US 7,508,467 B2
Backlight device and liquid crystal display device
Ryota Odake, Tokyo (Japan); Toshitaka Kawashima, Kanagawa (Japan); Shuji Moro, Tokyo (Japan); and Hiroyuki Okita, Hiroshima (Japan)
Assigned to Sony Corporation, Tokyo (Japan)
Appl. No. 10/568,128
PCT Filed Jun. 10, 2005, PCT No. PCT/JP2005/010705
§ 371(c)(1), (2), (4) Date Feb. 14, 2006,
PCT Pub. No. WO2005/121879, PCT Pub. Date Dec. 22, 2005.
Claims priority of application No. 2004-176147 (JP), filed on Jun. 14, 2004.
Prior Publication US 2008/0192174 A1, Aug. 14, 2008
Int. Cl. G02F 1/1335 (2006.01); G02F 1/1339 (2006.01)
U.S. Cl. 349—62  [349/58; 349/61] 14 Claims
OG exemplary drawing
 
1. A subjacent type backlight device for illuminating a liquid crystal display panel comprising:
a light source arranged in a casing having an opening for radiating light from said light source;
a reflective surface on the inner lateral and bottom sides of said casing;
light transmitting reflecting means in said casing located parallel to the opening and above the light source, said light transmitting reflecting means partially transmitting and partially reflecting incident light from the light source and the light internally reflected by the reflective surface; and
transmitting diffusing means in said casing and located above the light transmitting reflecting means for diffusing and mixing the light transmitted through said light transmitting reflecting means and for causing surface light radiation.