Multiple and single layers liquid crystal dispersion devices for common and direct glazing applications and methods thereof

Inactive Publication Date: 2018-11-01
GAUZY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about a method for making a low-cost and haze-free multi-layer of liquid crystal dispersion in a polymer matrix film. The method involves using releasable supporting films to form the film, curing it with UV light or heat, and then detaching the supporting films. The method also involves using a second liquid crystal dispersion to form a second layer, and curing it using UV or electron beam light. The final step involves detaching the supporting films and enclosing the remaining liquid crystal layers in metallized supporting glasses. The invention provides a low-cost and efficient method for making a multi-layer liquid crystal film that is haze-free and easy to direct-glaze.

Problems solved by technology

With no applied voltage, the liquid crystals are randomly arranged in the droplets, resulting in scattering of light as it passes through the smart window assembly.
This conformation is not optimal since attaching several PDLC films together causes a loss of clarity due to increase in total thickness of the resulting films, complications and high cost of glass lamination of the final window product.
All of the above prior art citations lack the essential technology of providing means and methods to provide a true liquid crystal multilayer in a PDLC device.

Method used

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  • Multiple and single layers liquid crystal dispersion devices for common and direct glazing applications and methods thereof
  • Multiple and single layers liquid crystal dispersion devices for common and direct glazing applications and methods thereof
  • Multiple and single layers liquid crystal dispersion devices for common and direct glazing applications and methods thereof

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Embodiment Construction

[0092]The following description is provided, so as to enable any person skilled in the art to make use of the invention and sets forth the best modes contemplated by the inventor of carrying out this invention. Various modifications, however, are adapted to remain apparent to those skilled in the art, since the generic principles of the present invention have been defined specifically to provide a multilayer of liquid crystal in PDLC films. Thus a novel method for creating such films has been obtained.

[0093]In the following, the present invention along with embodiments thereof will be described in detail with reference to the drawings.

[0094]Retrofit(ting): refers hereinafter to the modification of a conventional window or surface by combining the same in some manner with an enhancement, i.e., a switchable glazing, non-switchable light modulating device, etc.

[0095]Referring now to FIG. 1, a schematic illustration of the method 100 for manufacturing one embodiment of the present inven...

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Abstract

Means and methods for manufacturing a multilayer of liquid crystal dispersion film using releasable supporting films and means and methods for manufacturing a haze-free and low-cost multi liquid crystal-layer PDLC, LCDP, PSLC or polymer network using reliable supporting films.

Description

BACKGROUND OF THE INVENTION[0001]This invention relates to liquid crystal films, more specifically to liquid crystal films comprising multiple layers of liquid crystals and methods of manufacturing the same.[0002]In liquid crystal dispersion devices, liquid crystals are dissolved or dispersed into a liquid polymer followed by solidification or curing of the polymer. During the change of the polymer from a liquid to solid, the liquid crystals become incompatible with the solid polymer and form droplets throughout the solid polymer. The curing conditions affect the size of the droplets that in turn affect the final operating properties of the “smart window”. Typically, the liquid mix of polymer and liquid crystals is placed between two layers of glass or plastic, which include a thin layer of a transparent, conductive material followed by curing of the polymer, thereby forming the basic sandwich structure of the smart window. This structure is in effect a capacitor.[0003]Electrodes fr...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B7/06B32B27/36B32B17/06B32B37/20B32B38/00
CPCB32B27/08B32B7/06B32B27/36B32B17/064B32B37/203B32B38/0008B32B2307/412B32B2307/748B32B2457/202B32B2255/205B32B2038/0076B32B2305/72B32B2305/55B32B2310/0831B32B2367/00B32B2255/10B32B2255/26B32B2605/006C09K19/544C09K2019/546B32B17/10B32B2457/00B32B2310/0887B32B38/0036B32B17/10899B32B2037/268B32B38/10B32B37/206B32B37/15
InventorHAKEMI, HASSAN-ALILOFER, ADRIANPESO, EYALGAL-FUSS, DANA
OwnerGAUZY