Patents by Inventor Zhaojun Liu

Zhaojun Liu 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).

  • Publication number: 20240082966
    Abstract: A cross-coupling control method for moving beam of gantry machine tool is disclosed, which relates to the technical field of CNC machine tool control. The cross-coupling control method includes: Step 1: establishing a crossbeam dynamics model considering a ram on the crossbeam, and at the same time simplifying the model for an observer design; step 2: realizing a PID control parameter adjustment of motors at both ends in accordance with a method of parameter tuning of a unilateral servo control system; using a servo system with the same control parameters to jointly drive the crossbeam up and down, realizing the synchronous control and realizing PID control parameter tuning for both end motors. The disclosure not only reduces the synchronization error caused by the torsion of the crossbeam, but also solves the synchronization error caused by the asymmetric load on both sides, and improves the system robustness and stability.
    Type: Application
    Filed: November 14, 2023
    Publication date: March 14, 2024
    Inventors: Chuanhai Chen, Zhifeng Liu, Jinyan Guo, Tongtong Jin, Xinyuan He, Shuo Zhao, Baobao Qi, Chunshi Liu, Zhaojun Yang, Zhijie Li, Chunlei Hua, Liang Zhang, Haoming Yan
  • Publication number: 20230134241
    Abstract: The present application discloses a manufacturing method for a display module and a display screen. The method includes: forming a semiconductor device by pre-processing a semiconductor epitaxial wafer; forming a first transparent layer on a substrate surface of the semiconductor device; forming a first opening exposing the substrate by etching the first transparent layer; forming a first quantum dot layer on the substrate surface exposed by the first opening and the surface of the first transparent layer; etching away the first quantum dot layer in the outer region of the first opening, and remaining the first quantum dot layer inside the first opening; and forming a DBR film layer that filters blue light.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Applicant: SHENZHEN SITAN TECHNOLOGY CO., LTD.
    Inventors: Zhaojun LIU, Guocai WU, Weijing MO
  • Patent number: 11598676
    Abstract: Provided herein is a tungsten-rhenium composite thin film thermocouple based on a surface micropillar array with gas holes. A tungsten-rhenium thin film thermocouple is arranged on a surface of a flat alumina ceramic substrate. Two tails of the tungsten-rhenium thin film thermocouple are respectively connected to a lead wire. A surface of the tungsten-rhenium thin film thermocouple is arrayed with a plurality of micron alumina micropillars to form an alumina micropillar array. Air is filled between the micron alumina micropillars to form the gas holes. The flat alumina ceramic substrate, the tungsten-rhenium thin film thermocouple and the alumina micropillar array form a three-layered laminated structure.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: March 7, 2023
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Zhongkai Zhang, Bian Tian, Bingfei Zhang, Jiangjiang Liu, Zhaojun Liu, Libo Zhao
  • Publication number: 20220326092
    Abstract: Provided herein is a tungsten-rhenium composite thin film thermocouple based on a surface micropillar array with gas holes. A tungsten-rhenium thin film thermocouple is arranged on a surface of a flat alumina ceramic substrate. Two tails of the tungsten-rhenium thin film thermocouple are respectively connected to a lead wire. A surface of the tungsten-rhenium thin film thermocouple is arrayed with a plurality of micron alumina micropillars to form an alumina micropillar array. Air is filled between the micron alumina micropillars to form the gas holes. The flat alumina ceramic substrate, the tungsten-rhenium thin film thermocouple and the alumina micropillar array form a three-layered laminated structure.
    Type: Application
    Filed: June 23, 2022
    Publication date: October 13, 2022
    Inventors: Zhongkai ZHANG, Bian TIAN, Bingfei ZHANG, Jiangjiang LIU, Zhaojun LIU, Libo ZHAO
  • Publication number: 20220275454
    Abstract: Provided are a set of primer pair and probe, having the oligonucleotide sequences as shown in SEQ ID NO: 1, SEQ ID NO: 2 and SEQ ID NO: 3, and a set of primer pair and probe of reference sequence, having the oligonucleotide sequences as shown in SEQ ID NO: 4, SEQ ID NO: 5 and SEQ ID NO: 6. Further provided is the use of the set of primer pair and probe for detecting the common deleted region “chr9:21970277-21985225,hg19”, of CDKN2A in the preparation of a kit for quantitatively detecting the deletion of a human CDKN2A gene copy in a DNA sample to be tested. The new method and the specific primer pair and probe can simply, conveniently and specifically detect the deletion of the CDKN2A gene copy in the sample, and have higher sensitivity than conventional detection methods for copy deletion.
