LIGHT-REGULATION MEMBRANE

• US 20080317977A1
• Filed: 06/06/2008
• Published: 12/25/2008
• Est. Priority Date: 06/22/2007
• Status: Abandoned Application

• Current Assignee: Chiefway Engineering Co., Ltd.
• Original Assignee: Chiefway Engineering Co., Ltd.
• Inventors: Wu, Yung-Lung
• Application Number:
  US12/134,192
• Publication Number:
  US 20080317977A1
• Time in Patent Office: Days
• US Class Current: 428/1.21
• CPC Class Codes: C09K 19/544 as dispersing or encapsulating medium around the liquid crystal
• CPC Class Codes: C09K 2323/021 Inorganic, e.g. glass or silicon oxide
• CPC Class Codes: G02F 1/1334 based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
• CPC Class Codes: G02F 1/133504 Diffusing, scattering, diffracting elements associated to illuminating devices G02F1/133606
• CPC Class Codes: G02F 2201/50 Protective arrangements
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements

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.

Claims

1. A light-regulation membrane comprising:

a surface structure, said surface structure comprising an anti-stain layer and a hard coating layer;

an adhesion layer for adhering on light transmissible plate;

two polymer compound layers sandwiched between the hard coating layer of said surface structure and said adhesion layer; and

a PDLC (polymer dispersed liquid crystal) film sandwiched between said two polymer compound layers, said PDLC (polymer dispersed liquid crystal) film comprising two conducting layers and a liquid crystal layer sandwiched between said two conducting layers.

2. The light-regulation membrane as claimed in claim 1, wherein said anti-stain layer is prepared from cross-linked organosiloxane.

3. The light-regulation membrane as claimed in claim 1, wherein said anti-stain layer is prepared from thermosetting organosiloxane resin which comprises of colloidal silica and hydrolysis-condensation trialkoxysilane.

4. The light-regulation membrane as claimed in claim 1, wherein said hard coating layer is made of a compound material prepared from cross-linking copolymer acrylates and an ultraviolet absorbent.

5. The light-regulation membrane as claimed in claim 4, wherein the compound material of said hard coating layer has a specific repeating structure unit and contains a predetermined amount of carbamate bond.

6. The light-regulation membrane as claimed in claim 1, wherein said hard coating layer is a UV curable organic coating prepared from a mixture of multi-functional acrylates, silicone acrylate as a slip agent, a crosslinkage adhesion promoter, and photo-initiators.

7. The light-regulation membrane as claimed in claim 1, wherein said hard coating layer is a UV curable organic coating prepared from a mixture of multi-functional acrylates, silicone acrylate as a slip agent, a crosslinkage adhesion promoter, a (meth) acrylate terminated toughener, nano sized silica as inorganic filler, a silane coupling agent, and photo-initiators.

8. The light-regulation membrane as claimed in claim 1, wherein said hard coating layer is a UV curable organic coating prepared from a mixture of multi-functional acrylates, silicone acrylate as a slip agent, a (meth) acrylate terminated toughener, nano sized silica as inorganic filler, a silane coupling agent, and photo-initiators.

9. The light-regulation membrane as claimed in claim 1, wherein said polymer compound layers are prepared from a plastic chemical material.

10. The light-regulation membrane as claimed in claim 9, wherein said plastic chemical material is selected from the group of PET (polyethylene terephthalate), PMMA (polymethyl methacrylate), PC (polycarbonate), PP (polypropylene), PE (polyethylene) or PVDC (polyvinylidene chloride).

11. The light-regulation membrane as claimed in claim 9, further comprising two pressure sensitive adhesive layers respectively bonding said polymer compound layers to the two conducting layers of said PDLC (polymer dispersed liquid crystal) film.

12. The light-regulation membrane as claimed in claim 1, wherein said liquid crystal layer is prepared from a compound of hydroxyl polyfunctional (meth) acrylates and nematic liquid crystal cured with a polyisocyanate compound crosslinking agent.

13. The light-regulation membrane as claimed in claim 1, wherein each said conducting layer comprises a base layer of PET (polyethylene terephthalate and a layer of ITO (indium tin oxide) deposited on said base layer of PET (polyethylene terephthalate by means of spattering deposition.

14. The light-regulation membrane as claimed in claim 1, wherein said surface structure further comprises an anti-reflective layer sandwiched between said anti-stain layer and said hard coating layer.

15. The light-regulation membrane as claimed in claim 1, further comprising an anti-radiation layer sandwiched between said adhesion layer and said PDLC (polymer dispersed liquid crystal) film and adapted for blocking ultraviolet light and infrared light.

16. The light-regulation membrane as claimed in claim 1, wherein said adhesion layer is made of a mixture of organic silicone and acrylic pressure sensitive adhesive.

17. The light-regulation membrane as claimed in claim 1, further comprising two strippable protective films made of PET (polyethylene terephthalate) and respectively covered on said adhesion layer and the anti-stain layer of said surface structure.