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US 7,732,007 B2Granted
Method of making a polarizer plate
AssigneeEastman Kodak Company
InventorBrent C. Bell
Life of this patent
Estimating the term…
Abstract
This invention relates to polarizing plates and their manufacturing process. More particularly, this invention provides a method of making a polarizing plate comprising, providing a polarizing film, coating at least one optical film solution to both sides of the polarizing film simultaneously or near simultaneously, and drying the optical film coating solution to form an optical film on each side of the polarizing film.
Claims22
A method of making a polarizing plate comprising
- a. passing a polarizing film between a first coating apparatus and a second coating apparatus, the first coating apparatus and the second coating apparatus being opposingly located adjacent to corresponding first and second sides of the polarizing film,
- b. combining a plurality of coating liquids in at least one of the first and second coating apparatus;
- c. simultaneously coating the plurality of coating liquids as a layered optical film solution from at least one of the first and second coating apparatus directly onto the corresponding side of the polarizing film,
- d. concurrently coating an opposing side of the polarizing film with one of the layered optical film solution and a second optical film solution, whereby the optical film solutions from the first coating apparatus and the second coating apparatus are directly deposited onto opposing regions of the corresponding first and second sides of the polarizing film;
- and,
- e. drying or curing the optical film coating solution on each side of the polarizing film to form an optical film or optical film stack.
3 more elements
Dependencies are inferred from the claim text.