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
CN105676489AActive Publication Date: 2016-06-15SHENZHEN GUOHUA OPTOELECTRONICS +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN GUOHUA OPTOELECTRONICS
Publication Date
2016-06-15

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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.
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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

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