Patent Number: 7,787,074

Title: Optical sheet, backlight unit, and liquid crystal display

Abstract: An optical sheet, a backlight unit including the optical sheet, and a liquid crystal display including the backlight unit may be provided. The optical sheet may include a reflective polarizing film, a base film on one surface of the reflective polarizing film, and a plurality of projections on the base film. The base film may include a first surface and a second surface opposite the first surface. A first thickness T1 is a distance between the first surface and the second surface and a second thickness T2 is a distance between the first surface and the second surface. The first and second thickness T1 and T2 satisfy the following equation: 0.1 .mu.m.ltoreq.|T1-T2|.ltoreq.10 .mu.m.

Inventors: Lee; Junghoon (Cheongju-si, KR), Kim; Kyongrae (Cheongju-si, KR)

Assignee: LG Electronics Inc.

International Classification: G02F 1/1335 (20060101); G02B 5/30 (20060101); F21V 9/14 (20060101)

Expiration Date: 8/31/12018