4534 results about "Organic electroluminescence" patented technology

The invention discloses an organic electroluminescent compound and a luminescent device. The organic electroluminescent compound has a structure as shown in a formula (1). In the structure of the N-type compound provided by the invention, an electron-rich group formed by carbazole and phenyl connected with the carbazole is substituted by deuterium, and the deuterated P-type compound in the core region is matched, so that the chemical stability, photoelectric stability and thermal stability of the structure of the luminescent material can be effectively improved, the stability of a luminescent device using the material is further improved, and the service life of the luminescent device is prolonged; meanwhile, the N-type compound and the deuterated P-type compound in the core area can form a good Premix material, good P / N stability and mass production stability are achieved in the evaporation process, the formed Premix material has more balanced carrier mobility, the efficiency of a device is greatly improved, and the service life of the device is greatly prolonged. And # imgabs0 #.

An organic light-emitting device comprises an anode, a cathode and an organic layer formed between the anode and the cathode, and the organic layer comprises a hole injection layer, a hole transmission area, an electron blocking layer, a light-emitting area and an electron transmission area. The hole transport region comprises a first material and a second material, the first material and the second material are sequentially evaporated to form two hole transport layers, and the first material is selected from a compound shown in the formula 1; and the second material is selected from a compound shown in a formula 2. According to the invention, the first material with a high refractive index is used as the first hole transport layer, the second material with a low refractive index is used as the second hole transport layer, and the structures of the first material and the second material are respectively limited at the same time. The invention overcomes the limitation of a single material or a simple mixed material in the aspects of hole transport and luminous efficiency. .

The invention belongs to the technical field of OLEDs, and provides a polycyclic compound containing triphenyl silicon and a polyalkyl substituent group and an organic electroluminescent device containing the polycyclic compound. The structural general formula of the polycyclic compound is as shown in formula I in the specification. Benzofuran with higher electronegativity is introduced to a ring structure composed of nitrogen atoms and boron atoms, triphenyl silicon is introduced to the para-position of boron, and the synergistic effect of benzofuran and triphenyl silicon can significantly enhance the multiple resonance of a light-emitting core and reduce vibration relaxation. Due to simultaneous use of the benzofuran and the triphenyl silicon, the problems of vibration relaxation increase, spectrum widening and the like caused by introduction of the polyalkyl substituent are remarkably improved, the luminous efficiency of the material is remarkably improved, and the color purity is improved, so that the requirement of BT.2020 wide color gamut display standard on a luminescent spectrum is met. I

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to an electron transport material, an OLED with the electron transport material and an organic light-emitting device with the electron transport material. According to the electron transport material disclosed by the invention, triazinyl is taken as a framework, phenyl and cyano-substituted biphenyl is taken as a specific substituent group, methyl, adamantyl, phenyl and pyridyl are limited to be matched, and the electron transport material is used as a material for forming an electron transport layer to manufacture an organic electroluminescent device, so that the evaporation process of the device can be smoothly carried out; and the light-emitting efficiency of the organic light-emitting device is effectively improved, and the application prospect is very good.

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to a boron-nitrogen compound and an organic electroluminescent device comprising the same. The boron-nitrogen compound disclosed by the invention has good electron and hole receiving capability, and interaction among luminescent molecules can be effectively inhibited by introducing a large-steric-hindrance double-spiro group. Specifically, the boron-nitrogen compound provided by the invention is used as a functional layer, especially as an organic electroluminescent device manufactured by a luminescent layer, the current efficiency is improved, the efficiency of the device is greatly improved, and the service life of the device is greatly prolonged. Therefore, after most electrons and holes are compounded, energy is effectively transferred to the boron-nitrogen compound, so that high luminous efficiency is realized.

The invention belongs to the technical field of organic electroluminescent materials, and particularly relates to a carbazole-containing compound and an organic electroluminescent device.The carbazole-containing compound is applied as a light extraction layer in the organic electroluminescent device, and due to the fact that the carbazole-containing compound has the high refractive index characteristic, the light extraction efficiency of the organic electroluminescent device can be improved; the series of compounds have wide application prospects.

The invention discloses an anthracene compound and an organic electroluminescent device. The compound has a structure as shown in a formula (1): # imgabs0 #, a ring A is selected from a formula (2) or a formula (3): # imgabs1 #, and the compound can be used as a blue light host material in an OLED luminescent device, has the advantages of low driving voltage, high luminous efficiency, long device life and the like, and has the potential of being applied to the AMOLED industry.

