公开(公告)号：US20240363793A1

公开(公告)日：2024-10-31

申请号：US18769413

申请日：2024-07-11

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Yanhui CHEN ,  Li MA ,  Hao ZHANG ,  Jintao CHEN ,  Maoxiang HOU ,  Xin CHEN

IPC: H01L33/00

CPC classification number: H01L33/005

Abstract: An ejector pin sliding on membrane-based device and method for mass transfer of mini light-emitting diodes (Mini-LEDs) are provided. The device includes a gantry transverse beam. The gantry transverse beam is provided with an ejector pin base, and the ejector pin base is configured to move along the gantry transverse beam. The ejector pin base is fixedly provided with a vision camera and an ejector pin. A blue membrane is horizontally provided at a side of the gantry transverse beam close to the ejector pin, and is spaced from the gantry beam. A surface of a side of the blue membrane away from the gantry transverse beam is adhesively provided with a plurality of Mini-LED chips arranged evenly. A transfer substrate is horizontally provided at a side of the blue membrane close to the plurality of Mini-LED chips, and is spaced from the blue membrane.

公开(公告)号：US20240159521A1

公开(公告)日：2024-05-16

申请号：US18423054

申请日：2024-01-25

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Jian GAO ,  Yizhong ZHUANG ,  Lanyu ZHANG ,  Haixiang DENG ,  Yun CHEN ,  Xin CHEN

IPC: G01B11/25 ,  G06T7/73 ,  G06T7/80 ,  G06T17/00 ,  H04N13/239

CPC classification number: G01B11/2545 ,  G06T7/75 ,  G06T7/85 ,  G06T17/00 ,  H04N13/239 ,  G06T2207/10012 ,  G06T2207/10028 ,  G06T2207/30204 ,  G06T2210/56

Abstract: A three-dimensional measurement method combines the three-step phase shift method to embed the marker line information into the sinusoidal stripe pattern to obtain the target stripe pattern. The target stripe pattern is projected onto the surface of the object to be measured, and the wrapped phase image, mean intensity image and modulated intensity image of the stripe pattern collected by the left and right cameras are solved. The mask image according to the mean intensity image and modulation intensity image is solved to extract the marker line. The spatial phase unwrapping starting from the marker line in the wrapped phase image is performed to obtain the spatial phase. The spatial phase matching based on the unique correspondence between the left and right cameras based on the spatial phase of the marker line is performed, the best matching point of the right camera is obtained.

公开(公告)号：US20230390746A1

公开(公告)日：2023-12-07

申请号：US18339190

申请日：2023-08-17

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Shengbao LAI ,  Biao LI ,  Zuohui LIU ,  Guanhai WEN ,  Maoxiang HOU ,  Xin CHEN

IPC: B01J27/224 ,  B01J21/18 ,  B01J6/00 ,  B01J37/06 ,  B01J37/08 ,  B01J37/04 ,  B01J35/00 ,  C01B3/04

CPC classification number: B01J27/224 ,  B01J21/18 ,  B01J6/001 ,  B01J37/06 ,  B01J37/08 ,  B01J37/04 ,  B01J35/004 ,  C01B3/045

Abstract: This application discloses a silicon carbide (SiC)-loaded graphene photocatalyst for hydrogen production under visible light irradiation and a preparation method thereof. Pure SiC and pure black carbon are respectively prepared and mixed to obtain a mixture with a resistance less than 100Ω. Then the mixture was vacuumized and processed with a current pulse with an increasing voltage until a breakdown occurs, and subjected to ultrasonic stirring, centrifugal washing and vacuum drying in turn to obtain the SiC-loaded graphene photocatalyst. By means of the current pulse, a heterojunction is formed between SiC and graphene to improve the catalytic activity of the photocatalyst; and the photocatalytic hydrogen production rate of SiC nanoparticles can be enhanced after loaded on the graphene.

