IP Library Granted Patent US 8,570,642
Granted Patent B2
US 8,570,642 · App. 13/575,108 · Granted Oct 29, 2013

Light control film

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Quick Facts
Patent No.
US 8,570,642
App. No.
13/575,108
Granted
Oct 29, 2013
Kind
B2
Abstract

Disclosed is a light control film comprising: two of transparent conductive resin substrates each having a transparent conductive layer and a transparent resin substrate; and a light control layer interposed between the two transparent conductive resin substrates to be in contact with the transparent conductive layer sides, the light control layer containing: a resin matrix; and a light control suspension dispersed in the resin matrix, wherein the transparent conductive layer contains: an organic binder resin; and a conductive polymer. The present invention can provide a light control film having satisfactory adhesiveness between the light control layer and the transparent conductive layer and having excellent radio wave transparency.

Claims (8)

1. A light control film comprising: two of transparent conductive resin substrates each having a transparent conductive layer and a transparent resin substrate; and a light control layer interposed between the two transparent conductive resin substrates to be in contact with the transparent conductive layer sides, the light control layer containing: a resin matrix; and a light control suspension dispersed in the resin matrix,

wherein the transparent conductive layer contains: an organic binder resin; and a conductive polymer.

2. The light control film according to claim 1 , wherein the conductive polymer is at least one selected from the group consisting of a polythiophene derivative, a polyaniline derivative, and a polypyrrole derivative.

3. The light control film according to claim 1 , wherein the organic binder resin is a resin obtainable by curing a polymerizable monomer or a polymerizable oligomer with heat or light.

4. The light control film according to claim 1 , wherein the entirety or a portion of the organic binder resin is composed of (meth)acrylate containing a hydroxyl group.

5. The light control film according to claim 1 , wherein the entirety or a portion of the organic binder resin is composed of urethane acrylate containing a pentaerythritol skeleton.

6. The light control film according to claim 1 , wherein the transparent conductive layer has a surface resistivity value of the transparent conductive layer of 1000Ω/□ or greater.

7. The light control film according to claim 1 , wherein a radio wave shielding property in the frequency range of 500 MHz or higher is 5 dB or less.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 29, 2024
From: RESONAC CORPORATION
To: GAUZY LTD
Reel/Frame 068732/0352 →
CHANGE OF NAME Recorded Mar 3, 2023
From: SHOWA DENKO MATERIALS CO., LTD.
To: RESONAC CORPORATION
Reel/Frame 062946/0125 →
CHANGE OF NAME Recorded Mar 2, 2023
From: HITACHI CHEMICAL COMPANY, LTD.
To: SHOWA DENKO MATERIALS CO., LTD.
Reel/Frame 062917/0865 →
CHANGE OF ADDRESS Recorded Sep 17, 2013
From: HITACHI CHEMICAL COMPANY, LTD.
To: HITACH CHEMICAL COMPANY, LTD.
Reel/Frame 031264/0614 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 25, 2012
From: NOMURA, SATOYUKI; MORISHITA, YOSHII; TANAKA, TOORU
To: HITACHI CHEMICAL COMPANY, LTD.
Reel/Frame 028634/0077 →