To provide a compound capable of improving the emission efficiency of an organic electroluminescent device.SOLUTION: The invention provides a compound represented by the formula (2), where: Ar2 is a substituted or unsubstituted aryl group having 6-50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5-50 ring-forming atoms; L2 is a single bond, a substituted or unsubstituted arylene group having 6-50 ring-forming carbon atoms, or a divalent substituted or unsubstituted heterocyclic group having 5-50 ring-forming atoms; and D21 is a group represented by the formula (20) in the figure.SELECTED DRAWING: None

The present invention relates to a novel organic compound and an organic electroluminescent device using same and, more specifically, to an organic compound that exhibits excellent electron transport ability, heat resistance, carrier transport capability, and luminescence, and an organic electroluminescent device in which the organic compound is included in one or more organic layers, thereby improving properties such as emission efficiency, driving voltage, and lifespan.

The invention relates to an organic compound, application of the compound and an organic electroluminescent device containing the compound. The organic compound has a structure as shown in formula (1), ring A, ring B, ring C, ring D, ring E, ring F, ring G, ring H and ring I independently represent one of C6-C60 aromatic rings and C5-C60 heteroaromatic rings, at least one of the ring E and the ring F is a naphthalene ring, and at least one of the ring G and the ring H is a naphthalene ring; w1, W2 and W3 are respectively and independently selected from a single bond, O, CO, SO2, S, NR1, CR2R3 or SiR4R5; and m1, m2 and m3 are respectively and independently 0 or 1. After the compound is prepared and applied to the organic electroluminescent device, the device has good performance of high color purity and high luminous efficiency, meanwhile, low-efficiency roll-off of the electroluminescent device is achieved, and the service life of the device is extremely long.

Provided are organic compounds comprising as the central structure two 6-membered aromatic rings which are bond to each other via a direct bond, wherein a first ring of the two 6-membered aromatic rings comprises at least one nitrogen atom but not more than three nitrogen atoms. Also provided are formulations comprising these organic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organic compounds.

The invention provides an organic electroluminescent device fault detection system and method based on image processing, and relates to the technical field of organic electroluminescent device fault detection. The system comprises an image acquisition module, an image preprocessing module, a feature extraction module and a fault detection module. The image acquisition module acquires an excited-state light-emitting image of the organic light-emitting device; the image preprocessing module preprocesses the excited-state light-emitting image to obtain a preprocessed image; a feature extraction module performs feature extraction on the preprocessed image to obtain a fusion feature vector; the fault detection module constructs a channel-space two-dimensional attention mechanism and identifies fault classification and positioning information of the organic light-emitting device. According to the method, through efficient image preprocessing, intelligent feature extraction and accurate classification decision, the automation and intelligence level of fault detection is improved, the labor cost is reduced, the false detection and omission ratio is reduced, and powerful technical support and guarantee are provided for production of organic electroluminescent devices.

The invention discloses an organic electroluminescent material and an organic electroluminescent device and application thereof.The organic electroluminescent material can serve as a functional layer of the organic electroluminescent device, 9-alkyl-9-phenyl-9H-fluorene serves as a parent nucleus and is directly connected with arylamine on the parent nucleus, one side chain of the arylamine is aryl or heteroaryl, the other side chain of the arylamine is 1, 1, 4, 5, 6-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1 Compared with other compounds, the organic electroluminescent material compound disclosed by the invention has the advantages that the transverse electric leakage is small, and the phenomena that adjacent pixels are lightened, transverse crosstalk is generated between adjacent sub-pixels and color display is influenced due to transverse leakage current of the adjacent pixels in a device can be reduced. The organic electroluminescent material is used as a functional layer of the organic electroluminescent device, and the problems that color display is affected and picture display is abnormal due to transverse electric leakage of an OLED display device can be solved.

Provided are organometallic compounds including a ligand LA ofAlso provided are formulations including these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

The invention provides a benzanthracene compound, an intermediate and an organic electroluminescent device, and relates to the technical field of organic electroluminescent materials. The benzanthracene compound provided by the invention can be used as a main body material of a light-emitting layer of an OLED light-emitting device, so that the OLED light-emitting device has relatively low driving voltage, relatively high current efficiency and relatively long service life.

The invention provides a compound containing a silicon group and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescent materials. When the compound containing the silicon group is used as a covering layer material, the glass transition temperature is high, the thermal stability and the chemical stability are good, the light transmittance of a device can be improved, aging of the device is delayed, and therefore the service life of the device is effectively prolonged; and the compound has weak metal adsorption capacity, and can effectively inhibit the deposition of a metal electrode material on the surface of a nucleation inhibition layer when being applied to the nucleation inhibition layer, thereby improving the performance of the device. In conclusion, the silicon group-containing compound provided by the invention can be widely applied to the fields of panel display and the like, and has a good development prospect.

