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US 2012/0070656 A1Published application
Anti-reflective coatings
AssigneeRohm and Haas Company
InventorsChao-Jen Chung, Edward C. Greer, Edward E. Lafleur, Edwin Nungesser
Life of this patent
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Abstract
A composition comprising polymeric particles having an average particle diameter from 0.5 to 30 μm and Vicker's scale hardness from 100 to 700 Kgf/mm2. The composition also contains a film-forming polymer having Tg no greater than 80° C. The average refractive index difference measured from 400 nm to 1100 nm between the polymeric particles and the film-forming polymer is no greater than 0.04.
Claims10
A composition comprising polymeric particles having:
- (a) an average particle diameter from 0.5 to 30 μm;
- and (b) a Vicker's scale hardness from 100 to 700 Kgf/mm2;
- and a film-forming polymer having Tg no greater than 80° C.;
- wherein an average refractive index difference measured from 400 nm to 1100 nm between the polymeric particles and the film-forming polymer is no greater than 0.04, and an average refractive index difference measured above 1100 nm or below 400 nm between the polymeric particles and the film-forming polymer is at least 0.04.
1 more element
A film comprising polymeric particles having:
- (a) an average particle diameter from 0.5 to 30 μm;
- and (b) a Vicker's scale hardness from 100 to 700 Kgf/mm2;
- and a continuous polymeric phase having Tg no greater than 80° C.;
- wherein an average refractive index difference measured from 400 nm to 1100 nm between the polymeric particles and the continuous polymeric phase is no greater than 0.04, and an average refractive index difference measured above 1100 nm or below 400 nm between the polymeric particles and the continuous polymeric phase is at least 0.04;
- and wherein an average distance between the polymeric particles is from 0.85 to 30 μm.
2 more elements
A composition comprising:
- (a) polymeric particles having (i) an average particle diameter from 0.5 to 30 μm, (ii) a Vicker's scale hardness from 100 to 700 Kgf/mm2, and (iii) at least 2.5 wt % polymerized residues of crosslinkers;
- (b) a non-aqueous solvent having a boiling point no greater than 140° C.;
- and (c) a film-forming polymer;
- wherein an average refractive index difference measured from 400 nm to 1100 nm between the polymeric particles and the film-forming polymer is no greater than 0.04, and an average refractive index difference measured above 1100 nm or below 400 nm between the polymeric particles and the film-forming polymer is at least 0.04.
1 more element
Dependencies are inferred from the claim text.