公开(公告)号：US20230364657A1

公开(公告)日：2023-11-16

申请号：US18359139

申请日：2023-07-26

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Biao LI ,  Aoke SONG ,  Shankun DONG ,  Shengbao LAI ,  Maoxiang HOU ,  Xin CHEN

IPC: B08B7/02 ,  B06B1/06

CPC classification number: B08B7/028 ,  B06B1/0688 ,  B06B2201/56 ,  B06B2201/71 ,  G03F7/405

Abstract: A method of fabricating a film vibration device, including: photoetching a surface of a silicon wafer to form a circular-hole array; etching an aluminum layer on the silicon wafer; etching the silicon wafer to form a through-hole array to obtain a porous silicon wafer; attaching a polyethylene terephthalate (PET) sheet to a side of the porous silicon wafer; ablating the PET sheet to obtain a porous PET film; attaching a polyvinylidene fluoride (PVDF) film to a lower side of the porous silicon wafer; performing vacuumization above the porous silicon wafer, while heating the PVDF film below the porous silicon wafer to create dome micro-structures on the PVDF film; and laminating the porous PET film on each of two sides of the PVDF film to obtain the film vibration device. This application also provides a cleaning device having the film vibration device.

公开(公告)号：US20210219476A1

公开(公告)日：2021-07-15

申请号：US17218367

申请日：2021-03-31

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Xin CHEN ,  Yunbo HE ,  Xiquan MAI ,  Chengqiang CUI ,  Qiang LIU ,  Jian GAO ,  Zhijun YANG ,  Xun CHEN ,  Yun CHEN ,  Kai ZHANG ,  Hui TANG ,  Yu ZHANG

IPC: H05K13/04 ,  H01L33/00 ,  H01L33/62

Abstract: A variable pitch electronic component mass transfer apparatus is disclosed. A die-bond transfer head is disposed below each of the die-bond brackets. The die-bond connecting rod is provided with die-bond movable nodes arranged equidistantly. Each of the die-bond movable node is hinged to one of the die-bond brackets. An output end of the die-bond linear motor drives the die-bond connecting rod to move telescopically. A flip-chip transfer head is disposed below each of the flip-chip brackets. The flip-chip connecting rod is provided with flip-chip movable nodes arranged equidistantly. Each of the flip-chip movable nodes is hinged to one of the flip-chip brackets. An output end of the flip-chip linear motor drives the flip-chip connecting rod to move telescopically. An output end of the connecting rod rotating motor is connected to the flip-chip rail, and is configured to turn over the flip-chip rail.

公开(公告)号：US20200249663A1

公开(公告)日：2020-08-06

申请号：US16820638

申请日：2020-03-16

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Qiang LIU ,  Jiewu LENG ,  Ding ZHANG ,  Xin CHEN ,  Lijun WEI

IPC: G05B19/418

Abstract: The present invention relates to the technical field of industrial automation, and in particular to a method and system for quick customized-design of an intelligent workshop. The method comprises the following steps: step A: acquiring design requirement information of a production line, and performing modeling in a simulation system according to the design requirement information; step B: performing action planning of a physical stand-alone device, performing logistics and motion planning of articles being processed, and compiling motion and action control scripts; step C: establishing, by the digital twin technology, a communication channel among a PLC system of the workshop digitization model, a PLC system of a physical workshop device and a host computer; and, step D: outputting a three-dimensional digital twin model as a blueprint for follow-up design and development of the stand-alone device, a control system and an execution system.

公开(公告)号：US20190238269A1

公开(公告)日：2019-08-01

申请号：US16333245

申请日：2018-03-14

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Han WANG ,  Fangjian ZHANG ,  Xin CHEN ,  Xindu CHEN ,  Nian CAI ,  Yunbo HE ,  Yixiang ZHAO ,  Canran LIN ,  Zhengyi XIN

IPC: H04L1/00 ,  G06F13/42

Abstract: There are provided a method and an interface system for Bidirectional Synchronous Serial (BISS) protocol data decoding. The method includes: an MA drive module receiving an enable signal en and transmitting an MA clock signal to an SL receiving module, and then the SL receiving module detecting a trigger signal of SL; when a start bit of the SL is detected by the SL receiving module, the SL receiving module reading SL data; after the SL data is read, the SL receiving module transmitting a done signal to the MA drive module to stop operation of the MA drive module and transmitting a did signal to a CRC check module; and after the did signal is received by the CRC check module, the CRC check module performing CRC check on the SL data and outputting a correct position value after the check is completed.

