Title:
LIQUID CRYSTAL MIXTURE AND TEMPERATURE-RESPONSIVE INFRARED REFLECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/076220
Kind Code:
A1
Abstract:
Disclosed are a liquid crystal mixture and a temperature-responsive infrared reflection device which is prepared by using a liquid crystal mixture containing potassium laurate, wherein infrared light can pass through the device within a non-working temperature range, and a chiral dopant can form the potassium laurate into a cholesteric phase within a working temperature range; and the potassium laurate has a bi-refringence value that gradually increases along with the increase of temperature between 12.5ºC-26ºC, thereby constantly increasing the infrared reflection bandwidth of the device, and the potassium laurate has a bi-refringence value that gradually decreases along with the increase of temperature between 26ºC-54.5ºC, thereby constantly decreasing the infrared reflection bandwidth of the device. Thus, by means of the adjustment of material proportions of a liquid crystal mixture containing potassium laurate, the infrared reflection bandwidth of the infrared reflection device can vary with temperature, thereby meeting people's needs as the environment changes, and the device can be applied in fields such as homes and buildings.
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Inventors:
ZHOU GUOFU (CN)
HU XIAOWEN (CN)
ZHAO WEI (CN)
ZENG WEIJIE (CN)
JU CHUN (CN)
SHUI LINGLING (CN)
HU XIAOWEN (CN)
ZHAO WEI (CN)
ZENG WEIJIE (CN)
JU CHUN (CN)
SHUI LINGLING (CN)
Application Number:
PCT/CN2018/109640
Publication Date:
April 25, 2019
Filing Date:
October 10, 2018
Export Citation:
Assignee:
UNIV SOUTH CHINA NORMAL (CN)
SHENZHEN GUOHUA OPTOELECTRONICS CO LTD (CN)
ACAD SHENZHEN GUOHUA OPTOELECTRONICS (CN)
SHENZHEN GUOHUA OPTOELECTRONICS CO LTD (CN)
ACAD SHENZHEN GUOHUA OPTOELECTRONICS (CN)
International Classes:
C09K19/40; C09K19/58; G02B5/26; G02F1/13
Domestic Patent References:
| WO2016048016A1 | 2016-03-31 |
Other References:
BRAGA, W.S. ET AL.: "Reentrant Isotropic-Calamitic Nematic Phase Transition in Potassium Laurate-Decanol-D20 Mixtures", EUROPEAN PHYSICAL JOURNAL E, vol. 24, 23 November 2007 (2007-11-23), pages 247 - 250, XP019546282, DOI: doi:10.1140/epje/i2007-10234-0
LICINIO, P. ET AL.: "Pretransitional Scaling Close to a Double Critical Point in a Potassium Laurate, 1-Decanol, and Heavy Water Lyotropic Liquid Crystal", PHYSICAL REVIEW E, vol. 65, 031714, 1 March 2002 (2002-03-01)
KIMURA, N.M. ET AL.: "Reentrant Isotropic - Discotic Nematic Lyotropic Phase Transition: A Refractive Index Study", LIQUID CRYSTALS, vol. 31, no. 3, 31 December 2004 (2004-12-31), pages 1 - 4, XP055594728
SANTORO, P.A. ET AL.: "Temperature Dependence of Refractive Indices Near Uniaxial-Biaxial Nematic Phase Transition", PHYSICS LETTERS A, vol. 353, 18 January 2006 (2006-01-18), pages 512 - 515, XP024929309, DOI: doi:10.1016/j.physleta.2006.01.019
LICINIO, P. ET AL.: "Pretransitional Scaling Close to a Double Critical Point in a Potassium Laurate, 1-Decanol, and Heavy Water Lyotropic Liquid Crystal", PHYSICAL REVIEW E, vol. 65, 031714, 1 March 2002 (2002-03-01)
KIMURA, N.M. ET AL.: "Reentrant Isotropic - Discotic Nematic Lyotropic Phase Transition: A Refractive Index Study", LIQUID CRYSTALS, vol. 31, no. 3, 31 December 2004 (2004-12-31), pages 1 - 4, XP055594728
SANTORO, P.A. ET AL.: "Temperature Dependence of Refractive Indices Near Uniaxial-Biaxial Nematic Phase Transition", PHYSICS LETTERS A, vol. 353, 18 January 2006 (2006-01-18), pages 512 - 515, XP024929309, DOI: doi:10.1016/j.physleta.2006.01.019
Attorney, Agent or Firm:
JIAQUAN IP LAW FIRM (CN)
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