Patents by Inventor Yong Qiu
Yong Qiu 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).
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Publication number: 20100142367Abstract: A method and an apparatus for non-access stratum (NAS) message processing during handover in an evolved network are provided. The method includes the following steps. An evolved packet core (EPC) receives a message which indicates that a UE is being handed over sent by a source evolved NodeB (S-eNB), and stops sending an NAS message to the UE temporarily. The EPC receives a message which indicates that the UE returns to an S-eNB service area sent by the S-eNB. The EPC sends the NAS message to the UE through the S-eNB, if needed. With the method and the apparatus, the EPC can acquire a location of the UE in time in the case of a handover failure of the UE, a time limit of a retransmission timer is set precisely, and a specific implementation for forwarding an NAS message through an X2 interface is provided.Type: ApplicationFiled: February 12, 2010Publication date: June 10, 2010Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Hongzhuo ZHANG, Yong QIU, Ying HUANG, Qiang WANG
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Publication number: 20100113033Abstract: A communication system, a network handover processing method and a network handover processing apparatus are disclosed. The method includes the following steps: receiving, by a target evolution NodeB (T-eNB), identity information sent from a user equipment (UE), the identity information being allocated to the UE by a source evolution NodeB (S-eNB); and sending, by the T-eNB, parameters to the UE if identity information, matching the received identity information sent from the UE, is available in the T-eNB, wherein the parameters are allocated to the UE. The apparatus includes a receiving module and a sending module. The communication system, network handover processing method and network handover processing apparatus can reduce the state change times of the UE in the network handover process and save the system resources.Type: ApplicationFiled: January 7, 2010Publication date: May 6, 2010Applicant: Huawei Technologies Co., Ltd.Inventors: Yong Qiu, Min Huang, Ying Huang, Hongzhuo Zhang
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Publication number: 20100099407Abstract: A cell access control method and a user terminal are provided, the method includes: obtaining, by a user equipment (UE), cell access information through a pilot channel and/or a synchronization channel; determining a current cell is a macro base station cell or an HNB cell according to the cell access information; determining, when the current cell is an HNB cell, whether the UE is allowed to access the HNB cell according to HNB information of the cell access information, if the UE is allowed to access the HNB cell, performing the access processing, if the UE is not allowed to access the HNB, abandoning the access. A UE is provided accordingly.Type: ApplicationFiled: December 18, 2009Publication date: April 22, 2010Inventor: Yong Qiu
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Publication number: 20100046476Abstract: A synchronization method, a communication handover method, a radio network, and a RAN node are disclosed. The interface information synchronization method includes: determining whether a condition for initiating interface information update is fulfilled; and sending information about the S1 interface between the RAN node and the core network node, and/or information about the X2 interface between the RAN node and the neighboring RAN node to the neighboring RAN node if the condition for initiating interface information update fulfilled.Type: ApplicationFiled: October 30, 2009Publication date: February 25, 2010Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventor: Yong Qiu
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Publication number: 20090275334Abstract: The present invention provides a method and system for handing over a terminal to a macrocell and terminal, access node and gateway. The method includes: determining that the terminal is in a frequent handover state or a fast moving state; handing over the terminal to the macrocell according to the frequent handover state or the fast moving state and a preconfigured handover criterion.Type: ApplicationFiled: July 14, 2009Publication date: November 5, 2009Applicant: Huawei Technologies Co., Ltd.Inventors: Mingjiang Xie, Yong Qiu, Zongjie Wang