The invention relates to the technical field of organic electroluminescence, in particular to an organic electroluminescence device. A hole transport region of the organic electroluminescent device provided by the invention comprises a first hole transport layer and a second hole transport layer, the refractive index n (HT1) of a compound contained in the first hole transport layer is between 1.70 and 2.20, the refractive index n (HT2) of a compound contained in the second hole transport layer is between 1.60 and 1.90, and the hole transport region comprises a compound shown in the formula 1, the compound has excellent hole transport performance, and the luminous efficiency and the service life of a device are improved; in addition, the hole transport region can further contain a compound shown in the formula 2, and the device effect can be further improved. The organic light-emitting device provided by the invention has good application effect and industrialization prospect, and can be applied to various fields such as display, illumination, business and medicine.

The invention relates to a high-efficiency near-ultraviolet heat exciton compound with circular polarization property and application of the high-efficiency near-ultraviolet heat exciton compound in preparation of a circular polarization organic electroluminescent device, and belongs to the technical field of organic photoelectric materials. The organic electroluminescent material is a high-efficiency near-ultraviolet heat exciton compound with circular polarization property, nine pairs of near-ultraviolet enantiomers are successfully designed and synthesized by combining chiral group binaphthol with fluorene with high luminous efficiency, and the nine pairs of near-ultraviolet enantiomers all show obvious circular polarization luminous property and high fluorescence quantum yield. The electroluminescent devices prepared based on the nine pairs of near ultraviolet enantiomers all show near ultraviolet emission, and the external quantum efficiency is 3.9%, 3.1%, 4.5%, 7.5%, 6.3%, 5.0%, 10.3%, 9.2% and 11.6% respectively. A new visual angle is provided for developing a near ultraviolet heat exciton material with circular polarization luminescence and high efficiency at the same time, and 3D and wide color gamut display can be directly achieved in the future.

An organic EL device includes a first hole transporting zone including a first anode-side organic layer and a second anode-side organic layer, in which at least one of the first anode-side organic layer or the second anode-side organic layer contains an additive material, and when the first anode-side organic layer contains a fourth material as the additive material, Numerical Formula N1 and N2 are satisfied:NM1>NM2(Numerical⁢ Formula⁢ N1)NM1⁢4>N⁢M10(Numerical⁢ Formula⁢ N2)where NM1 represents a refractive index of a constituent material in the first anode-side organic layer; NM2 represents a refractive index of a constituent material in the second anode-side organic layer; NM10 represents a refractive index of the constituent material in the first anode-side organic layer not containing the fourth material; and NM14 represents a refractive index of the constituent material in the first anode-side organic layer containing the fourth material.

A heteroaryl amine derivative is provided that contributes to a substantial improvement in the lifespan of an organic electroluminescent device by effectively absorbing high-energy external light in the UV region to minimizes damages to organic materials inside the organic electroluminescent device. An organic electroluminescent device according to the present invention comprises: a first electrode; a second electrode; at least one organic material layer disposed between the first electrode and the second electrode; and a capping layer, wherein the capping layer contains a heteroaryl amine derivative represented by chemical formula 1 according to the present invention.

The invention discloses an organic compound containing phenanthrene benzofuran, and an organic electroluminescent device, a display device and a lighting device comprising the same. The structural general formula of the organic compound is as shown in formula I; wherein L1 and L2 each independently represent any one of a single bond and an arylene group with a carbon atom number of C6-C12; ar1 represents a substituted or unsubstituted aryl group having a carbon atom number of C6-C60; ar2 represents a group represented by formula II, and ring A represents phenanthryl. By introducing a phenanthrene benzofuran substituent substituted by a specific site into the structure, the molecular high-energy linear state energy level can be adjusted while the molecular polarity is adjusted, and the carrier injection and energy level difference are improved, so that the internal quantum efficiency of the material is improved. And the phenanthrene benzofuran substituent at the specific site and anthryl present a rigid structure, which is beneficial for ordered arrangement of molecules according to a certain orientation, so that the light extraction efficiency is improved, and the device performance can be significantly improved. I; iI

The invention belongs to the technical field of organic photoelectric materials, and particularly relates to a boron-nitrogen heterocyclic compound and an organic electroluminescent device thereof. The boron-nitrogen heterocyclic compound provided by the invention has relatively large steric hindrance, on one hand, molecular vibration is reduced, and the boron-nitrogen heterocyclic compound has relatively narrow half-peak width and can effectively improve the color purity of light emitted by a device; on the other hand, the distance between molecules is increased, the acting force between the molecules is weakened, quenching caused by aggregation is overcome, the luminous efficiency of the device can be improved, and the service life of the device can be prolonged.

