公开(公告)号：US11168256B2

公开(公告)日：2021-11-09

申请号：US16604371

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 ,  Weijie Zeng ,  Chun Ju ,  Lingling Shui

IPC: C09K19/40 ,  C09K19/58 ,  C09K19/52 ,  G02F1/13 ,  C07C53/126

Abstract: A liquid crystal mixture and a temperature-responsive infrared reflection device made by using the liquid crystal mixture containing potassium laurate. Infrared light can pass through the device within a non-working temperature range, and a chiral dopant enables potassium laurate to form a cholesteric phase within a working temperature range. The birefringence value of the potassium laurate gradually increases with the increase of temperature between 12.5° C. and 26° C., so that the infrared reflection bandwidth of the device constantly increases. The birefringence value of the potassium laurate gradually decreases with the increase of temperature between 26° C. and 54.5° C., so that the infrared reflection bandwidth of the device constantly decreases. The infrared reflection bandwidth of the infrared reflection device can vary with temperature by adjusting the proportions of the ingredients of the liquid crystal mixture containing potassium laurate.

公开(公告)号：US10310354B2

公开(公告)日：2019-06-04

申请号：US15752867

申请日：2016-01-07

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

Inventor： Guofu Zhou ,  Hao Wu ,  Fahong Li ,  Robert Andrew Hayes

IPC: G09F9/37 ,  G09G3/34 ,  G02B26/00 ,  G02F1/167

Abstract: Disclosed is an electrofluidic support plate and a method for preparing the same, and an electrofluidic device comprising the support plate. The method comprises the following steps of: providing a substrate which has a surface provided with an electrode layer; arranging a first amorphous fluoropolymer layer on the surface of the substrate, and carrying out hydrophilic modification on a surface of the amorphous fluoropolymer layer; arranging pixel walls on the amorphous fluoropolymer layer after hydrophilic modification; arranging a second amorphous fluoropolymer layer which is a hydrophobic layer; the second amorphous fluoropolymer layer covering all surfaces of the pixel walls and a groove area encircled by the pixel walls; filling the groove area encircled by the pixel walls with a protective material; removing the second amorphous fluoropolymer layer not covered by the protective material and on a top of the pixel walls; and removing the protective material.

公开(公告)号：US20170045650A1

公开(公告)日：2017-02-16

申请号：US15305642

申请日：2014-04-22

Applicant: SHENZHEN GUOHUA OPTOELECTRONICS CO., LTD. ,  South China Normal University ,  Shenzhen Guohua Optoelectronics Institute

Inventor： Guofu Zhou ,  Robert Andrew Hayes ,  Jan Groenewold

IPC: G02B5/02 ,  G02B1/04 ,  G02B5/08 ,  G02B26/00

CPC classification number: G02B5/0284 ,  G02B1/04 ,  G02B5/02 ,  G02B5/0816 ,  G02B26/00 ,  G02B26/005

Abstract: A display structure having a high-brightness diffuse reflector, an electrowetting display structure based on the display structure, an in-cell type electrowetting display structure and a manufacturing method thereof are disclosed. The display structure comprises panel glass (1), a display layer (2) and substrate glass (3), wherein a high-brightness diffuse reflection polymer thin film material (4) is arranged under the substrate glass (3); the panel glass (1), the display layer (2), the substrate glass (3) and the diffuse reflection polymer thin film material (4) are stacked in sequence. According to the display structure and manufacturing method thereof of the invention, the required diffuse reflection and contrast ratio approximate to paper can be provided by placing a high-brightness diffuse reflection polymer thin film under a substrate or a display layer of a plate display structure as a diffuse reflection layer or a diffuse reflector.

Abstract translation: 公开了一种具有高亮度漫反射器，基于显示结构的电润湿显示结构，电池内电润湿显示结构及其制造方法的显示结构。 显示结构包括面板玻璃（1），显示层（2）和基板玻璃（3），其中在基板玻璃（3）下面布置有高亮度漫反射聚合物薄膜材料（4）; 面板玻璃（1），显示层（2），基板玻璃（3）和漫反射聚合物薄膜材料（4）依次层叠。 根据本发明的显示结构及其制造方法，可以通过将高亮度漫反射聚合物薄膜放置在基板或板显示结构的显示层上来提供所需的与纸张相近的漫反射和对比度，如 漫反射层或漫反射器。