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Publication number: 20090267499Abstract: The present invention provides an organic light emitting device and a fabrication method thereof, comprising a substrate, an anode layer formed on said substrate, an organic function layer formed on said anode layer, and a cathode layer formed on said organic function layer, characterized in that, further comprising a cathode interface modification layer between said organic function layer and said cathode layer, wherein said cathode interface modification layer contains a compound AxByCz, A is an element of Group IA or IIA, B is an element of Group IIIA or VA, C is a hydrogen element, and 1?x?2, y ? [0,1], 1?z?4. In the present invention, the cathode interface modification layer is formed after forming a light emitting layer, the cathode interface modification layer contains a compound AxByCz, the electron injection ability at the cathode interface can be improved by adding the cathode interface modification layer, and hence the device performance can be significantly improved.Type: ApplicationFiled: April 22, 2009Publication date: October 29, 2009Inventors: Yong Qiu, Lian Duan, Yang Li, Guohui Zhang
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Publication number: 20090253426Abstract: A system and method for communication of multi-mode base stations is provided. The multi-mode base stations are communicatively coupled to each other through a uniform interface unit that provides a basal physical transmission bearer and a uniform transmission protocol stack, namely uniform logic interface, for transmitting a higher layer application protocol to support information interaction, such as load information, resource usage information, interference information, handover flow signaling information, data forwarding, between multi-mode base stations even base station sub-nodes in each multi-mode base station. The higher layer application protocol borne by the uniform transmission protocol stack is mainly a user plane protocol and a control plane protocol. The implementation function of the interface unit between base station sub-nodes in the multi-mode base station is further provided.Type: ApplicationFiled: June 12, 2009Publication date: October 8, 2009Applicant: Huawei Technologies Co., Ltd.Inventors: Yong Qiu, Mingjiang Xie, Yongfeng Deng
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Publication number: 20090189509Abstract: The present invention relates to monochromatic organic light emitting devices. The organic light emitting device includes a substrate, an anode, a cathode and an organic electroluminescent medium disposed between the anode and the cathode, wherein the organic electroluminescent medium includes compound monochromatic luminescent layer; and the compound monochromatic luminescent layer includes host A doped with monochromatic dopant and host B doped with monochromatic dopant, wherein the host A is consisted of two kinds of materials with different transporting characteristics, one is hole-transporting material, and the other is electron-transporting material. In addition, the present invention further relates to white organic light emitting devices, wherein the organic electroluminescent medium is consisted of at least one compound monochromatic luminescent layer, which includes host A doped with monochromatic dopant and host B doped with monochromatic dopant.Type: ApplicationFiled: December 3, 2008Publication date: July 30, 2009Applicants: Tsinghua University, Beijing Visionox Technology Co., Ltd., Kunshan Visionox Display Co., Ltd.Inventors: Yong Qiu, Kongwu Wu, Guohui Zhang, Lian Duan
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Patent number: 7501755Abstract: The present invention relates to an organic electroluminescence device and provides a new material composition scheme for an electron injection layer. The organic electroluminescence device of the present invention includes an electron injection layer which contains a material represented by formula AxByOz, wherein A is one of an alkali metal and an alkali earth metal, B is one of group VIII metals and 0<x?2, 0<y?3, 0<z?6. A is selected from one of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr and Ba. B is selected from one of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt. The electron injection layer can be formed of Al and AxByOz. The electron injection layer has high electron injection ability, and the device has low threshold voltage, high luminance, high efficiency and long life.Type: GrantFiled: July 28, 2005Date of Patent: March 10, 2009Assignees: Tsinghua University, Beijing Visionox Technology Co., Ltd.Inventors: Yong Qiu, Yudi Gao, Deqiang Zhang, Wang Liduo
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Publication number: 20090045737Abstract: The present invention relates to a method of preparing a Li film, wherein said Li film is fabricated by directly decomposing a compound of Li under a vacuum evaporation condition, and said compound is Li3N. Said Li film is fabricated by decomposing Li3N at an evaporation rate of 0.01-0.25 nm/s and an evaporation temperature of 300-450° C., and said Li film has a thickness of 0.3-5.0 nm.Type: ApplicationFiled: August 15, 2008Publication date: February 19, 2009Inventors: Yong QIU, Deqiang ZHANG, Yang LI, Guohui ZHANG, Kongwu WU, Lian DUAN, Yudi GAO
