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US 11,906,847 B2Granted
Optical film and back light unit including the same
AssigneeLms Co., Ltd.
InventorsHyeonuk Park, Byeonghun Lee
Life of this patent
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Abstract
A backlight unit includes a light source, a color conversion sheet disposed above the light source for converting a color of light emitted from the light source, and at least one optical film is disposed over the color conversion sheet. The one optical film has a base film, a first pattern layer including first patterns on one surface of the base film, and a second pattern layer disposed on the other surface of the base film and including second patterns different from the first patterns.
Claims17
A backlight unit comprising:
- a light source;
- a color conversion sheet disposed above the light source for converting a color of light emitted from the light source;
- and
- an optical film disposed over the color conversion sheet, the optical film comprising:
- a base film;
- a first pattern layer including a first pattern of a plurality of prisms formed on a first surface of the base film and arranged parallelly in a first direction;
- and
- a second pattern layer including a second pattern of a plurality of pyramids including a plurality of rows in a second direction and a plurality of columns in a third direction perpendicular to the second direction and formed on a second surface of the base film,
- wherein the second direction is misaligned to the first direction to form an angle in a range of greater than 0° to 45° or less.
6 more elements
An optical film comprising:
- a base film;
- a first pattern layer including a first pattern of a plurality of prisms formed on a first surface of the base film and arranged parallelly in a first direction;
- and
- a second pattern layer including a second pattern of a plurality of pyramids including a plurality of rows in a second direction and a plurality of columns in a third direction perpendicular to the second direction and formed on a second surface of the base film,
- wherein the second direction is misaligned to the first direction to form an angle in a range of greater than 0° to 45° or less.
2 more elements
Dependencies are inferred from the claim text.