Jinghua NIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: The present disclosure provides an azulene ring-containing compound, its use, and an organic photoelectric device including the same. The azulene ring-containing compound is a compound comprising a structure of Formula I. The organic photoelectric device includes an anode, a cathode, and one or more organic thin film layers located between the anode and the cathode; and at least one of the organic thin film layers contains the above-mentioned azulene ring-containing compound comprising the structure of Formula I. The azulene ring-containing compound provided by the present disclosure has an energy level difference ?Est?0.3 eV between the lowest singlet state S1 and the lowest triplet state T1, and has a light-emitting mechanism of a thermally activated delayed fluorescent material, and can be used as a thermally activated delayed fluorescent material for organic photoelectric device, so that the light-emitting efficiency of the device is improved.
Abstract: The present disclosure relates to the field of organic electroluminescence technology, and in particular to a compound, an organic electroluminescent device, and a display equipment. The compound of the present disclosure has the structure shown in Formula (I).
Abstract: The present disclosure provides a compound for a display panel. The compound includes elements selected from O, S or N, electron-donor groups and electron-accepting groups. The OLED device in the display panel includes an anode, a cathode, and at least one organic thin film layer between the anode and the cathode. The organic thin film layer includes a light emitting layer, the light emitting layer includes the compound of the present disclosure, and the compound is used to be any one of a host material, a doping material, and a co-doping material. The compound reduces energy level difference between singlet and triplet states ?EST through design of the compound molecular structure. The compound realizes an efficient reverse intersystem crossing process, has typical TADF characteristics, and can be used as a light-emitting layer material of an OLED device to improve luminous efficiency and working life.
Abstract: Provided are a compound and an organic electro-optical device containing the same. The compound has a structure represented by Formula I. The organic electro-optical device comprises an anode, a cathode, and at least one organic thin film layer located between the cathode and the anode. The molecule of the compound provided by the present disclosure has higher rigidity, a large conjugated system, a deeper LUMO energy level, a higher triplet energy level and good molecular stability, and is not easy to crystallize, and thus the compound can be used as an electron transport material or a hole blocking material of the organic electro-optical device, facilitating the reduction of the turn-on voltage of the device, the improvement of current efficiency and the increase of service life.
Abstract: The present disclosure describes an electroluminescent material which is formed of a compound having a structure of Formula (I), an OLED display panel utilizing the compound and an electronic device having the OLED display panel. The OLED display panel includes a first electrode, a second electrode, and an organic thin film layer disposed between the first electrode and the second electrode. The organic thin film layer comprises an electron transport layer which comprises any one or a combination of at least two of the compounds. The electroluminescent material has a triplet energy level ET of ?2.7 eV, a HOMO energy level of ??5.85 eV, and a glass transition temperature of >120° C. This compound improves luminous efficiency in the OLED display panel and the electronic device.
Abstract: Provided are an organic light-emitting display panel and a display device. The organic light-emitting display includes an array substrate and organic light-emitting components each having an anode, a cathode and an organic functional layer. The organic functional layer includes an organic light-emitting layer, a first electron transmission layer, and a hole injection layer. LUMO1 and LUMO4 satisfy: |LUMO1?LUMO4|<1.7 eV. HOMO5 and HOMO4 satisfy: |HOMO5?HOMO4|<1 eV. A work function ?1 of the first dopant and a work function ?4 of the cathode satisfy: ?1<?4, and a work function ?2 of the second dopant and a work function ?3 of the anode satisfy: ?2>?3.
Abstract: The present disclosure provides an organic compound, an electron transport material, and an application thereof. The organic compound has a structure as shown in Formula I. Design of molecular structure and substituents enables it to undergo tridentate coordination or tetradentate coordination with metal, and more stably and firmly combination with metal, so that it has stronger stability and longer working life when used as an electron transport material, which effectively solves a problem of rising drift voltage. The organic compound has greater rigid distortion, which can suppress an increase of intermolecular attraction and prevent it from forming a planar structure to cause excessive intermolecular attraction. The organic compound is used as an electron transport material, and can be applied to an electron transport layer and/or an electron injection layer of an OLED device, which can effectively improve luminous efficiency and working life of the device, and reduce turn-on voltage.