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Publication number: 20090001878Abstract: An organic electroluminescent device includes an anode, a cathode and an organic functional layer between the anode and the cathode, in which at least one of hole injection layer, hole transport layer and electron transport layer includes a host material and an inorganic inactive material doped in the host material, and the inorganic inactive material is a halide, oxide or carbonate of metal.Type: ApplicationFiled: April 3, 2008Publication date: January 1, 2009Applicants: Tsinghua University, Beijing Visionox Technology Co., Ltd., Kunshan Visionox Technology Co., Ltd.Inventors: Yong Qiu, Jing Xie, Yudi Gao, Lian Duan
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Publication number: 20080246393Abstract: The present invention relates to an organic electroluminescent display, including a substrate, a set of anodes, an organic functional layer, a set of cathodes and a packaging sheet, wherein a set of electrode leads are disposed on the packaging sheet for electrical connection with a control circuit of the display, and the electrode leads includes a set of anode leads and a set of cathode leads which are electrically connected with the corresponding anodes and cathodes on the substrate, respectively. The present invention further relates to a double-sided organic electroluminescent display having the above features.Type: ApplicationFiled: April 2, 2008Publication date: October 9, 2008Applicants: TSINGHUA UNIVERSITY, BEIJING VISIONOX TECHNOLOGY CO., LTD., KUNSHAN VISIONOX TECHNOLOGY CO., LTD.Inventors: Yong Qiu, Shenfu Zhang, Guohui Zhang, Kongwu Wu, Yudi Gao
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Publication number: 20080220286Abstract: The present invention relates to a dinaphthyl ethylene derivative of formula (I), a process for preparing it, a film prepared from it useful in the manufacure of an organic light emitting device (OLED), an OLED including the film, and the use of the dinaphthyl ethylene derivative in the manufacture of an OLED. Wherein R1 to R16 are defined as in the specification.Type: ApplicationFiled: January 30, 2008Publication date: September 11, 2008Applicants: Tsinghua University, Beijing Visionox Technology Co., LTDInventors: Yong Qiu, Han Chen, Yinkui Li
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Patent number: 7317280Abstract: An organic light-emitting device comprising a transparent substrate, an anode layer, a cathode layer, organic functional layers sandwiched between the anode layer and the cathode layer, and an encapsulation layer fabricated on one side or both sides of the device, wherein the encapsulation layer includes a thin multilayer structure and a thick organic insulation layer. The thin multilayer structure has a period number (n) of alternating layers formed of a polymer material layer and a ceramic material layer. The thick organic insulation layer is made up of polymer materials on top of the thin multilayer.Type: GrantFiled: November 24, 2003Date of Patent: January 8, 2008Assignee: Tsinghua UniversityInventors: Yong Qiu, Lian Duan, Yang Li, Liduo Wang
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Patent number: 7232616Abstract: A class of organic metal complexes with mixed ligands for organic light emitting diodes are designed and characterized as the formula:(L2L3M)n. In this formula: L2 is a bidentate ligand which has at least one coordinate atom of oxygen; L3 is a tridentate ligand with three chelate points; M is trivalent metal selected from the group consisting of Al, Ga, In, Tl, and Ir; and n is an integer of from 1 to 2. In Formula (3), X, Y independently represent CH or N and II, III are unsubstituted or substituted aryl or heteroalkyl groups. The substituent groups can be alkyl having 1–8 carbon atoms, halogen, cyano, amino, amido, sulfonyl, carbonyl, aryl, or heteroalkyl groups such as furan, thiophene, pyrrole, pyridine, etc.Type: GrantFiled: January 28, 2003Date of Patent: June 19, 2007Assignee: Tsinghua UniversityInventors: Yong Qiu, Juan Qiao