公开(公告)号：US11579477B2

公开(公告)日：2023-02-14

申请号：US16491086

申请日：2017-11-15

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

Inventor： Guofu Zhou ,  Hao Li ,  Nan Li

IPC: G02F1/1333 ,  G02F1/166 ,  G02B26/02 ,  G02F1/167 ,  C09K19/38 ,  G02F1/1675 ,  C09K19/04

Abstract: An electrically controlled smart window, which includes two transparent plates arranged oppositely, a power supply component and an in-between light-adjusting area. Hereinto the light-adjusting area is divided into a matrix of light-adjusting units by pixel wall(s), and every units are closely arranged in a grid shape. To the power supply component, an electrode is connected with the pixel wall, and another is localized on the center of light-adjusting unit and did with the transparent plate. Both surface-charged liquid crystal polymer particles and conductive packing fluid are filled into the medium between the two transparent plates. According to the present disclosure, cholesteric liquid crystal polymer microparticles with specific reflection band and surface charges are used as basic reflectors, thereby achieving the significant advantages of being easy to manufacture, low cost, and stable performance, without causing interference to electromagnetic signals.

公开(公告)号：US11521852B2

公开(公告)日：2022-12-06

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: H01L21/00 ,  H01L21/02

Abstract: Provided are a method for preparing an InGaN-based epitaxial layer on a Si substrate (12), as well as a silicon-based InGaN epitaxial layer prepared by the method. The method may include the steps of: 1) directly growing a first InGaN-based layer (11) on a Si substrate (12); and 2) growing a second InGaN-based layer on the first InGaN-based layer (11).

公开(公告)号：US11498989B2

公开(公告)日：2022-11-15

申请号：US16498727

申请日：2018-12-28

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

Inventor： Guofu Zhou ,  Laurens De Haan ,  Zixuan Deng

IPC: C08F220/06 ,  C08F2/44 ,  C08F2/50 ,  C08F220/34 ,  C08F230/02 ,  C09D133/02 ,  C09D133/14 ,  C09D143/02 ,  C09K19/38

Abstract: A water-responsive interpenetrating polymer network, a preparation method and use thereof are provided. The water-responsive interpenetrating polymer network comprises an interpenetrating polymer network formed by a cholesteric liquid crystal polymer and a polyionic liquid; wherein the cholesteric liquid crystal polymer is formed by polymerization of a liquid crystal mixture; and the polyionic liquid contains a hydrophilic group or is a hydrophilic salt. The interpenetrating polymer network is water responsive without needs of activation with an alkaline solution, which simplifies the preparation process, and has stable water responsiveness performance after prolonged and/or repeated exposure to water. The water-responsive interpenetrating polymer network can be used to prepare light reflective coatings and reflective devices, and has higher commercial value.

公开(公告)号：US11256008B2

公开(公告)日：2022-02-22

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：US11175436B2

公开(公告)日：2021-11-16

申请号：US16499035

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 ,  Qiumei Nie

IPC: G02B5/00 ,  C08F222/20 ,  C08K5/08 ,  C08K5/103 ,  C09B1/00 ,  G02B1/04 ,  C08J7/04

Abstract: A dye-doped laser protective film is disclosed, comprising a polymer layer A and a polymer layer B. The polymer molecules in the polymer layer A are arranged in a left-handed helical structure which can reflect a left-handed polarized laser. The polymer molecules in the polymer layer B are arranged in a right-handed helical structure which can reflect a right-handed polarized laser. The combination of the polymer layer having the left-handed helical structure and the polymer layer having the right-handed helical structure can completely reflect circularly polarized light. In addition, the dye can absorb incident laser, so as to expand the protection angle of the laser protective film. The dye-doped laser protective film of the present disclosure has a simple manufacturing process, large protection angle and good flexibility, and can refit existing devices. Thus, the dye-doped laser protective film of the present disclosure has a good application prospect in many fields such as laser goggles, window films and the like.

公开(公告)号：US10410592B2

公开(公告)日：2019-09-10

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

Abstract: A driving method for reducing 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).

公开(公告)号：US12255231B2

公开(公告)日：2025-03-18

申请号：US17254107

申请日：2019-01-11

Applicant: South China Normal University

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

IPC: H01L29/06 ,  B82Y40/00 ,  H01L21/02 ,  H01L29/20

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.