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US 8,557,877 B2Granted
Anti-reflective coatings for optically transparent substrates
AssigneeHoneywell International Inc.
InventorsSudip Mukhopadhyay, Yamini Pandey, Lea Dankers
Life of this patent
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Abstract
Anti-reflective coatings and coating solutions, optically transparent elements and improved processes for preparing AR coatings and coating solutions are described. The anti-reflective coatings are formed from at least two different alkoxy silane materials in a base catalyzed reaction.
Claims20
An anti-reflective coating composition comprising:
- a liquid medium comprising a majority amount of organic solvent;
- polymer particles dispersed in the liquid medium, the polymer particles comprising:
- at least one tetraalkoxy silane residue including a silicon atom bonded to four oxygen atoms;
- and
- at least one second alkoxy silane residue including a silicon atom bonded to at least one carbon atom, the at least one second alkoxy silane residue selected from the group consisting of trialkoxy silanes, dialkoxy silanes, monoalkoxy silanes, and combinations thereof, wherein the polymer particles comprise 35 to 50 mole percent of the at least one second alkoxy silane residue based on the total moles of polymer particles and wherein the polymer particles have an average particle size of less than 10 nm;
- and
- the coating composition having a pH of no more than 5.
4 more elements
An anti-reflective coating composition comprising:
- a solvent;
- and
- polymer particles comprising:
- at least one tetraalkoxy silane residue including a silicon atom bonded to four oxygen atoms;
- and
- at least one second alkoxy silane residue including a silicon atom bonded to at least one carbon atom, the at least one second alkoxy silane residue selected from the group consisting of trialkoxy silanes, dialkoxy silanes, monoalkoxy silanes, and combinations thereof, wherein the polymer particles comprise 35 to 50 mole percent of the at least one second alkoxy silane residue based on the total moles of polymer particles, the polymer particles having an average particle size of less than 1 nm.
3 more elements
An anti-reflective coating composition comprising:
- a liquid medium comprising a majority amount of organic solvent;
- polymer particles dispersed in the liquid medium, the polymer particles comprising:
- at least one tetraalkoxy silane residue including a silicon atom bonded to four oxygen atoms;
- and
- at least one second alkoxy silane residue including a silicon atom bonded to at least one carbon atom, the at least one second alkoxy silane residue selected from the group consisting of trialkoxy silanes, dialkoxy silanes, monoalkoxy silanes, and combinations thereof, wherein the polymer particles comprises 35 to 50 mole percent of the at least one second alkoxy silane residue based on the total moles of polymer particles, the polymer particles having an average particle size of less than 1 nm;
- and
- the coating composition having a pH of no more than 5.
4 more elements
Dependencies are inferred from the claim text.