Abstract: The present disclosure belongs to the technical field of organic light-emitting diods (OLEDs), and provides a compound used as an electron transmission material of OLEDs. Molecules of the compounds include an aromatic ring (or aromatic fused ring) and a phenanthroline group that are connected to each other. In an embodiment, the compound according to the present disclosure includes two types of groups, i.e., an aromatic ring (or aromatic fused ring) and a phenanthroline (or benzoquinoline) group. These two groups not only have good electron accepting ability, but also can be well doped with metals. The planarity of the two groups is conducive to the stacking of molecules, which facilitates the combination of holes and electrons and generates excitons, thereby increasing the electron mobility of the material and improving efficiency of device.
Abstract: Provided are an organic compound, a P-type doped material and an application thereof. The organic compound has a structure represented by Formula I, and through a molecular structure design, the organic compound has a lowest unoccupied molecular orbital energy level which is close to an anode work function and a highest occupied molecular orbital energy level of a hole transport layer, effectively promoting the generation of holes. The organic compound has a suitable molecular weight, low volatility and high stability, sufficiently satisfying an evaporation preparation process of OLED devices; moreover, the synthesis method is simple and low cost, achieving large-scale application.
Abstract: The present disclosure provides a compound having a formula (I): where A represents a nitrogen-containing heteroaromatic ring substituent; and L is one or more selected from a single bond, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C3-C8 cycloalkyl, substituted or unsubstituted C1-C8 alkoxy, substituted or unsubstituted C3-C8 heterocyclyl, substituted or unsubstituted C6-C40 aryl, and substituted or unsubstituted C4-C40 heteroaryl.
Abstract: The disclosure relates to the field of organic electroluminescence technologies, in particular to a compound, an organic electroluminescent device and a display device. The compound has a structure as shown in Formula (I), wherein X1-X9 are each independently a C or N atom, and at least one of X1-X9 is an N atom; L is selected from substituted or unsubstituted C5-C40 aryl, and substituted or unsubstituted C3-C40 heteroaryl; Ar is Formula (II), wherein X is selected from an O or S atom; R1-R6 are each independently selected from substituted or unsubstituted C5-C40 aryl, and substituted or unsubstituted C3-C40 heteroaryl; p1-p4 are each independently selected from 0 or 1; p5-p6 are each independently selected from 0, 1, 2, or 3; m is selected from 0, 1, 2, or 3; n is selected from 1, 2, or 3; and * represents a connection site.
Abstract: The present disclosure describes a compound, a light-emitting material, an organic light-emitting display panel and an organic light-emitting display device. The compound has the structure of Formula I. The light-emitting material comprises any one or a combination of at least two of the compounds. The organic light-emitting display panel comprises an anode and a cathode disposed opposite to each other, and an organic layer disposed between the anode and the cathode. The material of the organic layer comprises any one or a combination of at least two of the compounds. The organic light-emitting display device comprises the organic light-emitting display panel. The compound has an energy level difference between a singlet and a triplet states as ?Est?0.30 eV, and, when used in an organic light-emitting display panel, can further increase the luminous efficiency of the device.
Abstract: A nitrogen heterocyclic compound having a structure of Chemical Formula I is provided. z is 1 or 2, m and n are each 1 or 2, p and q are each 0, 1 or 2. X1-X6 are each independently nitrogen or carbon, and at least one of X1-X6 is nitrogen. R1, R2 and R3 are each independently C1-C10 linear or branched alkyl, substituted or unsubstituted aryl, fused aryl, an aromatic heterocyclic group, or a fused aromatic heterocyclic group. R1 and R2 may be otherwise a single bond. Ar1 and Ar2 are each substituted or unsubstituted aryl, fused aryl, an aromatic heterocyclic group, or a fused aromatic heterocyclic group. The nitrogen heterocyclic compound has a higher refractive index, can improve light extraction efficiency and luminous efficiency and alleviate angular dependence of luminescence when it is used as a capping layer CPL of an OLED device.
