oxy-group with high triplet state and a pyridine unit having electron transfer capability; the structural formula of the compound is as shown in the specification, wherein R1 and R2 are phenyls or six-member nitrogen-bearing heterocyclic rings. The method for preparing the compound comprises the following steps of: firstly, evenly mixing compounds containing benzene and pyridine in a mol ratio of 1: (2-3) and arousing a chemical reaction, thereby obtaining a compound containing the phenyl and the pyridine; secondly, reacting the compound containing the phenyl and the pyridine with phenyl phosphorus in an organic solution in a mol ratio of 1: (0.4-0.5), thereby obtaining a compound containing the phenyl phosphorus and the pyridine unit; and finally, reacting the compound containing the phenyl phosphorus and the pyridine unit with hydrogen peroxide in a mol ratio of 1: (5-10), thereby obtaining the compound containing the phosphorous oxy-group and the pyridine unit. The method provided by the invention is rich in raw material source, convenient for synthesis, high in yield and suitable for large-scale production; and the material prepared by the method has high efficiency on electron transfer of phosphorescent and blue light systems.

Belonging to the field of organic semiconductor materials, the invention discloses a bipolar blue light phosphorescent compound, a preparation method thereof and an organic electroluminescent device. Specifically, the structural formula of the host material is shown as the specification. In the bipolar blue light phosphorescent compound provided by the invention, the carbazole group is an excellent hole transport unit; and the diphenyl phosphine oxygen group contains electron withdrawing P=O, and is a good electron transport unit. Therefore, the material has hole transport properties and electron transport properties at the same time, enables hole and electron transport balance in a luminescent layer, and has a high triplet state energy level, and effectively prevents back transport of energy to the host material in a luminescence process, thereby improving the luminous efficiency.