In a current drive type display device of a variable refresh rate system such as an organic EL display device, an on-bias voltage line for supplying an on-bias voltage Vobs to be applied to a driving transistor in a pixel circuit is provided in a display portion in order to reduce an influence of a hysteresis characteristic of the driving transistor on display luminance. Therefore, when an operation mode is switched from the low refresh mode to the high refresh mode, among pixel circuits in the same column connected to the same data signal line, a pixel circuit to which data is written and a pixel circuit to which the on-bias voltage is applied can be mixed. This enables quick switching from the low refresh rate to the high refresh rate.

The invention provides a carbazole-containing heterocyclic compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The carbazole-containing heterocyclic compound provided by the invention has relatively high polarizability, is beneficial to improving the refractive index, and can reduce the total reflection phenomenon during light emission of the device and effectively improve the light extraction efficiency of the device when being applied to a covering layer of the organic electroluminescent device; and meanwhile, the compound has relatively high glass transition temperature and good film-forming property, and can isolate moisture and oxygen, so that the luminous efficiency and the service life of the organic electroluminescent device are further improved and prolonged. The preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of organic thin film transistors, panel display and the like and has good application effects and industrialization prospects.

The present invention relates to an organic electroluminescent device comprising a hole injection layer and a hole transport layer, and a display device comprising the organic electroluminescent device.

The invention discloses a boron-containing organic compound and an organic electroluminescent device prepared from the same, and belongs to the technical field of semiconductors. The structure of the organic compound is shown as a general formula (1), # imgabs0. When the compound is used as a doping material in a luminescent layer material of the organic electroluminescent device, the compound can be used as a red light doping material of the luminescent layer of the organic electroluminescent device, so that the luminescent efficiency of the device is improved, and the service life of the device is prolonged.

The invention relates to an organic compound, application of the compound and an organic electroluminescent device containing the compound. The organic compound has a structure as shown in a formula (1), ring A, ring B, ring C, ring D, ring E, ring F, ring G, ring H, ring I, ring J and ring K independently represent one of C5-C20 aromatic rings and C4-C20 heteroaromatic rings, X and Y are independently selected from C or Si, W1, W2 and W3 are independently selected from a single bond, O, CO, SO2, S, NR1, CR2R3 or SiR4R5, and m1, m2 and m3 are independently 0 or 1. After the compound is prepared and applied to the organic electroluminescent device, the device has good performance of high color purity and high luminous efficiency, meanwhile, low-efficiency roll-off of the electroluminescent device is achieved, and the service life of the device is extremely long. # imgabs0 #

The invention provides a sulfur-containing boron-nitrogen compound and application thereof, the sulfur-containing boron-nitrogen compound has a structure as shown in a formula I or a formula II, the boron-nitrogen compound has a narrow spectrum, and is used as a luminescent material for preparing a luminescent layer of an organic electroluminescent device, and the prepared organic electroluminescent device shows high efficiency and high stability, and can be used as a luminescent material for preparing a luminescent layer of the organic electroluminescent device. Meanwhile, the emission spectrum of the device is narrow, the electroluminescence belongs to emission from orange red light to near infrared light, and the highest external quantum efficiency of electroluminescence of the device is as high as 20% or above.

The present invention provides a novel prime material which is used in a compound of an organic electroluminescent device and which is characterized by comprising a compound having a structure represented by formula (I) # imgabs0. The compound of the present invention can be used in an electron blocking layer in an organic EL device. The preparation is simple, the transmission of carriers in the device can be improved and balanced, the voltage of the device is reduced, the luminous efficiency is improved, and the service life is prolonged.

The invention provides a luminescent material containing a cyclobutadiene structure, and a preparation method and application thereof, and relates to the technical field of organic electroluminescent materials. According to the cyclobutadiene-containing luminescent material provided by the invention, the anti-aromatic cyclobutadiene is fused into a binary nitrogen-containing fused heterocyclic skeleton, and excitation state vibration relaxation is inhibited by using the special electronic structure and high ring tension of the anti-aromatic cyclobutadiene, so that narrow-band luminescence is realized. By introducing the steric hindrance effect group, the aggregation fluorescence quenching phenomenon between luminescent parent nuclei is weakened, and the fluorescence quantum yield is improved. Different from a current mainstream multi-resonance mechanism, the design of the narrow-spectrum light-emitting molecule provided by the invention does not need to depend on the construction of a B / N-fused ring, and the molecular structure can be simplified to realize full-light-color ultra-narrow-band light emission. When the organic light-emitting diode is applied to an organic light-emitting device, an ultra-narrow full-width-at-half-peak electroluminescent spectrum and high device efficiency can be realized, and a better solution is provided for an ultra-high-definition organic light-emitting diode display technology.