Title:
TEMPERATURE-ADAPTIVE LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DIMMING DEVICE APPLYING SAME
Document Type and Number:
WIPO Patent Application WO/2022/257818
Kind Code:
A1
Abstract:
The present invention relates to a temperature-adaptive liquid crystal composition and a liquid crystal dimming device applying same. The liquid crystal composition comprises a nematic liquid crystal composition, a negative-temperature-sensitive chiral composition and a bi-mesogenic composition. In the present application, a negative-temperature-sensitive chiral composition has a relatively large negative wavelength offset as the temperature rises, and in order to improve the stability thereof, a low-temperature-sensitive chiral compound can be further compounded for screw pitch adjustment, such that a selective reflection wavelength can be automatically adjusted to a required waveband range. By means of adding a bi-mesogenic composition with a low spiral distortion capability, elastic constant adjustment is performed to expand a wavelength offset, and finally, a liquid crystal dimming device has a relatively large negative wavelength offset and a relatively high reflectivity with respect to external light, thereby realizing adaptive adjustment of an indoor temperature.
Inventors:
ZHANG HONGWEI (CN)
LI LI (CN)
SHEN XIMEI (CN)
LI LI (CN)
SHEN XIMEI (CN)
Application Number:
PCT/CN2022/096268
Publication Date:
December 15, 2022
Filing Date:
May 31, 2022
Export Citation:
Assignee:
SMART LIQUID CRYSTAL TECH CO LTD (CN)
International Classes:
C09K19/44; G02F1/01; G02F1/137
Foreign References:
| CN113238421A | 2021-08-10 | |||
| CN113429982A | 2021-09-24 | |||
| CN104321410A | 2015-01-28 | |||
| CN1381438A | 2002-11-27 | |||
| CN1773329A | 2006-05-17 | |||
| CN110208990A | 2019-09-06 | |||
| CN110467926A | 2019-11-19 | |||
| GB2356629A | 2001-05-30 | |||
| GB2387603A | 2003-10-22 | |||
| JP2002212145A | 2002-07-31 |
Other References:
KRIVOSHEY ALEXANDER I, KUTULYA LIDIYA A, VASHCHENKO VALERY V, PIVNENKO MICHAIL N, PIVNENKO NIKOLAY S, TOLOCHKO ANATOLIY S, KULISHO: "New chiral mesogens 3(R)-methylcyclohexanone derivatives", SPIE SMART STRUCTURES AND MATERIALS + NONDESTRUCTIVE EVALUATION AND HEALTH MONITORING, 2005, SAN DIEGO, CALIFORNIA, UNITED STATES, SPIE, US, vol. 5257, no. 1, 4 October 2002 (2002-10-04), US, XP093013283, ISSN: 0277-786X, ISBN: 978-1-5106-4548-6
MEYER ROBERT B., LONBERG FRANKLIN, CHANG CHING-CHAO: "Liquid crystal smart reflectors", SPIE SMART STRUCTURES AND MATERIALS + NONDESTRUCTIVE EVALUATION AND HEALTH MONITORING, 2005, SAN DIEGO, CALIFORNIA, UNITED STATES, SPIE, US, vol. 2441, 22 May 1995 (1995-05-22), US, pages 68 - 79, XP093013284, ISSN: 0277-786X, ISBN: 978-1-5106-4548-6, DOI: 10.1117/12.209799
CHEPELEVA L V ET AL: "Photochemical transformations of 2-arylidene-menthanones - Chiral dopants for liquid crystalline systems", PROCEEDINGS OF SPIE, IEEE, US, vol. 5257, 30 September 2002 (2002-09-30), US , pages 71 - 76, XP002471676, ISBN: 978-1-62841-730-2, DOI: 10.1117/12.545805
KRIVOSHEY ALEXANDER I., KUTULYA LIDIYA A., SHKOLNIKOVA NATALIA I., PIVNENKO NIKOLAY S.: "Arylidene derivatives of 3R-methylcyclohexanone as chiral dopants for induced cholesterics", SPIE SMART STRUCTURES AND MATERIALS + NONDESTRUCTIVE EVALUATION AND HEALTH MONITORING, 2005, SAN DIEGO, CALIFORNIA, UNITED STATES, SPIE, US, 20 July 2004 (2004-07-20), US, pages 249 - 256, XP093013287, ISSN: 0277-786X, ISBN: 978-1-5106-4548-6, DOI: 10.1117/12.569830
ROBERT B. MEYER, FRANKLIN LONBERG, CHING-CHAO CHANG : "Cholesteric Liquid Crystal Smart Reflectors", MOLECULAR CRYSTALS AND LIQUID CRYSTALS, TAYLOR & FRANCIS INC., US, vol. 288, no. 1, 1 January 1996 (1996-01-01), US , pages 47 - 61, XP009542561, ISSN: 1058-725X, DOI: 10.1080/10587259608034583
MEYER ROBERT B., LONBERG FRANKLIN, CHANG CHING-CHAO: "Liquid crystal smart reflectors", SPIE SMART STRUCTURES AND MATERIALS + NONDESTRUCTIVE EVALUATION AND HEALTH MONITORING, 2005, SAN DIEGO, CALIFORNIA, UNITED STATES, SPIE, US, vol. 2441, 22 May 1995 (1995-05-22), US, pages 68 - 79, XP093013284, ISSN: 0277-786X, ISBN: 978-1-5106-4548-6, DOI: 10.1117/12.209799
CHEPELEVA L V ET AL: "Photochemical transformations of 2-arylidene-menthanones - Chiral dopants for liquid crystalline systems", PROCEEDINGS OF SPIE, IEEE, US, vol. 5257, 30 September 2002 (2002-09-30), US , pages 71 - 76, XP002471676, ISBN: 978-1-62841-730-2, DOI: 10.1117/12.545805
KRIVOSHEY ALEXANDER I., KUTULYA LIDIYA A., SHKOLNIKOVA NATALIA I., PIVNENKO NIKOLAY S.: "Arylidene derivatives of 3R-methylcyclohexanone as chiral dopants for induced cholesterics", SPIE SMART STRUCTURES AND MATERIALS + NONDESTRUCTIVE EVALUATION AND HEALTH MONITORING, 2005, SAN DIEGO, CALIFORNIA, UNITED STATES, SPIE, US, 20 July 2004 (2004-07-20), US, pages 249 - 256, XP093013287, ISSN: 0277-786X, ISBN: 978-1-5106-4548-6, DOI: 10.1117/12.569830
ROBERT B. MEYER, FRANKLIN LONBERG, CHING-CHAO CHANG : "Cholesteric Liquid Crystal Smart Reflectors", MOLECULAR CRYSTALS AND LIQUID CRYSTALS, TAYLOR & FRANCIS INC., US, vol. 288, no. 1, 1 January 1996 (1996-01-01), US , pages 47 - 61, XP009542561, ISSN: 1058-725X, DOI: 10.1080/10587259608034583
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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