Light-diffusing film

Details Light-diffusing film Light-diffusing film

2008-05-27

2008-05-27

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Diffusing of incident light

C359S613000, C428S212000

Reexamination Certificate

active

11379427

ABSTRACT:
Disclosed herein is a light-diffusing film for a backlight unit of a thin film transistor-liquid crystal display. Specifically, the current invention provides a light-diffusing film, including a transparent base sheet, a light-diffusing layer, which is laminated on any one surface of the base sheet and includes a light-diffusing resin and light-diffusing particles, and an antiblocking layer, which is laminated on the other surface of the base sheet and includes an antiblocking resin and antiblocking particles, in which the light-diffusing particles satisfy a predetermined relation between a specific surface area and a radius thereof. Accordingly, the light-diffusing film of the current invention can uniformly diffuse light transmitted from a light source lamp positioned at the side surface or back surface of a display device, thus realizing vivid and distinct display images.

REFERENCES:
patent: 5620775 (1997-04-01), LaPerre
patent: 6741303 (2004-05-01), Okabe
patent: 6852396 (2005-02-01), Mineo
patent: 6912089 (2005-06-01), Nakagawa et al.
patent: 7072115 (2006-07-01), Uekita et al.
patent: 2005/0106377 (2005-05-01), Koestner et al.
patent: 2005/0162743 (2005-07-01), Shuuji et al.
patent: 2004-7016125 (2004-11-01), None
patent: 1996-38912 (2005-01-01), None

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