Title:
METHOD FOR USING FLUORINATED AZOBENZENE TO REGULATE LIQUID CRYSTAL REFLECTION COLOUR
Document Type and Number:
WIPO Patent Application WO/2019/105491
Kind Code:
A2
Abstract:
The present invention belongs to the technical field of liquid crystal materials, and specifically relates to a method for using a fluorinated azobenzene to regulate a liquid crystal reflection colour. The fluorinated azobenzene has the feature of multiple wavelength photoresponses, and can undergo different degrees of cis-trans isomerisation when irradiated with light having different wavelengths. The fluorinated azobenzene, a chiral dopant and a liquid crystal matrix are mixed evenly according to a certain ratio, and poured into a liquid crystal cell. The wavelength of a stimulating light source is altered to accurately regulate a reflection colour of the liquid crystal cell to be red, green or blue. The regulation method uses a photostationary state to control the liquid crystal reflection colour, thereby overcoming the limitation that traditional methods use a transition state to regulate a reflection colour. The present invention may be applied to numerous field such as liquid crystal displays, optical logic switches, optical storage and anti-counterfeiting.
Inventors:
YU YANLEI (CN)
QIN LANG (CN)
WEI JIA (CN)
QIN LANG (CN)
WEI JIA (CN)
Application Number:
PCT/CN2019/073992
Publication Date:
June 06, 2019
Filing Date:
January 30, 2019
Export Citation:
Assignee:
UNIV FUDAN (CN)
International Classes:
C09K19/56; G02F1/13
Attorney, Agent or Firm:
XU & PARTNERS, LLC. (CN)
Download PDF: