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US 8,274,626 B2Granted
Diffuser prism sheet with light diffusing element on valley region, LCD back light unit including the same, and LCD device including the same
AssigneeCheil Industries Inc.
InventorsJun Hyeak Choi, Man Suk Kim, Ju Yeol Choi, Seok Hoon Jang
Life of this patent
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Abstract
A diffuser prism sheet, an LCD back light unit including the same, and an LCD device including the same, the diffuser prism sheet including a base film made of a transparent material, and a light refracting part on a surface of the base film, the light refracting part including a plurality of unit prisms arranged in one direction, having a predetermined cross-sectional shape and valley regions between adjacent unit prisms, and light diffusing elements in the valley regions between the adjacent unit prisms.
Claims13
A diffuser prism sheet, comprising:
- a base film made of a transparent material, and
- a light refracting part on a surface of the base film, the light refracting part including a plurality of unit prisms arranged in one direction, having a predetermined cross-sectional shape and valley regions between adjacent unit prisms, and light diffusing elements in the valley regions between the adjacent unit prisms,
- wherein:
- each of the unit prisms has a height, and
- at least about 60% of the light diffusing elements are distributed on portions of the valley regions under a half of a height of each of the unit prisms.
2 more elements
Dependencies are inferred from the claim text.