| US 7,542,108 B2 | ||
| Liquid crystal display device | ||
| Ken Saito, Mobara (Japan); and Kazuhiro Ishida, Mobara (Japan) | ||
| Assigned to Hitachi, Ltd., Tokyo (Japan); and Hitachi Electronic Devices Co., Ltd., Chiba-ken (Japan) | ||
| Filed on Nov. 10, 2005, as Appl. No. 11/270,537. | ||
| Application 11/270537 is a continuation of application No. 10/055969, filed on Jan. 28, 2002, abandoned. | ||
| Claims priority of application No. 2001-039522 (JP), filed on Feb. 16, 2001. | ||
| Prior Publication US 2006/0055849 A1, Mar. 16, 2006 | ||
| Int. Cl. G02F 1/1335 (2006.01); G02F 1/1333 (2006.01) | ||
| U.S. Cl. 349—64 [349/58] | 12 Claims |
| 1. A liquid crystal display device comprising:
a liquid crystal display element and a direct-type backlight unit illuminating the liquid crystal display element from lower
side, wherein
the direct-type backlight unit comprises a concaved lower frame corresponding to a full area of the liquid crystal display
element, a reflection plate arranged into the concaved lower frame, at least three cold cathode fluorescent lamps which are
spaced evenly over and fixed to the lower frame, a diffusion plate which is arranged above and covers a full length of each
of the cold cathode fluorescent lamps to controls the distribution of light from the cold cathode fluorescent lamps, a right
mold covering only right side edges of the cold cathode fluorescent lamps, a left mold covering only left side edges of the
cold cathode fluorescent lamps, and a spacer penetrating through the reflection plate,
each of the right mold and the left mold comprises a body substantially defined by an inclined surface which inclines to the
diffusion plate and located directly above only one end section of each of the cold cathode fluorescent lamps, an upper plane
surface which is parallel to the diffusion plate and connects with a upper edge of the inclined surface, respectively, and
the diffusion plate is supported by the spacer, the plane surface of the right mold and the plane surface of the left mold,
and the diffusion plate is spaced at a predetermined distance from the cold cathode fluorescent lamps only by the spacer made
of hard resin, the right mold and the left mold made of resin.
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