公开(公告)号：US20210272802A1

公开(公告)日：2021-09-02

申请号：US17254102

申请日：2018-12-19

Applicant: South China Normal University

Inventor： Richard Notzel ,  Peng Wang ,  Stefano Sanguinetti ,  Guofu Zhou

IPC: H01L21/02

Abstract: Provided is a nanowire array, in which a plurality of nanowires are densely packed and in contact with each other via side walls to form a three-dimensional, compact layer structure, wherein the plurality of nanowires are formed from InGaN-based material. Also provided is an optoelectronic device comprising the nanowire array which is epitaxially grown on a surface of a substrate (12). Further provided are methods for preparing the nanowire array and the optoelectronic device.

公开(公告)号：US11079631B2

公开(公告)日：2021-08-03

申请号：US16495787

申请日：2018-05-04

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd.

Inventor： Guofu Zhou ,  Laurens De Haan ,  Pei Zhang ,  Wei Zhao

IPC: G02F1/1337 ,  C09K19/20 ,  C09K19/38 ,  C09D5/33 ,  C09K19/04

Abstract: A preparation method for a temperature-responsive light reflecting coating is provided comprising: forming a main chain cholesteric phase liquid crystal polymer by a polymerization reaction between an acrylate liquid crystal and an amine, and coating the main chain cholesteric phase liquid crystal polymer on a substrate to form a light reflecting coating, wherein the acrylate comprises a chiral acrylate, and the reflection wavelength of the reflecting coating is determined by the content of the chiral acrylate liquid crystal and the polymerization degree of the main chain cholesteric phase liquid crystal polymer formed. The method may further comprise cross-linking the main chain cholesteric phase liquid crystal polymer to obtain a polymer network so as to form a solid coating. The present disclosure further provides a temperature-responsive light reflecting coating. The preparation of the main chain cholesteric phase liquid crystal polymer of the present disclosure requires only a simple thermally-driven polymerization reaction.

公开(公告)号：US10942402B2

公开(公告)日：2021-03-09

申请号：US16483804

申请日：2017-11-08

Applicant: SOUTH CHINA NORMAL UNIVERSITY ,  SHENZHEN GUOHUA OPTOELECTRONICS CO., LTD. ,  ACADEMY OF SHENZHEN GUOHUA OPTOELECTRONICS

Inventor： Guofu Zhou ,  Xiaowen Hu ,  Nan Li

IPC: G02F1/1334 ,  G02F1/1347 ,  G02F1/1337 ,  G02F1/137 ,  G02F1/1339

Abstract: An electric response infrared reflection device and a preparation method thereof. The device comprises three light-transmitting conductive substrates which are oppositely arranged. Two adjacent light-transmitting conductive substrates of the three light-transmitting conductive substrates are respectively packaged to form a first adjusting area and a second adjusting area. Both the first adjusting area and the second adjusting area are filled with liquid crystal layers. Each of the liquid crystal layers comprises a mixed liquid crystal material. The mixed liquid crystal material comprises a chiral nematic phase liquid crystal, a monomer, a photoinitiator, and a chiral dopant. The spiral direction of the chiral nematic phase liquid crystal in the first adjusting area is opposite to the spiral direction of the chiral nematic phase liquid crystal in the second adjusting area, so that the total reflection of an infrared band can be implemented.

公开(公告)号：US10901278B2

公开(公告)日：2021-01-26

申请号：US16498740

申请日：2018-10-10

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu Zhou ,  Xiaowen Hu ,  Wei Zhao ,  Haitao Sun ,  Wenmin Yang ,  Lingling Shui

IPC: G02F1/1347 ,  G02F1/1334 ,  G02F1/137

Abstract: The present disclosure discloses an electroresponsive liquid crystal dimming device comprising a first light transmitting conductive substrate, a first polymer network stabilized liquid crystal layer, a positive liquid crystal layer, a second polymer network stabilized liquid crystal layer and a second light transmitting conductive substrate which are arranged in sequence; and the first polymer network stabilized liquid crystal layer and the second polymer network stabilized liquid crystal layer reflect the circularly polarized light having the same polarization direction. The conversion of the positive liquid crystals in each layer between different states is driven by changing the magnitude of the access voltage of the liquid crystal dimming device according to the present disclosure, thereby realizing the adjustment of blurring to transparent states and color to colorless states of the liquid crystal dimming device, having a good application prospect in the window glass, and home glass window, and the like.

公开(公告)号：US20200333514A1

公开(公告)日：2020-10-22

申请号：US16498760

申请日：2018-10-10

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu ZHOU ,  Xiaowen HU ,  Wei ZHAO ,  Qiumei NIE ,  Weijie ZENG ,  Haitao SUN

IPC: G02B5/08 ,  G02B5/00

Abstract: Disclosed are a laser protective film and a laser protective device comprising the same. The laser protective film comprises, stackingly disposed: a first liquid crystal polymer layer for reflecting left-hand polarized light, a second liquid crystal polymer layer for reflecting right-hand polarized light, and a third liquid crystal polymer layer for absorbing incident laser. In the above way, the laser protective film of the present disclosure has a large angle of protection, high flexibility. In addition, it is easy to find any damage to the laser protective film of the present disclosure. Moreover, it can make modification to existing equipment. Thus, the present disclosure has a good application prospect in many fields such as laser goggles, window glass and the like.

