The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2009
Filed:
Oct. 19, 2006
Sang Pil Kim, Gumi, KR;
Mun Bok Lee, Chucheon-si, KR;
Sang Pil Kim, Gumi, KR;
Mun Bok Lee, Chucheon-si, KR;
Toray Saehan, Inc., , KR;
Abstract
Disclosed herein is a diffusion sheet for use in a backlight unit of a TFT-LCD. Specifically, this invention provides a diffusion sheet including a transparent base sheet, a light-diffusing layer laminated on one surface of the base sheet, and an antiblocking layer laminated on the other surface of the base sheet, the base sheet satisfying a refractive index represented by a predetermined equation. According to this invention, the diffusion sheet for a display can uniformly diffuse light, which is radiated from a light source lamp positioned at a side surface or the back surface of the display, while passing such light therethrough, thus obtaining clear display images, resulting in increased total light transmittance, light diffusibility, and luminance.