Illumination – Edge lighted panel – Light modifier with emission face combined with light guide...
Reexamination Certificate
2005-12-21
2009-12-08
Husar, Stephen F. (Department: 2885)
Illumination
Edge lighted panel
Light modifier with emission face combined with light guide...
C362S614000, C362S331000
Reexamination Certificate
active
07628526
ABSTRACT:
A back light unit is disclosed, which improves condensing efficiency of light and viewing angle characteristics. The back light unit includes at least one lamp generating light, a light guide plate emitting light across a surface thereof using the light generated from the lamp, a diffusion sheet arranged above the light guide plate to diffuse the light passing through the light guide plate, a first condensing sheet condensing the light from the diffusion sheet using a plurality of first elliptical condensing patterns arranged on the diffusion sheet in a first direction, and a second condensing sheet further condensing the light from the first condensing sheet using a plurality of second elliptical condensing patterns arranged on the first condensing sheet in a second direction crossing the first direction.
REFERENCES:
patent: 5841572 (1998-11-01), Ando et al.
patent: 6752507 (2004-06-01), Wang et al.
patent: 6880947 (2005-04-01), Hsieh et al.
patent: 6903788 (2005-06-01), Shiraogawa et al.
patent: 7125155 (2006-10-01), Sakuda et al.
patent: 7207707 (2007-04-01), Huang et al.
patent: 7303323 (2007-12-01), Choi et al.
patent: 7330315 (2008-02-01), Nilsen
patent: 2001/0050736 (2001-12-01), Lee et al.
patent: 2002/0080598 (2002-06-01), Parker et al.
patent: 2005/0281051 (2005-12-01), Kim et al.
Jeong Young Hun
Lee Man Hoan
Lee Sung Keun
Moon Won Taek
Paik Jun Kyu
Husar Stephen F.
LG Display Co. Ltd.
McKenna Long & Aldridge
Neils Peggy A.
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