公开(公告)号：US20200069724A1

公开(公告)日：2020-03-05

申请号：US16435677

申请日：2019-06-10

Applicant: South China Normal University

Inventor： Ruqiang Huang ,  Jinghui Wang ,  Qian Wang ,  Linlin Gao ,  Jingwen Zhang

IPC: A61K31/715 ,  A61P3/06 ,  C08B37/00

Abstract: The invention discloses a myrtle polysaccharide P1, the separation method thereof and the use in preparing hypolipidemic drugs therefor, wherein the P1 contains 6.74% of ribose, 1.73% of rhamnose, 60.06% of arabinose, 3.54% of xylose, 5.64% of mannose, 13.16% of glucose, and 9.13% of galactose. The experiment result shows that the myrtle polysaccharide P1 has a certain ability to bind cholate in vitro. Taking cholestyramine as a positive control and the binding rate of cholestyramine to each cholate as 100%, the relative binding rate of the myrtle polysaccharide P1 to sodium taurocholate, sodium glycocholate and sodium cholate was 25.28%, 44.56%, and 50.10%, respectively.

公开(公告)号：US20200057322A1

公开(公告)日：2020-02-20

申请号：US16486225

申请日：2017-11-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu ZHOU ,  Xiaowen HU ,  Nan LI

IPC: G02F1/137 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/1334 ,  E06B9/24

Abstract: An infrared reflection device includes a power supply assembly, a plurality of switches, and two relatively disposed light-transmitting conductive substrates packaging a regulating area. Each of the light-transmitting conductive substrates comprise a light-transmitting substrate and an electrode layer. The regulating area is filled with a liquid crystal mixture; the electrode layers are arranged on opposite surfaces of the two light-transmitting substrates; the electrode layer of at least one of the light-transmitting conductive substrates comprises at least two mutually independent electrode areas; and electrode areas of the same light-transmitting conductive substrate, after being respectively connected in series to the switches, are jointly connected in parallel to the same electrode of the power supply assembly.

公开(公告)号：US20200011827A1

公开(公告)日：2020-01-09

申请号：US16491122

申请日：2017-12-12

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu ZHOU ,  Rui ZHOU ,  Jun LI ,  Qianling YE ,  Nicolaas De ROOIJ

IPC: G01N27/22

Abstract: A capacitive sensor and a preparation method thereof are disclosed. By disposing differential positive-negative electrode pair that include a first positive-negative electrode pair (4, 5, 6) and a second positive-negative electrode pair (11, 12, 13), and disposing a functional material layer (7, 8, 9) on the first positive-negative electrode pair (4, 5, 6), differential measurement is achieved, and thus the accuracy and sensitivity of the capacitive sensor are improved.

公开(公告)号：US10237933B2

公开(公告)日：2019-03-19

申请号：US15490065

申请日：2017-04-18

Applicant: South China Normal University

Inventor： Huiqing Sun ,  Xian Yang ,  Zhiyou Guo ,  Yong Huang ,  Hongyong Huang ,  Jie Sun ,  Jing Huang ,  Zhuding Zhang ,  Yang Liu

IPC: H05B33/08 ,  H01L27/15 ,  H01L33/08 ,  H01L33/32 ,  H01L49/02 ,  H01L33/00 ,  H01L33/38 ,  H01L33/06 ,  H01L33/12 ,  H01L33/42 ,  H04B10/50 ,  H01L33/62 ,  H01L33/44 ,  H04B10/116 ,  H01L33/20

Abstract: A visible light communication LED having a spiral inductance coil and a circular core is provided, comprising a sapphire substrate provided with a positive electrode welding spot and a negative electrode welding spot, and a plurality of LED cores deposited on the sapphire substrate. The negative electrode of a former core is connected with the positive electrode of a latter core, and the positive electrode of the first core and the negative electrode of the last core are respectively connected to the positive electrode welding spot and the negative electrode welding spot on the substrate. According to the present invention, each of the LED cores is surrounded by a spiral inductance coil, and a pin of one end of the spiral inductance coil is connected via a connecting wire with the negative electrode of an adjacent LED core, while the other end is directly connected with the positive electrode of the LED core that is surrounded by the spiral inductance coil.

公开(公告)号：US20180286318A1

公开(公告)日：2018-10-04

申请号：US15764228

申请日：2016-04-13

Applicant: Shenzhen Guohua Optoelectronics Co. Ltd ,  South China Normal University ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Zichuan Yi ,  Li Wang ,  Guofu Zhou

IPC: G09G3/34

CPC classification number: G09G3/344 ,  G09G2310/06 ,  G09G2310/063 ,  G09G2310/065 ,  G09G2310/068 ,  G09G2320/0204 ,  G09G2320/0257

Abstract: A driving method for reducing a ghosting in an electrophoretic display is provided without prolonging driving waveform time and scintillation by improving a driving waveform design. The method comprises four steps: erasing an original image (S1); activating activity of electrophoretic particle (S2); activating electrophoretic particle (S3); and writing a new image (S4). At the electrophoretic particle activating (S3) stage, the electrophoretic particle activating is carried out for a preset duration time (tx), wherein the voltage of the driving waveform is 0V within the preset duration time (tx).