公开(公告)号：US20230357016A1

公开(公告)日：2023-11-09

申请号：US18146378

申请日：2022-12-25

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Huilong LIU ,  Yun CHEN ,  Xin CHEN ,  Yixin ZHENG ,  Kyoung-Sik MOON ,  Dachuang SHI ,  Jian GAO ,  Ching-Ping WONG

IPC: C01B32/184 ,  C01B32/196

CPC classification number: C01B32/184 ,  C01B32/196 ,  C01P2004/04 ,  C01P2002/82 ,  C01P2002/85

Abstract: A method for integrally forming a graphene film (GF) of a high specific surface area (SSA) by ultrafast ultraviolet (UV) laser processing, includes: selecting a carbon precursor material, where the carbon precursor material is one selected from the group consisting of a biomass/hydrogel composite and a heavy hydrocarbon compound; adding an activator solution to an inside of the carbon precursor material to obtain a composite with an activator uniformly loaded, and spreading the composite on a flexible substrate to form a carbon precursor material layer; heating and drying the carbon precursor material layer; in-situ processing with an ultrafast UV laser to obtain an activated GF of a high SSA; and cleaning and drying the activated GF. With the method of the present disclosure, a microporous activated GF of a high SSA can be directly processed in-situ on a flexible substrate.

公开(公告)号：US20230268205A1

公开(公告)日：2023-08-24

申请号：US18062025

申请日：2022-12-06

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Xin CHEN ,  Zhihang LIN ,  Hui TANG ,  Hongcheng LI ,  Jian GAO ,  Qiang LIU ,  Xun CHEN

IPC: H01L21/67 ,  H01L33/00

CPC classification number: H01L21/67144 ,  H01L33/0093

Abstract: A flexure-based continuous ejector pin mechanism for Mini/Micro chip mass transfer includes a first drive frame, a second drive frame, a mounting base, a first thorn die attach drive device, a second thorn die attach drive device, first flexible hinges, second flexible hinges, and a pricking pin. The second drive frame and the first drive frame are connected through the first flexible hinge. The mounting base is connected to a left side and a right side of the second drive frame through the second flexible hinges. Compared with a laser transfer technology, the flexible movable thorn die attach device has lower cost and higher accuracy; compared with a vacuum nozzle transfer technology, the flexible movable thorn die attach device has higher transfer efficiency and quality; and compared with a conventional thorn die attach device, the flexible movable thorn die attach device has higher transfer efficiency and precision.

公开(公告)号：US20230235810A1

公开(公告)日：2023-07-27

申请号：US18154533

申请日：2023-01-13

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Lanyu ZHANG ,  Jian GAO ,  Shaoxuan ZHANG ,  Yun CHEN ,  Xin CHEN ,  Kai ZHANG

IPC: F16F15/00 ,  F16F15/02

CPC classification number: F16F15/002 ,  F16F15/02 ,  F16F2222/04 ,  F16F2228/066 ,  F16F2230/18

Abstract: A rapid active vibration reduction method for a high-speed motion stage includes acquiring motion parameters of a motion body of the motion stage in current motion; determining a vibration reduction mode of a vibration reduction device according to the motion parameters; and controlling an action end of the vibration reduction device to contact with the motion body of the motion stage or contact with a driving device for driving the motion body to move based on the vibration reduction mode, so that a contact friction force used for suppressing vibration of the motion body is generated. Realizing vibration reduction by means of active friction can reduce vibration of the motion body in a specific stage needing vibration reduction, and the action end of the vibration reduction device does not need to contact with the motion body or does not need to contact with the driving device before vibration reduction.