公开(公告)号：US20200326591A1

公开(公告)日：2020-10-15

申请号：US16498733

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

IPC: G02F1/1335 ,  G02F1/137 ,  G02F1/1334 ,  C08F2/50 ,  C08K5/07 ,  C08K5/3475 ,  C08F222/20

Abstract: An electrically-responsive infrared reflective device filled with positive liquid crystals, a chiral doping agent, a light absorbing agent and a polymer network. The light absorbing agent is capable of causing a gradient change in light intensity in the filled area irradiated by ultraviolet light, so that the concentration of the polymer network changes in a gradient, thereby forming a gradient of pitch of the positive liquid crystal helix structure. When a power supply voltage is applied, the long axis of the positive liquid crystal will rotate in a direction parallel to the electric field. Since the anchoring effect of the polymer network on the liquid crystals decreases with the decrease of the concentration of the polymer network, the pitch of the positive liquid crystals is gradually damaged, such that the infrared reflection bandwidth of the infrared reflective device gradually reduces from a long wavelength to 0 nm.

公开(公告)号：US20200041827A1

公开(公告)日：2020-02-06

申请号：US16491490

申请日：2017-11-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  G.H.S ADVANCED EQUIPMENT TECHNOLOGY CO., LTD.

Inventor： Guofu ZHOU ,  Xiaowen HU ,  Nan LI

IPC: G02F1/1334 ,  G02F1/137

Abstract: A total-reflection infrared reflection device and a preparation method thereof. The device includes two light-transmitting conductive substrates disposed oppositely, the two light-transmitting conductive substrates are packaged to form a seal cavity, in the seal cavity, opposite surfaces of the two light-transmitting conductive substrates are respectively coated with a first liquid crystal layer capable of reflecting left-handed polarized light and a second liquid crystal layer capable of reflecting right-handed polarized light, the first liquid crystal layer includes a polymer network and a cholesteric liquid crystal with a left-handed spiral structure, the second liquid crystal layer includes a polymer network and a cholesteric liquid crystal with a right-handed spiral structure, the cholesteric liquid crystal with the left-handed spiral structure can reflect left-handed polarized light, and the cholesteric liquid crystal with the right-handed spiral structure can reflect right-handed polarized light.

公开(公告)号：US20200041701A1

公开(公告)日：2020-02-06

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 ,  G02B1/04 ,  C09B1/00 ,  C08K5/08 ,  C08K5/103 ,  C08F222/20 ,  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：US10263020B2

公开(公告)日：2019-04-16

申请号：US15311221

申请日：2014-12-23

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Kunyuan Xu

IPC: H01L27/13 ,  H01Q21/06 ,  H01L29/772 ,  H01L29/861 ,  H01L23/31 ,  H01L29/20 ,  H01L29/205 ,  H03L7/26 ,  H01L49/02 ,  B82Y20/00

Abstract: Provided is a planar nano-oscillator array having phase locking function, including two or more planar nano-oscillators which are arranged in parallel. The two oscillators are connected by planar resistors and capacitors, and a structure thereof includes: electrodes; respectively introducing two pairs of laterally arranged parallel insulation notch grooves into two-dimensional electron gas layers, so as to form oscillation channels; vertically disposing separating insulation notch grooves, so that a planar resistor A with low resistance which is connected to the electrode is formed on the left side, and a planar resistor B with low resistance which is connected to the electrode is formed on the right side; and arranging, between the two oscillators, an insulation capacitor notch groove which is parallel to the oscillation channels, insulating materials having a high dielectric constant being filled therein.

公开(公告)号：US20180246316A1

公开(公告)日：2018-08-30

申请号：US15754158

申请日：2016-01-07

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

Inventor： Guofu ZHOU ,  Fangchao TIAN ,  Zhijie LUO ,  Weinan ZHANG

IPC: G02B26/00

CPC classification number: G02B26/005 ,  G02B26/00

Abstract: Three-layer full-color dynamic electronic paper, comprising a substrate, a controller, a first EWOD display layer, a second EWOD display layer and a third EWOD display layer, wherein each of the first, second and third EWOD display layer is comprised of an upper transparent electrode plate, a hydrophobic insulating layer, pixel walls, colored ink, colorless liquid, a lower transparent electrode plate, an encapsulation adhesive, and a driving chip connected to the upper transparent electrode plate and the lower transparent electrode plate respectively; the lower transparent electrode plate of the third EWOD display layer is located above the substrate; the colored ink filled in the first, second and third EWOD display layer is cyan ink, magenta ink and yellow ink, respectively; and, the controller controls voltage waveforms of the three driving chips according to a subtractive color mixture principle of three primary colors for printing, so as to realize full-color displaying.

公开(公告)号：US20180138983A1

公开(公告)日：2018-05-17

申请号：US15490479

申请日：2017-04-18

Applicant: South China Normal University

Inventor： Zhiyou GUO ,  Jie SUN ,  Jing HUANG ,  Huiqing SHUN ,  Hongyong HUANG ,  Yong HUANG ,  Xian YANG ,  Zhuding ZHANG ,  Yang LIU ,  Min GUO ,  Shunyu YAO ,  Xinyan YI ,  Xuancong FANG

IPC: H04B10/50 ,  H04B10/116 ,  H05B33/08 ,  H01L27/15 ,  H01L49/02 ,  H01L33/12 ,  H01L33/06 ,  H01L33/14 ,  H01L33/42

CPC classification number: H04B10/502 ,  H01L27/15 ,  H01L28/10 ,  H01L33/06 ,  H01L33/12 ,  H01L33/145 ,  H01L33/42 ,  H04B10/116 ,  H05B33/0821

Abstract: A visible light communication emission device with improved response frequency is provided, comprising a substrate, wherein an inductance coil module is provided on the substrate, a LED chip matrix formed by series connection of a plurality of LED chips is provided on the inductance coil module, and the inductance coil module and the LED chip matrix are connected in series, wherein inductance value L of the inductance coil module is configured to be: L=1/(ω2C), with C representing capacity in the device provided by LED chips and ω representing frequency, wherein the inductance coil module comprises more than one inductance coil whose composition materials from inside to outside are successively Cr, Al, Cr, Ti, and Ag.