Light-regulation membrane

Abstract

A light-regulation membrane includes a surface structure having an anti-stain layer for surface cleanness, a hard coating layer for surface protection, and anti-reflective layer sandwiched between the anti-stain layer and the hard coating layer for reducing glare and ultra-violet; an adhesion layer for directly and repetitively adhering on transmissible plate even after peeled-off; two polymer compound layers sandwiched between the hard coating layer and the adhesion layer; and a PDLC (polymer dispersed liquid crystal) film sandwiched between the two polymer compound layers comprising two conducting layers and a liquid crystal layer sandwiched in-between the two conducting layers. The two conducting layers can be connected to an electric power source. So, the transparency of the light-regulation membrane can be regulated from opaque to clear or reversely while the transmittance of the PDLC film being adjusted by the power, and then any light source passing through the light-regulation membrane can be controlled.

Description

[0001]This application is a Continuation-In-Part of my patent application, Ser. No. 11 / 812,969, filed on Jun. 22, 2007.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to light regulation technology and more specifically, to a light-regulation membrane that utilizes two polymer compound layers to support a PDLC (polymer dispersed liquid crystal) film for regulating light and an adhesion layer for repetitively adhering on light transmissible plate e.g. transparent glass panel or the like.[0004]2. Description of the Related Art[0005]Conventionally, to keep a window or partition glass from sight or to isolate the radiation heat of the sun, a blind, Low-emissive glass or heat insulation film may be installed. When a heat insulation film is covered on a window glass, the color of the heat insulation film produces a certain extent of light-blocking effect. However, a regular heat insulation film simply reduces the extent of the glare of the rad...

AI Technical Summary

Benefits of technology

[0011]According to another aspect of the present invention, the adhesion layer is prepared from a silicone / acrylic based pressure sensitive adhesive composition, and can be directly adhered on light transmissible plate such as transparent glass, PMMA (polymethyl methacrylate) and PC (polycarbonate) panels. During installation of the light-regulation membrane, it is not necessary to destruct the original construction or indoor design. Because of the reusable characteristic of the adhesion layer, the installation, repair and replacement of the light regulation membrane are easy.

[0012]According to still another aspect of the present invention, the surface structure comprises an anti-stain layer prepared from thermosetting organosiloxane resin which comprises of colloidal silica and hydrolysis-condensation trialkoxysilane, a hard coating layer, and an anti-reflective layer sandwiched between the anti-stain layer and the hard coating layer. The anti-stain layer facilitates the cleaning work. The hard coating layer protects the transparent glass against cracking, having wear-resisting and solvent-resisting characteristic.

[0013]According to still another aspect of the present invention, the polymer compound layers are prepared from a plastic chemical material, for example, PET (polyethylene terephthalate), PMMA (polymethyl methacrylate) that support the PDLC (polymer dispersed liquid crystal) film without affecting its functioning. By means of the effect of the polymer compound layers, the light-regulation membrane is applicable to glass curtain wall, vehicle sliding sunroof, indoor partition wall, etc. When the light-regulation membrane is in the nontransmissible status, the glass to which the light-regulation membrane is adhered can be used as a rear projection screen. In general, the light-regulation membrane provides an excellent support effect and an added function, having excellent applicability.

[0014]According to still another aspect of the present invention, the light-regulation membrane further comprises an anti-radiation layer, having anti-ultraviolet and anti-infrared characteristics. Further, the anti-radiation layer can be made in any of a variety of colors. When the light-regulation membrane is adhered to a glass panel of a building, the anti-radiation layer also blocks infrared light rays from the radiation of the sun, producing a heat isolation effect to keep the indoor space warm in winter or cool in summer and saving much power consumption. Therefore, the invention is an environmentally friendly design.

Problems solved by technology

However, a regular heat insulation film simply reduces the extent of the glare of the radiation of the sun.

It cannot effectively block ultraviolet light.

Further, the heat insulation effect of conventional heat insulation films is still not perfect.

Conventional heat insulation films tend to be oxidized, and can easily be caused to wrinkle or to fade after a long use.

Further, when covering a glass curtain wall, vehicle window glass, indoor partition wall or the like with a dark color heat insulation film, the dark color heat insulation film can block light and isolate heat.

However, during a dark or raining condition, a color heat insulation film prohibits light from passing through the glass panel.

When a heat insulation film is used indoors or in a car, it interferes with people's sight.

Further, when a heat insulation film is covered on a glass panel, a person can no longer regulate the transmittance of the glass panel.

Further, when a blind is used, the installation procedure is complicated.

Further, because a window blind must be mounted on the inner side of a window, it occupies much indoor space.

Further, the cleaning work of a window blind is also complicated.

Although a polyvision privacy glass can change its transmissible status subject to the application of electric current, its installation is complicated, and the original indoor design may have to be destructed.

Further, a polyvision privacy glass tends to be covered with dust and must be regularly cleaned.

Therefore, a polyvision privacy glass has the drawbacks of complicated structure, expensive cost, complicated maintenance and cleaning works.

However, PET will decompose and become aged soon when exposed to the radiation of the sun.

Further, the surface of this kind of glass panel tends to be scratched, or damaged by a solvent.

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