Anti-glare material and optical layered product

• US 20090233048A1
• Filed: 11/17/2008
• Published: 09/17/2009
• Est. Priority Date: 11/19/2007
• Status: Abandoned Application

• Current Assignee: Tomoegawa Co., Ltd.
• Original Assignee: Tomoegawa Co., Ltd.
• Inventors: Kuwabara, Masaomi, Murata, Chikara, Moriuchi, Hideki, Ooishi, Kazuya
• Application Number:
  US12/313,111
• Publication Number:
  US 20090233048A1
• Time in Patent Office: Days
• US Class Current: 428/143
• CPC Class Codes: G02B 5/0221 the surface having an irregular structure G02B5/0226 takes precedence
• CPC Class Codes: G02B 5/0284 used in reflection
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
• CPC Class Codes: Y10T 428/24372 Particulate matter
• CPC Class Codes: Y10T 428/257 Iron oxide or aluminum oxide

Abstract

An anti-glare material comprises irregularity shape formed over at least one side. The side comprising the irregularity shape has slope angles satisfying the distribution conditions according to the formulae (1) and (2):

A≦0.2  (1) and

0.8≦B≦2.5  (2)

• • wherein
  • A: proportion of slope angles at or greater than 1.6° in relation to the total, B: (proportion of slope angles at or greater than 0.4° and smaller than 1.6° in relation to the total)/(proportion of slope angles less than 0.4° in relation to the total).

Claims

1. An anti-glare material comprising irregularity shape formed over at least one side, wherein the side comprising the irregularity shape has slope angles satisfying the distribution conditions according to the formulae (1) and (2):

A≦

0.2 

 

(1) and

0.8≦

B≦

2.5 

 

(2)

wherein

A;

proportion of slope angles at or greater than 1.6°

in relation to the total, B;

(proportion of slope angles at or greater than 0.4° and

smaller than 1.6°

in relation to the total)/(proportion of slope angles less than 0.4°

in relation to the total).

2. The anti-glare material according to claim 1, which comprises a translucent substrate on which a resin layer is layered.

3. The anti-glare material according to claim 2, wherein the resin layer includes translucent resin fine particles and comprises the irregularity shape formed over the surface opposite to the surface on which the translucent substrate is layered.

4. The anti-glare material according to claim 1, wherein the irregularity shape have a mean spacing of profile irregularities (Sm) of 50 to 250 μ

m.

5. The anti-glare material according to claim 1, which has an internal haze of 5 to 40.

6. The anti-glare material according to claim 2, which comprises a low-reflection layer layered on the resin layer.

7. An optical layered product comprising at least an optically functional layer provided directly or via another layer on one or both sides of a translucent substrate, wherein the optically functional layer contains:

a translucent resin as a matrix;

a translucent organic filler dispersed through the translucent resin; and

metal oxide fine particles having a particle size of 1 to 100 nm, incorporated at a mix proportion of 0.1 to 10% by weight, the metal oxide fine particles being unevenly distributed toward the surface of the translucent organic filler.

8. The optical layered product according to claim 7, wherein the metal oxide fine particles are alumina fine particles.

9. A process for producing an optical layered product, comprising the steps of

applying a coating material made by mixing at least an energy-curable resin composition, a translucent organic filler and a metal oxide sol to one or both sides of a translucent substrate directly or via another layer;

and

after the step of applying, applying an energy to cure the energy-curable resin composition to form an optically functional layer.

10. The process for producing the optical layered product according to claim 9, wherein the metal oxide sol is alumina sol.