Brightness enhancement film with improved view angle

Details Brightness enhancement film with improved view angle Brightness enhancement film with improved view angle

2006-10-24

2006-10-24

O'Shea, Sandra (Department: 2875)

Illumination

With polarizer

C362S339000, C362S620000

Reexamination Certificate

active

07125131

ABSTRACT:
A structural shape on the surface of an optical substrate is such that the brightness of diffuse light departing from the surface of the optical substrate at certain off axis angles is reduced, at the expense of a small reduction in peak brightness measured near the viewing axis. The net result is an overall increase in useful illumination. A cross section of a prism as the structural shape has a curved sidewall or facet. A material with a relatively high index of refraction combined with a prismatic structure having a modified prism geometry improves brightness.

REFERENCES:
patent: 467208 (1892-01-01), Strobel
patent: 2403731 (1946-07-01), MacNeille
patent: 4542449 (1985-09-01), Whitehead
patent: 4576850 (1986-03-01), Martens
patent: 4906070 (1990-03-01), Cobb, Jr.
patent: 4984144 (1991-01-01), Cobb, Jr. et al.
patent: 5056892 (1991-10-01), Cobb, Jr.
patent: 5771328 (1998-06-01), Wortman et al.
patent: 5797668 (1998-08-01), Kojima et al.
patent: 5838403 (1998-11-01), Jannson et al.
patent: 5861990 (1999-01-01), Tedesco
patent: 5914759 (1999-06-01), Higuchi et al.
patent: 5917664 (1999-06-01), O'Neill et al.
patent: 5919551 (1999-07-01), Cobb, Jr. et al.
patent: 5971559 (1999-10-01), Ishikawa et al.
patent: 6002829 (1999-12-01), Winston et al.
patent: 6044196 (2000-03-01), Winston et al.
patent: 6052164 (2000-04-01), Cobb, Jr. et al.
patent: 6091547 (2000-07-01), Gardiner et al.
patent: 6108131 (2000-08-01), Hansen et al.
patent: 6130730 (2000-10-01), Jannson et al.
patent: 6208463 (2001-03-01), Hansen et al.
patent: 6243068 (2001-06-01), Evanicky et al.
patent: 6277471 (2001-08-01), Tang
patent: 6280063 (2001-08-01), Fong et al.
patent: 6322236 (2001-11-01), Campbell et al.
patent: 6335999 (2002-01-01), Winston et al.
patent: 6354709 (2002-03-01), Campbell et al.
patent: 6356391 (2002-03-01), Gardiner et al.
patent: 6456437 (2002-09-01), Lea et al.
patent: 2001/0053075 (2001-12-01), Parker et al.
patent: 2002/0061178 (2002-05-01), Winston et al.
patent: 2002/0080598 (2002-06-01), Parker et al.
patent: 2002/0097496 (2002-07-01), Lu
patent: 2002/0101659 (2002-08-01), Hansen et al.
patent: 2002/0141060 (2002-10-01), Lu et al.
patent: 2004/0075897 (2004-04-01), Ookawa et al.
patent: 0592 241 (1994-04-01), None
patent: 09101520 (1997-04-01), None
patent: 2001133614 (2001-05-01), None
patent: WO 98/33006 (1998-07-01), None
patent: WO 99/42861 (1999-08-01), None
patent: WO 99/59005 (1999-11-01), None
patent: WO 99/63397 (1999-12-01), None
patent: WO 01/27527 (2001-04-01), None
patent: WO 01/27663 (2001-04-01), None
patent: WO 01/79923 (2001-10-01), None
PCT International Search Report dated Aug. 5, 2004.

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