Method for forming optical film
AssigneeHon Hai Precision Industry Co., Ltd.
InventorChia-Ling Hsu
Life of this patent
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Abstract
A method for manufacturing an optical film includes providing a molding machine. The molding machine includes a hopper, a first cylindrical roller, a second cylindrical roller, and a UV light source. The first and second cylindrical rollers are located at two opposite sides of a narrow outlet of the hopper and positioned at substantially a same height just below the narrow outlet. Thereafter, a UV-curable material is provided into the hopper, and flows out from the narrow outlet of the hopper. The UV light source is turned on toward the UV-curable material. Furthermore, the first and second cylindrical rollers are rotated to directly press the UV-curable material when the UV-curable material is cured.
Claims19
A method for manufacturing an optical film, comprising:
- providing a molding machine, the molding machine comprising:
- a hopper contoured to provide an UV-curable material of the optical film and defining a narrow outlet:
- a first cylindrical roller rotatable about a first central axis of the first cylindrical roller;
- a second cylindrical roller rotatable about a second central axis of the second roller, wherein the first central axis is in parallel with the second central axis;
- the first and second cylindrical rollers are located at two opposite sides of the narrow outlet and positioned at substantially a same height below the narrow outlet, wherein a gap between the first and second cylindrical rollers allows the raw material to pass through the gap;
- an ultraviolet (UV) light source located in the second cylindrical roller, wherein an emission direction of the ultraviolet light source is orientated toward a space between the narrow outlet and the second cylindrical roller;
- and
- a holder contoured to hold the second cylindrical roller, the holder comprising:
- a central shaft coaxial with the second cylindrical roller, wherein the UV light source is connected to the central shaft;
- two rotatable shafts located at two opposite sides of the central shaft and paralleling the central shaft, outer surfaces of the two rotatable shafts contacting an inner surface of the second cylindrical roller;
- and
- at least one fixing unit connecting the central shaft and the two rotatable shafts;
- providing the UV-curable material into the hopper, and the UV-curable material flowing downward from the narrow outlet of the hopper;
- turning on the UV light source toward the UV-curable material flowing downward from the narrow outlet to cure the UV-curable material;
- and
- rotating the first and second cylindrical rollers to directly press the UV-curable material without pre-coating the UV-curable material on a solid substrate when the UV-curable material is cured.
Dependencies are inferred from the claim text.