    Type: Application
    Filed: May 19, 2019
    Publication date: September 1, 2022
    Inventors: Dajun DENG, Yuan TIAN, Jing ZHOU, Zhaojun LIU
  • Publication number: 20220245862
    Abstract: An image processing method and device, a camera apparatus and a storage medium are provided. The image processing method includes: acquiring an initial image, and the initial image corresponds to an RGB data format; dividing the initial image into a plurality of image blocks; converting each image block in the plurality of image blocks from the RGB data format into a YUV data format, wherein Y is a luminance value, and U and V are chromatic value; inverting a luminance value Y of a target image block into a darkness value D, and the target image block is at least one of the plurality of image blocks; coding DUV data of the target image block and YUV data of a non-inverted image block so as to obtain target image data of the initial image.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 4, 2022
    Inventors: Zhaojun LIU, Hu Mengyuan ZHANG, Weijing MO
  • Patent number: 11171276
    Abstract: A thin-film thermocouple probe includes a columnar substrate, a tungsten-26% rhenium film and an indium oxide (In2O3) film. A side surface of the columnar substrate is provided with a first straight groove and a second straight groove. The tungsten-26% rhenium film is arranged on a front end surface of the columnar substrate and in the first straight groove. The indium oxide film is arranged on the front end surface of the columnar substrate and in the second straight groove. The indium oxide film on the front end surface of the columnar substrate is connected to the tungsten-26% rhenium film on the front end surface of the columnar substrate. A first metal lead wire is connected to the tungsten-26% rhenium film, and a second metal lead wire is connected to the indium oxide film. A method of preparing the thin-film thermocouple probe is provided.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: November 9, 2021
    Assignee: Xi'an Jiaotong University
    Inventors: Bian Tian, Zhongkai Zhang, Yan Liu, Zhaojun Liu, Jiangjiang Liu, Cunfeng Wang, Peng Shi, Qijing Lin, Zhuangde Jiang
  • Publication number: 20210234081
    Abstract: A thin-film thermocouple probe includes a columnar substrate, a tungsten-26% rhenium film and an indium oxide (In2O3) film. A side surface of the columnar substrate is provided with a first straight groove and a second straight groove. The tungsten-26% rhenium film is arranged on a front end surface of the columnar substrate and in the first straight groove. The indium oxide film is arranged on the front end surface of the columnar substrate and in the second straight groove. The indium oxide film on the front end surface of the columnar substrate is connected to the tungsten-26% rhenium film on the front end surface of the columnar substrate. A first metal lead wire is connected to the tungsten-26% rhenium film, and a second metal lead wire is connected to the indium oxide film. A method of preparing the thin-film thermocouple probe is provided.
    Type: Application
    Filed: December 10, 2020
    Publication date: July 29, 2021
    Inventors: Bian TIAN, Zhongkai ZHANG, Yan LIU, Zhaojun LIU, Jiangjiang LIU, Cunfeng WANG, Peng SHI, Qijing LIN, Zhuangde JIANG
  • Patent number: 10229630
    Abstract: A passive-matrix light-emitting diodes on silicon (LEDoS) micro-display is presented herein. The LEDoS micro-display comprises a passive-matrix micro-light-emitting diode (LED) array comprising passive-matrix micro-light-emitting diodes (LEDs), and a display driver configured to apply column signals to columns of LED pixels of the passive-matrix micro-LED array and scan signals to rows of the LED pixels, wherein the passive-matrix micro-LED array is flip-chip bonded to the display driver based on solder bumps located at peripheral areas of the passive-matrix micro-LED array.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: March 12, 2019
    Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kei May Lau, Zhaojun Liu, Wing Cheung Chong, Wai Keung Cho, Chu Hong Wang
  • Patent number: 10214778
    Abstract: Provided in the present invention are a method using in vitro measurement of the content of methylation or demethylation of GFRa1 CpG islands to estimate a risk of tumorigenesis and of tumor metastasis, or postoperative life expectancy, and a nucleotide sequence used.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: February 26, 2019
    Assignee: Beijing Institute For Cancer Research
    Inventors: Dajun Deng, Jun Zhang, Zhaojun Liu, Jing Zhou, Liankun Gu, Baozhen Zhang
  • Publication number: 20170204471
    Abstract: Provided in the present invention are a method using in vitro measurement of the content of methylation or demethylation of GFRa1 CpG islands to estimate a risk of tumorigenesis and of tumor metastasis, or postoperative life expectancy, and a nucleotide sequence used.
