The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2021
Filed:
Oct. 10, 2018
South China Normal University, Guangzhou, CN;
Shenzhen Guohua Optoelectronics Co., Ltd., Shenzhen, CN;
Academy of Shenzhen Guohua Optoelectronics, Shenzhen, CN;
Guofu Zhou, Guangzhou, CN;
Xiaowen Hu, Guangzhou, CN;
Wei Zhao, Guangzhou, CN;
Weijie Zeng, Guangzhou, CN;
Chun Ju, Guangzhou, CN;
Lingling Shui, Guangzhou, CN;
South China Normal University, Guangzhou, CN;
Shenzhen Guohua Optoelectronics Co., Ltd., Shenzhen, CN;
Academy of Shenzhen Guohua Optoelectronics, Shenzhen, CN;
Abstract
A liquid crystal mixture and a temperature-responsive infrared reflection device made by using the liquid crystal mixture containing potassium laurate. Infrared light can pass through the device within a non-working temperature range, and a chiral dopant enables potassium laurate to form a cholesteric phase within a working temperature range. The birefringence value of the potassium laurate gradually increases with the increase of temperature between 12.5° C. and 26° C., so that the infrared reflection bandwidth of the device constantly increases. The birefringence value of the potassium laurate gradually decreases with the increase of temperature between 26° C. and 54.5° C., so that the infrared reflection bandwidth of the device constantly decreases. The infrared reflection bandwidth of the infrared reflection device can vary with temperature by adjusting the proportions of the ingredients of the liquid crystal mixture containing potassium laurate.