Manufacturing method for optical film
AssigneeKonica Minolta Opto, Inc.
InventorHiroki Umeda
Life of this patent
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Abstract
A manufacturing method for an optical film via a solution casting method on a transparent substrate film comprising the steps of: (i) ejecting a micro-particle dispersion containing micro-particles having a average particle diameter of at least 25-200 nm as liquid droplets by use of an ink-jet head when a residual solvent content in a web is 5-400 weight %, and (ii) depositing the liquid droplets to adhere onto one side surface of a web and to form a micro convex structure, and further to form 1-10,000 points of convex parts per 10,000 μm2 having a height of the convex parts of the convex structure of 0.01-0.5 μm.
Claims10
A manufacturing method of an optical film comprising a transparent substrate film and micro-particles, the method comprising the steps of:
- casting a dope of the transparent substrate film to form a web of the transparent substrate film via a solution casting method
- ejecting a micro-particle dispersion containing the micro-particles having an average particle diameter of 25-200 nm as liquid droplets by use of an ink-jet head when a residual solvent content in the web is 5-400 weight %, and
- depositing the liquid droplets to adhere onto one surface of the web and to form a micro convex structure, and further to form 1-10,000 points of convex parts per 10,000 μm2 having a height of 0.01-0.5 μm.
Dependencies are inferred from the claim text.