    Type: Application
    Filed: February 21, 2017
    Publication date: July 20, 2017
    Inventors: Dajun Deng, Jun Zhang, Zhaojun Liu, Jing Zhou, Liankun Gu, Baozhen Zhang
  • Patent number: 9637797
    Abstract: Provided in the present invention are a method using in vitro measurement of the content of methylation or demethylation of GFRa1 CpG islands to estimate a risk of tumorigenesis and of tumor metastasis, or postoperative life expectancy, and a nucleotide sequence used.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: May 2, 2017
    Assignee: Beijing Institute For Cancer Research
    Inventors: Dajun Deng, Jun Zhang, Zhaojun Liu, Jing Zhou, Liankun Gu, Baozhen Zhang
  • Patent number: 9424775
    Abstract: Image projection utilizing light-emitting diodes on a silicon (LEDoS) substrate is described herein. LEDoS devices selectively activate LED pixels to produce light. Light can excite color conversion materials of the LEDoS devices to form color images. Images can be projected onto a projection surface.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: August 23, 2016
    Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kei May Lau, Chik Yue, Zhaojun Liu
  • Patent number: 9349911
    Abstract: A high-resolution, Active Matrix (AM) programmed monolithic Light Emitting Diode (LED) micro-array is fabricated using flip-chip technology. The fabrication process includes fabrications of an LED micro-array and an AM panel, and combining the resulting LED micro-array and AM panel using the flip-chip technology. The LED micro-array is grown and fabricated on a sapphire substrate and the AM panel can be fabricated using CMOS process. LED pixels in a same row share a common N-bus line that is connected to the ground of AM panel while p-electrodes of the LED pixels are electrically separated such that each p-electrode is independently connected to an output of drive circuits mounted on the AM panel. The LED micro-array is flip-chip bonded to the AM panel so that the AM panel controls the LED pixels individually and the LED pixels exhibit excellent emission uniformity. According to this constitution, incompatibility between the LED process and the CMOS process can be eliminated.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 24, 2016
    Assignee: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Kei May Lau, Chi Wing Keung, Zhaojun Liu
  • Publication number: 20160053948
    Abstract: A light emitting diode (“LED”) lighting apparatus has several components for providing lighting including a boost circuit for driving a plurality of LED strips. The boost circuit is used to boost an input voltage to a predefined voltage, where the predefined voltage is greater than the input voltage. Each of the LED strips has a set of serially-connected LEDs coupled to a transparent backing. The sets of LEDs are serially connected to each other. The predefined voltage is applied to the strips via the serial connection to drive the LEDs of the strips.
    Type: Application
    Filed: August 20, 2014
    Publication date: February 25, 2016
    Inventors: James Wang, Kei May Lau, Parco Wang, Terence Cho, Zhaojun Liu, Eddie Chong
  • Publication number: 20160057819
    Abstract: A light emitting diode (“LED”) lighting system comprises an LED lighting fixture having LEDs, a network interface cable, and one or more controllers. The network interface cable has multiple pairs of wires. A certain one of the one or more LED controllers is connected to the LED lighting fixture via the network interface cable. The certain one of the one or more LED controllers powers the LED lighting fixture via the network interface cable.
    Type: Application
    Filed: August 25, 2014
    Publication date: February 25, 2016
    Inventors: James Wang, Kei May Lau, Parco Wong, Terence Cho, Zhaojun Liu, Eddie Chong
  • Publication number: 20160040243
    Abstract: Provided in the present invention are a method using in vitro measurement of the content of methylation or demethylation of GFRal CpG islands to estimate a risk of tumorigenesis and of tumor metastasis, or postoperative life expectancy, and a nucleotide sequence used.
    Type: Application
    Filed: February 13, 2012
    Publication date: February 11, 2016
    Applicant: Beijing Institute For Cancer Research
    Inventors: Dajun Deng, Jun Zhang, Zhaojun Liu, Jing Zhou, Liankun Gu, Baozhen Zhang
  • Patent number: 9239160
    Abstract: A light emitting diode (“LED”) lighting apparatus has vents to cool the LED lighting apparatus. The LED lighting apparatus comprises one or more strips, a base having vents, and one or more glass tubes. Each strip has LEDs and a transparent backing. The vents comprise a central vent and side vents, were the central vent and certain ones of the side vents are connected to allow for gas flow. The one or more strips and the one or more glass tubes are coupled to the base, where the one or more glass tubes encapsulate the one or more strips. The central vent is disposed adjacent to the one or more glass tubes, and a heat transfer medium within selected ones of the one or more glass tubes flows out of the selected ones of the one or more glass tubes for cooling.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: January 19, 2016
    Assignee: CLEDOS GREEN TECH LIMITED
    Inventors: James Wang, Kei May Lau, Parco Wang, Terence Cho, Zhaojun Liu, Eddie Chong
  • Patent number: 9239156
    Abstract: Structures for LED light bulbs comprise a driver board and a lighting structure having one or more LEDs disposed thereon. The driver board, in a Y shape, can be the circuit board and has a positive terminal and a negative terminal for receiving electrical power. The Y-shaped driver board having two prongs connects to the light structure to power the LEDs thereon. The lighting structure can be in the form of a grid having the LEDs disposed thereon.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: January 19, 2016
    Assignee: CLEDOS GREEN TECH LIMITED
    Inventors: James Wang, Kei May Lau, Parco Wang, Wei Xiong Liao, Terence Cho, Zhaojun Liu, Eddie Chong
  • Publication number: 20150332635
    Abstract: A passive-matrix light-emitting diodes on silicon (LEDoS) micro-display is presented herein. The LEDoS micro-display comprises a passive-matrix micro-light-emitting diode (LED) array comprising passive-matrix micro-light-emitting diodes (LEDs), and a display driver configured to apply column signals to columns of LED pixels of the passive-matrix micro-LED array and scan signals to rows of the LED pixels, wherein the passive-matrix micro-LED array is flip-chip bonded to the display driver based on solder bumps located at peripheral areas of the passive-matrix micro-LED array.
    Type: Application
    Filed: May 13, 2015
    Publication date: November 19, 2015
    Inventors: Kei May Lau, Zhaojun Liu, Wing Cheung Chong, Wai Keung Cho, Chu Hong Wang