Optical sheet, backlight unit, and liquid crystal display

Details Optical sheet, backlight unit, and liquid crystal display Optical sheet, backlight unit, and liquid crystal display

2011-06-07

2011-06-07

Pak, Sung H (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

Reexamination Certificate

active

07956954

ABSTRACT:
An optical sheet, a backlight unit including the optical sheet and a liquid crystal display including the backlight unit are disclosed. The optical sheet includes a reflective polarizing film, and a first diffusing layer on the reflective polarizing film. The first diffusing layer includes a plurality of first diffusion particles. The first diffusion particles have a volume distribution as a function of diameter. For a diameter D of a first diffusion particle corresponding to a maximum value of the volume distribution, a summation of volumes of a portion of the first diffusion particles having diameters between D−2 μm and D+2 μm is about 40% to 80% of a total volume of the first diffusion particles.

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