Optical sheet for TFT-LCD back light unit and liquid crystal...

Details Optical sheet for TFT-LCD back light unit and liquid crystal... Optical sheet for TFT-LCD back light unit and liquid crystal...

2011-01-18

2011-01-18

Qi, Mike (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C359S599000, C362S246000

Reexamination Certificate

active

07872711

ABSTRACT:
The present invention relates to an optical sheet for a backlight unit of a TFT-LCD and a TFT-LCD including the same. The optical sheet of the present invention includes a transparent base sheet, and a light diffusion layer in which a diffusion pattern comprised of a plurality of protrusions is formed on the transparent base sheet. The diffusion pattern satisfies an aspect ratio of 0.8 or more, the aspect ratio being a ratio of a radius (l) of a unit body portion of the protrusion, which is formed on the transparent base sheet, to a thickness (d) of the protrusion.

REFERENCES:
patent: 6822707 (2004-11-01), Ariyoshi et al.
patent: 7656473 (2010-02-01), Ha et al.

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