Infrared reflection device based on electrical response

A technology of infrared reflection and electrical response, applied in instruments, nonlinear optics, optics, etc., can solve problems such as the unfavorable popularization and wide application of coated glass, and achieve the effect of widening bandwidth, increasing transmission, and reducing indoor temperature

Active Publication Date: 2016-06-15
SHENZHEN GUOHUA OPTOELECTRONICS +2
View PDF6 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This shortcoming is not conducive to the popularizati

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Infrared reflection device based on electrical response
  • Infrared reflection device based on electrical response
  • Infrared reflection device based on electrical response

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The following method is used to prepare an infrared reflective device based on electrical response. Firstly, a first transparent substrate 1 and a second transparent substrate 8 are prepared, and the first transparent substrate 1 and the second transparent substrate 8 are arranged opposite to each other. The parallel alignment layer 2 is spin-coated on the opposite surfaces of the first light-transmitting substrate 1 and the second light-transmitting substrate 8, and is rubbed and oriented; The optical substrate 8 is prepared as a liquid crystal cell. Weigh negative liquid crystal, chiral dopant, chiral monomer, photoinitiator and ultraviolet absorber to brown reagent bottle, said negative liquid crystal: chiral dopant: chiral monomer: photoinitiator The mass ratio of agent:ultraviolet light absorber is 83.8:5:10:0.2:1, mix evenly, and heat to 70°C, so that the liquid crystal is transformed into an isotropic liquid state, and the liquid crystal mixture 6 is obtained, an...

Embodiment 2

[0043] Embodiment 2 is substantially the same as Embodiment 1, and the difference is that the photoinitiator is the Irgacure-651 of TCI Company, and its structure is:

[0044]

[0045] The mass ratio of the negative liquid crystal: chiral dopant: chiral monomer: photoinitiator: ultraviolet absorber is 80:3:5:0.1:1.

Embodiment 3

[0047] Example 2 is basically the same as Example 1, except that the mass ratio of the negative liquid crystal: chiral dopant: chiral monomer: photoinitiator: ultraviolet absorber is 90:13:15: 0.8:3.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses an infrared reflection device based on electrical response and a preparation method thereof. Chiral doping agent, chiral monomers, photoinitiator, ultraviolet absorbent are mixed with negative liquid crystal to obtain a liquid crystal mixture, the liquid crystal mixture is disposed between two light transmission substrates to which voltage can be accessed, ultraviolet light irradiates a liquid crystal cell from one side of the first light transmission substrate, the photoinitiator drives the chiral monomers to polymerize a chiral polymer network under the effect of the ultraviolet light, the generated chiral polymer network concentration has a concentration gradient, namely the chiral monomer concentration has a concentration gradient, so that a pitch gradient of a negative liquid crystal helical structure is formed, and a wide bandwidth for reflecting infrared light can be obtained. The chiral polymer network can capture impurity cations in the liquid crystal mixture, when the substrates are powered, the impurity cations drive the chiral polymer network to move, so that the chiral monomer concentration gradient is decreased, the pitch gradient is decreased, and the purpose of changing the bandwidth from wide to narrow is achieved.

Description

technical field [0001] The invention relates to an infrared reflective device, in particular to an infrared reflective device based on electric response. Background technique [0002] The indoor environment of a building is closely related to the health of the occupants. Therefore, people widely use heating equipment, ventilation equipment, and air conditioning equipment to make it have a humid indoor environment. As people use these devices, it not only causes an increase in carbon dioxide emissions, but also has a very adverse impact on the environment. As a result, building shell technology began to play an important role, and a large number of innovative methods began to emerge. People try to install shutters, shades, liquid crystal windows and inorganic coatings on the building shell, but these technologies can neither adjust the indoor temperature, nor absorb and reflect visible light, and cannot meet the needs of people who want to change the indoor environment. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02F1/13G02F1/1333
Inventor 胡小文鞠纯李笑然周国富
Owner SHENZHEN GUOHUA OPTOELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap