Title:
LIQUID CRYSTAL COMPOSITION AND DIMMING DEVICE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/238244
Kind Code:
A1
Abstract:
The present invention provides a liquid crystal composition and a dimming device thereof. The liquid crystal composition comprises a component A composed of one or more liquid crystals with negative dielectric anisotropy and a component B composed of one or more compounds selected from a general formula I, wherein the optical anisotropy of the liquid crystal composition is larger than 0.14. The elastic coefficient of a liquid crystal system is adjusted by introducing a bi-mesogenic compound into a negative liquid crystal or a negative liquid crystal mixture. When the liquid crystal composition of the present invention is used for the dimming device, the minimum light transmittance of the dimming device in the dark state can be significantly reduced, the adjustment range of the light transmittance in the light state and the dark state can be expanded, and the haze in the dark state can be increased, thereby broadening the use range. R 1-MG 1-X-MG 2-R 2 I
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Inventors:
ZHANG HONGWEI (CN)
SHEN WENQING (CN)
TANG JIANHUA (CN)
ZHANG LI (CN)
SHEN WENQING (CN)
TANG JIANHUA (CN)
ZHANG LI (CN)
Application Number:
PCT/CN2021/073067
Publication Date:
December 02, 2021
Filing Date:
January 21, 2021
Export Citation:
Assignee:
SMART LIQUID CRYSTAL TECH CO LTD (CN)
International Classes:
C09K19/14
Foreign References:
| CN107075370A | 2017-08-18 | |||
| CN104321410A | 2015-01-28 | |||
| CN105745307A | 2016-07-06 | |||
| CN106536678A | 2017-03-22 | |||
| GB2356629A | 2001-05-30 | |||
| CN108663866A | 2018-10-16 |
Attorney, Agent or Firm:
BEIJING ARETE INTELLECTUAL PROPERTY AGENCY (CN)
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