Low reflective antistatic hardcoat film

• US 7,014,912 B2
• Filed: 09/24/2001
• Issued: 03/21/2006
• Est. Priority Date: 03/17/1998
• Status: Expired due to Term

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: Suzuki, Hiroko, Niimi, Takahiro
• Primary Examiner(s): Jackson, Monique R.
• Application Number:
  US09/960,391
• Publication Number:
  US 20020068156A1
• Time in Patent Office: 1,639 Days
• Field of Search: 428/208, 428/323, 428/331, 428/332, 428/421, 428/446, 428/480
• US Class Current: 428/208
• CPC Class Codes: C03C 17/34 with at least two coatings having different compositions C03C17/44 takes precedence
• CPC Class Codes: C03C 17/42 at least one coating of an organic material and at least one non-metal coating
• CPC Class Codes: G02B 1/113 using inorganic layer materials only
• CPC Class Codes: G02B 1/116 including electrically conducting layers
• CPC Class Codes: G02B 1/14 Protective coatings, e.g. hard coatings
• CPC Class Codes: G02B 1/16 having an anti-static effect, e.g. electrically conducting coatings
• CPC Class Codes: G02B 2207/121 Antistatic or EM shielding layer
• CPC Class Codes: Y10T 428/24909 Free metal or mineral containing
• CPC Class Codes: Y10T 428/24975 No layer or component greater than 5 mils thick
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/259 Silicic material
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31667 Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]

Abstract

A low reflective antistatic film is provided which can prevent electrostatic deposition of foreign materials on the surface thereof, has hardness enough high not to cause a deterioration in transparency derived from a scratch or the like created upon being rubbed, and can prevent reflection of outdoor daylight from the surface of a transparent substrate. The low reflective antistatic film comprises: a transparent substrate film; and, provided on the transparent substrate film in the following order, a transparent conductive layer, a hardcoat layer, and a low refractive layer, the low refractive layer having a lower refractive index than the hardcoat.

Claims

1. A low reflective antistatic hardcoat film comprising:

a transparent substrate film;

a transparent conductive layer formed on the transparent substrate film;

a hardcoat layer formed on the transparent conductive layer, the hardcoat layer comprising an anisotropic conductive layer of which the volume resistivity in the direction of the plane in the layer is higher than the volume resistivity in the layer thickness direction, the hardcoat layer comprising a plurality of layers; and

a low refractive layer formed on the hardcoat layer, the low refractive layer having a lower refractive index than the hardcoat layer.

2. The low reflective antistatic hardcoat film according to claim 1, wherein fine irregularities are formed on a surface of the hardcoat layer and/or a surface of the low refractive layer.

3. The low reflective antistatic hardcoat film according to claim 1, wherein the hardcoat layer comprises the reaction product of a reaction curing resin composition.

4. The low reflective antistatic hardcoat film according to claim 1, wherein the hardcoat layer has a high refractive index.