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Patent number: 7227027Abstract: The present invention relates to a series of carbazole derivatives which are used in organic electroluminescent devices as the phosphorescent host materials of the emissive layers. The carbazole derivatives have glass transition temperature of between 70° C. and 220° C. and triplet energy of 2.62 eV or more. The carbazole derivatives comprise two carbazole groups and alkyl group and/or spiro group inserted between the carbazole group and aromatic group, which is represented by formula 1. The carbazole derivatives according to the present invention are used as host materials for the triplet emissive dyes and they have high energy and stability. They can also reduce the converse energy transfer from the dye molecules to the host molecules and improve the luminance and efficiency of the OLEDs, especially the efficiency and lifetime of the blue triplet OLEDs.Type: GrantFiled: September 3, 2004Date of Patent: June 5, 2007Assignees: Tsinghua University, Beijing Visionox Technology Co., Ltd.Inventors: Yong Qiu, Juan Qiao, Jianhua Wang, Liduo Wang, Lian Duan, Gangtie Lei
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Publication number: 20060232192Abstract: The present invention relates to an organic electroluminescence device comprising a substrate, an anode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, and a cathode, wherein the electron injection layer contains alkali metal nitride and has a thickness of 0.2-10 nm. The organic electroluminescence device of the present invention has improved electron injection from the cathode to the organic layer, high device luminance and efficiency, long device lifetime, low material poisonousness, wide choice of film-forming thickness and low film-forming temperature.Type: ApplicationFiled: November 30, 2005Publication date: October 19, 2006Inventors: Yong Qiu, Yudi Gao, Deqiang Zhang, Liduo Wang
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Publication number: 20060152145Abstract: The present invention relates to an organic electroluminescence device and provides a new material composition scheme for an electron injection layer. The organic electroluminescence device of the present invention includes an electron injection layer which contains a material represented by formula AxByOz, wherein A is one of an alkali metal and an alkali earth metal, B is one of group VIII metals and 0<x?2, 0<y?3, 0<z?6. A is selected from one of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr and Ba. B is selected from one of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt. The electron injection layer can be formed of Al and AxByOz. The electron injection layer has high electron injection ability, and the device has low threshold voltage, high luminance, high efficiency and long life.Type: ApplicationFiled: July 28, 2005Publication date: July 13, 2006Inventors: Yong Qiu, Yudi Gao, Deqiang Zhang, Wang Liduo
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Patent number: 6960617Abstract: Hydrogels having improved elasticity and mechanical strength properties are obtained by subjecting a hydrogel formulation containing a strengthening agent to chemical or physical crosslinking conditions subsequent to initial gel formation. Superporous hydrogels having improved elasticity and mechanical strength properties are similarly obtained whenever the hydrogel formulation is provided with a foaming agent. Interpenetrating networks of polymer chains comprised of primary polymer(s) and strengthening polymer(s) are thereby formed. The primary polymer affords capillary-based water sorption properties while the strengthening polymer imparts significantly enhanced mechanical strength and elasticity to the hydrogel or superporous hydrogel. Suitable strengthening agents can be natural or synthetic polymers, polyelectrolytes, or neutral, hydrophilic polymers.Type: GrantFiled: April 22, 2003Date of Patent: November 1, 2005Assignee: Purdue Research FoundationInventors: Hossein Omidian, Yong Qiu, Shicheng Yang, Dukjoon Kim, Haesun Park, Kinam Park
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Publication number: 20050127826Abstract: The present invention relates to a series of carbazole derivatives which are used in organic electroluminescent devices as the phosphorescent host materials of the emissive layers. The carbazole derivatives have glass transition temperature of between 70° C. and 220° C. and triplet energy of 2.62 eV or more. The carbazole derivatives comprise two carbazole groups and alkyl group and/or spiro group inserted between the carbazole group and aromatic group, which is represented by formula 1. The carbazole derivatives according to the present invention are used as host materials for the triplet emissive dyes and they have high energy and stability. They can also reduce the converse energy transfer from the dye molecules to the host molecules and improve the luminance and efficiency of the OLEDs, especially the efficiency and lifetime of the blue triplet OLEDs.Type: ApplicationFiled: September 3, 2004Publication date: June 16, 2005Inventors: Yong Qiu, Juan Qiao, Jianhua Wang, Liduo Wang, Lian Duan, Gangtie Lei