Abstract: The present disclosure relates provides an compound represented by Chemical Formula 1, in which Ar1, Ar2, Ar3 and Ar4 are C6-C40 aryl, or C5-C40 heteroaryl; R1 and R2 are —C(R)2—, —N(R)—, —O—, or —S—; X1, X2 and X3 are C or N; L1 and L2 are phenylene, naphthylene, or biphenylene; Y1 and Y2 are each an electron-withdrawing group selected from a N-containing heterocyclic group, or a cyano-containing group. The compound of the present disclosure has bipolar characteristics of simultaneously transmitting holes and electrons. The bipolar transmission host is beneficial to charge transmission balance in the light-emitting layer, and can widen the exciton recombination region, to simplify the device structure and improving device efficiency. The present disclosure further provides a display panel and a display apparatus.
Abstract: An organic compound can be applied as a host material for an OLED display device. The compound has a structure represented by Formula (I): a and b, being independently 1, 2 or 3, respectively represent the numbers of electron donor D and electron acceptor A; c and d, independently being 0, 1, or 2, respectively representing the numbers of group L1 and group L2. D, L1 and L2 are each alkyl, cycloalkylene, heterocyclic group, aryl, heteroaryl, fused aryl, or fused heteroaryl; and A is selected from nitrogen-containing heterocyclic substituents, cyano-containing substituents, triaryl-boron-derived substituents, and phosphoxy-containing substituents. The compound has a D-(?)-?-(?)-A structure with bipolarity, and the ? bond can interrupt an intramolecular charge transfer between D and A, so that the excited state is limited to a local excited state in moiety of D or A, and the compound has a small excited-state dipole moment.
Abstract: The present disclosure provides an aromatic heterocyclic compound having property of thermally activated delayed fluorescence (TADF). The aromatic heterocyclic compound has a structure represented by Formula (I), in which X1 and X2 each is S, O, Se, or C; D is an electron donor, A is an electron acceptor; m is a number of the electron donor D, and the m electron donors D are the same or different; n is a number of the electron acceptor, and the n electron acceptors are the same or different; and m and n are 1 or 2. The aromatic heterocyclic compound provides a high luminescence efficiency. Organic light-emitting display devices including such aromatic heterocyclic compound have improved luminescence efficiency, lower cost and longer service life by using the aromatic heterocyclic compound as a light-emitting material, a host material, or a guest material.
Abstract: A compound according to Formula (1), in which D is an electron donor containing a nitrogen atom and is bonded to a benzene ring through the nitrogen atom; A is an electron acceptor containing a boron atom and is bonded to a benzene ring through the boron atom; m and n are each an integer selected from 1, 2 or 3; and R11, R12, R13, R14 are each independently selected from the group consisting of a hydrogen atom, alkyl, alkoxy, cyano, trifluoromethyl, an electron acceptor A?, and a nitrogen-containing electron donor D. In the compound, biphenyl acts as a linking unit between the electron donor D and the electron acceptor A, such that units D and A are located at different positions of the molecule, realizing effective separation between HOMO and LUMO. In addition, the light absorption and vibration strength of the molecule are enhanced.
Abstract: A display device includes an eyeball tracking inductor, a display panel and a processor, where the processor is electrically connected to the eyeball tracking inductor and the display panel separately; the eyeball tracking inductor is configured to identify user eyeball image information; the processor is configured to determine a gaze region and a split view region of a user viewing the display panel, according to the user eyeball image information, control the gaze region to be displayed at a first resolution, and control the split vision region of the display panel to be displayed at a second resolution, where the first resolution is greater than the second resolution.
Abstract: The present disclosure relates to a compound, an organic electroluminescent device, and a display device. The compound has a structure of formula (I) X is selected from a C atom, a Si atom, a B atom, or a P atom; Y1 to Y4 are each independently selected from a C atom or an N atom; A and B are each independently selected from any one or more of a substituted or unsubstituted C6-C40 aryl group and a substituted or unsubstituted C4-C40 heteroaryl group; R1 is selected from carbonyl, C1-C9 alkyl, a substituted or unsubstituted C6-C18 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group; and R2 and R3 are each independently selected from any one of a C1-C9 alkyl group, a substituted or unsubstituted C6-C18 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group, and n is selected from 0 or 1.