Illumination – Edge lighted panel – Light source
Reexamination Certificate
2011-03-29
2011-03-29
Lee, Jong-Suk (James) (Department: 2885)
Illumination
Edge lighted panel
Light source
C362S618000, C362S619000, C362S607000, C349S058000, C349S060000
Reexamination Certificate
active
07914192
ABSTRACT:
A light transmitting diffusing sheet can be used in backlighting systems for liquid crystal displays (LCDs). Such displays are typically used in televisions, computer monitors, laptop computers and handheld devices such as mobile phones. Embodiments of the light diffusing sheets are suitable for use with both cold-cathode fluorescent (CCFL) and light emitting diode based backlighting systems. Desired light transmitting properties in the light transmitting diffusing sheet have been achieved by modifying both the volume and surface features of the sheet. Embodiments of this invention when used as part of the backlighting assembly for a LCD system results in improved brightness and controlled viewing angles. In one embodiment, substantially asymmetric particles in the volume of the sheet are combined with a ridged structure on one surface of the sheet. The use of the sheet removes the need for separate prismatic films and diffusing sheets, while also optimizing the light transmitting properties of these two elements.
REFERENCES:
patent: 5889570 (1999-03-01), Mitsui et al.
patent: 6256146 (2001-07-01), Merrill et al.
patent: 6517914 (2003-02-01), Hiraishi
patent: 6811274 (2004-11-01), Olczak
patent: 7004610 (2006-02-01), Yamashita et al.
patent: 7265800 (2007-09-01), Jagt et al.
patent: 2003/0002153 (2003-01-01), Hiraishi et al.
patent: 2003/0058386 (2003-03-01), Bastiaansen et al.
patent: 2004/0234724 (2004-11-01), Kaminsky et al.
patent: 1 143 270 (2001-10-01), None
Nitto Denko News Release, “Nitto Denko Develops Thermosetting Polymer with High Refractive Index”, Nov. 11, 2003, http://www.nitto.com/company/release/03—11-1 1/index.html, 2 pages.
Patent Abstracts of Japan for JP 08327805, Ikeda Kenichi, published Dec. 13, 1996.
Patent Abstracts of Japan for JP 2001-249205, Kamikita Masakazu, published Sep. 14, 2001.
Patent Abstracts of Japan for JP 2003-302629, Murakami Osamu, published Oct. 24, 2003.
Fusion Optix Inc.
Lee Jong-Suk (James)
Makiya David J
LandOfFree
Enhanced light diffusing sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Enhanced light diffusing sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced light diffusing sheet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2704231