Light Control Film

• US 20100047593A1
• Filed: 12/21/2007
• Published: 02/25/2010
• Est. Priority Date: 12/21/2006
• Status: Active Grant

• Current Assignee: Resonac Corp. (Resonac Holdings Corp.)
• Original Assignee: Hitachi Chemical Company Limited (Resonac Holdings Corp.)
• Inventors: Higashida, Osamu, Ogawa, Michio
• Granted Patent: US 9,638,979 B2
• Time in Patent Office: Days
• US Class Current: 428/447
• CPC Class Codes: G02F 1/1334 based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
• CPC Class Codes: G02F 1/172 based on a suspension of orientable dipolar particles, e.g. suspended particles displays
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]

Abstract

The present invention relates to a light control film, comprising:

• • two transparent electroconductive substrates; and
  • a light control layer sandwiched between the two transparent electroconductive substrates,
  • wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the concentration of the light control suspension in the vicinity of each of the transparent electroconductive substrates is smaller than that of the light control suspension in the middle in the thickness direction of the light control layer.

Claims

1. A light control film, comprising:

two transparent electroconductive substrates; and

a light control layer sandwiched between the two transparent electroconductive substrates,

wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the concentration of the light control suspension in the vicinity of each of the transparent electroconductive substrates is smaller than that of the light control suspension in the middle in the thickness direction of the light control layer.

2. The light control film according to claim 1, wherein the light control layer has therein no interfacial surface.

3. The light control film according to claim 1, wherein a polymeric medium for forming the resin matrix contains:

a silicone resin having a substituent having an ethylenically unsaturated bond; and

a photopolymerization initiator.

4. The light control film according t claim 1, wherein the light control suspension contains an acrylic acid ester oligomer having a fluoro group and a hydroxyl group.